在瘤细胞表达的VISTA受m6A的调节,并通过NSCLC的STAT3/CCL22影响免疫微环境
Hao Xu1,2, Kaikai Shen3, Bei Jiang4
1Department of Respiratory and Critical Care Medicine, Jinling Hospital, Nanjing Medical University, Nanjing, China.
Journal of translational medicine
|October 2, 2025
概括
在非小细胞肺癌细胞上的V-域免疫球蛋白抑制T细胞激活 (VISTA) 表达受到m6A修饰的调节. 这增强了CD8+ T细胞的反应,减少了免疫抑制,提供了一个新的免疫治疗点.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 在瘤学瘤学.
背景情况:
- 免疫疗法对于非小细胞肺癌 (NSCLC) 治疗至关重要.
- 免疫逃避仍然是NSCLC治疗的一个重大挑战.
- 了解瘤免疫微环境调节对于提高免疫疗法疗效至关重要.
研究的目的:
- 调查N6-甲基氨酸 (m6A) 相关分子在NSCLC免疫治疗中的作用.
- 在瘤免疫微环境中阐明V-域免疫球蛋白抑制T细胞激活 (VISTA) 的调节机制.
- 探索VISTA在T细胞激活,招募和免疫抑制中的功能.
主要方法:
- 在GSE126044数据集上进行差异表达分析,加权基因同表达网络分析 (WGCNA) 和拉索-考克斯回归.
- 使用m6A点滴,MeRIP,RNA下拉和RNA稳定性试验验 m6A修饰的验证.
- 评估VISTA对瘤细胞行为的影响和体内验证.
主要成果:
- V-域免疫球蛋白抑制T细胞激活 (VISTA) 表达受到m6A修饰的调节,由METTL3增强,并被YTHDF1.1识别.
- 在瘤细胞上增加VISTA可增强CD8+T细胞细胞毒性,并通过JAK/STAT通路减轻免疫抑制.
- 维斯塔的过度表达减少了调控性T细胞 (Treg) 招募,并增强了抗瘤免疫力.
结论:
- 维斯塔通过调节T细胞反应和免疫抑制,在NSCLC免疫治疗中发挥关键作用.
- 维斯塔作为一个免疫检查点,并调节CD8+T细胞和Treg在瘤细胞上的招募.
- 向瘤细胞上的VISTA表达是一种增强NSCLC免疫疗法的有希望的策略.
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