TY  - JOUR
AU  - Isaković, Aleksandra
AU  - Janković, Teodora
AU  - Harhaji, Ljubica
AU  - Kostić Rajačić, Slađana
AU  - Nikolić, Zoran
AU  - Vajs, Vlatka
AU  - Trajković, Vladimir
PY  - 2008
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/478
AB  - The present study identifies xanthones gentiakochianin and gentiacaulein as the active principles responsible for the in vitro antiglioma action of ether and methanolic extracts of the plant Gentiana kochiana. Gentiakochianin and gentiacaulein induced cell cycle arrest in G2/M and G0/G1 phases, respectively, in both C6 rat glioma and U251 human glioma cell lines. The more efficient antiproliferative action of gentiakochianin was associated with its ability to induce microtubule stabilization in a cell-free assay. Both the xanthones reduced mitochondrial membrane potential and increased the production of reactive oxygen species in glioma cells, but only the effects of gentiakochianin were pronounced enough to cause caspase activation and subsequent apoptotic cell death. The assessment of structure-activity relationship in a series of structurally related xanthones from G. kochiana and Gentianella austriaca revealed dihydroxylation at positions 7, 8 of the xanthonic nucleus as the key structural feature responsible for the ability of gentiakochianin to induce microtubule-associated G2/M cell block and apoptotic cell death in glioma cells.
PB  - Oxford : Pergamon-Elsevier Science Ltd
T2  - Bioorganic and Medicinal Chemistry
T1  - Antiglioma action of xanthones from Gentiana kochiana: Mechanistic and structure-activity requirements
VL  - 16
IS  - 10
SP  - 5683
EP  - 5694
DO  - 10.1016/j.bmc.2008.03.069
ER  - 

@article{
author = "Isaković, Aleksandra and Janković, Teodora and Harhaji, Ljubica and Kostić Rajačić, Slađana and Nikolić, Zoran and Vajs, Vlatka and Trajković, Vladimir",
year = "2008",
abstract = "The present study identifies xanthones gentiakochianin and gentiacaulein as the active principles responsible for the in vitro antiglioma action of ether and methanolic extracts of the plant Gentiana kochiana. Gentiakochianin and gentiacaulein induced cell cycle arrest in G2/M and G0/G1 phases, respectively, in both C6 rat glioma and U251 human glioma cell lines. The more efficient antiproliferative action of gentiakochianin was associated with its ability to induce microtubule stabilization in a cell-free assay. Both the xanthones reduced mitochondrial membrane potential and increased the production of reactive oxygen species in glioma cells, but only the effects of gentiakochianin were pronounced enough to cause caspase activation and subsequent apoptotic cell death. The assessment of structure-activity relationship in a series of structurally related xanthones from G. kochiana and Gentianella austriaca revealed dihydroxylation at positions 7, 8 of the xanthonic nucleus as the key structural feature responsible for the ability of gentiakochianin to induce microtubule-associated G2/M cell block and apoptotic cell death in glioma cells.",
publisher = "Oxford : Pergamon-Elsevier Science Ltd",
journal = "Bioorganic and Medicinal Chemistry",
title = "Antiglioma action of xanthones from Gentiana kochiana: Mechanistic and structure-activity requirements",
volume = "16",
number = "10",
pages = "5683-5694",
doi = "10.1016/j.bmc.2008.03.069"
}

Isaković, A., Janković, T., Harhaji, L., Kostić Rajačić, S., Nikolić, Z., Vajs, V.,& Trajković, V.. (2008). Antiglioma action of xanthones from Gentiana kochiana: Mechanistic and structure-activity requirements. in Bioorganic and Medicinal Chemistry
Oxford : Pergamon-Elsevier Science Ltd., 16(10), 5683-5694.
https://doi.org/10.1016/j.bmc.2008.03.069

Isaković A, Janković T, Harhaji L, Kostić Rajačić S, Nikolić Z, Vajs V, Trajković V. Antiglioma action of xanthones from Gentiana kochiana: Mechanistic and structure-activity requirements. in Bioorganic and Medicinal Chemistry. 2008;16(10):5683-5694.
doi:10.1016/j.bmc.2008.03.069 .

Isaković, Aleksandra, Janković, Teodora, Harhaji, Ljubica, Kostić Rajačić, Slađana, Nikolić, Zoran, Vajs, Vlatka, Trajković, Vladimir, "Antiglioma action of xanthones from Gentiana kochiana: Mechanistic and structure-activity requirements" in Bioorganic and Medicinal Chemistry, 16, no. 10 (2008):5683-5694,
https://doi.org/10.1016/j.bmc.2008.03.069 . .

