Positional differences in the wound transcriptome of skin and oral mucosa

BMC Genomics

Research Article

Phillip T Marucha¹  Lin Chen¹  Luisa A DiPietro¹  Shujuan Guo¹  Zarema H Arbieva²  Thomas A Mustoe³ 

[1] Center for Wound Healing & Tissue Regeneration, University of Illinois, Chicago, USA;Core Genomics Laboratory, University of Illinois, Chicago, USA;Department of Surgery, Division of Plastic Surgery, Feinberg School of Medicine, Northwestern University, Chicago, USA;

关键词: Oral Mucosa;    Mucosal Wound;    Skin Wound;    Reduce Scar Formation;    Riken cDNA;   

DOI  :  10.1186/1471-2164-11-471

 received in 2010-02-02, accepted in 2010-08-12,  发布年份 2010

来源: Springer

【 摘 要 】

BackgroundWhen compared to skin, oral mucosal wounds heal rapidly and with reduced scar formation. Recent studies suggest that intrinsic differences in inflammation, growth factor production, levels of stem cells, and cellular proliferation capacity may underlie the exceptional healing that occurs in oral mucosa. The current study was designed to compare the transcriptomes of oral mucosal and skin wounds in order to identify critical differences in the healing response at these two sites using an unbiased approach.ResultsUsing microarray analysis, we explored the differences in gene expression in skin and oral mucosal wound healing in a murine model of paired equivalent sized wounds. Samples were examined from days 0 to 10 and spanned all stages of the wound healing process. Using unwounded matched tissue as a control, filtering identified 1,479 probe sets in skin wounds yet only 502 probe sets in mucosal wounds that were significantly differentially expressed over time. Clusters of genes that showed similar patterns of expression were also identified in each wound type. Analysis of functionally related gene expression demonstrated dramatically different reactions to injury between skin and mucosal wounds. To explore whether site-specific differences might be derived from intrinsic differences in cellular responses at each site, we compared the response of isolated epithelial cells from skin and oral mucosa to a defined in vitro stimulus. When cytokine levels were measured, epithelial cells from skin produced significantly higher amounts of proinflammatory cytokines than cells from oral mucosa.ConclusionsThe results provide the first detailed molecular profile of the site-specific differences in the genetic response to injury in mucosa and skin, and suggest the divergent reactions to injury may derive from intrinsic differences in the cellular responses at each site.

【 授权许可】

Unknown   
© Chen et al; licensee BioMed Central Ltd. 2010. This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.