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논문 기본 정보

자료유형
학술저널
저자정보
Winnicka, Katarzyna (Department of Pharmaceutical Technology, Faculty of Pharmacy, Medical University in Bialystok) Bielawski, Krzysztof (Department of Medicinal Chemistry and Drug Technology, Faculty of Pharmacy, Medical University in Bialystok) Bielawska, Anna (Department of Medicinal Chemistry and Drug Technology, Faculty of Pharmacy, Medical University in Bialystok) Miltyk, Wojciech (Department of Medicinal Chemistry and Drug Technology, Faculty of Pharmacy, Medical University in Bialystok)
저널정보
대한약학회 Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea 제30권 제10호
발행연도
2007.1
수록면
1,216 - 1,224 (9page)

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We examined the effects of three cardiac glycosides, ouabain, digoxin and proscillaridin A, on the proliferation of estrogen independent MDA-MB-231 breast cancer cells. In terms of reduction in cell viability, the compounds rank for both 24 hand 48 h of incubation in MDA-MB-231 cells in the order proscillaridin A > digoxin > ouabain. Digoxin for 24 hand 48 h of incubation in MDA-MB-231 cells proved to be only slightly more potent than ouabain, with $IC_{50}$ values of $122{\pm}2\;and\;70{\pm}2nM$, respectively, compared to $150{\pm}2\;and\;90{\pm}2nM$ for ouabain. In contrast, proscillaridin A, was much more active and showed a high level of cytotoxic potency, $IC_{50}\;51{\pm}2\;and\;15{\pm}2nM$ for 24 hand 48 h of incubation, respectively. The concentrations of digoxin, ouabain and proscillaridin A needed to inhibit [$^3H$]thymidine incorporation into DNA by 50% ($IC_{50}$) in MDA-MB-231 cells for 24 h of incubation were found to be $124{\pm}2nM,\;142{\pm}2nM,\;and\;48{\pm}2nM$, respectively. In the present study, we demonstrated that ouabain, digoxin, and proscillaridin A induce apoptosis in MDA-MB-231 cells by increasing free calcium concentration and by activating caspase-3.

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