A simple methodology for the synthesis of heterotelechelic protein-polymer-biomolecule conjugates
作者:Jingquan Liu、Huiyun Liu、Volga Bulmus、Lei Tao、Cyrille Boyer、Thomas P. Davis
DOI:10.1002/pola.23902
日期:2010.3.15
A synthetic protocol for the preparation of hetero‐biofunctional protein–polymer conjugates is described. A chain transfer agent, S,S‐bis (α,α′‐dimethyl‐α″‐acetic acid) trithiocarbonate was functionalized with α,ω‐pyridyl disulfide (PDS) groups, Subsequently, one of the PDS groups was covalently attached to bovine serum albumin (BSA) at the specific free thiol group on the cysteine residue through
描述了用于制备异生物功能蛋白-聚合物共轭物的合成方案。用α,ω-吡啶基二硫化物(PDS)基团官能化链转移剂S,S bis(α,α'-二甲基-α″-乙酸)三硫代碳酸酯,然后将其中一个PDS基团共价连接到牛血清白蛋白(BSA)通过二硫键在半胱氨酸残基上的特定游离巯基上。第二个PDS组保持完好无损,因为发现它无法实现进一步的BSA功能化。然后使用BSA宏可逆加成碎片链转移(RAFT)剂通过低聚(乙二醇)丙烯酸酯和N的原位聚合制备BSA聚合物共轭物。-(2-羟丙基)甲基丙烯酰胺,在环境介质中使用4,4'-偶氮双[2,9-咪唑啉-2-乙基]丙烷]盐酸盐。十二烷基硫酸钠聚丙烯酰胺凝胶电泳(SDS-PAGE)证实原位聚合发生在附着有RAFT试剂的蛋白质表面,并且发现BSA-聚合物共轭物的分子量随单体转化率和聚合时间的增加而增加。聚合后,其余的PDS末端基团随后用于通过二硫键将硫代胆固醇和荧光团若丹明B连