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Current Cancer Drug Targets

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ISSN (Print): 1568-0096
ISSN (Online): 1873-5576

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Research Article

Dextran Sulfate Inhibits Cell Proliferation and Induces Apoptosis by Regulating EZH2 in Gastric Carcinoma

Author(s): Yunning Huang *, Wenjun Wang*, Yuan-Yi Xu*, Jiaxin Guo, Longxing Jiao, Honghong Wang, Mengqi Li and Qi Yang

Volume 21, Issue 11, 2021

Published on: 22 September, 2021

Page: [953 - 964] Pages: 12

DOI: 10.2174/1568009621666210922112039

Price: $65

Abstract

Background: Gastric cancer (GC) is one of the most common gastrointestinal malignancies. According to reports, the enhancer of zeste homolog 2 (EZH2) exhibits carcinogenic function in a variety of cancers. Therefore, EZH2 may be a potential therapeutic target for the treatment of human cancer. Macromolecular Dextran Sulfate (DS) has been displayed to play a critical role in tumor inhibition. However, the molecular mechanism by which DS mediates this effect is unclear.

Objectives: In this study, we explored the effects of DS on the proliferation and apoptosis of gastric cancer and the related mechanisms. Cell proliferation and counting assays, as well as cell colony formation assays, revealed that DS inhibited the proliferation and tumorigenesis of GC cells. Additionally, flow cytometry analysis displayed that DS blocked the cell cycle of GC cells in the G1/S phase and promoted their apoptosis.

Methods: Bioinformatics analyses, enzyme-linked immunosorbent assays, immunohistochemistry, and other methods were applied to measure the expression of EZH2 in human GC cells and tissues.

Results and Discussion: Further studies have shown that DS treatment can reduce the expression of proliferating cell nuclear antigen (PCNA) and increase the level of the ratio of Bax: Bcl-2 protein in GC cells. In addition, DS reduced EZH2 levels and increased CXXC finger protein 4 levels both in vitro and in vivo. In addition, down-regulation of EZH2 with EZH2 inhibitors reversed the inhibitory effect of DS on gastric cancer cells.

Conclusion: Collectively, our work demonstrates that DS suppresses proliferation and promotes apoptosis of GC cells by regulating EZH2. Our study suggests that DS is a promising therapeutic compound for the treatment of GC.

Keywords: Dextran sulfate, gastric cancer, EZH2, CXXC4, proliferation, apoptosis.

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