Virus-encoded microRNAs: an overview and a look to the future
Language: 
English
Short Title: 
Virus-encoded microRNAs
Abstract: 

MicroRNAs (miRNAs) are small RNAs that play important roles in the regulation of gene expression. First described as posttranscriptional gene regulators in eukaryotic hosts, virus-encoded miRNAs were later uncovered. It is now apparent that diverse virus families, most with DNA genomes, but at least some with RNA genomes, encode miRNAs. While deciphering the functions of viral miRNAs has lagged behind their discovery, recent functional studies are bringing into focus these roles. Some of the best characterized viral miRNA functions include subtle roles in prolonging the longevity of infected cells, evading the immune response, and regulating the switch to lytic infection. Notably, all of these functions are particularly important during persistent infections. Furthermore, an emerging view of viral miRNAs suggests two distinct groups exist. In the first group, viral miRNAs mimic host miRNAs and take advantage of conserved networks of host miRNA target sites. In the larger second group, viral miRNAs do not share common target sites conserved for host miRNAs, and it remains unclear what fraction of these targeted transcripts are beneficial to the virus. Recent insights from multiple virus families have revealed new ways of interacting with the host miRNA machinery including noncanonical miRNA biogenesis and new mechanisms of posttranscriptional cis gene regulation. Exciting challenges await the field, including determining the most relevant miRNA targets and parlaying our current understanding of viral miRNAs into new therapeutic strategies. To accomplish these goals and to better grasp miRNA function, new in vivo models that recapitulate persistent infections associated with viral pathogens are required.

Author(s): 
Kincaid, Rodney P.
Sullivan, Christopher S.
Item Type: 
Journal Article
Publication Title: 
PLoS pathogens
Journal Abbreviation: 
PLoS Pathog.
Publication Date: 
2012-12
Publication Year: 
2012
Pages: 
e1003018
Volume: 
8
Issue: 
12
ISSN: 
1553-7374
DOI: 
10.1371/journal.ppat.1003018
Library Catalog: 
NCBI Published Medical (?)
Extra: 
PMID: 23308061 PMCID: PMC3534370

Turabian/Chicago Citation

Rodney P. Kincaid and Christopher S. Sullivan. 2012-12. "Virus-encoded microRNAs: an overview and a look to the future." PLoS pathogens 8: 12: e1003018. 10.1371/journal.ppat.1003018.

Wikipedia Citation

<ref> {{Cite journal | doi = 10.1371/journal.ppat.1003018 | issn = 1553-7374 | volume = 8 | pages = e1003018 | last = Kincaid | first = Rodney P. | coauthors = Sullivan, Christopher S. | title = Virus-encoded microRNAs: an overview and a look to the future | journal = PLoS pathogens | date = 2012-12 | pmid = | pmc = }} </ref>