TY  - JOUR
AU  - Elshaflu, Hana
AU  - Todorović, Tamara R.
AU  - Nikolić, Milan
AU  - Lolić, Aleksandar
AU  - Visnjevac, Aleksandar
AU  - Hagenow, Stefanie
AU  - Padron, Jose M.
AU  - Garcia-Sosa, Alfonso T.
AU  - Djordjević, Ivana S.
AU  - Grubisić, Sonja
AU  - Stark, Holger
AU  - Filipović, Nenad
PY  - 2018
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4773
AB  - The novel approach in the treatment of complex multifactorial diseases, such as neurodegenerative disorders and cancer, requires a development of efficient multi-targeting oriented drugs. Since oxidative stress significantly contributes to the pathogenesis of cancer and neurodegenerative disorders, potential drug candidates should possess good antioxidant properties Due to promising biological activities shown for structurally related (1,3-thiazol-2-yl)hydrazones, a focused library of 12 structurally related benzylidene-based (1,3-selenazol-2-yl)hydrazones was designed as potential multi-targeting compounds. Monoamine oxidases (MAO) A/B inhibition properties of this class of compounds have been investigated. Surprisingly, the p-nitrophenyl-substituted (1,3-selenazol-2-yl)hydrazone 4 showed MAO B inhibition in a nanomolar concentration range (IC50 = 73 nM). Excellent antioxidant properties were confirmed in a number of different in vitro assays. Antiproliferative activity screening on a panel of six human solid tumor cell lines showed that potencies of some of the investigated compounds was comparable or even better than that of the positive control 5-fluorouracil. In-silico calculations of ADME properties pointed to promising good pharmacokinetic profiles of investigated compounds. Docking studies suggest that some compounds, compared to positive controls, have the ability to strongly interact with targets relevant to cancer such as 5'-nucleotidase, and to neurodegenerative diseases such as the small conductance calcium-activated potassium channel protein 1, in addition to confirmation of inhibitory binding at MAO B.
PB  - Frontiers Media Sa, Lausanne
T2  - Frontiers in Chemistry
T1  - Selenazolyl-hydrazones as Novel Selective MAO Inhibitors With Antiproliferative and Antioxidant Activities: Experimental and In-silico Studies
VL  - 6
DO  - 10.3389/fchem.2018.00247
ER  - 

@article{
author = "Elshaflu, Hana and Todorović, Tamara R. and Nikolić, Milan and Lolić, Aleksandar and Visnjevac, Aleksandar and Hagenow, Stefanie and Padron, Jose M. and Garcia-Sosa, Alfonso T. and Djordjević, Ivana S. and Grubisić, Sonja and Stark, Holger and Filipović, Nenad",
year = "2018",
abstract = "The novel approach in the treatment of complex multifactorial diseases, such as neurodegenerative disorders and cancer, requires a development of efficient multi-targeting oriented drugs. Since oxidative stress significantly contributes to the pathogenesis of cancer and neurodegenerative disorders, potential drug candidates should possess good antioxidant properties Due to promising biological activities shown for structurally related (1,3-thiazol-2-yl)hydrazones, a focused library of 12 structurally related benzylidene-based (1,3-selenazol-2-yl)hydrazones was designed as potential multi-targeting compounds. Monoamine oxidases (MAO) A/B inhibition properties of this class of compounds have been investigated. Surprisingly, the p-nitrophenyl-substituted (1,3-selenazol-2-yl)hydrazone 4 showed MAO B inhibition in a nanomolar concentration range (IC50 = 73 nM). Excellent antioxidant properties were confirmed in a number of different in vitro assays. Antiproliferative activity screening on a panel of six human solid tumor cell lines showed that potencies of some of the investigated compounds was comparable or even better than that of the positive control 5-fluorouracil. In-silico calculations of ADME properties pointed to promising good pharmacokinetic profiles of investigated compounds. Docking studies suggest that some compounds, compared to positive controls, have the ability to strongly interact with targets relevant to cancer such as 5'-nucleotidase, and to neurodegenerative diseases such as the small conductance calcium-activated potassium channel protein 1, in addition to confirmation of inhibitory binding at MAO B.",
publisher = "Frontiers Media Sa, Lausanne",
journal = "Frontiers in Chemistry",
title = "Selenazolyl-hydrazones as Novel Selective MAO Inhibitors With Antiproliferative and Antioxidant Activities: Experimental and In-silico Studies",
volume = "6",
doi = "10.3389/fchem.2018.00247"
}

