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<dc:title xml:lang="en">Synergistic antimicrobial peptides in action : biophysical insights into membrane distribution, barriers, and intracellular responses by PGLa and magainin 2</dc:title>
<dcterms:alternative xml:lang="fr">Peptides antimicrobiens synergiques en action : aperçu biophysique de la distribution membranaire, des barrières et des réponses intracellulaires du PGLa et de la magainine 2</dcterms:alternative>
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<dc:subject xml:lang="en">Antimicrobial peptides</dc:subject>
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<dcterms:abstract xml:lang="fr">Les peptides antimicrobiens offrent une alternative prometteuse et efficace pour surmonter la résistance aux antibiotiques, car ils ciblent les cellules bactériennes par le biais de multiples mécanismes moins susceptibles d'induire une résistance. Cette recherche se concentre sur deux peptides synergiques, le PGLa et la magainine 2. Les travaux examinent la distribution des peptides à la surface des membranes lipidiques, qui a été analysée à l'aide d'un procédé d'extinction de fluorescence. De plus, des expériences de libération de colorant ont été utilisées pour étudier l'influence de différentes compositions lipidiques sur les effets synergiques associés à la membrane. En outre, une méthode d'analyse du comportement intracellulaire des peptides et de leurs effets sur le métabolisme bactérien a été mise au point sur la base de la création d'une base de données de métabolites à l'aide de la RMN HR-MAS.</dcterms:abstract>
<dcterms:abstract xml:lang="en">Antimicrobial peptides offer a promising and effective alternative to overcome antibiotic resistance, as they target bacterial cells through multiple mechanisms that are less likely to induce resistance. This research focuses on the two synergistic peptides PGLa and magainin 2. The work examines the distribution of peptides on the surface of lipid membranes, which was analyzed using fluorescence quenching. In addition, dye release experiments were used to investigate the influence of different lipid compositions on membrane-associated synergistic effects. Furthermore, a method for analyzing the intracellular behavior of the peptides and their effects on bacterial metabolism was established based on the creation of a metabolite database using HR-MAS-NMR.</dcterms:abstract>
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