Methods for discovery of enzyme ligands and inhibitors are disclosed. The methods comprise the creation and testing of combinatorial libraries comprising an active site-targeted component, a linker component and a peripheral site-targeted component. The methods also comprise a novel assay for determining whether a compound is a ligand of an enzyme. The assay evaluates whether the compound can inhibit the binding of a known ligand of the active site of the enzyme to a mutant of the enzyme that can bind the enzyme substrate but cannot catalyze an enzymatic reaction with the substrate. Various ligands and inhibitors of protein tyrosine phosphatase 1B (PTP1B) are also disclosed. These ligands and inhibitors were discovered using the above methods. One particular inhibitor discovered using the invention methods has the highest specificity and affinity of any PTP1B inhibitor discovered to date.
申请人:ALBERT EINSTEIN COLLEGE OF MEDICINE OF YESHIVA UNIVERSITY
公开号:EP1435989A1
公开(公告)日:2004-07-14
[EN] PTP1B INHIBITORS AND LIGANDS<br/>[FR] INHIBITEURS ET LIGANDS DE PTP1B
申请人:EINSTEIN COLL MED
公开号:WO2003041729A1
公开(公告)日:2003-05-22
Methods for discovery of enzyme ligands and inhibitors are disclosed. The methods comprise the creation and testing of combinatorial libraries comprising an active site-targeted component, a linker component and a peripheral site-targeted component. The methods also comprise a novel assay for determining whether a compound is a ligand of an enzyme. The assay evaluates whether the compound can inhibit the binding of a known ligand of the active site of the enzyme to a mutant of the enzyme that can bind the enzyme substrate but cannot catalyze an enzymatic reaction with the substrate. Various ligands and inhibitors of protein tyrosine phosphatase 1B (PTP1B) are also disclosed. These ligands and inhibitors were discovered using the above methods. One particular inhibitor discovered using the invention methods has the highest specificity and affinity of any PTP1B inhibitor discovered to date.
Design, Construction, and Intracellular Activation of an Intramolecularly Self-Silenced Signal Transduction Inhibitor
作者:Seung-Yub Lee、Fubo Liang、Xiao-Ling Guo、Laiping Xie、Sean M. Cahill、Michael Blumenstein、Heyi Yang、David S. Lawrence、Zhong-Yin Zhang