TY  - JOUR
AU  - Li, Xingchen
AU  - Meng, Zifan
AU  - Guan, Lin
AU  - Liu, Annan
AU  - Li, Lei
AU  - Nešić, Maja D.
AU  - Yang, Bai
AU  - Qu, Wenrui
AU  - Lin, Quan
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13120
AB  - The treatment of infected diabetic wounds faces severe challenges due to vascular deficiencies induced by a hyperglycemia microenvironment and the extensive proliferation of drug-resistant bacteria. In this work, we developed a glucose-responsive hydrogel dressing system (CGH) with dual properties that effectively treat methicillin-resistant Staphylococcus aureus (MRSA)-infected wounds in rats and enhance wound healing. The hydrogel is synthesized using copper nanoclusters (CuNCs) cross-linked with oxidized hyaluronic acid (HA-ALD) in situ and decorated with glucose oxidase (GOx). GOx enzymatically degrades excess glucose at the wound site, generating gluconic acid and H2O2, and optimizes the limiting factors of the Fenton reaction. Decreasing pH weakens the interaction between CuNCs and HA-ALD, resulting in the release of CuNCs that catalyze the production of reactive oxygen species (ROS) by degradation of H2O2 through the Fenton reaction. This process can eradicate drug-resistant bacteria. In addition, CuNCs endowed hydrogels with excellent conductivity, thus enabling the promotion of blood vessel formation by electrical stimulation (ES), thereby facilitating tissue repair around the wound area. In conclusion, the developed novel multifunctional wound healing system can conform to irregular wound shapes, reduce glucose levels within the wound, establish a sustained sterile environment, and promote blood vessel formation through electrical stimulation, thus emerging as a highly promising and comprehensive option for effectively treating complex diabetic wounds.
T2  - Chemical Engineering Journal
T1  - Glucose-Responsive hydrogel optimizing Fenton reaction to eradicate multidrug-resistant bacteria for infected diabetic wound healing
VL  - 487
SP  - 150545
DO  - 10.1016/j.cej.2024.150545
ER  - 

@article{
author = "Li, Xingchen and Meng, Zifan and Guan, Lin and Liu, Annan and Li, Lei and Nešić, Maja D. and Yang, Bai and Qu, Wenrui and Lin, Quan",
year = "2024",
abstract = "The treatment of infected diabetic wounds faces severe challenges due to vascular deficiencies induced by a hyperglycemia microenvironment and the extensive proliferation of drug-resistant bacteria. In this work, we developed a glucose-responsive hydrogel dressing system (CGH) with dual properties that effectively treat methicillin-resistant Staphylococcus aureus (MRSA)-infected wounds in rats and enhance wound healing. The hydrogel is synthesized using copper nanoclusters (CuNCs) cross-linked with oxidized hyaluronic acid (HA-ALD) in situ and decorated with glucose oxidase (GOx). GOx enzymatically degrades excess glucose at the wound site, generating gluconic acid and H2O2, and optimizes the limiting factors of the Fenton reaction. Decreasing pH weakens the interaction between CuNCs and HA-ALD, resulting in the release of CuNCs that catalyze the production of reactive oxygen species (ROS) by degradation of H2O2 through the Fenton reaction. This process can eradicate drug-resistant bacteria. In addition, CuNCs endowed hydrogels with excellent conductivity, thus enabling the promotion of blood vessel formation by electrical stimulation (ES), thereby facilitating tissue repair around the wound area. In conclusion, the developed novel multifunctional wound healing system can conform to irregular wound shapes, reduce glucose levels within the wound, establish a sustained sterile environment, and promote blood vessel formation through electrical stimulation, thus emerging as a highly promising and comprehensive option for effectively treating complex diabetic wounds.",
journal = "Chemical Engineering Journal",
title = "Glucose-Responsive hydrogel optimizing Fenton reaction to eradicate multidrug-resistant bacteria for infected diabetic wound healing",
volume = "487",
pages = "150545",
doi = "10.1016/j.cej.2024.150545"
}

Li, X., Meng, Z., Guan, L., Liu, A., Li, L., Nešić, M. D., Yang, B., Qu, W.,& Lin, Q.. (2024). Glucose-Responsive hydrogel optimizing Fenton reaction to eradicate multidrug-resistant bacteria for infected diabetic wound healing. in Chemical Engineering Journal, 487, 150545.
https://doi.org/10.1016/j.cej.2024.150545

Li X, Meng Z, Guan L, Liu A, Li L, Nešić MD, Yang B, Qu W, Lin Q. Glucose-Responsive hydrogel optimizing Fenton reaction to eradicate multidrug-resistant bacteria for infected diabetic wound healing. in Chemical Engineering Journal. 2024;487:150545.
doi:10.1016/j.cej.2024.150545 .

Li, Xingchen, Meng, Zifan, Guan, Lin, Liu, Annan, Li, Lei, Nešić, Maja D., Yang, Bai, Qu, Wenrui, Lin, Quan, "Glucose-Responsive hydrogel optimizing Fenton reaction to eradicate multidrug-resistant bacteria for infected diabetic wound healing" in Chemical Engineering Journal, 487 (2024):150545,
https://doi.org/10.1016/j.cej.2024.150545 . .

TY  - JOUR
AU  - Algarra, Manuel
AU  - Carrillo, Celia
AU  - Nešić, Maja D.
AU  - Filipović Tričković, Jelena
AU  - Žakula, Jelena
AU  - Korićanac, Lela
AU  - Jiménez-Jiménez, José
AU  - Rodriguez-Castellón, Enrique
AU  - Bandosz, Teresa J.
AU  - Petković, Marijana
AU  - Soto, Juan
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12247
AB  - This paper explains the basis for the excitation energy-independent fluorescence emission of biomass-derived carbon dots (CDs) and shows that these CDs have excellent anti-melanoma and anti-metastatic potential. Additionally, we demonstrate that the black carrots´-derived CDs can be exploited as cell cycle-sensing agents, because of the interaction with chromatin material. Besides their optical properties, fluorescent CDs have gained increased attention for image-guided cancer treatment due to their water solubility, environmental friendliness, affordability, ease of synthesis, and primary biocompatibility. CDs have excellent photostability, determined by their precursors and synthesis pathways. In this study, CDs with chemically homogenous surface functional groups were made using a hydrothermal technique from black carrot extract, an anthocyanin-rich substance derived from biomass. The anti-cancer and anti-metastatic properties of black carrot-derived CDs can be attributed to flavylium cations on the surface, spherical forms, and high water dispersibility. Most importantly, these CDs demonstrate a stable emission at a single wavelength, 612 nm, independent of the excitation energy, which we have explained theoretically for the first time.
T2  - Journal of Molecular Structure
T1  - Testing of black-carrots-derived fluorescence imaging and anti-metastatic potential
VL  - 1300
SP  - 137245
DO  - 10.1016/j.molstruc.2023.137245
ER  - 

@article{
author = "Algarra, Manuel and Carrillo, Celia and Nešić, Maja D. and Filipović Tričković, Jelena and Žakula, Jelena and Korićanac, Lela and Jiménez-Jiménez, José and Rodriguez-Castellón, Enrique and Bandosz, Teresa J. and Petković, Marijana and Soto, Juan",
year = "2024",
abstract = "This paper explains the basis for the excitation energy-independent fluorescence emission of biomass-derived carbon dots (CDs) and shows that these CDs have excellent anti-melanoma and anti-metastatic potential. Additionally, we demonstrate that the black carrots´-derived CDs can be exploited as cell cycle-sensing agents, because of the interaction with chromatin material. Besides their optical properties, fluorescent CDs have gained increased attention for image-guided cancer treatment due to their water solubility, environmental friendliness, affordability, ease of synthesis, and primary biocompatibility. CDs have excellent photostability, determined by their precursors and synthesis pathways. In this study, CDs with chemically homogenous surface functional groups were made using a hydrothermal technique from black carrot extract, an anthocyanin-rich substance derived from biomass. The anti-cancer and anti-metastatic properties of black carrot-derived CDs can be attributed to flavylium cations on the surface, spherical forms, and high water dispersibility. Most importantly, these CDs demonstrate a stable emission at a single wavelength, 612 nm, independent of the excitation energy, which we have explained theoretically for the first time.",
journal = "Journal of Molecular Structure",
title = "Testing of black-carrots-derived fluorescence imaging and anti-metastatic potential",
volume = "1300",
pages = "137245",
doi = "10.1016/j.molstruc.2023.137245"
}

Algarra, M., Carrillo, C., Nešić, M. D., Filipović Tričković, J., Žakula, J., Korićanac, L., Jiménez-Jiménez, J., Rodriguez-Castellón, E., Bandosz, T. J., Petković, M.,& Soto, J.. (2024). Testing of black-carrots-derived fluorescence imaging and anti-metastatic potential. in Journal of Molecular Structure, 1300, 137245.
https://doi.org/10.1016/j.molstruc.2023.137245

Algarra M, Carrillo C, Nešić MD, Filipović Tričković J, Žakula J, Korićanac L, Jiménez-Jiménez J, Rodriguez-Castellón E, Bandosz TJ, Petković M, Soto J. Testing of black-carrots-derived fluorescence imaging and anti-metastatic potential. in Journal of Molecular Structure. 2024;1300:137245.
doi:10.1016/j.molstruc.2023.137245 .

Algarra, Manuel, Carrillo, Celia, Nešić, Maja D., Filipović Tričković, Jelena, Žakula, Jelena, Korićanac, Lela, Jiménez-Jiménez, José, Rodriguez-Castellón, Enrique, Bandosz, Teresa J., Petković, Marijana, Soto, Juan, "Testing of black-carrots-derived fluorescence imaging and anti-metastatic potential" in Journal of Molecular Structure, 1300 (2024):137245,
https://doi.org/10.1016/j.molstruc.2023.137245 . .

TY  - CONF
AU  - Ralić, Vanja
AU  - Gemović, Branislava
AU  - Nešić, Maja D.
AU  - Popović, Iva
AU  - Stepić, Milutin
AU  - Petković, Marijana
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12390
AB  - In this work, we have applied the Informational Spectrum Method (ISM) to discover a potential protein target in the HeLa cervical cancer cell line for [Pd(dach)Cl2] complex. Since Pd complexes are considered an alternative to traditionally used Pt complexes in anti-cancer therapy, it is essential to elucidate the mechanism of their action. A detailed analysis that also involves screening the known protein databases revealed the proteins of the SOSS complex as the most probable [Pd(dach)Cl2] targets. Since this protein maintains genomic stability, this result shows the potential of the Pd(II) complex as an anti-cancer drug.
PB  - Kragujevac : Institute for Information Technologies, University of Kragujevac
C3  - ICCBIKG 2023 : 2nd International Conference on Chemo and Bioinformatics : Book of Proceedings
T1  - Identification of protein target molecules for [Pd(dach)Cl2] complex in HeLa cervical carcinoma cells
SP  - 296
EP  - 299
DO  - 10.46793/ICCBI23.296R
ER  - 

@conference{
author = "Ralić, Vanja and Gemović, Branislava and Nešić, Maja D. and Popović, Iva and Stepić, Milutin and Petković, Marijana",
year = "2023",
abstract = "In this work, we have applied the Informational Spectrum Method (ISM) to discover a potential protein target in the HeLa cervical cancer cell line for [Pd(dach)Cl2] complex. Since Pd complexes are considered an alternative to traditionally used Pt complexes in anti-cancer therapy, it is essential to elucidate the mechanism of their action. A detailed analysis that also involves screening the known protein databases revealed the proteins of the SOSS complex as the most probable [Pd(dach)Cl2] targets. Since this protein maintains genomic stability, this result shows the potential of the Pd(II) complex as an anti-cancer drug.",
publisher = "Kragujevac : Institute for Information Technologies, University of Kragujevac",
journal = "ICCBIKG 2023 : 2nd International Conference on Chemo and Bioinformatics : Book of Proceedings",
title = "Identification of protein target molecules for [Pd(dach)Cl2] complex in HeLa cervical carcinoma cells",
pages = "296-299",
doi = "10.46793/ICCBI23.296R"
}

Ralić, V., Gemović, B., Nešić, M. D., Popović, I., Stepić, M.,& Petković, M.. (2023). Identification of protein target molecules for [Pd(dach)Cl2] complex in HeLa cervical carcinoma cells. in ICCBIKG 2023 : 2nd International Conference on Chemo and Bioinformatics : Book of Proceedings
Kragujevac : Institute for Information Technologies, University of Kragujevac., 296-299.
https://doi.org/10.46793/ICCBI23.296R

Ralić V, Gemović B, Nešić MD, Popović I, Stepić M, Petković M. Identification of protein target molecules for [Pd(dach)Cl2] complex in HeLa cervical carcinoma cells. in ICCBIKG 2023 : 2nd International Conference on Chemo and Bioinformatics : Book of Proceedings. 2023;:296-299.
doi:10.46793/ICCBI23.296R .

Ralić, Vanja, Gemović, Branislava, Nešić, Maja D., Popović, Iva, Stepić, Milutin, Petković, Marijana, "Identification of protein target molecules for [Pd(dach)Cl2] complex in HeLa cervical carcinoma cells" in ICCBIKG 2023 : 2nd International Conference on Chemo and Bioinformatics : Book of Proceedings (2023):296-299,
https://doi.org/10.46793/ICCBI23.296R . .

