Chinese Journal of Tissue Engineering Research ›› 2015, Vol. 19 ›› Issue (1): 37-43.doi: 10.3969/j.issn.2095-4344.2015.01.007

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Platelet-derived growth factor promotes skin wound healing by regulating the migration of bone marrow mesenchymal stem cells to wounds

Ding Yue, Xu Hai-long, Xie Hong   

  1. Department of Stomatology, the People’s Hospital of Liaoning Province, Shenyang 110016, Liaoning Province, China
  • Revised:2014-12-10 Online:2015-01-01 Published:2015-01-01
  • About author:Ding Yue, Master, Associate chief physician, Department of Stomatology, the People’s Hospital of Liaoning Province, Shenyang 110016, Liaoning Province, China
  • Supported by:

    the Science and Technology Plan Project of Liaoning Province, No. 2013225021

Abstract:

BACKGROUND: Platelet-derived growth factor has the ability of wound repair, and relevant studies mainly focus on bone tissue repair. However, there are less studies about the effect of platelet-derived growth factors in skin wound healing.
OBJECTIVE: To investigate the role of platelet-derived growth factor to promote wound healing by the regulation of bone marrow mesenchymal stem cells to the wound.
METHODS: Bone marrow mesenchymal stem cells from rats were cultured. Immunofluorescence method was conducted to detect cell surface markers of CD34 and CD44 in bone marrow mesenchymal stem cells. Thirty healthy male SD rats were divided into five groups at random. Bone marrow mesenchymal stem cells labeled with PKH-26 were injected into the rat caudal vein in each group. The rats were anesthetized 1 week after injection. On the center of rat back, a 3-cm incision was made to establish a wound healing model. Different concentrations of platelet-derived growth factor were injected via multi-points on the skin wound after modeling, and the control group was treated with the same volume of normal saline. Skin wound tissues were taken for relevant parameter measurement at 14 days after injection.
RESULTS AND CONCLUSION: Under the fluorescence microscope, platelet-derived growth factor could induce the migration and accumulation of bone marrow mesenchymal stem cells to the trauma in a dose-dependent manner and promote the wound healing. Masson staining showed that, with the concentration increase, platelet-derived growth factors could reduce inflammatory cell infiltration and increase the number of collagen fibers. Results from western blot assay showed that platelet-derived growth factor could inhibit the expression of matrix metalloproteinase-1, promote the expression of tissue inhibitor of matrix metalloproteinase 1 in the wound, and inhibit the collagen degradation, thereby promoting skin wound healing indirectly.


中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程


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Key words: Bone Marrow, Mesenchymal Stem Cell Transplantation, Skin, Wounds and Injuries, Platelet-Derived Growth Factor

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