Inhibition of NF-κB-mediated inflammation in severe acute respiratory syndrome coronavirus-infected mice increases survival.
J Virol
; 88(2): 913-24, 2014 Jan.
Article
en En
| MEDLINE
| ID: mdl-24198408
ABSTRACT
Severe acute respiratory syndrome coronavirus (SARS-CoV) is the etiological agent of a respiratory disease that has a 10% mortality rate. We previously showed that SARS-CoV lacking the E gene (SARS-CoV-ΔE) is attenuated in several animal model systems. Here, we show that absence of the E protein resulted in reduced expression of proinflammatory cytokines, decreased numbers of neutrophils in lung infiltrates, diminished lung pathology, and increased mouse survival, suggesting that lung inflammation contributed to SARS-CoV virulence. Further, infection with SARS-CoV-ΔE resulted in decreased activation of NF-κB compared to levels for the wild-type virus. Most important, treatment with drugs that inhibited NF-κB activation led to a reduction in inflammation and lung pathology in both SARS-CoV-infected cultured cells and mice and significantly increased mouse survival after SARS-CoV infection. These data indicated that activation of the NF-κB signaling pathway represents a major contribution to the inflammation induced after SARS-CoV infection and that NF-κB inhibitors are promising antivirals in infections caused by SARS-CoV and potentially other pathogenic human coronaviruses.
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Regulación hacia Abajo
/
FN-kappa B
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Síndrome Respiratorio Agudo Grave
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Coronavirus Relacionado al Síndrome Respiratorio Agudo Severo
Tipo de estudio:
Prognostic_studies
Límite:
Animals
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Female
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Humans
Idioma:
En
Revista:
J Virol
Año:
2014
Tipo del documento:
Article
País de afiliación:
España