摘要
目的 观测 5株 2类不同表型的双价痢疾菌苗滴鼻免疫后所引起的黏膜和系统的记忆反应 ,为痢疾菌苗的构建提供理论依据。方法 以小鼠滴鼻免疫为模型 ,3次免疫 (间隔 2周 )后 ,2 0周再次免疫 ,分别于 3次免疫及 2 0周加强免疫后第 7天 ,收取鼻咽、肺、小肠及阴道冲洗液和血清 ,应用ELISA方法检测福氏、宋内氏特异性抗体。结果 2类双价菌苗株滴鼻免疫 3次后 ,多个黏膜部位及血清均产生了抗原特异性sIgA、IgG ,较PBS对照组有明显升高 ;2 0周后再次加强免疫 ,仍可诱导黏膜及系统的免疫反应 ,但较 3次免疫后水平明显降低。结论 2株双价痢疾菌苗滴鼻免疫小鼠后可诱导多个黏膜及系统的特异性抗体产生 ,并可产生一定时间的记忆反应 。
Objective FSM 2117,FS 5416,FS 5414,FS 5411 and FS 5402 are two types of bivalent hybrid strains of S. flexneri and S. sonnei, constructed by our laboratory, The FS 5416,FS 5414,FS 5411 and FS 5402 express four invasive plasmid antigens and can be invasive to Hela cells(inv+), but the FSM 2117 does not(inv-). To observe the differences of the two types of bivalent shigella vaccines in immune responses and memory responses, we detected the antibodies of shi gella flexneri and sonnei LPS after three times immunization and boosting immunization after 20 weeks.Methods Using the ELISA assay, the changes of specific antibodies of mice (the levels of SIgA and IgG) were detected after immunization with five different vaccines and boosting immunization after an interval of 20 weeks. Results We observed significant rises in different mucosal sites wash and serum on the two times immunization.Significant differences were observed between two immunized groups and the control. Both of the two types of bivalent shigella vaccines showed memory response, but the levels of antibodies were lower than that of the third immunization. Conclusion Two types of shigella vaccines can induce antigen specific antibodies not only in several mucosal sites but also in serum after three times immunization. They can arose the memory immune responses not only in local nasal site but also in the other mucosal sites and serum. The expression of invasive plasmid antigens can improve the level of antibodies immune responses and the memory responses.
出处
《免疫学杂志》
CAS
CSCD
北大核心
2002年第6期421-425,共5页
Immunological Journal
基金
国家"8 63"基金资助项目 (863 1 0 2 0 7 0 3 0 3)
关键词
双价痢疾菌苗
特异性抗体
滴鼻免疫
记忆反应
小鼠
bivalent Shigella vaccine
specific antibodies
intransal immunization
memory response
