New Star-Shaped Carriers Composed of beta-Cyclodextrin Cores and Disulfide-Linked Poly(glycidyl methacrylate) Derivative Arms with Plentiful Flanking Secondary Amine and Hydroxyl Groups for Highly Efficient Gene Delivery

作者：Hu, Y.; Zhu, Y.; Yang, W. T.; Xu, F. J.^*

来源：ACS Applied Materials & Interfaces, 2013, 5(3): 703-712.

DOI：10.1021/am302249x

• gene delivery
• bioreducible vector
• PGEA
• beta-cyclodextrin
• ATRP

The biocleavable star-shaped vectors (CD-SS-PGEAs) consisting of nonionic beta-cyclodextrin (beta-CD) cores and disulfide-linked low-molecular-weight poly(glycidyl methacrylate) (PGMA) derivative arms with plentiful flanking secondary amine and hydroxyl groups were successfully proposed for highly efficient gene delivery. A simple two-step method was first adopted to introduce reduction-sensitive disulfide-linked initiation sites of atom transfer radical polymerization (ATRP) onto beta-CD cores. The disulfide-linked PGMA arms prepared subsequently via ATRP were functionalized via the ring-opening reaction with ethanolamine (EA) to produce the cationic EA-functionalized PGMA (PGEA) arms with plentiful secondary amine and nonionic hydroxyl units. The cationic PGEA arms can be readily cleavable from the beta-CD cores under reducible conditions. Such biocleavable star-shaped CD-SS-PGEA vectors possessed the good pDNA condensation ability, low cytotoxicity, and efficient gene delivery ability.

• 出版日期2013-2-13
• 单位化工资源有效利用国家重点实验室; 北京化工大学