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Updated: Jul 26, 2025

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活性蛋白C调节T细胞代谢和通过α-甲酸通过表观遗传FOXP3诱导
Dheerendra Gupta1, Ahmed Elwakiel1, Satish Ranjan1
1Institute of Laboratory Medicine, Clinical Chemistry, and Molecular Diagnostics, University Hospital Leipzig, Leipzig University, Leipzig, Germany.
Blood advances
|June 14, 2023
概括
活性蛋白C (aPC) 通过改变T细胞代谢来调节适应性免疫力. 这一过程减少了谷氨酸和α-谷氨酸,促进了FOXP3+调节性T细胞 (Tregs),并减少了移植对宿主疾病.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞的新陈代谢
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 活性蛋白C (aPC) 直接调节适应性免疫力.
- aPC T 细胞的预化减少了小鼠的移植对宿主疾病.
- aPC影响T细胞的机制尚不清楚.
研究的目的:
- 通过改变T细胞代谢来研究aPC是否促进FOXP3+的表达.
- 阐明aPC在T细胞中诱导的代谢和表观遗传变化.
主要方法:
- 在体外T细胞分化试验 (混合淋巴细胞反应,α-CD3 / CD28刺激).
- 来自移植对宿主疾病和高血aPC水平的小鼠的T细胞的ex vivo分析.
- 对表观遗传标记,细胞代谢和基因表达的评估.
主要成果:
- aPC诱导FOXP3的表达,并减少CD4+CD25-细胞中的T辅助型1标记物.
- 增加FOXP3表达与减少的表观遗传标记物和Foxp3促进剂甲基化相关.
- aPC导致代谢静止,降低葡萄糖/谷氨酸吸收,并减少线粒体活动.
- 谷氨胺和α-甲酸的替代可以逆转aPC介导的效果.
结论:
- aPC调节T细胞代谢,降低谷氨胺和α-甲酸水平.
- 这种代谢转变改变了表观遗传标记,导致Foxp3脱甲基化和FOXP3诱导.
- aPC通过影响T细胞代谢和表观遗传学来促进类似Treg的表型.
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