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TGF-β1-treated ADSCs-CM promotes expression of type I collagen and MMP-1, migration of human skin fibroblasts, and wound healing in vitro and in vivo

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Conditioned medium from adipose-derived stem cells (ADSCs) stimulates both collagen synthesis and migration of dermal fibroblasts. However, it is still unknown whether conditioned media from tumor growth factor (TGF)-β1-treated ADSCs (TGF-β1-treated ADSCs-CM) induces increased expression of type I collagen, matrix metalloproteinase-1 (MMP-1), and migration as well as cell cycle regulatory proteins in fibroblasts, compared to non-treated ADSCs-CM. Our data showed that TGF-β1-treated ADSCs-CM promoted effectively the proliferation and migration of human skin fibroblasts, compared to non-treated ADSCs-CM. In addition the expression of MMP-1 were markedly increased by treatment of TGF-β1-treated ADSCs-CM in fibroblasts, compared to non-treated ADSCs-CM. Expression of type I collagen protein were slightly increased by treatment of TGF-β1-treated ADSCs-CM in fibroblasts. The expression of cell cycle regulators of G1/S phase transition were not markedly altered by treatment of TGF-β1-treated ADSCs-CM. Finally, artificial wounds were made using a 4-mm punch biopsy in hairless mice and TGF-β1-treated ADSCs-CM were injected into the wound area. The injection of TGF-β1-treated ADSCs-CM promoted the wound healing process in hairless mice. Taken together, our data indicated that TGF-β1-treated ADSCs-CM induced up-regulation of type I collagen and MMP-1, promoted the migration of skin fibroblasts, and thereby promoted the wound healing process in vivo. Our data indicate that TGF-β1-treated ADSCs-CM will be a component for a wound healing accelerating agent.
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Document Type: Research Article

Affiliations: Department of Dermatology, Keimyung University School of Medicine, Daegu 700-712, Korea

Publication date: December 1, 2010

More about this publication?
  • The International Journal of Molecular Medicine is a monthly, peer-reviewed journal devoted to the publication of high quality studies related to the molecular mechanisms of human disease. The journal welcomes research on all aspects of molecular and clinical research, ranging from biochemistry to immunology, pathology, genetics, human genomics, microbiology, molecular pathogenesis, molecular cardiology, molecular surgery and molecular psychology.

    The International Journal of Molecular Medicine aims to provide an insight for researchers within the community in regard to developing molecular tools and identifying molecular targets for the diagnosis and treatment of a diverse number of human diseases.
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