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Anti-Cancer Agents in Medicinal Chemistry

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ISSN (Print): 1871-5206
ISSN (Online): 1875-5992

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Research Article

Wogonin Induces Cell Cycle Arrest and Apoptosis of Hepatocellular Carcinoma Cells by Activating Hippo Signaling

Author(s): Keyan Wu, Man Teng, Wei Zhou, Fanglin Lu, Yang Zhou, Jing Zeng, Jie Yang, Xinnong Liu, Yu Zhang, Yanbing Ding* and Weigan Shen*

Volume 22, Issue 8, 2022

Published on: 24 August, 2021

Page: [1551 - 1560] Pages: 10

DOI: 10.2174/1871520621666210824105915

Price: $65

Abstract

Background: Wogonin has been reported to exhibit pharmacological effects against cancer by regulating cell proliferation, metastasis and apoptosis, however, the role of wogonin in hepatocellular carcinoma (HCC) remains poorly elucidated.

Objective: The current study aimed to illustrate whether wogonin influences HCC cell cycle progression and apoptosis by regulating Hippo signaling.

Methods: The effects of wogonin on HCC cell viability, cell cycle progression and apoptosis were analyzed by utilizing CCK-8 and flow cytometry. RNA-seq was employed to analyze the expression profiles between wogonin-treated and control HCC cells, and the selected RNA-seq transcripts were validated by Reverse Transcription-quantitative realtime Polymerase Chain Reaction (RT-qPCR). Immunofluorescence staining was performed to detect the distribution of YAP/TAZ in the nucleus and cytoplasm in HCC cells. Western blotting and human apoptosis array were performed to examine the expression of the indicated genes.

Results: We demonstrated that wogonin induced cell cycle arrest and apoptosis of HCC cell lines SMMC7721 and HCCLM3. RNA-seq analysis showed enrichment in genes associated with cell cycle progression and apoptosis following incubation with wogonin in HCC cells, and the pathways analysis further identified that Hippo signaling pathways highly altered in wogonin-treated cells. Specifically, wogonin increased the phosphorylation of MOB1 and LATS1, promoted translocation of endogenous YAP and TAZ from the nucleus to the cytoplasm, and facilitated phosphorylation of YAP and TAZ. Notably, overexpression of YAP or TAZ partially abrogated the wogonin-mediated HCC cell cycle arrest and apoptosis, and reversed wogonin-mediated suppression of Claspin.

Conclusion: Wogonin induced HCC cell cycle arrest and apoptosis probably by activating MOB1-LATS1 signaling to inhibit the activation of YAP and TAZ, and then decrease the expression of Claspin, suggesting that the understanding of the molecular mechanisms underlying wogonin-induced cell cycle arrest and apoptosis may be useful in HCC therapeutics.

Keywords: Wogonin, apoptosis, Hippo pathway, Claspin, hepatocellular carcinoma, Cell Cycle.

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