Document Detail

Through gap junction communications, co-cultured mast cells and fibroblasts generate fibroblast activities allied with hypertrophic scarring.
MedLine Citation:
PMID:  23629085     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: The prominent inflammatory cell identified in excessive scarring is the mast cell. Hypertrophic scar exhibits myofibroblasts derived from the transformation of fibroblasts, increased collagen synthesis, and stationary nonmigratory resident cells. The co-culture of fibroblasts with an established rat mast cell line (RMC-1) was used to explore the hypothesis of whether mast cells through gap junctional intercellular communications guide fibroblasts in promoting excessive scarring.
METHODS: Human dermal fibroblasts were cultured alone or co-cultured with RMC-1 cells as is or with either blocked gap junctional intercellular communications or devoid of cytoplasmic granules. Collagen synthesis was analyzed by dot blot analysis; immunohistology identified myofibroblasts, and a cell migration assay measured fibroblast locomotion.
RESULTS: Fibroblasts co-cultured with RMC-1 cells transformed into myofibroblasts, had increased collagen synthesis, and showed retarded cell migration. In contrast, RMC-1 cells unable to form gap junctional intercellular communications were similar to fibroblasts alone, failing to promote these activities. Degranulated RMC-1 cells were as effective as intact RMC-1 cells.
CONCLUSIONS: Mast cells induce fibroblast activities associated with hypertrophic scarring through gap junctional intercellular communications. Eliminating the mast cell or its gap junctional intercellular communications with fibroblasts may be a possible approach in preventing hypertrophic scarring or reducing fibrotic conditions.
Theodore T Foley; H Paul Ehrlich
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Plastic and reconstructive surgery     Volume:  131     ISSN:  1529-4242     ISO Abbreviation:  Plast. Reconstr. Surg.     Publication Date:  2013 May 
Date Detail:
Created Date:  2013-04-30     Completed Date:  2013-07-16     Revised Date:  2014-10-13    
Medline Journal Info:
Nlm Unique ID:  1306050     Medline TA:  Plast Reconstr Surg     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1036-44     Citation Subset:  AIM; IM    
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MeSH Terms
Cell Communication / physiology*
Cell Line
Cell Movement / physiology
Cicatrix, Hypertrophic / pathology*,  physiopathology
Coculture Techniques
Collagen / biosynthesis
Fibroblasts / cytology*,  physiology
Fibrosis / pathology,  physiopathology
Foreskin / cytology
Gap Junctions / physiology*
Mast Cells / cytology*,  physiology
Myofibroblasts / cytology*,  physiology
Reg. No./Substance:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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