TY  - CONF
AU  - Ralić, Vanja
AU  - Nešić, Maja
AU  - Abu el Rub, Anamarija
AU  - Dučić, Tanja
AU  - Gemović, Branislava
AU  - Algarra, Manuel
AU  - Stepić, Milutin
AU  - Korićanac, Lela
AU  - Žakula, Jelena
AU  - Petković, Marijana
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12657
AB  - Nanocomposite system formulated from surface-modified S-doped carbon dot (S-CD) nanoparticle with a potential metallodrug, palladium(II) complex, dichloro(1,2-diaminocyclohexane)palladium(II), [Pd(dach)Cl2] (Pd@S-CD), was investigated as a model system for the treatment of cervical carcinoma (HeLa) cells. To examine the intracellular biochemical effects induced by the Pd@S-CD, we used Synchrotron Radiation-based Fourier-transform infrared spectroscopy (SR FTIR). SR FTIR spectroscopy was employed to investigate the alterations in cellular components’ biochemical composition and secondary structure upon exposure to Pd@S-CD. Spectral analysis, complemented by statistical techniques, revealed changes in biomolecules, lipids, proteins, nucleic acids, and carbohydrates caused by the treatment with Pd@CDs. These results and the increased cytotoxicity of the system demonstrate its high anti-cervical cancer therapeutic potential.
PB  - Kragujevac : Institute for Information Technologies, University of Kragujevac
C3  - ICCBIKG 2023 : 2nd International Conference on Chemo and Bioinformatics : Book of Proceedings
T1  - SR FTIR spectroscopy investigation of Pd@S-CD nanocomposite system effects on biomolecules in cervical carcinoma cells
SP  - 467
EP  - 470
DO  - 10.46793/ICCBI23.467R
ER  - 

@conference{
author = "Ralić, Vanja and Nešić, Maja and Abu el Rub, Anamarija and Dučić, Tanja and Gemović, Branislava and Algarra, Manuel and Stepić, Milutin and Korićanac, Lela and Žakula, Jelena and Petković, Marijana",
year = "2023",
abstract = "Nanocomposite system formulated from surface-modified S-doped carbon dot (S-CD) nanoparticle with a potential metallodrug, palladium(II) complex, dichloro(1,2-diaminocyclohexane)palladium(II), [Pd(dach)Cl2] (Pd@S-CD), was investigated as a model system for the treatment of cervical carcinoma (HeLa) cells. To examine the intracellular biochemical effects induced by the Pd@S-CD, we used Synchrotron Radiation-based Fourier-transform infrared spectroscopy (SR FTIR). SR FTIR spectroscopy was employed to investigate the alterations in cellular components’ biochemical composition and secondary structure upon exposure to Pd@S-CD. Spectral analysis, complemented by statistical techniques, revealed changes in biomolecules, lipids, proteins, nucleic acids, and carbohydrates caused by the treatment with Pd@CDs. These results and the increased cytotoxicity of the system demonstrate its high anti-cervical cancer therapeutic potential.",
publisher = "Kragujevac : Institute for Information Technologies, University of Kragujevac",
journal = "ICCBIKG 2023 : 2nd International Conference on Chemo and Bioinformatics : Book of Proceedings",
title = "SR FTIR spectroscopy investigation of Pd@S-CD nanocomposite system effects on biomolecules in cervical carcinoma cells",
pages = "467-470",
doi = "10.46793/ICCBI23.467R"
}

Ralić, V., Nešić, M., Abu el Rub, A., Dučić, T., Gemović, B., Algarra, M., Stepić, M., Korićanac, L., Žakula, J.,& Petković, M.. (2023). SR FTIR spectroscopy investigation of Pd@S-CD nanocomposite system effects on biomolecules in cervical carcinoma cells. in ICCBIKG 2023 : 2nd International Conference on Chemo and Bioinformatics : Book of Proceedings
Kragujevac : Institute for Information Technologies, University of Kragujevac., 467-470.
https://doi.org/10.46793/ICCBI23.467R

Ralić V, Nešić M, Abu el Rub A, Dučić T, Gemović B, Algarra M, Stepić M, Korićanac L, Žakula J, Petković M. SR FTIR spectroscopy investigation of Pd@S-CD nanocomposite system effects on biomolecules in cervical carcinoma cells. in ICCBIKG 2023 : 2nd International Conference on Chemo and Bioinformatics : Book of Proceedings. 2023;:467-470.
doi:10.46793/ICCBI23.467R .

Ralić, Vanja, Nešić, Maja, Abu el Rub, Anamarija, Dučić, Tanja, Gemović, Branislava, Algarra, Manuel, Stepić, Milutin, Korićanac, Lela, Žakula, Jelena, Petković, Marijana, "SR FTIR spectroscopy investigation of Pd@S-CD nanocomposite system effects on biomolecules in cervical carcinoma cells" in ICCBIKG 2023 : 2nd International Conference on Chemo and Bioinformatics : Book of Proceedings (2023):467-470,
https://doi.org/10.46793/ICCBI23.467R . .

TY  - JOUR
AU  - Houdova, Dominika
AU  - Popović, Iva A.
AU  - Dellinger, Thomas
AU  - Nešić, Maja D.
AU  - Petković, Marijana
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10135
AB  - The endangered loggerhead sea turtles (Caretta caretta) are a relatively abundant sea turtle species in Madeiran waters, where they encounter various environmental stressors: from natural to anthropogenic. The physiological stress response is increased corticosterone (CS) level in the blood, achieving 2 ng/mL. Although there are various analytical methods for determining the CS concentration in turtle blood, most of them require tedious procedures for the preparation. In this work, we have tested the possibility of using matrix-assisted laser desorption and ionization time-of-flight mass spectrometry (MALDI TOF MS) for fast screening and detection of CS in blood from a turtle captured at the coast of Madeira Island. MALDI does not require sample derivatization and is suitable for low sample volume. The linearity, precision, and limit of detection and quantification with three organic MALDI matrices were investigated in this study. The signal-to-noise ratio of the CS-derived signal was used as a parameter for quantification. Isotopically labelled corticosterone was added as a correction factor at fixed concentration to achieve better linearity and precision. Our results demonstrate that this method has the potential for quantification of CS in turtle blood. However, the lowest concentration of CS extracted from plasma that was still detectable by MALDI TOF MS was about 0.04 mg/mL, which is about ten times higher than the expected CS concentration in blood.
T2  - International Journal of Mass Spectrometry
T1  - Potential of MALDI TOF mass spectrometry for detection and quantification of corticosterone in the blood of loggerhead sea turtles
VL  - 473
SP  - 116796
DO  - 10.1016/j.ijms.2022.116796
ER  - 

@article{
author = "Houdova, Dominika and Popović, Iva A. and Dellinger, Thomas and Nešić, Maja D. and Petković, Marijana",
year = "2022",
abstract = "The endangered loggerhead sea turtles (Caretta caretta) are a relatively abundant sea turtle species in Madeiran waters, where they encounter various environmental stressors: from natural to anthropogenic. The physiological stress response is increased corticosterone (CS) level in the blood, achieving 2 ng/mL. Although there are various analytical methods for determining the CS concentration in turtle blood, most of them require tedious procedures for the preparation. In this work, we have tested the possibility of using matrix-assisted laser desorption and ionization time-of-flight mass spectrometry (MALDI TOF MS) for fast screening and detection of CS in blood from a turtle captured at the coast of Madeira Island. MALDI does not require sample derivatization and is suitable for low sample volume. The linearity, precision, and limit of detection and quantification with three organic MALDI matrices were investigated in this study. The signal-to-noise ratio of the CS-derived signal was used as a parameter for quantification. Isotopically labelled corticosterone was added as a correction factor at fixed concentration to achieve better linearity and precision. Our results demonstrate that this method has the potential for quantification of CS in turtle blood. However, the lowest concentration of CS extracted from plasma that was still detectable by MALDI TOF MS was about 0.04 mg/mL, which is about ten times higher than the expected CS concentration in blood.",
journal = "International Journal of Mass Spectrometry",
title = "Potential of MALDI TOF mass spectrometry for detection and quantification of corticosterone in the blood of loggerhead sea turtles",
volume = "473",
pages = "116796",
doi = "10.1016/j.ijms.2022.116796"
}

Houdova, D., Popović, I. A., Dellinger, T., Nešić, M. D.,& Petković, M.. (2022). Potential of MALDI TOF mass spectrometry for detection and quantification of corticosterone in the blood of loggerhead sea turtles. in International Journal of Mass Spectrometry, 473, 116796.
https://doi.org/10.1016/j.ijms.2022.116796

Houdova D, Popović IA, Dellinger T, Nešić MD, Petković M. Potential of MALDI TOF mass spectrometry for detection and quantification of corticosterone in the blood of loggerhead sea turtles. in International Journal of Mass Spectrometry. 2022;473:116796.
doi:10.1016/j.ijms.2022.116796 .

Houdova, Dominika, Popović, Iva A., Dellinger, Thomas, Nešić, Maja D., Petković, Marijana, "Potential of MALDI TOF mass spectrometry for detection and quantification of corticosterone in the blood of loggerhead sea turtles" in International Journal of Mass Spectrometry, 473 (2022):116796,
https://doi.org/10.1016/j.ijms.2022.116796 . .

TY  - JOUR
AU  - Nešić, Maja D.
AU  - Dučić, Tanja
AU  - Algarra, Manuel
AU  - Popović, Iva A.
AU  - Stepić, Milutin
AU  - Gonçalves, Mara
AU  - Petković, Marijana
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10184
AB  - In the last decade, targeting membrane lipids in cancer cells has been a promising approach that deserves attention in the field of anticancer drug development. To get a comprehensive understanding of the effect of the drug [Ru(η5-Cp)(PPh3)2CN] (RuCN) on cell lipidic components, we combine complementary analytical approaches, matrix-assisted laser desorption and ionization time-of-flight mass spectrometry (MALDI TOF MS) and synchrotron radiation-based Fourier transform infrared (SR-FTIR) spectroscopy. Techniques are used for screening the effect of potential metallodrug, RuCN, without and with drug carriers (carbon dots (CDs) and nitrogen-doped carbon dots (N-CDs)) on the lipids of the human ovarian cancer cell line A2780. MALDI TOF MS results revealed that the lysis of ovarian cancer membrane lipids is promoted by RuCN and not by drug carriers (CDs and N-CDs). Furthermore, SR-FTIR results strongly suggested that the phospholipids of cancer cells undergo oxidative stress after the treatment with RuCN that was accompanied by the disordering of the fatty acid chains. On the other hand, using (N-)CDs as RuCN nanocarriers prevented the oxidative stress caused by RuCN but did not prevent the disordering of the fatty acid chain packing. Finally, we demonstrated that RuCN and RuCN/(N-)CDs alter the hydration of the membrane surface in the membrane–water interface region.
T2  - Cancers
T1  - Lipid Status of A2780 Ovarian Cancer Cells after Treatment with Ruthenium Complex Modified with Carbon Dot Nanocarriers: A Multimodal SR-FTIR Spectroscopy and MALDI TOF Mass Spectrometry Study
VL  - 14
IS  - 5
SP  - 1182
DO  - 10.3390/cancers14051182
ER  - 

@article{
author = "Nešić, Maja D. and Dučić, Tanja and Algarra, Manuel and Popović, Iva A. and Stepić, Milutin and Gonçalves, Mara and Petković, Marijana",
year = "2022",
abstract = "In the last decade, targeting membrane lipids in cancer cells has been a promising approach that deserves attention in the field of anticancer drug development. To get a comprehensive understanding of the effect of the drug [Ru(η5-Cp)(PPh3)2CN] (RuCN) on cell lipidic components, we combine complementary analytical approaches, matrix-assisted laser desorption and ionization time-of-flight mass spectrometry (MALDI TOF MS) and synchrotron radiation-based Fourier transform infrared (SR-FTIR) spectroscopy. Techniques are used for screening the effect of potential metallodrug, RuCN, without and with drug carriers (carbon dots (CDs) and nitrogen-doped carbon dots (N-CDs)) on the lipids of the human ovarian cancer cell line A2780. MALDI TOF MS results revealed that the lysis of ovarian cancer membrane lipids is promoted by RuCN and not by drug carriers (CDs and N-CDs). Furthermore, SR-FTIR results strongly suggested that the phospholipids of cancer cells undergo oxidative stress after the treatment with RuCN that was accompanied by the disordering of the fatty acid chains. On the other hand, using (N-)CDs as RuCN nanocarriers prevented the oxidative stress caused by RuCN but did not prevent the disordering of the fatty acid chain packing. Finally, we demonstrated that RuCN and RuCN/(N-)CDs alter the hydration of the membrane surface in the membrane–water interface region.",
journal = "Cancers",
title = "Lipid Status of A2780 Ovarian Cancer Cells after Treatment with Ruthenium Complex Modified with Carbon Dot Nanocarriers: A Multimodal SR-FTIR Spectroscopy and MALDI TOF Mass Spectrometry Study",
volume = "14",
number = "5",
pages = "1182",
doi = "10.3390/cancers14051182"
}

Nešić, M. D., Dučić, T., Algarra, M., Popović, I. A., Stepić, M., Gonçalves, M.,& Petković, M.. (2022). Lipid Status of A2780 Ovarian Cancer Cells after Treatment with Ruthenium Complex Modified with Carbon Dot Nanocarriers: A Multimodal SR-FTIR Spectroscopy and MALDI TOF Mass Spectrometry Study. in Cancers, 14(5), 1182.
https://doi.org/10.3390/cancers14051182

Nešić MD, Dučić T, Algarra M, Popović IA, Stepić M, Gonçalves M, Petković M. Lipid Status of A2780 Ovarian Cancer Cells after Treatment with Ruthenium Complex Modified with Carbon Dot Nanocarriers: A Multimodal SR-FTIR Spectroscopy and MALDI TOF Mass Spectrometry Study. in Cancers. 2022;14(5):1182.
doi:10.3390/cancers14051182 .

Nešić, Maja D., Dučić, Tanja, Algarra, Manuel, Popović, Iva A., Stepić, Milutin, Gonçalves, Mara, Petković, Marijana, "Lipid Status of A2780 Ovarian Cancer Cells after Treatment with Ruthenium Complex Modified with Carbon Dot Nanocarriers: A Multimodal SR-FTIR Spectroscopy and MALDI TOF Mass Spectrometry Study" in Cancers, 14, no. 5 (2022):1182,
https://doi.org/10.3390/cancers14051182 . .

