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Essential role of mda-5 in type I IFN responses to polyriboinosinic:polyribocytidylic acid and encephalomyocarditis picornavirus

Open access
Gitlin, Leonid, Barchet, Winfried, Gilfillan, Susan, Cella, Marina, Beutler, Bruce, Flavell, Richard A., Diamond, Michael S., Colonna, Marco·2006·Proceedings of the National Academy of Sciences

Abstract

The innate immune system recognizes viral dsRNA through two distinct pathways; the Toll-like receptor 3 (TLR3) pathway detects dsRNA phagocytosed in endosomes; the helicases retinoic acid-induced protein I (RIG-I) and melanoma differentiation-associated gene-5 (mda-5) detect cytoplasmic dsRNA generated during viral replication. Both RIG-I and mda-5 can bind polyriboinosinic:polyribocytidylic acid (polyI:C), the synthetic analog of viral dsRNA, and mediate type I IFN responses to polyI:C and multiple RNA viruses in vitro . We generated mda-5-deficient mice and showed that mda-5 is the dominant receptor mediating type I IFN secretion in response to polyI:C in vitro and in vivo . Moreover, mda-5−/− mice exhibited a selectively impaired antiviral response to encephalomyocarditis picornavirus, indicating functional specialization of mda-5 in vivo .

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Metadata

Authors
Gitlin, L., Barchet, W., Gilfillan, S., Cella, M., Beutler, B., Flavell, R. A., Diamond, M. S., & Colonna, M.
Venue
Proceedings of the National Academy of Sciences
Published
2006-05-30
Volume
103
Issue
22
Pages
8459-8464
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2065554630
Cited by
1,169
References
7
FWCI
35.44
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Essential role of mda-5 in type I IFN responses to polyriboinosinic:polyribocytidylic acid and encephalomyocarditis picornavirus. https://app.cochat.ai/papers/10.1073/pnas.0603082103
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Gitlin, L., Barchet, W., Gilfillan, S., Cella, M., Beutler, B., Flavell, R. A., Diamond, M. S., & Colonna, M. (2006). Essential role of mda-5 in type I IFN responses to polyriboinosinic:polyribocytidylic acid and encephalomyocarditis picornavirus. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.0603082103

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