期刊
CHEMMEDCHEM
卷 15, 期 3, 页码 265-269出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cmdc.201900607
关键词
antibiotics; ciprofloxacin; drug discovery; dual inhibitors; gyrase A; gyrase B; hybrids
资金
- Slovenian Research Agency [P1-0208]
- COST Action [CA15135]
- European Research Council [H2020-ERC-2014-CoG 648364]
- Wellcome Trust
- GINOP (MolMedEx TUMORDNS) [GINOP-2.3.2-15-2016-00020]
- GINOP (EVOMER) [GINOP-2.3.2-15-2016-00014]
- New National Excellence Program of the Ministry for Innovation and Technology [UNKP-18-3, UNKP-19-3]
- 'Lendulet' Program of the Hungarian Academy of Sciences
- Boehringer Ingelheim Fonds
- [EFOP 3.6.3-VEKOP-16-2017-00009]
The emergence of multidrug-resistant bacteria is a global health threat necessitating the discovery of new antibacterials and novel strategies for fighting bacterial infections. We report first-in-class DNA gyrase B (GyrB) inhibitor/ciprofloxacin hybrids that display antibacterial activity against Escherichia coli. Whereas DNA gyrase ATPase inhibition experiments, DNA gyrase supercoiling assays, and in vitro antibacterial assays suggest binding of the hybrids to the E. coli GyrA and GyrB subunits, an interaction with the GyrA fluoroquinolone-binding site seems to be solely responsible for their antibacterial activity. Our results provide a foundation for a new concept of facilitating entry of nonpermeating GyrB inhibitors into bacteria by conjugation with ciprofloxacin, a highly permeable GyrA inhibitor. A hybrid molecule containing GyrA and GyrB inhibitor parts entering the bacterial cell would then elicit a strong antibacterial effect by inhibition of both the GyrA and GyrB subunits of DNA gyrase and potentially slow bacterial resistance development.
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