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Article Publish Status: FREE
Abstract Title:

Hydrangenol inhibits the proliferation, migration, and invasion of EJ bladder cancer cells via p21-mediated G1-phase cell cycle arrest, p38 MAPK activation, and reduction in Sp-1-induced MMP-9 expression.

Abstract Source:

EXCLI J. 2018 ;17:531-543. Epub 2018 Jun 6. PMID: 30034317

Abstract Author(s):

Seung-Shick Shin, Myeong-Cheol Ko, Yu-Jin Park, Byungdoo Hwang, Sung Lyea Park, Wun-Jae Kim, Sung-Kwon Moon

Article Affiliation:

Seung-Shick Shin

Abstract:

Hydrangenol is a dihydroisocoumarin that is mainly obtained from. Recently, hydrangenol has garnered attention since several studies have reported that it has anti-inflammatory, anti-allergic, anti-diabetic, and anti-malarial activities. However, there have been few studies on the effect of hydrangenol on oncogenesis. In this study, we evaluated the anti-cancer activity of hydrangenol against the EJ bladder cancer cell line. Hydrangenol significantly inhibited the proliferation of EJ cells in a dose-dependent manner with an ICof 100µM. Flow cytometry and immunoblotting experiments indicated that EJ cells were arrested in the G1-phase of the cell cycle and showed reduced expression of CDK2, CDK4, cyclin D1, and cyclin E mediated via the upregulation of p21. Hydrangenol increased the phosphorylation of p38 MAPK without affecting the phosphorylation of ERK and JNK. In addition, hydrangenol significantly inhibited the migratory and invasive activities of EJ cells by suppressing the enzymatic activity of MMP-9. Electrophoretic mobility shift assays suggested that the inhibition of MMP-9 activity by hydrangenol was attributable to its suppression of the Sp-1 transcription factor binding activity. This study is the first report on the mode of action of hydrangenol as an inhibitor of bladder cancer. We believe that these results provide novel insights that could aid the development of hydrangenol-based chemotherapeutic agents.

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