作者: K. Takatsuki , K. Shirono , T. Hattori , K. Yamaguchi , T. Kiyokawa
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摘要: The inhibitory effect of a diphtheria toxin-related interleukin 2 fusion protein, IL-2-toxin, on protein synthesis in adult T-cell leukemia/lymphoma (ATL) cells was examined vitro. Peripheral blood ATL from 12 patients (six acute type, four chronic and two smoldering type ATL) the lymph node three (two one lymphoma were examined. At concentration 10(-8) M, IL-2-toxin inhibited by 60 to 98% cells, whereas peripheral 20 57% 3 13% type. In contrast, had no measurable T-cells either with or normal controls. cytopathic effects blocked addition anti-CD25 monoclonal antibody, suggesting that inhibition target mediated IL-2 receptor (IL-2R). degree synthesis, however, not closely correlated expression CD25 antigen (low-affinity Mr 55,000 glycoprotein, IL-2R, Tac antigen) cells. There an apparent correlation between rate We demonstrate disease more sensitive than disease. These findings suggest high affinity IL-2R present may serve as for therapy this recombinant chimeric toxin.