LRP1 regulates asthmatic airway smooth muscle proliferation through FGF2/ERK signaling.

ABSTRACT: Airway smooth muscle (ASM) hyperplasia is a hallmark of airway remodeling in asthma, which still lacks an effective treatment. Low-density lipoprotein receptor-related protein 1 (LRP1) is involved in regulating the proliferation of various cell types, and the intracellular domain of LRP1 (LRP1-ICD) also exhibits unique biological functions. However, the role of LRP1 in asthma airway remodeling remains unclear. In the present study, LRP1 was increased in ASM cells of mice with OVA-induced chronic asthma, with the elevation in LRP1-ICD protein levels being significantly greater than that of the LRP1 β chain. In vivo experiments demonstrated that inhibiting LRP1 reduced ASM proliferation in these mice. Mechanistically, LRP1 knockdown inhibited the FGF2/ERK signaling pathway, thereby arresting

SUBMITTER: Deng Y 

PROVIDER: S-EPMC12220950 | biostudies-literature | 2025 Jun

REPOSITORIES: biostudies-literature