Elshaflu, H., Todorović, T. R., Nikolić, M., Lolić, A., Visnjevac, A., Hagenow, S., Padron, J. M., Garcia-Sosa, A. T., Djordjević, I. S., Grubisić, S., Stark, H.,& Filipović, N.. (2018). Selenazolyl-hydrazones as Novel Selective MAO Inhibitors With Antiproliferative and Antioxidant Activities: Experimental and In-silico Studies. in Frontiers in Chemistry
Frontiers Media Sa, Lausanne., 6.
https://doi.org/10.3389/fchem.2018.00247

Elshaflu H, Todorović TR, Nikolić M, Lolić A, Visnjevac A, Hagenow S, Padron JM, Garcia-Sosa AT, Djordjević IS, Grubisić S, Stark H, Filipović N. Selenazolyl-hydrazones as Novel Selective MAO Inhibitors With Antiproliferative and Antioxidant Activities: Experimental and In-silico Studies. in Frontiers in Chemistry. 2018;6.
doi:10.3389/fchem.2018.00247 .

Elshaflu, Hana, Todorović, Tamara R., Nikolić, Milan, Lolić, Aleksandar, Visnjevac, Aleksandar, Hagenow, Stefanie, Padron, Jose M., Garcia-Sosa, Alfonso T., Djordjević, Ivana S., Grubisić, Sonja, Stark, Holger, Filipović, Nenad, "Selenazolyl-hydrazones as Novel Selective MAO Inhibitors With Antiproliferative and Antioxidant Activities: Experimental and In-silico Studies" in Frontiers in Chemistry, 6 (2018),
https://doi.org/10.3389/fchem.2018.00247 . .

TY  - JOUR
AU  - Filipović, Nenad
AU  - Elshaflu, Hana
AU  - Grubisić, Sonja
AU  - Jovanović, Ljiljana S.
AU  - Rodić, Marko
AU  - Novaković, Irena
AU  - Malesević, Aleksandar
AU  - Djordjević, Ivana S.
AU  - Li, Haidong
AU  - Sojić, Neso
AU  - Marinković, Aleksandar
AU  - Todorović, Tamara R.
PY  - 2017
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4392
AB  - The first Co(III) complexes with (1,3-selenazol-2-yl)hydrazones as an unexplored class of ligands were prepared and characterized by NMR spectroscopy and X-ray diffraction analysis. The novel ligands act as NNN tridentate chelators forming octahedral Co(III) complexes. The impact of structural changes on ligands' periphery as well as that of isosteric replacement of sulphur with selenium on the electrochemical and electronic absorption features of complexes are explored. To support the experimental data, density functional theory (DFT) calculations were also conducted. Theoretical NMR chemical shifts, the relative energies and natural bond orbital (NBO) analysis are calculated within the DFT approach, while the singlet excited state energies and HOMO-LUMO energy gap were calculated with time-dependent density functional theory (TD-DFT). The electrophilic f(-) and nucleophilic f(+) Fukui functions are well adapted to find the electrophile and nucleophile centres in the molecules. Both (1,3-selenazol-2-yl)- and (1,3-thiazol-2-yl) hydrazone Co(III) complexes showed potent antimicrobial and antioxidant activity. A significant difference among them was a smaller cytotoxicity of selenium compounds.
PB  - Royal Soc Chemistry, Cambridge
T2  - Dalton Transactions
T1  - Co(III) complexes of (1,3-selenazol-2-yl)hydrazones and their sulphur analogues
EP  - 2924
IS  - 9
SP  - 2910
VL  - 46
DO  - 10.1039/c6dt04785h
ER  - 

