中国组织工程研究 ›› 2013, Vol. 17 ›› Issue (14): 2517-2524.doi: 10.3969/j.issn.2095-4344.2013.14.007

• 脂肪干细胞 adipose-derived stem cells • 上一篇    下一篇

重组人骨形态发生蛋白2调节人脂肪间充质干细胞表达血管内皮生长因子

曹  鑫,金格勒,杨  毅,陈慧锦,殷  剑   

  1. 新疆医科大学第一附属医院VIP外二科,新疆维吾尔自治区乌鲁木齐市  830000
  • 收稿日期:2012-11-02 修回日期:2012-11-20 出版日期:2013-04-02 发布日期:2013-04-02
  • 通讯作者: 金格勒,博士,教授,主任医师,新疆医科大学第一附属医院VIP外二科,新疆维吾尔自治区乌鲁木齐市 830000 jingl81@yahoo.com.cn
  • 作者简介:曹鑫★,男,1985年生,山东省东营市人,汉族,新疆医科大学在读硕士,主要从事骨组织工程研究。 demonleaf@163.com
  • 基金资助:

    新疆自治区青年自然科学基金资助项目(2012 211B32);高校博士点基金资助项目(20116517120001);科技支疆项目基金资助项目(201191262)。

Recombinant human bone morphogenetic protein-2 adjusts expression of vascular endothelial growth factor in human adipose-derived mesenchymal stem cells

Cao Xin, Jin Ge-le, Yang Yi, Chen Hui-jin, Yin Jian   

  1. VIP Ward, Second Department of General Surgery, the First Affiliated Hospital of Xinjiang Medical University, Urumqi  830000, Xinjiang Uygur Autonomous Region, China
  • Received:2012-11-02 Revised:2012-11-20 Online:2013-04-02 Published:2013-04-02
  • Contact: Jin Ge-le, Doctor, Professor, Chief physician, VIP Ward, Second Department of General Surgery, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830000, Xinjiang Uygur Autonomous Region, China jingl81@yahoo.com.cn
  • About author:Cao Xin★, Studying for master’s degree, VIP Ward, Second Department of General Surgery, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830000, Xinjiang Uygur Autonomous Region, China demonleaf@163.com
  • Supported by:

    Natural Science Foundation-Funded Youth Project in Xinjiang Autonomous Region, No. 2012211B32; Doctoral Fund of Universities, No. 20116517120001; Project of Supporting Xinxiang with Science and Technology, No. 201191262

摘要:

背景:重组人骨形态发生蛋白2可以促进组织工程骨血管化,但是对于其作用于人体细胞时的生物学规律不明确。目前对于重组人骨形态发生蛋白2调节人体细胞血管内皮生长因子表达的规律国内还未见相关报道。
目的:从基因和蛋白水平观察比较不同时间点重组人骨形态发生蛋白2诱导下人脂肪间充质干细胞血管内皮生长因子的表达。
方法:从成人脂肪组织中分离培养脂肪间充质干细胞,取第3代细胞用于实验,分为诱导组和对照组。诱导组采用终浓度为100 μg/L重组人骨形态发生蛋白2诱导人脂肪间充质干细胞,分别诱导3,6,12,18,24,36,48 h后收集样本,用RT-PCR和ELISA分别从基因水平和蛋白水平检测血管内皮生长因子的表达,并与空白对照组比较。
结果与结论:重组人骨形态发生蛋白2调节人脂肪间充质干细胞表达血管内皮生长因子具有时间依赖性,在不同时间点血管内皮生长因子表达量不同。与空白对照组相比,3-6 h时间段重组人骨形态发生蛋白2抑制血管内皮生长因子表达(P < 0.05),18-24 h时间段重组人骨形态发生蛋白2促进血管内皮生长因子表达(P < 0.05),当利用重组人骨形态发生蛋白2促进组织工程骨血管化时这两个时间段应当引起特别关注。

关键词: 干细胞, 脂肪干细胞, 脂肪间充质干细胞, 重组人骨形态发生蛋白2, 血管内皮生长因子, 时间依赖性, 基因水平, 蛋白水平, 细胞分离, 细胞培养, RT-PCR, ELISA, 省级基金, 干细胞图片文章

Abstract:

BACKGROUND: Recombinant bone morphogenetic protein-2 can promote tissue engineering bone vascularization, but its biological rules targeting human cells are not clear. At present, there is in which report on recombinant bone morphogenetic protein-2 adjusts the expression of vascular endothelial growth factor in human cells. 
OBJECTIVE: To observe and compare the expression of vascular endothelial growth factor in human adipose-derived mesenchymal stem cells on gene level and protein level at different time points after induced with human recombinant bone morphogenetic protein-2.  
METHODS: Adipose-derived mesenchymal stem cells were separated from adult human adipose tissues and cultured until passage 3, then divided into induced group and control group. The cells in the induced group were induced by human recombinant bone morphogenetic protein-2 which final concentration was 100 μg/L, then the samples were collected at 3, 6, 12, 18, 24, 36 and 48 hours after induction. Reverse transcription-PCR and enzyme-linked immunosorbent assay were used to detect vascular endothelial growth factor expression on gene level and protein level, compared with the control group.
RESULTS AND CONCLUSION: Human recombinant bone morphogenetic protein-2 adjusted vascular endothelial growth factor expression of adipose mesenchymal stem cells in a time-dependent manner, and the expression of vascular endothelial growth factor changed at different time points. Compared with the control group, human recombinant bone morphogenetic protein-2 could suppress vascular endothelial growth factor expression at 3-6 hours (P < 0.05), while at 18-24 hours, human recombinant bone morphogenetic protein-2 could promote vascular endothelial growth factor expression (P < 0.05). These two time periods should be paid attention when using human recombinant bone morphogenetic protein-2 to promote tissue engineering bone vascularization.

Key words: stem cells, adipose-derived stem cells, adipose-derived mesenchymal stem cells, human recombinant bone morphogenetic protein-2, vascular endothelial growth factor, time-dependent, gene level, protein level, cell isolation, cell culture, reverse transcription-PCR, enzyme-linked immunosorbent assay, provincial grants-supported paper, stem cell photographs-containing paper

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