在类风湿性关节炎中,RhoA通过Wnt/PCP通路促进突增殖和骨侵蚀
Ning Chen1,2, Chao-Yue Diao1, Xin Huang3
1Department of Rheumatology and Immunology, Changhai Hospital, Naval Medical University, Shanghai, China.
Mediators of inflammation
|November 29, 2023
概括
拉斯同源基因家族成员A (RhoA) 在类风湿性关节炎 (RA) 中过度表达. 沉默RhoA在小鼠模型中减少了RA纤维细胞样同胞细胞入侵和骨质侵蚀,这表明RhoA是一个治疗目标.
科学领域:
- 类风湿病学 类风湿病学
- 分子生物学分子生物学
- 免疫学 免疫学 免疫学
背景情况:
- 类风湿性关节炎 (RA) 涉及激活的Wnt/平面细胞极性 (PCP) 途径.
- 拉斯同源基因家族成员A (RhoA) 参与PCP通路.
- 罗亚在RA发病的特定作用,包括突炎和骨质侵蚀,仍然不清楚.
研究的目的:
- 调查RhoA对RA纤维细胞样同胞细胞 (FLS) 扩散和入侵的影响.
- 为了阐明RhoA对骨质细胞分化的影响.
- 评估RhoA在原诱导关节炎 (CIA) 的小鼠模型中的作用.
主要方法:
- 在RA和CIA突组织中评估了RhoA的过度表达.
- 在RA-FLS和体外骨质结晶体中进行了透视病毒介导的RhoA沉默.
- 分析了对亡,侵袭,骨质保护素/核因子-KB合体 (OPG/RANKL) 的受体激活器比率和骨质细胞分化的影响.
- 在CIA小鼠模型中评估了突细胞增生和骨质侵蚀.
主要成果:
- 发现RhoA在RA和CIA结膜组织中过度表达.
- 在RA-FLS中沉默RhoA增加了亡,减少了入侵,并提高了OPG/RANKL比率.
- 在实验室中,RhoA沉默抑制了骨质细胞分化.
- 在CIA小鼠模型中,抑制RhoA可缓解突增生和骨质侵蚀.
结论:
- 罗亚在RA的发病过程中起着重要作用,有助于FLS的入侵和骨质细胞分化.
- RhoA通过RhoA/Rho相关蛋白激酶2 (ROCK2) 途径发挥其作用,可能与Janus激酶/信号转换器和转录激活器 (JAK/STAT) 途径相互作用.
- 向RhoA可能是治疗类风湿性关节炎及其相关骨质侵蚀的新疗法策略.
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