Small‐Molecule Inhibitors of AF6 PDZ‐Mediated Protein–Protein Interactions

Small‐Molecule Inhibitors of AF6 PDZ‐Mediated Protein–Protein Interactions
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AF6 PDZ 介导的蛋白质相互作用的小分子抑制剂

DOI:
10.1002/cmdc.201300553
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发表时间:
2014
期刊:
影响因子:
3.4
通讯作者:
Oschkinat
Oschkinat
中科院分区:
医学4区
文献类型:
--
作者:
Vargas;Radziwill;Krause;Keller;Kamdem;Czekelius;Kreuchwig;Schmieder;Moelling;Schade;Oschkinat

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PDZ(PSD-95,Dlg,ZO-1)结构域是一种普遍存在的相互作用模块,参与多种细胞信号转导途径。干扰PDZ介导的蛋白质-蛋白质相互作用在疾病相关信号传导过程中具有重要意义。出于这个原因,PDZ结构域作为抑制剂设计的潜在靶点,从长远来看,药物开发已经受到关注。在本文中,我们报告了小分子的开发,以探测来自人AF 6(来自染色体6的ALL 1融合基因)的PDZ结构域的功能,这是细胞-细胞连接的重要组成部分。 这些化合物以比衍生自其天然配体EphB 2的肽(Ile-Gln-Ser-瓦尔-Glu-瓦尔)显著更高的亲和力结合AF 6 PDZ。在完整细胞中,这些化合物抑制AF 6-Bcr相互作用并干扰表皮生长因子(EGF)依赖性信号传导。
PDZ (PSD‐95, Dlg, ZO‐1) domains are ubiquitous interaction modules that are involved in many cellular signal transduction pathways. Interference with PDZ‐mediated protein–protein interactions has important implications in disease‐related signaling processes. For this reason, PDZ domains have gained attention as potential targets for inhibitor design and, in the long run, drug development. Herein we report the development of small molecules to probe the function of the PDZ domain from human AF6 (ALL1‐fused gene from chromosome 6), which is an essential component of cell–cell junctions. These compounds bind to AF6 PDZ with substantially higher affinity than the peptide (Ile‐Gln‐Ser‐Val‐Glu‐Val) derived from its natural ligand, EphB2. In intact cells, the compounds inhibit the AF6–Bcr interaction and interfere with epidermal growth factor (EGF)‐dependent signaling.
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