TY  - JOUR
AU  - Nešić, Maja D.
AU  - Dučić, Tanja
AU  - Gonçalves, Mara
AU  - Stepić, Milutin
AU  - Algarra, Manuel
AU  - Soto, Juan
AU  - Gemović, Branislava S.
AU  - Bandosz, Teresa J.
AU  - Petković, Marijana
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10267
AB  - Carbon dots (CDs) and N-carbon dots (N-CDs) loaded with Ru-complex (CDs@RuCN, N-CDs@RuCN, respectively) were investigated as media imposing biochemical changes induced by UV illumination of ovarian cancer, A2780, and osteosarcoma, CAL72, cells. Synchrotron radiation-based Fourier Transform Infrared Spectroscopy was performed, and the spectra were subjected to a Principal Component Analysis. The CDs@RuCN and N-CDs@RuCN effects on cancer cells were analyzed by the theoretical modelling of the stability of the composite systems and a protein database search. Moreover, a detailed evaluation of surface and optical properties of CDs@RuCN and N-CDs@RuCN was carried out. Results demonstrated selective action of the CDs@RuCN and N-CDs@RuCN-based photodynamic therapy, with N-CDs@RuCN being the most active in inducing changes in A2780 and CDs@RuCN in CAL72 cells. We assume that different surface charges of nanoparticles led to direct interactions of N-CDs@RuCN with a Wnt signalling pathway in A2780 and those of CDs@RuCN with PI3–K/Akt in CAL72 cells and that further biochemical changes occurred upon light illumination.
T2  - Chemico-Biological Interactions
T1  - Biochemical changes in cancer cells induced by photoactive nanosystem based on carbon dots loaded with Ru-complex
VL  - 360
SP  - 109950
DO  - 10.1016/j.cbi.2022.109950
ER  - 

@article{
author = "Nešić, Maja D. and Dučić, Tanja and Gonçalves, Mara and Stepić, Milutin and Algarra, Manuel and Soto, Juan and Gemović, Branislava S. and Bandosz, Teresa J. and Petković, Marijana",
year = "2022",
abstract = "Carbon dots (CDs) and N-carbon dots (N-CDs) loaded with Ru-complex (CDs@RuCN, N-CDs@RuCN, respectively) were investigated as media imposing biochemical changes induced by UV illumination of ovarian cancer, A2780, and osteosarcoma, CAL72, cells. Synchrotron radiation-based Fourier Transform Infrared Spectroscopy was performed, and the spectra were subjected to a Principal Component Analysis. The CDs@RuCN and N-CDs@RuCN effects on cancer cells were analyzed by the theoretical modelling of the stability of the composite systems and a protein database search. Moreover, a detailed evaluation of surface and optical properties of CDs@RuCN and N-CDs@RuCN was carried out. Results demonstrated selective action of the CDs@RuCN and N-CDs@RuCN-based photodynamic therapy, with N-CDs@RuCN being the most active in inducing changes in A2780 and CDs@RuCN in CAL72 cells. We assume that different surface charges of nanoparticles led to direct interactions of N-CDs@RuCN with a Wnt signalling pathway in A2780 and those of CDs@RuCN with PI3–K/Akt in CAL72 cells and that further biochemical changes occurred upon light illumination.",
journal = "Chemico-Biological Interactions",
title = "Biochemical changes in cancer cells induced by photoactive nanosystem based on carbon dots loaded with Ru-complex",
volume = "360",
pages = "109950",
doi = "10.1016/j.cbi.2022.109950"
}

Nešić, M. D., Dučić, T., Gonçalves, M., Stepić, M., Algarra, M., Soto, J., Gemović, B. S., Bandosz, T. J.,& Petković, M.. (2022). Biochemical changes in cancer cells induced by photoactive nanosystem based on carbon dots loaded with Ru-complex. in Chemico-Biological Interactions, 360, 109950.
https://doi.org/10.1016/j.cbi.2022.109950

Nešić MD, Dučić T, Gonçalves M, Stepić M, Algarra M, Soto J, Gemović BS, Bandosz TJ, Petković M. Biochemical changes in cancer cells induced by photoactive nanosystem based on carbon dots loaded with Ru-complex. in Chemico-Biological Interactions. 2022;360:109950.
doi:10.1016/j.cbi.2022.109950 .

Nešić, Maja D., Dučić, Tanja, Gonçalves, Mara, Stepić, Milutin, Algarra, Manuel, Soto, Juan, Gemović, Branislava S., Bandosz, Teresa J., Petković, Marijana, "Biochemical changes in cancer cells induced by photoactive nanosystem based on carbon dots loaded with Ru-complex" in Chemico-Biological Interactions, 360 (2022):109950,
https://doi.org/10.1016/j.cbi.2022.109950 . .

TY  - CONF
AU  - Čolakov, Katarina
AU  - Nešić, Maja D.
AU  - Matijević, Milica
AU  - Stepić, Milutin
AU  - Petković, Marijana
AU  - Korićanac, Lela
AU  - Žakula, Jelena
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11011
AB  - Existing therapies for the treatment of pancreatic cancer are insufficiently effective and accompanied by a large number of side effects. Ruthenium complexes have shown promising antitumor properties in the previous studies 1,2 . Thus, in this investigation, anticancer effects of cis-dichlorobis (2,2'-bipyridyl-4,4'dicarboxylic acid)ruthenium(II) (Ru(II) complex) were evaluated using human pancreatic carcinoma cell lines MIA PaCa-2 and PANC-1 in vitro. Cell viability estimated with SRB assay showed significant antitumor activity of Ru(II) complex on MIA PaCa-2 (~55% of control) 48 and 72 h after treatment. On the other hand, PANC-1 cell viability was decreased only 72 h after treatment with the highest concentration of Ru(II) complex (~70% of control). Seven days after the treatment, analysis of cell survival using clonogenic assay showed a significant decrease in cell growth in both cell lines. Ru(II) complex also caused G 1 cell cycle arrest of ~13% in both cell lines. The highest percentage of apoptotic MIA PaCa-2 cells was obtained 48 h after treatment. In addition, the intracellular level of reactive oxygen species (ROS) was significantly increased, whereas cell migration was reduced in both cell lines. Summarized, Ru(II)complex demonstrates antitumor properties mediated by increased oxidative stress and also implies the antimetastatic potential, which deserves further study.
PB  - Belgrade : Faculty of Chemistry : Serbian Biochemical Society
C3  - Serbian Biochemical Society : 11th conference - "Amazing Biochemistry" : proceedings ; September 22-23, 2022; Novi Sad, Serbia
T1  - ROS-mediated proapoptotic antitumor effects of Ru(II) complex on pancreatic cancer cells
SP  - 155
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11011
ER  - 

@conference{
author = "Čolakov, Katarina and Nešić, Maja D. and Matijević, Milica and Stepić, Milutin and Petković, Marijana and Korićanac, Lela and Žakula, Jelena",
year = "2022",
abstract = "Existing therapies for the treatment of pancreatic cancer are insufficiently effective and accompanied by a large number of side effects. Ruthenium complexes have shown promising antitumor properties in the previous studies 1,2 . Thus, in this investigation, anticancer effects of cis-dichlorobis (2,2'-bipyridyl-4,4'dicarboxylic acid)ruthenium(II) (Ru(II) complex) were evaluated using human pancreatic carcinoma cell lines MIA PaCa-2 and PANC-1 in vitro. Cell viability estimated with SRB assay showed significant antitumor activity of Ru(II) complex on MIA PaCa-2 (~55% of control) 48 and 72 h after treatment. On the other hand, PANC-1 cell viability was decreased only 72 h after treatment with the highest concentration of Ru(II) complex (~70% of control). Seven days after the treatment, analysis of cell survival using clonogenic assay showed a significant decrease in cell growth in both cell lines. Ru(II) complex also caused G 1 cell cycle arrest of ~13% in both cell lines. The highest percentage of apoptotic MIA PaCa-2 cells was obtained 48 h after treatment. In addition, the intracellular level of reactive oxygen species (ROS) was significantly increased, whereas cell migration was reduced in both cell lines. Summarized, Ru(II)complex demonstrates antitumor properties mediated by increased oxidative stress and also implies the antimetastatic potential, which deserves further study.",
publisher = "Belgrade : Faculty of Chemistry : Serbian Biochemical Society",
journal = "Serbian Biochemical Society : 11th conference - "Amazing Biochemistry" : proceedings ; September 22-23, 2022; Novi Sad, Serbia",
title = "ROS-mediated proapoptotic antitumor effects of Ru(II) complex on pancreatic cancer cells",
pages = "155",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11011"
}

Čolakov, K., Nešić, M. D., Matijević, M., Stepić, M., Petković, M., Korićanac, L.,& Žakula, J.. (2022). ROS-mediated proapoptotic antitumor effects of Ru(II) complex on pancreatic cancer cells. in Serbian Biochemical Society : 11th conference - "Amazing Biochemistry" : proceedings ; September 22-23, 2022; Novi Sad, Serbia
Belgrade : Faculty of Chemistry : Serbian Biochemical Society., 155.
https://hdl.handle.net/21.15107/rcub_vinar_11011

Čolakov K, Nešić MD, Matijević M, Stepić M, Petković M, Korićanac L, Žakula J. ROS-mediated proapoptotic antitumor effects of Ru(II) complex on pancreatic cancer cells. in Serbian Biochemical Society : 11th conference - "Amazing Biochemistry" : proceedings ; September 22-23, 2022; Novi Sad, Serbia. 2022;:155.
https://hdl.handle.net/21.15107/rcub_vinar_11011 .

Čolakov, Katarina, Nešić, Maja D., Matijević, Milica, Stepić, Milutin, Petković, Marijana, Korićanac, Lela, Žakula, Jelena, "ROS-mediated proapoptotic antitumor effects of Ru(II) complex on pancreatic cancer cells" in Serbian Biochemical Society : 11th conference - "Amazing Biochemistry" : proceedings ; September 22-23, 2022; Novi Sad, Serbia (2022):155,
https://hdl.handle.net/21.15107/rcub_vinar_11011 .

TY  - JOUR
AU  - Nešić, Maja D.
AU  - Algarra, Manuel
AU  - Soto, Juan
AU  - Nenadović, Miloš
AU  - Popović, Iva A.
AU  - Petković, Marijana
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9930
AB  - Metal acetate complexes are highly interesting in designing and synthesizing metal–organic frameworks, which have potential applications in gas storage, molecular sieves, ion exchange, and catalysis. Cadmium is well recognized as an industrial pollutant and a food contaminant that severely affects human health. For these reasons, the detection and analysis of Cd are of great interest. A major challenge in studying cadmium compounds' structure is that Cd2+ can have a wide range of coordination numbers and diverse geometries. (MA)LDI is extremely useful for detecting Cd(OAc)2·2H2O and investigating Cd's complex and flexible nature. We applied LDI to detect and characterize the Cd-related clusters and MALDI approach to investigate the Cd(OAc)2x2H2O reactivity and detectability with the five different organic matrices. The results revealed that in the solid-state Cd(OAc)2x2H2O tend to form coordination polymers, and in the presence of coordinating ligands (matrix molecules) form smaller complexes. In addition, the correlation between Cd-related LOD and matrix features was observed and discussed, indicating that the LODs of this analyte strongly depend on the optical absorption of the matrix-analyte adduct.
T2  - Polyhedron
T1  - Detection of Cadmium-related ions by MALDI TOF mass spectrometry correlates with physicochemical properties of Cadmium/matrix adducts
VL  - 209
SP  - 115463
DO  - 10.1016/j.poly.2021.115463
ER  - 

@article{
author = "Nešić, Maja D. and Algarra, Manuel and Soto, Juan and Nenadović, Miloš and Popović, Iva A. and Petković, Marijana",
year = "2021",
abstract = "Metal acetate complexes are highly interesting in designing and synthesizing metal–organic frameworks, which have potential applications in gas storage, molecular sieves, ion exchange, and catalysis. Cadmium is well recognized as an industrial pollutant and a food contaminant that severely affects human health. For these reasons, the detection and analysis of Cd are of great interest. A major challenge in studying cadmium compounds' structure is that Cd2+ can have a wide range of coordination numbers and diverse geometries. (MA)LDI is extremely useful for detecting Cd(OAc)2·2H2O and investigating Cd's complex and flexible nature. We applied LDI to detect and characterize the Cd-related clusters and MALDI approach to investigate the Cd(OAc)2x2H2O reactivity and detectability with the five different organic matrices. The results revealed that in the solid-state Cd(OAc)2x2H2O tend to form coordination polymers, and in the presence of coordinating ligands (matrix molecules) form smaller complexes. In addition, the correlation between Cd-related LOD and matrix features was observed and discussed, indicating that the LODs of this analyte strongly depend on the optical absorption of the matrix-analyte adduct.",
journal = "Polyhedron",
title = "Detection of Cadmium-related ions by MALDI TOF mass spectrometry correlates with physicochemical properties of Cadmium/matrix adducts",
volume = "209",
pages = "115463",
doi = "10.1016/j.poly.2021.115463"
}

Nešić, M. D., Algarra, M., Soto, J., Nenadović, M., Popović, I. A.,& Petković, M.. (2021). Detection of Cadmium-related ions by MALDI TOF mass spectrometry correlates with physicochemical properties of Cadmium/matrix adducts. in Polyhedron, 209, 115463.
https://doi.org/10.1016/j.poly.2021.115463

Nešić MD, Algarra M, Soto J, Nenadović M, Popović IA, Petković M. Detection of Cadmium-related ions by MALDI TOF mass spectrometry correlates with physicochemical properties of Cadmium/matrix adducts. in Polyhedron. 2021;209:115463.
doi:10.1016/j.poly.2021.115463 .

Nešić, Maja D., Algarra, Manuel, Soto, Juan, Nenadović, Miloš, Popović, Iva A., Petković, Marijana, "Detection of Cadmium-related ions by MALDI TOF mass spectrometry correlates with physicochemical properties of Cadmium/matrix adducts" in Polyhedron, 209 (2021):115463,
https://doi.org/10.1016/j.poly.2021.115463 . .