TY  - JOUR
AU  - Isaković, Aleksandra
AU  - Marković, Zoran M.
AU  - Nikolić, Nadežda
AU  - Todorović-Marković, Biljana
AU  - Vranješ-Đurić, Sanja
AU  - Harhaji, Ljubica
AU  - Raičević, Nevena
AU  - Romčević, Nebojša
AU  - Vasiljević-Radović, Dana
AU  - Dramićanin, Miroslav
AU  - Trajković, Vladimir
PY  - 2006
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4120
AB  - We investigated the effect of γ-irradiation on the cytotoxicity of pure C 60 solubilized in water by using tetrahydrofuran (THF/n-C 60 or THF/n-C 60 ). In contrast to THF/n-C 60 , its γ-irradiated counterpart failed to generate oxygen radicals and cause extracellular signal-regulated kinase (ERK)-dependent necrotic cell death in various types of mammalian cells. Moreover, γ-irradiated THF/n-C 60 protected cells from the oxidative stress induced by native THF/n-C 60 or hydrogen peroxide. The observed biological effects were associated with γ-irradiation-mediated decomposition of THF and subsequent derivatization of the n-C 60 surface. These results for the first time demonstrate γ-irradiation-mediated changes in the physico-chemical properties of THF-prepared nanocrystalline C 60 , resulting in a complete loss of its cytotoxic effect and its conversion to a cytoprotective agent.
PB  - Elsevier
T2  - Biomaterials
T1  - Inactivation of nanocrystalline C60 cytotoxicity by γ-irradiation
VL  - 27
IS  - 29
SP  - 5049
EP  - 5058
DO  - 10.1016/j.biomaterials.2006.05.047
ER  - 

@article{
author = "Isaković, Aleksandra and Marković, Zoran M. and Nikolić, Nadežda and Todorović-Marković, Biljana and Vranješ-Đurić, Sanja and Harhaji, Ljubica and Raičević, Nevena and Romčević, Nebojša and Vasiljević-Radović, Dana and Dramićanin, Miroslav and Trajković, Vladimir",
year = "2006",
abstract = "We investigated the effect of γ-irradiation on the cytotoxicity of pure C 60 solubilized in water by using tetrahydrofuran (THF/n-C 60 or THF/n-C 60 ). In contrast to THF/n-C 60 , its γ-irradiated counterpart failed to generate oxygen radicals and cause extracellular signal-regulated kinase (ERK)-dependent necrotic cell death in various types of mammalian cells. Moreover, γ-irradiated THF/n-C 60 protected cells from the oxidative stress induced by native THF/n-C 60 or hydrogen peroxide. The observed biological effects were associated with γ-irradiation-mediated decomposition of THF and subsequent derivatization of the n-C 60 surface. These results for the first time demonstrate γ-irradiation-mediated changes in the physico-chemical properties of THF-prepared nanocrystalline C 60 , resulting in a complete loss of its cytotoxic effect and its conversion to a cytoprotective agent.",
publisher = "Elsevier",
journal = "Biomaterials",
title = "Inactivation of nanocrystalline C60 cytotoxicity by γ-irradiation",
volume = "27",
number = "29",
pages = "5049-5058",
doi = "10.1016/j.biomaterials.2006.05.047"
}

Isaković, A., Marković, Z. M., Nikolić, N., Todorović-Marković, B., Vranješ-Đurić, S., Harhaji, L., Raičević, N., Romčević, N., Vasiljević-Radović, D., Dramićanin, M.,& Trajković, V.. (2006). Inactivation of nanocrystalline C60 cytotoxicity by γ-irradiation. in Biomaterials
Elsevier., 27(29), 5049-5058.
https://doi.org/10.1016/j.biomaterials.2006.05.047

Isaković A, Marković ZM, Nikolić N, Todorović-Marković B, Vranješ-Đurić S, Harhaji L, Raičević N, Romčević N, Vasiljević-Radović D, Dramićanin M, Trajković V. Inactivation of nanocrystalline C60 cytotoxicity by γ-irradiation. in Biomaterials. 2006;27(29):5049-5058.
doi:10.1016/j.biomaterials.2006.05.047 .

Isaković, Aleksandra, Marković, Zoran M., Nikolić, Nadežda, Todorović-Marković, Biljana, Vranješ-Đurić, Sanja, Harhaji, Ljubica, Raičević, Nevena, Romčević, Nebojša, Vasiljević-Radović, Dana, Dramićanin, Miroslav, Trajković, Vladimir, "Inactivation of nanocrystalline C60 cytotoxicity by γ-irradiation" in Biomaterials, 27, no. 29 (2006):5049-5058,
https://doi.org/10.1016/j.biomaterials.2006.05.047 . .