化疗诱导骨髓驱动的空间T细胞疲劳在卵巢癌的卵巢癌
Inga-Maria Launonen1, Erdogan Pekcan Erkan1, Iga Niemiec1
1Research Program in Systems Oncology, University of Helsinki, Helsinki, Finland.
bioRxiv : the preprint server for biology
|April 2, 2024
概括
化疗重塑卵巢癌瘤的微环境,导致T细胞耗尽. 结合免疫疗法和化疗可以通过提高CD8+T细胞活性来增强抗瘤免疫力.
科学领域:
- 在瘤学瘤学.
- 免疫学 免疫学 免疫学
- 癌症生物学 癌症生物学
背景情况:
- 瘤微环境 (TME) 在高度血清卵巢癌 (HGSC) 的进展和治疗反应中发挥着关键作用.
- 了解化学疗法引起的TME变化对于开发有效的免疫疗法至关重要.
研究的目的:
- 为了研究化疗后高度血清性卵巢癌 (HGSC) 瘤微环境的时空重塑.
- 为了在治疗期间和治疗后确定TME内的免疫细胞动态和相互作用.
主要方法:
- 97个HGSC样本的综合空间和分子表征.
- 单细胞和空间转录组学.
- 对免疫细胞状态,骨髓状网络 (骨髓网) 和连接体-受体相互作用 (TIGIT-NECTIN2) 的分析.
- 功能性患者衍生免疫瘤学平台.
主要成果:
- 化疗诱导CD8+ T细胞的空间再分配和耗尽.
- 巨细胞通过在Myelonets中长时间呈现抗原,导致T细胞耗尽.
- 化疗对TIGIT-NECTIN2连接体-受体相互作用进行上调.
- 免疫检查点阻塞与化疗的结合增强了CD8+T细胞活性.
结论:
- 化疗触发了HGSC中的空间T细胞疲劳,由髓状细胞驱动.
- 针对这些机制为HGSC提供了新的免疫治疗策略.
- 释放CD8+T细胞介导的抗瘤免疫力是HGSC治疗的一个有希望的途径.
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