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Establishment and characterization of a novel immature T-ALL cell line, UHKT-42, with TCR beta/delta expression

P Stockbauer, T Ariyasu, J Stary, V Holan, T Dao, J Minowada

. 1994 ; 7 (1) : 40-46.

Language English Country Japan

Document type Case Reports

Persistent link   https://www.medvik.cz/link/bmc13029115

Grant support
IZ760 MZ0 CEP Register

A novel immature human T-ALL cell line, UHKT-42, was established from a 12 year old male patient with acute undifferentiated leukemia. The cell line expressed surface CD7, CD5 and cytoplasmic CD3 antigens. All other T-lymphocytic antigens were undetectable on the surface or in the cytoplasm of cultured cells. Expression of the T-cell receptor (TCR) beta, TCR delta, CD3 delta and CD3 epsilon genes was detected by Northern blotting in total cellular RNA extracts, however, the expression of TCR alpha and TCR gamma was undetectable. After stimulation by TPA for 3 days, only the appearance of CD25 (Tac antigen) was detected by immunofluorescence and flow cytometry. Secretion of interleukin-2 (IL-2) into the culture media was also detected after stimulation by PHA or TPA, but not in unstimulated cells. These results suggest that UHKT-42 cells are early precursors of T cells, with TCR beta/delta expression.

Bibliography, etc.

Literatura

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$a A novel immature human T-ALL cell line, UHKT-42, was established from a 12 year old male patient with acute undifferentiated leukemia. The cell line expressed surface CD7, CD5 and cytoplasmic CD3 antigens. All other T-lymphocytic antigens were undetectable on the surface or in the cytoplasm of cultured cells. Expression of the T-cell receptor (TCR) beta, TCR delta, CD3 delta and CD3 epsilon genes was detected by Northern blotting in total cellular RNA extracts, however, the expression of TCR alpha and TCR gamma was undetectable. After stimulation by TPA for 3 days, only the appearance of CD25 (Tac antigen) was detected by immunofluorescence and flow cytometry. Secretion of interleukin-2 (IL-2) into the culture media was also detected after stimulation by PHA or TPA, but not in unstimulated cells. These results suggest that UHKT-42 cells are early precursors of T cells, with TCR beta/delta expression.
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