Pharmacological Characterization and Radiolabeling of VUF15485, a High-Affinity Small-Molecule Agonist for the Atypical Chemokine Receptor ACKR3
作者:Aurelien M. Zarca、Ilze Adlere、Cristina P. Viciano、Marta Arimont-Segura、Max Meyrath、Icaro A. Simon、Jan Paul Bebelman、Dennis Laan、Hans G. J. Custers、Elwin Janssen、Kobus L. Versteegh、Maurice C. M. L. Buzink、Desislava N. Nesheva、Reggie Bosma、Iwan J. P. de Esch、Henry F. Vischer、Maikel Wijtmans、Martyna Szpakowska、Andy Chevigné、Carsten Hoffmann、Chris de Graaf、Barbara A. Zarzycka、Albert D. Windhorst、Martine J. Smit、Rob Leurs
DOI:10.1124/molpharm.123.000835
日期:2024.4
(Kd = 8.2 nM). Additionally, [3H]VUF15485 shows rapid binding kinetics and consequently a short residence time (<2 minutes) for binding to ACKR3. The selectivity of [3H]VUF15485 for ACKR3, was confirmed by binding studies, whereupon CXCR3, CXCR4, and ACKR3 small-molecule ligands were competed for binding against the radiolabeled agonist. Interestingly, the chemokine ligands CXCL11 and CXCL12 are not able
非典型趋化因子受体 3 (ACKR3),以前称为 CXCR7,被认为是一个有趣的药物靶点。在这项研究中,我们报告了 VUF15485(一种新型 ACKR3 小分子激动剂)的合成、药理学表征和放射性标记,它将作为研究这种β-抑制蛋白偏向趋化因子受体的重要新工具。根据 [ 125 I]CXCL12 竞争结合实验的测量,VUF15485 以纳摩尔亲和力 (pIC 50 = 8.3) 与人 ACKR3 结合。此外,在基于生物发光共振能量转移的β -arrestin2 招募测定中,VUF15485 充当有效的 ACKR3 激动剂 (pEC 50 = 7.6),并且当使用新开发的荧光共振能量转移时,与 CXCL12 相比,显示出相似的受体激活程度。基于ACKR3构象传感器。此外,针对(非典型)趋化因子受体组(激动剂和拮抗剂模式)测试的 ACKR3 激动剂 VUF15485 被证明对 ACKR3 具有选择性。