Document Detail

Features distinguishing Epstein-Barr virus infections of epithelial cells and B cells: viral genome expression, genome maintenance, and genome amplification.
MedLine Citation:
PMID:  19439479     Owner:  NLM     Status:  MEDLINE    
Epstein-Barr virus (EBV) is associated with malignant diseases of lymphoid and epithelial cell origin. The tropism of EBV is due to B-cell-restricted expression of CD21, the major receptor molecule for the virus. However, efficient infection of CD21- epithelial cells can be achieved via transfer from EBV-coated B cells. We compare and contrast here the early events following in vitro infection of primary B cells and epithelial cells. Using sensitive, quantitative reverse transcription-PCR assays for several latent and lytic transcripts and two-color immunofluorescence staining to analyze expression at the single cell level, we confirmed and extended previous reports indicating that the two cell types support different patterns of transcription. Furthermore, whereas infection of B cells with one or two copies of EBV resulted in rapid amplification of the viral genome to >20 copies per cell, such amplification was not normally observed after infection of primary epithelial cells or undifferentiated epithelial lines. In epithelial cells, EBNA1 expression was detected in only ca. 40% of EBER+ cells, and the EBV genome was subsequently lost during prolonged culture. One exception was that infection of AGS, a gastric carcinoma line, resulted in maintenance of EBNA1 expression and amplification of the EBV episome. In contrast to B cells, where amplification of the EBV episome occurred even with a replication-defective BZLF1-knockout virus, amplification in AGS cells was dependent upon early lytic cycle gene expression. These data highlight the influence of the host cell on the outcome of EBV infection with regard to genome expression, amplification, and maintenance.
Claire Shannon-Lowe; Emily Adland; Andrew I Bell; Henri-Jacques Delecluse; Alan B Rickinson; Martin Rowe
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't     Date:  2009-05-13
Journal Detail:
Title:  Journal of virology     Volume:  83     ISSN:  1098-5514     ISO Abbreviation:  J. Virol.     Publication Date:  2009 Aug 
Date Detail:
Created Date:  2009-07-08     Completed Date:  2009-08-20     Revised Date:  2010-09-27    
Medline Journal Info:
Nlm Unique ID:  0113724     Medline TA:  J Virol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  7749-60     Citation Subset:  IM    
CR-UK Institute for Cancer Studies, The University of Birmingham, Vincent Drive, Birmingham B15 2TT, United Kingdom.
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MeSH Terms
B-Lymphocytes / virology*
Cell Line
Cells, Cultured
Epithelial Cells / virology*
Epstein-Barr Virus Infections / virology*
Gene Amplification
Gene Expression Regulation, Viral*
Genome, Viral*
Herpesvirus 4, Human / genetics,  physiology*
Virus Internalization
Virus Replication
Grant Support
//Cancer Research UK

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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