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METTL5通过化学基因mRNA翻译调节使肝癌的免疫逃避成为可能

Shuang Li¹, Xiao Zhao², Tongtong Song¹

¹Department of Liver Surgery, Center of Hepato-Pancreato-Biliary Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510080, China.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)

|December 23, 2025

概括

METTL5是一种18SrRNA甲基转移酶,通过抑制CD8+T细胞促进肝癌. 它的抑制增强了抗瘤免疫力,并改善了肝脏内胆管癌 (ICC) 的免疫治疗反应.

科学领域:

免疫学免疫学免疫学
在瘤学瘤学.
分子生物学分子生物学

背景情况:

肝脏的微环境极大地影响免疫监测和肝癌的进展.
18S rRNA m6A甲基转移酶METTL5在癌症中起作用,但其在肝脏免疫微环境中的功能尚不清楚.

研究的目的:

研究METTL5在调节肝脏免疫微环境和促进肝脏内胆管癌 (ICC) 进展中的作用.
探索METTL5作为ICC的潜在治疗点.

主要方法:

肝脏特定的Mettl5淘汰赛 (cKO) 鼠标模型.
单细胞RNA测序 (scRNA-seq) 和单细胞T细胞受体测序 (scTCR-seq).
免疫细胞的采用转移和治疗干预 (siRNA,PD-1阻断).

主要成果:

Mettl5淘汰会增加CD8+T细胞的透,并抑制ICC的进展.
人类ICC中低METTL5表达与CD8+T细胞增加,巨细胞减少和更好的生存相关.
METTL5降低了CXCL16的翻译,阻碍了CD8+T细胞的排斥.
结合METTL5向和PD-1阻断,消除了ICC瘤,并增强了免疫治疗反应.

结论:

METTL5通过调解免疫逃避,主要通过抑制CD8+T细胞透来促进ICC.
向METTL5可以增强抗瘤免疫力,也是ICC的一种有前途的治疗策略.
METTL5是ICC患者免疫治疗反应的潜在生物标志物.

关键词:

在METTL5中,使用的是METTL5.抗瘤免疫力抗瘤免疫力在mRNA的翻译过程中,mRNA的翻译 rRNA m6A 的修改.

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