通过PAICS乙化,ACSS2通过限制精氨酸生物合成来驱动与衰老相关的分泌表型
Li Yang1, Jianwei You2, Xincheng Yang1
1Research and Innovation Center, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Human Phenome Institute, Zhangjiang Fudan International Innovation Center, Fudan University, Shanghai, 201203, China.
Nature communications
|February 28, 2025
概括
这项研究表明,ACSS2抑制会抑制与衰老相关的分泌表型 (SASP) 和其有害影响. ACSS2通过控制PAICS乙化来调节SASP,影响 purin代谢和细胞功能.
科学领域:
- 细胞衰老 细胞衰老
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 代谢过程中的代谢.
背景情况:
- 衰老相关的分泌表型 (SASP) 驱动着衰老疾病.
- ACSS2产生乙-CoA,并影响基因表达.
- ACSS2在细胞衰老中的作用尚不清楚.
研究的目的:
- 研究ACSS2在细胞衰老中的作用.
- 确定ACSS2是否对SASP进行监管.
- 探索ACSS2作为治疗老化相关疾病的治疗点.
主要方法:
- 药理上抑制了ACSS2.2. 的作用.
- 在小鼠中删除Acss2的基因.
- 对SASP标记物的分析.
- 研究蛋白质-蛋白质相互作用和翻译后修改 (乙化).
- 评估精氨酸代谢和DNA修复能力.
主要成果:
- 抑制/删除ACSS2可以减少SASP.
- ACSS2直接乙化PAICS,这是一个 purin生物合成酶.
- 乙化PAICS经历了自介导的降解,限制了纯素代谢.
- 减少的纯素代谢会损害DNA修复,并增加SASP.
- 抑制ACSS2会废除衰老细胞的前瘤和免疫监测功能.
结论:
- 通过PAICS乙化,ACSS2将乙-CoA生成与 purin代谢联系在一起,控制SASP.
- ACSS2是衰老细胞功能的关键调节者.
- ACSS2是一种潜在的老化标,可以对抗与衰老相关的疾病.
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