高等学校化学学报 ›› 2024, Vol. 45 ›› Issue (2): 20230466.doi: 10.7503/cjcu20230466

• 高分子化学 • 上一篇    下一篇

内环化聚(β-氨基酯)的制备与生物物理性能

雍海洋, 李智立, 郭蕊, 周德重()   

  1. 西安交通大学化学工程与技术学院, 西安 710049
  • 收稿日期:2023-11-10 出版日期:2024-02-10 发布日期:2024-01-05
  • 通讯作者: 周德重 E-mail:dezhong.zhou@xjtu.edu.cn
  • 基金资助:
    国家自然科学基金(51903202)

Synthesis and Physiological Properties of Cyclized Poly( β -amino ester)s

YONG Haiyang, LI Zhili, GUO Rui, ZHOU Dezhong()   

  1. School of Chemical Engineering and Technology,Xi’an Jiaotong University,Xi’an 710049,China
  • Received:2023-11-10 Online:2024-02-10 Published:2024-01-05
  • Contact: ZHOU Dezhong E-mail:dezhong.zhou@xjtu.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(51903202)

摘要:

拓扑结构对聚合物性能具有重要影响. 本文通过调控聚合条件制备内环化聚(β-氨基酯)并探究其生物物理性能. 以三羟甲基丙烷三丙烯酸酯(TMPTA)和4-吗啉丙胺(MPA)为单体并控制其投料比及体系单体浓度, 利用迈克尔加成反应制备了两种内环化聚(β-氨基酯). 使用凝胶渗透色谱仪(GPC)、 核磁共振波谱仪(NMR)和原子力显微镜(AFM)等对内环化聚(β-氨基酯)的化学组成、 拓扑结构和生物物理性能进行表征与分析. 结果表明, 随着环化度的增加, 聚(β-氨基酯)对DNA压缩能力增强, 降解速率加快, 质子缓冲能力提高, 细胞毒性增大. 本文研究结果为制备和表征内环化聚(β-氨基酯)提供了新思路, 也为设计有效的基因递送载体提供了依据.

关键词: 拓扑结构, 内环化聚(β-氨基酯), 投料比, 生物物理性能

Abstract:

The topological structure of polymers has a significant impact on their properties. In this study, we synthesized cyclized poly(β-amino ester)s by adjusting the polymerization parameters and investigated their physiological properties. By utilizing trimethylolpropane triacrylate(TMPTA) and N-(3-Aminopropyl)morpholine(MPA) as monomers and varying their feed ratios and concentrations, two cyclized poly(β-amino ester)s were prepared through Michael addition reaction. The chemical composition, topological structure, and physiological properties of the cyclized poly(β-amino ester)s were characterized by gel permeation chromatography(GPC), nuclear magnetic resonance spectroscopy(NMR), and atomic force microscopy(AFM). The results showed that an increase in cyclization led to enhanced DNA condensation ability, faster degradation profiles, stronger proton buffering capacity, and higher cytotoxicity. These findings provide valuable insights into the preparation and characterization of cyclized poly(β-amino ester)s, shedding light on the design of reliable gene delivery vectors.

Key words: Topological structure, Cyclized poly(β-amino ester), Feed ratio, Physiological property

中图分类号: 

TrendMD: