细胞外囊泡作为单细胞和巨细胞在瘤中的功能的调节器
Palloma P Almeida1,2,3, João Alfredo Moraes2, Thereza Christina Barja-Fidalgo3
1Universidade Federal Fluminense, Departamento de Biologia Celular e Molecular, Instituto de Biologia, Laboratório de Inflamação e Metabolismo, Rua Professor Marcos Waldemar de Freitas Reis, s/n, 24020-140 Niterói, RJ, Brazil.
Anais da Academia Brasileira de Ciencias
|June 26, 2024
概括
来自瘤的细胞外囊泡 (EVs) 将单细胞重新编程成与瘤相关的巨细胞. 这些EVs通过改变单细胞功能和细胞因子表达来促进免疫抑制瘤微环境 (TME).
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 细胞生物学 细胞生物学
背景情况:
- 瘤微环境 (TME) 包含多种细胞,包括瘤细胞,免疫细胞和非免疫细胞.
- 在TME内部的细胞通信通过细胞与细胞接触,细胞因子,化学因子和细胞外囊泡 (EVs) 发生.
- 来自瘤的EV可以调节免疫反应,影响TME内的免疫细胞行为.
研究的目的:
- 研究瘤衍生的EVs在调节单细胞分化和功能中的作用.
- 了解瘤衍生的EV如何导致免疫抑制性TME.
- 阐明EVs影响单细胞到巨细胞分化的机制.
主要方法:
- 在TME中分析细胞相互作用.
- 在瘤衍生的EV中分子载荷的表征.
- 评估EV暴露后单细胞分化和表型变化.
- 在受影响的单细胞中评估细胞因子和分子表达.
主要成果:
- 瘤细胞将单细胞吸引到TME.
- 来自瘤的EV诱导单细胞分化成具有瘤前型的瘤相关巨细胞 (TAM).
- EVs传输特定的分子和信号因子,改变单细胞功能.
- EVs促进单细胞表达细胞因子和其他分子,促进免疫抑制的TME.
结论:
- 来自瘤的EV是TME内重编程单细胞的关键调解者.
- 在建立免疫抑制瘤微环境方面,EVs起着至关重要的作用.
- 针对EV介导的通信,在癌症治疗中呈现出一种潜在的治疗策略.
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