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Abstract Title:

Oligonol, a Low Molecular Weight Polyphenol, Enhances Apoptotic Cell Death in Ovarian Cancer Cells via Suppressing NF-κB Activation.

Abstract Source:

Nutr Cancer. 2019 ;71(1):141-148. Epub 2019 Jan 11. PMID: 30633587

Abstract Author(s):

Miseon Kim, Wook Ha Park, Seul Lee, Dong Hoon Suh, Kidong Kim, Jae Hong No, Yong Beom Kim

Article Affiliation:

Miseon Kim

Abstract:

BACKGROUND: Oligonol, a low molecular weight polyphenol derived from lychee fruit, not only has anti-inflammatory effects in various disease conditions but also has antitumor-promoting effects. We evaluate the nuclear factor-kappa B (NF-κB)-related anticancer effect of oligonol in ovarian cancer using SKOV-3 cells.

METHODS: Cell viability was examined after oligonol treatment using MTT assay and reactive oxygen species (ROS) production measurement. Subsequently, apoptotic cell death was visualized by the TdT-mediated dUTP nick-end labeling (TUNEL) method. The effect of oligonol on the NF-κB signaling pathway was evaluated using western blot analysis and luciferase activity measurement of p65, an NF-κB subunit.

RESULTS: Cell viability significantly decreased after oligonol treatment of 72 h. Apoptosis-related markers were highly expressed in oligonol-treated cells, and increased apoptosis after oligonol treatment was also confirmed using the TUNEL assay. Western blotting results showed the expression of NF-κB signaling pathway factors, p-ERK, TRAF2, and p-IκBα, increased following treatment with oligonol, whereas p65 and COX-2 expression decreased. Immunofluorescence imaging results showed p65 luciferase activity in the nucleus as well as a shift to cytoplasmic expression.

CONCLUSION: Oligonol treatment significantly enhances apoptotic cell death in SKOV-3 cells, with the suppression of NF-κB activation, which plays an essential role in this anticancer effect.

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Sayer Ji
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