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Title: Functional genomics unique to week 20 post wounding in the deep cone/fat dome of the duroc/yorkshire porcine model of fibroproliferative scarring
Authors: Loren H. Engrav
Christopher K. Tuggle
Kathleen F. Kerr
Kathy Q. Zhu
Surawej Numhom
Oliver P. Couture
Richard P. Beyer
Anne M. Hocking
Gretchen J. Carrougher
Maria Luiza C. Ramos
Matthew B. Klein
Nicole S. Gibran
University of Washington, Seattle
Iowa State University
Mahidol University
Universidade Federal de Sao Paulo
Keywords: Agricultural and Biological Sciences;Biochemistry, Genetics and Molecular Biology
Issue Date: 2-May-2011
Citation: PLoS ONE. Vol.6, No.4 (2011)
Abstract: Background: Hypertrophic scar was first described over 100 years ago; PubMed has more than 1,000 references on the topic. Nevertheless prevention and treatment remains poor, because 1) there has been no validated animal model; 2) human scar tissue, which is impossible to obtain in a controlled manner, has been the only source for study; 3) tissues typically have been homogenized, mixing cell populations; and 4) gene-by-gene studies are incomplete. Methodology/Principal Findings: We have assembled a system that overcomes these barriers and permits the study of genome-wide gene expression in microanatomical locations, in shallow and deep partial-thickness wounds, and pigmented and non-pigmented skin, using the Duroc(pigmented fibroproliferative)/Yorkshire(non-pigmented non-fibroproliferative) porcine model. We used this system to obtain the differential transcriptome at 1, 2, 3, 12 and 20 weeks post wounding. It is not clear when fibroproliferation begins, but it is fully developed in humans and the Duroc breed at 20 weeks. Therefore we obtained the derivative functional genomics unique to 20 weeks post wounding. We also obtained long-term, forty-six week follow-up with the model. Conclusions/Significance: 1) The scars are still thick at forty-six weeks post wounding further validating the model. 2) The differential transcriptome provides new insights into the fibroproliferative process as several genes thought fundamental to fibroproliferation are absent and others differentially expressed are newly implicated. 3) The findings in the derivative functional genomics support old concepts, which further validates the model, and suggests new avenues for reductionist exploration. In the future, these findings will be searched for directed networks likely involved in cutaneous fibroproliferation. These clues may lead to a better understanding of the systems biology of cutaneous fibroproliferation, and ultimately prevention and treatment of hypertrophic scarring. © 2011 Engrav et al.
ISSN: 19326203
Appears in Collections:Scopus 2011-2015

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