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1887

Journal of General Virology header logo Journal of General Virology

Volume 87, Issue 11

The CR4 region of EBNA2 confers viability of Epstein–Barr virus-transformed B cells by CBF1-independent signalling No Access

Abstract

The Epstein–Barr virus (EBV) nuclear antigen 2 (EBNA2) gene product is the key regulator of the latent genes of EBV and essential for EBV-mediated transformation of human primary B cells. Viral mutants were constructed carrying a deletion of the EBNA2 conserved region 4 (CR4). Primary resting B cells infected with the ΔCR4-EBNA2 mutant virus were dramatically impaired for B cell transformation. Lymphoblastoid cell lines (LCLs) established with this mutant EBV revealed a prolonged population doubling time when cells were cultivated at low cell densities, which are not critical for wild-type-infected cells. Low-level spontaneous cell death occurred when the cells were cultivated at suboptimal cell densities. The phenotype of B cells and LCLs infected with the ΔCR4-EBNA2 mutant virus indicated that the CR4 region of EBNA2 specifically contributes to the viability of the cells rather than affecting cell division rates.

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2006-11-01
2026-01-24

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The CR4 region of EBNA2 confers viability of Epstein–Barr virus-transformed B cells by CBF1-independent signalling
J. Gen. Virol. 87, 3169 (2006); https://doi.org/10.1099/vir.0.82105-0
/content/journal/jgv/10.1099/vir.0.82105-0
/content/journal/jgv/10.1099/vir.0.82105-0
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