人类T细胞上的酸甘减弱了通过Fas通路执行的死亡程序
bioRxiv : the preprint server for biology
|September 26, 2025
概括
在T细胞上的酸甘氨酸通过抑制Fas受体活性来调节编程细胞死亡. 这一发现突显了T细胞糖核糖体在免疫调节和治疗潜力的作用.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 葡萄糖生物学 葡萄糖生物学
背景情况:
- T细胞是适应性免疫的关键,其持久性由编程的细胞死亡途径调节.
- 瘤亡因子 (TNF) 受体超级家族成员调解细胞死亡,它们的功能可以通过sialoglycans调节.
- 众所周知,细胞死亡受体上的糖类减弱了细胞亡功能,作为癌症中的生存机制,但它们在T细胞中的作用尚不清楚.
研究的目的:
- 为了研究酸甘在调节人类T细胞编程细胞死亡中的作用.
- 探索糖缺乏对Fas受体 (FasR) 活性和相关信号通路的影响.
- 为了确定sialoglycans是否是T细胞死亡的免疫生理学调节者.
主要方法:
- 使用了不朽化 (Jurkat) 和缺少西阿基甘的初级人类T细胞.
- 由Fas受体 (FasR),TNFR1和TRAIL-R1.1诱导的评估的亡.
- 分析了FasR的动态重组,并使用了蛋白组学来研究信号通路.
- 在初级人类T细胞上使用了酸分裂酶 (sialidase).
主要成果:
- 细胞的酸糖特别抑制了Fas受体诱导的亡,但并没有抑制TNFR1或TRAIL-R1.
- 糖缺乏增加了FasR的动态重组,表明糖类限制受体聚类.
- 丢失的sialoglycans负面调节了支持生存的MAPK/ERK信号通路.
- 化治疗证实了化作为FasR驱动的细胞死亡的调节剂在初级T细胞.
结论:
- 在T细胞上的锡阿洛甘是Fas受体介导的编程细胞死亡的关键调节者.
- 通过Fas通路,T细胞的葡萄糖体,特别是糖体,会影响细胞命运的决定.
- 这些发现为了解葡萄糖的免疫调节作用及其在基于T细胞的疗法中的治疗潜力提供了基础.
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