瘤细胞衰老诱导的巨细胞CD73表达是衰老瘤微环境中的关键代谢免疫检查点
Yue Deng1,2,3, Qinyan Chen1,2,3, Xiao Yang1,2,3
1Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.
Theranostics
|February 7, 2024
概括
在瘤微环境 (TME) 中的细胞衰老通过诱导瘤相关巨细胞 (TAM) 上的CD73来提高腺. 向CD73可以增强抗瘤免疫力,为衰老瘤提供一种新的治疗策略.
科学领域:
- 免疫学 免疫学 免疫学
- 代谢途径 代谢途径
- 癌症研究 癌症研究
背景情况:
- 细胞衰老是由放射治疗和化疗等疗法诱导的,在瘤微环境 (TME) 中起着复杂的作用.
- 瘤细胞通过分泌的代谢物对免疫细胞进行代谢性重编程,但衰老细胞对TME代谢的影响尚未完全理解.
- 了解这些代谢变化对于开发增强抗瘤免疫力的策略至关重要.
研究的目的:
- 为了研究老化的细胞对TME的代谢重塑.
- 从代谢的角度来看,确定特定的分子标来增强衰老细胞诱导的抗瘤免疫力.
主要方法:
- 诱导细胞衰老in vivo和in vitro使用放射治疗和西斯.
- 用于代谢物查的瘤间歇性液体上的代谢学分析和ELISA.
- 流细胞测量用于免疫细胞透,RNA测序和单细胞转录组分析,用于机制和临床验证.
主要成果:
- 在衰老的TME中发现了一个独特的代谢格局,其特点是腺水平升高.
- 衰老的瘤细胞诱导CD73在瘤相关巨细胞 (TAMs) 上调节,由IL-6和JAK/STAT3途径介导.
- 在衰老的TME中阻断CD73抑制了瘤生长,并增强了CD8+ T细胞介导的抗瘤免疫力.
结论:
- 在TAM中CD73的上调是老化TME中腺积累的关键机制.
- 向CD73代表了一种新的协同作用的抗瘤策略,特别是在治疗诱导衰老的背景下.
- 这种方法对增强老化瘤微环境中的抗瘤免疫力具有前景.
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