@article{
author = "Filipović, Nenad and Elshaflu, Hana and Grubisić, Sonja and Jovanović, Ljiljana S. and Rodić, Marko and Novaković, Irena and Malesević, Aleksandar and Djordjević, Ivana S. and Li, Haidong and Sojić, Neso and Marinković, Aleksandar and Todorović, Tamara R.",
year = "2017",
abstract = "The first Co(III) complexes with (1,3-selenazol-2-yl)hydrazones as an unexplored class of ligands were prepared and characterized by NMR spectroscopy and X-ray diffraction analysis. The novel ligands act as NNN tridentate chelators forming octahedral Co(III) complexes. The impact of structural changes on ligands' periphery as well as that of isosteric replacement of sulphur with selenium on the electrochemical and electronic absorption features of complexes are explored. To support the experimental data, density functional theory (DFT) calculations were also conducted. Theoretical NMR chemical shifts, the relative energies and natural bond orbital (NBO) analysis are calculated within the DFT approach, while the singlet excited state energies and HOMO-LUMO energy gap were calculated with time-dependent density functional theory (TD-DFT). The electrophilic f(-) and nucleophilic f(+) Fukui functions are well adapted to find the electrophile and nucleophile centres in the molecules. Both (1,3-selenazol-2-yl)- and (1,3-thiazol-2-yl) hydrazone Co(III) complexes showed potent antimicrobial and antioxidant activity. A significant difference among them was a smaller cytotoxicity of selenium compounds.",
publisher = "Royal Soc Chemistry, Cambridge",
journal = "Dalton Transactions",
title = "Co(III) complexes of (1,3-selenazol-2-yl)hydrazones and their sulphur analogues",
pages = "2924-2910",
number = "9",
volume = "46",
doi = "10.1039/c6dt04785h"
}

Filipović, N., Elshaflu, H., Grubisić, S., Jovanović, L. S., Rodić, M., Novaković, I., Malesević, A., Djordjević, I. S., Li, H., Sojić, N., Marinković, A.,& Todorović, T. R.. (2017). Co(III) complexes of (1,3-selenazol-2-yl)hydrazones and their sulphur analogues. in Dalton Transactions
Royal Soc Chemistry, Cambridge., 46(9), 2910-2924.
https://doi.org/10.1039/c6dt04785h

Filipović N, Elshaflu H, Grubisić S, Jovanović LS, Rodić M, Novaković I, Malesević A, Djordjević IS, Li H, Sojić N, Marinković A, Todorović TR. Co(III) complexes of (1,3-selenazol-2-yl)hydrazones and their sulphur analogues. in Dalton Transactions. 2017;46(9):2910-2924.
doi:10.1039/c6dt04785h .

Filipović, Nenad, Elshaflu, Hana, Grubisić, Sonja, Jovanović, Ljiljana S., Rodić, Marko, Novaković, Irena, Malesević, Aleksandar, Djordjević, Ivana S., Li, Haidong, Sojić, Neso, Marinković, Aleksandar, Todorović, Tamara R., "Co(III) complexes of (1,3-selenazol-2-yl)hydrazones and their sulphur analogues" in Dalton Transactions, 46, no. 9 (2017):2910-2924,
https://doi.org/10.1039/c6dt04785h . .

