The use of the 17 kDa outer surface lipoprotein (OspA) of
Piscirickettsia salmonis,
or its homologues, as the basis of, or part thereof, a recombinant vaccine for salmonid rickettsial septicaemia and other rickettsial diseases is disclosed. Surface antigens of the bacterial pathogen
P. salmonis
are characterized and an immunoreactive antigen, namely the 17 kDa outer surface lipoprotein OspA of
P. salmonis,
as well as the nucleic acid segment that encodes the OspA immunoreactive antigen, is identified and characterized. Diagnostic techniques including the use of hybridization probes and primers as well as the production of specific antigens and antibodies that may be used in immunization techniques for inducing immunity against
P. salmonis
and other rickettsial diseases are disclosed, as are the development of recombinant vaccines for SRS and other rickettsial diseases based on the 17 kDa lipoprotein OspA. Augmentation of protective immunity by the inclusion of promiscuous T lymphocyte epitopes (TCE's) in fusion protein constructs in salmonids and to the use of bacterial protein inclusion bodies as a source of the protective immunogen is also disclosed.
                            利用鲑鱼鱼盘立克次体的 17 kDa 外表面脂蛋白 (OspA)
或其同源物,作为鲑鱼立克次体败血症
重组疫苗的基础或其一部分、
或其同源物,作为鲑鱼立克次体败血症和其他立克次体疾病
重组疫苗的基础或其一部分。细菌病原体的表面抗原
鲑鱼
的 17 kDa 外表面脂蛋白 OspA 具有免疫活性。
沙门氏菌的
以及编码 OspA 免疫活性抗原的核酸片段。诊断技术包括杂交探针和引物的使用,以及特异性抗原和
抗体的生产,这些抗原和
抗体可用于免疫技术,以诱导对鲑鱼弧菌的免疫。
沙门氏菌
还公开了基于 17 kDa 脂蛋白 OspA 的 SRS 和其他立克次体疾病
重组疫苗的开发。此外,还披露了通过在鲑鱼融合蛋白构建体中加入杂乱的 T 淋巴细胞表位(TCE)来增强保护性免疫,以及使用细菌蛋白包涵体作为保护性免疫原的来源。