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Maintenance and Characterization of an Epstein Barr Virus-infected CD56-negative T Cell Lymphoma

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Specialty Oncology
Date 2002 Jan 23
PMID 11802809
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Abstract

T cell lymphoma carrying Epstein Barr virus (EBV(+) TL) is very rare among Western countries while it is much more common among Japanese. Here we report an EBV(+) TL which has been maintained for years by the use of mice with severe combined immune deficiency (SCID) mice. Lymphoma was obtained from a 55-year-old male suffering from oculomotor nerve palsy and lymphadenopathy. A small piece of biopsied tumor was transplanted into SCID mice and the lymphoma has been maintained for over 3 years with passages every 2 - 3 weeks. The maintained lymphoma, termed as TMS24, and the original lymphoma cells showed identical phenotype and genotype, including diffuse medium-sized cell morphology lacking granules, suppressor / cytotoxic immunophenotype and identical T cell receptor beta-chain gene rearrangement mode. Further, both were shown to carry an identical EBV clone in terms of the number of terminal repeats and the latency II-type restricted gene expression profile. Cytogenetically, TMS24 retained two characteristic chromosomal translocations of t(1;18)(q32;q21) and t(6;12)(p21;q24). Since only one cell line with such characters has been reported previously, TMS24 should be useful for detailed analysis of EBV(+) TL.

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