时钟基因Bmal1控制了类风湿性关节炎纤维细胞样同胞细胞中的炎症媒介
Kenta Kaneshiro1, Kanako Nakagawa1, Hikari Tsukamoto1
1Department of Biophysics, Kobe University Graduate School of Health Sciences, Kobe, Japan.
Biochemical and biophysical research communications
|December 3, 2023
概括
主钟基因Bmal1 (大脑和肌肉ARNT类蛋白1) 通过调节炎症介质,在类风湿性关节炎 (RA) 中发挥作用. 沉默Bmal1降低了RA-纤维细胞样同胞细胞 (RA-FLS) 中关键炎症分子的产生.
科学领域:
- 时间生物学 时间生物学
- 免疫学 免疫学 免疫学
- 类风湿病学 类风湿病学
背景情况:
- 类风湿性关节炎 (RA) 是一种慢性自身免疫性疾病,其特征是关节炎症.
- 纤维细胞样同胞细胞 (FLS) 通过产生炎症介导体,在RA的发病过程中发挥关键作用.
- 时钟基因,如Bmal1 (大脑和肌肉ARNT类蛋白1) 调节各种细胞过程,包括炎症.
研究的目的:
- 研究Bmal1时钟基因在RA-FLS.产生的炎症介质中的作用.
- 要确定Bmal1是否影响关键炎症分子的表达,这些分子与RA有关.
主要方法:
- 类风湿性关节炎纤维细胞样同胞细胞 (RA-FLS) 通过促炎性细胞因子 (IL-1β,TNF-α,IFN-γ) 得到刺激.
- 使用qPCR,ELISA和免疫光染色分析了Bmal1和炎症媒介 (MMP-3,CCL2,IL-6) 的表达.
- 使用siRNA (siBmal1) 沉默Bmal1,以评估其对炎症媒介产生的直接影响.
主要成果:
- 亲炎性细胞因子刺激 (IL-1β,TNF-α,IFN-γ) 在RA-FLS中增加了Bmal1表达.
- 抑制Bmal1显著抑制了MMP-3,CCL2和IL-6的mRNA和蛋白质水平.
- 这些发现表明,Bmal1调节了这些炎症媒介的产生.
结论:
- Bmal1参与RA-FLS的MMP-3,CCL2和IL-6的产生.
- 时钟基因Bmal1通过调节炎症来促进RA的发病.
- 向Bmal1可能代表了管理RA的新治疗策略.
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