ArticlePLoS pathogens2024
Epstein-Barr virus protein EBNA-LP engages YY1 through leucine-rich motifs to promote naïve B cell transformation.
Article in PLoS pathogens, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Lamin A/C maintains genome topology and regulates transcriptional programs essential for virus-driven B cell activation.bioRxiv : the preprint server for biology · 2026Article
- Dissecting Epstein-Barr Virus Dependence Across Diverse Infected Cell Models.bioRxiv : the preprint server for biology · 2025Article
- Chromatin Control of EBV Infection and Latency.Current topics in microbiology and immunology · 2025Article
- EBV Latency Programs: Molecular and Epigenetic Regulation and Its Role in Disease Pathogenesis.Journal of medical virology · 2025Review
- Sp140L functions as a herpesvirus restriction factor suppressing viral transcription and activating interferon-stimulated genes.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
- EBNA leader protein orchestrates chromatin architecture remodeling during Epstein-Barr virus-induced B cell transformation.Nucleic acids research · 2025Article
- Multiple sclerosis and infection: history, EBV, and the search for mechanism.Microbiology and molecular biology reviews : MMBR · 2025Review
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Abstract
Epstein-Barr Virus (EBV) is associated with numerous cancers including B cell lymphomas. In vitro, EBV transforms primary B cells into immortalized Lymphoblastoid Cell Lines (LCLs) which serves as a model to study the role of viral proteins in EBV malignancies. EBV induced cellular transformation is driven by viral proteins including EBV-Nuclear Antigens (EBNAs). EBNA-LP is important for the transformation of naïve but not memory B cells. While EBNA-LP was thought to promote gene activation by EBNA2, EBNA-LP Knockout (LPKO) virus-infected cells express EBNA2-activated cellular genes efficiently. Therefore, a gap in knowledge exists as to what roles EBNA-LP plays in naïve B cell transformation. We developed a trans-complementation assay wherein transfection with wild-type EBNA-LP rescues the transformation of peripheral blood- and cord blood-derived naïve B cells by LPKO virus. Despite EBNA-LP phosphorylation sites being important in EBNA2 co-activation; neither phospho-mutant nor phospho-mimetic EBNA-LP was defective in rescuing naïve B cell outgrowth. However, we identified conserved leucine-rich motifs in EBNA-LP that were required for transformation of adult naïve and cord blood B cells. Because cellular PPAR-g coactivator (PGC) proteins use leucine-rich motifs to engage transcription factors including YY1, a key regulator of DNA looping and metabolism, we examined the role of EBNA-LP in engaging transcription factors. We found a significant overlap between EBNA-LP and YY1 in ChIP-Seq data. By Cut&Run, YY1 peaks unique to WT compared to LPKO LCLs occur at more highly expressed genes. Moreover, Cas9 knockout of YY1 in primary B cells prior to EBV infection indicated YY1 to be important for EBV-mediated transformation. We confirmed EBNA-LP and YY1 biochemical association in LCLs by endogenous co-immunoprecipitation and found that the EBNA-LP leucine-rich motifs were required for YY1 interaction in LCLs. We propose that EBNA-LP engages YY1 through conserved leucine-rich motifs to promote EBV transformation of naïve B cells.
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