Abstract
The tumor promoter 12-O-tetradecanoyl phorbol-13-acetate is a potent inhibitor of mitochondrial respiration in both normal and methylcholanthrene-transformed C3H 10T1 2 mouse fibroblasts. This inhibition is seen at concentrations of tumor promoter in the range of 10 −8M, occurs within a few minutes after exposure of the intact cells, and is not seen with a biologically inactive analog. The effect appears to be exerted through inhibition of the function of an oligomycin-sensitive ATPase. It is possible, therefore, that alterations in mitochondrial function are associated with the process of tumor promotion.
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More From: Biochemical and Biophysical Research Communications
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