PMID- 27925693 OWN - NLM STAT- MEDLINE DCOM- 20170704 LR - 20180417 IS - 1439-7633 (Electronic) IS - 1439-4227 (Linking) VI - 18 IP - 4 DP - 2017 Feb 16 TI - Identification of N-Arylated NH125 Analogues as Rapid Eradicating Agents against MRSA Persister Cells and Potent Biofilm Killers of Gram-Positive Pathogens. PG - 352-357 LID - 10.1002/cbic.201600622 [doi] AB - Bacterial biofilms housing dormant persister cells are innately tolerant to antibiotics and disinfectants, yet several membrane-active agents are known to eradicate tolerant bacterial cells. NH125, a membrane-active persister killer and starting point for development, led to the identification of two N-arylated analogues (1 and 2) that displayed improved biofilm eradication potencies compared to the parent compound and rapid persister-cell-killing activities in stationary cultures of methicillin-resistant Staphylococcus aureus (MRSA). We found 1 and 2 to be superior to other membrane-active agents in biofilm eradication assays, with 1 demonstrating minimum biofilm eradication concentrations (MBEC) of 23.5, 11.7, and 2.35 mum against MRSA, methicillin-resistant Staphylococcus epidermidis (MRSE), and vancomycin-resistant Enterococcus faecium (VRE) biofilms, respectively. We tested our panel of membrane-active agents against MRSA stationary cultures and found 1 to rapidly eradicate MRSA stationary cells by 4 log units (99.99 %) in 30 min. The potent biofilm eradication and rapid persister-cell-killing activities exhibited by N-arylated NH125 analogues could have significant impact in addressing biofilm-associated problems. CI - (c) 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. FAU - Abouelhassan, Yasmeen AU - Abouelhassan Y AD - Department of Medicinal Chemistry, Center for Natural Products Drug Discovery and Development (CNPD3), College of Pharmacy, University of Florida, 1345 Center Drive, Gainesville, FL, 32610, USA. FAU - Basak, Akash AU - Basak A AD - Department of Chemistry, University of Florida, 1600 SW Archer Road, Gainesville, FL, 32610, USA. FAU - Yousaf, Hussain AU - Yousaf H AD - Department of Medicinal Chemistry, Center for Natural Products Drug Discovery and Development (CNPD3), College of Pharmacy, University of Florida, 1345 Center Drive, Gainesville, FL, 32610, USA. FAU - Huigens, Robert W 3rd AU - Huigens RW 3rd AD - Department of Medicinal Chemistry, Center for Natural Products Drug Discovery and Development (CNPD3), College of Pharmacy, University of Florida, 1345 Center Drive, Gainesville, FL, 32610, USA. AD - Department of Chemistry, University of Florida, 1600 SW Archer Road, Gainesville, FL, 32610, USA. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20170116 PL - Germany TA - Chembiochem JT - Chembiochem : a European journal of chemical biology JID - 100937360 RN - 0 (Acetamides) RN - 0 (Anti-Bacterial Agents) RN - 0 (Imidazoles) RN - 0 (N-(4-bromo-2-(2-pyridylcarbonyl)phenyl)-2-aminoacetamide) RN - 0 (NH 125) RN - 0 (Pyridines) SB - IM MH - Acetamides/chemistry MH - Anti-Bacterial Agents/chemistry/pharmacology MH - Biofilms/*drug effects MH - Erythrocytes/drug effects MH - Gram-Positive Bacteria/*drug effects MH - Humans MH - Imidazoles/*chemistry/*pharmacology MH - Methicillin-Resistant Staphylococcus aureus/*drug effects MH - Microbial Sensitivity Tests MH - Molecular Structure MH - Pyridines/chemistry OTO - NOTNLM OT - MRSA OT - antibacterial agents OT - biofilms OT - drug-resistant bacteria OT - persister cells EDAT- 2016/12/08 06:00 MHDA- 2017/07/05 06:00 CRDT- 2016/12/08 06:00 PHST- 2016/11/16 00:00 [received] PHST- 2016/12/08 06:00 [pubmed] PHST- 2017/07/05 06:00 [medline] PHST- 2016/12/08 06:00 [entrez] AID - 10.1002/cbic.201600622 [doi] PST - ppublish SO - Chembiochem. 2017 Feb 16;18(4):352-357. doi: 10.1002/cbic.201600622. Epub 2017 Jan 16.