African swine fever virus early protein pI73R suppresses the type-I IFN promoter activities.
Virus Res
; 343: 199342, 2024 05.
Article
en En
| MEDLINE
| ID: mdl-38408646
ABSTRACT
African swine fever virus is known to suppress type-I interferon (IFN) responses. The main objective of this study was to screen early-expressed viral genes for their ability to suppress IFN production. Out of 16 early genes examined, I73R exhibited robust suppression of cGAS-STING-induced IFN-ß promoter activities, impeding the function of both IRF3 and NF-κB transcription factors. As a result, I73R obstructed IRF3 nuclear translocation following the treatment of cells with poly(dAdT), a strong inducer of the cGAS-STING signaling pathway. Although the I73R protein exhibits structural homology with the Zα domain binding to the left-handed helical form of DNA known as Z-DNA, its ability to suppress cGAS-STING induction of IFN-ß was independent of Z-DNA binding activity. Instead, the α3 and ß1 domains of I73R played a significant role in suppressing cGAS-STING induction of IFN-ß. These findings offer insights into the protein's functions and support its role as a virulence factor.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Interferón Tipo I
/
Fiebre Porcina Africana
/
Virus de la Fiebre Porcina Africana
/
ADN de Forma Z
Límite:
Animals
Idioma:
En
Revista:
Virus Res
Asunto de la revista:
VIROLOGIA
Año:
2024
Tipo del documento:
Article
País de afiliación:
Estados Unidos
Pais de publicación:
Países Bajos