ジピリダモールの多剤耐性克服作用に関する研究(第1報)ジピリダモールによるエピルビシンの細胞増殖, 細胞周期に対する作用の修飾

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タイトル別名
  • Studies on Reversing Effect of Multidrug Resistance by Dipyridamole. I. Modulation of Epirubicin-Induced Effects on Cell Proliferation and Cell Cycle by Dipyridamole
  • ジピリダモール ノ タザイ タイセイ コクフク サヨウ ニカンスルケンキュウ

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説明

Dipyridamole, a nucleoside membrane transport inhibitor, enhanced the cytotoxicity of epirubicin for mouse leukemia P388 cells by a factor of 1.8-fold and that for 30-fold doxorubicin-resistant sublines of P388 cells (P388/DOX) by a factor of 6.5-fold. This interaction was shown to be truly synergistic by DNA histogram and median effect analysis. The dipyridamole enhancement of the cytotoxicity of epirubicin was a dose-dependent effect ; it was greatest when cells were exposed to dipyridamole before treatment with epirubicin. In cell cycle experiments, 1-5μM dipyridamole increased the accumulation of G2+M phase produced by the treatment with 0.5-1μM epirubicin. Dipyridamole, however, did not appear to alter the patterns of DNA histogram in sensitive cells. These results suggest that the increase of the accumulation of G2+M phase in resistant cells is an important factor for the interaction between epirubicin and dipyridamole.

収録刊行物

  • 薬学雑誌

    薬学雑誌 116 (3), 217-227, 1996

    公益社団法人 日本薬学会

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