m1A-依赖的TRMT6/61A-ARG2轴通过重塑瘤微环境来驱动原原老化
Tuoyang Li1,2,3,4,5, Mingzhe Huang1,2,3,4,5, Jinlin Cai1,2,3,4
1Department of General Surgery (Colorectal Surgery), The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|January 8, 2026
概括
细胞衰老通过与衰老相关的分泌表型 (SASP) 驱动癌症. 这项研究揭示了TRMT6/TRMT61A复合体通过增强特定蛋白质的翻译来驱动结直肠癌中的原瘤性SASP.
科学领域:
- 分子生物学分子生物学
- 癌症生物学 癌症生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 细胞衰老是衰老的标志,在癌症中起着促进瘤的作用.
- 与衰老相关的分泌表型 (SASP) 驱动癌症恶性.
- 管理亲瘤性SASP生产的机制尚不清楚.
研究的目的:
- 为了揭示SASP在结直肠癌 (CRC) 中的表皮转录组调节.
- 研究TRMT6/TRMT61A复合体在驱动衰老和SASP中的作用.
- 阐明TRMT6/61A介导的SASP中涉及的下游信号通路.
主要方法:
- 在CRC.中研究了TRMT6/TRMT61A复合体和m1A修饰.
- 分析了tRNA翻译效率和蛋白质合成.
- 研究了mTOR和NF-κB信号通路的激活.
- 评估SASP对瘤微环境的影响.
主要成果:
- TRMT6/TRMT61A复合体的异常升高导致CRC细胞的衰老.
- TRMT6/61A依赖的m1A修饰增强了特定tRNA的翻译,促进了ARG2合成.
- ARG2的积累激活了mTOR和NF-κB,建立了一个亲瘤的SASP.
- SASP重新编程瘤微环境,促进癌细胞生长,侵入性,CAF激活和M2巨细胞两极分化.
结论:
- 这条TRMT6/61A-ARG2通路以一种m1A-依赖的方式驱动着前瘤衰老.
- 这项研究揭示了一种新的转化控制层在与衰老相关的病理学.
- 这些发现为开发针对这种途径的老态疗法提供了理由.
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