PMID- 18220329 OWN - NLM STAT- MEDLINE DCOM- 20080519 LR - 20141120 IS - 0022-2623 (Print) IS - 0022-2623 (Linking) VI - 51 IP - 4 DP - 2008 Feb 28 TI - Vesicular monoamine transporter substrate/inhibitor activity of MPTP/MPP+ derivatives: a structure-activity study. PG - 760-8 LID - 10.1021/jm070875p [doi] AB - The active metabolite of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP), N-methyl-4-phenylpyridinium (MPP(+)), selectively destroys the dopaminergic neurons and induces the symptoms of Parkinson's disease. Inhibition of mitochondrial complex I and/or the perturbation of dopamine metabolism through cellular and granular accumulation have been proposed as some of the major causes of neurotoxicity. In the present study we have synthesized and characterized a number of MPTP and MPP(+) derivatives that are suitable for the comparative neurotoxicity and complex I inhibition versus dopamine metabolism perturbation studies. Structure-activity studies with bovine chromaffin granule ghosts show that 3'-hydroxy-MPP(+) is one of the best known substrates for the vesicular monoamine transporter (VMAT). A series of compounds that combine the structural features of MPP(+) and a previously characterized VMAT inhibitor, 3-amino-2-phenyl-propene, have been identified as the most effective VMAT inhibitors. These derivatives have been used to define the structural requirements of the VMAT substrate and inhibitor activities. FAU - Wimalasena, D Shyamali AU - Wimalasena DS AD - Department of Chemistry, Wichita State University, Wichita, Kansas 67260-0051, USA. FAU - Perera, Rohan P AU - Perera RP FAU - Heyen, Bruce J AU - Heyen BJ FAU - Balasooriya, Inoka S AU - Balasooriya IS FAU - Wimalasena, Kandatege AU - Wimalasena K LA - eng GR - NS 39423/NS/NINDS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20080126 PL - United States TA - J Med Chem JT - Journal of medicinal chemistry JID - 9716531 RN - 0 (Vesicular Monoamine Transport Proteins) RN - 9P21XSP91P (1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine) RN - R865A5OY8J (1-Methyl-4-phenylpyridinium) SB - IM MH - 1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine/*analogs & derivatives/*chemical synthesis/pharmacology MH - 1-Methyl-4-phenylpyridinium/*analogs & derivatives/*chemical synthesis/pharmacology MH - Animals MH - Cattle MH - Chromaffin Granules/drug effects/metabolism MH - Crystallography, X-Ray MH - In Vitro Techniques MH - Models, Molecular MH - Structure-Activity Relationship MH - Vesicular Monoamine Transport Proteins/*antagonists & inhibitors/metabolism EDAT- 2008/01/29 09:00 MHDA- 2008/05/20 09:00 CRDT- 2008/01/29 09:00 PHST- 2008/01/29 09:00 [pubmed] PHST- 2008/05/20 09:00 [medline] PHST- 2008/01/29 09:00 [entrez] AID - 10.1021/jm070875p [doi] PST - ppublish SO - J Med Chem. 2008 Feb 28;51(4):760-8. doi: 10.1021/jm070875p. Epub 2008 Jan 26.