Thioridazine enhances lysosomal accumulation of epidermal growth factor and toxicity of conjugates of epidermal growth factor with Pseudomonas exotoxin.

Abstract

Thioridazine, a phenothiazine calmodulin inhibitor, aggravated the cytotoxic effect of a conjugate (EGF-PE) of epidermal growth factor (EGF) coupled with Pseudomonas exotoxin against cultured HeLa cells. Other phenothiazine calmodulin inhibitors, trifluoperazine and chlorpromazine, also intensified the cytotoxic effect of EGF-PE, whereas N-(6-aminohexyl)-5… (More)

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