An aptamer-N-heterocyclic-carbene metal complex conjugate (aptamer-NHCM conjugate) or an aptamer-bis-N-heterocyclic-carbene metal complex conjugate (aptamer-bis-NHCM conjugate) includes an aptamer coupled through a hydrolytically stable bond to an N-heterocyclic-carbene metal complex (NHCM) or a bis-N-heterocyclic-carbene metal complex (bis-NHCM). The aptamer-NHCM conjugate is prepared where the chosen aptamer displays selective binding to a cell specific receptor, such that the cytotoxic NHCM can be directed specifically to cells responsible for a target disease (e.g., a specific cancer type). A method of preparing the aptamer-N-heterocyclic-carbene metal complex conjugate involves installing a coupling group to an N-heterocyclic-carbene metal complex that can specifically bond with a functional group on an aptamer; the bond, covalent or non-covalent, is stable hydrolytically in the absence of an environment that promotes intentional cleavage of the bond.
一种aptamer-N-杂环卡宾
金属配合物共轭物(aptamer-NHCM共轭物)或aptamer-双N-杂环卡宾
金属配合物共轭物(aptamer-双NHCM共轭物)包括通过一个稳定的
水解键连接到N-杂环卡宾
金属配合物(NHCM)或双N-杂环卡宾
金属配合物(双NHCM)的aptamer。制备aptamer-NHCM共轭物时,所选的aptamer显示对细胞特异性受体的选择性结合,从而可以将细胞毒性NHCM定向到负责目标疾病(例如特定癌症类型)的细胞。制备aptamer-N-杂环卡宾
金属配合物共轭物的方法涉及向N-杂环卡宾
金属配合物安装一个偶联基,该偶联基可以与aptamer上的一个功能基特异性结合;该键,共价或非共价,稳定地在没有促进意图解离该键的环境中
水解。