FEBS Open Bio (Oct 2023)

Fibroblast growth factor 2 acts as an upstream regulator of inhibition of pulmonary fibroblast activation

  • Xiangqin Tian,
  • Yangyang Jia,
  • Yonglong Guo,
  • Hongyin Liu,
  • Xinhua Cai,
  • Yong Li,
  • Zhuangzhuang Tian,
  • Changye Sun

DOI
https://doi.org/10.1002/2211-5463.13691
Journal volume & issue
Vol. 13, no. 10
pp. 1895 – 1909

Abstract

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Fibroblast growth factor (FGF) signaling plays a crucial role in lung development and repair. Fibroblast growth factor 2 (FGF2) can inhibit fibrotic gene expression and suppress the differentiation of pulmonary fibroblasts (PFs) into myofibroblasts in vitro, suggesting that FGF2 is a potential target for inhibiting pulmonary fibrosis. To gain deeper insights into the molecular mechanism underlying FGF2‐mediated regulation of PFs, we performed mRNA sequencing analysis to systematically and globally uncover the regulated genes and biological functions of FGF2 in PFs. Gene Ontology analysis revealed that the differentially expressed genes regulated by FGF2 were enriched in multiple cellular functions including extracellular matrix (ECM) organization, cytoskeleton formation, β‐catenin‐independent Wnt signaling pathway, supramolecular fiber organization, epithelial cell proliferation, and cell adhesion. Gene Set Enrichment Analysis and cellular experiments confirmed that FGF2 can suppress ECM and actin filament organization and increase PFs proliferation. Taken together, these findings indicate that FGF2 acts as an upstream regulator of the inhibition of PFs activation and may play a regulatory role in pulmonary fibrosis.

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