Identification of a Predominantly Interferon-λ-Induced Transcriptional Profile in Murine Intestinal Epithelial Cells

• Published in: Frontiers in immunology 2017-10, Vol.8, p.1302-1302
• Main Authors: Selvakumar, Tharini A, Bhushal, Sudeep, Kalinke, Ulrich, Wirth, Dagmar, Hauser, Hansjörg, Köster, Mario, Hornef, Mathias W
• Format: Article
• Language: English
• Subjects: gastrointestinal tract; Immunology; interferon-lambda; interleukin 28 receptor; intestinal epithelium; transcription
• ISSN: 1664-3224; 1664-3224
• DOI: 10.3389/fimmu.2017.01302

Type I (α and β) and type III (λ) interferons (IFNs) induce the expression of a large set of antiviral effector molecules their respective surface membrane receptors. Whereas most cell types respond to type I IFN, type III IFN preferentially acts on epithelial cells and protects mucosal organs such as the lung and gastrointestinal tract. Despite the engagement of different receptor molecules, the type I and type III IFN-induced signaling cascade and upregulated gene profile is thought to be largely identical. Here, we comparatively analyzed the response of gut epithelial cells to IFN-β and IFN-λ and identified a set of genes predominantly induced by IFN-λ . We confirm the influence of epithelial cell polarization for enhanced type III receptor expression and demonstrate the induction of predominantly IFN-λ -induced genes in the gut epithelium . Our results suggest that IFN-λ targets the epithelium and induces genes to adjust the antiviral host response to the requirements at mucosal body sites.