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06:02
Arbovirus Infections As Screening Tools for the Identification of Viral Immunomodulators and Host Antiviral Factors
Published on: September 13, 2018
Identification of virus-encoded microRNAs
Sébastien Pfeffer1, Mihaela Zavolan, Friedrich A Grässer
1Laboratory of RNA Molecular Biology, The Rockefeller University, 1230 York Avenue, Box 186, New York, NY 10021, USA.
Science (New York, N.Y.)
|May 1, 2004
Summary
Epstein-Barr virus (EBV) infection in human cells involves small RNAs guiding RNA silencing. EBV expresses microRNAs (miRNAs) that regulate host and viral gene expression through RNA silencing pathways.
Area of Science:
- Molecular Biology
- Virology
- Genetics
Background:
- RNA silencing is a fundamental biological process mediated by small RNAs derived from double-stranded RNA.
- Understanding viral interactions with host cell machinery is crucial for comprehending pathogenesis and developing antiviral strategies.
Purpose of the Study:
- To investigate the role and mechanisms of RNA silencing during Epstein-Barr virus (EBV) infection in human cells.
- To identify viral microRNAs (miRNAs) expressed by EBV and their potential functions in regulating gene expression.
Main Methods:
- Analysis of small RNA profiles in human cells infected with EBV.
- Identification and characterization of EBV-encoded microRNA genes.
- Bioinformatic prediction of target messenger RNAs (mRNAs) for viral miRNAs.
Main Results:
- EBV infection induces a distinct small RNA profile in human cells.
- Several microRNA genes are expressed by EBV during infection.
- These viral miRNAs are predicted to target and regulate both host and viral gene expression.
Conclusions:
- Epstein-Barr virus actively utilizes the RNA silencing pathway through its expressed microRNAs.
- Viral miRNAs play a significant role in modulating host and viral gene expression during EBV infection.
- This highlights a novel mechanism of viral pathogenesis and immune evasion.
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