TY  - JOUR
AU  - Elshaflu, Hana
AU  - Bjelogrlić, Snežana
AU  - Muller, Christian D.
AU  - Todorović, Tamara R.
AU  - Rodić, Marko
AU  - Marinković, Aleksandar
AU  - Filipović, Nenad
PY  - 2016
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4100
AB  - Co(III) complex with a 2-hydrazonylthiazole ligand was synthesized and characterized by single-crystal X-ray diffraction. In the inner sphere of the complex, two monoionic ligands are coordinated tridentately forming octahedral geometry around Co(III). Activity of the complex was investigated on MCF-7 breast cancer cell line, with cisplatin (CDDP) as a reference compound. Results showed that after 24-h incubation, Co(III) complex revealed stronger cytotoxic activity compared to CDDP. Treatment of MCF-7 3-D cell model with the complex at 10M concentration achieved complete suppression of spheroid growth in almost the same extent as at 100M. In combination treatments on MCF-7 spheroids, the complex acted synergistically with CDDP, while additive interaction type was achieved when the complex was applied together with paclitaxel. [GRAPHICS] .
PB  - Taylor & Francis Ltd, Abingdon
T2  - Journal of Coordination Chemistry
T1  - Co(III) complex with (E)-2-(2-(pyridine-2-ylmethylene)hydrazinyl)-4-(4-tolyl)-1,3-thiazole: structure and activity against 2-D and 3-D cancer cell models
EP  - 3366
IS  - 22
SP  - 3354
VL  - 69
DO  - 10.1080/00958972.2016.1232404
ER  - 

@article{
author = "Elshaflu, Hana and Bjelogrlić, Snežana and Muller, Christian D. and Todorović, Tamara R. and Rodić, Marko and Marinković, Aleksandar and Filipović, Nenad",
year = "2016",
abstract = "Co(III) complex with a 2-hydrazonylthiazole ligand was synthesized and characterized by single-crystal X-ray diffraction. In the inner sphere of the complex, two monoionic ligands are coordinated tridentately forming octahedral geometry around Co(III). Activity of the complex was investigated on MCF-7 breast cancer cell line, with cisplatin (CDDP) as a reference compound. Results showed that after 24-h incubation, Co(III) complex revealed stronger cytotoxic activity compared to CDDP. Treatment of MCF-7 3-D cell model with the complex at 10M concentration achieved complete suppression of spheroid growth in almost the same extent as at 100M. In combination treatments on MCF-7 spheroids, the complex acted synergistically with CDDP, while additive interaction type was achieved when the complex was applied together with paclitaxel. [GRAPHICS] .",
publisher = "Taylor & Francis Ltd, Abingdon",
journal = "Journal of Coordination Chemistry",
title = "Co(III) complex with (E)-2-(2-(pyridine-2-ylmethylene)hydrazinyl)-4-(4-tolyl)-1,3-thiazole: structure and activity against 2-D and 3-D cancer cell models",
pages = "3366-3354",
number = "22",
volume = "69",
doi = "10.1080/00958972.2016.1232404"
}

Elshaflu, H., Bjelogrlić, S., Muller, C. D., Todorović, T. R., Rodić, M., Marinković, A.,& Filipović, N.. (2016). Co(III) complex with (E)-2-(2-(pyridine-2-ylmethylene)hydrazinyl)-4-(4-tolyl)-1,3-thiazole: structure and activity against 2-D and 3-D cancer cell models. in Journal of Coordination Chemistry
Taylor & Francis Ltd, Abingdon., 69(22), 3354-3366.
https://doi.org/10.1080/00958972.2016.1232404

Elshaflu H, Bjelogrlić S, Muller CD, Todorović TR, Rodić M, Marinković A, Filipović N. Co(III) complex with (E)-2-(2-(pyridine-2-ylmethylene)hydrazinyl)-4-(4-tolyl)-1,3-thiazole: structure and activity against 2-D and 3-D cancer cell models. in Journal of Coordination Chemistry. 2016;69(22):3354-3366.
doi:10.1080/00958972.2016.1232404 .

Elshaflu, Hana, Bjelogrlić, Snežana, Muller, Christian D., Todorović, Tamara R., Rodić, Marko, Marinković, Aleksandar, Filipović, Nenad, "Co(III) complex with (E)-2-(2-(pyridine-2-ylmethylene)hydrazinyl)-4-(4-tolyl)-1,3-thiazole: structure and activity against 2-D and 3-D cancer cell models" in Journal of Coordination Chemistry, 69, no. 22 (2016):3354-3366,
https://doi.org/10.1080/00958972.2016.1232404 . .