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通过通过IFN-γ诱导的I型干扰素反应网络通过IRF7提升Th17衍生的Th1细胞的抗瘤疗效

Xiaoyi Lei¹, Ruipei Xiao¹, Zhe Chen¹

¹Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Guangdong Provincial Key Laboratory of Single Cell Technology and Application, Southern Medical University, Guangzhou, Guangdong 510515, China.

Proceedings of the National Academy of Sciences of the United States of America

|November 14, 2024

概括

CD4+ T辅助细胞17和1 (Th171) 显示出强大的抗瘤活性. 这些细胞在Th17条件下进行原始化,然后转化为IFN-γ生产者,通过改善瘤细胞根除来增强癌症免疫疗法.

科学领域:

免疫学免疫学免疫学
癌症生物学癌症生物学
细胞免疫学细胞免疫学

背景情况:

CD4+ T 细胞在癌症免疫治疗中至关重要.
一个CD4+T细胞子集共表达T辅助体1型 (Th1) 和T辅助体17 (Th17) 标记物 (Th171细胞) 显示出显著的抗瘤潜力.
Th171细胞的分化和抗瘤机制尚未完全理解.

研究的目的:

研究Th171细胞的分化途径和抗瘤机制.
建立一个用于Th171细胞生成和研究的体外模型.
评估Th171细胞和基于Th171的化学抗原受体T (CAR-T) 细胞在固体瘤中的治疗潜力.

主要方法:

重新分析单细胞RNA测序 (scRNA-seq) 数据以识别瘤中的Th171细胞.
轨迹分析以确定Th171细胞分化的途径.
在体外建立Th171细胞培养和转录基因分析.
在体内评估Th171和Th171-CAR-T细胞对固体瘤的疗效.
研究干扰素- (IFN-γ) 和细胞外矩阵蛋白1 (ECM1) 在Th171细胞功能中的作用.

主要成果:

在瘤中确定了Th171细胞,从Th17原始细胞分化为IFN-γ生产者.
在体外生成的Th171细胞与瘤透的同类细胞非常相似.
与Th1或Th17细胞相比,Th171细胞表现出优异的抗瘤反应.
Th171-CAR-T细胞显示增强了固体瘤的根除.
Th171细胞表现出早期枯竭,但保留了干性,迁移速度更快,瘤积累取决于ECM1.
IFN-γ促进了I型干扰素反应和ECM1表达,同时通过IRF7上调来减少Th171细胞的疲劳.

结论:

Th171细胞代表了增强癌症免疫疗法的有希望的子集.
了解Th171细胞的分化和调节机制可以优化它们的治疗应用.
涉及Th171细胞的有针对性的策略有可能改善固体恶性瘤的结果.

关键词:

帮助性T细胞是帮助性T细胞.收养细胞转移的收养细胞转移疲疲疲疲疲瘤免疫疗法免疫疗法第一种类型的干扰子通路.

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