YAP作为喘中肌纤维细胞形成的潜在治疗标
Yanrong Guo1, Yuran Zhou1, Rui Wang1
1Guangdong-Hong Kong-Macao University Joint Laboratory of Interventional Medicine, the Fifth Affiliated Hospital, Sun Yat-Sen University, Zhuhai, 519000, China.
Respiratory research
|February 12, 2025
概括
气膜细胞中YAP激活驱动了喘中的呼吸道重塑. 向YAP与脊柱蛋白抑制肌纤维细胞的形成和原沉积,提供一个潜在的新的喘治疗.
科学领域:
- 肺部医学 肺部医学
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
背景情况:
- 肌纤维细胞积累在喘中呼吸道重塑的核心作用,这一过程是不太了解的,目前的治疗方法并没有针对这一过程.
- 是的相关蛋白 (YAP) 在调解这个过程中的作用仍然在很大程度上未被探索.
研究的目的:
- 研究YAP在肌纤维细胞形成和喘中呼吸道重塑中的作用.
- 探索膜上皮细胞中的YAP激活机制及其治疗潜力.
主要方法:
- 临床喘和室内灰尘虫 (HDM) 诱导的小鼠肺样本中的免疫光染色.
- 在体外研究中,使用使用人体初级ATII细胞和用HDM或细胞因子刺激的A549细胞.
- 在体外和体内使用siRNA或脊椎蛋白抑制YAP/TAZ.
- 评估肌纤维细胞积累,CTGF表达和原沉积.
主要成果:
- 在喘肺部观察到肌纤维细胞增加,YAP过度表达和CTGF上调.
- HDM或细胞因子刺激通过F-actin聚合激活ATII细胞中的YAP,这种效应被latrunculin A抑制,但不是budesonide.
- 在实验室中,YAP/TAZ抑制损害了纤维细胞到肌纤维细胞的转换.
- 维特波芬治疗在体内减少了肌纤维细胞积累,CTGF和原沉积,但没有显著影响呼吸道炎症.
结论:
- 在ATII细胞中YAP激活是促进纤维细胞向肌纤维细胞过渡和喘中呼吸道重塑的关键机制.
- 用维特波芬准YAP表明了治疗喘气道改造的治疗潜力,独立于抗炎作用.
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