TY  - CONF
AU  - Matijević, Milica
AU  - Petković, Marijana
AU  - Stepić, Milutin
AU  - Nešić, Maja
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12745
AB  - We have studied the cytotoxicity and phototoxicity of nitrogen-doped TiO2 (N-TiO2) nanoparticles (NPs) of the anatase crystal form for a possible human cervical (HeLa) cancer therapy. TiO2 is biocompatible with living structures (a) and its electrons in the valence band can be excited under ultraviolet (UV) light irradiation to produce reactive oxygen species and kill cancer cells. On the other hand, UV light is harmful and its penetration depth is short, which hinders its applications as a photosensitizer. Thus, we have chosen doping of TiO2 with nitrogen, since it was already shown that N-doping shifts the absorbance towards the visible region and enables photoactivation of the TiO2 with visible light, whereas the biocompatibility is preserved. (b) To assess the biocompatibility of N-TiO2 with the cancer cells, we have treated the HeLa cell line with three different concentrations of N-TiO2 NPs suspensions. After 24h of incubation in the dark, we have observed significant cytotoxicity in samples treated with concentration of 100 μg mL-1 of N-TiO2 NPs, whereas no significant cytotoxicity of the concentrations ≤50 μg mL-1 was detected. Hence, we have selected the treatment of 50 μg mL-1 of the N-TiO2 NPs for phototoxicity and cell imaging. Given that the N-TiO2 absorbs in the region of 400-450 nm, we have examined the viability of the HeLa cancer cell line upon the N-TiO2 treatment followed by continuous blue light irradiation (420 nm, 10 μW) for 15 minutes. The survival fraction of the cells treated with N-TiO2 NPs decreased significantly upon blue light irradiation. The intracellular distribution of N-TiO2 NPs was examined by laser scanning confocal microscopy. Most of the cells survived the treatment after 24h, and the agglomerates of N-TiO2 NPs were distributed mainly inside the cancer cells. The results of viability in the dark show that N-TiO2 NPs are not toxic for HeLa cells in the lower concentrations, and the evidence of cellular uptake points towards their biocompatibility. Furthermore, we have shown that it is feasible to induce cells’ phototoxicity upon treatment with N-TiO2 NPs and blue light irradiation.
C3  - 28th Young Research Fellow Meeting
T1  - Blue light-enhanced cytotoxic activity of nitrogen-doped TiO2 nanoparticles in human cervical cancer cells
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12745
ER  - 

@conference{
author = "Matijević, Milica and Petković, Marijana and Stepić, Milutin and Nešić, Maja",
year = "2021",
abstract = "We have studied the cytotoxicity and phototoxicity of nitrogen-doped TiO2 (N-TiO2) nanoparticles (NPs) of the anatase crystal form for a possible human cervical (HeLa) cancer therapy. TiO2 is biocompatible with living structures (a) and its electrons in the valence band can be excited under ultraviolet (UV) light irradiation to produce reactive oxygen species and kill cancer cells. On the other hand, UV light is harmful and its penetration depth is short, which hinders its applications as a photosensitizer. Thus, we have chosen doping of TiO2 with nitrogen, since it was already shown that N-doping shifts the absorbance towards the visible region and enables photoactivation of the TiO2 with visible light, whereas the biocompatibility is preserved. (b) To assess the biocompatibility of N-TiO2 with the cancer cells, we have treated the HeLa cell line with three different concentrations of N-TiO2 NPs suspensions. After 24h of incubation in the dark, we have observed significant cytotoxicity in samples treated with concentration of 100 μg mL-1 of N-TiO2 NPs, whereas no significant cytotoxicity of the concentrations ≤50 μg mL-1 was detected. Hence, we have selected the treatment of 50 μg mL-1 of the N-TiO2 NPs for phototoxicity and cell imaging. Given that the N-TiO2 absorbs in the region of 400-450 nm, we have examined the viability of the HeLa cancer cell line upon the N-TiO2 treatment followed by continuous blue light irradiation (420 nm, 10 μW) for 15 minutes. The survival fraction of the cells treated with N-TiO2 NPs decreased significantly upon blue light irradiation. The intracellular distribution of N-TiO2 NPs was examined by laser scanning confocal microscopy. Most of the cells survived the treatment after 24h, and the agglomerates of N-TiO2 NPs were distributed mainly inside the cancer cells. The results of viability in the dark show that N-TiO2 NPs are not toxic for HeLa cells in the lower concentrations, and the evidence of cellular uptake points towards their biocompatibility. Furthermore, we have shown that it is feasible to induce cells’ phototoxicity upon treatment with N-TiO2 NPs and blue light irradiation.",
journal = "28th Young Research Fellow Meeting",
title = "Blue light-enhanced cytotoxic activity of nitrogen-doped TiO2 nanoparticles in human cervical cancer cells",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12745"
}

Matijević, M., Petković, M., Stepić, M.,& Nešić, M.. (2021). Blue light-enhanced cytotoxic activity of nitrogen-doped TiO2 nanoparticles in human cervical cancer cells. in 28th Young Research Fellow Meeting.
https://hdl.handle.net/21.15107/rcub_vinar_12745

Matijević M, Petković M, Stepić M, Nešić M. Blue light-enhanced cytotoxic activity of nitrogen-doped TiO2 nanoparticles in human cervical cancer cells. in 28th Young Research Fellow Meeting. 2021;.
https://hdl.handle.net/21.15107/rcub_vinar_12745 .

Matijević, Milica, Petković, Marijana, Stepić, Milutin, Nešić, Maja, "Blue light-enhanced cytotoxic activity of nitrogen-doped TiO2 nanoparticles in human cervical cancer cells" in 28th Young Research Fellow Meeting (2021),
https://hdl.handle.net/21.15107/rcub_vinar_12745 .

TY  - JOUR
AU  - Matijević, Milica
AU  - Žakula, Jelena
AU  - Korićanac, Lela
AU  - Radoičić, Marija B.
AU  - Liang, Xinyue
AU  - Mi, Lan
AU  - Filipović Tričković, Jelena G.
AU  - Valenta-Šobot, Ana
AU  - Stanković, Maja N.
AU  - Nakarada, Đura
AU  - Mojović, Miloš
AU  - Petković, Marijana
AU  - Stepić, Milutin
AU  - Nešić, Maja D.
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9908
AB  - In this study, C-doped TiO2 nanoparticles (C-TiO2) were prepared and tested as a photosensitizer for visible-light-driven photodynamic therapy against cervical cancer cells (HeLa). X-ray diffraction and Transmission Electron Microscopy confirmed the anatase form of nanoparticles, spherical shape, and size distribution from 5 to 15 nm. Ultraviolet–visible light spectroscopy showed that C doping of TiO2 enhances the optical absorption in the visible light range caused by a bandgap narrowing. The photo-cytotoxic activity of C-TiO2 was investigated in vitro against HeLa cells. The lack of dark cytotoxicity indicates good biocompatibility of C-TiO2. In contrast, a combination with blue light significantly reduced the survival of HeLa cells: illumination only decreased cell viability by 30% (15 min of illumination, 120 µW power), and 60% when HeLa cells were preincubated with C-TiO2. We have also confirmed blue light-induced C-TiO2-catalyzed generation of reactive oxygen species in vitro and intracellularly. Oxidative stress triggered by C-TiO2/blue light was the leading cause of HeLa cell death. Fluorescent labeling of treated HeLa cells showed distinct morphological changes after the C-TiO2/blue light treatment. Unlike blue light illumination, which caused the appearance of large necrotic cells with deformed nuclei, cytoplasm swelling, and membrane blebbing, a combination of C-TiO2/blue light leads to controlled cell death, thus providing a better outcome of local anticancer therapy.
T2  - Photochemical and Photobiological Sciences
T1  - Controlled killing of human cervical cancer cells by combined action of blue light and C-doped TiO2 nanoparticles
VL  - 20
IS  - 8
SP  - 1087
EP  - 1098
DO  - 10.1007/s43630-021-00082-2
ER  - 

@article{
author = "Matijević, Milica and Žakula, Jelena and Korićanac, Lela and Radoičić, Marija B. and Liang, Xinyue and Mi, Lan and Filipović Tričković, Jelena G. and Valenta-Šobot, Ana and Stanković, Maja N. and Nakarada, Đura and Mojović, Miloš and Petković, Marijana and Stepić, Milutin and Nešić, Maja D.",
year = "2021",
abstract = "In this study, C-doped TiO2 nanoparticles (C-TiO2) were prepared and tested as a photosensitizer for visible-light-driven photodynamic therapy against cervical cancer cells (HeLa). X-ray diffraction and Transmission Electron Microscopy confirmed the anatase form of nanoparticles, spherical shape, and size distribution from 5 to 15 nm. Ultraviolet–visible light spectroscopy showed that C doping of TiO2 enhances the optical absorption in the visible light range caused by a bandgap narrowing. The photo-cytotoxic activity of C-TiO2 was investigated in vitro against HeLa cells. The lack of dark cytotoxicity indicates good biocompatibility of C-TiO2. In contrast, a combination with blue light significantly reduced the survival of HeLa cells: illumination only decreased cell viability by 30% (15 min of illumination, 120 µW power), and 60% when HeLa cells were preincubated with C-TiO2. We have also confirmed blue light-induced C-TiO2-catalyzed generation of reactive oxygen species in vitro and intracellularly. Oxidative stress triggered by C-TiO2/blue light was the leading cause of HeLa cell death. Fluorescent labeling of treated HeLa cells showed distinct morphological changes after the C-TiO2/blue light treatment. Unlike blue light illumination, which caused the appearance of large necrotic cells with deformed nuclei, cytoplasm swelling, and membrane blebbing, a combination of C-TiO2/blue light leads to controlled cell death, thus providing a better outcome of local anticancer therapy.",
journal = "Photochemical and Photobiological Sciences",
title = "Controlled killing of human cervical cancer cells by combined action of blue light and C-doped TiO2 nanoparticles",
volume = "20",
number = "8",
pages = "1087-1098",
doi = "10.1007/s43630-021-00082-2"
}

Matijević, M., Žakula, J., Korićanac, L., Radoičić, M. B., Liang, X., Mi, L., Filipović Tričković, J. G., Valenta-Šobot, A., Stanković, M. N., Nakarada, Đ., Mojović, M., Petković, M., Stepić, M.,& Nešić, M. D.. (2021). Controlled killing of human cervical cancer cells by combined action of blue light and C-doped TiO2 nanoparticles. in Photochemical and Photobiological Sciences, 20(8), 1087-1098.
https://doi.org/10.1007/s43630-021-00082-2

Matijević M, Žakula J, Korićanac L, Radoičić MB, Liang X, Mi L, Filipović Tričković JG, Valenta-Šobot A, Stanković MN, Nakarada Đ, Mojović M, Petković M, Stepić M, Nešić MD. Controlled killing of human cervical cancer cells by combined action of blue light and C-doped TiO2 nanoparticles. in Photochemical and Photobiological Sciences. 2021;20(8):1087-1098.
doi:10.1007/s43630-021-00082-2 .

Matijević, Milica, Žakula, Jelena, Korićanac, Lela, Radoičić, Marija B., Liang, Xinyue, Mi, Lan, Filipović Tričković, Jelena G., Valenta-Šobot, Ana, Stanković, Maja N., Nakarada, Đura, Mojović, Miloš, Petković, Marijana, Stepić, Milutin, Nešić, Maja D., "Controlled killing of human cervical cancer cells by combined action of blue light and C-doped TiO2 nanoparticles" in Photochemical and Photobiological Sciences, 20, no. 8 (2021):1087-1098,
https://doi.org/10.1007/s43630-021-00082-2 . .

TY  - CONF
AU  - Nešić, Maja D.
AU  - Matijević, Milica
AU  - Stepić, Milutin
AU  - Petković, Marijana
AU  - Korićanac, Lela
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12467
AB  - Platinum-based complexes represent the mainstay of treatment for various cancer types. However, their usage is often restricted by numerous side effects or intrinsic and acquired resistance. Therefore, significant research efforts have focused on developing therapeutics based on other transition metals, such as ruthenium 1,2. In this study, effects of transition metal complex, cis-dichlorobis (2,2ʹ-bipyridyl-4,4ʹ-dicarboxylic acid)ruthenium(II) (Ru(II) complex) were analyzed on A375 human melanoma and HeLa cell growth, adhesion ability andmigration. Cell viability assay indicated significant antitumor activity of Ru(II) complex on A375 (~60% of control) up to 72 h after treatment, but not on HeLa cells. However, analysis by clonogenic assay showed that growth of both cell lines was decreased 7 days after treatment. Growth inhibition was followed by G1 phase cell cycle arrest (5–10% G1 increase for A375 and 5–8% for HeLa cells compared to control). Moreover, Ru(II) complex increased adhesivity of A375 and HeLa cells by 11 and 16 % respectively and decreased cell migration, as shown by scratch assay. The obtained results indicate that the analyzed Ru(II) complex is a promising metallodrug, as itinduced growth inhibition of A375 and HeLa cells through induction of G1 arrest and decreased metastatic potential of these cells through the increase ofadhesivity and decrease of cell migration.
C3  - Serbian Biochemical Society Tenth Conference : “Biochemical Insights into Molecular Mechanisms”
T1  - Antitumor effect of Ru(II) complex on A375 and HeLa cell growth, migration and adhesion ability
SP  - 76
EP  - 76
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12467
ER  - 

@conference{
author = "Nešić, Maja D. and Matijević, Milica and Stepić, Milutin and Petković, Marijana and Korićanac, Lela",
year = "2021",
abstract = "Platinum-based complexes represent the mainstay of treatment for various cancer types. However, their usage is often restricted by numerous side effects or intrinsic and acquired resistance. Therefore, significant research efforts have focused on developing therapeutics based on other transition metals, such as ruthenium 1,2. In this study, effects of transition metal complex, cis-dichlorobis (2,2ʹ-bipyridyl-4,4ʹ-dicarboxylic acid)ruthenium(II) (Ru(II) complex) were analyzed on A375 human melanoma and HeLa cell growth, adhesion ability andmigration. Cell viability assay indicated significant antitumor activity of Ru(II) complex on A375 (~60% of control) up to 72 h after treatment, but not on HeLa cells. However, analysis by clonogenic assay showed that growth of both cell lines was decreased 7 days after treatment. Growth inhibition was followed by G1 phase cell cycle arrest (5–10% G1 increase for A375 and 5–8% for HeLa cells compared to control). Moreover, Ru(II) complex increased adhesivity of A375 and HeLa cells by 11 and 16 % respectively and decreased cell migration, as shown by scratch assay. The obtained results indicate that the analyzed Ru(II) complex is a promising metallodrug, as itinduced growth inhibition of A375 and HeLa cells through induction of G1 arrest and decreased metastatic potential of these cells through the increase ofadhesivity and decrease of cell migration.",
journal = "Serbian Biochemical Society Tenth Conference : “Biochemical Insights into Molecular Mechanisms”",
title = "Antitumor effect of Ru(II) complex on A375 and HeLa cell growth, migration and adhesion ability",
pages = "76-76",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12467"
}

Nešić, M. D., Matijević, M., Stepić, M., Petković, M.,& Korićanac, L.. (2021). Antitumor effect of Ru(II) complex on A375 and HeLa cell growth, migration and adhesion ability. in Serbian Biochemical Society Tenth Conference : “Biochemical Insights into Molecular Mechanisms”, 76-76.
https://hdl.handle.net/21.15107/rcub_vinar_12467

Nešić MD, Matijević M, Stepić M, Petković M, Korićanac L. Antitumor effect of Ru(II) complex on A375 and HeLa cell growth, migration and adhesion ability. in Serbian Biochemical Society Tenth Conference : “Biochemical Insights into Molecular Mechanisms”. 2021;:76-76.
https://hdl.handle.net/21.15107/rcub_vinar_12467 .

Nešić, Maja D., Matijević, Milica, Stepić, Milutin, Petković, Marijana, Korićanac, Lela, "Antitumor effect of Ru(II) complex on A375 and HeLa cell growth, migration and adhesion ability" in Serbian Biochemical Society Tenth Conference : “Biochemical Insights into Molecular Mechanisms” (2021):76-76,
https://hdl.handle.net/21.15107/rcub_vinar_12467 .

