视网氨酸将母细胞重新编程到一种促炎状态,以增强抗瘤免疫力
Lizao Zhang1,2, Siqi Ren1,2, Yuhui Li2,3
1Department of Oral and Maxillofacial Surgery, Sun Yat-sen Memorial Hospital of Sun Yat-sen University, Guangzhou, 510120, China.
研究人员确定了一种对抗瘤免疫力至关重要的亲炎性乳腺细胞 (PMC) 种群. 网红酸信号驱动PMC两极化,增强T细胞反应,改善各种癌症的临床结果.
科学领域:
- 免疫学 免疫学 免疫学
- 癌症生物学 癌症生物学
- 分子瘤学分子瘤学
背景情况:
- 乳腺细胞在瘤微环境中具有复杂的作用,但它们在癌症中的多样性尚不清楚.
- 了解巨细胞异质性是开发新型癌症免疫疗法的关键.
研究的目的:
- 绘制人类癌症中乳腺细胞的转录和空间多样性的地图.
- 识别巨细胞子集及其在瘤微环境中的功能作用.
主要方法:
- 整合了十种癌症类型的单细胞RNA测序和空间转录组学.
- 进行了机械分析,以阐明调节巨细胞功能的信号通路.
主要成果:
- 鉴定出一种具有抗原呈现性和免疫激活性质的独特的亲炎性巨细胞 (PMC) 群体.
- 发现通过RARα的视网膜酸 (RA) 信号驱动PMC极化,增强MHC-II和CXCL16的表达.
- 表明,较高的PMC丰度与多种癌症类型的更好的临床结果相关.
结论:
- RA-RARα-CIITA信号传递对于将巨细胞重新编程为抗瘤表型至关重要.
- 对PMC的药理诱导可能是一个有前途的策略,以提高抗瘤免疫力.
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