Direct Proximity Tagging of Small Molecule Protein Targets Using an Engineered NEDD8 Ligase
摘要:
Identifying the protein targets of bioactive small molecules remains a major problem in the discovery of new chemical probes and therapeutics. While activity based probes and photo-cross-linkers have had success in identifying protein targets of small molecules, each technique has limitations. Here we describe a method for direct proximity tagging of proteins that bind small molecules. We engineered a promiscuous ligase based on the NEDD8 conjugating enzyme, Ubc12, which can be covalently linked to a small molecule of interest. When target proteins bind the small molecule, they are directly labeled on surface lysines with a biotinylated derivative of the small ubiquitin homologue, NEDD8. This unique covalent tag can then be used to identify the small molecule binding proteins. Utilizing the drug dasatinib, we have shown that dasatinib-directed NEDDylation occurs for known endogenous protein binders in complex cell lysates. In addition, we have been able to improve NEDDylation efficiency through rational mutagenesis. Finally, we have shown that affinity-directed NEDDylation can be applied to two other protein ligand interactions beyond kinases. Proximity tagging using this engineered ligase requires direct binding of the target and, thus, provides a useful and orthogonal approach to facilitate small molecule target identification.
[EN] ANTIBODY DRUG CONJUGATES FOR THE TREATMENT OF IMMUNE CONDITIONS<br/>[FR] CONJUGUÉS ANTICORPS-MÉDICAMENT POUR LE TRAITEMENT D'ÉTATS IMMUNITAIRES
申请人:CALIFORNIA INST BIOMEDICAL RES
公开号:WO2016115218A1
公开(公告)日:2016-07-21
Disclosed herein are antibody kinase inhibitor conjugates. The antibody kinase inhibitor conjugates may be used to treat conditions such as autoimmune diseases and cancers.
Efficient Synthetic Approach to Linear Dasatinib–DNA Conjugates by Click Chemistry
作者:Nan-Sheng Li、Nathan P. Gossai、Jordan A. Naumann、Peter M. Gordon、Joseph A. Piccirilli
DOI:10.1021/acs.bioconjchem.6b00557
日期:2016.10.19
A pair of syntheticapproaches to linear dasatinib–DNA conjugates via click chemistry are described. The first approach involves the reaction of excess azido dasatinib derivative with 5′-(5-hexynyl)-tagged DNAs, and the second involves the reaction of excess alkynyl-linked dasatinib with 5′-azido-tagged DNA. The second approach using alkynyl-derived dasatinib and 5′-azido-tagged DNA yielded the corresponding
[EN] DEUTERATED COMPOUNDS AND CHIMERAS AND USES THEREOF<br/>[FR] COMPOSÉS DEUTÉRÉS ET CHIMÈRES ET LEURS UTILISATIONS
申请人:BIOTHERYX INC
公开号:WO2019173224A1
公开(公告)日:2019-09-12
The present disclosure provides compounds that modulate protein function and/or restore protein homeostasis. The disclosure provides methods of modulating protein-mediated diseases, disorders, conditions, or responses. Compositions, including in combination with other therapeutic agents, are provided.