中国组织工程研究 ›› 2015, Vol. 19 ›› Issue (10): 1539-1543.doi: 10.3969/j.issn.2095-4344.2015.10.012

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

红色荧光基因慢病毒转染骨髓间充质干细胞:表达21 d对细胞活性无影响

尹 飚,杨逸禧,杨 波,王 簕,黎双庆,杨富国   

  1. 广州医科大学附属第三医院骨科,广东省广州市  510150
  • 出版日期:2015-03-05 发布日期:2015-03-05
  • 通讯作者: 杨波,主任医师,教授,广州医科大学附属第三医院骨科,广东省广州市 510150
  • 作者简介:尹飚,男,1971年生,江西省吉安市人,汉族,2000年解放军第一军医大学毕业,硕士,副主任医师,主要从事骨关节与脊柱疾病的研究。
  • 基金资助:

    国家青年科学基金项目(31200726);广州市应用基础研究项目(2013J4100101)

Lentiviral vectors with red fluorescent proteins for transfection of human bone marrow mesenchymal stem cells: the red fluorescent protein can express for 21 consecutive days and exert no effects on cell viability

Yin Biao, Yang Yi-xi, Yang Bo, Wang Le, Li Shuang-qing, Yang Fu-guo   

  1. Department of Orthopedics, the Third Affiliated Hospital of Guangzhou Medical University, Guangzhou 510150, Guangdong Province, China
  • Online:2015-03-05 Published:2015-03-05
  • Contact: Yang Bo, Chief physician, Professor, Department of Orthopedics, the Third Affiliated Hospital of Guangzhou Medical University, Guangzhou 510150, Guangdong Province, China
  • About author:Yin Biao, Master, Associate chief physician, Department of Orthopedics, the Third Affiliated Hospital of Guangzhou Medical University, Guangzhou 510150, Guangdong Province, China
  • Supported by:

    the National Natural Science Foundation of China for the Youth, No. 31200726; the Basic Research for Application of Guangzhou City, No. 2013J4100101

摘要:

背景:掌握转染的最佳感染复数和产生较强荧光强度的时间,可为后期观察人骨髓间充质干细胞在动物模型体内的示踪奠定基础。

 

目的:探讨HIV-1来源的慢病毒携带增强型红色荧光蛋白转染人骨髓间充质干细胞的可行性。

 

方法:将第4代人骨髓间充质干细胞分成空白组和感染复数为 2,3,4组,以细胞5.0×105个接种于12孔培养皿,添加含有体积分数为1%胎牛血清的成人骨髓间质干细胞完全培养基1 mL。调整慢病毒携带增强型红色荧光蛋白感染滴度为1.0×1011 TU/L,加入各组培养皿中病毒液体积分别为10,15,20 µL,感染复数分别为2,3,4,空白组加入10 μL PBS。转染后24,72 h荧光倒置显微镜观察细胞红色荧光表达情况并计算出转染率。

 

结果与结论:增强型红色荧光蛋白在骨髓间充质干细胞中稳定表达,转染后24 h倒置荧光显微镜下可见红色荧光,72 h荧光达到最强,细胞转染率与感染复数值呈线性增长关系。转染后21 d内,各转染实验组的人骨髓间充质干细胞数量与空白组比较差异无显著性意义(P > 0.05),以上结果提示采用 HIV-1来源的慢病毒载体介导增强型红色荧光蛋白转染标记人骨髓间充质干细胞是可行的,当感染复数为4时转染效率高并可持续表达至少21 d,且标记后对其增殖活性无影响。

 

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, 增强型红色荧光基因, 人骨髓间充质干细胞, 转染, 国家自然科学基金

Abstract:

 BACKGROUND: To grasp the optimal multiplicity of infection (MOI) and the time when stronger fluorescence intensities produce can lay the foundation for tracing observation of human bone marrow mesenchymal stem cells in vivo in animal models.

OBJECTIVE: To investigate the feasibility of HIV-1 lentivirus carrying enhanced red fluorescent protein to transfect human bone marrow mesenchymal stem cells.
METHODS: Human bone marrow mesenchymal stem cells at passage 4 were divided into blank group and MOI 2, 3, 4 groups. After that, the cells were seeded into 12-well plates at a density of 5.0×105, and cultured in 1 mL complete medium for adult bone marrow mesenchymal stem cells containing 1% fetal bovine serum. The infectious titer of lentivirus-carried enhanced red fluorescent protein was adjusted to 1.0×1011 TU/L. Lentivirus solution 10, 15, 20 μL at MOI=2, 3, 4 were respectively added into the MOI 2, 3, 4 groups, and 10 μL PBS was added into the blank group. At 24 and 72 hours after transfection, the expression of red fluorescence was observed under an inverted fluorescence microscope and the transfection efficiency was calculated.
RESULTS AND CONCLUSION: Enhanced red fluorescent protein expressed stably in bone marrow mesenchymal stem cells. At 24 hours after transfection, red fluorescence could be seen under the inverted fluorescence microscope and achieved the peak at 72 hours after transfection. Within 21 days after transfection, there were no differences in the number of human bone marrow mesenchymal stem cells between the MOI 2, 3, 4 groups and blank group (P > 0.05). These results show that the HIV-1 lentivirus carrying enhanced red fluorescent protein is feasible to transfect human bone marrow mesenchymal stem cells, with the highest transfection efficiency when the MOI=4, which can express at least for 21 days and have no effects on the proliferative activity of labeled cells.

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, Lentivirus Infections

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