Characterization of GASA-1, a new vaccine candidate antigen of Babesia bovis
- Autores
- Flores, Daniela; Rodriguez, Anabel Elisa; Tomazic, Mariela Luján; Torioni, Susana Marta; Echaide, Ignacio Eduardo; Zamorano, Patricia Ines; Langellotti, Cecilia Ana; Araujo, Flabio Ribeiro de; Rolls, Peter; Schnittger, Leonhard; Florin-Christensen, Mónica
- Año de publicación
- 2020
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Surface proteins bound to the cell membrane by glycosylphosphatidylinositol (GPI) anchors are considered essential for the survival of pathogenic protozoans. In the case of the tick-transmitted hemoparasite Babesia bovis, the most virulent causative agent of bovine babesiosis, the GPI-anchored proteome was recently unraveled by an in silico approach. In this work, one of the identified proteins, GASA-1 (GPI-Anchored Surface Antigen-1), was thoroughly characterized. GASA-1 is 179 aa long and has the characteristic features of a GPI-anchored protein, including a signal peptide, a hydrophilic core and a hydrophobic tail that harbors a GPI anchor signal. Transcriptomic analysis shows that it is expressed in pathogenic and attenuated B. bovis strains. Notably, the gasa-1 gene has syntenic counterparts in B. bigemina and B. ovata, which also encode GPI-anchored proteins. This is highly unusual since all piroplasmid GPI-anchored proteins described so far have been found to be species-specific. Sequencing of gasa-1 alleles from B. bovis geographical isolates originating from Argentina, USA, Brazil, Mexico and Australia showed over 98 % identity in both nucleotide and amino acid sequences. A recombinant form of GASA-1 (rGASA-1) was generated in E. coli and anti-rGASA-1 antibodies were raised in mice. Fixed and live immunofluorescence assays showed that GASA-1 is expressed in in vitro cultured B. bovis merozoites and surface-exposed. Moreover, incubation of B. bovis in vitro cultures with anti-GASA-1 antibodies partially, but significantly, reduced erythrocyte invasion, indicating that this protein bears neutralization-sensitive antibody epitopes. Splenocytes of rGASA-1-inoculated mice showed a specific proliferative response when exposed to the recombinant protein, indicating that GASA-1 bears T-cell epitopes. Finally, sera from a group of B. bovis-infected cattle reacted with the recombinant protein, demonstrating that GASA-1 is expressed during natural infection of bovines with B. bovis, and suggesting that it is immunodominant. The high degree of conservation among B. bovis isolates and the presence of syntenic genes in other Babesia species suggest a relevant role of GASA-1 and GASA-1-like proteins for parasite survival, especially considering that, due to their surface location, they are exposed to the selection pressure of the host immune system. The highlighted features of GASA-1 make it an interesting candidate for the development of vaccines against bovine babesiosis.
Instituto de Patobiología
Fil: Flores, Daniela. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patobiología; Argentina
Fil: Rodriguez, Anabel Elisa. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patobiología; Argentina
Fil: Tomazic, Mariela Luján. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patobiología; Argentina
Fil: Torioni, Susana Marta. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela; Argentina
Fil: Echaide, Ignacio Eduardo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela; Argentina
Fil: Zamorano, Patricia Ines. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patobiología; Argentina. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Virología; Argentina
Fil: Langellotti, Cecilia Ana. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patobiología; Argentina. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Virología; Argentina
Fil: Araujo, Flabio Ribeiro de. Empresa Brasileira de Pesquisa Agropecuária (Embrapa). Gado de Corte; Brasil
Fil: Rolls, Peter. Tick Fever Centre. Department of Agriculture & Fisheries; Australia
Fil: Schnittger, Leonhard. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patobiología; Argentina
Fil: Florin-Christensen, Monica. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patobiología; Argentina
Fil: Flores, Daniela. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Argentina
Fil: Tomazic, Mariela Luján. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Argentina
Fil: Schnittger, Leonhard. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Argentina
Fil: Florin-Christensen, Monica. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Argentina - Fuente
- Veterinary parasitology 287 : 109275. (Noviembre 2020)
- Materia
-
Babesiosis
Vacuna
Antígenos
Glicosiltransferasas
Babesia Bovis
Vaccines
Antigens
Glycosyltransferases - Nivel de accesibilidad
- acceso restringido
- Condiciones de uso
- Repositorio
- Institución
- Instituto Nacional de Tecnología Agropecuaria
- OAI Identificador
- oai:localhost:20.500.12123/8610
