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Title: | Designing Simple Lipidated Lysines: Bifurcation Imparts Selective Antibacterial Activity |
Authors: | Ghosh, Chandradhish Konai, Mohini Mohan Sarkar, Paramita Samaddar, Sandip Haldar, Jayanta |
Keywords: | Pharmacology & Pharmacy antibiotics antimicrobial resistance biofilms drug design peptidomimetics Host-Defense Peptides Antimicrobial Peptides Small Molecules Peptoid Mimics Resistance Infections Membranes Peptidomimetics Lipopeptides Derivatives |
Issue Date: | 2016 |
Publisher: | Wiley-V C H Verlag Gmbh |
Citation: | Ghosh, C.; Konai, M. M.; Sarkar, P.; Samaddar, S.; Haldar, J., Designing Simple Lipidated Lysines: Bifurcation Imparts Selective Antibacterial Activity. Chemmedchem 2016, 11 (21), 2367-2371 http://dx.doi.org/10.1002/cmdc.201600400 Chemmedchem 11 21 |
Abstract: | In the global effort to thwart antimicrobial resistance, lipopeptides are an important class of antimicrobial agents, especially against Gram-negative infections. In an attempt to circumvent their synthetic complexities, we designed simple membrane-active agents involving only one amino acid and two lipid tails. Herein we show that the use of two short lipid tails instead of a single long one significantly increases selective antibacterial activity. This study yielded several selective antibacterial compounds, and investigations into the properties of this compound class were conducted with the most active compound. Fluorescence spectroscopic studies revealed the capacity of the representative compound to cause depolarization and permeabilization of bacterial cell membranes. This membrane-active nature of the compound imparts superior activity against persister cells, biofilms, and planktonic cells. Topical application of the compound decreased bacterial burden in mice inflicted with burn-infections caused by Acinetobacter baumannii. We anticipate that the design principles described herein will direct the development of several antimicrobial agents of clinical importance. |
Description: | Open Access (Accepted Manuscript) |
URI: | https://libjncir.jncasr.ac.in/xmlui/10572/2299 |
ISSN: | 1860-7179 |
Appears in Collections: | Research Papers (Jayanta Haldar) |
Files in This Item:
File | Description | Size | Format | |
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78-manuscript.pdf | 992.97 kB | Adobe PDF | View/Open |
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