Announcement

Collapse
No announcement yet.

Proc Natl Acad Sci USA. Combined agonist?antagonist genome-wide functional screening identifies broadly active antiviral microRNAs

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • Proc Natl Acad Sci USA. Combined agonist?antagonist genome-wide functional screening identifies broadly active antiviral microRNAs

    Combined agonist?antagonist genome-wide functional screening identifies broadly active antiviral microRNAs (Proc Natl Acad Sci USA, abstract, edited)

    [Source: PNAS, original abstract, <cite cite="http://www.pnas.org/content/107/31/13830.short?rss=1">Combined agonist?antagonist genome-wide functional screening identifies broadly active antiviral microRNAs ? PNAS</cite>. Edited.]

    Combined agonist?antagonist genome-wide functional screening identifies broadly active antiviral microRNAs

    Diwakar Santhakumar a,b, Thorsten Forster b,c, Nouf N. Laqtom a,b,d, Rennos Fragkoudis e, Paul Dickinson b,c, Cei Abreu-Goodger f, Sergei A. Manakov f, Nila Roy Choudhury e, Samantha J. Griffiths b, Annaleen Vermeulen g, Anton J. Enright f, Bernadette Dutia e, Alain Kohl e, Peter Ghazal b,c, and Amy H. Buck a,b,1

    Author Affiliations
    a) Centre for Immunity, Infection and Evolution, University of Edinburgh, Edinburgh EH9 3JT, United Kingdom;
    b) Division of Pathway Medicine and Centre for Infectious Diseases, University of Edinburgh, Edinburgh EH16 4SB, United Kingdom;
    c) Centre for Systems Biology at Edinburgh, University of Edinburgh, Edinburgh EH9 3JD, United Kingdom;
    d) Department of Biology, King Abdulaziz University, Jeddah 21589, Saudi Arabia;
    e) The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Edinburgh EH9 1QH, United Kingdom;
    f) European Bioinformatics Institute, Cambridge CB10 1SD, United Kingdom; and
    g) Thermo Fisher Scientific, Dharmacon Products, Lafayette, CO 80026

    Communicated by Norman R. Pace, University of Colorado, Boulder, CO, June 28, 2010 (received for review April 26, 2010)


    Abstract

    Although the functional parameters of microRNAs (miRNAs) have been explored in some depth, the roles of these molecules in viral infections remain elusive. Here we report a general method for global analysis of miRNA function that compares the significance of both overexpressing and inhibiting each mouse miRNA on the growth properties of different viruses. Our comparative analysis of representatives of all three herpesvirus subfamilies identified host miRNAs with broad anti- and proviral properties which extend to a single-stranded RNA virus. Specifically, we demonstrate the broad antiviral capacity of miR-199a-3p and illustrate that this individual host-encoded miRNA regulates multiple pathways required and/or activated by viruses, including PI3K/AKT and ERK/MAPK signaling, oxidative stress signaling, and prostaglandin synthesis. Global miRNA expression analysis further demonstrated that the miR-199a/miR-214 cluster is down-regulated in both murine and human cytomegalovirus infection and manifests similar antiviral properties in mouse and human cells. Overall, we report a general strategy for examining the contributions of individual host miRNAs in viral infection and provide evidence that these molecules confer broad inhibitory potential against multiple viruses.

    * RNAi
    * herpesvirus
    * RNA virus
    * RNA processing
    * phosphatidylinositol-3-kinase-Akt signalling

    Footnotes
    * 1 To whom correspondence should be addressed. E-mail: a.buck@ed.ac.uk.
    * Author contributions: D.S., N.N.L., A.K., and A.H.B. designed research; D.S., N.N.L., R.F., and A.H.B. performed research; N.R.C., S.J.G., A.V., B.D., A.K., and P.G. contributed new reagents/analytic tools; D.S., T.F., N.N.L., P.D., C.A.-G., S.A.M., A.J.E., and A.H.B. analyzed data; and A.H.B. wrote the paper.
    * Conflict of interest statement: A.V. is, as of the publication date, employed, with fixed salaries, by Thermo Fisher Scientific, which offers for sale libraries of miRNA mimics and inhibitors.
    * This article contains supporting information online at https://www.pnas.org/lookup/suppl/do...DCSupplemental.
    Freely available online through the PNAS open access option.

    -
    -----
Working...
X