作者:Lihai Yu、Jinquan Cui、Prashanth K. Padakanti、Laura Engel、Devika P. Bagchi、Paul T. Kotzbauer、Zhude Tu
DOI:10.1016/j.bmc.2012.06.023
日期:2012.8
Accumulation of misfolded alpha-synuclein in Lewy bodies and Lewy neurites is the pathological hallmark of Parkinson's disease (PD). To identify ligands having high binding potency toward aggregated alpha-synuclein, we synthesized a series of phenothiazine derivatives and assessed their binding affinity to recombinant alpha-synuclein fibrils using a fluorescent thioflavin T competition assay. Among 16 new analogues, the in vitro data suggest that compound 11b has high affinity to alpha-synuclein fibrils (K-i = 32.10 +/- 1.25 nM) and compounds 11d, 16a and 16b have moderate affinity to alpha-synuclein fibrils (K-i approximate to 50-100 nM). Further optimization of the structure of these analogues may yield compounds with high affinity and selectivity for aggregated alpha-synuclein. (C) 2012 Elsevier Ltd. All rights reserved.