巨细胞中的乌比奎丁结合酶Ubc13通过抑制PD-L1表达抑制肺瘤进展

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Siying Sun^1,2, Jun Ni¹, Jiamin Liu¹

¹Center for Immune-Related Diseases at Shanghai Institute of Immunology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.

European journal of immunology

|December 23, 2024

概括

巨细胞中的乌比奎丁结合酶Ubc13抑制了肺瘤的生长. 在髓状细胞中删除Ubc13通过损害T细胞功能和促进免疫抑制来加速瘤的进展.

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:

瘤细胞内在的ubiquitin-conjugating酶 Ubc13 (UBC13) 促进瘤发生.
在瘤进展过程中,UBC13在免疫细胞区中的作用尚不清楚.

研究的目的:

研究UBC13在髓状细胞中调节肺瘤进展中的作用.
阐明巨细胞中UBC13影响瘤微环境和抗瘤免疫的潜在机制.

主要方法:

在小鼠 (Ubc13^fl/flLyz2^Cre) 中利用了骨髓细胞特异性删除UBC13.
分析了瘤生长,CD8+ T淋巴细胞增殖和效应器功能,以及骨髓系衍生的抑制细胞透.
研究了分子机制,包括Arg1和PD-L1表达,K63相关的多基化和Akt激活.

主要成果:

骨髓细胞特异性删除UBC13加速了移植的肺瘤的生长.
携带瘤的Ubc13^fl/flLyz2^Cre小鼠表现出降低了CD8+T细胞功能,并增加了髓质衍生抑制细胞.
缺乏UBC13可提高Arg1和PD-L1的调节,这与K63相关的多基化减少和Akt激活增加有关,促进前瘤两极分化和免疫抑制.

结论:

巨内在的UBC13抑制了肺瘤的进展.
在巨细胞中激活UBC13为肺癌提供了潜在的免疫治疗策略.

关键词:

肺癌是一种肺癌.在PD-L1中.在UBC13中,UBC13是什么?免疫疗法免疫疗法巨细胞是一个巨细胞.

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