作者:Miriam Tomasch、J. Stephan Schwed、Karina Kuczka、Sascha Meyer dos Santos、Sebastian Harder、Rolf M. Nüsing、Alexander Paulke、Holger Stark
DOI:10.1021/ml300191g
日期:2012.9.13
Exchange of the lipophilc part of ortho-substituted cinnamic acid lead structures with different small molecule fluorophoric moieties via a dimethylene spacer resulted in hEP(3)R ligands with affinities in the nanomolar concentration range. Synthesized compounds emit fluorescence in the blue, green, and red range of light and have been tested concerning their potential as a pharmacological tool. hEP(3)Rs were visualized by confocal laser scanning microscopy on HT-29 cells, on murine kidney tissues, and on human brain tissues and functionally were characterized as antagonists on human platelets. Inhibition of PGE(2) and collagen-induced platelet aggregation was measured after preincubation with novel hEP(3)R ligands. The pyryllium-labeled ligand 8 has been shown as one of the most promising structures, displaying a useful fluorescence and highly affine hEP(3)R antagonists.