Identification of the 14-3-3 ß/α-A protein as a novel maternal peptidoglycan-binding protein that protects embryos of zebrafish against bacterial infections.
Dev Comp Immunol
; 114: 103867, 2021 01.
Article
em En
| MEDLINE
| ID: mdl-32931839
ABSTRACT
14-3-3 proteins are widespread in animals, but their functions and mechanisms remain poorly defined. Here we clearly demonstrate that 14-3-3 ß/α-A is a newly identified PGN-binding protein present abundantly in the eggs/embryos of zebrafish. We also show that recombinant 14-3-3 ß/α-A acts as a pattern recognition receptor capable of identifying the bacterial signature molecule PGN, binding the bacteria, and functions as an antibacterial effector molecule directly killing the bacteria. Importantly, microinjection of r14-3-3 ß/α-A into early embryos significantly enhanced the resistance of the embryos against pathogenic A. hydrophila challenge, and this enhanced bacterial resistance was markedly reduced by co-injection of anti-14-3-3 ß/α-A antibody. Collectively, these results indicate that 14-3-3 ß/α-A is a maternal PGN-binding protein that can protect the early embryos of zebrafish against pathogenic attacks, a novel role assigned to 14-3-3 ß/α-A proteins. This work also provides new insights into 14-3-3 proteins that are widely distributed in various animals.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Infecções Bacterianas
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Peixe-Zebra
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Peptidoglicano
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Proteínas de Peixe-Zebra
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Proteínas 14-3-3
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Receptores de Reconhecimento de Padrão
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Doenças dos Peixes
Tipo de estudo:
Diagnostic_studies
Limite:
Animals
Idioma:
En
Revista:
Dev Comp Immunol
Ano de publicação:
2021
Tipo de documento:
Article