| Autor: |
Groover KE; Department of Molecular Biosciences, The University of Texas at Austin, Austin, Texas 78712, United States., Randall JR; Department of Molecular Biosciences, The University of Texas at Austin, Austin, Texas 78712, United States., Davies BW; Department of Molecular Biosciences, The University of Texas at Austin, Austin, Texas 78712, United States.; John Ring LaMontagne Center for Infectious Diseases, The University of Texas at Austin, Austin, Texas 78712, United States. |
| Jazyk: |
angličtina |
| Zdroj: |
ACS infectious diseases [ACS Infect Dis] 2024 Jun 14; Vol. 10 (6), pp. 2151-2160. Date of Electronic Publication: 2024 May 07. |
| DOI: |
10.1021/acsinfecdis.4c00142 |
| Abstrakt: |
Antimicrobial peptides (AMPs) are presented as potential scaffolds for antibiotic development due to their desirable qualities including broad-spectrum activity, rapid action, and general lack of susceptibility to current resistance mechanisms. However, they often lose antibacterial activity under physiological conditions and/or display mammalian cell toxicity, which limits their potential use. Identification of AMPs that overcome these barriers will help develop rules for how this antibacterial class can be developed to treat infection. Here we describe the development of our novel synthetic AMP, from discovery through in vivo application. Our evolved AMP, DTr18-dab, has broad-spectrum antibacterial activity and is nonhemolytic. It is active against planktonic bacteria and biofilm, is unaffected by colistin resistance, and importantly is active in both human serum and a Galleria mellonella infection model. Several modifications, including the incorporation of noncanonical amino acids, were used to arrive at this robust sequence. We observed that the impact on antibacterial activity with noncanonical amino acids was dependent on assay conditions and therefore not entirely predictable. Overall, our results demonstrate how a relatively weak lead can be developed into a robust AMP with qualities important for potential therapeutic translation. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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