Nolan VC, Rafols L, Harrison J, Soldevila-Barreda JJ, Crosatti M, Garton NJ, Wegrzyn M, Timms DL, Seaton CC, Sendron H, Azmanova M, Barry NP, Pitto-Barry A, Cox JA. Indole-containing arene-ruthenium complexes with broad spectrum activity against antibiotic-resistant bacteria.
CURRENT RESEARCH IN MICROBIAL SCIENCES 2022;
3:100099. [PMID:
35059676 PMCID:
PMC8760505 DOI:
10.1016/j.crmicr.2021.100099]
[Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 12/13/2021] [Accepted: 12/13/2021] [Indexed: 11/10/2022] Open
Abstract
A new family of indole-containing arene ruthenium organometallic compounds are active against several bacterial species and drug resistant strains
Bactericidal activity observed against various Gram negative, Gram positive and acid-fast bacteria, demonstrating broad-spectrum inhibitory activity
Compound series exhibits low toxicity against human cells
Shows considerable promise as next generation antibiotics
Antimicrobial resistant (AMR) bacteria are emerging and spreading globally, threatening our ability to treat common infectious diseases. The development of new classes of antibiotics able to kill or inhibit the growth of such AMR bacteria through novel mechanisms of action is therefore urgently needed. Here, a new family of indole-containing arene ruthenium organometallic compounds are screened against several bacterial species and drug resistant strains. The most active complex [(p-cym)Ru(O-cyclohexyl-1H-indole-2-carbothioate)Cl] (3) shows growth inhibition and bactericidal activity against different organisms (Acinetobacter baumannii, Mycobacterium abscessus, Mycobacterium tuberculosis, Staphylococcus aureus, Salmonella enterica serovar Typhi and Escherichia coli), demonstrating broad-spectrum inhibitory activity. Importantly, this compound series exhibits low toxicity against human cells. Owing to the novelty of the antibiotic family, their moderate cytotoxicity, and their inhibitory activity against Gram positive, Gram negative and acid-fast, antibiotic resistant microorganisms, this series shows significant promise for further development.
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