Thermoresponsive giant biohybrid amphiphiles

被引:57
作者
Lavigueur, Christine [2 ]
Garcia, Jordi Gonzalez [2 ]
Hendriks, Linda [2 ]
Hoogenboom, Richard [2 ]
Cornelissen, Jeroen J. L. M. [1 ]
Nolte, Roeland J. M. [2 ]
机构
[1] Univ Twente, Lab Biomol Nanotechnol, MESA Inst Nanotechnol, NL-7500 AE Enschede, Netherlands
[2] Radboud Univ Nijmegen, Inst Mol & Mat, Dept Organ Chem, NL-6500 GL Nijmegen, Netherlands
基金
加拿大自然科学与工程研究理事会;
关键词
TRANSFER RADICAL POLYMERIZATION; COFACTOR RECONSTITUTION; CYCLOADDITION REACTION; AGGREGATION BEHAVIOR; RAFT POLYMERIZATION; BLOCK-COPOLYMERS; CLICK CHEMISTRY; SMART POLYMERS; PROTEIN; MICROGELS;
D O I
10.1039/c0py00229a
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
A series of random copolymers of various lengths was prepared by atom transfer radical polymerisation (ATRP) using two acrylate monomers with short pendant ethylene glycol side chains (ethylene glycol methyl ether acrylate, EGMEA, and methoxy ethoxy ethyl acrylate, MEEA). The end group was converted to an azide to enable bioconjugation through copper-catalysed azide-alkyne cycloaddition (CuAAC). All polymers were found to be thermoresponsive, with a cloud point between 25 and 35 degrees C depending on their molecular weight. They were conjugated to enhanced green fluorescent protein (EGFP) functionalised with a single alkyne moiety, as seen by fast performance liquid chromatography (FPLC) and gel electrophoresis (SDS-PAGE). The resulting biohybrid amphiphiles were thermoresponsive. Dynamic light scattering (DLS) and transmission electron microscopy (TEM) were used to study their self-assembly at elevated temperatures, and they were found to form spherical structures with a diameter of approximately 60 nm upon slow heating.
引用
收藏
页码:333 / 340
页数:8
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