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- W2758793032 abstract "The peptides containing β- and γ-amino acids, LA-Lys-PEA, P1; LA-Lys-β3,3-Ac6c-PEA, P2; LA-Orn-β3,3-Ac6c-PEA, P3; LA-Lys-Gpn-PEA, P4; LA-Orn-Gpn-PEA, P5; LA-Lys-γ4-Phe-PEA, P6, LA-γ4-Leu-Lys-PEA, P7 and LA-β3,3-Pip(Ac)-Lys-PEA, P8 were synthesized, characterized and evaluated against Gram-positive and Gram-negative bacteria. Among all, peptides P2, P3, P4 and P5 exhibited potent activity (MIC 6.25μM) against S. aureus MTCC 737 and P. aeruginosa MTCC 424. In order to understand the efficacy of peptides and mechanism of action, time kill kinetics and fluorescence microscopic studies were performed against S. aureus and P. aeruginosa for the peptides P2, P3, P4 and P5. P4 took half time to show the bactericidal effect on P. aeruginosa and S. aureus in comparison to P2 at their 2x MICs. Fluorescence microscopic studies suggested that peptides P2 and P4 both killed the bacteria via membrane disruption. Further, P4 exhibited lowest haemolytic activity among active peptides and negligible cytotoxic activity against human cancer cell lines A-549, PC-3 and HCT-116 at its MIC." @default.
- W2758793032 created "2017-10-06" @default.
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- W2758793032 date "2017-11-01" @default.
- W2758793032 modified "2023-10-14" @default.
- W2758793032 title "Short hybrid peptides incorporating β- and γ-amino acids as antimicrobial agents" @default.
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- W2758793032 doi "https://doi.org/10.1016/j.peptides.2017.09.016" @default.
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