中国组织工程研究 ›› 2015, Vol. 19 ›› Issue (36): 5859-5864.doi: 10.3969/j.issn.2095-4344.2015.36.022

• 干细胞基础实验 basic experiments of stem cells • 上一篇    下一篇

过表达吲哚-2,3双加氧酶慢病毒载体的构建

贺继刚,李洪荣,桂龙升,李永武,严  丹   

  1. 云南省第一人民医院心脏大血管外科,云南省昆明市  650032
  • 出版日期:2015-09-03 发布日期:2015-09-03
  • 通讯作者: 严丹,医师,云南省第一人民医院心脏大血管外科,云南省昆明市 650032
  • 作者简介:贺继刚,男,1980年生,河北省抚宁县人,汉族,2013年苏州大学毕业,博士,主治医师,主要从事干细胞在终末心脏病中的应用研究。
  • 基金资助:

    国家自然科学基金(81460073);云南省科技厅-昆明医科大学应用基础研究联合专项(2014FB089)

Constructing a lentiviral vector overexpressing indoleamine 2,3-dioxygenase 

He Ji-gang, Li Hong-rong, Gui Long-sheng, Li Yong-wu, Yan Dan   

  1. Department of Cardiovascular Disease, First People’s Hospital of Yunnan Province, Kunming 650032, Yunnan Province, China
  • Online:2015-09-03 Published:2015-09-03
  • Contact: Yan Dan, Physician, Department of Cardiovascular Disease, First People’s Hospital of Yunnan Province, Kunming 650032, Yunnan Province, China
  • About author:He Ji-gang, M.D., Attending physician, Department of Cardiovascular Disease, First People’s Hospital of Yunnan Province, Kunming 650032, Yunnan Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81460073; Applied Basic Research Project of Yunnan Provincial Science and Technology Department & Kunming Medical University, No. 2014FB089

摘要:

背景:器官移植后的免疫排斥反应或免疫抑制药物严重不良反应使患者得不到有效治疗、治疗效果不佳。基于此背景下,结合最新免疫调节研究结果,试图寻找到一种有效的生物免疫抑制方法。

目的:构建过表达吲哚胺2,3-双加氧酶(indoleamine 2,3-dioxygenase,IDO)慢病毒载体。

方法:①将已构建成功的IDO基因插入慢病毒包装质粒GV308中,构建GV308- IDO重组慢病毒包装质粒。②用慢病毒包装辅助元件Psi、 cPPT、3FLAG、TetR、IRES、WRPE、TetIIP、Ubiquitin Promoter、SV40 origin及HIV的基本元件 5LTR 和 3LTR,共培养法转染80%融合的293T细胞。处有一目的片段,该值与IDO蛋白大小一致。RT-PCR检测可见293T细胞中有IDO基因表达。说明IDO融合基因已经成功重组于慢病毒包装质粒内。

结果与结论:Western blot检测经10 g/L 琼脂糖凝胶电泳可见在 M处有一目的片段,该值与IDO蛋白大小一致。RT-PCR检测可见293T细胞中有IDO基因表达。说明IDO融合基因已经成功重组于慢病毒包装质粒内。r 48 000

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

关键词: 干细胞, 培养, 融合基因, 重组慢病毒, IDO, 国家自然科学基金

Abstract:

BACKGROUND: Immune rejections after organ transplantation or serious adverse reactions due to immunosuppressive drugs show a lack of effective treatments and poor therapeutic outcomes. Therefore, we try to find an effective immune suprresion method in combination of the latest immunomodulatory achievements.

OBJECTIVE: To construct a lentiviral vector overexpressing indoleamine 2,3-dioxygenase (IDO).

METHODS: (1) The IDO gene that was successfully contructed was inserted into lentiviral packaging plasmids GV308 to construct GV308-IDO lentivirus packaging plasmids. (2) The 293T cells with 80% confluence were co-cultured with 5'LTR and 3'LTR, basic elements of lentiviral packaging auxiliary components, including Psi, cPPT, 3FLAG, TetR, IRES, WRPE, TetIIP, Ubiquitin Promoter, SV40 origin and HIV.

RESULTS AND CONCLUSION: Western blot assay showed that in 10 g/L agarose gel electrophoresis, there was a target fragment at Mr 48 000. This value was consistent with the size of IDO protein. RT-PCR results showed visible IDO expression in 293T cells. These findings suggest that IDO fusion gene has been successfully reorganized in the lentiviral packaging plasmids.

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: Gene Fusion, Indoleamine-Pyrrole 2,3,-Dioxygenase, Lentivirus Infections

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