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Journal of Clinical Microbiology, 01 1995, 103-109, Vol 33, No. 1
Copyright © 1995 by the American Society for Microbiology. All rights reserved.

Phenotypic analysis of outer surface protein C (OspC) of Borrelia burgdorferi sensu lato by monoclonal antibodies: relationship to genospecies and OspA serotype

B Wilske, S Jauris-Heipke, R Lobentanzer, I Pradel, V Preac-Mursic, D Rossler, E Soutschek and RC Johnson
Max von Pettenkofer Institut fur Hygiene und Medizinische Mikrobiologie, Universitat Munchen, Germany.

Molecular analyses of the genes encoding OspC, a major immunodominant protein of Borrelia burgdorferi sensu lato, revealed a considerable degree of heterogeneity. In the present study, we investigated whether a similar heterogeneity of the OspC phenotype can be shown by analysis with monoclonal antibodies (MAbs). Thirteen OspC-specific MAbs (L22 MAbs) were produced by immunizing mice with either different combinations of whole-cell antigens or recombinantly expressed OspCs cloned from strains belonging to different Borrelia spp. Ten of them differed in their reactivities with various strains. Western blot (immunoblot) analyses of 38 B. burgdorferi sensu lato strains resulted in 13 different reactivity patterns. These 13 different patterns were observed among only six different OspA serotypes, indicating that OspC is more heterogeneous than OspA. Patterns 1 to 4 were present only in B. burgdorferi sensu stricto, patterns 5 to 7 were present only in Borrelia afzelii, and patterns 9 to 13 were present only in Borrelia garinii. Pattern 8 was observed among B. afzelii and B. garinii strains but not among B. burgdorferi sensu stricto strains. One L22 MAb (2B8) recognized a common OspC-specific epitope of all 38 B. burgdorferi sensu lato strains analyzed, and another one (22C11) recognized a common epitope of OspC from both B. afzelii and B. garinii and was not reactive with OspC from B. burgdorferi sensu stricto. Western blot and sequence analysis of truncated OspCs located the 22C11 epitope as well as a species-specific sequence motif between amino acids 20 and 35.(ABSTRACT TRUNCATED AT 250 WORDS)


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Antimicrob. Agents Chemother. Clin. Microbiol. Rev.
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Copyright © 1995 by the American Society for Microbiology. All rights reserved.