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Hostetler MA, Smith C, Nelson S, Budimir Z, Modi R, Woolsey I, Frerk A, Baker B, Gantt J, Parkinson EI. Synthetic Natural Product Inspired Cyclic Peptides. ACS Chem Biol 2021; 16:2604-2611. [PMID: 34699170 PMCID: PMC8610019 DOI: 10.1021/acschembio.1c00641] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
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Natural products
are a bountiful source of bioactive molecules.
Unfortunately, discovery of novel bioactive natural products is challenging
due to cryptic biosynthetic gene clusters, low titers, and arduous
purifications. Herein, we describe SNaPP (Synthetic Natural Product
Inspired Cyclic Peptides), a method for identifying
NP-inspired bioactive peptides. SNaPP expedites bioactive molecule
discovery by combining bioinformatics predictions of nonribosomal
peptide synthetases with chemical synthesis of the predicted natural
products (pNPs). SNaPP utilizes a recently discovered cyclase, the
penicillin binding protein-like cyclase, as the lynchpin for the development
of a library of head-to-tail cyclic peptide pNPs. Analysis of 500
biosynthetic gene clusters allowed for identification of 131 novel
pNPs. Fifty-one diverse pNPs were synthesized using solid phase peptide
synthesis and solution-phase cyclization. Antibacterial testing revealed
14 pNPs with antibiotic activity, including activity against multidrug-resistant
Gram-negative bacteria. Overall, SNaPP demonstrates the power of combining
bioinformatics predictions with chemical synthesis to accelerate the
discovery of bioactive molecules.
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Affiliation(s)
- Matthew A. Hostetler
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Chloe Smith
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Samantha Nelson
- Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, Indiana 47907, United States
| | - Zachary Budimir
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Ramya Modi
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Ian Woolsey
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Autumn Frerk
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Braden Baker
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Jessica Gantt
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Elizabeth I. Parkinson
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
- Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, Indiana 47907, United States
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