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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 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 제31권 제12호
- 발행연도
- 2008.1
- 수록면
- 1,604 - 1,612 (9page)
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초록· 키워드
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Although isothiocyanates have been shown to inhibit carcinogen-induced tumorigenesis, no studies have been made to determine their therapeutic potential for the treatment of breast cancer. In the present study, we evaluated the apoptotic activities of phenethyl isothiocyanate (PEITC) in human breast cancer MCF-7 cells. Exposure to PEITC potently reduced cell viability. In addition, DNA fragments and TUNEL positive nuclei were detected in PEITC-treated cells. Furthermore, PEITC induced apoptosis via activation of caspases 7 and 9 and the cleavage of PARP, and these effects were reversed by treatment with the caspase inhibitor, Z-VAD-fmk. PEITC also caused a decrease in the levels of Bcl-2 with a concomitant increase in Bax levels, which resulted in the release of cytochrome c. XIAP suppression and Smac translocation also contributed to the PEITC-induced apoptosis. However, PEITC did not increase the expressions of p53 and p21. Taken together, the results of this study demonstrate that PEITC significantly induces apoptosis via a mitochondrial pathway. Specifically, PEITC induced a change in the Bax/Bcl-2 ratios, XIAP levels and Smac translocation that was conjunction with the release of cytochrome c and following caspase activation. Therefore, PEITC has the potential for use as a therapeutic agent for the treatment of breast cancer.
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