Construction, expression, and immunogenicity of the Schistosoma mansoni P28 glutathione S-transferase as a genetic fusion to tetanus toxin fragment C in a live Aro attenuated vaccine strain of Salmonella
| Autor: | Raymond J. Pierce, T Ali, A Capron, G Riveau, C M Khan, N Fairweather, Hesta McNeill, B Villarreal-Ramos, R Demarco de Hormaeche, S Chatfield |
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| Rok vydání: | 1994 |
| Předmět: |
Recombinant Fusion Proteins
Genetic Vectors Molecular Sequence Data Antibodies Helminth Helminth genetics Vaccines Attenuated Mice Tetanus Toxin Salmonella Animals DNA Primers Glutathione Transferase Mice Inbred BALB C Multidisciplinary Attenuated vaccine biology Base Sequence Aroa Immunogenicity Helminth Proteins Schistosoma mansoni biology.organism_classification Fusion protein Virology Bacterial vaccine Glutathione S-transferase Antigens Helminth Bacterial Vaccines biology.protein Female Research Article |
| Zdroj: | Proceedings of the National Academy of Sciences of the United States of America. 91(23) |
| ISSN: | 0027-8424 |
| Popis: | A vector has been constructed to allow genetic fusions of guest antigens via a hinge domain to the C terminus of the highly immunogenic C fragment of tetanus toxin. A fusion has been constructed with the gene encoding the protective 28-kDa glutathione S-transferase (EC 2.5.1.18) from Schistosoma mansoni. The recombinant vector has been electroporated into the nonvirulent Salmonella typhimurium aroA live vaccine strain SL3261. The corresponding chimeric protein is stably expressed in a soluble form in Salmonella as evaluated by Western blotting with fragment C and glutathione S-transferase antisera. Mice immunized intravenously with a single dose of the live recombinant bacteria elicit antibodies to both fragment C and glutathione S-transferase as detected by enzyme-linked immunosorbent assays. Furthermore, all of the mice were solidly protected when challenged with lethal doses of either tetanus toxin or the virulent Salmonella typhimurium strain C5. Mice have also elicited antibodies to fragment C and glutathione S-transferase after oral immunization. It may be that a live trivalent vaccine against typhoid, tetanus, and schistosomiasis is feasible. |
| Databáze: | OpenAIRE |
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