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中国临床药理学与治疗学 ›› 2012, Vol. 17 ›› Issue (4): 367-370.

• 基础研究 • 上一篇    下一篇

白细胞介素7剪接变异体的克隆和序列分析

冯凤兰1, 彭羽瑜1, 潘德顺1, 李晓波2, 金小宝2, 朱家勇2   

  1. 1广东药学院药理系;
    2广东省生物活性药物研究重点实验室,广州 510006,广东
  • 收稿日期:2011-11-29 修回日期:2012-02-27 发布日期:2012-04-28
  • 通讯作者: 潘德顺,男, 博士, 副教授, 研究方向:肿瘤免疫学。Tel: 13611430747 E-mail: Deshunpan@163.com
  • 作者简介:冯凤兰,女,硕士生,研究方向: 生化药理学。Tel: 13760666090 E-mail: justforlan@163.com
  • 基金资助:
    中国-意大利科技合作项目( 200625 )

Clone and analysis of splice variants of interleukin 7 in cancer cell lines

FENG Feng-lan1, PENG Yu-yu1, PAN De-shun1, LI Xiao-bo2, JIN Xiao-bao2, ZHU Jia-yong2   

  1. 1Guangdong College of Pharmacy;
    2Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangzhou 510006, Guangdong, China
  • Received:2011-11-29 Revised:2012-02-27 Published:2012-04-28

摘要: 目的: 克隆白细胞介素- 7(IL-7) 剪接变异体,筛选出在IL-7开放阅读框内剪接变异体,为其生物活性的研究打基础。方法: 运用自行设计的IL-7引物, 采用逆转录聚合酶链反应(RT- PCR)技术, 分离正常培养的肝癌细胞株 HepG2、结肠癌细胞株HT29 IL-7 mRNA, 再对电泳所获条带进行克隆、测序和分析。结果: 肝癌细胞株 HepG2、结肠癌细胞株 HT29都能检测到IL-7 mRNA, 而且从培养癌细胞株分离出多条新带, 经亚克隆及测序, 证实这些条带是来源人IL-7 基因、但缺乏不同外显子的IL-7剪接变异体cDNA;通过和IL-7 cDNA比对分析,发现其中5个剪接变异体在IL-7开放阅读框内。结论: IL-7剪接变异体广泛存在于各种肿瘤细胞中。对其进一步的研究,将为癌症病人的免疫调节紊乱和临床免疫治疗提供新的研究方向。

关键词: 白细胞介素7, 克隆, 序列分析, 肿瘤细胞, 剪接体

Abstract: AIM: To clone and select the splice variants in open reading frame of interleukin 7 from cancer cell lines. METHODS: Reverse transcription- polymerase chain reaction (RT- PCR) was used for investigating the expression of IL-7. According to IL-7 gene cDNA, the primers were designed and synthesized, then the splice variants of IL-7 in human cancer cell lines was identified, cloned into vector and sequenced. RESULTS: IL-7 mRNA can be detected in Hepatic cancer cells and Colon cancer cells. A number of new bands of IL-7 were obtained from cultured cancer cell lines, which lack of different exons. By analyzing the splice variants, we found 5 of them in open reading frame of IL-7. CONCLUSION: Splice variants of IL-7 are expressed in many tumor cell lines. Further investigation of the Splice variants can provide a new research direction for cancer patient immune disorders and clinical immunotherapy.

Key words: Interleukin 7, Cloning, Sequence analysis, Tumor cells, Splice variants

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