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Updated: Mar 31, 2026

Monitoring Activation of the Antiviral Pattern Recognition Receptors RIG-I And PKR By Limited Protease Digestion and Native PAGE
Published on: July 29, 2014
Nlrp6 regulates intestinal antiviral innate immunity
Penghua Wang1, Shu Zhu2, Long Yang1
1Section of Infectious Diseases, Yale University School of Medicine, 300 Cedar Street, New Haven, CT 06510, USA. Department of Microbiology and Immunology, New York Medical College, Valhalla, NY 10595, USA.
Abstract:
The nucleotide-binding oligomerization domain-like receptor (Nlrp) 6 maintains gut microbiota homeostasis and regulates antibacterial immunity. We now report a role for Nlrp6 in the control of enteric virus infection. Nlrp6(-/-) and control mice systemically challenged with encephalomyocarditis virus had similar mortality; however, the gastrointestinal tract of Nlrp6(-/-) mice exhibited increased viral loads. Nlrp6(-/-) mice orally infected with encephalomyocarditis virus had increased mortality and viremia compared with controls. Similar results were observed with murine norovirus 1. Nlrp6 bound viral RNA via the RNA helicase Dhx15 and interacted with mitochondrial antiviral signaling protein to induce type I/III interferons (IFNs) and IFN-stimulated genes (ISGs). These data demonstrate that Nlrp6 functions with Dhx15 as a viral RNA sensor to induce ISGs, and this effect is especially important in the intestinal tract.
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