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Matsuo, Y. et al.

Matsuo, Drexler, Takeuchi, Tanaka, Orita,

Establishment of the T-cell large granular lymphocyte leukemia cell line MOTN-1 carrying natural killer-cell antigens.

A novel interleukin-2 (IL-2) dependent leukemia cell line MOTN-1 was established from the peripheral blood of a 63-year-old woman with T-cell large granular lymphocyte (LGL) leukemia in chronic phase. Primary peripheral blood leukemia cells were CD3+, CD5+, CD7+, CD56+, CD94+, CD161+, TcRalphabeta+, and HLA-DR+. The immunoprofile of the established cell line MOTN-1, however, showed CD3-, CD5-, CD7+, CD56+, CD94+, CD159+, CD161+, TcRalphabeta- and HLA-DR+; the MOTN-1 cells were cytoplasmatically positive for CD3varepsilon and the products of the T-cell receptor (TcR) genes beta and gamma. While the TcRbeta and TcRgamma genes were rearranged, the TcRdelta gene was found to be deleted. DNA fingerprinting and chromosome analysis identifying the t(2;6)(q?23;q?21) and t(12;18)(q13;q?22) alterations demonstrated the authenticity and the malignant nature of the cell line. The scientific significance of MOTN-1 lies in (1) the rarity of this type of leukemia cell lines, (2) the co-expression of various T- and natural killer (NK)-cell-associated markers, and (3) its unique chromosomal aberrations.[1]

References

Establishment of the T-cell large granular lymphocyte leukemia cell line MOTN-1 carrying natural killer-cell antigens. Matsuo, Y., Drexler, H.G., Takeuchi, M., Tanaka, M., Orita, K. Leuk. Res. (2002) [Pubmed]

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