摘要
目的筛选SARS病原体的模拟抗原表位。方法以混合SARS患者恢复期血清Ig作为筛选分子,从噬菌体肽库中筛选出能与患者血清Ig结合的模拟抗原表位,并研究其抗原特性。结果得到2个能与SARS患者恢复期血清Ig特异性结合的阳性克隆;DNA测序结果显示这2个模拟抗原表位与SARS抗原无同源性。结论用噬菌体肽库成功筛选得到SARS的模拟表位,为开展用SARS模拟抗原表位探索SARS的防治研究创造了条件。
Objective To screen the severe acute respiratory syndromes （SARS） mimotopes with random phage peptide library and to investigate their immunogenicity. Methods Using SARS sera as selective molecule, a 12 mer phage peptide library was biopanned and positive clones containing the mimic epitopes were selected. The inmmno-characteriation of the epitopes were then investigated. Results 2 positive clones that having specific affinity to SARS sera were obtained. The DNA sequencing data showed no homology between the sequences of the deduced amino acid of the two mimic antigen peptides and the sequence of SARS. Conclusion SARS mimotopes were obtained by phage peptide library screening. This method might provide a new approach for SARS therapy and vaccine development.
出处
《中华流行病学杂志》
CAS
CSCD
北大核心
2005年第11期904-906,共3页
Chinese Journal of Epidemiology
基金
内蒙古自治区卫生厅自然科学基金资助项目(20035028)
关键词
严重急性呼吸综合征
噬菌体肽库
模拟抗原表位
Severe acute respiratory syndromes
Phage peptide library
Mimic antigen epitope
