TY  - JOUR
AU  - Petronijević, Jelena
AU  - Joksimović, Nenad
AU  - Milović, Emilija
AU  - Đorđić Crnogorac, Marija
AU  - Petrović, Nina
AU  - Stanojković, Tatjana P.
AU  - Milivojević, Dušan
AU  - Janković, Nenad
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9933
AB  - In order to discover new therapeutically active agents a series of novel copper(II) complexes with 3,4-dihydro-2(1H)-quinoxalinones were synthesized. All complexes were characterized by IR and EPR spectroscopic techniques and examined for their cytotoxic effect on human cancer cell lines HeLa, LS174, A549 and normal fibroblasts (MRC-5). For further examination of the cytotoxic mechanisms of novel complexes, three of them were chosen for analysing their effects on the distribution of HeLa cells in the cell cycle phases. The results of the flow cytometry analysis suggest that tested complexes lead to time-dependent accumulation of the cells in S and G2/M phases. The strongest accumulation effect showed complex 2d after 48 h of incubation. Competitive experiments with ethidium bromide (EB) indicated that tested compound 2d have affinity to displace EB from the EB-DNA complex through intercalation. Also, the binding parameters values for 2d-BSA complex showed that a reversible 2d-BSA complex is formed and ligand 2d can be stored and carried by BSA.
T2  - Chemico-Biological Interactions
T1  - Antitumor activity, DNA and BSA interactions of novel copper(II) complexes with 3,4-dihydro-2(1H)-quinoxalinones
VL  - 348
SP  - 109647
DO  - 10.1016/j.cbi.2021.109647
ER  - 

@article{
author = "Petronijević, Jelena and Joksimović, Nenad and Milović, Emilija and Đorđić Crnogorac, Marija and Petrović, Nina and Stanojković, Tatjana P. and Milivojević, Dušan and Janković, Nenad",
year = "2021",
abstract = "In order to discover new therapeutically active agents a series of novel copper(II) complexes with 3,4-dihydro-2(1H)-quinoxalinones were synthesized. All complexes were characterized by IR and EPR spectroscopic techniques and examined for their cytotoxic effect on human cancer cell lines HeLa, LS174, A549 and normal fibroblasts (MRC-5). For further examination of the cytotoxic mechanisms of novel complexes, three of them were chosen for analysing their effects on the distribution of HeLa cells in the cell cycle phases. The results of the flow cytometry analysis suggest that tested complexes lead to time-dependent accumulation of the cells in S and G2/M phases. The strongest accumulation effect showed complex 2d after 48 h of incubation. Competitive experiments with ethidium bromide (EB) indicated that tested compound 2d have affinity to displace EB from the EB-DNA complex through intercalation. Also, the binding parameters values for 2d-BSA complex showed that a reversible 2d-BSA complex is formed and ligand 2d can be stored and carried by BSA.",
journal = "Chemico-Biological Interactions",
title = "Antitumor activity, DNA and BSA interactions of novel copper(II) complexes with 3,4-dihydro-2(1H)-quinoxalinones",
volume = "348",
pages = "109647",
doi = "10.1016/j.cbi.2021.109647"
}

Petronijević, J., Joksimović, N., Milović, E., Đorđić Crnogorac, M., Petrović, N., Stanojković, T. P., Milivojević, D.,& Janković, N.. (2021). Antitumor activity, DNA and BSA interactions of novel copper(II) complexes with 3,4-dihydro-2(1H)-quinoxalinones. in Chemico-Biological Interactions, 348, 109647.
https://doi.org/10.1016/j.cbi.2021.109647

Petronijević J, Joksimović N, Milović E, Đorđić Crnogorac M, Petrović N, Stanojković TP, Milivojević D, Janković N. Antitumor activity, DNA and BSA interactions of novel copper(II) complexes with 3,4-dihydro-2(1H)-quinoxalinones. in Chemico-Biological Interactions. 2021;348:109647.
doi:10.1016/j.cbi.2021.109647 .

Petronijević, Jelena, Joksimović, Nenad, Milović, Emilija, Đorđić Crnogorac, Marija, Petrović, Nina, Stanojković, Tatjana P., Milivojević, Dušan, Janković, Nenad, "Antitumor activity, DNA and BSA interactions of novel copper(II) complexes with 3,4-dihydro-2(1H)-quinoxalinones" in Chemico-Biological Interactions, 348 (2021):109647,
https://doi.org/10.1016/j.cbi.2021.109647 . .

