Abstract
Activators of innate immunity may have the potential to combat a broad range of infectious agents. We report that treatment with bacterial flagellin prevented rotavirus (RV) infection in mice and cured chronically RV-infected mice. Protection was independent of adaptive immunity and interferon (IFN, type I and II) and required flagellin receptors Toll-like receptor 5 (TLR5) and NOD-like receptor C4 (NLRC4). Flagellin-induced activation of TLR5 on dendritic cells elicited production of the cytokine interleukin-22 (IL-22), which induced a protective gene expression program in intestinal epithelial cells. Flagellin also induced NLRC4-dependent production of IL-18 and immediate elimination of RV-infected cells. Administration of IL-22 and IL-18 to mice fully recapitulated the capacity of flagellin to prevent or eliminate RV infection and thus holds promise as a broad-spectrum antiviral agent. Copyright2014 by the American Association for the Advancement of Science; all rights reserved.
Original language | English (US) |
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Pages (from-to) | 861-865 |
Number of pages | 5 |
Journal | Science |
Volume | 346 |
Issue number | 6211 |
DOIs | |
State | Published - Nov 14 2014 |
All Science Journal Classification (ASJC) codes
- General