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논문 기본 정보

자료유형
학술저널
저자정보
Jendzelovsky, Rastislav (Institute of Biology and Ecology, Faculty of Science, P.J. Safarik University in Kosice) Mikes, Jaromir (Institute of Biology and Ecology, Faculty of Science, P.J. Safarik University in Kosice) Koval, Jan (Institute of Biology and Ecology, Faculty of Science, P.J. Safarik University in Kosice) Soucek, Karel (Department of Cytokinetics, Institute of Biophysics AS CR, Academy of Sciences of the Czech Republic) Prochazkova, Jirina (Department of Cytokinetics, Institute of Biophysics AS CR, Academy of Sciences of the Czech Republic) Kello, Martin (Institute of Biology and Ecology, Faculty of Science, P.J. Safarik University in Kosice) Sackova, Veronika (Institute of Biology and Ecology, Faculty of Science, P.J. Safarik University in Kosice) Hofmanova, Jirina (Department of Cytokinetics, Institute of Biophysics AS CR, Academy of Sciences of the Czech Republic) Kozubik, Alois (Department of Cytokinetics, Institute of Biophysics AS CR, Academy of Sciences of the Czech Republic) Fedorocko, Peter (Institute of Biology and Ecology, Faculty of Science, P.J. Safarik University in Kosice)
저널정보
한국광과학회 Photochemical & photobiological sciences : an international journal Photochemical & photobiological sciences : an international journal 제8권 제12호
발행연도
2009.1
수록면
1,716 - 1,723 (8page)

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Photodynamic therapy (PDT) is a flexible multi-target therapeutic approach. One of the main requirements of successful PDT is sufficient intracellular concentration of an applicable photosensitizer. Mechanisms of anticancer drug elimination by tumour cells are mostly linked to the elevated expression and activity of P-glycoprotein (P-gp), multidrug resistance-associated protein 1 (MRP1), breast cancer resistance protein (BCRP) and P450 monooxygenases. The interaction of hypericin with this cell drug-defence system is still unclear. We report here for the first time increased activity of MRP1 and BCRP in HT-29 colon cancer cells treated with hypericin per se. On the contrary, pre-treatment with proadifen (SKF525A) affected the function of MRP1 and BCRP leading to increased hypericin content, which might indicate a possible link between proadifen and these ABC transporter proteins. Subsequent enhanced intracellular oxidative stress was accompanied by loss of mitochondrial membrane potential, activation of caspase-9 and -3, PARP cleavage and onset of apoptosis. In conclusion, our study suggests that drug efflux transporters MRP1 and BCRP affect the pharmacokinetics of hypericin in HT-29 colon adenocarcinoma cells, and the action of hypericin-mediated PDT (HY-PDT) should be modulated by pre-treatment with their specific inhibitors.

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