Cellular quantitation of in vivo effects of 1-beta-D-arabinofuranosylcytosine on leukemia L1210.
We derived a cellular model for the use of the cytidine analogue 1-beta-D-arabinofuranosylcytosine (ara-C) against L1210 leukemia in vivo from dose- and time-survival studies. We employed a quantitative assay for leukemia colony-forming cells to construct dose- and time-survival curves for single, divided, and infused doses of ara-C. Time-survival curves for a large dose range of ara-C indicated not only cell killing but also progression delay effects in vivo. Divided dose studies showed the extent of cell killing (optimum effect) to be dependent upon both the dose and the interval of time between administration of the drugs. When the drug was given as an infusion, the extent of cell killing was as great as that produced by the best fractionation schedule, an effect which was verified in terms of therapeutic efficacy in leukemic mice.[1]References
- Cellular quantitation of in vivo effects of 1-beta-D-arabinofuranosylcytosine on leukemia L1210. Edelstein, M., Valeriote, F., Vietti, T. J. Natl. Cancer Inst. (1977) [Pubmed]
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