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Rapid kill assessment of an N-arylated NH125 analogue against drug-resistant microorganisms

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Abstract

While a number of disinfection techniques are employed in healthcare units, the eradication of drug-resistant microorganisms remains a challenge. We recently reported N-arylated NH125 analogue 1, which demonstrated potent biofilm eradication and antibacterial activities against a panel of drug-resistant pathogens. The broad-spectrum activities observed for 1 along with its rapid eradication of MRSA persister cells suggested that this agent, and related analogues, can serve as disinfectants for antibiotic resistant pathogens in healthcare settings. Here, we report the rapid bactericidal activities of 1 against a panel of exponentially-growing, drug-resistant pathogens. Against MRSA, MRSE, VRE and MDR A. baumannii, 1 eradicated bacterial cells after five minutes when tested at 50 μM (3- to 6-log reduction of CFU per mL). We highlighted the rapid killing activities by demonstrating that 1 eradicates 99.99% of viable MRSA 1707 cells in one minute (50 μM, 4-log reduction of CFU per mL). In addition, 1 rapidly eradicated fungal pathogen C. neoformans in kill kinetic experiments. A solution of 1 demonstrated similar shelf stability to known disinfectant BAC-16 when tested up to 111 days after being stored. Collectively, our data highlights the potential of 1 to be used as a disinfecting agent to prevent healthcare-associated, drug-resistant infections.

Graphical abstract: Rapid kill assessment of an N-arylated NH125 analogue against drug-resistant microorganisms

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Publication details

The article was received on 13 Dec 2018, accepted on 27 Jan 2019 and first published on 29 Jan 2019


Article type: Research Article
DOI: 10.1039/C8MD00613J
Citation: Med. Chem. Commun., 2019, Advance Article

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    Rapid kill assessment of an N-arylated NH125 analogue against drug-resistant microorganisms

    Y. Abouelhassan, P. Zhang, Y. Ding and R. W. Huigens III, Med. Chem. Commun., 2019, Advance Article , DOI: 10.1039/C8MD00613J

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