失去p73表达有助于慢性阻塞性肺病
Bradley W Richmond1,2,3, Clayton B Marshall4,5, Jessica B Blackburn1,2
1Department of Veterans Affairs Medical Center, Nashville, Tennessee.
American journal of respiratory and critical care medicine
|November 6, 2023
概括
呼吸道细胞中p73的损失会在小鼠中引起类似于慢性肺炎的症状,吸烟会减少这种症状. 这表明p73可能对预防慢性阻塞性肺病 (COPD) 和相关的多细胞损失至关重要.
科学领域:
- 肺部医学 肺部医学
- 细胞生物学 细胞生物学
- 遗传学 遗传学 是一个
背景情况:
- 在慢性阻塞性肺病 (COPD) 的气道中观察到多细胞 (MCC) 损失,但其对肺病理的贡献尚不清楚.
- 需要对p73在呼吸道上皮质中的作用及其与COPD病原体的联系进行研究.
研究的目的:
- 为了确定p73缺乏是否会在小鼠中诱导一种类似于COPD的表型.
- 调查吸烟和COPD对呼吸道上皮质p73表达的影响.
主要方法:
- 产生了缺乏p73的小鼠 (p73Δ气道) 缺乏MCCs.
- 使用显微镜,流细胞计和肺功能测试分析肺病理.
- 在试验室和体内,以及吸烟者和COPD患者的人体样本中,对烟雾的反应检查了p73表达.
主要成果:
- p73Δ呼吸道小鼠表现出MCC缺失,中性友炎症,瘤样重塑和分泌细胞损失.
- 暴露在香烟烟雾中抑制了呼吸道细胞中的p73表达.
- 与对照组相比,吸烟者减少了p73mRNA,COPD患者减少了表达p73的MCC.
结论:
- 在小鼠呼吸道上皮质中功能性p73的丧失导致MCC缺失,并促进COPD类肺病理.
- 吸烟者和COPD患者的p73表达减少可能导致MCC功能障碍或损失,可能导致COPD的发病.
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