TY  - JOUR
AU  - Isca, Vera M. S.
AU  - Senćanski, Milan V.
AU  - Filipović, Nenad R.
AU  - Dos Santos, Daniel J. V. A.
AU  - Čipak Gašparović, Ana
AU  - Saraiva, Lucilia
AU  - Afonso, Carlos A M
AU  - Rijo, Patrícia
AU  - Garcia-Sosa, Alfonso T
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9017
AB  - Plants have been used for centuries to treat several illnesses. The Plectranthus genus has a vast variety of species that has allowed the isolation of cytotoxic compounds with notable activities. The abietane diterpenes 6,7-dehydroroyleanone (DeRoy, 1), 7α-acetoxy-6β-hydroxyroyleanone (Roy, 2), and Parvifloron D (ParvD, 3) were obtained from Plectranthus spp. and showed promising biological activities, such as cytotoxicity. The inhibitory effects of the different natural abietanes (1-3) were compared in MFC7, SkBr3, and SUM159 cell lines, as well as SUM159 grown in cancer stem cell-inducing conditions. Based on the royleanones’ bioactivity, the derivatives RoyBz (4), RoyBzCl (5), RoyPr2 (6), and DihydroxyRoy (7), previously obtained from 2, were selected for further studies. Protein kinases C (PKCs) are involved in several carcinogenic processes. Thus, PKCs are potential targets for cancer therapy. To date, the portfolio of available PKC modulators remains very limited due to the difficulty of designing isozyme-selective PKC modulators. As such, molecular docking was used to evaluate royleanones 1-6 as predicted isozyme-selective PKC binders. Subtle changes in the binding site of each PKC isoform change the predicted interaction profiles of the ligands. Subtle changes in royleanone substitution patterns, such as a double substitution only with non-substituted phenyls, or hydroxybenzoate at position four that flips the binding mode of ParvD (3), can increase the predicted interactions in certain PKC subtypes.
AB  - Plants have been used for centuries to treat several illnesses. The Plectranthus genus has a vast variety of species that has allowed the isolation of cytotoxic compounds with notable activities. The abietane diterpenes 6,7-dehydroroyleanone (DeRoy, 1), 7α-acetoxy-6β-hydroxyroyleanone (Roy, 2), and Parvifloron D (ParvD, 3) were obtained from Plectranthus spp. and showed promising biological activities, such as cytotoxicity. The inhibitory effects of the different natural abietanes (1-3) were compared in MFC7, SkBr3, and SUM159 cell lines, as well as SUM159 grown in cancer stem cell-inducing conditions. Based on the royleanones’ bioactivity, the derivatives RoyBz (4), RoyBzCl (5), RoyPr2 (6), and DihydroxyRoy (7), previously obtained from 2, were selected for further studies. Protein kinases C (PKCs) are involved in several carcinogenic processes. Thus, PKCs are potential targets for cancer therapy. To date, the portfolio of available PKC modulators remains very limited due to the difficulty of designing isozyme-selective PKC modulators. As such, molecular docking was used to evaluate royleanones 1-6 as predicted isozyme-selective PKC binders. Subtle changes in the binding site of each PKC isoform change the predicted interaction profiles of the ligands. Subtle changes in royleanone substitution patterns, such as a double substitution only with non-substituted phenyls, or hydroxybenzoate at position four that flips the binding mode of ParvD (3), can increase the predicted interactions in certain PKC subtypes.
T2  - International Journal of Molecular Sciences
T1  - Activity to Breast Cancer Cell Lines of Different Malignancy and Predicted Interaction with Protein Kinase C Isoforms of Royleanones
VL  - 21
IS  - 10
SP  - 3671
DO  - 10.3390/ijms21103671
ER  - 

