PMID- 22989775 OWN - NLM STAT- MEDLINE DCOM- 20130528 LR - 20211021 IS - 1872-7786 (Electronic) IS - 0009-2797 (Print) IS - 0009-2797 (Linking) VI - 203 IP - 1 DP - 2013 Mar 25 TI - Aryl methylcarbamates: potency and selectivity towards wild-type and carbamate-insensitive (G119S) Anopheles gambiae acetylcholinesterase, and toxicity to G3 strain An. gambiae. PG - 314-8 LID - S0009-2797(12)00166-4 [pii] LID - 10.1016/j.cbi.2012.09.001 [doi] AB - New carbamates that are highly selective for inhibition of Anopheles gambiae acetylcholinesterase (AChE) over the human enzyme might be useful in continuing efforts to limit malaria transmission. In this report we assessed 34 synthesized and commercial carbamates for their selectivity to inhibit the AChEs found in carbamate-susceptible (G3) and carbamate-resistant (Akron) An. gambiae, relative to human AChE. Excellent correspondence is seen between inhibition potencies measured with carbamate-susceptible mosquito homogenate and purified recombinant wild-type (WT) An. gambiae AChE (AgAChE). Similarly, excellent correspondence is seen between inhibition potencies measured with carbamate-resistant mosquito homogenate and purified recombinant G119S AgAChE, consistent with our earlier finding that the Akron strain carries the G119S mutation. Although high (100- to 500-fold) WT An. gambiae vs human selectivity is observed for several compounds, none of the carbamates tested potently inhibits the G119S mutant enzyme. Finally, we describe a predictive model for WT An. gambiae tarsal contact toxicity of the carbamates that relies on inhibition potency, molecular volume, and polar surface area. CI - Copyright (c) 2012 Elsevier Ireland Ltd. All rights reserved. FAU - Wong, Dawn M AU - Wong DM AD - Department of Chemistry, Virginia Tech, Blacksburg, VA 240161, USA. FAU - Li, Jianyong AU - Li J FAU - Lam, Polo C H AU - Lam PC FAU - Hartsel, Joshua A AU - Hartsel JA FAU - Mutunga, James M AU - Mutunga JM FAU - Totrov, Maxim AU - Totrov M FAU - Bloomquist, Jeffrey R AU - Bloomquist JR FAU - Carlier, Paul R AU - Carlier PR LA - eng GR - R01 AI082581/AI/NIAID NIH HHS/United States GR - AI082581/AI/NIAID NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20120916 PL - Ireland TA - Chem Biol Interact JT - Chemico-biological interactions JID - 0227276 RN - 0 (Carbamates) RN - 0 (Cholinesterase Inhibitors) RN - 0 (Insect Proteins) RN - 0 (Insecticides) RN - 0 (Recombinant Proteins) RN - EC 3.1.1.7 (Acetylcholinesterase) SB - IM MH - Acetylcholinesterase/*genetics/*metabolism MH - Amino Acid Substitution MH - Animals MH - Anopheles/*drug effects/*enzymology/genetics MH - Carbamates/chemistry/*pharmacology MH - Cholinesterase Inhibitors/chemistry/pharmacology MH - Drug Evaluation, Preclinical MH - Humans MH - Insect Proteins/antagonists & inhibitors/genetics MH - Insecticide Resistance/genetics MH - Insecticides/chemistry/pharmacology MH - Mutagenesis, Site-Directed MH - Recombinant Proteins/antagonists & inhibitors/genetics PMC - PMC3578073 MID - NIHMS408386 EDAT- 2012/09/20 06:00 MHDA- 2013/05/29 06:00 PMCR- 2014/03/25 CRDT- 2012/09/20 06:00 PHST- 2012/08/03 00:00 [received] PHST- 2012/09/05 00:00 [revised] PHST- 2012/09/06 00:00 [accepted] PHST- 2012/09/20 06:00 [entrez] PHST- 2012/09/20 06:00 [pubmed] PHST- 2013/05/29 06:00 [medline] PHST- 2014/03/25 00:00 [pmc-release] AID - S0009-2797(12)00166-4 [pii] AID - 10.1016/j.cbi.2012.09.001 [doi] PST - ppublish SO - Chem Biol Interact. 2013 Mar 25;203(1):314-8. doi: 10.1016/j.cbi.2012.09.001. Epub 2012 Sep 16.