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Adv Healthc Mater:抗菌肽/GO完美解决耐药细菌

2019-09-08 不详 网络

抗菌肽(AMPs)有望从根本上解决耐药细菌的破坏性威胁。然而,AMP的缺点(例如,细胞膜穿透效率差)严重阻碍了其临床应用。本研究中,研究人员实现了蜂毒肽(作为代表性AMP)和石墨烯或氧化石墨烯(Gra或GO)纳米片的混合复合物的合理设计,以增强抗菌能力。检测显示,与原始蜂毒肽相比,特异设计的AMP-Gra(/ GO)复合物在跨膜穿孔中的效率显著提高,肽的阈值工作浓度降低了十倍以上;此外,它对革兰氏

抗菌肽(AMPs)有望从根本上解决耐药细菌的破坏性威胁。然而,AMP的缺点(例如,细胞膜穿透效率差)严重阻碍了其临床应用。本研究中,研究人员实现了蜂毒肽(作为代表性AMP)和石墨烯或氧化石墨烯(Gra或GO)纳米片的混合复合物的合理设计,以增强抗菌能力。

检测显示,与原始蜂毒肽相比,特异设计的AMP-Gra(/ GO)复合物在跨膜穿孔中的效率显著提高,肽的阈值工作浓度降低了十倍以上;此外,它对革兰氏阴性和革兰氏阳性细菌的抗菌活性提高了20倍。这种改善归因于纳米片和蜂毒肽的协同插入,因为它们之间的抗菌机制相似,并且进一步受复合物的结构因素的调节,包括片间距和Gra /GO片的表面功能化等。

总之,这些结果为使用纳米技术设计AMP以提高抗菌性能提供了实用指南,特别是基于Gra/GO纳米片的靶向功能化。

原始出处:

Lu X, Liu J, et al., Designing Melittin-Graphene Hybrid Complexes for Enhanced Antibacterial Activity. Adv Healthc Mater. 2019 May;8(9):e1801521. doi: 10.1002/adhm.201801521. Epub 2019 Mar 13.

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