Potentiation of antitumor activity of vincristine by the biscoclaurine alkaloid cepharanthine.

Abstract

A membrane stabilizer, the biscoclaurine alkaloid cepharanthine markedly enhanced the cytotoxicity of vincristine (VCR) and adriamycin in cultured L1210 cells at a noncytotoxic dose. When 0.1-0.5 micrograms cepharanthine/ml was added along with VCR to L1210 cells in vitro, the cytotoxicity of VCR was potentiated 1.5-fold to 7-fold, whereas such potentiation… (More)

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