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Characterization of GASA-1, a new vaccine candidate antigen of Babesia bovisFlores, DanielaRodriguez, Anabel ElisaTomazic, Mariela LujánTorioni, Susana MartaEchaide, Ignacio EduardoZamorano, Patricia InesLangellotti, Cecilia AnaAraujo, Flabio Ribeiro deRolls, PeterSchnittger, LeonhardFlorin-Christensen, MónicaBabesiosisVacunaAntígenosGlicosiltransferasasBabesia BovisVaccinesAntigensGlycosyltransferasesSurface proteins bound to the cell membrane by glycosylphosphatidylinositol (GPI) anchors are considered essential for the survival of pathogenic protozoans. In the case of the tick-transmitted hemoparasite Babesia bovis, the most virulent causative agent of bovine babesiosis, the GPI-anchored proteome was recently unraveled by an in silico approach. In this work, one of the identified proteins, GASA-1 (GPI-Anchored Surface Antigen-1), was thoroughly characterized. GASA-1 is 179 aa long and has the characteristic features of a GPI-anchored protein, including a signal peptide, a hydrophilic core and a hydrophobic tail that harbors a GPI anchor signal. Transcriptomic analysis shows that it is expressed in pathogenic and attenuated B. bovis strains. Notably, the gasa-1 gene has syntenic counterparts in B. bigemina and B. ovata, which also encode GPI-anchored proteins. This is highly unusual since all piroplasmid GPI-anchored proteins described so far have been found to be species-specific. Sequencing of gasa-1 alleles from B. bovis geographical isolates originating from Argentina, USA, Brazil, Mexico and Australia showed over 98 % identity in both nucleotide and amino acid sequences. A recombinant form of GASA-1 (rGASA-1) was generated in E. coli and anti-rGASA-1 antibodies were raised in mice. Fixed and live immunofluorescence assays showed that GASA-1 is expressed in in vitro cultured B. bovis merozoites and surface-exposed. Moreover, incubation of B. bovis in vitro cultures with anti-GASA-1 antibodies partially, but significantly, reduced erythrocyte invasion, indicating that this protein bears neutralization-sensitive antibody epitopes. Splenocytes of rGASA-1-inoculated mice showed a specific proliferative response when exposed to the recombinant protein, indicating that GASA-1 bears T-cell epitopes. Finally, sera from a group of B. bovis-infected cattle reacted with the recombinant protein, demonstrating that GASA-1 is expressed during natural infection of bovines with B. bovis, and suggesting that it is immunodominant. The high degree of conservation among B. bovis isolates and the presence of syntenic genes in other Babesia species suggest a relevant role of GASA-1 and GASA-1-like proteins for parasite survival, especially considering that, due to their surface location, they are exposed to the selection pressure of the host immune system. The highlighted features of GASA-1 make it an interesting candidate for the development of vaccines against bovine babesiosis.Instituto de PatobiologíaFil: Flores, Daniela. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patobiología; ArgentinaFil: Rodriguez, Anabel Elisa. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patobiología; ArgentinaFil: Tomazic, Mariela Luján. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patobiología; ArgentinaFil: Torioni, Susana Marta. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela; ArgentinaFil: Echaide, Ignacio Eduardo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela; ArgentinaFil: Zamorano, Patricia Ines. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patobiología; Argentina. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Virología; ArgentinaFil: Langellotti, Cecilia Ana. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patobiología; Argentina. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Virología; ArgentinaFil: Araujo, Flabio Ribeiro de. Empresa Brasileira de Pesquisa Agropecuária (Embrapa). Gado de Corte; BrasilFil: Rolls, Peter. Tick Fever Centre. Department of Agriculture & Fisheries; AustraliaFil: Schnittger, Leonhard. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patobiología; ArgentinaFil: Florin-Christensen, Monica. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patobiología; ArgentinaFil: Flores, Daniela. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); ArgentinaFil: Tomazic, Mariela Luján. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); ArgentinaFil: Schnittger, Leonhard. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); ArgentinaFil: Florin-Christensen, Monica. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); ArgentinaElsevier2021-01-18T15:19:34Z2021-01-18T15:19:34Z2020-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/8610https://www.sciencedirect.com/science/article/abs/pii/S03044017203025570304-4017https://doi.org/10.1016/j.vetpar.2020.109275Veterinary parasitology 287 : 109275. (Noviembre 2020)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología Agropecuariaenginfo:eu-repograntAgreement/INTA/2019-PD-E5-I102-001/2019-PD-E5-I102-001/AR./Desarrollo de vacunas y tecnologías para mejorar las estrategias profilácticas y terapéuticas de las enfermedades que afectan la producción animal y la salud públicainfo:eu-repograntAgreement/INTA/2019-PD-E5-I105-001/2019-PD-E5-I105-001/AR./Patógenos animales: su interacción con el hospedador y el medio ambiente. 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dc.title.none.fl_str_mv |
