Counter-ion effect on antistaphylococcal activity and cytotoxicity of selected antimicrobial peptides

In view of an appreciable increase in resistance of Staphylococcus aureus to the conventional antibiotics, it is desired to develop new effective drugs. Antimicrobial peptides (AMPs) seem to be attractive candidates. In general, AMPs samples used for in vitro studies consist of a peptide, counter-io...

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Veröffentlicht in:Amino acids 2018-05, Vol.50 (5), p.609-619
Hauptverfasser: Sikora, Karol, Jaśkiewicz, Maciej, Neubauer, Damian, Bauer, Marta, Bartoszewska, Sylwia, Barańska-Rybak, Wioletta, Kamysz, Wojciech
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container_end_page 619
container_issue 5
container_start_page 609
container_title Amino acids
container_volume 50
creator Sikora, Karol
Jaśkiewicz, Maciej
Neubauer, Damian
Bauer, Marta
Bartoszewska, Sylwia
Barańska-Rybak, Wioletta
Kamysz, Wojciech
description In view of an appreciable increase in resistance of Staphylococcus aureus to the conventional antibiotics, it is desired to develop new effective drugs. Antimicrobial peptides (AMPs) seem to be attractive candidates. In general, AMPs samples used for in vitro studies consist of a peptide, counter-ion, and water. The presence of the counter-ion could be significant as it affects peptide secondary structure and biological activity. The purpose of this study was to estimate the impact of counter-ion on antistaphylococcal activity of selected AMPs (CAMEL, citropin 1.1, LL-37, pexiganan, temporin A). To do this, three kinds of salts were prepared, namely, acetates, hydrochlorides, and trifluoroacetates. In addition, the hemolytic activity against human red blood cells (hRBCs) and cytotoxicity (HaCaT) were determined. The results indicate that there is a substantial difference between different salts, but the pattern is not consistent for the peptides. In general, the antistaphylococcal activity decreased in the order: CAMEL > temporin A > pexiganan > citropin 1.1 ≫ LL-37. The highest selectivity indexes were determined for CAMEL hydrochloride, pexiganan acetate, and temporin A trifluoroacetate. This study shows how important is to take into account the kind of counter-ions when designing novel peptide-based antimicrobials.
doi_str_mv 10.1007/s00726-017-2536-9
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The highest selectivity indexes were determined for CAMEL hydrochloride, pexiganan acetate, and temporin A trifluoroacetate. 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subjects Acetates
Acetic acid
Analytical Chemistry
Anti-Bacterial Agents - chemistry
Anti-Bacterial Agents - pharmacology
Antibiotics
Antiinfectives and antibacterials
Antimicrobial agents
Antimicrobial Cationic Peptides - chemistry
Antimicrobial Cationic Peptides - pharmacology
Antimicrobial peptides
Biochemical Engineering
Biochemistry
Biological activity
Biomedical and Life Sciences
Cations - chemistry
Cations - pharmacology
Cytotoxicity
Drug development
Erythrocytes
Hydrochlorides
Life Sciences
Neurobiology
Original
Original Article
Pathogens
Peptides
Protein structure
Proteomics
Salts
Secondary structure
Staphylococcus aureus - growth & development
Toxicity
Trifluoroacetates
title Counter-ion effect on antistaphylococcal activity and cytotoxicity of selected antimicrobial peptides
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