Abstract:
:Mitochondria-targeted antioxidants are known to alleviate mitochondrial oxidative damage that is associated with a variety of diseases. Here, we showed that SkQ1, a decyltriphenyl phosphonium cation conjugated to a quinone moiety, exhibited strong antibacterial activity towards Gram-positive Bacillus subtilis, Mycobacterium sp. and Staphylococcus aureus and Gram-negative Photobacterium phosphoreum and Rhodobacter sphaeroides in submicromolar and micromolar concentrations. SkQ1 exhibited less antibiotic activity towards Escherichia coli due to the presence of the highly effective multidrug resistance pump AcrAB-TolC. E. coli mutants lacking AcrAB-TolC showed similar SkQ1 sensitivity, as B. subtilis. Lowering of the bacterial membrane potential by SkQ1 might be involved in the mechanism of its bactericidal action. No significant cytotoxic effect on mammalian cells was observed at bacteriotoxic concentrations of SkQ1. Therefore, SkQ1 may be effective in protection of the infected mammals by killing invading bacteria.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Nazarov PA,Osterman IA,Tokarchuk AV,Karakozova MV,Korshunova GA,Lyamzaev KG,Skulachev MV,Kotova EA,Skulachev VP,Antonenko YNdoi
10.1038/s41598-017-00802-8subject
Has Abstractpub_date
2017-05-03 00:00:00pages
1394issue
1issn
2045-2322pii
10.1038/s41598-017-00802-8journal_volume
7pub_type
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