Synthesis and evaluation of a bifunctional chelate for development of Bi(III)-labeled radioimmunoconjugates
作者:Mamta Dadwal、Chi Soo Kang、Hyun A. Song、Xiang Sun、Anzhi Dai、Kwamena E. Baidoo、Martin W. Brechbiel、Hyun-Soon Chong
DOI:10.1016/j.bmcl.2011.06.107
日期:2011.12
A new bifunctional ligand C-DEPA was designed and synthesized as a component for antibody-targeted radiation therapy (radioimmunotherapy, RIT) of cancer. C-DEPA was conjugated to a tumor targeting antibody, trastuzumab, and the corresponding C-DEPA-trastuzumab conjugate was evaluated for radiolabeling kinetics with (205/6)Bi. C-DEPA-trastuzumab conjugate rapidly bound (205/6)Bi, and (205/6)Bi-C-DEPA-trastuzumab conjugate was stable in human serum for 72 h. The in vitro radiolabeling kinetics and serum stability data suggest that C-DEPA is a potential chelate for preclinical RIT applications using (212)Bi and (213)Bi. (C) 2011 Published by Elsevier Ltd.