Antibacterial Activity of Juglone against Staphylococcus aureus: From Apparent to Proteomic.

Abstract:

:The proportion of foodborne disease caused by pathogenic microorganisms is rising worldwide, with staphylococcal food poisoning being one of the main causes of this increase. Juglone is a plant-derived 1,4-naphthoquinone with confirmed antibacterial and antitumor activities. However, the specific mechanism underlying its antibacterial activity against Staphylococcus aureus remains unclear. To elucidate the mechanism underlying its antibacterial activity, isobaric tags for relative and absolute quantitation methods of quantitative proteomics were applied for analysis of the 53 proteins that were differentially expressed after treatment with juglone. Combined with verification experiments, such as detection of changes in DNA and RNA content and quantification of oxidative damage, our results suggested that juglone effectively increased the protein expression of oxidoreductase and created a peroxidative environment within the cell, significantly reducing cell wall formation and increasing membrane permeability. We hypothesize that juglone binds to DNA and reduces DNA transcription and replication directly. This is the first study to adopt a proteomic approach to investigate the antibacterial mechanism of juglone.

journal_name

Int J Mol Sci

authors

Wang J,Cheng Y,Wu R,Jiang D,Bai B,Tan D,Yan T,Sun X,Zhang Q,Wu Z

doi

10.3390/ijms17060965

subject

Has Abstract

pub_date

2016-06-18 00:00:00

issue

6

issn

1422-0067

pii

ijms17060965

journal_volume

17

pub_type

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