Identification of an antitumor effect of demethylzeylasteral on human gastric cancer cells

Area of Science:

• Oncology
• Pharmacology
• Molecular Biology

Background:

• Gastric cancer presents a significant global health challenge, particularly in China, with advanced stages having poor prognoses.
• Novel therapeutic strategies are crucial for improving survival rates in gastric cancer patients.
• Demethylzeylasteral, derived from Tripterygium wilfordii, has demonstrated anticancer properties, but its specific effects on gastric cancer require elucidation.

Purpose of the Study:

• To investigate the antitumor effects of demethylzeylasteral on human gastric cancer cells.
• To explore the underlying molecular mechanisms of demethylzeylasteral's action in gastric cancer.

Main Methods:

• Cell Counting Kit-8 and colony formation assays to assess proliferation.
• Transwell assay to evaluate cell migration.
• Flow cytometry to analyze apoptosis and mitochondrial membrane potential.
• Western blotting to examine protein expression and phosphorylation levels (ERK1/2, AKT, GSK-3β, Bcl-2, Bax, caspases, PARP).

Main Results:

• Demethylzeylasteral significantly inhibited gastric cancer cell proliferation and migration in a dose-dependent manner.
• Treatment induced apoptosis and reduced mitochondrial membrane potential in gastric cancer cells.
• Demethylzeylasteral downregulated ERK1/2, AKT, and GSK-3β phosphorylation, decreased Bcl-2 expression, and increased Bax, cleaved caspase-3, cleaved caspase-9, and cleaved PARP expression.

Conclusions:

• Demethylzeylasteral demonstrates significant therapeutic potential against gastric cancer.
• The compound exerts its effects by inhibiting proliferation, migration, and inducing apoptosis through modulation of key signaling pathways and apoptosis-related proteins.