脱化酶USP4通过稳定RYBP来促进热囊细胞功能障碍
Xuandi Wu1, Jia Hong2, Liang Hong3
1Department of Obstetrics, Northwest Women's and Children's Hospital, Xi'an, Shaanxi, China.
Cell biochemistry and biophysics
|October 15, 2024
概括
孕前 (PE) 涉及到热囊细胞功能障碍. 这项研究发现,减少USP4-介导的泛化会增加RYBP,损害热囊细胞功能,并为PE提供新的治疗点.
科学领域:
- 生殖生物学 生殖生物学
- 分子病原体的产生.
- 生物化学 生物化学
背景情况:
- 孕前 (PE) 的发病包括螺旋动脉重塑功能受损,胎盘功能障碍和 trofhoblast 透不足.
- 环1和YY1结合蛋白 (RYBP) 与热囊细胞功能障碍有关,但其在PE中的确切作用尚不清楚.
研究的目的:
- 阐明在孕前 (PE) 期间的热囊细胞中RYBP的分子机制.
- 调查RYBP和Ubiquitin特异性酶4 (USP4) 在PE病变发生过程中的相互作用.
主要方法:
- 实时定量聚合酶连锁反应 (RT-qPCR) 和西部斑点测试用于测量RYBP,USP4和PI3K/AKT通路蛋白质.
- 细胞测试 (MTT,EDU,流细胞计,Transwell,伤口愈合) 评估了热囊细胞功能.
- 同免疫沉 (CoIP) 验证了USP4-RYBP相互作用.
主要成果:
- 在PE患者的胎盘组织中,RYBP和USP4被上调.
- 过度表达RYBP或USP4升高调节损害了热囊细胞活力,增殖,入侵,迁移,并促进了细胞亡.
- USP4使RYBP脱和稳定,从而抑制PI3K/AKT通路.
结论:
- 降低USP4-介导的泛化增强RYBP表达,对PE中的热囊细胞功能产生不利影响.
- USP4-RYBP相互作用及其对PI3K/AKT通路的调节为孕前提供了一个新的治疗点.
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