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Gannett C, Tiller K, Briganti AJ, Brown AM, Weger-Lucarelli J, Lowell AN. Forgotten Natural Products: Semisynthetic Development of Blasticidin S As an Antibiotic Lead. ACS Med Chem Lett 2024; 15:362-368. [PMID: 38505852 PMCID: PMC10945559 DOI: 10.1021/acsmedchemlett.3c00527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 01/29/2024] [Accepted: 02/20/2024] [Indexed: 03/21/2024] Open
Abstract
Forgotten natural products offer value as antimicrobial scaffolds, providing diverse mechanisms of action that complement existing antibiotic classes. This study focuses on the derivatization of the cytotoxin blasticidin S, seeking to leverage its unique ribosome inhibition mechanism. Despite its complex zwitterionic properties, a selective protection and amidation strategy enabled the creation of a library of blasticidin S derivatives including the natural product P10. The amides exhibited significantly increased activity against Gram-positive bacteria and enhanced specificity for pathogenic bacteria over human cells. Molecular docking and computational property analysis suggested variable binding poses and indicated a potential correlation between cLogP values and activity. This work demonstrates how densely functionalized forgotten antimicrobials can be straightforwardly modified, enabling the further development of blasticidin S derivatives as lead compounds for a novel class of antibiotics.
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Affiliation(s)
- Cole Gannett
- Department
of Chemistry, Virginia Polytechnic Institute
and State University (Virginia Tech), Blacksburg, Virginia 24061, United States
- Center
for Emerging, Zoonotic, and Arthropod-borne Pathogens, Virginia Polytechnic Institute and State University
(Virginia Tech), Blacksburg, Virginia 24061, United States
| | - Kateland Tiller
- Center
for Emerging, Zoonotic, and Arthropod-borne Pathogens, Virginia Polytechnic Institute and State University
(Virginia Tech), Blacksburg, Virginia 24061, United States
- Department
of Biomedical Sciences and Pathobiology, Virginia Tech, VA-MD Regional College of Veterinary Medicine, Blacksburg, Virginia 24061, United States
| | - Anthony J. Briganti
- Department
of Biochemistry, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Anne M. Brown
- Center
for Emerging, Zoonotic, and Arthropod-borne Pathogens, Virginia Polytechnic Institute and State University
(Virginia Tech), Blacksburg, Virginia 24061, United States
- Department
of Biochemistry, Virginia Tech, Blacksburg, Virginia 24061, United States
- Research
and Informatics, Virginia Tech, Blacksburg, Virginia 24061, United States
- Interdisciplinary
Program in Genetics, Bioinformatics, and Computational Biology, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - James Weger-Lucarelli
- Center
for Emerging, Zoonotic, and Arthropod-borne Pathogens, Virginia Polytechnic Institute and State University
(Virginia Tech), Blacksburg, Virginia 24061, United States
- Department
of Biomedical Sciences and Pathobiology, Virginia Tech, VA-MD Regional College of Veterinary Medicine, Blacksburg, Virginia 24061, United States
| | - Andrew N. Lowell
- Department
of Chemistry, Virginia Polytechnic Institute
and State University (Virginia Tech), Blacksburg, Virginia 24061, United States
- Center
for Emerging, Zoonotic, and Arthropod-borne Pathogens, Virginia Polytechnic Institute and State University
(Virginia Tech), Blacksburg, Virginia 24061, United States
- Faculty of
Health Sciences, Virginia Polytechnic Institute
and State University (Virginia Tech), Blacksburg, Virginia 24061, United States
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