Zymography

Zymography refers to an electrophoresis-based laboratory technique used to detect and analyse enzyme activity, most commonly proteases such as matrix metalloproteinases, by incorporating enzyme substrates into polyacrylamide gels. After separation, enzymes renature and degrade the embedded substrate, producing clear bands against a stained background indicating enzymatic activity and approximate molecular weight. Zymography provides functional information by measuring activity rather than simply protein presence.

In biopharmaceutical research, zymography is used to study protease biology in cancer, inflammation, tissue remodelling, and fibrosis, where protease activity drives pathological progression. It supports biomarker research by evaluating changes in enzyme activity associated with disease states or treatment effects. Drug discovery programmes targeting proteases employ zymography to assess inhibitor potency and selectivity by measuring reduced substrate degradation. The method is relatively sensitive and cost-effective, though semi-quantitative and dependent on careful standardisation of gel conditions, sample preparation, and incubation parameters. As protease-driven mechanisms remain central across multiple therapeutic areas, zymography continues serving as a practical tool linking enzyme expression to functional activity in disease and treatment evaluation.