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MC180295 Inhibited Epstein-Barr Virus-Associated Gastric Carcinoma Cell Growth by Suppressing DNA Repair and the Cell

Tomohiro Fujii1, Jun Nishikawa1, Soichiro Fukuda1

  • 1Faculty of Laboratory Science, Yamaguchi University Graduate School of Medicine, Ube 755-8505, Japan.

International Journal of Molecular Sciences
|September 23, 2022
PubMed

Insights

MC180295, a demethylating agent, effectively inhibits Epstein-Barr virus-associated gastric carcinoma (EBVaGC) cell growth. It suppresses DNA repair and cell cycle progression, offering a promising epigenetic treatment strategy for EBVaGC.

Area of Science:

  • Oncology
  • Epigenetics
  • Virology

Background:

  • Epstein-Barr virus-associated gastric carcinoma (EBVaGC) development involves DNA methylation of viral and host DNA.
  • Epigenetic therapy using demethylating agents presents a promising treatment avenue for EBVaGC.

Purpose of the Study:

  • To investigate the demethylating agent MC180295's efficacy against EBVaGC.
  • To elucidate the molecular mechanisms underlying MC180295's anti-cancer effects in EBVaGC.

Main Methods:

  • Screening for demethylating agents to identify MC180295.
  • Assessing MC180295's impact on EBVaGC cell lines (YCCEL1, SNU719) and EBV-infected MKN28 cells.
  • Conducting cell cycle analysis and gene expression analysis (Serial Analysis of Gene Expression, quantitative PCR).

Main Results:

  • MC180295 demonstrated dose-dependent inhibition of EBVaGC cell growth, inducing cell cycle arrest and apoptosis.
  • MC180295 significantly reduced the expression of genes involved in DNA repair and cell cycle control (e.g., BRCA1, BRCA2, RAD51, TOP2A, CDC45).
  • MC180295 upregulated the expression of EBV genes LMP1 and BZLF1.

Conclusions:

  • MC180295 effectively inhibits EBVaGC cell proliferation by targeting DNA repair and cell cycle pathways.
  • MC180295 shows potential as an epigenetic therapeutic agent for EBVaGC.
Keywords:
DNA methylationEpstein–Barr virusMC180295demethylating agentgastric cancer

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