Chinese Journal of Tissue Engineering Research ›› 2014, Vol. 18 ›› Issue (20): 3158-3164.doi: 10.3969/j.issn.2095-4344.2014.20.009

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Stromal cell-derived factor-1 and endothelial progenitor cells improve neovascularization

Wu Yuan-bing1, Wang Yu-qi2, Fu Wei-guo2, Zhu Yun-feng1, Ge Hong-wei1   

  1. 1Department of Vascular Surgery, the Third Affiliated Hospital of Soochow University, Changzhou 213003, Jiangsu Province, China; 2Department of Vascular Surgery, Zhongshan Hospital Affiliated to Fudan University, Shanghai 200032, China
  • Received:2014-02-23 Online:2014-05-14 Published:2014-05-14
  • About author:Wu Yuan-bing, M.D., Associate chief physician, Department of Vascular Surgery, the Third Affiliated Hospital of Soochow University, Changzhou 213003, Jiangsu Province, China

Abstract:

BACKGROUND: The endothelial dysfunction is the pathogenesis of arteriosclerotic disease, the quantity and function of endothelial progenitor cells are decreased within the cycle, leading to a poor capacity of neovascularizatio, the efficacy of stem cell transplantation alone is unclear, the combination of cytokines and gene-modified stem cells is the hotspot.
OBJECTIVE: To observe the effect of stromal cell-derived factor-1 on the neovascularization after endothelial progenitor cells transplantation.
METHODS: Unilateral hindlimb ischemia model was established in 20 athymic nude mice, and the mice were randomly divided into four groups: combined group (intravenous endothelial progenitor cells+intramuscular stromal cell-derived factor-1), endothelial progenitor cells group (intravenous injection of endothelial progenitor cells), stromal cell-derived factor-1 group (intramuscular injection of stromal cell-derived factor-1), and blank control group (intramuscular M199). The skin temperature of ischemic hindlimbs and survival of animals after transplantation were observed. The ratio of capillary/skeletal muscle fiber was counted. The expression of CD31 and endothelial nitric oxide synthase were detected. 
RESULTS AND CONCLUSION: The fluorescence-labeled endothelial cells were embedded in ischemic hindlimb muscles after cell transplantation. Of the 20 nude mice, two mice died. The rate of ischemic hindlimb reserving was respectively 80%, 75%, 20% and 0 in combined group, endothelial progenitor cells group, stromal cell-derived factor-1 group, and blank control group. The capillary/muscle fiber ratio in combined group and endothelial progenitor cells group was higher than that of blank control group (P < 0.01). The combined group was greater than endothelial progenitor cells group, and endothelial progenitor cells group was greater than stromal cell-derived factor-1 group (P < 0.05). The capillary density in combined group and endothelial progenitor cells group were higher than that in blank control group  (P < 0.01), and stromal cell-derived factor-1 group was also more than blank control group (P < 0.05). The combined group was greater than endothelial progenitor cells group, and endothelial progenitor cells group was greater than stromal cell-derived factor-1 group (P < 0.05). The positive rate of endothelial nitric oxide synthase was 73.33% and 53.33% in combined group and endothelial progenitor cells group respectively (P > 0.05). Endothelial progenitor cells can migrate to ischemic tissues, endothelial progenitor cells transplantation can promote neovascularization, and stromal cell-derived factor-1 augments the neovascularization after cell transplantation, in which endothelial nitric oxide synthase is involved.



中国组织工程研究
杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程


全文链接:

Key words: cell transplantation, cytokines, neovascularization, physiologic, nitric oxide synthase

CLC Number: