Carcinogens and Genotoxicity Assessment

Genotoxicity assessment examines how chemical substances damage DNA—breaking strands, forming adducts, or triggering mutations—and whether that damage sets cells on a path toward cancer. Techniques like the comet assay, which tracks strand breaks in individual cells, and the micronucleus assay, which detects chromosomal instability, give researchers quantitative tools to evaluate the carcinogenic potential of industrial chemicals, pharmaceuticals, and environmental pollutants in both laboratory models and human populations. Biomonitoring studies extend this work into real-world settings, measuring DNA damage in workers or communities exposed to complex mixtures where the genotoxic contribution of individual compounds is difficult to isolate. Active research challenges include improving the predictive accuracy of in vitro tests for human cancer risk, understanding how low-dose chronic exposures compare to acute high-dose exposures, and accounting for the role of DNA repair capacity in determining whether initial damage actually progresses to heritable mutation.

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93,871

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Keywords

Comet AssayGenotoxicity TestingMicronucleus AssayDNA DamageCarcinogenesisEnvironmental Monitoring