CD201+ fascia progenitors choreograph injury repair

Nature. 2023 Nov;623(7988):792-802. doi: 10.1038/s41586-023-06725-x. Epub 2023 Nov 15.

Abstract

Optimal tissue recovery and organismal survival are achieved by spatiotemporal tuning of tissue inflammation, contraction and scar formation1. Here we identify a multipotent fibroblast progenitor marked by CD201 expression in the fascia, the deepest connective tissue layer of the skin. Using skin injury models in mice, single-cell transcriptomics and genetic lineage tracing, ablation and gene deletion models, we demonstrate that CD201+ progenitors control the pace of wound healing by generating multiple specialized cell types, from proinflammatory fibroblasts to myofibroblasts, in a spatiotemporally tuned sequence. We identified retinoic acid and hypoxia signalling as the entry checkpoints into proinflammatory and myofibroblast states. Modulating CD201+ progenitor differentiation impaired the spatiotemporal appearances of fibroblasts and chronically delayed wound healing. The discovery of proinflammatory and myofibroblast progenitors and their differentiation pathways provide a new roadmap to understand and clinically treat impaired wound healing.

MeSH terms

  • Animals
  • Cell Differentiation
  • Cell Hypoxia
  • Cell Lineage
  • Disease Models, Animal
  • Endothelial Protein C Receptor* / metabolism
  • Fascia* / cytology
  • Fascia* / injuries
  • Fascia* / metabolism
  • Fibroblasts / cytology
  • Fibroblasts / metabolism
  • Gene Expression Profiling
  • Inflammation / metabolism
  • Inflammation / pathology
  • Mice
  • Myofibroblasts / cytology
  • Myofibroblasts / metabolism
  • Signal Transduction
  • Single-Cell Gene Expression Analysis
  • Skin / cytology
  • Skin / injuries
  • Skin / metabolism
  • Tretinoin / metabolism
  • Wound Healing*

Substances

  • Endothelial Protein C Receptor
  • Tretinoin