Abstract
Epstein-Barr virus (EBV) is a human gamma herpes virus that infects B cells and induces their transformation into immortalized lymphoblasts that can grow as cell lines (LCLs) in vitro. EBNA-3 is a member of the EBNA-3-protein family that can regulate transcription of cellular and viral genes. The identification of EBNA-3 cellular partners and a study of its influence on cellular pathways are important for understanding the transforming action of the virus. In this work, we have identified the vitamin D receptor (VDR) protein as a binding partner of EBNA-3. We found that EBNA3 blocks the activation of VDR-dependent genes and protects LCLs against vitamin-D3-induced growth arrest and/or apoptosis. The presented data shed some light on the anti-apoptotic EBV program and the role of the EBNA-3-VDR interaction in the viral strategy.
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This work was supported by the Swedish Cancer Society, a matching grant from the Concern Foundation (Los Angeles), the Cancer Research Institute (New York), the Swedish Institute, and the Swedish Foundation for Strategic Research.
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Yenamandra, S.P., Hellman, U., Kempkes, B. et al. Epstein-Barr virus encoded EBNA-3 binds to vitamin D receptor and blocks activation of its target genes. Cell. Mol. Life Sci. 67, 4249–4256 (2010). https://doi.org/10.1007/s00018-010-0441-4
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DOI: https://doi.org/10.1007/s00018-010-0441-4