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Outer membrane protein FrpA, the siderophore piscibactin receptor of Photobacterium damselae subsp. piscicida, as a subunit vaccine against photobacteriosis in sole (Solea senegalensis).
Valderrama, Katherine; Balado, Miguel; Rey-Varela, Diego; Rodríguez, Jaime; Vila-Sanjurjo, Antón; Jiménez, Carlos; Lemos, Manuel L.
Afiliación
  • Valderrama K; Centro de Investigacións Científicas Avanzadas (CICA), Departamento de Química, Facultade de Ciencias, Universidade da Coruña, Coruña, 15071 A, Spain; Grupo GIBE, Departamento de Bioloxía, Centro de Investigacións Científicas Avanzadas (CICA), Universidade da Coruña, Coruña, 15071 A, Spain.
  • Balado M; Departamento de Microbioloxía e Parasitoloxía, Instituto de Acuicultura, Universidade de Santiago de Compostela, Santiago de Compostela, 15782, Spain.
  • Rey-Varela D; Departamento de Microbioloxía e Parasitoloxía, Instituto de Acuicultura, Universidade de Santiago de Compostela, Santiago de Compostela, 15782, Spain.
  • Rodríguez J; Centro de Investigacións Científicas Avanzadas (CICA), Departamento de Química, Facultade de Ciencias, Universidade da Coruña, Coruña, 15071 A, Spain.
  • Vila-Sanjurjo A; Grupo GIBE, Departamento de Bioloxía, Centro de Investigacións Científicas Avanzadas (CICA), Universidade da Coruña, Coruña, 15071 A, Spain. Electronic address: antonvila.s@gmail.com.
  • Jiménez C; Centro de Investigacións Científicas Avanzadas (CICA), Departamento de Química, Facultade de Ciencias, Universidade da Coruña, Coruña, 15071 A, Spain. Electronic address: carlos.jimenez@udc.es.
  • Lemos ML; Departamento de Microbioloxía e Parasitoloxía, Instituto de Acuicultura, Universidade de Santiago de Compostela, Santiago de Compostela, 15782, Spain. Electronic address: manuel.lemos@usc.es.
Fish Shellfish Immunol ; 94: 723-729, 2019 Nov.
Article en En | MEDLINE | ID: mdl-31580933
Photobacteriosis caused by Photobacterium damselae subsp. piscicida (Pdp) remains one of the main infectious diseases affecting cultured fish in Mediterranean countries. Diverse vaccine formulations based in the use of inactivated bacterial cells have been used with unsatisfactory results, especially in newly cultured species like sole (Solea senegalensis). In this work, we describe the use of the outer membrane receptor (FrpA) of the siderophore piscibactin produced by Pdp as a novel subunit vaccine against photobacteriosis. FrpA has been cloned and expressed in Escherichia coli under an arabinose-inducible promoter. A recombinant protein (rFrpA) containing the pelB localization signal and a His tag was constructed to obtain a pure native form of the protein from E. coli outer membranes. The immunogenicity of rFrpA, and its protective effect against photobacteriosis, was tested by i.p. injection of 30  µg of the protein, mixed with Freund's adjuvant, in sole fingerlings with two immunizations separated by 30 days. Results showed that using either pure rFrpA or whole cells as immobilized antigens in ELISA assays, rFrpA induces the production of specific antibodies in sole. An experimental infection using fish vaccinated with rFrpA or formalin-killed whole cells of Pdp showed that both groups were protected against Pdp infection at similar levels, with no significant differences, reaching RPS values of 73% and 79%, respectively. Thus, FrpA constitutes a promising antigen candidate for the development of novel more effective vaccines against fish photobacteriosis.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Photobacterium / Proteínas de la Membrana Bacteriana Externa / Vacunas Bacterianas / Infecciones por Bacterias Gramnegativas / Enfermedades de los Peces Límite: Animals Idioma: En Revista: Fish Shellfish Immunol Asunto de la revista: BIOLOGIA / MEDICINA VETERINARIA Año: 2019 Tipo del documento: Article País de afiliación: España Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Photobacterium / Proteínas de la Membrana Bacteriana Externa / Vacunas Bacterianas / Infecciones por Bacterias Gramnegativas / Enfermedades de los Peces Límite: Animals Idioma: En Revista: Fish Shellfish Immunol Asunto de la revista: BIOLOGIA / MEDICINA VETERINARIA Año: 2019 Tipo del documento: Article País de afiliación: España Pais de publicación: Reino Unido