检验医学 ›› 2018, Vol. 33 ›› Issue (8): 742-748.DOI: 10.3969/j.issn.1673-8640.2018.08.016

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基因芯片技术检测临床常见致病性念珠菌和新型隐球菌及ERG11基因点突变的实验分析

王敬华1, 虞培娟2, 葛平1, 章强强3, 肖艳群1, 王庆忠1, 徐蓉1, 陈蓉1, 刘学杰1, 蒋玲丽1, 王雪亮1, 王华梁1   

  1. 1.上海市临床检验中心,上海 200126
    2.苏州大学附属第二医院检验科, 江苏 苏州 215004
    3. 复旦大学附属华山医院皮肤科,上海 200040
  • 收稿日期:2017-06-07 出版日期:2018-08-10 发布日期:2018-09-07
  • 作者简介:null

    作者简介:王敬华,男,1971年生,硕士,主任技师,主要从事临床微生物学检验质量控制与管理、微生物检验自动化及细菌耐药机制研究。

  • 基金资助:
    上海市自然科学基金项目(15ZR1436100);上海市卫生和计划生育委员会重点资助项目(20134010);上海市公共卫生三年行动计划资助项目(15GWZK0301)

Determinations of Candida,Cryptococcus neoformans and ERG11 gene point mutations by gene chip

WANG Jinghua1, YU Peijuan2, GE Ping1, ZHANG Qiangqiang3, XIAO Yanqun1, WANG Qingzhong1, XU Rong1, CHEN Rong1, LIU Xuejie1, JIANG Lingli1, WANG Xueliang1, WANG Hualiang1   

  1. 1. Shanghai Center for Clinical Laboratory,Shanghai 200126,China
    2. Department of Clinical Laboratory,the Second Affiliated Hospital of Soochow University,Suzhou 215004,China
    3. Department of Dermatology,Huashan Hospital,Fudan University,Shanghai 200040,China
  • Received:2017-06-07 Online:2018-08-10 Published:2018-09-07

摘要:

目的 建立基因芯片技术检测临床常见致病性念珠菌和新型隐球菌及氟康唑耐药白念珠菌相关ERG11基因点突变的试验方法。方法 针对临床常见的5种致病性念珠菌和新型隐球菌5.8S rDNA与28S rDNA间的内转录间区2(ITS-2)基因设计、合成一系列寡核苷酸探针,制备寡核苷酸芯片,以鉴定5种致病性念珠菌和新型隐球菌;设计、合成能够特异性扩增ERG11基因点突变的引物,并采用不对称荧光聚合酶链反应(PCR)扩增ERG11基因,将PCR产物与芯片进行杂交。结果 采用特异性引物和不对称荧光PCR从12株临床分离耐药株中成功扩增出ERG11基因4个突变点;采用基因芯片杂交技术成功鉴定5种临床常见致病性念珠菌和新型隐球菌。结论 制备的寡核苷酸基因芯片,可以用于鉴定临床常见的致病性念珠菌和新型隐球菌。

关键词: 基因芯片, 不对称荧光聚合酶链反应, 致病性念珠菌, 新型隐球菌

Abstract:

Objective To investigate the determinations of Candida,Cryptococcus neoformans and ERG11 gene point mutations by gene chip.Methods The primers and oligonucleotide probes of 5.8 S rDNA and 28S rDNA of internal transcribed spacer-2(ITS-2) gene of 5 species of pathogenic Candida and Cryptococcus neoformans were synthesized,and the oligonucleotide microarray was prepared for identification. The specific primers and oligonucleotide probes of point mutations in ERG11 gene were synthesized,and ERG11 gene was amplified by asymmetric fluorescence polymerase chain reaction(PCR). The products were analyzed by oligonucleotide microarray.Results A total of 4 point mutations of ERG11 gene were amplified from 12 isolates of drug resistant Candida by asymmetric fluorescence PCR with specific primers,and 5 species of pathogenic Candida and Cryptococcus neoformans were identified by gene chip successfully.Conclusions The oligonucleotide microarray established in this study can be used to identify the clinical isolated pathogenic Candida and Cryptococcus neoformans.

Key words: Gene chip, Asymmetric fluorescence polymerase chain reaction, Pathogenic Candida, Cryptococcus neoformans

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