缺少SIRT3会减少PFKFB3驱动的T细胞糖解,并促进关节炎炎症
Ting-Ting Wang1,2,3,4, Taotao Han2,5, Xinyue Xiao6
1Clinical Biobank, Institute of Clinical Medicine, National Infrastructures for Translational Medicine, State Key Laboratory of Complex, Severe, and Rare Diseases, Peking Union Medical College Hospital, Beijing, China.
Science China. Life sciences
|March 3, 2025
概括
赛尔图因3 (SIRT3) 缺乏会损害T细胞糖解和ATP的产生,恶化小鼠的类风湿性关节炎 (RA) 和抗原诱导性关节炎 (AIA). 恢复PFKFB3表达可以减轻这些影响.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞的新陈代谢
- 生物化学 生物化学
背景情况:
- 细胞代谢对细胞功能至关重要,异常的T细胞代谢与类风湿性关节炎 (RA) 病变产生有关.
- 脱乙酶Sirtuin 3 (SIRT3) 调节非免疫细胞中的能量代谢,但其在T细胞和RA中的作用仍然未知.
研究的目的:
- 研究SIRT3在T细胞代谢中的作用及其对类风湿性关节炎 (RA) 的贡献.
- 在抗原诱导性关节炎 (AIA) 的背景下,确定SIRT3缺乏对T细胞糖解,ATP产生和亡的影响.
主要方法:
- 利用SIRT3淘汰赛小鼠和野生型 littermates 来研究抗原诱导性关节炎 (AIA).
- 评估了T细胞糖解,ATP产生,细胞亡以及关键的糖解酶如PFKFB3.3的表达.
- 研究了PFKFB3过度表达对SIRT3缺乏的T细胞的影响.
主要成果:
- 缺少SIRT3会抑制T细胞糖解并降低ATP的产生.
- 在AIA模型中,SIRT3淘汰的小鼠表现出恶化的关节炎,软骨侵蚀和炎症.
- 由于SIRT3缺乏,导致6-果糖-2-激酶/果糖-2,6-双酸酶3 (PFKFB3) 的表达减少.
- 过度表达PFKFB3挽救了受损的ATP生产,并保护SIRT3缺乏细胞中的T细胞免受亡.
结论:
- SIRT3在调节T细胞代谢,特别是糖解中发挥着至关重要的作用.
- 缺少SIRT3促进RA的发病因子通过损害T细胞代谢,增加细胞亡,并加剧关节炎.
- 向SIRT3或PFKFB3可能为RA提供治疗策略.
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