摘要:
The present invention provides common ligand mimics that act as common ligands for a receptor family. The present invention also provides bi-ligands containing these common ligand mimics. Bi-ligands of the invention provide enhanced affinity and/or selectivity of ligand binding to a receptor or receptor family through the synergistic action of the common ligand mimic and specificity ligand that compose the bi-ligand. The present invention also provides combinatorial libraries containing the common ligand mimics and bi-ligands of the invention. Further, the present invention provides methods for manufacturing the common ligand mimics and bi-ligands of the invention and methods for assaying the combinatorial libraries of the invention.
摘要:
The present invention provides common ligand mimics that act as common ligands for a receptor family. The present invention also provides bi-ligands containing these common ligand mimics. Bi-ligands of the invention provide enhanced affinity and/or selectivity of ligand binding to a receptor or receptor family through the synergistic action of the common ligand mimic and specificity ligand which compose the bi-ligand. The present invention also provides combinatorial libraries containing the common ligand mimics and bi-ligands of the invention. Further, the present invention provides methods for manufacturing the common ligand mimics and bi-ligands of the invention and methods for assaying the combinatorial libraries of the invention.
摘要:
Methods for rapidly identifying drug candidates that can bind to an enzyme at both a common ligand site and a specificity ligand site, resulting in high affinity binding. The bi-ligand drug candidates are screened from a focused combinatorial library where the specific points of variation on a core structure are optimized. The optimal points of variation are identified by which atoms of a ligand bound to the common ligand site are identified to be proximal to the specificity ligand site. As a result, the atoms proximal to the specificity ligand site can then be used as a point for variation to generate a focused combinatorial library of high affinity drug candidates that can bind to both the common ligand site and the specificity ligand site. Different candidates in the library can then have high affinity for many related enzymes sharing a similar common ligand site.
摘要:
A method for preferentially observing an exposed position (1c) of a macromolecule. A sample is obtained having a macromolecule (1a) with a first proton (1) and a second molecule (2a) with a second proton (2); then applying a magnetic field (4) to the sample and irradiating the sample with a pulse sequence (5) that preferentially demagnetizes protons of the macromolecule (1,3) relative to the second proton (2); allowing the second proton (2) to exchange (6) with an exposed proton (1) of the macromolecule; and detecting the magnetization from the relatively magnetized second proton (2), which is now bound to the exposed position (1c) of the macromolecule. The invention also provides a method for observing a position in the macromolecule that bind a ligand.
摘要:
Methods for rapidly identifying drug candidates that can bind to an enzyme at both a common ligand site and a specificity ligand site, resulting in high affinity binding. The bi-ligand drug candidates are screened from a focused combinatorial library where the specific points of variation on a core structure are optimized. The optimal points of variation are identified by which atoms of a ligand bound to the common ligand site are identified to be proximal to the specificity ligand site. As a result, the atoms proximal to the specificity ligand site can then be used as a point for variation to generate a focused combinatorial library of high affinity drug candidates that can bind to both the common ligand site and the specificity ligand site. Different candidates in the library can then have high affinity for many related enzymes sharing a similar common ligand site.
摘要:
The invention provides a method for determining a structure model for a test ligand bound to a macromolecule binding site. Structural constraints for the test ligand are derived from spectroscopic signals arising from interactions between the test ligand and macromolecule. The structure constraints are used as constraints in docking a structure model of the ligand to a structure model of the macromolecule, or as constraints in overlaying a structure model of the test ligand on the known structure for a reference ligand that binds to the macromolecule. The invention further provides a method for determining a structure model for a macromolecule bound to a ligand. Structural constraints derived from spectroscopically observed interactions of the macromolecule and a reference ligand are used to guide molecular modeling or to evaluate the results of a molecular modeling simulation of the macromolecule.
摘要:
The invention provides a method for obtaining a binding compound for a protein family, wherein the members of the protein family bind a common ligand. The method includes the steps of (a) providing a sample containing a protein from the protein family, a first ligand and a second ligand under conditions wherein the first ligand, the second ligand and the protein form a bound complex; (b) detecting magnetization transfer between the first ligand and the second ligand in the bound complex, thereby determining that the two ligands are proximal in the bound complex; and (c) obtaining a candidate binding compound including the first ligand, or a fragment thereof linked to the second ligand, or a homolog thereof, whereby the population contains binding compounds that bind to members of the protein family.
摘要:
The present invention describes an improved method for screening compounds for activity in inhibiting the enzymatic activity of Akt1 protein kinase. In general, the method comprises: (1) providing a plurality of compounds suspected of having Akt1 kinase inhibitory activity; (2) modeling the docking of each of the plurality of the compounds with a target binding site; (3) ranking the docked compounds by goodness of fit; (4) further selecting compounds; (5) optionally, visually analyzing structures of compounds selected in step (4) to remove any compounds with improbable docking geometry; and (6) experimentally testing the selected compounds from step (4) or step (5), if step (5) is performed, to determine their inhibitory activity against Akt1. The invention also encompasses pharmaceutical compositions including compounds whose inhibitory activity against Akt1 is discovered by the screening method, as well as methods of use of the pharmaceutical compositions to prevent and treat cancer and other conditions.
摘要:
The present invention provides compounds having the general structure I, or a pharmaceutically acceptable salt thereof: wherein X is a six-member ring selected from phenyl, pyridine, or pyrimidine; Y is H, an alkenyl, a substituted alkenyl, or alkynyl, and R is H or alkyl. Pharmaceutical compositions for treating various disorders such as cancers, the compositions including compound I are also provided.