Journal
MBIO
Volume 7, Issue 1, Pages -Publisher
AMER SOC MICROBIOLOGY
DOI: 10.1128/mBio.01926-15
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- CICESE-CONACYT, Mexico
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The Epstein-Barr virus (EBV)-encoded noncoding RNAs EBER1 and EBER2 are highly abundant through all four latency stages of EBV infection (III-II-I-0) and have been associated with an oncogenic phenotype when expressed in cell lines cultured in vitro. In vivo, EBV-infected B cells derived from freshly isolated lymphocytes show that EBER1/2 deletion does not impair viral latency. Based on published quantitative proteomics data from BJAB cells expressing EBER1 and EBER2, we propose that the EBERs, through their activation of AKT in a B-cell-specific manner, are a functionally redundant backup of latent membrane protein 1 (LMP1)-an essential oncoprotein in EBV-associated malignancies, with a main role in AKT activation. Our proposed model may explain the lack of effect on viral latency establishment in EBER-minus EBV infection.
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