@article{
author = "Isca, Vera M. S. and Senćanski, Milan V. and Filipović, Nenad R. and Dos Santos, Daniel J. V. A. and Čipak Gašparović, Ana and Saraiva, Lucilia and Afonso, Carlos A M and Rijo, Patrícia and Garcia-Sosa, Alfonso T",
year = "2020",
abstract = "Plants have been used for centuries to treat several illnesses. The Plectranthus genus has a vast variety of species that has allowed the isolation of cytotoxic compounds with notable activities. The abietane diterpenes 6,7-dehydroroyleanone (DeRoy, 1), 7α-acetoxy-6β-hydroxyroyleanone (Roy, 2), and Parvifloron D (ParvD, 3) were obtained from Plectranthus spp. and showed promising biological activities, such as cytotoxicity. The inhibitory effects of the different natural abietanes (1-3) were compared in MFC7, SkBr3, and SUM159 cell lines, as well as SUM159 grown in cancer stem cell-inducing conditions. Based on the royleanones’ bioactivity, the derivatives RoyBz (4), RoyBzCl (5), RoyPr2 (6), and DihydroxyRoy (7), previously obtained from 2, were selected for further studies. Protein kinases C (PKCs) are involved in several carcinogenic processes. Thus, PKCs are potential targets for cancer therapy. To date, the portfolio of available PKC modulators remains very limited due to the difficulty of designing isozyme-selective PKC modulators. As such, molecular docking was used to evaluate royleanones 1-6 as predicted isozyme-selective PKC binders. Subtle changes in the binding site of each PKC isoform change the predicted interaction profiles of the ligands. Subtle changes in royleanone substitution patterns, such as a double substitution only with non-substituted phenyls, or hydroxybenzoate at position four that flips the binding mode of ParvD (3), can increase the predicted interactions in certain PKC subtypes., Plants have been used for centuries to treat several illnesses. The Plectranthus genus has a vast variety of species that has allowed the isolation of cytotoxic compounds with notable activities. The abietane diterpenes 6,7-dehydroroyleanone (DeRoy, 1), 7α-acetoxy-6β-hydroxyroyleanone (Roy, 2), and Parvifloron D (ParvD, 3) were obtained from Plectranthus spp. and showed promising biological activities, such as cytotoxicity. The inhibitory effects of the different natural abietanes (1-3) were compared in MFC7, SkBr3, and SUM159 cell lines, as well as SUM159 grown in cancer stem cell-inducing conditions. Based on the royleanones’ bioactivity, the derivatives RoyBz (4), RoyBzCl (5), RoyPr2 (6), and DihydroxyRoy (7), previously obtained from 2, were selected for further studies. Protein kinases C (PKCs) are involved in several carcinogenic processes. Thus, PKCs are potential targets for cancer therapy. To date, the portfolio of available PKC modulators remains very limited due to the difficulty of designing isozyme-selective PKC modulators. As such, molecular docking was used to evaluate royleanones 1-6 as predicted isozyme-selective PKC binders. Subtle changes in the binding site of each PKC isoform change the predicted interaction profiles of the ligands. Subtle changes in royleanone substitution patterns, such as a double substitution only with non-substituted phenyls, or hydroxybenzoate at position four that flips the binding mode of ParvD (3), can increase the predicted interactions in certain PKC subtypes.",
journal = "International Journal of Molecular Sciences",
title = "Activity to Breast Cancer Cell Lines of Different Malignancy and Predicted Interaction with Protein Kinase C Isoforms of Royleanones",
volume = "21",
number = "10",
pages = "3671",
doi = "10.3390/ijms21103671"
}

Isca, V. M. S., Senćanski, M. V., Filipović, N. R., Dos Santos, D. J. V. A., Čipak Gašparović, A., Saraiva, L., Afonso, C. A. M., Rijo, P.,& Garcia-Sosa, A. T.. (2020). Activity to Breast Cancer Cell Lines of Different Malignancy and Predicted Interaction with Protein Kinase C Isoforms of Royleanones. in International Journal of Molecular Sciences, 21(10), 3671.
https://doi.org/10.3390/ijms21103671

Isca VMS, Senćanski MV, Filipović NR, Dos Santos DJVA, Čipak Gašparović A, Saraiva L, Afonso CAM, Rijo P, Garcia-Sosa AT. Activity to Breast Cancer Cell Lines of Different Malignancy and Predicted Interaction with Protein Kinase C Isoforms of Royleanones. in International Journal of Molecular Sciences. 2020;21(10):3671.
doi:10.3390/ijms21103671 .

