吉林大学学报(医学版) ›› 2015, Vol. 41 ›› Issue (02): 218-224.doi: 10.13481/j.1671-587x.20150203

• 基础研究 • 上一篇    下一篇

内皮祖细胞条件培养基对间充质干细胞增殖和成骨分化的影响及其机制

冯文磊1, 张猛1, 徐芳洁2, 印双红2, 王艳杰1, 陈雪玲2, 吴向未1   

  1. 1. 石河子大学医学院第一附属医院普外科, 新疆 石河子 832008;
    2. 石河子大学医学院免疫学教研室, 新疆 石河子 832002
  • 收稿日期:2014-08-19 出版日期:2015-03-28 发布日期:2015-04-04
  • 通讯作者: 吴向未, 教授, 博士研究生导师(Tel:0993-2859449, E-mail:wxwshz@126.com) E-mail:wxwshz@126.com
  • 作者简介:冯文磊(1987-), 男, 河南省商丘市人, 在读医学硕士, 主要从事干细胞与再生医学基础方面的研究。
  • 基金资助:

    国家自然科学基金资助课题(31271458);人力资源和社会保障部留学回国人员科技活动项目资助课题(RSLX201201);兵团科技援疆项目资助课题(2011AB034,2014AB047)

Effects of endothelial progenitor cells conditioned medium on proliferation and osteogenic differentiation of mesenchymal stem cells and their mechanisms

FENG Wenlei1, ZHANG Meng1, XU Fangjie2, YIN Shuanghong2, WANG Yanjie1, CHEN Xueling2, WU Xiangwei1   

  1. 1. Department of General Surgery, First Affiliated Hospital, College of Medical Sciences, Shihezi University, Shihezi 832008, China;
    2. Department of Immunology, College of Medical Sciences, Shihezi University, Shihezi 832002, China
  • Received:2014-08-19 Online:2015-03-28 Published:2015-04-04

摘要:

目的:探讨小鼠骨髓来源的内皮祖细胞(EPCs)条件培养基(CM) 对同源间充质干细胞(MSCs)增殖和成骨分化功能的影响,并阐明其作用机制。方法:小鼠骨髓细胞经差速贴壁法结合专用培养基分别培养扩增MSCs和EPCs,采用流式细胞术(FCM)检测MSCs和EPCs表面标记物,以成骨、成脂和成软骨诱导分化对MSCs进行功能鉴定,以成血管对EPCs进行功能鉴定。将MSCs分为0% EPCs-CM组(对照组,采用LG-DMEM培养)、50% EPCs-CM组(采用50% EPCs-CM+50% LG-DMEM培养)和100% EPCs-CM 组(采用100% EPCs-CM培养)。采用MTT比色法检测各组MSCs的增殖活性;采用茜素红染色检测各组MSCs的成骨分化能力。结果:FCM法检测,第3代MSCs高表达Sca-1、CD29, 低表达CD45、CD11b;经诱导可向成骨、成软骨和成脂方向分化。第3代EPCs 高表达CD34、CD133和VEGFR2;在铺有基质胶的96孔培养板中可形成血管样结构。与对照组比较,50% EPCs-CM组和100% EPCs-CM组MSCs增殖活性明显增加,且呈浓度依赖性(P<0.05)。茜草色素红染色法检测,培养21 d后50%和100% EPCs-CM组MSCs的钙结节数量和钙盐沉积均高于对照组(P<0.05)。结论:利用差速贴壁法可同时分离MSCs和EPCs,EPCs-CM能促进MSCs 的增殖和成骨分化。

关键词: 内皮祖细胞, 间充质干细胞, 条件培养基, 细胞增殖, 成骨分化

Abstract:

Objective To investigate the effects of bone marrow-derived endothelial progenitor cells(EPCs) conditioned medium(EPCs-CM) on the proliferation and osteogenic differentiation of mesenchymal stem cells(MSCs),and to clarify the mechanisms.Methods The EPCs and MSCs were isolated from bone marrow of the mice using differential adhesion method.The surface markers of EPCs and MSCs were identified by flow cytometry (FCM).The osteogenic,chondrogenic,and adipogenic induction differentiation abilities of the MSCs were identified.The function of EPCs was identified by tube formation experiment.The MSCs were divided into 0% EPCs-CM group(control group,cultured with LG-DMEM),50% EPCs-CM group(cultured with 50% EPGs-CM and 50% LG-DMEM),and 100% EPCs-CM group(cultured with 100% EPCs-CM).The proliferation activities of the MSCs in various groups were detected by MTT method;the osteogenic differentiation abilities of the MSCs in various groups were detected by Alizarin red staining.Results The FCM results showed that the third passage MSCs were strongly positive for Sca-1,CD29 and negative for CD45,CD11b and could be induced to complete differentiation process into osteoblasts and adipocytes and chondrocytes.The third passage EPCs cultured on Matrigel showed tube-like structures and highly expressed CD34,CD133 and VEGFR2.Compared with control group,the proliferation activities of the MSCs in 50% EPCs-CM group and 100% EPCs-CM group were increased(P<0.05),which presented a dose-dependent manner.The Alizarin red staining results showed the number of mineralized nodules and calcium deposition of the MSCs in 50% EPCs-CM group and 100% EPCs-CM group were higher than those in control group after cultured for 21 d(P<0.05).Conclusion The method of differential adhesion can simultaneously isolate the MSCs and EPCs.EPCs-CM can promote the proliferation and osteogenic differentiation of the MSCs.

Key words: mesenchymal stem cells, endothelial progenitor cells, conditioned medium, cell proliferation, osteogenic differentiation

中图分类号: 

  • R683