Characterization of GASA-1, a new vaccine candidate antigen of Babesia bovis |
title |
Characterization of GASA-1, a new vaccine candidate antigen of Babesia bovis |
spellingShingle |
Characterization of GASA-1, a new vaccine candidate antigen of Babesia bovis Flores, Daniela Babesiosis Vacuna Antígenos Glicosiltransferasas Babesia Bovis Vaccines Antigens Glycosyltransferases |
title_short |
Characterization of GASA-1, a new vaccine candidate antigen of Babesia bovis |
title_full |
Characterization of GASA-1, a new vaccine candidate antigen of Babesia bovis |
title_fullStr |
Characterization of GASA-1, a new vaccine candidate antigen of Babesia bovis |
title_full_unstemmed |
Characterization of GASA-1, a new vaccine candidate antigen of Babesia bovis |
title_sort |
Characterization of GASA-1, a new vaccine candidate antigen of Babesia bovis |
dc.creator.none.fl_str_mv |
Flores, Daniela Rodriguez, Anabel Elisa Tomazic, Mariela Luján Torioni, Susana Marta Echaide, Ignacio Eduardo Zamorano, Patricia Ines Langellotti, Cecilia Ana Araujo, Flabio Ribeiro de Rolls, Peter Schnittger, Leonhard Florin-Christensen, Mónica |
author |
Flores, Daniela |
author_facet |
Flores, Daniela Rodriguez, Anabel Elisa Tomazic, Mariela Luján Torioni, Susana Marta Echaide, Ignacio Eduardo Zamorano, Patricia Ines Langellotti, Cecilia Ana Araujo, Flabio Ribeiro de Rolls, Peter Schnittger, Leonhard Florin-Christensen, Mónica |
author_role |
author |
author2 |
Rodriguez, Anabel Elisa Tomazic, Mariela Luján Torioni, Susana Marta Echaide, Ignacio Eduardo Zamorano, Patricia Ines Langellotti, Cecilia Ana Araujo, Flabio Ribeiro de Rolls, Peter Schnittger, Leonhard Florin-Christensen, Mónica |
author2_role |
author author author author author author author author author author |
dc.subject.none.fl_str_mv |
Babesiosis Vacuna Antígenos Glicosiltransferasas Babesia Bovis Vaccines Antigens Glycosyltransferases |
topic |
Babesiosis Vacuna Antígenos Glicosiltransferasas Babesia Bovis Vaccines Antigens Glycosyltransferases |
dc.description.none.fl_txt_mv |
Surface proteins bound to the cell membrane by glycosylphosphatidylinositol (GPI) anchors are considered essential for the survival of pathogenic protozoans. In the case of the tick-transmitted hemoparasite Babesia bovis, the most virulent causative agent of bovine babesiosis, the GPI-anchored proteome was recently unraveled by an in silico approach. In this work, one of the identified proteins, GASA-1 (GPI-Anchored Surface Antigen-1), was thoroughly characterized. GASA-1 is 179 aa long and has the characteristic features of a GPI-anchored protein, including a signal peptide, a hydrophilic core and a hydrophobic tail that harbors a GPI anchor signal. Transcriptomic analysis shows that it is expressed in pathogenic and attenuated B. bovis strains. Notably, the gasa-1 gene has syntenic counterparts in B. bigemina and B. ovata, which also encode GPI-anchored proteins. This is highly unusual since all piroplasmid GPI-anchored proteins described so far have been found to be species-specific. Sequencing of gasa-1 alleles from B. bovis geographical isolates originating from Argentina, USA, Brazil, Mexico and Australia showed over 98 % identity in both nucleotide and amino acid sequences. A recombinant form of GASA-1 (rGASA-1) was generated in E. coli and anti-rGASA-1 antibodies were raised in mice. Fixed and live immunofluorescence assays showed that GASA-1 is expressed in in vitro cultured B. bovis merozoites and surface-exposed. Moreover, incubation of B. bovis in vitro cultures with anti-GASA-1 antibodies partially, but significantly, reduced erythrocyte invasion, indicating that this protein bears neutralization-sensitive antibody epitopes. Splenocytes of rGASA-1-inoculated mice showed a specific proliferative response when exposed to the recombinant protein, indicating that GASA-1 bears T-cell epitopes. Finally, sera from a group of B. bovis-infected cattle reacted with the recombinant protein, demonstrating that GASA-1 is expressed during natural infection of bovines with B. bovis, and suggesting that it is immunodominant. The high degree of conservation among B. bovis isolates and the presence of syntenic genes in other Babesia species suggest a relevant role of GASA-1 and GASA-1-like proteins for parasite survival, especially considering that, due to their surface location, they are exposed to the selection pressure of the host immune system. The highlighted features of GASA-1 make it an interesting candidate for the development of vaccines against bovine babesiosis. Instituto de Patobiología Fil: Flores, Daniela. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patobiología; Argentina Fil: Rodriguez, Anabel Elisa. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patobiología; Argentina Fil: Tomazic, Mariela Luján. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patobiología; Argentina Fil: Torioni, Susana Marta. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela; Argentina Fil: Echaide, Ignacio Eduardo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela; Argentina Fil: Zamorano, Patricia Ines. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patobiología; Argentina. