PASSIVELY TRANSFERABLE PROTECTION AGAINST SCHISTOSOMA-JAPONICUM INDUCED IN THE MOUSE BY MULTIPLE VACCINATION WITH ATTENUATED LARVAE - THE DEVELOPMENT OF IMMUNITY, ANTIBODY ISOTYPE RESPONSES AND ANTIGEN RECOGNITION

被引:18
作者
DUNNE, DW [1 ]
JONES, FM [1 ]
COOK, L [1 ]
MOLONEY, NA [1 ]
机构
[1] LONDON SCH HYG & TROP MED,LONDON WC1E 7HT,ENGLAND
关键词
SCHISTOSOMA-JAPONICUM; MOUSE; VACCINATION; IMMUNITY; ANTIBODY ISOTYPES; ELISA;
D O I
10.1111/j.1365-3024.1994.tb00322.x
中图分类号
R392 [医学免疫学]; Q939.91 [免疫学];
学科分类号
100102 ;
摘要
Vaccination of mice with attenuated S. japonicum cercariae induces protection against secondary infection which can be transferred to naive mice with serum (VMS). The presence of antibody does not per se impart protection as serum from mice carrying non-attenuated infections (CIS), contains high levels of specific antibody, but confers no protection. Here we describe the increased protection transferred (20 to 68%) with increased number of vaccinations (one to five) given to the donors, and its decline with time after the final vaccination. We also describe the development of IgM, IgA, IgE, total IgG and IgG subclass responses in VMS, giving different levels of protection and CIS, directed against sodium periodate-sensitive and -resistant epitopes in 'skin-stage', 'lung-stage' and 'liver-stage' schistosomula, adult worms and eggs. In addition, antibody affinity maturation, development of S. japonicum species-specific responses, and vaccination-specific responses were examined. No response developed in parallel with serum-mediated immunity, suggesting immunity may be due to responses against individual antigens. Preliminary examination of antigens recognized in Western blot showed that two schistosomal membrane antigens, of 13 and 40 kDa, were recognized by VMS from mice vaccinated five times (68% protection), but not by twice vaccinated VMS (27% protection). Neither antigen was recognized by non-protective CIS.
引用
收藏
页码:655 / 668
页数:14
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