TY  - JOUR
AU  - Matić, Ivana Z.
AU  - Ergün, Sercan
AU  - Đorđić Crnogorac, Marija
AU  - Misir, Sema
AU  - Aliyazicioğlu, Yüksel
AU  - Damjanović, Ana
AU  - Džudžević-Čančar, Hurija
AU  - Stanojković, Tatjana P.
AU  - Konanç, Kalbiye
AU  - Petrović, Nina
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9406
AB  - Six extracts were obtained from plant species Hypericum perforatum L., collected at Samsun in Turkey. The aim of this study was to examine the mechanisms of the anticancer activity of these extracts. Methanol, ethyl-acetate and hexane were used as a solvents for extraction from both branch-body part of the plant (extracts 1, 2 and 3) and from plant flowers (extracts 4, 5 and 6). The cytotoxic effects of the extracts were determined against 2D and 3D cancer cell models. Cell cycle changes of treated HeLa cells were analyzed by flow cytometry. Measurements of gene and microRNA expression levels in treated HeLa cells were done by quantitative real time PCR. Five examined extracts (2–6) exerted selective concentration-dependent cytotoxic effects on HeLa, K562, and A549 cancer cells, while the extract 1 exhibited very weak cytotoxicity. The extract 6 showed the highest intensity of cytotoxic activity. All tested extracts (2–6) demonstrated the ability to induce apoptosis in HeLa cells through activation of caspase-3. These extracts remarkably decreased gene expression levels of MMP2, MMP9, TIMP3, and VEGFA in HeLa cells. Flower extracts might have stronger effects on miR128/193a-5p/335 level changes than branch-body extracts. Hypericum perforatum extracts exerted weaker cytotoxic effects on 3D HeLa spheroids when compared with their effects on 2D monolayer HeLa cells. Taken together, results of our research may suggest the promising anticancer properties of the Hypericum perforatum extracts. © 2021, The Author(s), under exclusive licence to Springer Nature B.V.
T2  - Cytotechnology
T1  - Cytotoxic activities of Hypericum perforatum L. extracts against 2D and 3D cancer cell models
VL  - 73
IS  - 3
SP  - 373
EP  - 389
DO  - 10.1007/s10616-021-00464-5
ER  - 

@article{
author = "Matić, Ivana Z. and Ergün, Sercan and Đorđić Crnogorac, Marija and Misir, Sema and Aliyazicioğlu, Yüksel and Damjanović, Ana and Džudžević-Čančar, Hurija and Stanojković, Tatjana P. and Konanç, Kalbiye and Petrović, Nina",
year = "2021",
abstract = "Six extracts were obtained from plant species Hypericum perforatum L., collected at Samsun in Turkey. The aim of this study was to examine the mechanisms of the anticancer activity of these extracts. Methanol, ethyl-acetate and hexane were used as a solvents for extraction from both branch-body part of the plant (extracts 1, 2 and 3) and from plant flowers (extracts 4, 5 and 6). The cytotoxic effects of the extracts were determined against 2D and 3D cancer cell models. Cell cycle changes of treated HeLa cells were analyzed by flow cytometry. Measurements of gene and microRNA expression levels in treated HeLa cells were done by quantitative real time PCR. Five examined extracts (2–6) exerted selective concentration-dependent cytotoxic effects on HeLa, K562, and A549 cancer cells, while the extract 1 exhibited very weak cytotoxicity. The extract 6 showed the highest intensity of cytotoxic activity. All tested extracts (2–6) demonstrated the ability to induce apoptosis in HeLa cells through activation of caspase-3. These extracts remarkably decreased gene expression levels of MMP2, MMP9, TIMP3, and VEGFA in HeLa cells. Flower extracts might have stronger effects on miR128/193a-5p/335 level changes than branch-body extracts. Hypericum perforatum extracts exerted weaker cytotoxic effects on 3D HeLa spheroids when compared with their effects on 2D monolayer HeLa cells. Taken together, results of our research may suggest the promising anticancer properties of the Hypericum perforatum extracts. © 2021, The Author(s), under exclusive licence to Springer Nature B.V.",
journal = "Cytotechnology",
title = "Cytotoxic activities of Hypericum perforatum L. extracts against 2D and 3D cancer cell models",
volume = "73",
number = "3",
pages = "373-389",
doi = "10.1007/s10616-021-00464-5"
}

