首都医科大学学报 ›› 2012, Vol. 33 ›› Issue (2): 187-192.doi: 10.3969/j.issn.1006-7795.2012.02.011

• 基础研究 • 上一篇    下一篇

448野生型及突变型纤维蛋白原稳定转染细胞系的建立

林媛1,2, 李积凤1,2, 刘杰1,2, 牛梦林2, 孙然2, 王军1,2, 刘岩1,4, 王辰1,3   

  1. 1. 首都医科大学附属北京朝阳医院呼吸与危重症医学科,北京市呼吸和肺循环疾病重点实验室,北京呼吸疾病研究所,北京 100020;2. 首都医科大学基础医学院生理学教研室,北京 100069;3. 卫生部北京医院,北京 100730;4. 首都医科大学附属北京朝阳医院心外科,北京 100020
  • 收稿日期:2011-12-26 修回日期:1900-01-01 出版日期:2012-04-21 发布日期:2012-04-21
  • 通讯作者: 王 辰

Establishment of stably transfected cell line expressing BβArg448 or BβLys448 fibrinogen

LIN Yuan1,2, LI Ji-feng1,2, LIU Jie1,2, NIU Meng-lin2, SUN Ran2, WANG Jun1,2, LIU Yan1,4, WANG Chen1,3   

  1. 1. Department of Respiratory and Critical Care, Beijing Chaoyang Hospital, Capital Medical University, Beijing Key Laboratory of Respiratory and Pulmonary Circulation, Beijing Institute of Respiratory Medicine, Beijing 100020, China;2. Department of Physiology, School of Basic Medical Sciences, Capital Medical University, Beijing 100069, China;3. Beijing Hospital, Ministry of Health, Beijing 100730, China;4. Department of Cardiac Surgery, Being Chaoyang Hospital, Capital Medical University, Beijing 100020, China
  • Received:2011-12-26 Revised:1900-01-01 Online:2012-04-21 Published:2012-04-21

摘要: 目的 构建野生型(BβArg448)和突变型(BβLys448)纤维蛋白原稳定表达细胞系,为进一步研究BβArg448Lys基因多态性的病理生理学意义及相关蛋白功能研究提供实验基础。方法 以含纤维蛋白原野生型Bβ链cDNA全长的表达载体pMLP-FGB(448G)为模板,采用PCR定点突变技术构建BβLys448表达载体,即突变型质粒pMLP-FGB(448A)。应用脂质体转染及药物加压筛选的方法,将纤维蛋白原Aα链、野生型/突变型Bβ链、γ链表达载体共同转染至CHO-K1细胞,RT-PCR检测各条链mRNA的表达。结果 野生型及突变型纤维蛋白原稳定转染细胞系在转录水平构建成功。结论 野生型及突变型纤维蛋白原稳定转染细胞等在转录水平构建成功,为进一步体外研究BβArg448Lys所致纤维蛋白原的结构与功能异常奠定了基础。

关键词: 纤维蛋白原, 定点突变, 稳定转染细胞系

Abstract: Objective To investigate the effect of BβArg448Lys polymorphism on the function of fibrinogen, and to establish the stably transfected cell line expressing fibrinogen with BβArg448 and BβLys448 polymorphism. Methods Mutant fibrinogen Bβ chain cDNA(BβLys448) pMLP-FGB(448A) was generated from wild type Bβ chain cDNA(BβArg448) pMLP-FGB(448G), which contains the entire fibrinogen Bβ chain cDNA using site-directed mutagenesis method. The expression vectors encoding the entire fibrinogen Aα chain, wild type/ mutant type Bβ chain and γ chain cDNA were introduced into CHO-K1 cells respectively using Lipofectamine. The expression of all three chains in the transfected cell line was tested by RT-PCR. Results The stably transfected cell line expressing fibrinogen with BβArg448 and BβLys448 polymorphism was successfully established, which provide a useful cell model to the further functional study.Conclusion The stably transfected cell line expressing fibrinogen with BβArg448Lys and BβLys448 polymorphism was successfully established, which provide a useful cell model to the further functional study.

Key words: fibrinogen, site-directed mutagenesis, stable transfected cell line

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