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Cited by 254

The DOI matches its Crossref record; 42 of the 42 references it cites were found in a registry or an index.

Epstein–Barr virus latent membrane protein 1 trans-activates miR-155 transcription through the NF-κB pathway

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Gatto, Graziana, Rossi, Annalisa, Rossi, Daniela, Kroening, Sven, Bonatti, Stefano, Mallardo, Massimo·2008·Nucleic Acids Research

Abstract

The Epstein-Barr virus (EBV)-encoded latent membrane protein-1 (LMP1), a functional homologue of the tumor necrosis factor receptor family, substantially contributes to EBV's oncogenic potential by activating nuclear factor-kappaB (NF-kappaB). miR-155 is an oncogenic miRNA critical for B-cell maturation and immunoglobulin production in response to antigen. We report that miR-155 expression is much higher in EBV-immortalized B cells than in EBV-negative B cells. LMP1, but not LMP2, up-regulated the expression of miR-155, when transfected in EBV-negative B cells. We analyzed two putative NF-kappaB binding sites in the miR-155 promoter; both sites recruited NF-kappaB complex, in nuclear extract from EBV-immortalized cells. The exogenous expression of LMP1, in EBV-negative background, is temporally correlated to induction of p65 with binding on both NF-kappaB sites and with miR-155 overexpression. The induction of p65 binding together with increased RNA polymerase II binding, confirms that LMP1-mediated activation of miR-155 occurs transcriptionally. In reporter assays, miR-155 promoter lacking NF-kappaB binding sites was no longer activated by LMP1 expression and an intact AP1 site is needed to attain maximum activation. Finally, we demonstrate that LMP1-mediated activation of miR-155 in an EBV-negative background correlates with reduction of protein PU.1, which is a possible miR target.

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Metadata

Authors
Gatto, G., Rossi, A., Rossi, D., Kroening, S., Bonatti, S., & Mallardo, M.
Venue
Nucleic Acids Research
Published
2008-10-21
Volume
36
Issue
20
Pages
6608-6619
ISSN
  • 0305-1048 (ISSN-L)
  • 1362-4962
OpenAlex
W2017481656
Cited by
254
References
42
FWCI
9.70
Type
journal article
Language
en
Open access
gold

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CoChat. (2026). Citation check: Epstein–Barr virus latent membrane protein 1 trans-activates miR-155 transcription through the NF-κB pathway. https://app.cochat.ai/papers/10.1093/nar/gkn666
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Gatto, G., Rossi, A., Rossi, D., Kroening, S., Bonatti, S., & Mallardo, M. (2008). Epstein–Barr virus latent membrane protein 1 trans-activates miR-155 transcription through the NF-κB pathway. Nucleic Acids Research. https://doi.org/10.1093/nar/gkn666

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