Comparative Study of a Decadentate Acyclic Chelate, HOPO-O<sub>10</sub>, and Its Octadentate Analogue, HOPO-O<sub>8</sub>, for Radiopharmaceutical Applications
作者:Imma Carbo-Bague、Cen Li、Brooke L. McNeil、Yang Gao、Anthony W. McDonagh、Michiel Van de Voorde、Maarten Ooms、Peter Kunz、Hua Yang、Valery Radchenko、Georg Schreckenbach、Caterina F. Ramogida
DOI:10.1021/acs.inorgchem.2c03671
日期:——
serum challenge assay. A comprehensive analysis of the decadentate and octadentate chelates was performed with density functional theory for the La3+, Ac3+, Eu3+, Tb3+, Lu3+, and Th4+ complexes. The computational simulations demonstrated the enhanced stability of Th4+-HOPO-O10 over Th4+-HOPO-O8. This investigation reveals the potential of HOPO-O10 for the stable chelation of large tetravalent radioactinides
放射性镧系元素和锕系元素非常适合通过核医学诊断和治疗癌症,因为它们具有独特的化学和物理特性(例如放射性衰变发射)。这些稀有放射性金属最近显示出选择性地将辐射有效载荷传递给癌细胞的潜力。然而,它们的临床成功高度依赖于找到合适的配体来稳定螯合并与疾病靶向载体缀合。目前,放射性药物设计中使用的市售螯合物并不能满足核医学应用的所有要求,需要进一步探索其化学性质以合理设计高度特异性的螯合物。在此,我们描述了含有五个 1,2-羟基吡啶酮 3,4,3,3-(LI-1,2-HOPO)(本文称为 HOPO-O 10 )的新型颓形无环螯合物的合理设计和化学开发,基于众所周知的八齿配体3,4,3-(LI-1,2-HOPO),本文称为HOPO-O 8 ,是89 Zr[Zr 4+ ]的高效螯合剂。对La 3+和Tb 3+配合物的1 H NMR光谱和质谱分析表明,与仅形成单金属物质的HOPO-O 8相比,HOPO-O