STAT3 Undergoes Acetylation-dependent Mitochondrial Translocation to Regulate Pyruvate Metabolism.
STAT3 Undergoes Acetylation-dependent Mitochondrial Translocation to Regulate Pyruvate Metabolism.
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STAT3 经历乙酰化依赖性线粒体易位来调节丙酮酸代谢
DOI:
10.1038/srep39517
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发表时间:
2016-12-22
影响因子:
4.6
通讯作者:
Chin YE
中科院分区:
文献类型:
--
作者:
Xu YS;Liang JJ;Wang Y;Zhao XJ;Xu L;Xu YY;Zou QC;Zhang JM;Tu CE;Cui YG;Sun WH;Huang C;Yang JH;Chin YE
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.
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影响因子:
7.7
作者:
Li L;Pan R;Li R;Niemann B;Aurich AC;Chen Y;Rohrbach S
通讯作者:
Rohrbach S
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影响因子:
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Goetzman ES
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Cooper, CS