Isca, Vera M. S., Senćanski, Milan V., Filipović, Nenad R., Dos Santos, Daniel J. V. A., Čipak Gašparović, Ana, Saraiva, Lucilia, Afonso, Carlos A M, Rijo, Patrícia, Garcia-Sosa, Alfonso T, "Activity to Breast Cancer Cell Lines of Different Malignancy and Predicted Interaction with Protein Kinase C Isoforms of Royleanones" in International Journal of Molecular Sciences, 21, no. 10 (2020):3671,
https://doi.org/10.3390/ijms21103671 . .

TY  - JOUR
AU  - Stevanović, Strahinja
AU  - Senćanski, Milan V.
AU  - Danel, Mathieu
AU  - Menendez, Christophe
AU  - Belguedj, Roumaissa
AU  - Bouraiou, Abdelmalek
AU  - Nikolić, Katarina M.
AU  - Cojean, Sandrine
AU  - Loiseau, Philippe Marie
AU  - Glišić, Sanja
AU  - Baltas, Michel
AU  - García-Sosa, Alfonso T.
PY  - 2019
UR  - https://www.mdpi.com/1420-3049/24/7/1282
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8137
AB  - Due to the lack of approved vaccines against human leishmaniasis and the limitations of the current chemotherapy inducing side effects and drug resistance, development of new, effective chemotherapeutic agents is essential. This study describes the synthesis of a series of novel oxadiazoles and indolizine-containing compounds. The compounds were screened in silico using an EIIP/AQVN filter followed by ligand-based virtual screening and molecular docking to parasite arginase. Top hits were further screened versus human arginase and finally against an anti-target battery to tag their possible interactions with proteins essential for the metabolism and clearance of many substances. Eight candidate compounds were selected for further experimental testing. The results show measurable in vitro anti-leishmanial activity for three compounds. One compound with an IC50 value of 2.18 µM on Leishmania donovani intramacrophage amastigotes is clearly better positioned than the others as an interesting molecular template for further development of new anti-leishmanial agents.
T2  - Molecules
T1  - Synthesis, In Silico, and In Vitro Evaluation of Anti-Leishmanial Activity of Oxadiazoles and Indolizine Containing Compounds Flagged against Anti-Targets
VL  - 24
IS  - 7
SP  - 1282
DO  - 10.3390/molecules24071282
ER  - 

@article{
author = "Stevanović, Strahinja and Senćanski, Milan V. and Danel, Mathieu and Menendez, Christophe and Belguedj, Roumaissa and Bouraiou, Abdelmalek and Nikolić, Katarina M. and Cojean, Sandrine and Loiseau, Philippe Marie and Glišić, Sanja and Baltas, Michel and García-Sosa, Alfonso T.",
year = "2019",
abstract = "Due to the lack of approved vaccines against human leishmaniasis and the limitations of the current chemotherapy inducing side effects and drug resistance, development of new, effective chemotherapeutic agents is essential. This study describes the synthesis of a series of novel oxadiazoles and indolizine-containing compounds. The compounds were screened in silico using an EIIP/AQVN filter followed by ligand-based virtual screening and molecular docking to parasite arginase. Top hits were further screened versus human arginase and finally against an anti-target battery to tag their possible interactions with proteins essential for the metabolism and clearance of many substances. Eight candidate compounds were selected for further experimental testing. The results show measurable in vitro anti-leishmanial activity for three compounds. One compound with an IC50 value of 2.18 µM on Leishmania donovani intramacrophage amastigotes is clearly better positioned than the others as an interesting molecular template for further development of new anti-leishmanial agents.",
journal = "Molecules",
title = "Synthesis, In Silico, and In Vitro Evaluation of Anti-Leishmanial Activity of Oxadiazoles and Indolizine Containing Compounds Flagged against Anti-Targets",
volume = "24",
number = "7",
pages = "1282",
doi = "10.3390/molecules24071282"
}

Stevanović, S., Senćanski, M. V., Danel, M., Menendez, C., Belguedj, R., Bouraiou, A., Nikolić, K. M., Cojean, S., Loiseau, P. M., Glišić, S., Baltas, M.,& García-Sosa, A. T.. (2019). Synthesis, In Silico, and In Vitro Evaluation of Anti-Leishmanial Activity of Oxadiazoles and Indolizine Containing Compounds Flagged against Anti-Targets. in Molecules, 24(7), 1282.
https://doi.org/10.3390/molecules24071282

Stevanović S, Senćanski MV, Danel M, Menendez C, Belguedj R, Bouraiou A, Nikolić KM, Cojean S, Loiseau PM, Glišić S, Baltas M, García-Sosa AT. Synthesis, In Silico, and In Vitro Evaluation of Anti-Leishmanial Activity of Oxadiazoles and Indolizine Containing Compounds Flagged against Anti-Targets. in Molecules. 2019;24(7):1282.
doi:10.3390/molecules24071282 .

