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Protective effect of reduced glutathione C60 derivative against hydrogen peroxide-induced apoptosis in HEK 293T cells / 华中科技大学学报(医学)(英德文版)
Journal of Huazhong University of Science and Technology (Medical Sciences) ; (6): 356-363, 2016.
Article in English | WPRIM | ID: wpr-285263
ABSTRACT
Hydrogen peroxide (H2O2) and free radicals cause oxidative stress, which induces cellular injuries, metabolic dysfunction, and even cell death in various clinical abnormalities. Fullerene (C60) is critical for scavenging oxygen free radicals originated from cell metabolism, and reduced glutathione (GSH) is another important endogenous antioxidant. In this study, a novel water-soluble reduced glutathione fullerene derivative (C60-GSH) was successfully synthesized, and its beneficial roles in protecting against H2O2-induced oxidative stress and apoptosis in cultured HEK 293T cells were investigated. Fourier Transform infrared spectroscopy and (1)H nuclear magnetic resonance were used to confirm the chemical structure of C60-GSH. Our results demonstrated that C60-GSH prevented the reactive oxygen species (ROS)-mediated cell damage. Additionally, C60-GSH pretreatment significantly attenuated H2O2-induced superoxide dismutase (SOD) consumption and malondialdehyde (MDA) elevation. Furthermore, C60-GSH inhibited intracellular calcium mobilization, and subsequent cell apoptosis via bcl-2/bax-caspase-3 signaling pathway induced by H2O2 stimulation in HEK 293T cells. Importantly, these protective effects of C60-GSH were superior to those of GSH. In conclusion, these results suggested that C60-GSH has potential to protect against H2O2-induced cell apoptosis by scavenging free radicals and maintaining intracellular calcium homeostasis without evident toxicity.
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Full text: Available Index: WPRIM (Western Pacific) Main subject: Pharmacology / Superoxide Dismutase / Signal Transduction / Cell Survival / Chemistry / Gene Expression Regulation / Calcium / Reactive Oxygen Species / Ion Transport / Apoptosis Limits: Humans Language: English Journal: Journal of Huazhong University of Science and Technology (Medical Sciences) Year: 2016 Type: Article

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Full text: Available Index: WPRIM (Western Pacific) Main subject: Pharmacology / Superoxide Dismutase / Signal Transduction / Cell Survival / Chemistry / Gene Expression Regulation / Calcium / Reactive Oxygen Species / Ion Transport / Apoptosis Limits: Humans Language: English Journal: Journal of Huazhong University of Science and Technology (Medical Sciences) Year: 2016 Type: Article