TY  - JOUR
AU  - Matijević, Milica
AU  - Nakarada, Đura
AU  - Liang, Xinyue
AU  - Korićanac, Lela
AU  - Rajsiglova, Lenka
AU  - Vannucci, Luca
AU  - Nešić, Maja D.
AU  - Vranješ, Mila
AU  - Mojović, Miloš D.
AU  - Mi, Lan
AU  - Estrela-Lopis, Irina
AU  - Böttner, Julia
AU  - Šaponjić, Zoran
AU  - Petković, Marijana
AU  - Stepić, Milutin
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9058
AB  - TiO2 prolatenanospheroids (PNSs) may be photosensitizers (PSs), which act by catalyzation of hydroxyl radical (∙OH) formation upon light illumination. ∙OH might, in turn, contribute to killing of cancer cells. On the other hand, there is great concern about toxicity in the dark of TiO2 nanoparticles in general. In this work, we have investigated the biocompatibility of TiO2 PNSs of the anatase crystal form (length between 100 and 300 nm and width 50 nm) in the dark with immune cells and light-induced cytotoxicity on several cancer cell lines. The effects of the treatment of different cell lines with several concentrations of TiO2 PNSs suspensions showed the specifics of cells’ viability and the intracellular localization. The results of in vitro studies obtained by cytotoxicity assays adjusted to individual cell lines’ metabolism point towards the biocompatibility of TiO2 PNSs at low and moderate concentrations in the dark, which neither kill the cells, nor induce activation of the immune system cells. Laser scanning confocal microscopy revealed that PNSs are taken up by cells, and insight into the intracellular distribution was obtained in this study.
T2  - Journal of Nanoparticle Research
T1  - Biocompatibility of TiO2 prolate nanospheroids as a potential photosenzitizer in therapy of cancer
VL  - 22
IS  - 7
SP  - 175
DO  - 10.1007/s11051-020-04899-3
ER  - 

@article{
author = "Matijević, Milica and Nakarada, Đura and Liang, Xinyue and Korićanac, Lela and Rajsiglova, Lenka and Vannucci, Luca and Nešić, Maja D. and Vranješ, Mila and Mojović, Miloš D. and Mi, Lan and Estrela-Lopis, Irina and Böttner, Julia and Šaponjić, Zoran and Petković, Marijana and Stepić, Milutin",
year = "2020",
abstract = "TiO2 prolatenanospheroids (PNSs) may be photosensitizers (PSs), which act by catalyzation of hydroxyl radical (∙OH) formation upon light illumination. ∙OH might, in turn, contribute to killing of cancer cells. On the other hand, there is great concern about toxicity in the dark of TiO2 nanoparticles in general. In this work, we have investigated the biocompatibility of TiO2 PNSs of the anatase crystal form (length between 100 and 300 nm and width 50 nm) in the dark with immune cells and light-induced cytotoxicity on several cancer cell lines. The effects of the treatment of different cell lines with several concentrations of TiO2 PNSs suspensions showed the specifics of cells’ viability and the intracellular localization. The results of in vitro studies obtained by cytotoxicity assays adjusted to individual cell lines’ metabolism point towards the biocompatibility of TiO2 PNSs at low and moderate concentrations in the dark, which neither kill the cells, nor induce activation of the immune system cells. Laser scanning confocal microscopy revealed that PNSs are taken up by cells, and insight into the intracellular distribution was obtained in this study.",
journal = "Journal of Nanoparticle Research",
title = "Biocompatibility of TiO2 prolate nanospheroids as a potential photosenzitizer in therapy of cancer",
volume = "22",
number = "7",
pages = "175",
doi = "10.1007/s11051-020-04899-3"
}

Matijević, M., Nakarada, Đ., Liang, X., Korićanac, L., Rajsiglova, L., Vannucci, L., Nešić, M. D., Vranješ, M., Mojović, M. D., Mi, L., Estrela-Lopis, I., Böttner, J., Šaponjić, Z., Petković, M.,& Stepić, M.. (2020). Biocompatibility of TiO2 prolate nanospheroids as a potential photosenzitizer in therapy of cancer. in Journal of Nanoparticle Research, 22(7), 175.
https://doi.org/10.1007/s11051-020-04899-3

Matijević M, Nakarada Đ, Liang X, Korićanac L, Rajsiglova L, Vannucci L, Nešić MD, Vranješ M, Mojović MD, Mi L, Estrela-Lopis I, Böttner J, Šaponjić Z, Petković M, Stepić M. Biocompatibility of TiO2 prolate nanospheroids as a potential photosenzitizer in therapy of cancer. in Journal of Nanoparticle Research. 2020;22(7):175.
doi:10.1007/s11051-020-04899-3 .

Matijević, Milica, Nakarada, Đura, Liang, Xinyue, Korićanac, Lela, Rajsiglova, Lenka, Vannucci, Luca, Nešić, Maja D., Vranješ, Mila, Mojović, Miloš D., Mi, Lan, Estrela-Lopis, Irina, Böttner, Julia, Šaponjić, Zoran, Petković, Marijana, Stepić, Milutin, "Biocompatibility of TiO2 prolate nanospheroids as a potential photosenzitizer in therapy of cancer" in Journal of Nanoparticle Research, 22, no. 7 (2020):175,
https://doi.org/10.1007/s11051-020-04899-3 . .

TY  - JOUR
AU  - Nešić, Maja D.
AU  - Dučić, Tanja
AU  - Liang, Xinyue
AU  - Algarra, Manuel
AU  - Mi, Lan
AU  - Korićanac, Lela
AU  - Žakula, Jelena
AU  - Kop, Tatjana
AU  - Bjelaković, Mira
AU  - Mitrović, Aleksandra
AU  - Gojgić Cvijović, Gordana D.
AU  - Stepić, Milutin
AU  - Petković, Marijana
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9712
AB  - Objects of the present study are improved fullerene C60 drug carrier properties trough encapsulation by microbial polysaccharides, levan (LEV), pullulan (PUL), and their hydrophobized cholesterol-derivatives (CHL and CHP), that show better interaction with cancer cells. The zeta potential, polydispersity index, and the diameter of particles were determined, and their cytotoxicity against three cancer cell lines were tested. Biochemical changes in HeLa cells are analyzed by synchrotron radiation (SR) FTIR spectro-microscopy combined with the principal component analysis (PCA). The most significant changes occur in HeLa cells treated with LEV-C60 and correspond to the changes in the protein region, i.e. Amide I band, and the changes in the structure of lipid bodies and membrane fluidity are evident. The highest cytotoxicity was also induced by LEV-C60. In HeLa cells, cytotoxicity could not be strictly associated with biochemical changes in lipids, proteins and nucleic acids, but these findings are significant contribution to the study of the mechanism of interaction of C60-based nanoparticles with cellular biomolecules. In conclusion, LEV, PUL, CHL, and CHP enhanced fullerene C60 potential to be used as target drug delivery system with the ability to induce specific intracellular changes in HeLa cancer cells.
T2  - International Journal of Biological Macromolecules
T1  - SR-FTIR spectro-microscopic interaction study of biochemical changes in HeLa cells induced by Levan-C60, Pullulan-C60, and their cholesterol-derivatives
VL  - 165
SP  - 2541
EP  - 2549
DO  - 10.1016/j.ijbiomac.2020.10.141
ER  - 

@article{
author = "Nešić, Maja D. and Dučić, Tanja and Liang, Xinyue and Algarra, Manuel and Mi, Lan and Korićanac, Lela and Žakula, Jelena and Kop, Tatjana and Bjelaković, Mira and Mitrović, Aleksandra and Gojgić Cvijović, Gordana D. and Stepić, Milutin and Petković, Marijana",
year = "2020",
abstract = "Objects of the present study are improved fullerene C60 drug carrier properties trough encapsulation by microbial polysaccharides, levan (LEV), pullulan (PUL), and their hydrophobized cholesterol-derivatives (CHL and CHP), that show better interaction with cancer cells. The zeta potential, polydispersity index, and the diameter of particles were determined, and their cytotoxicity against three cancer cell lines were tested. Biochemical changes in HeLa cells are analyzed by synchrotron radiation (SR) FTIR spectro-microscopy combined with the principal component analysis (PCA). The most significant changes occur in HeLa cells treated with LEV-C60 and correspond to the changes in the protein region, i.e. Amide I band, and the changes in the structure of lipid bodies and membrane fluidity are evident. The highest cytotoxicity was also induced by LEV-C60. In HeLa cells, cytotoxicity could not be strictly associated with biochemical changes in lipids, proteins and nucleic acids, but these findings are significant contribution to the study of the mechanism of interaction of C60-based nanoparticles with cellular biomolecules. In conclusion, LEV, PUL, CHL, and CHP enhanced fullerene C60 potential to be used as target drug delivery system with the ability to induce specific intracellular changes in HeLa cancer cells.",
journal = "International Journal of Biological Macromolecules",
title = "SR-FTIR spectro-microscopic interaction study of biochemical changes in HeLa cells induced by Levan-C60, Pullulan-C60, and their cholesterol-derivatives",
volume = "165",
pages = "2541-2549",
doi = "10.1016/j.ijbiomac.2020.10.141"
}

Nešić, M. D., Dučić, T., Liang, X., Algarra, M., Mi, L., Korićanac, L., Žakula, J., Kop, T., Bjelaković, M., Mitrović, A., Gojgić Cvijović, G. D., Stepić, M.,& Petković, M.. (2020). SR-FTIR spectro-microscopic interaction study of biochemical changes in HeLa cells induced by Levan-C60, Pullulan-C60, and their cholesterol-derivatives. in International Journal of Biological Macromolecules, 165, 2541-2549.
https://doi.org/10.1016/j.ijbiomac.2020.10.141

Nešić MD, Dučić T, Liang X, Algarra M, Mi L, Korićanac L, Žakula J, Kop T, Bjelaković M, Mitrović A, Gojgić Cvijović GD, Stepić M, Petković M. SR-FTIR spectro-microscopic interaction study of biochemical changes in HeLa cells induced by Levan-C60, Pullulan-C60, and their cholesterol-derivatives. in International Journal of Biological Macromolecules. 2020;165:2541-2549.
doi:10.1016/j.ijbiomac.2020.10.141 .

Nešić, Maja D., Dučić, Tanja, Liang, Xinyue, Algarra, Manuel, Mi, Lan, Korićanac, Lela, Žakula, Jelena, Kop, Tatjana, Bjelaković, Mira, Mitrović, Aleksandra, Gojgić Cvijović, Gordana D., Stepić, Milutin, Petković, Marijana, "SR-FTIR spectro-microscopic interaction study of biochemical changes in HeLa cells induced by Levan-C60, Pullulan-C60, and their cholesterol-derivatives" in International Journal of Biological Macromolecules, 165 (2020):2541-2549,
https://doi.org/10.1016/j.ijbiomac.2020.10.141 . .

TY  - CONF
AU  - Nešić, Maja D.
AU  - Stepić, Milutin
AU  - Korićanac, Lela
AU  - Radoičić, Marija
AU  - Šaponjić, Zoran
AU  - Popović, Iva
AU  - Petković, Marijana
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11891
AB  - There has been a growing demand for development and improvement of cancer treatment in order to overcome disadvantages and limitations of traditional chemotherapy such as resistance, toxicity, and activity against a small number of tumor types. Photodynamic therapy is a rapidly developing cancer treatment that utilizes the combination of photoactive drug and/or carrier and light as an external stimulus to destroy tumors, achieve a maximum concentration of the drug on tumor site, reduce side effects of drug onto the healthy tissue, enable dosage control, and more effective treatment which could improve outcome of therapy [1]. We investigated possibility to use ТiО2 nanoparticles as a carrier for potential antitumor drug [Ru(II)(dcbpy)2Cl2], cis-dichlorobis (2, 2'-bipyridyl-4, 4'-dicarboxylicacid) ruthenium(II). Nanocomposite system has been formed by binding of ruthenium complex to the ТiО2 nanoparticles. Components of the system are selected according to their preferences, such as biocompatibility, photo activity, and easy surface modification for ТiО2, and less toxicity, significant activity against cancer metastases, and activity on tumors that were resistant to a variety of standard chemotherapeutic agents for Ru-complexes. Both components of the system are also photoactive, therefore potential for system manipulation and use in photodinamic therapy has been investigated by irradiation with UV and visible light. Additionally, the feasibility of using this system as a light-triggered drug delivery system was shown on amelanotic melanoma cancer line. The experimental results revealed a potential of nanocomposite system for long-term constant release of complex which is suitable for clinical practice. The further investigation of nanocomposite system indicated that it exhibited UV and red light susceptible drug release behavior [2]. More precisely, the system demonstrated slower complex release upon visible and increased release rate upon UV light illumination which was also in good correlation with the light–dependent cytotoxicity of the system demonstrated on amelanotic melanoma cancer line. The melanoma cancer cell death is enhanced by UV and reduced by red light in the presence of investigated nanocomposite system [3]. All obtained results suggested that nanocomposite system may have a potential use as a light sensitive drug delivery system in photodynamic therapy which could significantly contribute to development of more efficient and less invasive therapy of melanoma which is highly aggressive and deadliest form of skin cancer.
PB  - Belgrade : Vinča Institute of Nuclear Sciences, University of Belgrade
C3  - PHOTONICA2019 : 7th International School and Conference on Photonics & Machine Learning with Photonics Symposium : Book of abstracts
T1  - Development of photo-sensitive nanocomposite system for controlled metallo-drug delivery in skin cancer therapy
SP  - 39
EP  - 39
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11891
ER  - 

@conference{
author = "Nešić, Maja D. and Stepić, Milutin and Korićanac, Lela and Radoičić, Marija and Šaponjić, Zoran and Popović, Iva and Petković, Marijana",
year = "2019",
abstract = "There has been a growing demand for development and improvement of cancer treatment in order to overcome disadvantages and limitations of traditional chemotherapy such as resistance, toxicity, and activity against a small number of tumor types. Photodynamic therapy is a rapidly developing cancer treatment that utilizes the combination of photoactive drug and/or carrier and light as an external stimulus to destroy tumors, achieve a maximum concentration of the drug on tumor site, reduce side effects of drug onto the healthy tissue, enable dosage control, and more effective treatment which could improve outcome of therapy [1]. We investigated possibility to use ТiО2 nanoparticles as a carrier for potential antitumor drug [Ru(II)(dcbpy)2Cl2], cis-dichlorobis (2, 2'-bipyridyl-4, 4'-dicarboxylicacid) ruthenium(II). Nanocomposite system has been formed by binding of ruthenium complex to the ТiО2 nanoparticles. Components of the system are selected according to their preferences, such as biocompatibility, photo activity, and easy surface modification for ТiО2, and less toxicity, significant activity against cancer metastases, and activity on tumors that were resistant to a variety of standard chemotherapeutic agents for Ru-complexes. Both components of the system are also photoactive, therefore potential for system manipulation and use in photodinamic therapy has been investigated by irradiation with UV and visible light. Additionally, the feasibility of using this system as a light-triggered drug delivery system was shown on amelanotic melanoma cancer line. The experimental results revealed a potential of nanocomposite system for long-term constant release of complex which is suitable for clinical practice. The further investigation of nanocomposite system indicated that it exhibited UV and red light susceptible drug release behavior [2]. More precisely, the system demonstrated slower complex release upon visible and increased release rate upon UV light illumination which was also in good correlation with the light–dependent cytotoxicity of the system demonstrated on amelanotic melanoma cancer line. The melanoma cancer cell death is enhanced by UV and reduced by red light in the presence of investigated nanocomposite system [3]. All obtained results suggested that nanocomposite system may have a potential use as a light sensitive drug delivery system in photodynamic therapy which could significantly contribute to development of more efficient and less invasive therapy of melanoma which is highly aggressive and deadliest form of skin cancer.",
publisher = "Belgrade : Vinča Institute of Nuclear Sciences, University of Belgrade",
journal = "PHOTONICA2019 : 7th International School and Conference on Photonics & Machine Learning with Photonics Symposium : Book of abstracts",
title = "Development of photo-sensitive nanocomposite system for controlled metallo-drug delivery in skin cancer therapy",
pages = "39-39",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11891"
}

Nešić, M. D., Stepić, M., Korićanac, L., Radoičić, M., Šaponjić, Z., Popović, I.,& Petković, M.. (2019). Development of photo-sensitive nanocomposite system for controlled metallo-drug delivery in skin cancer therapy. in PHOTONICA2019 : 7th International School and Conference on Photonics & Machine Learning with Photonics Symposium : Book of abstracts
Belgrade : Vinča Institute of Nuclear Sciences, University of Belgrade., 39-39.
https://hdl.handle.net/21.15107/rcub_vinar_11891

Nešić MD, Stepić M, Korićanac L, Radoičić M, Šaponjić Z, Popović I, Petković M. Development of photo-sensitive nanocomposite system for controlled metallo-drug delivery in skin cancer therapy. in PHOTONICA2019 : 7th International School and Conference on Photonics & Machine Learning with Photonics Symposium : Book of abstracts. 2019;:39-39.
https://hdl.handle.net/21.15107/rcub_vinar_11891 .

