Document Detail


Lineage tracing and genetic ablation of ADAM12(+) perivascular cells identify a major source of profibrotic cells during acute tissue injury.
MedLine Citation:
PMID:  22842476     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Profibrotic cells that develop upon injury generate permanent scar tissue and impair organ recovery, though their origin and fate are unclear. Here we show that transient expression of ADAM12 (a disintegrin and metalloprotease 12) identifies a distinct proinflammatory subset of platelet-derived growth factor receptor-α-positive stromal cells that are activated upon acute injury in the muscle and dermis. By inducible genetic fate mapping, we demonstrate in vivo that injury-induced ADAM12(+) cells are specific progenitors of a major fraction of collagen-overproducing cells generated during scarring, which are progressively eliminated during healing. Genetic ablation of ADAM12(+) cells, or knockdown of ADAM12, is sufficient to limit generation of profibrotic cells and interstitial collagen accumulation. ADAM12(+) cells induced upon injury are developmentally distinct from muscle and skin lineage cells and are derived from fetal ADAM12(+) cells programmed during vascular wall development. Thus, our data identify injury-activated profibrotic progenitors residing in the perivascular space that can be targeted through ADAM12 to limit tissue scarring.
Authors:
Sophie Dulauroy; Selene E Di Carlo; Francina Langa; Gérard Eberl; Lucie Peduto
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-7-29
Journal Detail:
Title:  Nature medicine     Volume:  -     ISSN:  1546-170X     ISO Abbreviation:  -     Publication Date:  2012 Jul 
Date Detail:
Created Date:  2012-7-30     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9502015     Medline TA:  Nat Med     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
1] Institut Pasteur, Lymphoid Tissue Development Unit, Paris, France. [2] Centre National de la Recherche Scientifique (CNRS), Unité de Recherche Associée (URA)1961, Paris, France.
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