Matić, I. Z., Ergün, S., Đorđić Crnogorac, M., Misir, S., Aliyazicioğlu, Y., Damjanović, A., Džudžević-Čančar, H., Stanojković, T. P., Konanç, K.,& Petrović, N.. (2021). Cytotoxic activities of Hypericum perforatum L. extracts against 2D and 3D cancer cell models. in Cytotechnology, 73(3), 373-389.
https://doi.org/10.1007/s10616-021-00464-5

Matić IZ, Ergün S, Đorđić Crnogorac M, Misir S, Aliyazicioğlu Y, Damjanović A, Džudžević-Čančar H, Stanojković TP, Konanç K, Petrović N. Cytotoxic activities of Hypericum perforatum L. extracts against 2D and 3D cancer cell models. in Cytotechnology. 2021;73(3):373-389.
doi:10.1007/s10616-021-00464-5 .

Matić, Ivana Z., Ergün, Sercan, Đorđić Crnogorac, Marija, Misir, Sema, Aliyazicioğlu, Yüksel, Damjanović, Ana, Džudžević-Čančar, Hurija, Stanojković, Tatjana P., Konanç, Kalbiye, Petrović, Nina, "Cytotoxic activities of Hypericum perforatum L. extracts against 2D and 3D cancer cell models" in Cytotechnology, 73, no. 3 (2021):373-389,
https://doi.org/10.1007/s10616-021-00464-5 . .

TY  - JOUR
AU  - Stanojković, Tatjana P.
AU  - Matić, Ivana Z.
AU  - Petrović, Nina
AU  - Stanković, Vesna
AU  - Kopčalić, Katarina
AU  - Besu, Irina
AU  - Đorđić Crnogorac, Marija
AU  - Mališić, Emina
AU  - Mirjačić-Martinović, Katarina
AU  - Vuletić, Ana
AU  - Bukumirić, Zoran
AU  - Žižak, Željko
AU  - Veldwijk, Marlon
AU  - Herskind, Carsten
AU  - Nikitović, Marina
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9713
AB  - One of the challenges of radiation oncology in the era of personalized medicine is identification of biomarkers associated with individual radiosensitivity. The aim of research was to evaluate the possible clinical value of the associations between clinical, physical, and biological factors, and risk for development of acute radiotoxicity in patients with prostate cancer. The study involved forty four patients treated with three-dimensional conformal radiotherapy. The concentrations of IL-1β, IL-2, IL-6, IFN-γ and TGF-β1 were assessed before radiotherapy, after 5th, 15th and 25th radiotherapy fractions, at the end, and 1 month after the end of radiotherapy. Cytokine gene expression was determined in peripheral blood mononuclear cells. The univariate analysis of circulating cytokine levels during radiotherapy showed that increased serum concentrations of IL-6 were significantly associated with higher grade of acute genitourinary toxicity. The multivariate analysis demonstrated that increased level of IL-6 during the radiotherapy was significantly associated with higher grade of acute genitourinary toxicity across treatment. TGF-β expression levels significantly decreased during course of radiotherapy. Research indicates that changes in circulating cytokine levels might be important parameter of radiotoxicity in patients with prostate cancer. These findings suggest that future studies based on multi-parameter examination are necessary for prediction of individual radiosensitivity.
T2  - Scientific Reports
T1  - Evaluation of cytokine expression and circulating immune cell subsets as potential parameters of acute radiation toxicity in prostate cancer patients
VL  - 10
IS  - 1
SP  - 19002
DO  - 10.1038/s41598-020-75812-0
ER  - 

