Antimicrobial and cell-compatible surface-attached polymer networks – how the correlation of chemical structure to physical and biological data leads to a modified mechanism of action
作者:Peng Zou、Dougal Laird、Esther K. Riga、Zhuoling Deng、Franziska Dorner、Heidi-Rosalia Perez-Hernandez、D. Lorena Guevara-Solarte、Thorsten Steinberg、Ali Al-Ahmad、Karen Lienkamp
DOI:10.1039/c5tb00906e
日期:——
IEP, the higher the antimicrobial activity. The cell compatibility of the networks increased with increasing swellability and apparent surface energy, and decreased with increasing charge density. The data corroborates that the mechanism of action of antimicrobial polymer surfaces depends on at least two mechanistic steps, one of which is hydrophobicity-driven and the other charge related. Therefore,
我们提出了一种基于光诱导硫醇-烯化学的合成平台,通过该平台可以轻松地获得抗菌聚氧氧冰片烯的表面附着网络(所谓的抗菌肽的聚合物合成模拟物,SMAMPs)。通过系统地改变疏水性和电荷密度,获得了具有高抗菌活性和出色的细胞相容性的表面附着的聚合物网络。对于具有恒定电荷密度的均聚物网络,随着疏水性的增加(即降低的可溶胀性和表观表面能),抗菌活性会系统地提高。无论电荷密度如何,所有网络的抗菌活性均与酸常数pK和等电点(IEP)相关-pK和IEP越低,抗菌活性就越高。网络的细胞相容性随可溶胀性和表观表面能的增加而增加,而随电荷密度的增加而降低。数据证实了抗微生物聚合物表面的作用机理取决于至少两个机械步骤,其中一个是疏水性驱动的,另一个与电荷有关。因此,我们建议采用电荷驱动和疏水驱动步骤的改进的机械模型。对于仅在疏水性上变化的抗菌网络,表面和溶液中的抗菌活性也相关-溶液中的活性越高,表面上的活性就越高。