MTH1 Inhibitor TH287 Suppresses Gastric Cancer Development Through the Regulation of PI3K/AKT Signaling

Dankai Zhan1, Xinxin Zhang1, Jiahui Li2

  • 1Department of Surgical Oncology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, China.

Insights

The MTH1 inhibitor TH287 shows promise as an anticancer agent for gastric cancer. It effectively reduces tumor cell viability, migration, and proliferation by impacting mitochondrial function and PI3K/AKT signaling.

Area of Science:

  • Biochemistry
  • Molecular Biology
  • Oncology

Background:

  • MutT homologue-1 (MTH1) is crucial for cancer cell survival by mitigating oxidative stress and maintaining genome integrity.
  • MTH1 inhibitors are emerging as potential anticancer therapeutics, but their precise mechanisms require further elucidation.
  • Gastric cancer (GCa) remains a significant health concern, necessitating novel therapeutic strategies.

Purpose of the Study:

  • To investigate the anticancer effects of the MTH1 inhibitor TH287 on gastric cancer cells.
  • To characterize the underlying mechanisms of TH287's action, focusing on cell viability, migration, apoptosis, cell cycle, and signaling pathways.

Main Methods:

  • Gastric cancer cell lines (BGC-823, SGC-7901) were treated with TH287.
  • Assays included CCK-8 for viability, colony-forming for proliferation, Transwell and scratch assays for migration, and flow cytometry for apoptosis and cell cycle analysis.
  • Mitochondrial membrane potential (JC-1 staining) and protein expression (Western blotting for PI3K/AKT pathway) were assessed.

Main Results:

  • TH287 significantly inhibited gastric cancer cell viability, proliferation, and migration.
  • The compound induced apoptosis and G2/M cell cycle arrest.
  • TH287 treatment led to loss of mitochondrial membrane potential and altered Bcl-2/Bax expression.
  • These effects were linked to the inhibition of the pro-oncogenic PI3K/AKT signaling pathway.

Conclusions:

  • TH287 exhibits potent anticancer effects against gastric cancer cells.
  • The drug's efficacy is mediated by disruption of mitochondrial function and suppression of PI3K/AKT signaling.
  • TH287 represents a promising novel therapeutic candidate for gastric cancer treatment.

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