中国组织工程研究 ›› 2014, Vol. 18 ›› Issue (37): 5911-5915.doi: 10.3969/j.issn.2095-4344.2014.37.002

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

慢病毒介导重组质粒转染兔下颌骨骨髓间充质干细胞

刘晓昌1,赵英华2,杨子桧3,王  磊3   

  1. 1解放军第四军医大学学员旅12连5班2011级口腔专业,陕西省西安市  710032
    2西安交通大学口腔医院修复科,陕西省西安市  710032
    3解放军第四军医大学口腔医院口腔颌面外科,陕西省西安市  710032
  • 修回日期:2014-08-22 出版日期:2014-09-03 发布日期:2014-09-03
  • 通讯作者: 王磊,解放军第四军医大学口腔医院口腔颌面外科,陕西省西安市 710032
  • 作者简介:刘晓昌,男,1993年生,山东省东营市人,汉族,本科在读。
  • 基金资助:

    国家自然科学基金项目(81270015)

Human nerve growth factor beta-modified bone marrow mesenchymal stem cells from the rabbit mandible by transfection of lentiviral vectors

Liu Xiao-chang1, Zhao Ying-hua2, Yang Zi-gui3, Wang Lei3   

  1. 1Fourth Military Medical University of PLA, Xi’an 710032, Shaanxi Province, China
    2Department of Prosthodontics, Stomatological Hospital of Xi’an Jiaotong University, Xi’an 710032, Shaanxi Province, China
    3Department of Oral and Maxillofacial Surgery, Fourth Military Medical University of PLA, Xi’an 710032, Shaanxi Province, China
  • Revised:2014-08-22 Online:2014-09-03 Published:2014-09-03
  • Contact: Wang Lei, Department of Oral and Maxillofacial Surgery, Fourth Military Medical University of PLA, Xi’an 710032, Shaanxi Province, China
  • About author:Liu Xiao-chang, Fourth Military Medical University of PLA, Xi’an 710032, Shaanxi Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81270015

摘要:

背景:中枢或周围神经系统损伤是临床中常见的问题,且治疗效果尚不理想。神经生长因子在神经元细胞损伤修复和生长发育方面具有重要作用,但局部应用的神经生长因子存在易于失活、流失的缺点。
目的:旨在通过慢病毒载体构建人神经生长因子β重组质粒,转染荧光兔下颌骨骨髓间充质干细胞并研究其生物学活性。
方法:采用慢病毒作为载体,经Hind Ⅲ+NotⅠ双酶切法构建含目的基因的pDC316-hNGFβ-mCMV-EGFP质粒。分离和培养兔下颌骨骨髓间充质干细胞,经重组质粒转染后,应用酶联免疫吸附法检测骨髓间充质干细胞分泌人神经生长因子β的情况。
结果与结论:成功构建了pDC316-hNGFβ-mCMV-EGFP真核表达载体,经酶切鉴定和测序均证明质粒构建完整、正确。质粒转染后兔下颌骨骨髓间充质干细胞在荧光显微镜下可以发出绿色荧光,且荧光强度不随培养时间延长而衰退。转染后兔下颌骨骨髓间充质干细胞表达的人神经生长因子β可以在第7天仍维持在 25 μg/L水平,生物学活性显著提升。


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, 下颌骨, 骨髓间充质干细胞, 神经生长因子, 慢病毒, 基因转染, 国家自然科学基金

Abstract:

BACKGROUND: Central nerve damage and peripheral nerve injury are common clinical problems that have no ideal treatment. Nerve growth factor has an important role in neuronal repairing and growth. But its local injections may have shorts of inactivation and loss.
OBJECTIVE: To construct human nerve growth factor beta recombinant plasmids, which are transfected into bone marrow mesenchymal stem cells from the rabbit mandible by lentiviral vectors, and to investigate the bioactivity of human nerve growth factor beta.
METHODS: pDC316-hNGFβ-mCMV-EGFP plasmids were constructed via lentiviral vectors using Hind III+Not I digestion. Bone marrow mesenchymal stem cells from the rabbit mandible were isolated and cultured, and then transfected by recombinant plasmids. The expression of human nerve growth factor beta in transfected cells was detected by ELISA method.
RESULTS AND CONCLUSION: pDC316-hNGFβ-mCMV-EGFP plasmids were proved to be constructed successfully by gene sequencing and enzyme identification. The transfected cells under a fluorescence microscope emitted green fluorescence, and the fluorescence intensity had no change with incubation time. The expression of human nerve growth factor beta was maintained at a level of 25 μg/L at 7 days after cell transfection, and the bioacitivty was increased significnalty.


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: bone marrow, mesenchymal stem cells, mandible, nerve growth factor, lentivirus infections

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