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论文题目: STAT3 Undergoes Acetylation-dependent Mitochondrial Translocation to Regulate Pyruvate Metabolism
英文论文题目: STAT3 Undergoes Acetylation-dependent Mitochondrial Translocation to Regulate Pyruvate Metabolism
第一作者: Xu, YS; Liang, JYJ; Wang, YM; Zhao, XZJ; Xu, L; Xu, YY; Zou, QLC; Zhang, JXM; Tu, CE; Cui, YG; Sun, WH; Huang, C; Yang, JH; Chin, YE
英文第一作者: Xu, YS; Liang, JYJ; Wang, YM; Zhao, XZJ; Xu, L; Xu, YY; Zou, QLC; Zhang, JXM; Tu, CE; Cui, YG; Sun, WH; Huang, C; Yang, JH; Chin, YE
联系作者: Chin, YE (reprint author), Chinese Acad Sci, Shanghai Inst Biol Sci, Inst Hlth Sci, Key Lab Stem Cell Biol, 320 Yueyang Rd, Shanghai 200031, Peoples R China.
英文联系作者: Chin, YE (reprint author), Chinese Acad Sci, Shanghai Inst Biol Sci, Inst Hlth Sci, Key Lab Stem Cell Biol, 320 Yueyang Rd, Shanghai 200031, Peoples R China.
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发表年度: 2016
卷: 6
期:
页码: 39517
摘要: Cytoplasmic STAT3, after activation by growth factors, translocates to different subcellular compartments, including nuclei and mitochondria, where it carries out different biological functions. However, the precise mechanism by which STAT3 undergoes mitochondrial translocation and subsequently regulates the tricarboxylic acid (TCA) cycle-electron transport chain (ETC) remains poorly understood. Here, we clarify this process by visualizing STAT3 acetylation in starved cells after serum reintroduction or insulin stimulation. CBP-acetylated STAT3 undergoes mitochondrial translocation in response to serum introduction or insulin stimulation. In mitochondria, STAT3 associates with the pyruvate dehydrogenase complex E1 (PDC-E1) and subsequently accelerates the conversion of pyruvate to acetyl-CoA, elevates the mitochondrial membrane potential, and promotes ATP synthesis. SIRT5 deacetylates STAT3, thereby inhibiting its function in mitochondrial pyruvate metabolism. In the A549 lung cancer cell line, constitutively acetylated STAT3 localizes to mitochondria, where it maintains the mitochondrial membrane potential and ATP synthesis in an active state.
英文摘要: Cytoplasmic STAT3, after activation by growth factors, translocates to different subcellular compartments, including nuclei and mitochondria, where it carries out different biological functions. However, the precise mechanism by which STAT3 undergoes mitochondrial translocation and subsequently regulates the tricarboxylic acid (TCA) cycle-electron transport chain (ETC) remains poorly understood. Here, we clarify this process by visualizing STAT3 acetylation in starved cells after serum reintroduction or insulin stimulation. CBP-acetylated STAT3 undergoes mitochondrial translocation in response to serum introduction or insulin stimulation. In mitochondria, STAT3 associates with the pyruvate dehydrogenase complex E1 (PDC-E1) and subsequently accelerates the conversion of pyruvate to acetyl-CoA, elevates the mitochondrial membrane potential, and promotes ATP synthesis. SIRT5 deacetylates STAT3, thereby inhibiting its function in mitochondrial pyruvate metabolism. In the A549 lung cancer cell line, constitutively acetylated STAT3 localizes to mitochondria, where it maintains the mitochondrial membrane potential and ATP synthesis in an active state.
刊物名称: SCIENTIFIC REPORTS
英文刊物名称: SCIENTIFIC REPORTS
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学科: Multidisciplinary Sciences
英文学科: Multidisciplinary Sciences
影响因子: 4.259
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论文类别: Article
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