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J Virol. 1987 May; 61(5): 1552-1558

Human neonatal lymphocytes immortalized after microinjection of Epstein-Barr virus DNA.

ABSTRACT

Epstein-Barr virus (EBV) is a highly efficient acute transforming agent in human cells, provided that the intact virus is used. To investigate the ability of viral DNA alone to transform cells, we introduced the EBV genome into human lymphocytes. After microinjection of EBV DNA into neonatal B lymphocytes, we established a cell line that in early passages contained multiple viral fragments. This cell line retained sequences from the short, unique (Us) region of the EBV genome and sequences from EcoRI-E. The viral sequences were not expressed; however, the cells expressed a 2.3-kilobase polyadenylated message homologous to the c-fgr oncogene, a cellular locus believed to be activated by EBV infection [M. S. C. Cheah, T. J. Ley, S. R. Tronick, and K. C. Robbins, Nature (London) 319:238-240.]. The cell line was monoclonal with rearrangement at the immunoglobulin locus and had a reciprocal translocation t(1;7)(p34;q34) and a deletion of sequences within the locus for the beta chain of the T-cell receptor. The close proximity of the translocation to the chromosomal loci for c-fgr on chromosome 1 and the T-cell receptor beta chain on chromosome 7 suggests that structural alteration of these genes was critical to this transformation event.

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