中国组织工程研究 ›› 2014, Vol. 18 ›› Issue (6): 821-828.doi: 10.3969/j.issn.2095-4344.2014.06.001

• 骨髓干细胞 bone marrow stem cells •    下一篇

重组慢病毒载体转染羊骨髓间充质干细胞及成骨基因表达量的变化

韩祥祯1,何惠宇1,胡 杨1,巴娇娇1,王欢欢1,米 雪1,阿布力孜•阿布杜拉2   

  1. 1新疆医科大学第一附属医院口腔修复科,新疆维吾尔自治区乌鲁木齐市 830054;2新疆医科大学地方病重点分子生物学实验室,新疆维吾尔自治区乌鲁木齐市 830054
  • 修回日期:2013-12-25 出版日期:2014-02-05 发布日期:2014-02-05
  • 通讯作者: 何惠宇,博士,主任医师,硕士生导师,新疆医科大学第一附属医院口腔修复科,新疆维吾尔自治区乌鲁木齐市 830054
  • 作者简介:韩祥祯,男,1987年生,河南省滑县人,新疆医科大学在读硕士,主要从事口腔修复学临床及基础研究工作。
  • 基金资助:

    国家自然科学基金项目(81060088):三维打印构建组织工程化牙槽骨的实验研究;新疆维吾尔自治区自然科学基金(2011211A073):荧光蛋白标记的组织工程骨修复颌骨缺损及其成骨能力的观测研究;新疆医科大学第一附属医院院内项目(2012ZZGC01):组织工程牙支架材料粘结剂改性及力学性能的实验研究

Recombinant lentiviral vector transfected sheep bone marrow mesenchymal stem cells and osteogenic gene expression changes

Han Xiang-zhen1, He Hui-yu1, Hu Yang1, Ba Jiao-jiao1, Wang Huan-huan1, Mi Xue1, Abulizi•Abudula2   

  1. 1Department of Prosthodontics, First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, Xinjiang Uygur Autonomous Region, China; 2Molecular Biology Laboratory of Endemic Diseases, Xinjiang Medical University, Urumqi 830054, Xinjiang Uygur Autonomous Region, China
  • Revised:2013-12-25 Online:2014-02-05 Published:2014-02-05
  • Contact: He Hui-yu, M.D., Chief physician, Master’s supervisor, Department of Prosthodontics, First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, Xinjiang Uygur Autonomous Region, China
  • About author:Han Xiang-zhen, Studying for master’s degree, Department of Prosthodontics, First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, Xinjiang Uygur Autonomous Region, China
  • Supported by:

     the National Natural Science Foundation of China, No. 81060088; the Natural Science Foundation of Xinjiang Uygur Autonomous Region, No. 2011211A073; the grant from the First Affiliated Hospital of Xinjiang Uygur Autonomous Region, No. 2012ZZGC01

摘要:

背景:碱性成纤维细胞生长因子具有促进骨髓基质细胞分裂增殖作用,而骨形态发生蛋白2在诱导新骨形成方面有重要的研究意义。

目的:分析骨形态发生蛋白2和碱性成纤维细胞生长因子基因单独和联合转染对体外培养的骨髓间充质干细胞的增殖和骨向分化的影响,比较Ⅰ型胶原蛋白、骨钙蛋白、骨桥蛋白等非特异性成骨基因于转染前后骨髓间充质干细胞相对表达量的差别,为构建组织工程骨的种子细胞做理论依据。
方法:构建碱性成纤维细胞生长因子、骨形态发生蛋白2慢病毒载体,分别转染羊骨髓间充质干细胞,得到碱性成纤维细胞生长因子组、骨形态发生蛋白2组、联合组、对照组细胞,提取RNA后采用实时定量PCR的方法检测Ⅰ型胶原蛋白、骨钙蛋白、骨桥蛋白等非特异性成骨基因的mRNA水平相对表达量的变化。

结果与结论:对照组、碱性成纤维细胞生长因子、骨形态发生蛋白2及联合组4组间非特异性成骨基因表达量存在明显差异(P < 0.05),且碱性成纤维细胞生长因子和骨形态发生蛋白2具有交互作用(P < 0.05),碱性成纤维细胞生长因子、骨形态发生蛋白2联合组的Ⅰ型胶原蛋白和骨钙蛋白基因表达量明显高于其他3组,且差异有显著性意义(P < 0.05);但是骨桥蛋白基因中差异无显著性意义(P > 0.05)。体外实验结果显示联合转染组中的Ⅰ型胶原蛋白、骨钙蛋白、骨桥蛋白等非特异性成骨基因mRNA水平相对表达量较多,该组细胞的成骨功能最强,适合作为组织工程骨的种子细胞。


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


全文链接:

关键词: 干细胞, 骨髓干细胞, 骨髓间充质干细胞, 碱性成纤维细胞生长因子, 骨形态发生蛋白2, 种子细胞, Ⅰ型胶原, 骨钙蛋白, 骨桥蛋白, 国家自然科学基金

Abstract:

 BACKGROUND:Basic fibroblast growth factor (bFGF) can promote the proliferation of bone marrow stromal cells, and bone morphogenetic protein-2 (BMP-2) has an important significance in the induction of new bone formation.

OBJECTIVE: To analyze the effects of bFGF, BMP-2 and their co-transfection on the proliferation and osteogenic differentiation of bone marrow mesenchymal stem cells and to compare the relative expressions of collagen I, osteocalcin and osteopontin before and after cell transfection, thereby providing theoretical implications for seed cells in the construction of tissue-engineered bone.
METHODS:Lentiviral vectors carrying bFGF and BMP-2 were constructed to transfect sheep bone marrow mesenchymal stem cells. Cells were divided into four groups: bFGF group, BMP-2 group, co-transfection group and control group. The RNA was extracted using real-time quantitative PCR to detect mRNA levels of collagen I, osteocalcin, and osteopontin.

RESULTS AND CONCLUSION: Significant difference in non-specific osteogenic gene expressions was found among the four groups (P < 0.05). bFGF and BMP-2 showed an interaction (P < 0.05). Expressions of collagen I and osteocalcin in the co-tranfection group were higher than those in the other three groups (P < 0.05), but osteopontin expression exhibited no difference (P > 0.05). In vitro experiments showed that the relative expression of collagen I, osteocalcin and osteopontin were higher in the co-transfection group, indicating the cells from the co-transfection group have strongest osteogenic capacity that are suitable for seed cells for bone tissue engineering.


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


全文链接:

Key words:  stem cells, mesenchymal stem cells, fibroblast growth factor 2, bone morphogenetic proteins, osteoblasts

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