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GPR15在结肠癌的发展和抗瘤免疫反应中的作用

Hong Namkoong¹, Bomi Lee^1,2, Gayathri Swaminathan¹

¹Division of Gastroenterology and Hepatology, Department of Medicine, School of Medicine, Stanford University, Stanford, CA, United States.

Frontiers in oncology

|December 11, 2023

概括

化学吸引剂受体G蛋白结合受体15 (GPR15) 通过促进抑制瘤的免疫微环境,在结肠癌中起着保护作用. 准GPR15-GPR15L轴为结直肠癌 (CRC) 提供了一个新的治疗策略.

科学领域:

免疫学免疫学免疫学
在瘤学瘤学.
胃肠病学胃肠病学

背景情况:

已知G蛋白结合受体15 (GPR15) 促进T细胞向结肠转移.
GPR15在结肠癌中的作用尚未得到广泛研究.
了解GPR15在结直肠癌中的作用对于开发新的治疗策略至关重要.

研究的目的:

研究GPR15在结肠癌中的作用.
探索GPR15-GPR15L轴作为CRC的潜在治疗点.
分析GPR15对结肠癌中瘤免疫微环境的影响.

主要方法:

人类CRC组织和外科边缘通过流细胞计分析免疫细胞透和GPR15表达.
在GPR15缺乏 (KO) 和充足 (Het) 的小鼠中,使用氧甲 (AOM) 和硫酸 (DSS) 诱导结肠癌.
在小鼠模型中评估了瘤负担和免疫细胞概况,包括使用GPR15L给药的MC38-CRC模型.

主要成果:

与健康边缘相比,在人类CRC瘤中观察到较低的GPR15+免疫细胞频率.
在AOM/DSS模型中,小鼠的GPR15缺乏导致多的增加,生存率的降低和免疫细胞透的改变 (CD8+ T细胞减少,IL-17+ T细胞增加).
在已建立的MC38-CRC瘤中,GPR15L的使用增加了免疫细胞的透,增强了T细胞效应因子的功能,并减少了瘤负担.

结论:

GPR15在结肠癌中起着重要的瘤抑制作用.
GPR15-GPR15L轴调节瘤免疫微环境,促进抗瘤免疫力.
GPR15及其连接体GPR15L是结直肠癌的一个有希望的,结直肠特异性的治疗点.

关键词:

在 GPR15 中使用.在GPR15L中使用.在T细胞,T细胞.结肠癌是什么意思结肠癌是什么意思瘤微环境是一个微环境.

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