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Shook, Brett A; Wasko, Renee R; Rivera-Gonzalez, Guillermo C; Salazar-Gatzimas, Emilio; López-Giráldez, Francesc; Dash, Biraja C; Muñoz-Rojas, Andrés R; Aultman, Krystal D; Zwick, Rachel K; Lei, Vivian; Arbiser, Jack L; Miller-Jensen, Kathryn; Clark, Damon A; Hsia, Henry C; Horsley, Valerie
Science, 11/2018, Letnik: 362, Številka: 6417Journal Article
During tissue repair, myofibroblasts produce extracellular matrix (ECM) molecules for tissue resilience and strength. Altered ECM deposition can lead to tissue dysfunction and disease. Identification of distinct myofibroblast subsets is necessary to develop treatments for these disorders. We analyzed profibrotic cells during mouse skin wound healing, fibrosis, and aging and identified distinct subpopulations of myofibroblasts, including adipocyte precursors (APs). Multiple mouse models and transplantation assays demonstrate that proliferation of APs but not other myofibroblasts is activated by CD301b-expressing macrophages through insulin-like growth factor 1 and platelet-derived growth factor C. With age, wound bed APs and differential gene expression between myofibroblast subsets are reduced. Our findings identify multiple fibrotic cell populations and suggest that the environment dictates functional myofibroblast heterogeneity, which is driven by fibroblast-immune interactions after wounding.
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in: SICRIS
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