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• W4328112920 endingPage "114533" @default.
• W4328112920 startingPage "114533" @default.
• W4328112920 abstract "Functional disorders of mitochondria are closely related to muscle diseases. Many studies have also shown that oxidative stress can stimulate the production of a large number of reactive oxygen species (ROS), which have various adverse effects on mitochondria and can damage muscle cells.In this study, based on our previous research, we focused on the PINK1/Parkin pathway to explore the mechanism by which AS-IV alleviates muscle injury by inhibiting excessive mitophagy.L6 myoblasts were treated with AS-IV after stimulation with hydrogen peroxide (H2O2) and carbonyl cyanide m-chlorophenylhydrazone (CCCP). Then, we detected the related indices of oxidative stress and mitophagy by different methods. A PINK1 knockdown cell line was established by lentiviral infection to obtain further evidence that AS-IV reduces mitochondrial damage through PINK1/Parkin.After mitochondrial damage, the expression of malondialdehyde (MDA) and intracellular ROS in L6 myoblasts significantly increased, while the expression of superoxide dismutase (SOD) and ATP decreased. The mRNA and protein expression levels of Tom20 and Tim23 were decreased, while those of VDAC1 were increased. PINK1, Parkin, and LC3 II mRNA and protein expression increased, and P62 mRNA and protein expression decreased·H2O2 combined with CCCP strongly activated the mitophagy pathway and impaired mitochondrial function. However, abnormal expression of these factors could be reversed after treatment with AS-IV, and excessive mitochondrial autophagy could also be reversed, thus restoring the regulatory function of mitochondria. However, AS-IV-adjusted function was resisted after PINK1 knockdown.AS-IV is a potential drug for myasthenia gravis (MG), and its treatment mechanism is related to mediating mitophagy and restoring mitochondrial function through the PINK1/Parkin pathway." @default.
• W4328112920 created "2023-03-22" @default.
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• W4328112920 date "2023-05-01" @default.
• W4328112920 modified "2023-09-30" @default.
• W4328112920 title "PINK1/Parkin pathway-mediated mitophagy by AS-IV to explore the molecular mechanism of muscle cell damage" @default.
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• W4328112920 doi "https://doi.org/10.1016/j.biopha.2023.114533" @default.
• W4328112920 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/36948131" @default.
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