细胞应激通过内源性原原体和布提罗菲林复合体动态激活了γ9δ2 T细胞
Yiming Jin1, Khiem Nguyen1, Sidra Bashir1
1Department of Pharmaceutical Sciences, Division of Medicinal Chemistry, University of Connecticut, Storrs, CT 06269, USA.
Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie
|January 23, 2026
概括
轻度的寒冷压力通过内源性原原原体 (pAgs) 结合布罗菲林 (BTN) 蛋白激活Vγ9Vδ2 T细胞. 这种新的淋巴细胞应激监测途径突出了BTN家族角色和T细胞受体参与的间隔.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
背景情况:
- 素原蛋白 (pAgs) 是一种免疫刺激分子,它与丁基素3 (BTN3) 结合,激活Vγ9Vδ2 T细胞.
- 调节pAg水平和T细胞激活的确切条件尚不清楚.
研究的目的:
- 研究一种新型的应激诱导途径,用于内源性pAg检测和Vγ9Vδ2T细胞激活.
- 阐明Butyrophilin家族成员在这种应激反应中的作用.
主要方法:
- 在细胞模型中诱导轻度冷应激.
- 抑制HMG-CoA还原酶以阻止pAg的产生.
- 特定的BTN家族成员的耗尽 (BTN3A1).
- 使用杂交蛋白质对BTN蛋白质二重化和多重化进行分析.
主要成果:
- 轻度的寒冷压力会触发内源性pAgs通过BTN家族蛋白激活γ9δ2T细胞.
- 这种反应依赖于pAgs和BTN3A1,并由BTN3A2/BTN3A3.3增强.
- BTN2A1,BTN3A1和BTN3A3具有不同的二元化特性.
- BTN2A1和BTN3A1的特定间距和多元化对于γ9δ2T细胞受体参与至关重要.
结论:
- 一种新的淋巴细胞应激监测途径通过冷应激诱导的pAgs和BTN蛋白激活γ9δ2T细胞.
- 甲酸途径中间体和BTN家族成员相互作用是T细胞激活过程的关键调节者.
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