TRIM25 RING-finger E3 ubiquitin ligase is essential for RIG-I-mediated antiviral activity (original) (raw)

Nature volume 446, pages 916–920 (2007)Cite this article

Abstract

Retinoic-acid-inducible gene-I (RIG-I; also called DDX58) is a cytosolic viral RNA receptor that interacts with MAVS (also called VISA, IPS-1 or Cardif) to induce type I interferon-mediated host protective innate immunity against viral infection1,2,3,4,5,6. Furthermore, members of the tripartite motif (TRIM) protein family, which contain a cluster of a RING-finger domain, a B box/coiled-coil domain and a SPRY domain, are involved in various cellular processes, including cell proliferation and antiviral activity7. Here we report that the amino-terminal caspase recruitment domains (CARDs) of RIG-I undergo robust ubiquitination induced by TRIM25 in mammalian cells. The carboxy-terminal SPRY domain of TRIM25 interacts with the N-terminal CARDs of RIG-I; this interaction effectively delivers the Lys 63-linked ubiquitin moiety to the N-terminal CARDs of RIG-I, resulting in a marked increase in RIG-I downstream signalling activity. The Lys 172 residue of RIG-I is critical for efficient TRIM25-mediated ubiquitination and for MAVS binding, as well as the ability of RIG-I to induce antiviral signal transduction. Furthermore, gene targeting demonstrates that TRIM25 is essential not only for RIG-I ubiquitination but also for RIG-I-mediated interferon-β production and antiviral activity in response to RNA virus infection. Thus, we demonstrate that TRIM25 E3 ubiquitin ligase induces the Lys 63-linked ubiquitination of RIG-I, which is crucial for the cytosolic RIG-I signalling pathway to elicit host antiviral innate immunity.

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Acknowledgements

This work was supported by US Public Health Service grants (J.U.J.), the exchange programme between Harvard Medical School and the graduate training programme 1071 at the Friedrich-Alexander University Erlangen-Nuremberg, Germany (M.U.G.), and a Korea Research Foundation Grant (C.-H.J.). We thank A. Garcia-Sastre, D.-E. Zhang and S. Whelan for providing reagents, and R. Tomaino and J. Nagel for mass spectrometry. We also thank all members of the Tumor Virology Division, New England Primate Research Center, for discussions.

Author Contributions M.U.G. performed all aspects of this study. Y.C.S., C.-H.J. and C.L. assisted in experimental design and in collecting the data. T.U. and S.I. performed the in vitro ubiquitination assay and generated _Trim25_-/- MEFs. L.S. and Z.C. generated the MAVS construct and RIG-I antibody. T.O. and S.A. generated the RIG-I construct and _RIG-I_-/- MEFs. M.U.G. and J.U.J. organized this study and wrote the paper. All authors discussed the results and commented on the manuscript.

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Authors and Affiliations

  1. Department of Microbiology and Molecular Genetics and Tumor Virology Division, New England Primate Research Center, Harvard Medical School, 1 Pine Hill Drive, Southborough, Massachusetts 01772, USA,
    Michaela U. Gack, Young C. Shin, Chul-Hyun Joo, Chengyu Liang & Jae U. Jung
  2. Institute for Clinical and Molecular Virology, Friedrich-Alexander University Erlangen-Nuremberg, 91054 Erlangen, Germany,
    Michaela U. Gack
  3. Department of Microbiology, University of Ulsan College of Medicine, Seoul 138-736, South Korea,
    Chul-Hyun Joo
  4. Department of Geriatric Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-8655, Japan,
    Tomohiko Urano & Satoshi Inoue
  5. Research Center for Genomic Medicine, Saitama Medical School, Saitama 350-124-2, Japan,
    Tomohiko Urano & Satoshi Inoue
  6. Department of Molecular Biology, University of Texas Southwestern Medical Center, Dallas, Texas 75390-9148, USA,
    Lijun Sun & Zhijian Chen
  7. Department of Host Defense, Japan Science and Technology Agency, Osaka 565-0871, Japan,
    Osamu Takeuchi & Shizuo Akira

Authors

  1. Michaela U. Gack
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  2. Young C. Shin
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  3. Chul-Hyun Joo
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  4. Tomohiko Urano
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  5. Chengyu Liang
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  6. Lijun Sun
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  7. Osamu Takeuchi
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  8. Shizuo Akira
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  9. Zhijian Chen
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  10. Satoshi Inoue
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  11. Jae U. Jung
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Correspondence toJae U. Jung.

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Supplementary information

Supplementary Figures

This file contains Supplementary Figures 1-10 with Legends. The Supplementary Figures provide additional information on the Lys63-linked ubiquitination of RIG-I and the role of RIG-I ubiquitination in its signaling activity. They also show more data to support the essential role of TRIM25-mediated ubiquitination in RIG-I signal transduction and host anti-viral activity. (PDF 3300 kb)

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Gack, M., Shin, Y., Joo, CH. et al. TRIM25 RING-finger E3 ubiquitin ligase is essential for RIG-I-mediated antiviral activity.Nature 446, 916–920 (2007). https://doi.org/10.1038/nature05732

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