학술논문
Role of Caveolin-1 in Indomethacin-induced Death of Human Hepatoadenocarcinoma SK-Hep1 Cells
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- 영문명
- Role of Caveolin-1 in Indomethacin-induced Death of Human Hepatoadenocarcinoma SK-Hep1 Cells
- 발행기관
- 대한생리학회-대한약리학회
- 저자명
- Kyung-Nam Kim Ju-Hee Kang Sung-Vin Yim Chang-Shin Park
- 간행물 정보
- 『The Korean Journal of Physiology & Pharmacology』제12권 제4호, 143~148쪽, 전체 6쪽
- 주제분류
- 의약학 > 의학일반
- 파일형태
- 발행일자
- 2008.01.01
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국문 초록
영문 초록
Caveolin-1 (CAV1) is an integral membrane protein that may function as a scaffold for plasma membrane proteins and acts as a tumor suppressor protein. One causative factor of chemotherapy- resistant cancers is P-plycoprotein (P-gp), the product of the multidrug resistance-1 gene (MDR1), which is localized in the caveolar structure. Currently, the interactive roles of CAV1 and MDR1 expression in the death of cancer cells remain controversial. In this study, we investigated the effects of indomethacin on the cell viability and the expression levels of MDR1 mRNA and protein in a CAV1- siRNA-mediated gene knockdown hepatoma cell line (SK-Hep1). Cell viability was significantly decreased in CAV1-siRNA-transfected cells compared with that of control-siRNA-transfected cells. Furthermore, the viability of cells pretreated with CAV1 siRNA was markedly decreased by treatment with indomethacin (400ՌM for 24 h). However, the protein and mRNA levels of MDR1 were unchanged in CAV1-siRNA-transfected cells. These results suggest that CAV1 plays an important role as a major survival enzyme in cancer cells, and indomethacin can sensitively induce cell death under conditions of reduced CAV1 expression, independent of MDR1 expression.
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