Synthesis and Biological Evaluation of Novel Macrocyclic Ligands with Pendent Donor Groups as Potential Yttrium Chelators for Radioimmunotherapy with Improved Complex Formation Kinetics
作者:Hyun-soon Chong、Kayhan Garmestani、Dangshe Ma、Diane E. Milenic、Terrish Overstreet、Martin W. Brechbiel
DOI:10.1021/jm0200759
日期:2002.8.1
and high-yield cyclization route. The complexation kinetics of the novel chelates with Y(III) was investigated and compared to that of 1,4,7,10-tetraazacyclododecane-N,N',N' ',N" '-tetraacetic acid (DOTA), a macrocyclic chelating agent well recognized as forming very stable complexes with yttrium but also limited in usage because of slow Y(III) complex formation rates. The in vitro stability of the
基于新型1,4,7-三氮杂环壬烷-N,N',N'-三乙酸(NOTA)的八齿配体[2-(4,7-双羧甲基[1,4,7]三氮杂环壬烷-1-基乙基)羰基甲基氨基]乙酸四盐酸盐(1)和[3-(4,7-双羧甲基[1,4,7]三氮杂环壬基-1-基-丙基)羰基甲基氨基]乙酸四盐酸盐(2)具有侧基供体基团作为潜在的钇螯合剂用于放射免疫治疗( RIT)是通过便捷且高产的环化途径制备的。研究了新型螯合物与Y(III)的络合动力学并将其与1,4,7,10-四氮杂环十二烷-N,N',N'',N“'-四乙酸(DOTA)的络合动力学进行了比较公认的螯合剂可与钇形成非常稳定的络合物,但由于Y(III)络合物的形成速度较慢,因此使用受到限制。通过测量在14天中复合物中(88)Y的释放来评估相应(88)Y标记的复合物在人血清中的体外稳定性。评价了(86)Y标记的1在小鼠中的体内生物分布,并与(86)Y-DOTA复合物进行了