Nešić, Maja D., Stepić, Milutin, Korićanac, Lela, Radoičić, Marija, Šaponjić, Zoran, Popović, Iva, Petković, Marijana, "Development of photo-sensitive nanocomposite system for controlled metallo-drug delivery in skin cancer therapy" in PHOTONICA2019 : 7th International School and Conference on Photonics & Machine Learning with Photonics Symposium : Book of abstracts (2019):39-39,
https://hdl.handle.net/21.15107/rcub_vinar_11891 .

TY  - JOUR
AU  - Matijević, Milica
AU  - Nešić, Maja
AU  - Stepić, Milutin
AU  - Radoičić, Marija B.
AU  - Šaponjić, Zoran
AU  - Petković, Marijana
PY  - 2018
UR  - http://link.springer.com/10.1007/s11082-018-1495-z
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7697
AB  - Photodynamic therapy implies a combined use of a photosensitizing medicament and low-intensity light to cause selective damage to the target tissue—tumor. As potential medicament, we use Ru(II)(dcbpy)2Cl2complex, and in order to achieve better photosensitization properties, the Ru complex was attached to the nano carrier—TiO2nanoparticles. Additionally, this nanocomposite system was encapsulated in the phospholipid vesicles, which could be classified as small unilamellar vesicles, based on the technique of production. The complex-release tests were performed under light illumination, at pH 5, characteristic for tumor cells` interior and compared with the release pattern at pH 7, characteristic for the serum, i.e. physiological solution.
T2  - Optical and Quantum Electronics
T1  - Light controllable TiO2-Ru nanocomposite system encapsulated in phospholipid unilamellar vesicles for anti-cancer photodynamic therapy
VL  - 50
IS  - 6
SP  - 232
DO  - 10.1007/s11082-018-1495-z
ER  - 

@article{
author = "Matijević, Milica and Nešić, Maja and Stepić, Milutin and Radoičić, Marija B. and Šaponjić, Zoran and Petković, Marijana",
year = "2018",
abstract = "Photodynamic therapy implies a combined use of a photosensitizing medicament and low-intensity light to cause selective damage to the target tissue—tumor. As potential medicament, we use Ru(II)(dcbpy)2Cl2complex, and in order to achieve better photosensitization properties, the Ru complex was attached to the nano carrier—TiO2nanoparticles. Additionally, this nanocomposite system was encapsulated in the phospholipid vesicles, which could be classified as small unilamellar vesicles, based on the technique of production. The complex-release tests were performed under light illumination, at pH 5, characteristic for tumor cells` interior and compared with the release pattern at pH 7, characteristic for the serum, i.e. physiological solution.",
journal = "Optical and Quantum Electronics",
title = "Light controllable TiO2-Ru nanocomposite system encapsulated in phospholipid unilamellar vesicles for anti-cancer photodynamic therapy",
volume = "50",
number = "6",
pages = "232",
doi = "10.1007/s11082-018-1495-z"
}

Matijević, M., Nešić, M., Stepić, M., Radoičić, M. B., Šaponjić, Z.,& Petković, M.. (2018). Light controllable TiO2-Ru nanocomposite system encapsulated in phospholipid unilamellar vesicles for anti-cancer photodynamic therapy. in Optical and Quantum Electronics, 50(6), 232.
https://doi.org/10.1007/s11082-018-1495-z

Matijević M, Nešić M, Stepić M, Radoičić MB, Šaponjić Z, Petković M. Light controllable TiO2-Ru nanocomposite system encapsulated in phospholipid unilamellar vesicles for anti-cancer photodynamic therapy. in Optical and Quantum Electronics. 2018;50(6):232.
doi:10.1007/s11082-018-1495-z .

Matijević, Milica, Nešić, Maja, Stepić, Milutin, Radoičić, Marija B., Šaponjić, Zoran, Petković, Marijana, "Light controllable TiO2-Ru nanocomposite system encapsulated in phospholipid unilamellar vesicles for anti-cancer photodynamic therapy" in Optical and Quantum Electronics, 50, no. 6 (2018):232,
https://doi.org/10.1007/s11082-018-1495-z . .

TY  - JOUR
AU  - Matijević, Milica
AU  - Popović, Iva A.
AU  - Stepić, Milutin
AU  - Nešić, Maja D.
AU  - Radoičić, Marija B.
AU  - Stanković, Maja
AU  - Šaponjić, Zoran
AU  - Petković, Marijana
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9062
AB  - Among various nano-scaled materials composed from a spectrum of chemical compounds, inorganic nanoparticles are very attractive due to their physico-chemical properties, as well as their availability, simplicity, possibility of modifications, stability and biocompatibility. They are, on the one hand, an useful tool in advanced analytical chemistry, in particular for studying of biologically-relevant processes, but also important as functional parts of the systems designed for controlled and targeted delivery of medicaments for treatment of a variety of diseases and for imaging. So far, thousands of compounds and systems have been developed for the above-mentioned purposes, but there are only a few reviews dealing with these topics. The aim of this review is, thus, to summarize recent applications of nano-structured inorganic materials in the field of drug delivery, bioimaging and bioanalytics, and to give a prospective from the standpoint of biology-related applications.
T2  - Biologica Nyssana
T1  - Inorganic Nanoparticles In Biology: Drug Carriers And Auxiliary Tools In Bioimaging And Bioanalytics
VL  - 9
IS  - 1
SP  - 1
EP  - 19
DO  - 10.5281/zenodo.1470841
ER  - 

@article{
author = "Matijević, Milica and Popović, Iva A. and Stepić, Milutin and Nešić, Maja D. and Radoičić, Marija B. and Stanković, Maja and Šaponjić, Zoran and Petković, Marijana",
year = "2018",
abstract = "Among various nano-scaled materials composed from a spectrum of chemical compounds, inorganic nanoparticles are very attractive due to their physico-chemical properties, as well as their availability, simplicity, possibility of modifications, stability and biocompatibility. They are, on the one hand, an useful tool in advanced analytical chemistry, in particular for studying of biologically-relevant processes, but also important as functional parts of the systems designed for controlled and targeted delivery of medicaments for treatment of a variety of diseases and for imaging. So far, thousands of compounds and systems have been developed for the above-mentioned purposes, but there are only a few reviews dealing with these topics. The aim of this review is, thus, to summarize recent applications of nano-structured inorganic materials in the field of drug delivery, bioimaging and bioanalytics, and to give a prospective from the standpoint of biology-related applications.",
journal = "Biologica Nyssana",
title = "Inorganic Nanoparticles In Biology: Drug Carriers And Auxiliary Tools In Bioimaging And Bioanalytics",
volume = "9",
number = "1",
pages = "1-19",
doi = "10.5281/zenodo.1470841"
}

Matijević, M., Popović, I. A., Stepić, M., Nešić, M. D., Radoičić, M. B., Stanković, M., Šaponjić, Z.,& Petković, M.. (2018). Inorganic Nanoparticles In Biology: Drug Carriers And Auxiliary Tools In Bioimaging And Bioanalytics. in Biologica Nyssana, 9(1), 1-19.
https://doi.org/10.5281/zenodo.1470841

Matijević M, Popović IA, Stepić M, Nešić MD, Radoičić MB, Stanković M, Šaponjić Z, Petković M. Inorganic Nanoparticles In Biology: Drug Carriers And Auxiliary Tools In Bioimaging And Bioanalytics. in Biologica Nyssana. 2018;9(1):1-19.
doi:10.5281/zenodo.1470841 .

Matijević, Milica, Popović, Iva A., Stepić, Milutin, Nešić, Maja D., Radoičić, Marija B., Stanković, Maja, Šaponjić, Zoran, Petković, Marijana, "Inorganic Nanoparticles In Biology: Drug Carriers And Auxiliary Tools In Bioimaging And Bioanalytics" in Biologica Nyssana, 9, no. 1 (2018):1-19,
https://doi.org/10.5281/zenodo.1470841 . .

TY  - JOUR
AU  - Rakić-Kostić, Tijana M.
AU  - Bogojeski, Jovana V.
AU  - Popović, Iva A.
AU  - Nešić, Maja D.
AU  - Rajčić, Boris
AU  - Nišavić, Marija
AU  - Petković, Marijana
AU  - Veličković, Suzana
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1362
AB  - This paper presents optimization of matrix-assisted laser desorption/ionization (MALDI) time-of-flight (TOF) mass spectrometer (MS) instrumental parameters for the analysis of chloro(2,2 , 2 -terpyridine) palladium(II) chloride dihydrate complex applying design of experiments methodology (DoE). This complex is of interest for potential use in the cancer therapy. DoE methodology was proved to succeed in optimization of many complex analytical problems. However, it has been poorly used for MALDI-TOF-MS optimization up to now. The theoretical mathematical relationships which explain the influence of important experimental factors (laser energy, grid voltage and number of laser shots) on the selected responses (signal to noise - S/N ratio and the resolution - R of the leading peak) is established. The optimal instrumental settings providing maximal S/N and R are identified and experimentally verified.
T2  - Hemijska industrija
T1  - Experimental design for optimizing MALDI-TOF-MS analysis of palladium complexes
VL  - 71
IS  - 4
SP  - 281
EP  - 288
DO  - 10.2298/HEMIND160614038R
ER  - 

@article{
author = "Rakić-Kostić, Tijana M. and Bogojeski, Jovana V. and Popović, Iva A. and Nešić, Maja D. and Rajčić, Boris and Nišavić, Marija and Petković, Marijana and Veličković, Suzana",
year = "2017",
abstract = "This paper presents optimization of matrix-assisted laser desorption/ionization (MALDI) time-of-flight (TOF) mass spectrometer (MS) instrumental parameters for the analysis of chloro(2,2 , 2 -terpyridine) palladium(II) chloride dihydrate complex applying design of experiments methodology (DoE). This complex is of interest for potential use in the cancer therapy. DoE methodology was proved to succeed in optimization of many complex analytical problems. However, it has been poorly used for MALDI-TOF-MS optimization up to now. The theoretical mathematical relationships which explain the influence of important experimental factors (laser energy, grid voltage and number of laser shots) on the selected responses (signal to noise - S/N ratio and the resolution - R of the leading peak) is established. The optimal instrumental settings providing maximal S/N and R are identified and experimentally verified.",
journal = "Hemijska industrija",
title = "Experimental design for optimizing MALDI-TOF-MS analysis of palladium complexes",
volume = "71",
number = "4",
pages = "281-288",
doi = "10.2298/HEMIND160614038R"
}

Rakić-Kostić, T. M., Bogojeski, J. V., Popović, I. A., Nešić, M. D., Rajčić, B., Nišavić, M., Petković, M.,& Veličković, S.. (2017). Experimental design for optimizing MALDI-TOF-MS analysis of palladium complexes. in Hemijska industrija, 71(4), 281-288.
https://doi.org/10.2298/HEMIND160614038R

Rakić-Kostić TM, Bogojeski JV, Popović IA, Nešić MD, Rajčić B, Nišavić M, Petković M, Veličković S. Experimental design for optimizing MALDI-TOF-MS analysis of palladium complexes. in Hemijska industrija. 2017;71(4):281-288.
doi:10.2298/HEMIND160614038R .

Rakić-Kostić, Tijana M., Bogojeski, Jovana V., Popović, Iva A., Nešić, Maja D., Rajčić, Boris, Nišavić, Marija, Petković, Marijana, Veličković, Suzana, "Experimental design for optimizing MALDI-TOF-MS analysis of palladium complexes" in Hemijska industrija, 71, no. 4 (2017):281-288,
https://doi.org/10.2298/HEMIND160614038R . .

