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准肝细胞TβRI通过振兴类似干的CD8⁺Tex子集来改善肝转移的结果

Hao Wang^1,2, Yan Zhou¹, Yuanyu Tu¹

¹The Key Laboratory of Molecular Biology, State Administration of Traditional Chinese Medicine, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China.

Nature communications

|November 27, 2025

概括

破坏肝细胞中TGFβ信号传递会使耗尽的CD8+T细胞 (Tex) 恢复活力,以对抗结直肠肝转移. 这种方法可以增强抗瘤免疫力,并通过重编程T细胞来减少瘤负担.

科学领域:

免疫学免疫学免疫学
在瘤学瘤学.
肝病学肝病学是一种肝病学.

背景情况:

TGFβ信号传递是一个关键的免疫抑制途径.
干状CD8+耗尽的T细胞 (Tex) 对于抗瘤免疫至关重要.
肝转移中的TβRI升高与预后不佳相关.

研究的目的:

调查破坏肝细胞TGFβ信号是否可以增强CD8+Tex细胞以控制肝转移.
探索肝细胞TGFβ阻塞影响T细胞和转移的机制.

主要方法:

使用肝细胞特异性TβRI枯竭的小鼠来评估肝脏转移负担.
分析了瘤内CD8+T细胞的转录重编程.
与αPD-1一起的Galunisertib的治疗输送在体内进行了测试.

主要成果:

在多个模型中,肝细胞特异性TβRI耗尽减少了肝脏转移负担.
TβRI 阻塞抑制了 Galectin-9,将 CD8+ T 细胞从疲状态重编程到类似干细胞/效应细胞状态.
尼塞尔蒂布加上αPD-1通过转化耗尽的T细胞来协同抑制肝转移.

结论:

肝细胞TGFβ信号传递是针对肝转移的可准检查点.
通过肝细胞TGFβ阻断对耗尽的CD8+T细胞进行重新编程,可以增强抗瘤免疫力.
这一策略对治疗结直肠肝转移有前途.

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