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Tognon, M. et al.

Large T antigen coding sequences of two DNA tumor viruses, BK and SV40, and nonrandom chromosome changes in two glioblastoma cell lines.

The T antigen ( TAg) coding sequences of two DNA tumor viruses, BKV and SV40, were detected by Polymerase Chain Reaction (PCR) amplification followed by Southern-blot hybridization in two human glioblastoma multiforme derived cell lines. RT-PCR analysis indicated that these two TAg coding sequences were expressed in both tumor cell lines carrying the viral early region DNAs. Moreover, analytical polyacrylamide gel electrophoresis (PAGE) and DNA sequence analyses showed that the amplified PCR products are indistinguishable from the TAg coding sequences of BKV and SV40 wildtype strains. Cytogenetic study performed in the two cell lines showed unbalanced changes, mainly gains of chromosomes 3p, 5, 6, 7, and 19 and losses of chromosomes 3, 3q, 16, 9p22-->pter, 18, and 20. Excess of chromosomes 6 and 7 are common to the two cell lines. The putative role of the TAg of the two DNA tumor viruses in transformation and karyotype changes is discussed.[1]

References

Large T antigen coding sequences of two DNA tumor viruses, BK and SV40, and nonrandom chromosome changes in two glioblastoma cell lines. Tognon, M., Casalone, R., Martini, F., De Mattei, M., Granata, P., Minelli, E., Arcuri, C., Collini, P., Bocchini, V. Cancer Genet. Cytogenet. (1996) [Pubmed]

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