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The Therapeutic Role of PNU-74654 in Hepatocellular Carcinoma May Involve Suppression of NF-κB Signaling
Min-You Wu1, Chi-Chih Wang1,2, Ya-Chuan Chang1
1School of Medicine, Chung Shan Medical University, Taichung 402, Taiwan.
Abstract:
Background and Objectives: PNU-74654, a Wnt/β-catenin inhibitor, has reported antitumor activities; however, the therapeutic potential of PNU-74654 in hepatocellular carcinoma (HCC) has not been investigated in detail. The aim of this study was to clarify the cytotoxic effects of PNU-74654 against HCC and to uncover its molecular mechanism. Materials and Methods: HepG2 and Huh7 liver cancer cell lines were selected to determine the antitumor properties of PNU-74654. Survival of the liver cancer cells in response to PNU-74654 was assessed by cell viability assays, and the apoptosis effect of PNU-74654 was analyzed by flow cytometry and visualized by Hoechst staining. An oncology array was used to explore the underlying molecular routes of PNU-74654 action in the cells. The migration properties were examined with a wound healing assay, and western blotting was conducted to evaluate protein expression. Results: Treatment with PNU-74654 decreased cell viability and inhibited cell migration. The cell cycle analysis and Hoechst staining revealed an increase in the population of cells at the sub-G1 stage and apoptotic morphological changes in the nucleus. The oncology array identified 84 oncology-related proteins and a suppressed expression of Bcl-xL and survivin. Western blotting showed that PNU-74654 could interfere with cell cycle-related proteins through the NF-κB pathway. Conclusions: PNU-74654 shows antiproliferative and antimigration effects against HepG2 and Huh7 cells, and its antitumor activity may be attributable to its interference in cell cycle regulation and the NF-κB pathway.
Insights
PNU-74654, a Wnt/β-catenin inhibitor, demonstrates antitumor effects by reducing hepatocellular carcinoma cell viability and migration. Its mechanism involves inducing apoptosis and interfering with cell cycle regulation via the NF-κB pathway.
Area of Science:
- Oncology
- Molecular Biology
- Pharmacology
Background:
- Hepatocellular carcinoma (HCC) remains a significant global health challenge.
- PNU-74654, a Wnt/β-catenin inhibitor, has shown prior antitumor activities.
- The therapeutic potential of PNU-74654 in HCC requires detailed investigation.
Purpose of the Study:
- To evaluate the cytotoxic effects of PNU-74654 on HCC cell lines.
- To elucidate the molecular mechanisms underlying PNU-74654's action in HCC.
Main Methods:
- Utilized HepG2 and Huh7 liver cancer cell lines.
- Assessed cell viability, apoptosis (flow cytometry, Hoechst staining), and migration (wound healing assay).
- Employed oncology arrays and western blotting to explore molecular pathways and protein expression.
Main Results:
- PNU-74654 significantly decreased cell viability and inhibited cell migration.
- Induction of apoptosis was observed, evidenced by an increased sub-G1 cell population and nuclear morphological changes.
- Oncology array identified suppressed Bcl-xL and survivin expression; western blotting confirmed interference with cell cycle proteins via the NF-κB pathway.
Conclusions:
- PNU-74654 exhibits antiproliferative and antimigration properties against HCC cells.
- Antitumor activity is linked to cell cycle dysregulation and modulation of the NF-κB signaling pathway.
- PNU-74654 presents a potential therapeutic agent for hepatocellular carcinoma.
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