ATP6V0C-HIF-1α相互激活驱动急性肺损伤
Yunfan Hu1,2,3, Ying Wang4, Changhao Ren1,2
1Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, 200032, China.
American journal of respiratory cell and molecular biology
|February 25, 2026
概括
真空H+-ATPase (V-ATPase) 和缺氧诱导因子1 (HIF-1) 形成一个有害的反循环,通过增加炎症和细胞死亡,恶化急性肺损伤 (ALI). 针对这种ATP6V0C-HIF-1α循环可能为ALI和急性呼吸困扰综合征 (ARDS) 提供一种新的治疗方法.
科学领域:
- 分子生物学分子生物学
- 细胞生理学 细胞生理学
- 肺部医学 肺部医学
背景情况:
- 真空H+-ATPase (V-ATPase) 维持细胞内pH值,但其在急性肺损伤 (ALI) 和急性呼吸困扰综合征 (ARDS) 中的作用尚不清楚.
- 缺氧诱导因子1 (HIF-1) 是细胞对低氧反应的关键调节者,通常与疾病的发病有关.
研究的目的:
- 研究V-ATPase,特别是ATP6V0C和HIF-1在ALI/ARDS发展中的功能相关性.
- 阐明在肺损伤中ATP6V0C和HIF-1之间相互作用的分子机制.
主要方法:
- 使用膜特异性ATP6V0C淘汰 (Atp6v0c AT2-KO) 和HIF1A淘汰 (Hif1a AT2-KO) 的小鼠.
- 从ARDS患者和ALI小鼠模型的血清和支气管洗液 (BALF) 中测量ATP6V0C表达.
- 进行了转录基因分析和共同免疫沉 (Co-IP) 以确定分子相互作用和途径.
主要成果:
- 在ALI模型的肺组织和严重ARDS患者的BALF中观察到增加的ATP6V0C表达,与疾病严重程度相关.
- ATP6V0C的遗传缺陷减弱了LPS诱导的ALI特征,而当HIF-1α在ATP6V0C的存在下被操纵时发生了恶化.
- 确定了一个积极的反循环,ATP6V0C和HIF-1α相互作用并相互调节,促进ALI中的上皮细胞亡和炎症.
结论:
- 该研究发现了一种有害的ATP6V0C-HIF-1α反循环,通过增强的上皮细胞亡和炎症驱动ALI进展.
- 在BALF中ATP6V0C水平是ARDS严重程度的潜在生物标志物.
- 针对ATP6V0C-HIF-1α相互作用为ALI/ARDS提供了一个潜在的治疗策略.
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