Effects of calmodulin antagonists on human ovarian cancer cell proliferation in vitro.
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Examined were effects of calmodulin antagonists (W-5 and W-7) on proliferation of two kinds of human cell lines, designated HR and KF, derived from serous cystadecarcinoma of the ovary. Although both W-5 and W-7 inhibited their cell proliferation in vitro, the degree of inhibition was more marked with W-5 rather than with W-7. HR cells had higher sensitivity to cisplatinum than KF cells, while KF cells had higher sensitivity to adriamycin. Combinations of calmodulin antagonists and anti-cancer drugs resulted in adjuvant effects with regard to the inhibition of their cell proliferation in vitro.