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2000
Volume 25, Issue 14
  • ISSN: 1871-5206
  • E-ISSN: 1875-5992

Abstract

Objectives

Our study aimed to explore the effects of quercetin on glioma stem cells in patients with brain tumors.

Methods

Human glioblastoma cell line, U373MG, or glioma stem cell lines, were treated with quercetin. Cell viability was determined by using the cell counting kit 8 assays. Cell apoptosis was determined by using the Annexin-V reagent. Western blotting and qPCR were used to detect the protein and mRNA levels of cyclin-dependent kinase inhibitor 2A (p16INK4a). Chromatin immunoprecipitation analysis was used to determine the enrichment of H3K27me3 on the p16-INK4 locus with or without quercetin.

Results

Treatment with quercetin inhibited cell viability and induced cell apoptosis in U373MG cells. Moreover, treatment with quercetin inhibited the cell viability of four glioma stem cell lines (G3, G10, G15, and G17) from brain tumor samples at high concentrations while having no obvious effects for the other two glioma stem cell lines (G9 and G21). Treatment with quercetin increased the mRNA and protein levels of p16- INK4 in glioma stem cell lines. The study of the underlying mechanism revealed that treatment with quercetin reduced H3K27me3 (an epigenetic modification to the DNA packaging protein histone H3) levels at the p16-INK4 locus.

Conclusions

In conclusion, quercetin inhibits glioma cell growth by activating p16-INK4 gene expression through epigenetic regulation.

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2025-01-31
2025-09-04

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Quercetin Suppresses Glioma Stem Cells via Activating p16-INK4 Gene Expression through Epigenetic Regulation
Anti-Cancer Agents in Medicinal Chemistry (Formerly Current Medicinal Chemistry - Anti-Cancer Agents) 25, 1041 (2025); https://doi.org/10.2174/0118715206332048241126095207
/content/journals/acamc/10.2174/0118715206332048241126095207
/content/journals/acamc/10.2174/0118715206332048241126095207
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  • Article Type:     Research Article
Keyword(s): apoptosis; cell viability; epigenetic modification; glioma stem cells; p16-INK4; Quercetin

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