在单酸盐诱导的急性痛风性关节炎中,PRDM1/SIRT2/NLRP3轴的促炎作用
Qingsong Zhao1, Nan Xia1, Jinmei Xu1
1Department of Endocrinology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, China.
Journal of innate immunity
|June 29, 2023
概括
含PR域1 (PRDM1) 通过抑制sirtuin 2 (SIRT2),增加NLRP3炎症酶激活和IL-1β释放,促进急性痛风性关节炎. 减少PRDM1的表达可以防止这种炎症状况.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 生物化学 生物化学
背景情况:
- 急性痛风性关节炎是一种痛苦的炎症状况,与单酸盐 (MSU) 水晶沉积有关.
- 指域 (PRDM1) 的PR域含有1在痛风发病的作用尚未完全理解.
- 炎症酶,特别是NLRP3,是痛风炎症的关键媒介.
研究的目的:
- 研究PRDM1在MSU引起的急性痛风性关节炎中的功能和机制.
- 为了探索PRDM1,sirtuin 2 (SIRT2) 和NLRP3炎症酶激活之间的关系.
主要方法:
- 来自痛风患者和健康对照组的单细胞分化为巨细胞.
- 分析PRDM1,SIRT2和NLRP3的表达,使用RT-qPCR和西欧斑块.
- 在实验室中使用MSU刺激巨细胞和在实验室中使用风湿关节炎的小鼠模型.
主要成果:
- 在急性痛风性关节炎患者中,PRDM1被上调,而SIRT2被下调.
- 抑制PRDM1降低了NLRP3炎症酶和IL-1β水平,减轻了炎症.
- 通过与其促进体结合,PRDM1直接抑制了SIRT2的表达.
- 在体内,PRDM1通过抑制SIRT2和激活NLRP3,加剧MSU诱导的关节炎.
结论:
- 通过转录抑制SIRT2.2,PRDM1会加剧MSU诱导的急性痛风性关节炎.
- 这种抑制导致NLRP3炎症酶激活的增加和随后的炎症.
- 向PRDM1可能为急性痛风性关节炎提供治疗策略.
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