High-Affinity “Click” RGD Peptidomimetics as Radiolabeled Probes for Imaging α<sub>v</sub>
β<sub>3</sub>
Integrin
作者:Monica Piras、Andrea Testa、Ian N. Fleming、Sergio Dall'Angelo、Alexandra Andriu、Sergio Menta、Mattia Mori、Gavin D. Brown、Duncan Forster、Kaye J. Williams、Matteo Zanda
DOI:10.1002/cmdc.201700328
日期:2017.7.20
αIIb β3 receptors was investigated by molecular modeling simulations. Lead compound 12 was successfully radiofluorinated and used for in vivo positron emission tomography/computed tomography (PET/CT) studies in U87 tumor models, which showed only modest tumor uptake and retention, owing to rapid excretion. These results demonstrate that the novel click RGD mimics are excellent radiolabeled probes for in vitro
通过精氨酸-叠氮化物模拟物和天冬氨酸-炔模拟物之间的点击化学设计并合成了非肽Arg-Gly-Asp(RGD)-模拟配体。这些分子中的一些结合了出色的体外特性(高αvβ3亲和力,选择性,类药物logD,高代谢稳定性)和多种放射性标记选项(例如tri和氟-18,以及与放射性碘的相容性),需要使用螯合剂或假肢。通过分子模拟模拟研究了所得三唑RGD模拟物与αvβ3或αIIbβ3受体的结合模式。铅化合物12已成功地被氟化,并用于U87肿瘤模型的体内正电子发射断层扫描/计算机断层扫描(PET / CT)研究,由于快速排泄,该研究仅显示了适度的肿瘤吸收和保留。