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Graphene quantum dot antioxidant and proautophagic actions protect SH-SY5Y neuroblastoma cells from oxidative stress-mediated apoptotic death
dc.creator | Krunić, Matija | |
dc.creator | Ristić, Biljana | |
dc.creator | Bošnjak, Mihajlo | |
dc.creator | Paunović, Verica | |
dc.creator | Tovilović-Kovačević, Gordana | |
dc.creator | Zogović, Nevena | |
dc.creator | Mirčić, Aleksandar | |
dc.creator | Marković, Zoran | |
dc.creator | Todorović-Marković, Biljana | |
dc.creator | Jovanović, Svetlana | |
dc.creator | Kleut, Duška | |
dc.creator | Mojović, Miloš | |
dc.creator | Nakarada, Đura | |
dc.creator | Marković, Olivera | |
dc.creator | Vuković, Irena | |
dc.creator | Harhaji-Trajković, Ljubica | |
dc.creator | Trajković, Vladimir | |
dc.date.accessioned | 2021-10-26T14:02:33Z | |
dc.date.available | 2021-10-26T14:02:33Z | |
dc.date.issued | 2021 | |
dc.identifier.issn | 0891-5849 | |
dc.identifier.uri | https://cer.ihtm.bg.ac.rs/handle/123456789/4812 | |
dc.description.abstract | We investigated the ability of graphene quantum dot (GQD) nanoparticles to protect SH-SY5Y human neuroblastoma cells from oxidative/nitrosative stress induced by iron-nitrosyl complex sodium nitroprusside (SNP). GQD reduced SNP cytotoxicity by preventing mitochondrial depolarization, caspase-2 activation, and subsequent apoptotic death. Although GQD diminished the levels of nitric oxide (NO) in SNP-exposed cells, NO scavengers displayed only a slight protective effect, suggesting that NO quenching was not the main protective mechanism of GQD. GQD also reduced SNP-triggered increase in the intracellular levels of hydroxyl radical (•OH), superoxide anion (O2•- ), and lipid peroxidation. Nonselective antioxidants, •OH scavenging, and iron chelators, but not superoxide dismutase, mimicked GQD cytoprotective activity, indicating that GQD protect cells by neutralizing •OH generated in the presence of SNP-released iron. Cellular internalization of GQD was required for optimal protection, since a removal of extracellular GQD by extensive washing only partly diminished their protective effect. Moreover, GQD cooperated with SNP to induce autophagy, as confirmed by the inhibition of autophagylimiting Akt/PRAS40/mTOR signaling and increase in autophagy gene transcription, protein levels of proautophagic beclin-1 and LC3-II, formation of autophagic vesicles, and degradation of autophagic target p62. The antioxidant activity of GQD was not involved in autophagy induction, as antioxidants N-acetylcysteine and dimethyl sulfoxide failed to stimulate autophagy in SNP-exposed cells. Pharmacological inhibitors of early (wortmannin, 3-methyladenine) or late stages of autophagy (NH4Cl) efficiently reduced the protective effect of GQD. Therefore, the ability of GQD to prevent the in vitro neurotoxicity of SNP depends on both •OH/NO scavenging and induction of cytoprotective autophagy. | sr |
dc.language.iso | en | sr |
dc.publisher | Elsevier | sr |
dc.relation | info:eu-repo/grantAgreement/MESTD/inst-2020/200026/RS// | sr |
dc.relation | info:eu-repo/grantAgreement/MESTD/inst-2020/200007/RS// | sr |
dc.relation | info:eu-repo/grantAgreement/MESTD/inst-2020/200110/RS// | sr |
dc.relation | info:eu-repo/grantAgreement/MESTD/inst-2020/200017/RS// | sr |
dc.relation | info:eu-repo/grantAgreement/MESTD/inst-2020/200146/RS// | sr |
dc.relation.isversionof | https://cer.ihtm.bg.ac.rs/handle/123456789/4818 | |
dc.rights | restrictedAccess | sr |
dc.source | Free Radical Biology and Medicine | sr |
dc.subject | Graphene quantum dots | sr |
dc.subject | Sodium nitroprusside | sr |
dc.subject | Neurotoxicity | sr |
dc.subject | Oxidative stress | sr |
dc.subject | Hydroxyl radical | sr |
dc.subject | Nitric oxide | sr |
dc.subject | Autophagy | sr |
dc.title | Graphene quantum dot antioxidant and proautophagic actions protect SH-SY5Y neuroblastoma cells from oxidative stress-mediated apoptotic death | sr |
dc.type | article | sr |
dc.rights.license | ARR | sr |
dcterms.abstract | Зоговић, Невена; Мирчић, Aлександар; Марковић, Зоран; Тодоровић-Марковић, Биљана; Јовановић, Светлана; Клеут, Душка; Мојовић, Милош; Накарада, Ђура; Марковић, Оливера; Вуковић, Ирена; Хархаји-Трајковић, Љубица; Трајковић, Владимир; Товиловић-Ковачевић, Гордана; Пауновић, Верица; Бошњак, Михајло; Ристић, Биљана; Крунић, Матија; | |
dc.citation.volume | 177 | |
dc.citation.spage | 167 | |
dc.citation.epage | 180 | |
dc.citation.rank | M21~ | |
dc.description.other | The peer-reviewed version: [https://cer.ihtm.bg.ac.rs/handle/123456789/4818] | |
dc.identifier.doi | 10.1016/j.freeradbiomed.2021.10.025 | |
dc.identifier.scopus | 2-s2.0-85117824181 | |
dc.identifier.wos | 000717740300004 | |
dc.type.version | publishedVersion | sr |