AA26-9 is synthesized based on a piperazine scaffold shown previously to inhibit serine hydrolases in the context of p-nitrophenoxy carbamate. AA26-9-inhibited enzymes originated from diverse functional subclasses of serine hydrolases, including lipases/phospholipases (AADACL1, ABHD6, ESD, FAAH, PAFAH2, LYPLA3), peptidases (APEH, PRCP, CTSA), thioesterases (LYPLA1, LYPLA2), and uncharacterized enzymes (ABHD11, ABHD13, BAT5). AA26-9 inhibits one of its enzyme targets LYPLA1 by covalent carbamoylation of the enzyme’s serine nucleophile (S114). AA26-9 inhibits 1/3 of the over 40 serine hydrolase found in T-cells.
|Cell lines||T-cell hybridoma cells|
|Preparation method||Cells were then lysed and analyzed by competitive ABPP with the FP-Rh probe. Gel-based ABPP detected SHs that were inhibited by both AA38-3 and AA26-9, as well as a substantial number of additional SHs that were only inhibited by the triazole AA26-9.|
|Incubation time||4 h|
|Formulation||PEG300 or 18:1:1 saline/ethanol/emulphor intraperitoneally|
|Body Surface Area (m2)||0.007||0.025||0.15||0.05||0.02||0.5|
|Animal A (mg/kg) = Animal B (mg/kg) multiplied by||Animal B Km|
|Animal A Km|
For example, to modify the dose of resveratrol used for a mouse (22.4 mg/kg) to a dose based on the BSA for a rat, multiply 22.4 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for resveratrol of 11.2 mg/kg.
|Solubility||10 mM in DMSO|
Click-generated triazole ureas as ultrapotent in vivo-active serine hydrolase inhibitors.
Adibekian A, et al. Nat Chem Biol. 2011 May 15;7(7):469-78. PMID: 21572424.
|Related Phospholipase Products|
FIPI inhibited both PLD1 and PLD2 in a dose-dependent manner, with 50% loss of activity observed at approximately 25 nM.
U73122 is a potent inhibitor of phospholipase C, phospholipase A2 and 5-LO (5-lipoxygenase).
LY315920 is a potent, selective inhibitor of recombinant human, group IIA, nonpancreatic secretory PLA2 (sPLA2).
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