Epitopes on the outer surface protein A of Borrelia burgdorferi recognized by antibodies and T cells of patients with Lyme disease
| Autor: | M C Shanafelt, J Anzola, C Soderberg, H Yssel, C W Turck, G Peltz |
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| Rok vydání: | 1992 |
| Předmět: | |
| Zdroj: | The Journal of Immunology. 148:218-224 |
| ISSN: | 1550-6606 0022-1767 |
| DOI: | 10.4049/jimmunol.148.1.218 |
| Popis: | We have characterized immunogenic epitopes of the 31-kDa outer surface protein A (OspA) protein of Borrelia burgdorferi, which is a major surface Ag of the spirochete causing Lyme disease. Full length and truncated forms of rOspA proteins were expressed in Escherichia coli, and their reactivities with antibodies and human T cell clones isolated from patients with Lyme disease were determined. The epitopes recognized by three of four OspA-reactive T cell clones are contained within the 60 COOH-terminal amino acids. Each of the four OspA-reactive T cell clones has a different HLA class II molecule involved in Ag recognition and recognizes a distinct epitope. One T cell clone promiscuously recognized an epitope in the context of different HLA-DQ molecules. In addition, the binding of a murine monoclonal anti-OspA antibody, as well as antibodies in sera of three of five patients with Lyme disease, was dependent upon the amino acids in the carboxy-terminal protion of this protein. Taken together, our results indicate that the 60 COOH-terminal amino acids of OspA contain epitopes recognized by human antibodies and T cells. |
| Databáze: | OpenAIRE |
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