Epstein-Barr virus microRNAs are evolutionarily conserved and differentially expressed

Xuezhong Cai, Alexandra Schäfer, Shihua Lu, John P. Bilello, Ronald C. Desrosiers, Rachel Edwards, Nancy Raab-Traub, Bryan R. Cullen

Research output: Contribution to journalArticle

422 Scopus citations

Abstract

The pathogenic lymphocryptovirus Epstein-Barr virus (EBV) is shown to express at least 17 distinct microRNAs (miRNAs) in latently infected cells. These are arranged in two clusters: 14 miRNAs are located in the introns of the viral BART gene while three are located adjacent to BHRF1. The BART miRNAs are expressed at high levels in latently infected epithelial cells and at lower, albeit detectable, levels in B cells. In contrast to the tissue-specific expression pattern of the BART miRNAs, the BHRF1 miRNAs are found at high levels in B cells undergoing stage III latency but are essentially undetectable in B cells or epithelial cells undergoing stage I or II latency. Induction of lytic EBV replication was found to enhance the expression of many, but not all, of these viral miRNAs. Rhesus lymphocryptovirus, which is separated from EBV by ≥13 million years of evolution, expresses at least 16 distinct miRNAs, seven of which are closely related to EBV miRNAs. Thus, lymphocryptovirus miRNAs are under positive selection and are likely to play important roles in the viral life cycle. Moreover, the differential regulation of EBV miRNA expression implies distinct roles during infection of different human tissues. Copyright:

Original languageEnglish (US)
Pages (from-to)236-247
Number of pages12
JournalPLoS pathogens
Volume2
Issue number3
DOIs
StatePublished - Mar 1 2006
Externally publishedYes

ASJC Scopus subject areas

  • Parasitology
  • Microbiology
  • Immunology
  • Molecular Biology
  • Genetics
  • Virology

Fingerprint Dive into the research topics of 'Epstein-Barr virus microRNAs are evolutionarily conserved and differentially expressed'. Together they form a unique fingerprint.

  • Cite this

    Cai, X., Schäfer, A., Lu, S., Bilello, J. P., Desrosiers, R. C., Edwards, R., Raab-Traub, N., & Cullen, B. R. (2006). Epstein-Barr virus microRNAs are evolutionarily conserved and differentially expressed. PLoS pathogens, 2(3), 236-247. https://doi.org/10.1371/journal.ppat.0020023