[EN] METHOD AND ARRAY FOR IDENTIFYING HISTONE-CODE-RELATED ANALYTES<br/>[FR] PROCÉDÉ ET RÉSEAU POUR L'IDENTIFICATION D'ANALYTES LIÉS AU CODE DES HISTONES
申请人:UVIC INDUSTRY PARTNERSHIPS INC
公开号:WO2013091074A1
公开(公告)日:2013-06-27
Disclosed embodiments concern an array for use in identifying or identifying and quantifying analytes in a sample using a macrocyclic sensor comprising a macrocyclic compound and a detectable moiety. The disclosed array may be used to discriminate among various analytes based on different features, such as post- translational modifications, isomeric post-translational modifications, and the peptide sequence around post-translational modifications. Also disclosed is a method for identifying analytes comprising a post-translational modification, as well as an enzymatic assay using the disclosed macrocyclic sensor.
Synthetic trimethyllysine receptors that bind histone 3, trimethyllysine 27 (H3K27me3) and disrupt its interaction with the epigenetic reader protein CBX7
作者:Sara Tabet、Sarah F. Douglas、Kevin D. Daze、Graham A.E. Garnett、Kevin J.H. Allen、Emma M.M. Abrioux、Taylor T.H. Quon、Jeremy E. Wulff、Fraser Hof
DOI:10.1016/j.bmc.2013.09.024
日期:2013.11
Post-translational modifications act as 'on' or 'off' switches causing downstream changes in gene transcription. Modifications such as trimethylation of lysine 27 on histone H3 (H3K27me3) cause repression of transcription and stable gene silencing, and its presence is associated with aggressive cancers of many types. We report here macrocyclic host-type compounds that can bind H3K27me3 preferentially over unmethylated H3K27, and characterize their binding affinities and selectivities using a convenient dye-displacement method. We also show that they can disrupt the protein-protein interaction of H3K27me3 with the chromobox homolog 7 (CBX7), a methyllysine reader protein, using fluorescence polarization. These results show that sub-micromolar potencies are achievable with this family of host compounds, and suggest the possibility of their use as new tools to induce the disruption of methyllysine-mediated protein-protein interactions and to report on lysine methylation in vitro. (C) 2013 Elsevier Ltd. All rights reserved.
Synthesis of New Trisulfonated Calix[4]arenes Functionalized at the Upper Rim, and Their Complexation with the Trimethyllysine Epigenetic Mark
作者:Kevin D. Daze、Manuel C. F. Ma、Florent Pineux、Fraser Hof
DOI:10.1021/ol300243b
日期:2012.3.16
to produce a new family of trisulfonated calix[4]arenes bearing a single group, selectively introduced, that lines the binding pocket is reported. Ten examples, including new sulfonamide and biphenyl-substituted hosts, each with additional binding elements, demonstrate the tuning of guest affinities and selectivities. NMR titrations in phosphate-buffered water show that one of the new hosts binds to