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자료유형
학술저널
저자정보
Yu, Seon-Mi (Department of Biological Sciences, Kongju National University) Kim, Song-Ja (Department of Biological Sciences, Kongju National University)
저널정보
한국통합생물학회 Animal cells and systems Animal cells and systems 제16권 제4호
발행연도
2012.1
수록면
274 - 279 (6page)

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Thymoquinone (TQ), a drug extracted from the black seeds of Nigella sativa, has been shown to exhibit anti-inflammatory, anti-oxidant, and anti-neoplastic effects in numerous cancer cells. The effects of TQ on cyclooxygenase-2 (COX-2) expression and prostaglandin $E_2$ ($PGE_2$) production in MDA-MB-231, however, remain poorly understood. Western blot analysis and immunofluorescence staining were performed to study the expression levels of inflammation regulatory proteins in MDA-MB-231. $PGE_2$ assay was conducted to explore the TQ-induced production of $PGE_2$. In this study, we investigated the effects of TQ on COX-2 expression and $PGE_2$ production in MDA-MB-231. TQ significantly induced COX-2 expression and increased $PGE_2$ production in a dose-dependent manner, as determined by a Western blot analysis and $PGE_2$ assay. Furthermore, the activation of Akt and p38 kinase, respectively, was up-regulated in TQ treated cells. Inhibition of p38 kinase with SB203580 and PI3kinase (PI3K) with LY294002 abolished TQ-caused COX-2 expression and decreased $PGE_2$ production. These results collectively demonstrate that TQ effectively modulates COX-2 expression and $PGE_2$ production via PI3K and p38 kinase pathways in the human breast cancer cell line MDA-MB-231.

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