Interferon type I gene expression in chronic hepatitis C.
Lab Invest
; 84(9): 1148-59, 2004 Sep.
Article
en En
| MEDLINE
| ID: mdl-15208644
ABSTRACT
Hepatitis C virus (HCV) frequently causes chronic liver disease. The cause of viral persistence might be an inappropriate type I interferon (IFN) induction. To analyze the host's IFN response in chronic hepatitis C, we measured the transcription level of type I IFN genes as well as type I IFN-regulated genes in liver tissue and corresponding blood samples from patients with chronic hepatitis C, nonviral liver diseases, and a suspected but later excluded liver disease. Competitive and real-time RT-PCR assays were used to quantify the messenger RNA (mRNA) levels of all known IFN-alpha, IFN-beta, and IFN-lambda genes and those of some IFN-regulated genes. We failed to detect any hepatic type I IFN mRNA induction, although liver tissue of chronic hepatitis C patients contained high numbers of some type I IFN-inducible effector mRNA molecules. Analysis of peripheral blood samples, however, showed a clear type I IFN induction. Parallel experiments employing HCV replicon cell lines revealed that replication of HCV RNA is not sufficient to induce any type I IFN nor to induce directly type I IFN-regulated genes such as MxA. In conclusion, our data provide evidence for the absence of an induction of type I IFN genes by HCV in the human liver and argue for a further development of type I IFN-based therapies.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Interferón Tipo I
/
Regulación Viral de la Expresión Génica
/
Hepacivirus
/
Hepatitis C Crónica
Límite:
Adolescent
/
Adult
/
Aged
/
Female
/
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
Lab Invest
Año:
2004
Tipo del documento:
Article
País de afiliación:
Alemania