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Curr Alzheimer Res ; 4(5): 562-7, 2007 Dec.
Article in English | MEDLINE | ID: mdl-18220523

ABSTRACT

Amyloid beta-derived diffusible ligands (ADDLs) comprise the neurotoxic subset of soluble Abeta(1-42) oligomers, now widely considered to be the molecular cause of memory malfunction and neurodegeneration in Alzheimer's disease (AD). We have developed a screening cascade which identifies small molecule modulators of ADDL-mediated neurotoxicity. The primary screen involves a fluorescence resonance energy transfer (FRET)-based assay which selects inhibitors of Abeta1-42 oligomer assembly. The identified hits were further characterized by assessing their ability to inhibit the assembly and binding of ADDLs to cultures of primary hippocampal neurons. This approach has led to the identification of a number of small molecules which inhibit ADDL assembly and their subsequent binding to neurons. Here we describe our small molecule discovery efforts to identify ADDL assembly blocker and ADDL binding inhibitors, and to transform validated hits into pre-clinical lead compounds.


Subject(s)
Alzheimer Disease/drug therapy , Amyloid beta-Peptides/metabolism , Antipsychotic Agents/therapeutic use , Amyloid beta-Peptides/antagonists & inhibitors , Amyloid beta-Peptides/chemistry , Animals , Antipsychotic Agents/chemistry , Drug Design , Humans , Small Molecule Libraries
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