Abstract:
:Enveloped viruses such as SARS-CoV-2 frequently have a highly infectious nature and are considered effective natural delivery systems exhibiting high efficiency and specificity. Since simultaneously enhancing the activity and selectivity of lipopeptides is a seemingly unsolvable problem for conventional chemistry and pharmaceutical approaches, we present a biomimetic strategy to construct lipopeptide-based mimics of viral architectures and infections to enhance their antimicrobial efficacy while avoiding side effects. Herein, a surface-nanoengineered antimicrobial liposome (SNAL) is developed with the morphological features of enveloped viruses, including a moderate size range, lipid-based membrane structure, and highly lipopeptide-enriched bilayer surface. The SNAL possesses virus-like infection to bacterial cells, which can mediate high-efficiency and high-selectivity bacteria binding, rapidly attack and invade bacteria via plasma membrane fusion pathway, and induce a local "burst" release of lipopeptide to produce irreversible damage of cell membrane. Remarkably, viral mimics are effective against multiple pathogens with low minimum inhibitory concentrations (1.6-6.3 μg mL-1), high bactericidal efficiency of >99% within 2 h, >10-fold enhanced selectivity over free lipopeptide, 99.8% reduction in skin MRSA load after a single treatment, and negligible toxicity. This bioinspired design has significant potential to enhance the therapeutic efficacy of lipopeptides and may create new opportunities for designing next-generation antimicrobials.
journal_name
Bioact Materjournal_title
Bioactive materialsauthors
Shi Y,Feng X,Lin L,Wang J,Chi J,Wu B,Zhou G,Yu F,Xu Q,Liu D,Quan G,Lu C,Pan X,Cai J,Wu Cdoi
10.1016/j.bioactmat.2021.02.038keywords:
["Activity and selectivity","Antimicrobial lipopeptides","Liposomes","Virus-inspired mimics","Virus-like infections"]subject
Has Abstractpub_date
2021-10-01 00:00:00pages
3207-3217issue
10issn
2452-199Xpii
S2452-199X(21)00100-6journal_volume
6pub_type
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