Diagnostic Imaging Agents for Alzheimer’s Disease: Copper Radiopharmaceuticals that Target Aβ Plaques
作者:James L. Hickey、SinChun Lim、David J. Hayne、Brett M. Paterson、Jonathan M. White、Victor L. Villemagne、Peter Roselt、David Binns、Carleen Cullinane、Charmaine M. Jeffery、Roger I. Price、Kevin J. Barnham、Paul S. Donnelly
DOI:10.1021/ja4057807
日期:2013.10.30
One of the pathological hallmarks of Alzheimer's disease is the presence of amyloid-beta plaques in the brain and the major constituent of these plaques is aggregated amyloid-beta peptide. New thiosemicarbazone-pyridylhydrazine based ligands that incorporate functional groups designed to bind amyloid-beta plaques have been synthesized. The new ligands form stable four coordinate complexes with a positron-emitting radioactive isotope of copper, Cu-64. Two of the new Cu-II complexes include a functionalized styrylpyridine group and these complexes bind to amyloid-beta plaques in samples of post-mortem human brain tissue. Strategies to increase brain uptake by functional group manipulation have led to a Cu-64 complex that effectively crosses the blood-brain barrier in wild-type mice. The new complexes described in this manuscript provide insight into strategies to deliver metal complexes to amyloid-beta plaques.
METAL COMPLEXES AS IMAGING AGENTS
申请人:The University of Melbourne
公开号:US20150037253A1
公开(公告)日:2015-02-05
The present invention relates to copper, gallium and technetium coordinated thiosemicarbazone-pyridylhydrazine (substituted at the pyridine ring with a substituted benzothiazole or stilbene moiety) complexes and methods thereof. Such compounds possess utility in PET imaging and diagnosis of amyloid diseases.