EFFECTS OF LEPTOMYCIN-B ON THE CELL-CYCLE OF FIBROBLASTS AND FISSION YEAST-CELLS

被引:106
作者
YOSHIDA, M
NISHIKAWA, M
NISHI, K
ABE, K
HORINOUCHI, S
BEPPU, T
机构
[1] Department of Agricultural Chemistry, Faculty of Agriculture, The University of Tokyo, Bunkyo-ku, Tokyo
关键词
D O I
10.1016/0014-4827(90)90129-X
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
An antifungal antibiotic, leptomycin B (LMB), which induced cell elongation of fission yeast, Schizosaccharomyces pombe, was found to be a unique inhibitor of the cell cycle of mammalian and fission yeast cells. Proliferation of rat 3Y1 flbroblasts was reversibly blocked by LMB in both the G1 and G2 phases and the treated cells were presumably introduced into the resting state (G0). After removal of LMB, proliferative tetraploid cells were produced from the cells which had been arrested by LMB at the G2 phase, as a result of DNA replication without passage through the M phase. LMB also inhibited the proliferation of S. pombe in both the G1 and G2 phases. These results suggest that the molecular target of LMB is one of the components necessary for progression of both G1 and G2 in the eukaryotic cell cycle. © 1990.
引用
收藏
页码:150 / 156
页数:7
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