Development of Antibiotic Activity Profile Screening for the Classification and Discovery of Natural Product Antibiotics

SummaryDespite recognition of the looming antibiotic crisis by healthcare professionals, the number of new antibiotics reaching the clinic continues to decline sharply. This study aimed to establish an antibiotic profiling strategy using a panel of clinically relevant bacterial strains to create unique biological fingerprints for all major classes of antibiotics. Antibiotic mode of action profile (BioMAP) screening has been shown to effectively cluster antibiotics by structural class based on these fingerprints. Using this approach, we have accurately predicted the presence of known antibiotics in natural product extracts and have discovered a naphthoquinone-based antibiotic from our marine natural product library that possesses a unique carbon skeleton. We have demonstrated that bioactivity fingerprinting is a successful strategy for profiling antibiotic lead compounds and that BioMAP can be applied to the discovery of new natural product antibiotics leads.

Graphical AbstractFigure optionsDownload full-size imageDownload high-quality image (165 K)Download as PowerPoint slideHighlights► Antibiotics can be classified by structural class based on biological fingerprints ► BioMAP predicts the presence of known compounds in natural product extracts ► BioMAP reveals compounds with unique antibacterial properties ► A naphthoquinone antibiotic with a unique carbon skeleton has been discovered