@article{
author = "Stanojković, Tatjana P. and Matić, Ivana Z. and Petrović, Nina and Stanković, Vesna and Kopčalić, Katarina and Besu, Irina and Đorđić Crnogorac, Marija and Mališić, Emina and Mirjačić-Martinović, Katarina and Vuletić, Ana and Bukumirić, Zoran and Žižak, Željko and Veldwijk, Marlon and Herskind, Carsten and Nikitović, Marina",
year = "2020",
abstract = "One of the challenges of radiation oncology in the era of personalized medicine is identification of biomarkers associated with individual radiosensitivity. The aim of research was to evaluate the possible clinical value of the associations between clinical, physical, and biological factors, and risk for development of acute radiotoxicity in patients with prostate cancer. The study involved forty four patients treated with three-dimensional conformal radiotherapy. The concentrations of IL-1β, IL-2, IL-6, IFN-γ and TGF-β1 were assessed before radiotherapy, after 5th, 15th and 25th radiotherapy fractions, at the end, and 1 month after the end of radiotherapy. Cytokine gene expression was determined in peripheral blood mononuclear cells. The univariate analysis of circulating cytokine levels during radiotherapy showed that increased serum concentrations of IL-6 were significantly associated with higher grade of acute genitourinary toxicity. The multivariate analysis demonstrated that increased level of IL-6 during the radiotherapy was significantly associated with higher grade of acute genitourinary toxicity across treatment. TGF-β expression levels significantly decreased during course of radiotherapy. Research indicates that changes in circulating cytokine levels might be important parameter of radiotoxicity in patients with prostate cancer. These findings suggest that future studies based on multi-parameter examination are necessary for prediction of individual radiosensitivity.",
journal = "Scientific Reports",
title = "Evaluation of cytokine expression and circulating immune cell subsets as potential parameters of acute radiation toxicity in prostate cancer patients",
volume = "10",
number = "1",
pages = "19002",
doi = "10.1038/s41598-020-75812-0"
}

Stanojković, T. P., Matić, I. Z., Petrović, N., Stanković, V., Kopčalić, K., Besu, I., Đorđić Crnogorac, M., Mališić, E., Mirjačić-Martinović, K., Vuletić, A., Bukumirić, Z., Žižak, Ž., Veldwijk, M., Herskind, C.,& Nikitović, M.. (2020). Evaluation of cytokine expression and circulating immune cell subsets as potential parameters of acute radiation toxicity in prostate cancer patients. in Scientific Reports, 10(1), 19002.
https://doi.org/10.1038/s41598-020-75812-0

Stanojković TP, Matić IZ, Petrović N, Stanković V, Kopčalić K, Besu I, Đorđić Crnogorac M, Mališić E, Mirjačić-Martinović K, Vuletić A, Bukumirić Z, Žižak Ž, Veldwijk M, Herskind C, Nikitović M. Evaluation of cytokine expression and circulating immune cell subsets as potential parameters of acute radiation toxicity in prostate cancer patients. in Scientific Reports. 2020;10(1):19002.
doi:10.1038/s41598-020-75812-0 .

Stanojković, Tatjana P., Matić, Ivana Z., Petrović, Nina, Stanković, Vesna, Kopčalić, Katarina, Besu, Irina, Đorđić Crnogorac, Marija, Mališić, Emina, Mirjačić-Martinović, Katarina, Vuletić, Ana, Bukumirić, Zoran, Žižak, Željko, Veldwijk, Marlon, Herskind, Carsten, Nikitović, Marina, "Evaluation of cytokine expression and circulating immune cell subsets as potential parameters of acute radiation toxicity in prostate cancer patients" in Scientific Reports, 10, no. 1 (2020):19002,
https://doi.org/10.1038/s41598-020-75812-0 . .

TY  - JOUR
AU  - Janković, Nenad Ž.
AU  - Trifunović Ristovski, Jovana
AU  - Vraneš, Milan
AU  - Tot, Aleksandar
AU  - Petronijević, Jelena
AU  - Joksimović, Nenad
AU  - Stanojković, Tatjana P.
AU  - Đorđić Crnogorac, Marija
AU  - Petrović, Nina
AU  - Boljević, Ivana
AU  - Matić, Ivana Z.
AU  - Bogdanović, Goran A.
AU  - Mikov, Momir
AU  - Bugarčić, Zorica M.
PY  - 2019
UR  - https://linkinghub.elsevier.com/retrieve/pii/S0045206818312598
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8071
AB  - In order to investigate potential therapeutically agents, novel products of Biginelli reaction (4a-l) were synthesized and exposed to cytotoxic and caspase activities, angiogenesis, cell cycle distribution, gene and microRNA expression levels, lipophilicity assessment and docking study. Among the twelve novel compounds (4a-l) evaluated for the cytotoxic activity, five of them (4c, 4d, 4f, 4k and 4l) that showed excellent activity on the tested cell lines (HeLa, LS174 and A549) were selected for further evaluation. Interestingly, compound 4f has up to three times higher selectivity index (SI) towards cancer cells than cisplatin (on HeLa, LS174 and A549 SI = 18.2, 13.5 and 11.2, respectively). The obtained results from cell cycle distribution and caspase activity indicate that tested compounds (4c, 4d, 4f, 4k and 4l) promoted caspase-9 activation, implicated in the intrinsic pathway of apoptosis. Lipophilicity of 4a-l was determinate by using reversed-phase high-performance liquid chromatography. © 2019 Elsevier Inc.
T2  - Bioorganic Chemistry
T1  - Discovery of the Biginelli hybrids as novel caspase-9 activators in apoptotic machines: Lipophilicity, molecular docking study, influence on angiogenesis gene and miR-21 expression levels
VL  - 86
SP  - 569
EP  - 582
DO  - 10.1016/j.bioorg.2019.02.026
ER  - 

