Differential signaling by type-I and type-III interferons in mucosa.

Mucosal surfaces are barrier sites that protect the body from the outside environment. They have developed mechanisms to handle microbiota-associated triggers while remaining responsive to pathogens. Cells at mucosal surfaces rely on both the type-I and -III interferons (IFNs) as key cytokines to protect the epithelium itself and to prevent systemic spread of viral infections. Type-I and -III IFNs have been shown to use distinct receptors but similar JAK/STAT signaling cascades to elicit the induction of IFN-stimulated genes. These overlapping cascades led to the original hypothesis that both IFNs provided redundant functions at mucosal surfaces. However, accumulating evidence points toward a different model where each IFN provides a unique protective and homeostatic function as well as distinct antiviral protection to epithelial cells. This review will highlight recent work shedding light on the differences in how both type -I and -III IFNs induce receptor-mediated signaling to protect mucosal surfaces. Copyright © 2023 The Author(s). Published by Elsevier Ltd.. All rights reserved.

Citation

Megan L Stanifer, Steeve Boulant. Differential signaling by type-I and type-III interferons in mucosa. Current opinion in immunology. 2024 Feb;86:102400

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PMID: 38118395

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