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SARS冠状病毒检测60mer寡核苷酸基因芯片的设计及应用

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摘要 目的 设计并应用60 mer寡核苷酸基因芯片实现对SARS冠状病毒的检测。方法 根据寡核苷酸基因芯片的设计原则设计出3O条60mer的寡核苷酸片段,覆盖SARS冠状病毒(以TOR2株为参考序列,GENEBANK索取号:AY274119)全基因组,点样制备成12×12的寡核苷酸基因芯片,将临床诊断SARS患者痰液标本抽提病毒RNA,采用限制性显示技术进行标记,将标记好的样品与芯片杂交,洗脱,扫描。初步探索寡核苷酸芯片诊断SARS冠状病毒的敏感性及特异性,并对芯片做进一步的优化。结果 来自SARS患者样品与芯片上的多个SARS探针杂交,出现了明显的荧光信号;阴性和空白对照探针上没有杂交信号,而对照样品仅与一个SARS探针有杂交。结论 采用60 mer寡核苷酸基因芯片可以从基因水平实现对SARS冠状病毒多段序列的平行检测,对于提高检出率有一定意义,此外,尚可用于监测在发病过程的各个阶段中病毒基因的活动状况。
出处 《广东医学》 CAS CSCD 2003年第z1期14-17,共4页 Guangdong Medical Journal
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