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MG Goodman, SB Wormsley, JC Spinosa and LD Piro
Department of Immunology, Scripps Research Institute, La Jolla, CA.
Leukemic B cells from a majority of patients with chronic lymphocytic
leukemia (CLL) enter the cell cycle upon stimulation in vitro with
loxoribine, a potent 7,8-disubstituted guanine ribonucleoside
immunostimulant. In the absence of added costimulants, a proportion of
these cells become activated and undergo DNA synthesis and mitosis
accompanied by a marked increase in expression of an array of cell surface
activation antigens. The resultant activated B-CLL cells exhibit greatly
enhanced sensitivity to cycle-active cytotoxic drugs. This approach may be
of potential value in the therapy of CLL.
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| Copyright © 1994 by American Society of Hematology Online ISSN: 1528-0020 | |||||||||