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ABSTRACT Immune regulation of cellular metabolism can be responsible for successful responses to invading pathogens. Viruses alter their hosts' cellular metabolism to facilitate
infection. Conversely, the innate antiviral responses of mammalian cells target these metabolic pathways to restrict viral propagation. We identified miR-130b and miR-185 as hepatic
microRNAs (miRNAs) whose expression is stimulated by 25-hydroxycholesterol (25-HC), an antiviral oxysterol secreted by interferon-stimulated macrophages and dendritic cells, during hepatitis
C virus (HCV) infection. However, 25-HC only directly stimulated miR-185 expression, whereas HCV regulated miR-130b expression. Independently, miR-130b and miR-185 inhibited HCV infection.
In particular, miR-185 significantly restricted host metabolic pathways crucial to the HCV life cycle. Interestingly, HCV infection decreased miR-185 and miR-130b levels to promote lipid
accumulation and counteract 25-HC's antiviral effect. Furthermore, miR-185 can inhibit other viruses through the regulation of immunometabolic pathways. These data establish these
microRNAs as a key link between innate defenses and metabolism in the liver. Access through your institution Buy or subscribe This is a preview of subscription content, access via your
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* Learn about institutional subscriptions * Read our FAQs * Contact customer support SIMILAR CONTENT BEING VIEWED BY OTHERS _MIR-27B_ TARGETS _MAIP1_ TO MEDIATE LIPID ACCUMULATION IN
CULTURED _HUMAN_ AND _MOUSE_ HEPATIC CELLS Article Open access 24 June 2023 MIR-23A/B SUPPRESS CGAS-MEDIATED INNATE AND AUTOIMMUNITY Article Open access 25 March 2021 MACROPHAGE
MIR-4524A-5P/TBP PROMOTES Β-TRCP -TIM3 COMPLEX ACTIVATION AND TGFΒ RELEASE AND AGGRAVATES NAFLD-ASSOCIATED FIBROSIS Article Open access 19 April 2025 ACCESSION CODES PRIMARY ACCESSIONS GENE
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B_ 877, 1815–1819 (2009). Article CAS Google Scholar Download references ACKNOWLEDGEMENTS We thank A. Ridsdale and the National Research Council of Canada (NRC) coherent anti-Stokes Raman
spectroscopy (CARS) facility along with Z. Jakubek and the NRC measurement science and standards (MSS) imaging facility for technical assistance. mRNA microarray profiling was performed by
the Centre for Applied Genomics, The Hospital for Sick Children, Toronto, Ontario, Canada. Lipid profiling was performed by A. Moses and the Lipid Analysis Core Service, University of
Alberta, Edmonton, Alberta, Canada. We also would like to thank E. Riklow for assistance with Dengue virus experiments. This study was supported by funding from Natural Sciences and
Engineering Research Council (NSERC) of Canada grant (298496 to J.P.P.) and Canadian Institutes of Health Research (CIHR) grants (136807, 232063 to J.P.P., R.S.R. and D.L.T.; 130365 to
K.J.R.; 28637 to T.C.H.). R.S., D.M.J., R.C. and N.G.T. would like to thank the National CIHR Research Training Program in Hepatitis C (NCRTP-HepC) for training and funding. R.S. was
supported by a Vanier Canadian Graduate scholarship. D.G.R. was supported by a CIHR graduate scholarship. D.Ö. was supported by a post-doctoral fellowship from the CIHR. A.K. was supported
by NSERC–Collaborative Research and Training Experience (CREATE) and Alberta Innovates–Health Solutions postdoctoral fellowships. T.C.H. was supported by a Tier 1 Canada Research Chair.
AUTHOR INFORMATION AUTHORS AND AFFILIATIONS * Department of Biochemistry, Microbiology and Immunology, University of Ottawa, Ottawa, Ontario, Canada Ragunath Singaravelu, Prashanth
Srinivasan, Curtis Quan, My-Anh Nguyen, Katey J Rayner & John Paul Pezacki * Life Sciences Division, National Research Council of Canada, Ottawa, Ontario, Canada Ragunath Singaravelu,
Shifawn O'Hara, Prashanth Srinivasan, Curtis Quan, Rodney K Lyn, Dennis Özcelik, Yanouchka Rouleau & John Paul Pezacki * Immunology and Infectious Diseases, Faculty of Medicine,
Memorial University of Newfoundland, St. John's, Newfoundland, Canada Daniel M Jones, Nathan G Taylor & Rodney S Russell * Department of Medical Microbiology and Immunology,
University of Alberta and Li Ka Shing Institute of Virology, Katz Centre for Pharmacy and Health Research, Edmonton, Alberta, Canada Ran Chen, Rineke H Steenbergen & David Lorne Tyrrell
* Center for Innovative Cancer Therapeutics, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada Dominic G Roy * Department of Cell Biology, University of Alberta, Edmonton, Alberta,
Canada Anil Kumar & Tom C Hobman * Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario, Canada Rodney K Lyn, Dennis Özcelik & John Paul Pezacki
* University of Ottawa Heart Institute, Ottawa, Ontario, Canada My-Anh Nguyen & Katey J Rayner Authors * Ragunath Singaravelu View author publications You can also search for this author
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CONTRIBUTIONS R.S., K.J.R., T.C.H., D.L.T., R.S.R. and J.P.P. conceived and designed experiments. R.S., S.O'H., D.M.J., N.G.T. and R.S.R. performed cell culture and sample collection
for experiments using JFH-1T. R.S. and R.H.S. performed cell culture and sample collection for experiments using JFH-HS. R.S. and R.K.L. performed CARS microscopy experiments. R.C. and
D.L.T. performed mice experiments. M.-A.N and K.J.R. performed macrophage cell culture and sample collection. R.C. performed lipid analysis and immunofluorescence. R.S. and A.K. performed
cell culture and sample collection for experiments dealing with DENV. R.S. and D.G.R. performed cell culture and sample collection for experiments dealing with VSV. R.S., S.O'H., P.S.,
C.Q., D.Ö. and Y.R. performed all sample processing and downstream analysis. R.S., R.S.R. and J.P.P. analyzed the data. R.S. and J.P.P. wrote the manuscript. CORRESPONDING AUTHOR
Correspondence to John Paul Pezacki. ETHICS DECLARATIONS COMPETING INTERESTS The authors declare no competing financial interests. SUPPLEMENTARY INFORMATION SUPPLEMENTARY TEXT AND FIGURES
Supplementary Results, Supplementary Figures 1–18 and Supplementary Tables 1–6. (PDF 3099 kb) RIGHTS AND PERMISSIONS Reprints and permissions ABOUT THIS ARTICLE CITE THIS ARTICLE
Singaravelu, R., O'Hara, S., Jones, D. _et al._ MicroRNAs regulate the immunometabolic response to viral infection in the liver. _Nat Chem Biol_ 11, 988–993 (2015).
https://doi.org/10.1038/nchembio.1940 Download citation * Received: 04 March 2015 * Accepted: 11 September 2015 * Published: 19 October 2015 * Issue Date: December 2015 * DOI:
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