[EN] MULTIFUNCTIONAL CHELATORS, COMPLEXES, AND COMPOSITIONS THEREOF, AND METHODS OF USING SAME<br/>[FR] CHÉLATEURS MULTIFONCTIONNELS, COMPLEXES, ET COMPOSITIONS DE CEUX-CI, ET LEURS PROCÉDÉS D'UTILISATION
申请人:ILLINOIS TECHNOLOGY INST
公开号:WO2015051362A1
公开(公告)日:2015-04-09
Multifunctional chelators, metal complexes thereof, compositions thereof, and methods of making and use in diagnostic imaging and treatment of cellular disorders.
MULTIFUNCTIONAL CHELATORS, COMPLEXES, AND COMPOSITIONS THEREOF, AND METHODS OF USING SAME
申请人:ILLINOIS INSTITUTE OF TECHNOLOGY
公开号:US20160235870A1
公开(公告)日:2016-08-18
Multifunctional chelators, metal complexes thereof, compositions thereof, and methods of making and use in diagnostic imaging and treatment of cellular disorders.
Synthesis and Preclinical Evaluation of Bifunctional Ligands for Improved Chelation Chemistry of <sup>90</sup>Y and <sup>177</sup>Lu for Targeted Radioimmunotherapy
作者:Chi Soo Kang、Xiang Sun、Fang Jia、Hyun A Song、Yunwei Chen、Michael Lewis、Hyun-Soon Chong
DOI:10.1021/bc200696b
日期:2012.9.19
We report a practical and high-yield synthesis of a bimodal bifunctional ligand 3p-C-NETA-NCS containing the isothiocyanate group for conjugation to a tumor targeting antibody. 3p-C-NETA-NCS was conjugated to a tumor-targeting antibody, trastuzumab, and the corresponding 3p-C-NETA-trastuzumab conjugate was evaluated and compared to trastuzumab conjugates of the known bifunctional ligands C-DOTA, C-DTPA, and 3p-C-DEPA for radiolabeling kinetics with Y-90 and Lu-177. 3p-C-NETA-trastuzumab conjugate exhibited extremely rapid complexation kinetics with Y-90 and Lu-177. Y-90-3p-C-NETA-trastuzumab and Lu-177-3p-C-NETA-trastuzumab conjugates were stable in human serum for 2 weeks. A pilot biodistribution study was conducted to evaluate in vivo stability and tumor targeting of Lu-177-radiolabeled trastuzumab conjugate using nude mice bearing ZR-75-1 human breast cancer. Lu-177-3p-C-NETA-trastuzumab conjugate displayed low radioactivity level at blood (1.6%), low organ uptake (<2.2%), and high tumor-to-blood ratio (6.4) at 120 h. 3p-C-NETA possesses favorable in vitro and in vivo profiles and is an excellent bifunctional chelator that can be used for targeted RIT applications using Y-90 and Lu-177 and has the potential to replace DOTA and DTPA analogues in current clinical use.