18Feb 2023
Alveolar macrophages drive lung fibroblast function during idiopathic pulmonary fibrosis

Alveolar macrophages drive lung fibroblast function during idiopathic pulmonary fibrosis

The study aimed to examine the cellular interplay between fibroblasts and alveolar macrophages (AM) in idiopathic pulmonary fibrosis (IPF). Cells were isolated from IPF and normal human lung tissue and cultured independently or together in various ways to assess AM influence on fibroblast function. The results showed that normal AMs cultured in direct contact with fibroblasts down-regulated ECM gene expression while IPF AMs had little to no effect. Both normal and IPF AMs reduced baseline contractility of normal fibroblasts but had little to no effect on IPF fibroblasts. The observed changes required cell-to-cell contact, indicating that normal fibroblasts are more responsive to AM crosstalk, and AM influence on fibroblast behavior depends on cell proximity.

  • #pulmonology

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