title: Overexpression of miR-200b inhibits the cell proliferation and promotes apoptosis of human hypertrophic scar fibroblasts in vitro.
abstract: Hypertrophic scarring leads to a deformed appearance and contracted neogenetic tissue, resulting in physiological and psychological problems for patients. Millions of people suffer these discomforts each year. Emerging evidence has reported that miRNA contributed to hypertrophic scarring or keloid formation. In this study, nine hypertrophic scar samples and the matched normal skin tissues were used to perform a miRNA microarray. The results of miRNA array showed that miR-200b was downregulated by more than 2-fold, validated by qPCR in hypertrophic scar tissues and human hypertrophic scar fibroblasts, suggesting that there was an important correlation between miR-200b and hypertrophic scarring. We also found that miR-200b affected hypertrophic scarring through regulating the cell proliferation and apoptosis of human hypertrophic scar fibroblasts by affecting the collagen I and III synthesis, fibronectin expression and TGF-β1/α-SMA signaling. Thus, our study provides evidence to support that miR-200b may be a useful target for hypertrophic scarring management.
authors.affiliation: Department of Plastic Surgery, The Third Xiang-Ya Hospital, Central South University, Changsha, China.
authors.forename: Ping
authors.initials: P
authors.lastname: Li
authors.forename: Quan-Yong
authors.initials: QY
authors.lastname: He
authors.forename: Cheng-Qun
authors.initials: CQ
authors.lastname: Luo
mesh_terms: D000199:Actins / Q000378:metabolism; D000293:Adolescent; D000328:Adult; D017209:Apoptosis; D053148:Caspase 3 / Q000378:metabolism; D053181:Caspase 8 / Q000378:metabolism; D049109:Cell Proliferation; D002648:Child; D002675:Child, Preschool; D017439:Cicatrix, Hypertrophic / Q000209:etiology / Q000378:metabolism*; D024042:Collagen Type I / Q000096:biosynthesis; D024061:Collagen Type III / Q000096:biosynthesis; D005260:Female; D005347:Fibroblasts / Q000378:metabolism*; D005353:Fibronectins / Q000378:metabolism; D020869:Gene Expression Profiling; D006801:Humans; D008297:Male; D035683:MicroRNAs / Q000378:metabolism*; D020411:Oligonucleotide Array Sequence Analysis; D018809:Proliferating Cell Nuclear Antigen / Q000378:metabolism; D053773:Transforming Growth Factor beta1 / Q000378:metabolism; D055815:Young Adult
chemical_list: C541116:ACTA2 protein, human; D000199:Actins; D024042:Collagen Type I; D024061:Collagen Type III; D005353:Fibronectins; C533896:MIRN200 microRNA, human; D035683:MicroRNAs; D018809:Proliferating Cell Nuclear Antigen; C508960:TGFB1 protein, human; D053773:Transforming Growth Factor beta1; D053148:Caspase 3; D053181:Caspase 8
keywords: TGF-β1; collagen; hypertrophic scarring; in vitro; miRNA-200b; α-SMA