PMID- 30185388 OWN - NLM STAT- MEDLINE DCOM- 20190507 LR - 20190507 IS - 1464-3391 (Electronic) IS - 0968-0896 (Linking) VI - 26 IP - 17 DP - 2018 Sep 15 TI - Amphipathic sulfonamidobenzamides mimicking small antimicrobial marine natural products; investigation of antibacterial and anti-biofilm activity against antibiotic resistant clinical isolates. PG - 4930-4941 LID - S0968-0896(18)30897-6 [pii] LID - 10.1016/j.bmc.2018.08.032 [doi] AB - There is an urgent need for novel antimicrobial agents to address the threat of bacterial resistance to modern society. We have used a structural motif found in antimicrobial marine hit compounds as a basis for synthesizing a library of antimicrobial sulfonamidobenzamide lead compounds. Potent in vitro antimicrobial activity against clinically relevant bacterial strains was demonstrated for two compounds, G6 and J18, with minimal inhibitory concentrations (MIC) of 4-16 mug/ml against clinical methicillin-resistant Staphylococcus aureus (MRSA) and vancomycin-resistant Enterococcus faecium (VRE). The two compounds G6 and J18, together with several other compounds of this library, also caused >/=90% eradication of pre-established biofilm of methicillin-resistant S. epidermidis (MRSE) at 40 mug/ml. Using a luciferase assay, the mechanism of action of G6 was shown to resemble the biocide chlorhexidine by targeting the bacterial cell membrane. CI - Copyright (c) 2018 Elsevier Ltd. All rights reserved. FAU - Igumnova, Elizaveta M AU - Igumnova EM AD - Department of Pharmacy, Faculty of Health Sciences, UiT - The Arctic University of Norway, NO-9037 Tromso, Norway. FAU - Mishchenko, Ekaterina AU - Mishchenko E AD - The Norwegian College of Fishery Science, Faculty of Biosciences, Fisheries and Economics, UiT - The Arctic University of Norway, NO-9037 Tromso, Norway. FAU - Haug, Tor AU - Haug T AD - The Norwegian College of Fishery Science, Faculty of Biosciences, Fisheries and Economics, UiT - The Arctic University of Norway, NO-9037 Tromso, Norway. FAU - Blencke, Hans-Matti AU - Blencke HM AD - The Norwegian College of Fishery Science, Faculty of Biosciences, Fisheries and Economics, UiT - The Arctic University of Norway, NO-9037 Tromso, Norway. FAU - Sollid, Johanna U Ericson AU - Sollid JUE AD - Department of Medical Biology, Faculty of Health Sciences, UiT - The Arctic University of Norway, NO-9037 Tromso, Norway. FAU - Fredheim, Elizabeth G Aarag AU - Fredheim EGA AD - Department of Pharmacy, Faculty of Health Sciences, UiT - The Arctic University of Norway, NO-9037 Tromso, Norway. FAU - Lauksund, Silje AU - Lauksund S AD - Department of Pharmacy, Faculty of Health Sciences, UiT - The Arctic University of Norway, NO-9037 Tromso, Norway. FAU - Stensvag, Klara AU - Stensvag K AD - The Norwegian College of Fishery Science, Faculty of Biosciences, Fisheries and Economics, UiT - The Arctic University of Norway, NO-9037 Tromso, Norway. FAU - Strom, Morten B AU - Strom MB AD - Department of Pharmacy, Faculty of Health Sciences, UiT - The Arctic University of Norway, NO-9037 Tromso, Norway. Electronic address: morten.strom@uit.no. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20180828 PL - England TA - Bioorg Med Chem JT - Bioorganic & medicinal chemistry JID - 9413298 RN - 0 (Anti-Bacterial Agents) RN - 0 (Benzamides) RN - 0 (Biological Products) RN - 0 (Sulfonamides) SB - IM MH - Anti-Bacterial Agents/chemistry/*pharmacology MH - Benzamides/chemistry/*pharmacology MH - Biofilms/*drug effects MH - Biological Products/chemistry/*pharmacology MH - Drug Resistance, Multiple, Bacterial MH - Erythrocytes/drug effects MH - Gram-Negative Bacteria/*drug effects MH - Gram-Positive Bacteria/*drug effects MH - Hemolysis/drug effects MH - Humans MH - Methicillin-Resistant Staphylococcus aureus/*drug effects MH - Microbial Sensitivity Tests MH - Seawater/chemistry MH - Sulfonamides/chemistry/*pharmacology OTO - NOTNLM OT - Antibacterial OT - Antimicrobial OT - ESBL - CARBA OT - Marine natural product mimics OT - Multi-resistant bacteria OT - Peptidomimetics OT - Sulfonamidobenzamides EDAT- 2018/09/07 06:00 MHDA- 2019/05/08 06:00 CRDT- 2018/09/07 06:00 PHST- 2018/05/09 00:00 [received] PHST- 2018/08/22 00:00 [revised] PHST- 2018/08/26 00:00 [accepted] PHST- 2018/09/07 06:00 [pubmed] PHST- 2019/05/08 06:00 [medline] PHST- 2018/09/07 06:00 [entrez] AID - S0968-0896(18)30897-6 [pii] AID - 10.1016/j.bmc.2018.08.032 [doi] PST - ppublish SO - Bioorg Med Chem. 2018 Sep 15;26(17):4930-4941. doi: 10.1016/j.bmc.2018.08.032. Epub 2018 Aug 28.