Cited by 3,329interferon and immune responsesImmune Response and InflammationNF-κB Signaling Pathways

Identification and Characterization of MAVS, a Mitochondrial Antiviral Signaling Protein that Activates NF-κB and IRF3

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Seth, Rashu B., Sun, Lijun, Ea, Chee-Kwee, Chen, Zhijian J.·2005·Cell

Abstract

Viral infection triggers host innate immune responses through activation of the transcription factors NF-kappaB and IRF 3, which coordinately regulate the expression of type-I interferons such as interferon-beta (IFN-beta). Herein, we report the identification of a novel protein termed MAVS (mitochondrial antiviral signaling), which mediates the activation of NF-kappaB and IRF 3 in response to viral infection. Silencing of MAVS expression through RNA interference abolishes the activation of NF-kappaB and IRF 3 by viruses, thereby permitting viral replication. Conversely, overexpression of MAVS induces the expression of IFN-beta through activation of NF-kappaB and IRF 3, thus boosting antiviral immunity. Epistasis experiments show that MAVS is required for the phosphorylation of IRF 3 and IkappaB and functions downstream of RIG-I, an intracellular receptor for viral RNA. MAVS contains an N-terminal CARD-like domain and a C-terminal transmembrane domain, both of which are essential for MAVS signaling. The transmembrane domain targets MAVS to the mitochondria, implicating a new role of mitochondria in innate immunity.

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Crossref · 10.1016/j.cell.2005.08.012

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  • MAVS localization to the outer mitochondrial membrane is indispensable for its function in RLR signaling.

    “A breakthrough in establishing the role for mitochondria in RLR-activated antiviral immunity was the identification of the RLR mitochondrial adaptor protein MAVS (mitochondrial antiviral-signaling protein)(Kawai et al., 2005; Meylan et al., 2005; Seth et al., 2005; Xu et al., 2005) localization to the outer mitochondrial membrane is indispensable for its function.”

    From Mitochondria in the Regulation of Innate and Adaptive Immunity (2015) · cites this paper as Seth et al., 2005

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Authors
Seth, R. B., Sun, L., Ea, C.-K., & Chen, Z. J.
Affiliations
Howard Hughes Medical Institute (US)
Corresponding author
Chen, Zhijian J.
Venue
Cell
Publisher
Elsevier BV
Published
2005-09
Volume
122
Issue
5
Pages
669-682
ISSN
0092-8674 (ISSN-L)
OpenAlex
W2107513655
Cited by
3,329
References
38
Citations by year
2026: 145 · 2025: 162 · 2024: 165 · 2023: 174 · 2022: 173 · 2021: 221 · 2020: 212 · 2019: 166 · 2018: 168 · 2017: 153 · 2016: 145 · 2015: 150 · 2014: 182 · 2013: 166 · 2012: 147
FWCI
41.99
Type
journal article
Language
en
Open access
Locations
  • Cell (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institute of Allergy and Infectious Diseases (R01-AI 60919, R01AI060919)
  • National Center for Research Resources (1-S10-RR19406, S10RR019406)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › interferon and immune responses
  • Life Sciences › Immunology and Microbiology › Immunology › Immune Response and Inflammation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › NF-κB Signaling Pathways
Keywords
MAVS, mitochondrial antiviral signaling, NF-κB activation, IRF3 activation, interferon-beta, type I interferon, antiviral innate immunity, RIG-I, CARD domain, transmembrane domain, mitochondrial targeting, IκB phosphorylation, viral RNA sensing, RNAi knockdown
MeSH terms
Amino Acid Sequence, Animals, Cell Line, DNA-Binding Proteins, HeLa Cells, Humans, Immunity, Innate, Interferons, Membrane Proteins, Mitochondria, Molecular Sequence Data, Respirovirus Infections, RNA, Double-Stranded, Transcription Factors, Virus Replication, Signal Transduction, Gene Expression Regulation, Bacterial, NF-kappa B, Sequence Alignment, Interferon-beta, Protein Serine-Threonine Kinases, Gene Silencing, Mitochondrial Proteins, Sendai virus, Interferon Regulatory Factor-3, Interferon Regulatory Factor-7

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