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Related Experiment Video

Updated: May 13, 2026

Monitoring Activation of the Antiviral Pattern Recognition Receptors RIG-I And PKR By Limited Protease Digestion and Native PAGE

Monitoring Activation of the Antiviral Pattern Recognition Receptors RIG-I And PKR By Limited Protease Digestion and Native PAGE

Published on: July 29, 2014

RIG-I goes beyond naked recognition.

J Bradford Bowzard¹, Priya Ranjan, Suryaprakash Sambhara

¹Immunology and Pathogenesis Branch, Influenza Division, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, 1600 Clifton Road, Atlanta, GA 30329, USA.

Cell Host & Microbe

|March 19, 2013

Summary

This summary is machine-generated.

Incoming viral RNA genomes bound to nucleocapsids are recognized by the immune system early in viral replication. This binding is sufficient to activate innate immune sensors, clarifying a key step in host defense against viruses.

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Last Updated: May 13, 2026

Monitoring Activation of the Antiviral Pattern Recognition Receptors RIG-I And PKR By Limited Protease Digestion and Native PAGE

Monitoring Activation of the Antiviral Pattern Recognition Receptors RIG-I And PKR By Limited Protease Digestion and Native PAGE

Published on: July 29, 2014

Biomolecular Detection employing the Interferometric Reflectance Imaging Sensor (IRIS)

Biomolecular Detection employing the Interferometric Reflectance Imaging Sensor (IRIS)

Published on: May 3, 2011

Area of Science:

Virology and Immunology
Innate Immune System Activation
Viral RNA Recognition

Background:

The precise timing of viral RNA recognition by the immune system during viral replication remains largely unknown.
Understanding this initial recognition event is crucial for developing effective antiviral therapies.

Discussion:

Weber et al. demonstrate that viral RNA genomes, while still bound by nucleocapsid proteins, can trigger innate immune responses.
This suggests that the nucleocapsid-bound genome itself acts as a pathogen-associated molecular pattern (PAMP).

Key Insights:

Incoming nucleocapsid-bound viral RNA is sufficient to engage and activate innate immune sensors.
This early recognition event occurs prior to or independent of genome release or replication.
Identifies a critical molecular trigger for the host antiviral defense cascade.

Outlook:

Further research can explore the specific innate immune sensors that interact with nucleocapsid-bound RNA.
This finding may pave the way for novel therapeutic strategies targeting early viral recognition.
Implications for understanding viral pathogenesis and host-pathogen interactions.