TY  - JOUR
AU  - Kamčeva, Tina T.
AU  - Nešić, Maja D.
AU  - Stoiljković, Milovan
AU  - Popović, Iva A.
AU  - Miletić, Jadranka
AU  - Rajčić, Boris
AU  - Petković, Marijana
AU  - Veličković, Suzana
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1471
AB  - In this work it has been shown that both the laser desorption/ionization mass spectrometry (LDI MS) and the matrix assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI TOF MS) are the simple and quick methods for determination of relative natural isotopic distribution of lead. The analysis of metal salts with these approaches does not require any time-consuming preparation of samples: a single run can take only a minute, and numerous information can be obtained. Results obtained in this work show that chosen matrix has no negative effect on quantitative determination of lead isotopes and support once more the applicability of MALDI TOF MS for lead isotope distribution determination in the sample and accurate data are obtained. Additionally, the generation of PbnOn and PbnOn-1 (n: 2-6) clusters have been successfully achieved in the positive mode, using the both LDI and MALDI methods. All stoichiometries were confirmed using isotopic pattern modelling.
T2  - Hemijska industrija
T1  - Determination of isotopic distribution of lead by a matrix assisted laser desorption/ionization versus a laser desorption/ionization time of flight mass spectrometry
VL  - 71
IS  - 1
SP  - 19
EP  - 26
DO  - 10.2298/HEMIND151218013K
ER  - 

@article{
author = "Kamčeva, Tina T. and Nešić, Maja D. and Stoiljković, Milovan and Popović, Iva A. and Miletić, Jadranka and Rajčić, Boris and Petković, Marijana and Veličković, Suzana",
year = "2017",
abstract = "In this work it has been shown that both the laser desorption/ionization mass spectrometry (LDI MS) and the matrix assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI TOF MS) are the simple and quick methods for determination of relative natural isotopic distribution of lead. The analysis of metal salts with these approaches does not require any time-consuming preparation of samples: a single run can take only a minute, and numerous information can be obtained. Results obtained in this work show that chosen matrix has no negative effect on quantitative determination of lead isotopes and support once more the applicability of MALDI TOF MS for lead isotope distribution determination in the sample and accurate data are obtained. Additionally, the generation of PbnOn and PbnOn-1 (n: 2-6) clusters have been successfully achieved in the positive mode, using the both LDI and MALDI methods. All stoichiometries were confirmed using isotopic pattern modelling.",
journal = "Hemijska industrija",
title = "Determination of isotopic distribution of lead by a matrix assisted laser desorption/ionization versus a laser desorption/ionization time of flight mass spectrometry",
volume = "71",
number = "1",
pages = "19-26",
doi = "10.2298/HEMIND151218013K"
}

Kamčeva, T. T., Nešić, M. D., Stoiljković, M., Popović, I. A., Miletić, J., Rajčić, B., Petković, M.,& Veličković, S.. (2017). Determination of isotopic distribution of lead by a matrix assisted laser desorption/ionization versus a laser desorption/ionization time of flight mass spectrometry. in Hemijska industrija, 71(1), 19-26.
https://doi.org/10.2298/HEMIND151218013K

Kamčeva TT, Nešić MD, Stoiljković M, Popović IA, Miletić J, Rajčić B, Petković M, Veličković S. Determination of isotopic distribution of lead by a matrix assisted laser desorption/ionization versus a laser desorption/ionization time of flight mass spectrometry. in Hemijska industrija. 2017;71(1):19-26.
doi:10.2298/HEMIND151218013K .

Kamčeva, Tina T., Nešić, Maja D., Stoiljković, Milovan, Popović, Iva A., Miletić, Jadranka, Rajčić, Boris, Petković, Marijana, Veličković, Suzana, "Determination of isotopic distribution of lead by a matrix assisted laser desorption/ionization versus a laser desorption/ionization time of flight mass spectrometry" in Hemijska industrija, 71, no. 1 (2017):19-26,
https://doi.org/10.2298/HEMIND151218013K . .

TY  - JOUR
AU  - Popović, Iva A.
AU  - Nešić, Maja D.
AU  - Vranješ, Mila
AU  - Šaponjić, Zoran
AU  - Petković, Marijana
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/886
AB  - In the present study, the possibility for the application of TiO2 nanocrystals of various shapes and sizes, for substrate-assisted laser desorption and ionization time-of-flight mass spectrometric (SALDI TOF MS) quantitative analysis of small molecules (steroid hormones, amino acids and saccharides) was investigated. Parameters, such as homogeneity of the substrate/analyte distribution, reproducibility of the measurements, within-day, and day-to-day repeatability, were determined. The homogeneity of different nanocrystal/analyte combinations on the target plate were compared based on the signal-to-noise values of several analyte signals. Obtained results show that all TiO2 nanocrystals, regardless of their shape, have great potential for the detection and determination of steroid hormones, amino acids and saccharides with good analytical parameters and detection limits. On the other hand, the reproducibility of the S/N ratio and detectability of the analytes recorded in various modes differ depending on the substrate. All examined molecules were detectable in negative ion mode with TiO2 NTs, in contrast to all other organic matrices and substrates, and the best reproducibility was obtained with the larger nanocrystals, TiO2 PNSs and TiO2 NTs, making them good candidates for the quantitative determination of small molecules.
T2  - RSC Advances
T1  - TiO2 nanocrystals - assisted laser desorption and ionization time-of-flight mass spectrometric analysis of steroid hormones, amino acids and saccharides. Validation and comparison of methods
VL  - 6
IS  - 2
SP  - 1027
EP  - 1036
DO  - 10.1039/c5ra20042c
ER  - 

@article{
author = "Popović, Iva A. and Nešić, Maja D. and Vranješ, Mila and Šaponjić, Zoran and Petković, Marijana",
year = "2016",
abstract = "In the present study, the possibility for the application of TiO2 nanocrystals of various shapes and sizes, for substrate-assisted laser desorption and ionization time-of-flight mass spectrometric (SALDI TOF MS) quantitative analysis of small molecules (steroid hormones, amino acids and saccharides) was investigated. Parameters, such as homogeneity of the substrate/analyte distribution, reproducibility of the measurements, within-day, and day-to-day repeatability, were determined. The homogeneity of different nanocrystal/analyte combinations on the target plate were compared based on the signal-to-noise values of several analyte signals. Obtained results show that all TiO2 nanocrystals, regardless of their shape, have great potential for the detection and determination of steroid hormones, amino acids and saccharides with good analytical parameters and detection limits. On the other hand, the reproducibility of the S/N ratio and detectability of the analytes recorded in various modes differ depending on the substrate. All examined molecules were detectable in negative ion mode with TiO2 NTs, in contrast to all other organic matrices and substrates, and the best reproducibility was obtained with the larger nanocrystals, TiO2 PNSs and TiO2 NTs, making them good candidates for the quantitative determination of small molecules.",
journal = "RSC Advances",
title = "TiO2 nanocrystals - assisted laser desorption and ionization time-of-flight mass spectrometric analysis of steroid hormones, amino acids and saccharides. Validation and comparison of methods",
volume = "6",
number = "2",
pages = "1027-1036",
doi = "10.1039/c5ra20042c"
}

Popović, I. A., Nešić, M. D., Vranješ, M., Šaponjić, Z.,& Petković, M.. (2016). TiO2 nanocrystals - assisted laser desorption and ionization time-of-flight mass spectrometric analysis of steroid hormones, amino acids and saccharides. Validation and comparison of methods. in RSC Advances, 6(2), 1027-1036.
https://doi.org/10.1039/c5ra20042c

Popović IA, Nešić MD, Vranješ M, Šaponjić Z, Petković M. TiO2 nanocrystals - assisted laser desorption and ionization time-of-flight mass spectrometric analysis of steroid hormones, amino acids and saccharides. Validation and comparison of methods. in RSC Advances. 2016;6(2):1027-1036.
doi:10.1039/c5ra20042c .

Popović, Iva A., Nešić, Maja D., Vranješ, Mila, Šaponjić, Zoran, Petković, Marijana, "TiO2 nanocrystals - assisted laser desorption and ionization time-of-flight mass spectrometric analysis of steroid hormones, amino acids and saccharides. Validation and comparison of methods" in RSC Advances, 6, no. 2 (2016):1027-1036,
https://doi.org/10.1039/c5ra20042c . .

TY  - JOUR
AU  - Popović, Iva A.
AU  - Milovanović, Dubravka S.
AU  - Miletić, Jadranka
AU  - Nešić, Maja D.
AU  - Vranješ, Mila
AU  - Šaponjić, Zoran
AU  - Petković, Marijana
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/902
AB  - Titanium dioxide is widely used substrate for laser desorption and ionization [(SA)LDI] mass spectrometry. As the semiconductor with high UV absorbance and rapid energy transfer to analytes, TiO2 provides soft and efficient desorption/ionization of analytes with relatively low degrees of fragmentation in the gas phase. TiO2 nanocrystals are convenient for small molecules (molecular mass LT 1000 Da) analysis due to low number of background signals. Desorption/ionization processes on TiO2 nanocrystals are related to the physical properties of the substrate, such as the ability to absorb and dissipate energy from the irradiating laser light source. In addition, size and shape of nanocrystals also affect these abilities. The aim of this study is to investigate the influence of shape and size dependant TiO2 nanocrystals/UV laser interaction on the quality of the mass spectra, detectability of analyzed molecules, intensities of the signals and homogeneity of co-crystals onto the MALDI plate, of carbohydrates. It is shown that the size and shape of nanocrystals influenced the way of packing carbohydrates onto plate, and thus affects homogeneity and reproducibility of mass spectrometry analysis.
PB  - Springer
T2  - Optical and Quantum Electronics
T1  - Dependence of the quality of SALDI TOF MS analysis on the TiO2 nanocrystals size and shape
VL  - 48
IS  - 2
DO  - 10.1007/s11082-016-0413-5
ER  - 

@article{
author = "Popović, Iva A. and Milovanović, Dubravka S. and Miletić, Jadranka and Nešić, Maja D. and Vranješ, Mila and Šaponjić, Zoran and Petković, Marijana",
year = "2016",
abstract = "Titanium dioxide is widely used substrate for laser desorption and ionization [(SA)LDI] mass spectrometry. As the semiconductor with high UV absorbance and rapid energy transfer to analytes, TiO2 provides soft and efficient desorption/ionization of analytes with relatively low degrees of fragmentation in the gas phase. TiO2 nanocrystals are convenient for small molecules (molecular mass LT 1000 Da) analysis due to low number of background signals. Desorption/ionization processes on TiO2 nanocrystals are related to the physical properties of the substrate, such as the ability to absorb and dissipate energy from the irradiating laser light source. In addition, size and shape of nanocrystals also affect these abilities. The aim of this study is to investigate the influence of shape and size dependant TiO2 nanocrystals/UV laser interaction on the quality of the mass spectra, detectability of analyzed molecules, intensities of the signals and homogeneity of co-crystals onto the MALDI plate, of carbohydrates. It is shown that the size and shape of nanocrystals influenced the way of packing carbohydrates onto plate, and thus affects homogeneity and reproducibility of mass spectrometry analysis.",
publisher = "Springer",
journal = "Optical and Quantum Electronics",
title = "Dependence of the quality of SALDI TOF MS analysis on the TiO2 nanocrystals size and shape",
volume = "48",
number = "2",
doi = "10.1007/s11082-016-0413-5"
}

Popović, I. A., Milovanović, D. S., Miletić, J., Nešić, M. D., Vranješ, M., Šaponjić, Z.,& Petković, M.. (2016). Dependence of the quality of SALDI TOF MS analysis on the TiO2 nanocrystals size and shape. in Optical and Quantum Electronics
Springer., 48(2).
https://doi.org/10.1007/s11082-016-0413-5

Popović IA, Milovanović DS, Miletić J, Nešić MD, Vranješ M, Šaponjić Z, Petković M. Dependence of the quality of SALDI TOF MS analysis on the TiO2 nanocrystals size and shape. in Optical and Quantum Electronics. 2016;48(2).
doi:10.1007/s11082-016-0413-5 .

Popović, Iva A., Milovanović, Dubravka S., Miletić, Jadranka, Nešić, Maja D., Vranješ, Mila, Šaponjić, Zoran, Petković, Marijana, "Dependence of the quality of SALDI TOF MS analysis on the TiO2 nanocrystals size and shape" in Optical and Quantum Electronics, 48, no. 2 (2016),
https://doi.org/10.1007/s11082-016-0413-5 . .

TY  - JOUR
AU  - Nešić, Maja
AU  - Popović, Iva A.
AU  - Leskovac, Andreja
AU  - Šaponjić, Zoran
AU  - Radoičić, Marija B.
AU  - Stepić, Milutin
AU  - Petković, Marijana
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/904
AB  - Photo-responsive drug release systems are promising for drug delivery applications due to many benefits compared to conventional chemotherapy such as targeted, controlled release of a drug and reduced toxicity to healthy tissues. In this work, we report synthesis of the nanocomposite system based on carrier TiO2 nanoparticles and potential anticancer ruthenium complex, with light controllable release properties. Nanocomposite system showed biological activity and induced the generation of free radicals, which are implied in the efficient cell killing. The drug release tests demonstrated sustained release of the transition metal complex from the surface implying the potency for the controlled drug delivery system. Taking into account photoactivity of the Ru-complex, in the next step we have investigated the influence of green light on the rate of the complex release, and the results showed dependence of the Ru-complex release from the surface of TiO2 nanoparticles on the applied laser energy. Therefore, these characteristics make this nanocomposite system promising for the photo-responsive chemotherapy.
PB  - Springer
T2  - Optical and Quantum Electronics
T1  - Testing the photo-sensitive nanocomposite system for potential controlled metallo-drug delivery
VL  - 48
IS  - 2
DO  - 10.1007/s11082-016-0421-5
ER  - 

@article{
author = "Nešić, Maja and Popović, Iva A. and Leskovac, Andreja and Šaponjić, Zoran and Radoičić, Marija B. and Stepić, Milutin and Petković, Marijana",
year = "2016",
abstract = "Photo-responsive drug release systems are promising for drug delivery applications due to many benefits compared to conventional chemotherapy such as targeted, controlled release of a drug and reduced toxicity to healthy tissues. In this work, we report synthesis of the nanocomposite system based on carrier TiO2 nanoparticles and potential anticancer ruthenium complex, with light controllable release properties. Nanocomposite system showed biological activity and induced the generation of free radicals, which are implied in the efficient cell killing. The drug release tests demonstrated sustained release of the transition metal complex from the surface implying the potency for the controlled drug delivery system. Taking into account photoactivity of the Ru-complex, in the next step we have investigated the influence of green light on the rate of the complex release, and the results showed dependence of the Ru-complex release from the surface of TiO2 nanoparticles on the applied laser energy. Therefore, these characteristics make this nanocomposite system promising for the photo-responsive chemotherapy.",
publisher = "Springer",
journal = "Optical and Quantum Electronics",
title = "Testing the photo-sensitive nanocomposite system for potential controlled metallo-drug delivery",
volume = "48",
number = "2",
doi = "10.1007/s11082-016-0421-5"
}

Nešić, M., Popović, I. A., Leskovac, A., Šaponjić, Z., Radoičić, M. B., Stepić, M.,& Petković, M.. (2016). Testing the photo-sensitive nanocomposite system for potential controlled metallo-drug delivery. in Optical and Quantum Electronics
Springer., 48(2).
https://doi.org/10.1007/s11082-016-0421-5

Nešić M, Popović IA, Leskovac A, Šaponjić Z, Radoičić MB, Stepić M, Petković M. Testing the photo-sensitive nanocomposite system for potential controlled metallo-drug delivery. in Optical and Quantum Electronics. 2016;48(2).
doi:10.1007/s11082-016-0421-5 .

