Synthesis of cleavable multi-functional mikto-arm star polymer by RAFT polymerization: example of an anti-cancer drug 7-ethyl-10-hydroxycamptothecin(SN-38) as functional moiety

查看全文 作　　者：WEI [1,2]XiaoHu;GUNATILLAKE Pathiraja [2]A;MOAD [2]Graeme;RIZZARDO [2]Ezio;ROSSELGONG [2]Julien;YANG [1]WanTai;THANG San [2]H.

机构地区：[1]College of Materials Science and Engineering, Beijing University of Chemical Technology;[2]Materials Science and Engineering, The Commonwealth Scientific and Industrial Research Organisation(CSIRO)

出　　处：《Science China Chemistry》索引2014年第57卷第7期,共7页

基　　金：the China Scholarship Council for partial financial support 摘　　要：Multi-functional mikto-arm star polymers containing three different arms[hydrophilic,SN-38-P(OEGMA8?9)11,cationizable,SN-38-P(DMAEMA)38 and hydrophobic,SN-38-P(BMA)26]were prepared by RAFT polymerization via an arm-first approach using a cleavable cross-linker.The star polymers were cleaved to the linear arms with tributylphosphine as a reducing agent.The decrease in molecular weight observed is consistent with the initial stars having approximately five arms.Blue fluorescence was observed when a solution of mikto-arm star was irradiated under a 365 nm light proving the retention of the SN-38moiety during star formation by RAFT polymerization.Thus these polymer-drug conjugates can be considered as potential delivery vehicles for cancer therapy.The P(DMAEMA)arms can be quaternized using iodomethane,allowing star polymers to bind negatively charged small interfering RNA(siRNA)and potentially be used as a carrier for that material. 关键词：RAFT聚合星形聚合物抗癌药物多功能羟基喜树碱反应合成裂解 DMAEMA

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Synthesis of cleavable multi-functional mikto-arm star polymer by RAFT polymerization: example of an anti-cancer drug 7-ethyl-10-hydroxycamptothecin(SN-38) as functional moiety

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