Abstract:
:Antibiotic resistance is one of the biggest threats to public health, and new antibacterial agents hence are in an urgent need to combat infectious diseases caused by multidrug-resistant (MDR) pathogens. Utilizing dimerization strategy, we rationally designed and efficiently synthesized a new series of small molecule dimeric lysine alkylamides as mimics of AMPs. Evaluation of these mimics against a panel of Gram-positive and Gram-negative bacteria including MDR strains was performed, and a broad-spectrum and potent compound 3d was identified. This compound displayed high specificity toward bacteria over mammalian cell. Time-kill kinetics and mechanistic studies suggest that compound 3d quickly eliminated bacteria in a bactericidal mode by disrupting bacterial cell membrane. In addition, lead compound 3d could inhibit biofilm formation and did not develop drug resistance in S. aureus and E. coli over 14 passages. These results suggested that dimeric lysine nonylamide has immense potential as a new type of novel small molecular agent to combat antibiotic resistance.
journal_name
J Med Chemjournal_title
Journal of medicinal chemistryauthors
Niu Y,Wang M,Cao Y,Nimmagadda A,Hu J,Wu Y,Cai J,Ye XSdoi
10.1021/acs.jmedchem.7b01704subject
Has Abstractpub_date
2018-04-12 00:00:00pages
2865-2874issue
7eissn
0022-2623issn
1520-4804journal_volume
61pub_type
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