@article{
author = "Janković, Nenad Ž. and Trifunović Ristovski, Jovana and Vraneš, Milan and Tot, Aleksandar and Petronijević, Jelena and Joksimović, Nenad and Stanojković, Tatjana P. and Đorđić Crnogorac, Marija and Petrović, Nina and Boljević, Ivana and Matić, Ivana Z. and Bogdanović, Goran A. and Mikov, Momir and Bugarčić, Zorica M.",
year = "2019",
abstract = "In order to investigate potential therapeutically agents, novel products of Biginelli reaction (4a-l) were synthesized and exposed to cytotoxic and caspase activities, angiogenesis, cell cycle distribution, gene and microRNA expression levels, lipophilicity assessment and docking study. Among the twelve novel compounds (4a-l) evaluated for the cytotoxic activity, five of them (4c, 4d, 4f, 4k and 4l) that showed excellent activity on the tested cell lines (HeLa, LS174 and A549) were selected for further evaluation. Interestingly, compound 4f has up to three times higher selectivity index (SI) towards cancer cells than cisplatin (on HeLa, LS174 and A549 SI = 18.2, 13.5 and 11.2, respectively). The obtained results from cell cycle distribution and caspase activity indicate that tested compounds (4c, 4d, 4f, 4k and 4l) promoted caspase-9 activation, implicated in the intrinsic pathway of apoptosis. Lipophilicity of 4a-l was determinate by using reversed-phase high-performance liquid chromatography. © 2019 Elsevier Inc.",
journal = "Bioorganic Chemistry",
title = "Discovery of the Biginelli hybrids as novel caspase-9 activators in apoptotic machines: Lipophilicity, molecular docking study, influence on angiogenesis gene and miR-21 expression levels",
volume = "86",
pages = "569-582",
doi = "10.1016/j.bioorg.2019.02.026"
}

Janković, N. Ž., Trifunović Ristovski, J., Vraneš, M., Tot, A., Petronijević, J., Joksimović, N., Stanojković, T. P., Đorđić Crnogorac, M., Petrović, N., Boljević, I., Matić, I. Z., Bogdanović, G. A., Mikov, M.,& Bugarčić, Z. M.. (2019). Discovery of the Biginelli hybrids as novel caspase-9 activators in apoptotic machines: Lipophilicity, molecular docking study, influence on angiogenesis gene and miR-21 expression levels. in Bioorganic Chemistry, 86, 569-582.
https://doi.org/10.1016/j.bioorg.2019.02.026

Janković NŽ, Trifunović Ristovski J, Vraneš M, Tot A, Petronijević J, Joksimović N, Stanojković TP, Đorđić Crnogorac M, Petrović N, Boljević I, Matić IZ, Bogdanović GA, Mikov M, Bugarčić ZM. Discovery of the Biginelli hybrids as novel caspase-9 activators in apoptotic machines: Lipophilicity, molecular docking study, influence on angiogenesis gene and miR-21 expression levels. in Bioorganic Chemistry. 2019;86:569-582.
doi:10.1016/j.bioorg.2019.02.026 .

Janković, Nenad Ž., Trifunović Ristovski, Jovana, Vraneš, Milan, Tot, Aleksandar, Petronijević, Jelena, Joksimović, Nenad, Stanojković, Tatjana P., Đorđić Crnogorac, Marija, Petrović, Nina, Boljević, Ivana, Matić, Ivana Z., Bogdanović, Goran A., Mikov, Momir, Bugarčić, Zorica M., "Discovery of the Biginelli hybrids as novel caspase-9 activators in apoptotic machines: Lipophilicity, molecular docking study, influence on angiogenesis gene and miR-21 expression levels" in Bioorganic Chemistry, 86 (2019):569-582,
https://doi.org/10.1016/j.bioorg.2019.02.026 . .