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J Infect Dis. 1997 Feb;175(2):400-5.

Immunization with outer surface protein (Osp) A, but not OspC, provides cross-protection of mice challenged with North American isolates of Borrelia burgdorferi.

Author information

1
Department of Pathology, Microbiology, and Immunology, School of Veterinary Medicine, University of California, Davis 95616, USA.

Abstract

The identification of antigens with the capacity to induce a broad spectrum of protective immunity is an important consideration in the design of a Lyme disease vaccine. In this study, the range of protection provided by outer surface protein (Osp) A or OspC vaccination was compared. Mice actively immunized with OspA or OspC were challenged with 3 North American isolates of Borrelia burgdorferi. OspA-immunized mice were fully protected from infection with each of the isolates, whereas mice immunized with OspC were protected from infection with the homologous isolate but not with 2 heterologous isolates. Sequence analysis revealed that the ospA genes from these 3 isolates were >99% homologous, whereas the ospC genes shared only 81%-85% homology. Western blot analysis suggested antigenic heterogeneity associated with OspC but not OspA. These results indicate that genetic and antigenic heterogeneity may limit the usefulness of OspC as a vaccine constituent.

PMID:
9203661
DOI:
10.1093/infdis/175.2.400
[Indexed for MEDLINE]

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