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Virología; Argentina Fil: Langellotti, Cecilia Ana. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patobiología; Argentina. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Virología; Argentina Fil: Araujo, Flabio Ribeiro de. Empresa Brasileira de Pesquisa Agropecuária (Embrapa). Gado de Corte; Brasil Fil: Rolls, Peter. Tick Fever Centre. Department of Agriculture & Fisheries; Australia Fil: Schnittger, Leonhard. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patobiología; Argentina Fil: Florin-Christensen, Monica. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patobiología; Argentina Fil: Flores, Daniela. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Argentina Fil: Tomazic, Mariela Luján. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Argentina Fil: Schnittger, Leonhard. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Argentina Fil: Florin-Christensen, Monica. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Argentina |
description |
Surface proteins bound to the cell membrane by glycosylphosphatidylinositol (GPI) anchors are considered essential for the survival of pathogenic protozoans. In the case of the tick-transmitted hemoparasite Babesia bovis, the most virulent causative agent of bovine babesiosis, the GPI-anchored proteome was recently unraveled by an in silico approach. In this work, one of the identified proteins, GASA-1 (GPI-Anchored Surface Antigen-1), was thoroughly characterized. GASA-1 is 179 aa long and has the characteristic features of a GPI-anchored protein, including a signal peptide, a hydrophilic core and a hydrophobic tail that harbors a GPI anchor signal. Transcriptomic analysis shows that it is expressed in pathogenic and attenuated B. bovis strains. Notably, the gasa-1 gene has syntenic counterparts in B. bigemina and B. ovata, which also encode GPI-anchored proteins. This is highly unusual since all piroplasmid GPI-anchored proteins described so far have been found to be species-specific. Sequencing of gasa-1 alleles from B. bovis geographical isolates originating from Argentina, USA, Brazil, Mexico and Australia showed over 98 % identity in both nucleotide and amino acid sequences. A recombinant form of GASA-1 (rGASA-1) was generated in E. coli and anti-rGASA-1 antibodies were raised in mice. Fixed and live immunofluorescence assays showed that GASA-1 is expressed in in vitro cultured B. bovis merozoites and surface-exposed. Moreover, incubation of B. bovis in vitro cultures with anti-GASA-1 antibodies partially, but significantly, reduced erythrocyte invasion, indicating that this protein bears neutralization-sensitive antibody epitopes. Splenocytes of rGASA-1-inoculated mice showed a specific proliferative response when exposed to the recombinant protein, indicating that GASA-1 bears T-cell epitopes. Finally, sera from a group of B. bovis-infected cattle reacted with the recombinant protein, demonstrating that GASA-1 is expressed during natural infection of bovines with B. bovis, and suggesting that it is immunodominant. The high degree of conservation among B. bovis isolates and the presence of syntenic genes in other Babesia species suggest a relevant role of GASA-1 and GASA-1-like proteins for parasite survival, especially considering that, due to their surface location, they are exposed to the selection pressure of the host immune system. The highlighted features of GASA-1 make it an interesting candidate for the development of vaccines against bovine babesiosis. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-11 2021-01-18T15:19:34Z 2021-01-18T15:19:34Z |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/20.500.12123/8610 https://www.sciencedirect.com/science/article/abs/pii/S0304401720302557 0304-4017 https://doi.org/10.1016/j.vetpar.2020.109275 |
url |
http://hdl.handle.net/20.500.12123/8610 https://www.sciencedirect.com/science/article/abs/pii/S0304401720302557 https://doi.org/10.1016/j.vetpar.2020.109275 |
identifier_str_mv |
0304-4017 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repograntAgreement/INTA/2019-PD-E5-I102-001/2019-PD-E5-I102-001/AR./Desarrollo de vacunas y tecnologías para mejorar las estrategias profilácticas y terapéuticas de las enfermedades que afectan la producción animal y la salud pública info:eu-repograntAgreement/INTA/2019-PD-E5-I105-001/2019-PD-E5-I105-001/AR./Patógenos animales: su interacción con el hospedador y el medio ambiente. Impacto en productividad, ecosistemas, sanidad animal y salud pública en el marco “Una Salud” |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/restrictedAccess |
eu_rights_str_mv |
restrictedAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
dc.source.none.fl_str_mv |
Veterinary parasitology 287 : 109275. (Noviembre 2020) reponame:INTA Digital (INTA) instname:Instituto Nacional de Tecnología Agropecuaria |
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INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuaria |
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tripaldi.nicolas@inta.gob.ar |
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