%0 Journal Article %T Cyprocide selectively kills nematodes via cytochrome P450 bioactivation. %A Knox J %A Burns AR %A Cooke B %A Cammalleri SR %A Kitner M %A Ching J %A Castelli JMP %A Puumala E %A Snider J %A Koury E %A Collins JB %A Geissah S %A Dowling JJ %A Andersen EC %A Stagljar I %A Cowen LE %A Lautens M %A Zasada I %A Roy PJ %J Nat Commun %V 15 %N 1 %D 2024 Jul 2 %M 38956039 %F 17.694 %R 10.1038/s41467-024-49738-4 %X Left unchecked, plant-parasitic nematodes have the potential to devastate crops globally. Highly effective but non-selective nematicides are justifiably being phased-out, leaving farmers with limited options for managing nematode infestation. Here, we report our discovery of a 1,3,4-oxadiazole thioether scaffold called Cyprocide that selectively kills nematodes including diverse species of plant-parasitic nematodes. Cyprocide is bioactivated into a lethal reactive electrophilic metabolite by specific nematode cytochrome P450 enzymes. Cyprocide fails to kill organisms beyond nematodes, suggesting that the targeted lethality of this pro-nematicide derives from P450 substrate selectivity. Our findings demonstrate that Cyprocide is a selective nematicidal scaffold with broad-spectrum activity that holds the potential to help safeguard our global food supply.