03Mar 2023
Basal Cell–derived WNT7A Promotes Fibrogenesis at the Fibrotic Niche in Idiopathic Pulmonary Fibrosis

Basal Cell–derived WNT7A Promotes Fibrogenesis at the Fibrotic Niche in Idiopathic Pulmonary Fibrosis

Idiopathic pulmonary fibrosis (IPF) is characterized by loss of epithelial integrity, bronchiolarization, and fibroblast activation. Basal-like cells accumulate in IPF and may promote fibrogenesis. This study investigated the role of basal cells in IPF using single-cell RNA sequencing, niche labeling, and organoid culture assays. Basal cells express WNT7A, which activates fibroblasts and inhibits type 2 alveolar epithelial cell (AEC2) renewal. Neutralizing antibodies against WNT7A or a small molecule inhibitor of Frizzled signaling attenuated lung fibrosis in mice. This study provides a new understanding of the non-stem cell function of basal cells in IPF and a potential targeting strategy for IPF.

  • #pulmonology

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