中国组织工程研究 ›› 2014, Vol. 18 ›› Issue (50): 8054-8060.doi: 10.3969/j.issn.2095-4344.2014.50.004

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

sox9和LMP1基因慢病毒载体共转染兔骨髓间充质干细胞后的表达

刘  伟1,王  杰1,幸永明1,李纯志1,陈昌伟1,赵  宏1,龚德军2   

  1. 1解放军第113医院骨科,浙江省宁波市  315040;2解放军第二军医大学附属长海医院胸心外科实验室,上海市  200433
  • 收稿日期:2014-11-02 出版日期:2014-12-03 发布日期:2014-12-03
  • 作者简介:刘伟,男,1982年生,四川省眉山市人,汉族,2009年解放军第二军医大学毕业,博士,主治医师,主要从事脊柱外科和组织工程研究。
  • 基金资助:

    南京军区医学科技创新重点课题 (12Z06),课题名称:LMP-1和SOX9共修饰BMSCs后复合血小板凝胶生物支架构建组织工程髓核的实验研究

Cotransfection of sox9 and LMP1 genes in rabbit bone mesenchymal stem cells through lentivirus vectors in vitro

Liu Wei1, Wang Jie1, Xing Yong-ming1, Li Chun-zhi1, Chen Chang-wei1, Zhao Hong1, Gong De-jun2   

  1. 1Department of Orthopaedics, the 113th Hospital of PLA, Ningbo 315040, Zhejiang Province, China; 2Chest Cardiac Laboratory, Changhai Hospital Affiliated to the Second Military Medical University, Shanghai 200433, China
  • Received:2014-11-02 Online:2014-12-03 Published:2014-12-03
  • About author:Liu Wei, M.D., Attending physician, Department of Orthopaedics, the 113th Hospital of PLA,th Ningbo 315040, Zhejiang Province, China
  • Supported by:

    the Medical Innovation Project of Nanjing Military Region, No. 12Z06

摘要:

背景:与传统细胞因子诱导液诱导的方法相比,将基因通过慢病毒转染入宿主细胞,可以得到长期高效的持续表达,采取双/多基因共修饰治疗的策略,较采用单一的因子来诱导骨髓间充质干细胞向类髓核细胞方向转化可获得更好的效果。
目的:构建sox9基因慢病毒载体以及LMP1基因慢病毒载体,并共转染兔骨髓间充质干细胞,观察SOX9和LMP1基因的表达情况。
方法:双酶切从GeneArt提供的含sox9基因序列的质粒13ABIV6C_1366933并克隆到pLenti6.3_MCS_IRES2-EGFP载体,获得含sox9基因的质粒pLMIG-13GS0345-1。通过单链oligo设计及合成LMP1基因序列,并克隆到pLenti6.3_MCS_IRES2-DsRed-Monomer载体,获得含LMP1基因的质粒13GS0318-1。再通过293T细胞包装后获得绿色荧光蛋白标记的sox9基因慢病毒载体(Lenti-SOX9-GFP),以及红色荧光蛋白的LMP1基因慢病毒载体(Lenti-LMP1-RFP)。将Lenti-SOX9-GFP和Lenti-LMP1-RFP共转染兔骨髓间充质干细胞,观察sox9基因及LMP1基因的表达情况。
结果与结论:测序结果显示质粒pLMIG-13GS0345-1和13GS0318-1中的插入序列与基因库中sox9(NM_000346)及LMP1(AF345904.1)基因序列完全一致,成功构建Lenti-SOX9-GFP和Lenti-LMP1-RFP慢病毒载体。Lenti-SOX9-GFP和Lenti-LMP1-RFP共转染兔骨髓间充质干细胞后同一视野下可观察到绿色和红色荧光蛋白的共表达,RT-PCR与Western Blot检测结果证明Lenti-SOX9-GFP和Lenti-LMP1-RFP可成功高效共转染目的细胞并可在mRNA及蛋白水平同时表达SOX9及LMP1。结果说明实验成功构建了绿色荧光蛋白标记的携带sox9基因的Lenti-SOX9-GFP慢病毒载体,以及红色荧光蛋白的携带LMP1基因的Lenti-LMP1-RFP慢病毒载体,为sox9和LMP1基因共修饰组织工程髓核的研究提供前期实验基础。


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, 慢病毒, sox9基因, LMP1基因, 椎间盘, 髓核细胞, 共转染, 组织工程

Abstract:

BACKGROUND: Compared with the traditional method of cytokines, gene transfection into a host cell by lentivirus can achieve a sustained long-term efficient expression. Double/multiple gene co-modification therapy is superior to single gene therapy to induce the differentiation of bone marrow mesenchymal stem cells into nucleus pulposus-like cells.
OBJECTIVE: To build two recombinant lentivirus vectors separately expressing sox9 and LMP1 genes, and then co-transfect rabbit bone marrow mesenchymal stem cells for observing the expression of sox9 and LMP1 genes.
METHODS: Double enzyme digestion was performed for plasmid 13abiv6c_1366933 containing sox9 gene sequences provided by GeneArt, and the sox9 gene was cloned into pLenti6.3_MCS_IRES2-EGFP carrier to harvest the plasmid pLMIG-13GS0345-1 including sox9 gene. Through single oligo design and synthesis of LMP1 gene sequences that were cloned into pLenti6.3_MCS_IRES2 DsRed-Monomer carrier, the plasmid gs0318 13-1 including LMP1 gene was obtained. The plasmids were packed by 293T cells to obtain the recombinant lentivirus vector carrying sox9 gene marked by green fluorescent protein markers (Lenti-SOX9-GFP) and the recombinant lentivirus vector carrying LMP1 gene marked by red fluorescent protein markers (Lenti-LMP1-RFP). The Lenti-SOX9-GFP and Lenti-LMP1-RFP were co-transfected into rabbit bone marrow mesenchymal stem cells to observe the expression of sox9 and LMP1 genes.
RESULTS AND CONCLUSION: Sequencing results showed that the insert sequences of plasmids pLMIG-13GS0345-1 and 13GS0318-1 were completely consistent with the sox9 gene (NM_000346) and LMP1 gene (AF345904.1) sequences in the Genbank respectively, indicating that the Lenti-SOX9-GFP and Lenti-LMP1-RFP were successfully constructed. The expression of green fluorescent protein and red fluorescent protein could be observed in the same view after co-transfection of rabbit bone marrow mesenchymal stem cells by Lenti-SOX9-GFP and Lenti-LMP1-RFP. The RT-PCR and western blot assay results also proved that the Lenti-SOX9-GFP and Lenti-LMP1-RFP could successfully and efficiently co-transfect the bone marrow mesenchymal stem cells, and mRNA and protein expressions of SOX9 and LMP1 gene could be successfully observed. The recombinant lentivirus vectors Lenti-SOX9-GFP and Lenti-LMP1-RFP were successfully constructed and successfully co-expressed in the rabbit bone marrow mesenchymal stem cells, which provided preliminary experimental basis for further research in nucleus pulposus 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, lentivirus infections, SOX9 transcription factor

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