The activity of flavone acetic acid (NSC 347512) on human colon cancer cells in vitro |
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Authors: | B. Drewinko M.D. Ph.D. L. -Y. Yang |
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Affiliation: | (1) Division of Laboratory Medicine, University of Texas System Cancer Center, M.D. Anderson Hospital & Tumor Institute at Houston, 6723 Bertner Avenue, Box No. 73, 77030 Houston, TX, USA;(2) Section of Laboratory of Hematology, Division of Laboratory Medicine, The University of Texas, M.D. Anderson Hospital & Tumor Institute, 6723 Bertner Avenue, Box No. 73, 77030 Houston, TX, USA |
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Abstract: | Flavone acetic acid (FAA) was incubated for 1 to 48 hr with 3 established human colon cancer cell lines endowed with distinct degrees of phenotypic properties. All 3 lines responded to FAA in almost identical fashion; when incubated with the drug for only 1 hr, an initial decrease in survival was observed for concentrations of 250 g/ml but no further increments in cytotoxicity were elicited when the concentration of FAA was augmented. Increasing the length of treatment yielded relatively modest increments (about 1 log) in cell killing only after an interval of 48 hr and only at the highest concentration (1000 g/ml). Because of these relatively poor cytotoxic effects and because the therapeutic range of FAA is so narrow, we conclude that this agent will not be a valuable contribution to the antitumor arsenal, at least for colon cancer. |
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Keywords: | flavone acetic acid cytotoxicity colon cancer |
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