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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Expression of either the TCL1 oncogene, or transcripts from its homologue MTCP1/c6.1B, in leukaemic and non-leukaemic T cells from ataxia telangiectasia patients.

Patients with the recessively inherited disorder ataxia telangiectasia (A-T) have a high level of specific chromosome translocations which can be easily observed in peripheral T cells and show a greatly increased predisposition to leukaemia/lymphoma, mainly of T cell origin. Some translocation cells proliferate into a large clone and may develop into T cell prolymphocytic leukaemia (T-PLL). By the time of diagnosis of T-PLL, the clone contains many more genetic changes in the form of additional translocations. T-PLL is also seen in non-A-T individuals where expression of either TCL1 (at 14q32) or the c6.1B/MTCP1 A1 transcript (at-Xq28) has been demonstrated in just a few instances. We show here, that expression of TCL1 occurs in leukaemic T cells from A-T patients with chromosome 14 rearrangements. Expression of TCL1 also occurs in the preleukaemic clone cells of A-T patients containing the primary translocation alone. Some expression of TCL1 could also be detected in randomly selected A-T patients without large cytogenetic clones and without any evidence of leukaemic change. We also show that expression of the B1 transcript from a second gene, MTCP1, occurred at a relatively high level only in two T-PLL tumours from A-T patients with t(X;14) translocations whereas the MTCP1/A1 transcript is much more widely expressed in both tumour and non tumour cells of A-T and non-A-T individuals.[1]

References

  1. Expression of either the TCL1 oncogene, or transcripts from its homologue MTCP1/c6.1B, in leukaemic and non-leukaemic T cells from ataxia telangiectasia patients. Thick, J., Metcalfe, J.A., Mak, Y.F., Beatty, D., Minegishi, M., Dyer, M.J., Lucas, G., Taylor, A.M. Oncogene (1996) [Pubmed]
 
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