Abstract
Antibiotic resistance, one of the major medical threats worldwide, can be selected and induced by metals through multiple mechanisms such as co-resistance, cross-resistance, and co-regulation. Compared with co-resistance and cross-resistance which are attributed to the physically or functionally linked metal and antibiotic resistance genes, co-regulation of antibiotic resistance genes by metal-responsive regulators and pathways is much more complex and elusive. Here, we discussed the main mechanisms by which antibiotic resistance is regulated in response to metals and showed recent attempts to combat antibiotic resistance by interfering with metal-based signalling pathways. Further efforts to depict the intricate metal-based regulatory network of antibiotic resistance will provide tremendous opportunities for the discovery of novel anti-resistance targets, and blocking or rewiring the metal-based signalling pathways is emerging as a promising stratagem to reverse bacterial resistance to antibiotics and rejuvenate the efficacy of conventional antibiotics.
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