Human CYP1A2 metabolizes organophosphorus compounds, and is also inhibited by them
- LC-MS/MS metabolism assays and a fluorescence inhibition assay were used to test how human CYP1A2 handles organophosphorus pesticides and nerve agent surrogates.
- Thion forms were turned over more readily than oxon forms, and several compounds inhibited the enzyme in a time- and concentration-dependent manner.
- Docking on a CYP1A2 crystal structure was consistent with the experimental trends.
💡 Points Based on the abstract
The time-dependent inhibition is what catches my eye: an exposure that quietly inactivates CYP1A2 would shift the clearance of co-administered substrates such as caffeine, theophylline or clozapine. The bioscavenger idea is a stretch from recombinant enzyme work, and I'd want hepatocyte data and realistic exposure levels before reading anything into clinical or occupational risk.
Human CYP1A2 metabolism of organophosphorus pesticides and nerve agent surrogates ↗