title: BMP-7 attenuates TGF-β1-induced fibroblast-like differentiation of rat dermal papilla cells.
abstract: Dermal papilla cells (DPCs) show phenotypic plasticity during wound healing. The multipotency of DPCs is well recognized, but the signaling pathways that regulate the differentiation of these cells into fibroblasts are poorly understood. A preliminary experiment showed that transforming growth factor beta1 (TGF-β1) can induce DPCs to differentiate into fibroblast-like cells, which suggests that DPCs may be a source of wound-healing fibroblasts. Bone morphogenetic protein-7 (BMP-7), a member of the TGF-β superfamily, can prevent and reverse fibrosis by counteracting the TGF-β1-mediated profibrotic effect. To determine whether BMP-7 attenuates the TGF-β1-induced differentiation of DPCs into fibroblasts, we established an in vitro system for DPC differentiation and recorded the gene expression patterns that distinguished DPCs from fibroblasts. The proportion of fibroblast-like cells was significantly enhanced in DPCs treated with TGF-β1, as evidenced by immunocytochemistry, flow cytometry, quantitative real-time reverse transcriptase polymerase chain reaction, and Western blot analysis. BMP-7 and TGF-β1 administration substantially decreased fibroblast-like differentiation, indicating inhibition of TGF-β1-induced differentiation. The antagonistic BMP-7- and TGF-β1-activated signaling pathways can be used to promote wound healing or suppress hypertrophic scarring.
authors: Department of Burns, First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.
authors: Shu
authors: S
authors: Bin
authors: Hou-Dong
authors: HD
authors: Li
authors: Ying-Bin
authors: YB
authors: Xu
authors: Shao-Hai
authors: SH
authors: Qi
authors: Tian-Zeng
authors: TZ
authors: Li
authors: Xu-Sheng
authors: XS
authors: Liu
authors: Jin-Ming
authors: JM
authors: Tang
authors: Ju-Lin
authors: JL
authors: Xie
mesh_terms: D000199:Actins / Q000037:antagonists & inhibitors; D000818:Animals; D015153:Blotting, Western; D055419:Bone Morphogenetic Protein 7 / Q000378:metabolism* / Q000494:pharmacology; D002135:Calcium-Binding Proteins / Q000037:antagonists & inhibitors; D002454:Cell Differentiation; D049109:Cell Proliferation; D002478:Cells, Cultured; D017439:Cicatrix, Hypertrophic / Q000378:metabolism / Q000473:pathology / Q000503:physiopathology* / Q000517:prevention & control; D005260:Female; D005347:Fibroblasts / Q000378:metabolism*; D005434:Flow Cytometry; D018859:Hair Follicle / Q000166:cytology / Q000378:metabolism*; D007150:Immunohistochemistry; D008297:Male; D051381:Rats; D017207:Rats, Sprague-Dawley; D060888:Real-Time Polymerase Chain Reaction; D020133:Reverse Transcriptase Polymerase Chain Reaction; D015398:Signal Transduction / Q000187:drug effects; D016212:Transforming Growth Factor beta / Q000037:antagonists & inhibitors* / Q000494:pharmacology; D014746:Vimentin / Q000037:antagonists & inhibitors; D014945:Wound Healing
chemical_list: D000199:Actins; D055419:Bone Morphogenetic Protein 7; D002135:Calcium-Binding Proteins; D016212:Transforming Growth Factor beta; D014746:Vimentin; C579666:FSP1 protein, rat; C498862:Acta2 protein, rat