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NAT10通过通过染色质关联tRNA调节p300/CBP活性来促进癌症转移

Ruhul Amin¹, Ngoc-Han Ha¹, Tinghu Qiu¹

¹Laboratory of Cancer Biology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA.

|December 4, 2025

概括

这项研究表明,NAT10蛋白的乙化对乳腺癌转移至关重要. 抑制NAT10通过改变基因表达和瘤免疫相互作用来减少肺转移.

科学领域:

分子生物学分子生物学
癌症研究癌症研究
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:

蛋白质和RNA乙化是细胞发育和癌症进展中的关键过程.
NAT10被确定为唯一的催化N4-乙基丁 (ac4C) 修饰RNA的酶.
NAT10在促进癌症进展中的确切作用需要进一步阐明.

研究的目的:

研究NAT10促进癌症进展的机制,特别关注其在转移中的作用.
探索NAT10与其他细胞成分的相互作用及其在乳腺癌模型中的功能后果.

主要方法:

利用全移植和基因工程小鼠模型的乳腺癌.
研究了NAT10与核毛孔复合物的相互作用.
评估了NAT10淘汰赛及其乙化活性对转移和基因表达的影响.
分析了染色素相关的tRNA和p300/CBP功能.

主要成果:

在小鼠模型中,NAT10乙化活性的丧失显著降低了肺转移.
NAT10淘汰导致染色质关联tRNA中ac4C修饰的丧失.
破坏ac4C修饰的tRNAs损害了p300/CBP功能,导致全基因组的染色质重组.
观察到改变的基因表达模式,影响转移促进的髓状细胞的招募.

结论:

NAT10在转移性乳腺癌细胞中调节增强剂活性方面发挥着重要作用.
NAT10通过调节基因表达来影响瘤与免疫相互作用,从而促进转移.
准NAT10可能为抑制乳腺癌转移提供治疗策略.

关键词:

乙化是指乙化的过程.在这种情况下,染色染色素增强剂是一种增强剂.转移转移转移转移中性粒细胞中性粒细胞.这是一个tRNARNA.转录转录是一种转录.瘤微环境是一个微环境.

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