title: Genome-wide analysis using exon arrays demonstrates an important role for expression of extra-cellular matrix, fibrotic control and tissue remodelling genes in Dupuytren's disease.
abstract: Dupuytren's disease (DD) is a classic example of pathological fibrosis which results in a debilitating disorder affecting a large sector of the human population. It is characterized by excessive local proliferation of fibroblasts and over-production of collagen and other components of extracellular matrix (ECM) in the palmar fascia. The fibrosis progressively results in contracture of elements between the palmar fascia and skin causing flexion deformity or clawing of the fingers and a severe reduction in hand function. While much is known about the pathogenesis and surgical treatment of DD, little is known about the factors that cause its onset and progression, despite many years of research. Gene expression patterns in DD patients now offers the potential to identify genes that direct the pathogenesis of DD. In this study we used primary cultures of fibroblasts derived from excisional biopsies of fibrotic tissue from DD patients to compare the gene expression profiles on a genome-wide basis with normal control fibroblasts. Our investigations have identified genes that may be involved with DD pathogenesis including some which are directly relevant to fibrosis. In particular, these include significantly reduced expression levels of three matrix metallopeptidases (MMP1, MMP3, MMP16), follistatin, and STAT1, and significantly increased expression levels of fibroblast growth factors (FGF9, FGF11), a number of collagen genes and other ECM genes in DD patient samples. Many of these gene products are known to be involved in fibrosis, tumour formation and in the normal processes of tissue remodelling. In addition, alternative splicing was identified in some DD associated genes. These highly sensitive genomic investigations provide new insight into the molecular mechanisms that may underpin the development and progression of DD.
authors.affiliation: Centre for Innate Immunology and Infectious Disease, Monash Institute of Medical Research, Monash University, Clayton, Victoria, Australia.
authors.forename: Helen B
authors.initials: HB
authors.lastname: Forrester
authors.forename: Peter
authors.initials: P
authors.lastname: Temple-Smith
authors.forename: Seungmin
authors.initials: S
authors.lastname: Ham
authors.forename: David
authors.initials: D
authors.lastname: de Kretser
authors.forename: Graeme
authors.initials: G
authors.lastname: Southwick
authors.forename: Carl N
authors.initials: CN
authors.lastname: Sprung
mesh_terms: D000328:Adult; D000368:Aged; D016022:Case-Control Studies; D016000:Cluster Analysis; D003094:Collagen / Q000235:genetics; D004387:Dupuytren Contracture / Q000235:genetics*; D059472:Exome; D005109:Extracellular Matrix / Q000235:genetics*; D005260:Female; D005347:Fibroblasts / Q000378:metabolism; D005355:Fibrosis / Q000235:genetics*; D038681:Follistatin / Q000235:genetics; D020869:Gene Expression Profiling; D005786:Gene Expression Regulation; D055106:Genome-Wide Association Study; D006801:Humans; D008297:Male; D020782:Matrix Metalloproteinases / Q000235:genetics; D008875:Middle Aged; D058977:Molecular Sequence Annotation; D005810:Multigene Family / Q000235:genetics; D015203:Reproducibility of Results; D016212:Transforming Growth Factor beta / Q000235:genetics
chemical_list: D038681:Follistatin; D016212:Transforming Growth Factor beta; D003094:Collagen; D020782:Matrix Metalloproteinases
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