Babesia bovis RON2 binds to bovine erythrocytes through a highly conserved epitope

B. bovis invasion of bovine erythrocytes requires tight junction formation involving AMA-1/RON2 complex interaction. RON2 has been considered a vaccine candidate since antibodies targeting the protein can inhibit parasite invasion of target cells; however, the mechanism controlling B. bovis RON2 int...

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Autores:
Cuy Chaparro, Laura
Barney, Danny
Arevalo-Pinzon, Gabriela
Reyes Santofimio, César Mauricio
Moreno-Perez, Darwin Andres
Patarroyo, Manuel-Alfonso
Tipo de recurso:
Article of investigation
Fecha de publicación:
2024
Institución:
Universidad de Ciencias Aplicadas y Ambientales U.D.C.A
Repositorio:
Repositorio Institucional UDCA
Idioma:
eng
OAI Identifier:
oai:repository.udca.edu.co:11158/5622
Acceso en línea:
https://repository.udca.edu.co/handle/11158/5622
https://doi.org/10.1016/j.vetpar.2023.110081
Palabra clave:
Eritrocitos
Epítopos
Proteínas Protozoarias
Babesia bovis
Péptidos
Ganado bovino
Rights
openAccess
License
https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode.es
Description
Summary:B. bovis invasion of bovine erythrocytes requires tight junction formation involving AMA-1/RON2 complex interaction. RON2 has been considered a vaccine candidate since antibodies targeting the protein can inhibit parasite invasion of target cells; however, the mechanism controlling B. bovis RON2 interaction with red blood cells is not yet fully understood. This study was thus aimed at identifying B. bovis RON2 protein regions associated with interaction with bovine erythrocytes. Natural selection analysis of the ron2 gene identified predominantly negative selection signals in the C-terminal region. Interestingly, protein-cell and competition assays highlighted the RON2-C region’s role in peptide 42918-mediated erythrocyte binding, probably to a sialoglycoprotein receptor. This peptide (1218SFIMVKPPALHCVLKPVETL1237) lies within an intrinsically disordered region of the RON2 secondary structure flanked by two helical residues. The study provides, for the first time, valuable insights into RON2’s role in interaction with its target cells. Future studies are required for studying the peptide’s potential as an anti-B. bovis vaccine component