生物
再生(生物学)
平衡
肺
发病机制
呼吸道
细胞生物学
上皮
细胞
免疫学
病理
呼吸系统
解剖
遗传学
医学
内科学
作者
Arvind Konkimalla,Aleksandra Tata,Purushothama Rao Tata
出处
期刊:Cold Spring Harbor Perspectives in Biology
[Cold Spring Harbor Laboratory]
日期:2021-11-08
卷期号:14 (10): a040873-a040873
被引量:4
标识
DOI:10.1101/cshperspect.a040873
摘要
Lung epithelium, the lining that covers the inner surface of the respiratory tract, is directly exposed to the environment and thus susceptible to airborne toxins, irritants, and pathogen-induced damages. In adult mammalian lungs, epithelial cells are generally quiescent but can respond rapidly to repair of damaged tissues. Evidence from experimental injury models in rodents and human clinical samples has led to the identification of these regenerative cells, as well as pathological metaplastic states specifically associated with different forms of damages. Here, we provide a compendium of cells and cell states that exist during homeostasis in normal lungs and the lineage relationships between them. Additionally, we discuss various experimental injury models currently being used to probe the cellular sources-both resident and recruited-that contribute to repair, regeneration, and remodeling following acute and chronic injuries. Finally, we discuss certain maladaptive regeneration-associated cell states and their role in disease pathogenesis.
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