Epithelial cells as alternative human biomatrices for comet assay

Area of Science:

• Biomolecular analysis
• Cellular biology
• Environmental health

Background:

• The comet assay is crucial for mapping DNA damage in human cells.
• Epithelial cells are vital for genotoxicity assessment and cancer research.
• Previous applications of the comet assay in epithelial cells have been limited.

Purpose of the Study:

• To review advancements in using the comet assay with various epithelial cell types.
• To highlight the potential of epithelial cells as biomarkers for genotoxicity.
• To explore the clinical and diagnostic applications of the comet assay in epithelial tissues.

Main Methods:

• Review of studies utilizing the comet assay in lens, corneal, tear duct, buccal, and nasal epithelial cells.
• Analysis of sample collection and processing techniques for epithelial cells.
• Examination of DNA damage detection methodologies.

Main Results:

• The comet assay demonstrates versatility in assessing DNA damage across different epithelial cell types.
• Specific protocols, like proteinase K enrichment for buccal cells, are necessary.
• Despite sampling challenges, the assay shows promise for clinical applications.

Conclusions:

• The comet assay is a powerful tool for evaluating DNA damage in epithelial cells.
• Its application extends to environmental monitoring, risk assessment, and disease diagnosis/prognosis.
• Further research and standardization can enhance the utility of this assay in clinical settings.