Cytokinetic study on the effects of N4-behenoyl-1-beta-D-arabinofuranosylcytosine on murine leukemic cells L 1210: a comparison with the effects of 1-beta-D-arabinofuranosylcytosine.

Abstract:

:The effects of N4-behenoyl-1-beta-D-arabinofuranosylcytosine (BH-AC) on the cell cycle of murine leukemic cells (L 1210 cells) were compared with those of 1-beta-D-arabinofuranosylcytosine (ara-C), known to be effective for acute leukemia. In a cytokinetic study, a combination of Feulgen microcytofluorometry and tritiated thymidine autoradiography (3H-TdR ARG) was used to measure DNA content and to determine DNA synthesis simultaneously in a single cell. Administration of 200 mg/kg of BH-AC significantly prolonged the survival time of mice bearing L 1210. In addition, the cells in the G1 + S1 phases increased with time, accounting for 94.4 per cent of all cells measured at 48 h after the administration, compared to 73.7 per cent before administration. On the other hand, following the administration of 86 mg/kg of ara-C (equivalent to 200 mg/kg of BH-AC), the percentage of cells in the S1 + S2 phases increased maximally to 75.9 per cent at 18 h. Cytokinetic studies further showed that BH-AC administration blocks DNA synthesis of the cells in the S-phase for a longer period than does ara-C. These results suggest that the prolonged inhibition by BH-AC on DNA synthesis allows cells to accumulate in the S-phase to a greater degree.

journal_name

Hematol Oncol

journal_title

Hematological oncology

authors

Maruo N,Horiuchi H,Nakabo T,Kondo M,Nakamura T

doi

10.1002/hon.2900030106

subject

Has Abstract

pub_date

1985-01-01 00:00:00

pages

39-48

issue

1

eissn

0278-0232

issn

1099-1069

journal_volume

3

pub_type

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