Revolutionizing Antimicrobial Biomaterials: Integrating an Enzyme Degradation-Resistant Sequence into Self-Assembled Nanosystems to Overcome Stability Limitations of Peptide-Based Drugs

IF 17.2 1区 工程技术 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY
Weikang Yu, Xu Guo, Qingrui Li, Xuefeng Li, Yingxin Wei, Changxuan Shao, Licong Zhang, Jiajun Wang, Anshan Shan
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Abstract

Incorporating enzyme-resistant peptide sequences into self-assembled nanosystems is a promising strategy to enhance the stability and versatility of peptide-based antibacterial drugs, aiming to replace ineffective antibiotics. By combining newly designed enzymatic-resistant sequences with synthetically derived compounds bearing single, double, triple, or quadruple aromatic rings. A series of nanoscale antimicrobial self-assembled short peptides for the purpose of combating bacterial infections are generated. Nap* (Nap–DNal–Nal–Dab–Dab–NH2, where Nap represents the 1-naphthylacetyl group) possesses the greatest clinical potential (GMSI = 23.96) among the peptides in this series. At high concentrations in an aqueous environment, Nap* spontaneously generates nanofibers to capture bacteria and prevent their evasion, exhibiting broad-spectrum antimicrobial effects and exceptional biocompatibility. In the presence of physiological salt ions and serum, the antimicrobial agent exhibits strong effectiveness and retains impressive resistance even when exposed to high levels of proteases (trypsin, chymotrypsin, pepsin). Nap* exhibits negligible in vivo toxicity and effectively alleviates systemic bacterial infections in mice. Mechanistically, Nap* initially captures bacteria and induces bacterial cell death primarily through membrane dissolution, achieved by multiple synergistic mechanisms. In summary, these advances have the potential to greatly expedite the clinical evolution of nanomaterials based on short peptides combined with naphthyl groups and foster the development of peptides integrated with self-assembled systems in this domain.

Graphical Abstract

Abstract Image

革新抗菌生物材料:将抗酶降解序列整合到自组装纳米系统中,克服肽类药物的稳定性限制
在自组装纳米系统中加入抗酶多肽序列是提高多肽类抗菌药物稳定性和多功能性的一种有前途的策略,其目的是取代无效的抗生素。通过将新设计的抗酶序列与带有单环、双环、三环或四环芳香环的合成衍生化合物相结合,一系列纳米级抗菌药物应运而生。产生了一系列纳米级抗菌自组装短肽,用于抗击细菌感染。在这一系列肽中,Nap*(Nap-DNal-Nal-Dab-Dab-NH2,其中 Nap 代表 1-萘乙酰基)具有最大的临床潜力(GMSI = 23.96)。在水环境中浓度较高时,Nap*会自发生成纳米纤维,捕捉细菌并防止其逃逸,从而表现出广谱抗菌效果和优异的生物相容性。在生理盐离子和血清存在的情况下,这种抗菌剂表现出强大的功效,即使暴露于高浓度的蛋白酶(胰蛋白酶、糜蛋白酶、胃蛋白酶)中,也能保持令人印象深刻的抗性。Nap* 的体内毒性可忽略不计,并能有效缓解小鼠的全身性细菌感染。从机理上讲,Nap* 最初捕获细菌,并主要通过膜溶解诱导细菌细胞死亡,这是通过多种协同机制实现的。总之,这些进展有可能大大加快基于与萘基结合的短肽的纳米材料的临床发展,并促进这一领域中与自组装系统集成的肽的开发。
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来源期刊
CiteScore
18.70
自引率
11.20%
发文量
109
期刊介绍: Advanced Fiber Materials is a hybrid, peer-reviewed, international and interdisciplinary research journal which aims to publish the most important papers in fibers and fiber-related devices as well as their applications.Indexed by SCIE, EI, Scopus et al. Publishing on fiber or fiber-related materials, technology, engineering and application.
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