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Updated: Dec 28, 2025

Author Spotlight: Unveiling Transmembrane Protein Family-Related Markers in Gastric Cancer and Implications for Targeted Therapies
Published on: September 15, 2023
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.
Abstract:
Cancer cells evade oxidative stress through the MutT homologue-1 (MTH1), a member of the Nudix family. MTH1 maintains genome integrity and the viability of tumor cells. A new class of MTH1 inhibitors have attracted interest as anticancer agents, but their mechanisms of action remain poorly characterized. In this study, the authors evaluated the anticancer effects of the MTH1 inhibitor TH287 on gastric cancer (GCa) cells. BGC-823 and SGC-7901 cells were treated with TH287 and CCK-8, and colony-forming assays were performed. Cell migration was assessed through Transwell and scratch assays. Apoptotic status was measured via flow cytometry and 5,5',6,6'-tetrachloro-1,1',3,3'-tetraethylbenzimidazolyl-carbocyanine iodide (JC-1) staining. Cell cycle status was assessed by propidium iodide (PI) staining. The expression of PI3K/AKT signaling-related proteins was verified by western blotting. TH287 inhibited cell viability, reduced cell proliferation, inhibited apoptosis, induced G2/M arrest, and suppressed cell migration. A loss of mitochondrial membrane potential and reduced Bcl-2/Bax expression were also observed in TH287-treated cells. These effects were mediated through the inhibition of pro-oncogenic PI3K/AKT signaling. These findings indicate that the MTH1 inhibitor TH287 mediates an array of anticancer effects in GCa cells through its effects on mitochondrial function and PI3K/AKT signaling. Collectively, these data highlight the promise of TH287 as a novel therapeutic option for GCa cells.
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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