Download MendeleyGold drugs as colistin adjuvants in the fight against MCR-1 producing bacteria.
Zhang, Q., Wang, M., Hu, X., Yan, A., Ho, P.L., Li, H., Sun, H.(2023) J Biol Inorg Chem 28: 225-234
- PubMed: 36662362
- DOI: https://doi.org/10.1007/s00775-022-01983-y
- Primary Citation of Related Structures:
7YJP, 7YJQ, 7YJR, 7YJS, 7YJT - PubMed Abstract:
The emergence and rapid spread of the mobile colistin resistance gene mcr-1 among bacterial species and hosts significantly challenge the efficacy of "last-line" antibiotic colistin. Previously, we reported silver nitrate and auranofin serve as colistin adjuvants for combating mcr-1-positive bacteria. Herein, we uncovered more gold-based drugs and nanoparticles, and found that they exhibited varying degree of synergisms with colistin on killing mcr-1-positive bacteria. However, pre-activation of the drugs by either glutathione or N-acetyl cysteine, thus releasing and accumulating gold ions, is perquisite for their abilities to substitute zinc cofactor from MCR-1 enzyme. X-ray crystallography and biophysical studies further supported the proposed mechanism. This study not only provides basis for combining gold-based drugs and colistin for combating mcr-1-positive bacterial infections, but also undoubtedly opens a new horizon for metabolism details of gold-based drugs in overcoming antimicrobial resistance.
Organizational Affiliation:
Department of Chemistry and CAS-HKU Joint Laboratory of Metallomics On Health and Environment, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China.
