miR-203通过短暂的受体潜能调节孕妇子宫肌肉收缩性,化物4通道表达
Lihua Ying1, Daiana D Fornes1, Amy D Dobberfuhl2
1Division of Pulmonary, Asthma, and Sleep Medicine, Stanford University School of Medicine, Stanford, California, USA.
概括
微RNA 203 (miR-203) 通过控制TRPV4通道来调节怀孕期间子宫收缩. 降低miR-203和增加TRPV4与早产有关,这表明miR-203是一个新的治疗点.
科学领域:
- 生殖生物学 生殖生物学
- 分子遗传学 分子遗传学
- 生理学 生理学 生理学
背景情况:
- 过早分娩是新生儿死亡率和发病率的主要原因.
- 在怀孕期间,短暂受体潜在化物4 (TRPV4) 通道在子宫光滑肌中被上调.
- 了解子宫收缩率的调节对于预防早产至关重要.
研究的目的:
- 研究微RNA203 (miR-203) 在妊娠期间调节TRPV4表达和子宫收缩性的作用.
- 探索针对miR-203作为早产治疗策略的潜力.
主要方法:
- 在整个妊娠期间,对小鼠和人类子宫组织中miR-203和TRPV4表达的分析.
- 使用人类和小鼠子宫光滑肌细胞 (UtSMC) 进行体外研究,以评估miR-203操纵对TRPV4表达和信号传递的影响.
- 从miR-203淘汰赛小鼠的TRPV4激素治疗的肌肉组织中进行药理学研究.
- 调查miR-203与TRPV4发起者区域结合的情况.
- 炎症性早产的小鼠模型.
主要成果:
- 在妊娠期间,miR-203的表达逐渐减少,而TRPV4的mRNA和蛋白质的表达相互增加.
- 人类UtSMC中的miR-203过度表达减少TRPV4表达;沉默miR-203增加它.
- miR-203调节TRPV4介导的进入和小鼠UtSMC中的收缩性.
- 来自miR-203淘汰赛小鼠的骨髓组织对TRPV4激动剂的反应增加.
- miR-203直接与TRPV4促进体结合,从而降低其表达.
- 在早产的小鼠模型中,miR-203的过度表达会延长怀孕.
- 雌激醇降低了miR-203并增加了TRPV4的表达.
结论:
- miR-203通过控制TRPV4表达来负面调节怀孕期间的子宫收缩性.
- miR-203/TRPV4轴代表了控制子宫静止和收缩的新机制.
- 准miR-203为预防早产和治疗早产提供了一个有希望的治疗途径.
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