SARS病毒表面蛋白抗原决定簇的免疫信息学分析

Immunoinformatic analysis for the epitopes on SARS virus surface protein

SARS病毒是一种新近发现的冠状病毒 ,其表面蛋白可与细胞上的相应受体结合 ,导致人类发生严重急性呼吸道综合征 (SARS)等疾病。通过免疫信息学的方法 ,我们对该病毒的表面蛋白进行了分析。结果显示 ,SARS病毒与常见的人类冠状病毒相比 ,其编码的表面蛋白中可以被人类免疫系统识别的抗原决定簇明显改变和减少。由此表明 ,SARS病毒引起人类发生严重疾病的原因可能与该病毒逃避机体免疫识别有关。因此 ,利用免疫信息学分析SARS病毒特有的或免疫应答比较强的决定簇 ,从中找到抗原肽疫苗的候选位点 。

SARS virus is a recently found coronavirus, which cause human atypical pneumonia through the binding of its spike protein to the receptor on human cells. By using the methods of immunoinformatics, we analyzed the virus surface protein and found that the epitopes, which can be recognized by human immune system, are strikingly changed or disappeared to compare with other common human coronavirus. This result may imply that the escape of SARS virus from human immune surveillance may be the causality plays a very of SARS virus infection. The immunoinformatics is a powerful fool for us to in screen the epitope specifical for SARS virus and identifying the candidate sites for peptide vaccine of SARS virus.