中国组织工程研究 ›› 2017, Vol. 21 ›› Issue (29): 4642-4647.doi: 10.3969/j.issn.2095-4344.2017.29.009

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

三种携带GFP慢病毒转染兔骨髓间充质干细胞的效果

肖 渝,李彦林,王 坤,李龙滕,闫祥甲,蒙旭晗   

  1. 昆明医科大学第一附属医院运动医学科,云南省昆明市 650000
  • 修回日期:2017-05-13 出版日期:2017-10-18 发布日期:2017-11-08
  • 通讯作者: 李彦林,博士,主任医师,昆明医科大学第一附属医院运动医学科,云南省昆明市 650000
  • 作者简介:肖渝,男,1990年生,云南省昆明市人,汉族,在读硕士,主要从事骨与关节疾病研究。
  • 基金资助:

    国家自然科学基金(81460340);云南省骨关节疾病诊疗省创新团队项目(2014HC1018);医疗卫生内设机构研究项目(2014NS161)

Transfection efficiency of three different lentiviruses with green fluorescent protein gene to transfect rabbit bone marrow mesenchymal stem cells

Xiao Yu, Li Yan-lin, Wang Kun, Li Long-teng, Yan Xiang-jia, Meng Xu-han   

  1. Department of Sport Medicine, the First Affiliated Hospital of Kunming Medical University, Kunming 650000, Yunnan Province, China
  • Revised:2017-05-13 Online:2017-10-18 Published:2017-11-08
  • Contact: Li Yan-lin, M.D., Chief physician, Department of Sport Medicine, the First Affiliated Hospital of Kunming Medical University, Kunming 650000, Yunnan Province, China
  • About author:Xiao Yu, Studying for master’s degree, Department of Sport Medicine, the First Affiliated Hospital of Kunming Medical University, Kunming 650000, Yunnan Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81460340; the Yunnan Provincial Innovation Team Project for Diagnosis and Treatment of Bone and Joint Disease, No. 2014HC1018; the Research Project of Medical and Health Institutions, No. 2014NS161

摘要:

文章快速阅读:

文题释义:
绿色荧光蛋白:
发现于维多利亚水母,是由238个氨基酸组成,经紫外光激发后可发出峰值为509 nm的绿色荧光,广泛用于基因工程中的基因表达检测、细胞示踪等。经过改良,研制出了增强型绿色荧光蛋白及其他颜色的荧光蛋白变体。
慢病毒:属反转录病毒,具有长期潜伏能力,可以持续感染。目前发现有5种亚型,每种亚型对应的易感物种不同。实验研究所用慢病毒多为HIV-1型,是去毒性后的载体病毒,在基因序列上有一段开放阅读框,允许剪切、插入目的基因,在基因工程、示踪方面有广泛的应用。

 

摘要
背景:
研究不同慢病毒对同一骨髓来源间充质干细胞的转染效果,筛选合适的细胞转染工具。
目的:探究3种慢病毒对兔骨髓间充质干细胞转染效果的差异。 
方法:选择2周龄日本大耳白兔,髂骨穿刺抽取骨髓液,采用密度梯度离心法提取骨髓间充质干细胞,流式细胞仪检测细胞表面标志物表达。分别用pTomo-GFP慢病毒、Ad-GFP慢病毒、lenti-GFP慢病毒转染骨髓间充质干细胞,流式细胞仪检测3种慢病毒的转染率。CCK-8法检测转染前后细胞生长活力变化。 
结果与结论:①培养出的细胞CD44阳性率为75.64%,CD34、CD45阳性率分别为6.14%、9.48%;②pTomo-GFP慢病毒转染后GFP表达率为2.64%、Ad-GFP慢病毒转染后GFP表达率为16.72%、lenti-GFP慢病毒转染后GFP表达率为45.24%;③各慢病毒对细胞生长存在一定影响。pTomo-GFP、Ad-GFP在第1-8天对细胞生长潜伏期和对数生长期存在影响,可能对前期细胞活性造成一定干扰。短期内lenti-GFP对细胞生长影响不大,但第12天时出现了细胞生长情况变化,考虑对细胞远期活力存在影响;④选用lenti-GFP慢病毒转染兔骨髓间充质干细胞能够在保证细胞正常生长的情况下提供最大的转染效率,适用于兔骨髓间充质干细胞的示踪及基因转染等相关研究。

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:
0000-0003-3349-6359(肖渝)

关键词: 干细胞, 骨髓干细胞, 绿色荧光蛋白, 间充质干细胞, 骨髓间充质干细胞, 慢病毒, 转染, 转染率, 生长曲线, 国家自然科学基金

Abstract:

BACKGROUND: We explore the transfection effects of different lentiviruses on bone marrow mesenchymal stem cells (BMSCs) from the same source in order to screen out appropriate cell transfection tools.
OBJECTIVE: To explore the difference in the transfection efficiency of three different lentiviruses carrying green fluorescent protein (GFP) to transfect the rabbit BMSCs.
METHODS: Bone marrow samples were extracted from the ilium of 2-week-old Japan white rabbits, and then the BMSCs were separated, purified and extended using density gradient centrifugation. Cell surface markers were identified using flow cytometry. pTomo-GFP lentivirus, Ad-GFP lentivirus and lenti-GFP lentivirus were used to transfect the BMSCs, and the transfection efficiency was tested using flow cytometry. The cell viability was detected using cell counting kit-8 before and after transfection.
RESULTS AND CONCLUSION: As the positive rates of CD44, CD34 and CD45 were 75.64%, 6.14% and 9.48%, respectively, the cultured cells were identified as BMSCs by the flow cytometry. The expression levels of GFP after transfection by pTomo-GFP, Ad-GFP and lenti-GFP were 2.64%, 16.72% and 45.24%, respectively. The cell growth curve showed that pTomo-GFP lentivirus, Ad-GFP and lenti-GFP lentivirus showed certain effects on cell growth. pTomo-GFP and Ad-GFP had an effect on cell growth at incubation period and logarithmic growth phase at 1-8 days after transfection, which may cause some interference to the viability of early cells. lenti-GFP had little effect on cell growth in the short term, but there was a change in cell growth at day 12 after lenti-GFP transfection, and a long-term effect of lenti-GFP on cell viability was considered. Therefore, lenti-GFP lentivirus could highly transfect the BMSCs and could not impact the normal growth of BMSCs, indicating that lenti-GFP lentivirus is suitable for BMSCs tracing and gene transfection.

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: Lentivirus, Bone Marrow, Mesenchymal Stem Cells, Green Fluorescent Proteins, Tissue Engineering

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