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中国真菌学杂志 2012, Vol. 7  Issue (1): 17-19,23.

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新生隐球菌MIS1基因的siRNA表达载体的构建及鉴定

李秀丽1, 田媛2, 史玉玲1, 顾俊瑛1, 李晓建1, 刘至昱1, 马越娥1, 高飞1, 王茠茠1   

  1. 1. 上海第十人民医院皮肤科, 上海200072;
    2. 第二军医大学药学院生化药学教研室, 上海200433
  • 收稿日期:2011-12-07 出版日期:2012-02-28 发布日期:2012-02-28
  • 作者简介:李秀丽,女(汉族),博士,主治医师.E-mail:xiuxiu_li@126.com

Construction and identification of siRNA expression vector targeting MIS1 gene in Cryptococcus neoformans

LI Xiu-li1, TIAN Yuan2, SHI Yu-lin1, GU Jun-ying1, LI Xiao-jian1, LIU Zhi-yu1, MA Yue-e1, GAO fei1, WANG Xiu-xiu1   

  1. 1. Department of Dermatology, Tenth People’s Hospital of Tongji University, Shanghai 200072;
    2. Department of Pharmacy, Second Military Medical University, Shanghai 200433
  • Received:2011-12-07 Online:2012-02-28 Published:2012-02-28

摘要: 目的 构建靶向新生隐球菌MIS1基因的siRNA重组表达载体质粒,并进行鉴定。方法 根据GenBank的MIS1基因序列,按照载体要求设计单链引物,克隆到空载体psilencer4.1-CMV neo中,经过LiAc化学法将重组质粒转染到新生隐球菌细胞中并用G418筛选,利用real time PCR鉴定阳性细胞的MIS1基因水平。结果 重组表达质粒Psilencer4.1-CMV-si-MIS1经PCR、双酶切及测序鉴定,结果证明重组表达载体构建成功,其能在mRNA水平显著抑制MIS1的表达。结论 已成功构建新生隐球菌MIS1基因的siRNA表达载体,为深入研究MIs1在隐球菌相关疾病的发生及发展中的作用提供了技术手段。

关键词: 新生隐球菌, RNA干扰, MIS1

Abstract: Objective To construct siRNA expression vector targeting MIS1 gene in Cryptococcus neoformans.Methods Genome sequences of MIS1 gene were retrieved from Genebank and siRNA sequences were designed by Ambion online software.The cDNA was synthesized and inserted into Psilencer4.1-CMV neo,then identified through sequencing and real time PCR.Results The recombinant plasmid of siRNA targeting MIS1 in Cryptococcus neoformans completely coincided with the design,and the mRNA level of MIS1 was inhibited significantly.Conclusion The siRNA expression vector was constructed successfully,and laid a foundation for exploring the function of MIS1 in Cryptococcus neoformans.

Key words: Cryptococcus neoformans, siRNA, MIS1

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