中国组织工程研究 ›› 2017, Vol. 21 ›› Issue (9): 1334-1339.doi: 10.3969/j.issn.2095-4344.2017.09.005

• 骨髓干细胞 bone marrow stem cells • 上一篇    下一篇

骨形态发生蛋白2和血管内皮生长因子165双基因转染骨髓基质干细胞的异位诱导成骨能力

周航宇,夏德林,甘生远,邵学磊   

  1. 西南医科大学附属口腔医院口腔颌面外科,四川省泸州市  646000
  • 出版日期:2017-03-28 发布日期:2017-03-31
  • 通讯作者: 夏德林,博士,教授,西南医科大学附属口腔医院口腔颌面外科,四川省泸州市 646000
  • 作者简介:周航宇,男,1984 年生,四川省泸县人,汉族,2011年泸州医学院附属口腔医院毕业,硕士,医师,主要从事口腔颌面外科肿瘤缺损修复的研究。
  • 基金资助:

    四川省科技厅应用基础研究资助项目(2008jy0014)

Ectopic osteogenesis of bone marrow stromal stem cells under bone morphogenetic protein 2/vascular endothelial growth factor 165 co-transfections

Zhou Hang-yu, Xia De-lin, Gan Sheng-yuan, Shao Xue-lei   

  1. Department of Oral and Maxllofacial Surgery, Hospital of Stomatology, Southwest Medical University, Luzhou 646000, Sichuan Province, China
  • Online:2017-03-28 Published:2017-03-31
  • Contact: Xia De-lin, M.D., Professor, Department of Oral and Maxllofacial Surgery, Hospital of Stomatology, Southwest Medical University, Luzhou 646000, Sichuan Province, China
  • About author:Zhou Hang-yu, Master, Physician, Department of Oral and Maxllofacial Surgery, Hospital of Stomatology, Southwest Medical University, Luzhou 646000, Sichuan Province, China
  • Supported by:

    the Applied Basic Research Fund of Sichuan Provincial Science and Technology Department, No. 2008jy0014

摘要:

文章快速阅读:

 

文题释义:
骨形态发生蛋白2和血管内皮生长因子165:
骨形态发生蛋白2是促进骨形成和诱导成骨细胞分化最重要的细胞外信号分子之一,已经用于体内诱导骨形成,有很好的临床应用前景。血管内皮生长因子是已知诱导血管再生作用最强的生长因子。血管内皮生长因子家族包括VEGF-A、B、C、D和胎盘形成因子,其中血管内皮生长因子A是研究较集中的因子,具有4种异构体,分别由121、165、189、206个氨基酸组成,血管内皮生长因子121含量最多,血管内皮生长因子165活性最强。
阳离子脂质体转染法:脂质体是磷脂分散在水中时形成双分子层,又称人工生物膜,可作为外源物质进入细胞,脂质体介导转染简便易行,成本适中,具有较高的转染率和较小的细胞毒性。

 

 

背景:应用骨形态发生蛋白2(BMP2)和血管内皮生长因子165(VEGF165)双基因转染骨髓基质干细胞诱导成骨,为组织工程骨的研究提供实验基础。
目的:探讨BMP2和VEGF165双基因转染大鼠骨髓基质干细胞的异位诱导成骨能力。
方法:4周龄SD大鼠4只,取股骨、胫骨骨髓,采用全骨髓贴壁法分离培养骨髓基质干细胞,取第3代骨髓基质干细胞分为5组,分别为未转染组、空载质粒组、BMP2单基因转染组、VEGF165单基因转染组、BMP2和VEGF165双基因共转染组,转染后48 h通过Western Blot检测BMP2和VEGF165蛋白表达变化,转染后7d检测各组细胞的碱性磷酸酶活性。

结果与结论:①BMP2和VEGF165双基因共转染组和BMP2单基因转染组中有大量的BMP2分泌。BMP2和VEGF165双基因共转染组和VEGF165单基因转染组中有大量的VEGF165分泌。双基因共转染组中BMP2和VEGF165蛋白水平与单基因转染组比较,差异有显著性意义(P < 0.05);②BMP2和VEGF165双基因共转染组中碱性磷酸酶活性最高,其次是BMP2单基因转染组,而VEGF165单基因转染组明显不如前两组,但是略高于空质粒转染组和未转染组。统计分析表明双基因共转染组与单基因转染组比较,差异有显著性意义(P < 0.05);③结果表明,BMP2和VEGF165双基因转染促进骨髓基质干细胞异位成骨的能力更强。

 

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
ORCID:
0000-0002-5861-6903(周航宇)

关键词: 干细胞, 骨髓干细胞, 骨髓基质干细胞, 双基因修饰, BMP2, VEGF165, 诱导成骨, 碱性磷酸酶, 脂质体

Abstract:

 

BACKGROUND: Double gene transfection using bone morphogenetic protein 2 (BMP2) and vascular endothelial growth factor 165 (VEGF165) for bone marrow stromal stem cells (BMSCs) to induce osteogenesis provides experimental basis for the study on tissue engineering bone.
OBJECTIVE: To investigate the ability of BMP2 and VEGF165 double gene modified rat BMSCs to induce osteogenesis.
METHODS: BMSCs were isolated from the femur and tibia of four 4-week-old Sprague-Dawley rats by whole bone marrow adherent culture. Passage 3 BMSCs were randomized into five groups: non-transfection group, empty plasmid group, BMP2 transfection group, VEGF165 transfection group, BMP2 and BMP2/VEGF165 transfection group (co-transfection group). Then, western blot assay was used to detect expression of BMP2 and VEGF165 at 48 hours after transfection, and the activity of alkaline phosphatase was detected in each group at 7 days after transfection.

RESULTS AND CONCLUSION: Highly expressed BMP2 in BMP2 and co-transfection groups and highly expressed VEGF165 in VEGF165 and co-transfection groups were found after transfection. The expression of BMP2 or VEGF165 in the co-transfection group was significantly higher than that in the BMP2 or VEGF165 transfection group after transfection, respectively (P < 0.05). Western blot results showed that the activity of alkaline phosphatase was ranked as: co-transfection group > BMP2 transfection group > VEGF165 transfection group > empty plasmid group and non-transfection group. There was a significant difference in the activity of alkaline phosphatase between co-transfection group and any of single gene transfection groups (P < 0.05). To conclude, BMP2/VEGF165 co-transfection promotes the ectopic osteogenesis of BMSCs.

 

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

Key words: Stem Cells, Bone Marrow, Bone Morphogenetic Proteins, Vascular Endothelial Growth Factors, Alkaline Phosphatase, Tissue Engineering

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