Preparation of microparticles composed of amphiphilic poly(γ-glutamic acid) through hydrophobic interactions

Preparation of microparticles composed of amphiphilic poly(γ-glutamic acid) through hydrophobic interactions
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通过疏水相互作用制备两亲性聚(γ-谷氨酸)微粒

DOI:
10.1038/pj.2013.74
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发表时间:
2013
期刊:
影响因子:
2.8
通讯作者:
Akashi
Akashi
中科院分区:
化学3区
文献类型:
--
作者:
Schulte;Moeller;Akashi

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以1-乙基-3-(3-二甲氨基丙基)-碳二亚胺(EDC)为偶联剂,合成了一种以聚γ-谷氨酸(γ-PGA)为亲水性主链,十二胺(DOA)为疏水性侧链的两亲性接枝共聚物(γ-PGA-DOA)。通过调节反应体系中DOA和EDC的投加量,可以化学计量地控制接枝率。接枝率为55%的γ-PGA-DOA在水溶液中通过疏水相互作用自组装形成微粒(MP;直径为13±3 μm)。这些MPs具有功能性羧基,并可进一步与药物、蛋白质和肽等化合物修饰,因此作为疫苗载体具有很大的潜力。
A novel amphiphilic graft copolymer composed of poly (γ-glutamic acid)(γ-PGA) as a hydrophilic backbone and dodecylamine (DOA) as a hydrophobic side chain (γ-PGA-DOA) was successfully synthesized by employing 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide (EDC) as the coupling reagent. The grafting degree was stoichiometrically controlled by adjusting the feeding amounts of DOA and EDC in the reaction system. γ-PGA-DOA, with a grafting degree of 55%, self-assembled via hydrophobic interactions and formed microparticles (MPs; diameter of 13±3 μm) in an aqueous solution. These MPs possessed functional carboxylic groups and could be further modified with compounds such as drugs, proteins and peptides, and thus have great potential as vaccine carriers.
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