Gene expression profile analysis of gallic acid-induced cell death process

Area of Science:

• Molecular Biology
• Cancer Research
• Pharmacology

Background:

• Gallic acid, a natural phenolic compound, exhibits anti-cancer properties.
• The precise molecular mechanisms of gallic acid-induced cancer cell death remain largely unknown.
• Understanding these mechanisms is crucial for developing novel cancer therapeutics.

Purpose of the Study:

• To elucidate the temporal gene expression profiles during gallic acid-induced cell death in HeLa cells.
• To identify the specific cell death pathways (ferroptosis, apoptosis, necroptosis) involved at different stages.
• To uncover the metabolic pathways and biological processes regulating gallic acid's anti-cancer effects.

Main Methods:

• Time-course RNA sequencing of HeLa cells treated with gallic acid at 2, 4, 6, and 9 hours.
• Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analyses.
• Investigating the role of metabolic pathways, iron metabolism, amino acid metabolism, and glutathione biosynthesis.

Main Results:

• Significant transcriptional changes were observed across ferroptotic, apoptotic, and necroptotic pathways at early, middle, and late stages, respectively.
• Metabolic pathways were active throughout the cell death process, indicating an active, regulated cell death mechanism.
• Targeting iron/amino acid metabolism and glutathione biosynthesis suppressed gallic acid-induced cell death, highlighting their critical roles.

Conclusions:

• Gallic acid induces cancer cell death via a multi-stage process involving distinct cell death modalities.
• Metabolic reprogramming, including iron and glutathione metabolism, is integral to gallic acid's cytotoxic effects.
• This study provides a valuable gene expression dataset for further research into gallic acid's anti-cancer mechanisms and therapeutic potential.