Stevanović, Strahinja, Senćanski, Milan V., Danel, Mathieu, Menendez, Christophe, Belguedj, Roumaissa, Bouraiou, Abdelmalek, Nikolić, Katarina M., Cojean, Sandrine, Loiseau, Philippe Marie, Glišić, Sanja, Baltas, Michel, García-Sosa, Alfonso T., "Synthesis, In Silico, and In Vitro Evaluation of Anti-Leishmanial Activity of Oxadiazoles and Indolizine Containing Compounds Flagged against Anti-Targets" in Molecules, 24, no. 7 (2019):1282,
https://doi.org/10.3390/molecules24071282 . .

TY  - JOUR
AU  - Glišić, Sanja
AU  - Senćanski, Milan V.
AU  - Perović, Vladimir R.
AU  - Stevanović, Strahinja
AU  - Garcia-Sosa, Alfonso T.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1187
AB  - Arginase, a drug target for the treatment of leishmaniasis, is involved in the biosynthesis of polyamines. Flavonoids are interesting natural compounds found in many foods and some of them may inhibit this enzyme. The MetIDB database containing 5667 compounds was screened using an EIIP/AQVN filter and 3D QSAR to find the most promising candidate compounds. In addition, these top hits were screened in silico versus human arginase and an anti-target battery consisting of cytochromes P450 2a6, 2c9, 3a4, sulfotransferase, and the pregnane-X-receptor in order to flag their possible interactions with these proteins involved in the metabolism of substances. The resulting compounds may have promise to be further developed for the treatment of leishmaniasis.
T2  - Molecules
T1  - Arginase Flavonoid Anti-Leishmanial in Silico Inhibitors Flagged against Anti-Targets
VL  - 21
IS  - 5
SP  - 589
DO  - 10.3390/molecules21050589
ER  - 

@article{
author = "Glišić, Sanja and Senćanski, Milan V. and Perović, Vladimir R. and Stevanović, Strahinja and Garcia-Sosa, Alfonso T.",
year = "2016",
abstract = "Arginase, a drug target for the treatment of leishmaniasis, is involved in the biosynthesis of polyamines. Flavonoids are interesting natural compounds found in many foods and some of them may inhibit this enzyme. The MetIDB database containing 5667 compounds was screened using an EIIP/AQVN filter and 3D QSAR to find the most promising candidate compounds. In addition, these top hits were screened in silico versus human arginase and an anti-target battery consisting of cytochromes P450 2a6, 2c9, 3a4, sulfotransferase, and the pregnane-X-receptor in order to flag their possible interactions with these proteins involved in the metabolism of substances. The resulting compounds may have promise to be further developed for the treatment of leishmaniasis.",
journal = "Molecules",
title = "Arginase Flavonoid Anti-Leishmanial in Silico Inhibitors Flagged against Anti-Targets",
volume = "21",
number = "5",
pages = "589",
doi = "10.3390/molecules21050589"
}

Glišić, S., Senćanski, M. V., Perović, V. R., Stevanović, S.,& Garcia-Sosa, A. T.. (2016). Arginase Flavonoid Anti-Leishmanial in Silico Inhibitors Flagged against Anti-Targets. in Molecules, 21(5), 589.
https://doi.org/10.3390/molecules21050589

Glišić S, Senćanski MV, Perović VR, Stevanović S, Garcia-Sosa AT. Arginase Flavonoid Anti-Leishmanial in Silico Inhibitors Flagged against Anti-Targets. in Molecules. 2016;21(5):589.
doi:10.3390/molecules21050589 .

Glišić, Sanja, Senćanski, Milan V., Perović, Vladimir R., Stevanović, Strahinja, Garcia-Sosa, Alfonso T., "Arginase Flavonoid Anti-Leishmanial in Silico Inhibitors Flagged against Anti-Targets" in Molecules, 21, no. 5 (2016):589,
https://doi.org/10.3390/molecules21050589 . .