Nešić, Maja, Popović, Iva A., Leskovac, Andreja, Šaponjić, Zoran, Radoičić, Marija B., Stepić, Milutin, Petković, Marijana, "Testing the photo-sensitive nanocomposite system for potential controlled metallo-drug delivery" in Optical and Quantum Electronics, 48, no. 2 (2016),
https://doi.org/10.1007/s11082-016-0421-5 . .

TY  - JOUR
AU  - Popović, Iva A.
AU  - Nešić, Maja D.
AU  - Vranješ, Mila
AU  - Šaponjić, Zoran
AU  - Petković, Marijana
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1267
AB  - Surface-assisted laser desorption/ionisation time-of-flight mass spectrometry (SALDI-TOF-MS) might be the method of choice for the analysis of low mass molecules (less than m/z 500). Titanium dioxide (TiO2) nanocrystals as a substrate for SALDI-TOF-MS improve the reproducibility of the signal intensities and prevent the fragmentation of some molecules upon laser irradiation, as we have previously shown. In addition, variously shaped and sized TiO2 nanocrystals/substrates for SALDI-MS could be used for quantification of small molecules, which are otherwise difficult to detect with the assistance of organic matrices. TiO2-assisted LDI-MS spectra could be acquired with excellent reproducibility and repeatability and with low detection limit. In the current study, we analysed the spectra of dexasone, citric acid, vitamin E and vitamin A acquired with TiO2 nanocrystals of various shapes and dimensions, i.e. the colloidal TiO2 nanoparticles (TiO2 NPs), TiO2 prolate nanospheroids (TiO2 PNSs) and TiO2 nanotubes (TiO2 NTs). Various shapes and dimensions of substrates were used since these factors determine desorption and ionisation processes. The homogeneity on the target plate was compared based on signal-to-noise values of peaks of interest of analysed molecules as well as the within-day and day-to-day repeatability. In summary, the obtained results show that the applicability of individual TiO2 nanocrystals depends on the analyte. Signals which are acquired with the assistance of TiO2 PNSs have the highest sensitivity and reproducibility (the smallest standard deviation), even compared with those in the LDI mode. This implies that TiO2 PNSs could also be suitable for quantitative analyses of small molecules.
T2  - Analytical and Bioanalytical Chemistry
T1  - SALDI-TOF-MS analyses of small molecules (citric acid, dexasone, vitamins E and A) using TiO2 nanocrystals as substrates
VL  - 408
IS  - 26
SP  - 7481
EP  - 7490
DO  - 10.1007/s00216-016-9846-8
ER  - 

@article{
author = "Popović, Iva A. and Nešić, Maja D. and Vranješ, Mila and Šaponjić, Zoran and Petković, Marijana",
year = "2016",
abstract = "Surface-assisted laser desorption/ionisation time-of-flight mass spectrometry (SALDI-TOF-MS) might be the method of choice for the analysis of low mass molecules (less than m/z 500). Titanium dioxide (TiO2) nanocrystals as a substrate for SALDI-TOF-MS improve the reproducibility of the signal intensities and prevent the fragmentation of some molecules upon laser irradiation, as we have previously shown. In addition, variously shaped and sized TiO2 nanocrystals/substrates for SALDI-MS could be used for quantification of small molecules, which are otherwise difficult to detect with the assistance of organic matrices. TiO2-assisted LDI-MS spectra could be acquired with excellent reproducibility and repeatability and with low detection limit. In the current study, we analysed the spectra of dexasone, citric acid, vitamin E and vitamin A acquired with TiO2 nanocrystals of various shapes and dimensions, i.e. the colloidal TiO2 nanoparticles (TiO2 NPs), TiO2 prolate nanospheroids (TiO2 PNSs) and TiO2 nanotubes (TiO2 NTs). Various shapes and dimensions of substrates were used since these factors determine desorption and ionisation processes. The homogeneity on the target plate was compared based on signal-to-noise values of peaks of interest of analysed molecules as well as the within-day and day-to-day repeatability. In summary, the obtained results show that the applicability of individual TiO2 nanocrystals depends on the analyte. Signals which are acquired with the assistance of TiO2 PNSs have the highest sensitivity and reproducibility (the smallest standard deviation), even compared with those in the LDI mode. This implies that TiO2 PNSs could also be suitable for quantitative analyses of small molecules.",
journal = "Analytical and Bioanalytical Chemistry",
title = "SALDI-TOF-MS analyses of small molecules (citric acid, dexasone, vitamins E and A) using TiO2 nanocrystals as substrates",
volume = "408",
number = "26",
pages = "7481-7490",
doi = "10.1007/s00216-016-9846-8"
}

Popović, I. A., Nešić, M. D., Vranješ, M., Šaponjić, Z.,& Petković, M.. (2016). SALDI-TOF-MS analyses of small molecules (citric acid, dexasone, vitamins E and A) using TiO2 nanocrystals as substrates. in Analytical and Bioanalytical Chemistry, 408(26), 7481-7490.
https://doi.org/10.1007/s00216-016-9846-8

Popović IA, Nešić MD, Vranješ M, Šaponjić Z, Petković M. SALDI-TOF-MS analyses of small molecules (citric acid, dexasone, vitamins E and A) using TiO2 nanocrystals as substrates. in Analytical and Bioanalytical Chemistry. 2016;408(26):7481-7490.
doi:10.1007/s00216-016-9846-8 .

Popović, Iva A., Nešić, Maja D., Vranješ, Mila, Šaponjić, Zoran, Petković, Marijana, "SALDI-TOF-MS analyses of small molecules (citric acid, dexasone, vitamins E and A) using TiO2 nanocrystals as substrates" in Analytical and Bioanalytical Chemistry, 408, no. 26 (2016):7481-7490,
https://doi.org/10.1007/s00216-016-9846-8 . .

TY  - JOUR
AU  - Nešić, Maja D.
AU  - Popović, Iva A.
AU  - Leskovac, Andreja
AU  - Petković, Marijana
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1271
AB  - Ruthenium compounds are highly regarded as metallo-drug candidates. Many studies have focused their attention on the interaction between ruthenium complexes with their possible biological targets. The interaction of ruthenium complexes with transport proteins, enzymes and peptides is of great importance for understanding their biodistribution and mechanism of action, therefore, the development of an anti-cancer therapy involving ruthenium complexes has recently shifted from DNA targeting towards protein targeting. With the aim of gaining insight into possible interactions between ruthenium complexes with biologically relevant proteins, we have studied the interaction of cis-dichlorobis(2,2-bipyridyl-4,4-dicarboxylic acid)ruthenium(II) complex [Ru(II)(dcbpy)(2)Cl-2], which previously showed good potency in photo-dynamic chemotherapy, with bovine serum albumin (BSA), phospholipase A(2) (PLA(2)) and glutathione (GSH). Binding constants and possible number of binding sites to mentioned proteins and peptide are investigated by ultraviolet-visible spectroscopy and Matrix-Assisted Laser Desorption Ionization Mass Spectrometry (MALDI TOF MS). The complex binding affinities were in the following order: PLA(2) GT BSA GT GSH. Moreover, genotoxic profile of the complex, tested on peripheral blood lymphocytes as a model system, was also promising.
T2  - Biometals
T1  - Biological activity and binding properties of [Ru(II)(dcbpy)(2)Cl-2] complex to bovine serum albumin, phospholipase A(2) and glutathione
VL  - 29
IS  - 5
SP  - 921
EP  - 933
DO  - 10.1007/s10534-016-9964-y
ER  - 

@article{
author = "Nešić, Maja D. and Popović, Iva A. and Leskovac, Andreja and Petković, Marijana",
year = "2016",
abstract = "Ruthenium compounds are highly regarded as metallo-drug candidates. Many studies have focused their attention on the interaction between ruthenium complexes with their possible biological targets. The interaction of ruthenium complexes with transport proteins, enzymes and peptides is of great importance for understanding their biodistribution and mechanism of action, therefore, the development of an anti-cancer therapy involving ruthenium complexes has recently shifted from DNA targeting towards protein targeting. With the aim of gaining insight into possible interactions between ruthenium complexes with biologically relevant proteins, we have studied the interaction of cis-dichlorobis(2,2-bipyridyl-4,4-dicarboxylic acid)ruthenium(II) complex [Ru(II)(dcbpy)(2)Cl-2], which previously showed good potency in photo-dynamic chemotherapy, with bovine serum albumin (BSA), phospholipase A(2) (PLA(2)) and glutathione (GSH). Binding constants and possible number of binding sites to mentioned proteins and peptide are investigated by ultraviolet-visible spectroscopy and Matrix-Assisted Laser Desorption Ionization Mass Spectrometry (MALDI TOF MS). The complex binding affinities were in the following order: PLA(2) GT BSA GT GSH. Moreover, genotoxic profile of the complex, tested on peripheral blood lymphocytes as a model system, was also promising.",
journal = "Biometals",
title = "Biological activity and binding properties of [Ru(II)(dcbpy)(2)Cl-2] complex to bovine serum albumin, phospholipase A(2) and glutathione",
volume = "29",
number = "5",
pages = "921-933",
doi = "10.1007/s10534-016-9964-y"
}

Nešić, M. D., Popović, I. A., Leskovac, A.,& Petković, M.. (2016). Biological activity and binding properties of [Ru(II)(dcbpy)(2)Cl-2] complex to bovine serum albumin, phospholipase A(2) and glutathione. in Biometals, 29(5), 921-933.
https://doi.org/10.1007/s10534-016-9964-y

Nešić MD, Popović IA, Leskovac A, Petković M. Biological activity and binding properties of [Ru(II)(dcbpy)(2)Cl-2] complex to bovine serum albumin, phospholipase A(2) and glutathione. in Biometals. 2016;29(5):921-933.
doi:10.1007/s10534-016-9964-y .

Nešić, Maja D., Popović, Iva A., Leskovac, Andreja, Petković, Marijana, "Biological activity and binding properties of [Ru(II)(dcbpy)(2)Cl-2] complex to bovine serum albumin, phospholipase A(2) and glutathione" in Biometals, 29, no. 5 (2016):921-933,
https://doi.org/10.1007/s10534-016-9964-y . .

TY  - JOUR
AU  - Popović, Iva A.
AU  - Nešić, Maja D.
AU  - Nišavić, Marija
AU  - Vranješ, Mila
AU  - Radetić, Tamara
AU  - Šaponjić, Zoran
AU  - Masnikosa, Romana
AU  - Petković, Marijana
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/544
AB  - Nanostructured materials as substrates for surface-assisted laser desorption and ionization time-of-flight mass spectrometry have two main advantages such as small number of signals in the low mass range and salt tolerance. We have also previously observed decreased extent of undesired fragmentation of bipyridine-containing transition metal complexes in the presence of TiO2 nanoparticles (NPs). In this work, we extended our previous study and tested whether both TiO2 NPs and TiO2 prolate nanospheroids (PNSs) can be used as substrates for SALDI-MS of bipyridine-containing transition metal complexes and whether they tolerate intense laser and the presence of inorganic salts. TiO2 NPs (an average diameter of 5 nm) and PNSs (length: 40-50 nm, the lateral dimension: 14-16 nm) were characterized microscopically and their mass spectra were analyzed, as well as the spectra of bipyridine-containing Pt(II) and Ru(III) complexes. Our results show that seven times higher analyte signals can be obtained in the presence of PNSs compared to the signals acquired with NPs and three times higher compared to spectra acquired without a substrate. The presence of inorganic salt did not affect the spectra, which makes both TiO2 nanocrystals suitable for MS analysis of transition metal complexes in biological fluids. (C) 2015 Elsevier B.V. All rights reserved.
T2  - Materials Letters
T1  - Suitability of TiO2 nanoparticles and prolate nanospheroids for laser desorption/ionization mass spectrometric characterization of bipyridine-containing complexes
VL  - 150
SP  - 84
EP  - 88
DO  - 10.1016/j.matlet.2015.03.004
ER  - 

@article{
author = "Popović, Iva A. and Nešić, Maja D. and Nišavić, Marija and Vranješ, Mila and Radetić, Tamara and Šaponjić, Zoran and Masnikosa, Romana and Petković, Marijana",
year = "2015",
abstract = "Nanostructured materials as substrates for surface-assisted laser desorption and ionization time-of-flight mass spectrometry have two main advantages such as small number of signals in the low mass range and salt tolerance. We have also previously observed decreased extent of undesired fragmentation of bipyridine-containing transition metal complexes in the presence of TiO2 nanoparticles (NPs). In this work, we extended our previous study and tested whether both TiO2 NPs and TiO2 prolate nanospheroids (PNSs) can be used as substrates for SALDI-MS of bipyridine-containing transition metal complexes and whether they tolerate intense laser and the presence of inorganic salts. TiO2 NPs (an average diameter of 5 nm) and PNSs (length: 40-50 nm, the lateral dimension: 14-16 nm) were characterized microscopically and their mass spectra were analyzed, as well as the spectra of bipyridine-containing Pt(II) and Ru(III) complexes. Our results show that seven times higher analyte signals can be obtained in the presence of PNSs compared to the signals acquired with NPs and three times higher compared to spectra acquired without a substrate. The presence of inorganic salt did not affect the spectra, which makes both TiO2 nanocrystals suitable for MS analysis of transition metal complexes in biological fluids. (C) 2015 Elsevier B.V. All rights reserved.",
journal = "Materials Letters",
title = "Suitability of TiO2 nanoparticles and prolate nanospheroids for laser desorption/ionization mass spectrometric characterization of bipyridine-containing complexes",
volume = "150",
pages = "84-88",
doi = "10.1016/j.matlet.2015.03.004"
}

Popović, I. A., Nešić, M. D., Nišavić, M., Vranješ, M., Radetić, T., Šaponjić, Z., Masnikosa, R.,& Petković, M.. (2015). Suitability of TiO2 nanoparticles and prolate nanospheroids for laser desorption/ionization mass spectrometric characterization of bipyridine-containing complexes. in Materials Letters, 150, 84-88.
https://doi.org/10.1016/j.matlet.2015.03.004

Popović IA, Nešić MD, Nišavić M, Vranješ M, Radetić T, Šaponjić Z, Masnikosa R, Petković M. Suitability of TiO2 nanoparticles and prolate nanospheroids for laser desorption/ionization mass spectrometric characterization of bipyridine-containing complexes. in Materials Letters. 2015;150:84-88.
doi:10.1016/j.matlet.2015.03.004 .

Popović, Iva A., Nešić, Maja D., Nišavić, Marija, Vranješ, Mila, Radetić, Tamara, Šaponjić, Zoran, Masnikosa, Romana, Petković, Marijana, "Suitability of TiO2 nanoparticles and prolate nanospheroids for laser desorption/ionization mass spectrometric characterization of bipyridine-containing complexes" in Materials Letters, 150 (2015):84-88,
https://doi.org/10.1016/j.matlet.2015.03.004 . .