Retinoic acid-inducible gene-I is constitutively expressed and involved in IFN-γ-stimulated CXCL9–11 production in intestinal epithelial cells
Abstract Retinoic acid-inducible gene-I (RIG-I) is a member of the DExH/D family proteins, and plays an important role in antiviral response via interferon-stimulated genes (ISGs) and type 1 IFN. In this study, the roles of RIG-I in the epithelial cells in the cross-talk between type 2 IFN and induc...
Gespeichert in:
Veröffentlicht in: | Immunology letters 2009-03, Vol.123 (1), p.9-13 |
---|---|
Hauptverfasser: | , , , , , , , , , , , , , , |
Format: | Artikel |
Sprache: | eng |
Schlagworte: | |
Online-Zugang: | Volltext |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | Abstract Retinoic acid-inducible gene-I (RIG-I) is a member of the DExH/D family proteins, and plays an important role in antiviral response via interferon-stimulated genes (ISGs) and type 1 IFN. In this study, the roles of RIG-I in the epithelial cells in the cross-talk between type 2 IFN and inducible chemokines production are high-lighted. The results showed that RIG-I was constitutively expressed in normal surface epithelia lining the colonic mucosa. RIG-I was constitutively expressed in the epithelial cell lines HT-29, and IFN-γ and TNF-α enhanced the RIG-I expression in a dose-dependent manner. IFN-γ was shown to stimulate CXCL9–11 production, and RNA interference against RIG-I resulted in significant decrease of IFN-γ-induced CXCL9–11 productions. These results suggest that RIG-I play an important role in the cross-talk between inflammatory cytokines and immune cell trafficking. In conclusion, RIG-I might regulate the gut barrier function in homeostatic and inflammatory conditions. |
---|---|
ISSN: | 0165-2478 1879-0542 |
DOI: | 10.1016/j.imlet.2009.01.008 |