Regulation of FOXO Factors in Mammalian Cells.

Regulation of FOXO Factors in Mammalian Cells.
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DOI:
10.1016/bs.ctdb.2017.10.006
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发表时间:
2018
影响因子:
--
通讯作者:
Webb AE
Webb AE
中科院分区:
生物学2区
文献类型:
--
作者:
Brown AK;Webb AE

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叉头盒O (FOXO)转录因子是细胞内稳态的中心调节因子。foxo响应广泛的外部刺激,包括生长因子信号、氧化应激、基因毒性应激和营养剥夺。这些信号输入通过许多翻译后修饰,包括磷酸化、乙酰化、泛素化和甲基化来调节FOXOs。共价修饰可以影响定位、DNA结合以及与细胞中其他辅助因子的相互作用。FOXOs整合各种修饰来调节细胞类型特异性基因表达程序,这些程序对代谢稳态、氧化还原平衡和应激反应至关重要。总之,这些功能对于协调对环境波动的反应至关重要,从而在发育过程中维持细胞稳态并支持健康衰老。
Forkhead box O (FOXO) transcription factors are central regulators of cellular homeostasis. FOXOs respond to a wide range of external stimuli, including growth factor signaling, oxidative stress, genotoxic stress, and nutrient deprivation. These signaling inputs regulate FOXOs through a number of posttranslational modifications, including phosphorylation, acetylation, ubiquitination, and methylation. Covalent modifications can affect localization, DNA binding, and interactions with other cofactors in the cell. FOXOs integrate the various modifications to regulate cell type-specific gene expression programs that are essential for metabolic homeostasis, redox balance, and the stress response. Together, these functions are critical for coordinating a response to environmental fluctuations in order to maintain cellular homeostasis during development and to support healthy aging.
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