通过脂酶催化化和RAFT聚合物合成聚合物-克林达胺
Masoud Zamani1, Dayron M Leyva Rodriguez2, Ziwen Zhang1
1Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY, 14260, USA.
Polymer
|September 2, 2025
概括
研究人员使用克林达米辛 (Clin) 开发了新型聚合物-抗生素结合物 (PAC). 这些PAC具有持续释放和强烈的抗菌活性,对Streptococcus mutans有多方面的应用.
科学领域:
- 聚合物化学
- 生物结合
- 提供抗菌药物
背景情况:
- 聚合物-抗生素结合物 (PAC) 与自由抗生素相比具有优势,包括修改的溶解性,持续释放和长时间的生物活性.
- 克林达米辛 (Clin) 是一种强效的,广泛的抗生素,具有多种医疗用途,但由于修改挑战,以前没有报告含有克林的PAC.
- 由于其多个反应性基组,因此很难对克林达米辛进行选择性修饰.
研究的目的:
- 开发一种高效和区域选择性的合成甲烯功能化克林达胺单体的方法.
- 通过可逆添加碎片链转移 (RAFT) 聚合,合成含有清水不溶性和水溶性PAC.
- 评估合成的PAC的结构特征,克林达胺素含量,持续释放行为和抗菌活性.
主要方法:
- 用于固定性脂酶作为一个生物催化剂,用于在一阶段反应中选择性合成甲基烯基功能化克林达米辛单体.
- 采用RAFT聚合制造克林达胺单体与2-甲基酸盐 (用于水溶性PAC) 或3-[(3-烯) 二甲基]酸盐 (用于水溶性PAC) 的共聚物.
- 使用1H核磁共振和凝透色谱来表征PAC结构和克林达含量;通过链延伸实验验证RAFT过程生物性;使用抑制区测试评估对Streptococcus mutans的抗菌活性.
主要成果:
- 通过固定脂酶成功合成了甲烯功能化的克林达胺单体.
- 含有高含量 (33-46%重量%) 清晰的水不可溶和水溶PAC.
- 证明了持续的克林达胺素释放和对Streptococcus mutans显著的抗菌活性.
结论:
- 提出了一种高效的合成各种含有克林达的PAC的方法.
- 合成的PAC具有持续释放和强大的抗菌性质.
- 这些新型抗菌剂具有各种抗菌应用的潜力.
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