Abstract
目的 探讨严重急性呼吸道综合征(SARS)患者的SARS冠状病毒(SARS-CoV)抗体产生情况以及SARS-CoV Spike蛋白抗原的特异性.方法运用酶联免疫法(ELISA)和蛋白质印迹法(Western Blotting)检测95例SARS患者体内抗体的产生情况和验证病毒Spike蛋白抗原的特异性.结果 95例SARS患者血清抗体结果中,大部分患者出现抗体阳性,抗SARS-CoV IgM总阳性率为91.6% (87/95),抗SARS-CoV IgG总阳性率为97.9%(93/95);高暴露人群组和正常对照组的抗SARS-CoV IgM和抗SARS-CoV IgG阳性率为0%.经过携带Spike-protein 基因的重组病毒Ad-Sn感染COS-1细胞后表达的S蛋白抗原,使用SARS患者抗血清能够检测出特异性蛋白条带;重组病毒感染CNE-2细胞后,表达的S蛋白抗原,能够通过不同患者抗血清同时检测到相应的特异性抗原蛋白.结论 SARS患者感染SARS-CoV后,体内可产生相应抗体;利用SARS患者所产生特异性抗血清,可以检测出克隆SARS-CoV的Spike基因所表达的Spike蛋白。
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