Synthesis of the Hemoglobin-Conjugated Polymer Micelles by Thiol Michael Addition Reactions
作者:Yanxin Qi、Taihang Li、Yupeng Wang、Xing Wei、Bin Li、Xuesi Chen、Zhigang Xie、Xiabin Jing、Yubin Huang
DOI:10.1002/mabi.201500460
日期:2016.6
Amphiphilic triblock copolymers mPEG‐b‐PMAC‐b‐PCL are synthesized using methoxyl poly(ethylene glycol), cyclic carbonic ester monomer including acryloyl group, and ε‐caprolactone. Copolymers are self‐assembled into core–shell micelles in aqueous solution. Thiolated hemoglobin (Hb) is conjugated with micelles sufficiently through thiol Michael addition reaction to form hemoglobin nanoparticles (HbNs)
使用甲氧基聚乙二醇,包括丙烯酰基的环状碳酸酯单体和ε-己内酯合成两亲三嵌段共聚物mPEG-b-PMAC-b-PCL。共聚物在水溶液中自组装成核-壳胶束。硫醇化的血红蛋白(Hb)通过硫醇迈克尔加成反应与胶束充分结合,形成直径200 nm的血红蛋白纳米颗粒(HbNs)。X射线光电子能谱进一步证实了Hb在胶束表面的结合。共聚物胶束与Hb的进料比为1:3将导致最高的血红蛋白负载效率36.7 wt%。紫外线结果表明,在Hb与聚合物胶束结合后,HbNs的气体传输能力得以很好地保留。此外,所获得的HbNs在体外对血液成分没有明显的有害作用。因此,该系统作为开发为氧载体的候选药物之一可能具有巨大的潜力,并为蛋白质药物的改性提供参考。