巨细胞物理相互作用调节IFN-γ分泌
Kolade Adebowale1,2, Zerin Mahzabin Khan1,3, Daniel E Michaud4,5
1School of Engineering & Applied Sciences, Harvard University, Allston, Massachusetts 02134, United States.
ACS applied materials & interfaces
|September 1, 2025
概括
巨细胞与T细胞之间的身体接触会增强免疫反应. 这种相互作用促进干扰素- (IFN-γ) 分泌和PD- L1表达,这对T细胞活性和癌症免疫力至关重要.
科学领域:
- 免疫学
- 细胞生物学
- 生物材料科学
背景情况:
- 巨细胞和T细胞通过生化和物理相互作用进行交流.
- 巨细胞和T细胞的接近与癌症结果有关, 表明身体接触会影响细胞行为.
- 对这些免疫细胞之间的身体接触的作用缺乏系统的研究.
研究的目的:
- 研究原始巨细胞与激活的CD8+T细胞之间的物理接触的作用.
- 开发3D培养模型来研究细胞之间的相互作用.
- 了解物理相互作用如何调节免疫细胞表型和活动.
主要方法:
- 使用Matrigel开发了三维 (3D) 培养试验.
- 将直接接触条件与分离 (Transwell) 条件进行比较.
- 量化T细胞迁移和测量细胞因子分泌 (IFN-γ) 和细胞表面标记物表达 (ICAM-1,PD-L1).
主要成果:
- T细胞表现出改变的迁移,停止和与巨细胞相互作用.
- 身体接触导致IFN-γ分泌量增加了3倍.
- 接触诱导了ICAM-1的2倍升高和PD-L1表达的增加,由JAK信号传递介导.
结论:
- 巨细胞和T细胞之间的物理接触是它们功能的一个关键决定因素.
- 激活的T细胞与巨细胞接触,增加IFN-γ和PD-L1的产生.
- 3D生物材料模型可以为免疫反应操纵提供细胞相互作用的机械洞察力.
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