Synthesis, Characterization, and Antimicrobial Properties of Peptides Mimicking Copolymers of Maleic Anhydride and 4-Methyl-1-pentene
作者:Marian Szkudlarek、Elisabeth Heine、Helmut Keul、Uwe Beginn、Martin Möller
DOI:10.3390/ijms19092617
日期:——
antimicrobial peptides were obtained via synthesis of an alternating copolymer of maleic anhydride and 4-methyl-1-pentene. The obtained copolymer was modified by grafting with 3-(dimethylamino)-1-propylamine (DMAPA) and imidized in a one-pot synthesis. The obtained copolymer was modified further to yield polycationic copolymers by means of quaternization with methyl iodide and dodecyl iodide, as well as
通过合成马来酸酐和 4-甲基-1-戊烯的交替共聚物,获得了具有模仿天然抗菌肽的强抗菌性能的合成两亲性共聚物。所得共聚物通过接枝3-(二甲氨基)-1-丙胺(DMAPA)进行改性,并在一锅合成中进行酰亚胺化。通过用甲基碘和十二烷基碘进行季铵化,以及通过用它们两者依次进行季铵化,对所得共聚物进行进一步改性,得到聚阳离子共聚物。测试了所得共聚物对大肠杆菌、铜绿假单胞菌、表皮葡萄球菌和金黄色葡萄球菌的抗菌性能。两种测试的季铵化共聚物对革兰氏阴性大肠杆菌的活性均高于对革兰氏阳性金黄色葡萄球菌的活性。当针对大肠杆菌进行测试时,用两种碘化物改性的共聚物效果最好,并且比较所有三种共聚物,也表现出针对金黄色葡萄球菌的最佳效果。此外,它显示出区分哺乳动物细胞和细菌细胞壁的(有限)选择性。以摩尔为基础与以重量为基础比较Nisin对革兰氏阳性菌的最小抑菌浓度(MIC),Nisin与共聚物的效果差异明显较低。