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Abstract Title:

Comparative analysis of methicillin-sensitive and resistant Staphylococcus aureus exposed to emodin based on proteomic profiling.

Abstract Source:

Biochem Biophys Res Commun. 2017 Dec 9 ;494(1-2):318-324. Epub 2017 Oct 7. PMID: 29017918

Abstract Author(s):

Xiaoyu Ji, Xiaoqiang Liu, Yuanxia Peng, Ruoting Zhan, Hui Xu, Xijin Ge

Article Affiliation:

Xiaoyu Ji

Abstract:

Emodin has a strong antibacterial activity, including methicillin-resistant Staphylococcus aureus (MRSA). However, the mechanism by which emodin induces growth inhibition against MRSA remains unclear. In this study, the isobaric tags for relative and absolute quantitation (iTRAQ) proteomics approach was used to investigate the modes of action of emodin on a MRSA isolate and methicillin-sensitive S. aureus ATCC29213(MSSA). Proteomic analysis showed that expression levels of 145 and 122 proteins were changed significantly in MRSA and MSSA, respectively, after emodin treatment. Comparative analysis of the functions of differentially expressed proteins between the two strains was performed via bioinformatics tools blast2go and STRING database. Proteins related to pyruvate pathway imbalance induction, protein synthesis inhibition, and DNA synthesis suppression were found in both methicillin-sensitive and resistant strains. Moreover, Interference proteins related to membrane damage mechanismwere also observed in MRSA. Our findings indicate that emodin is a potential antibacterial agent targeting MRSA via multiple mechanisms.

Study Type : In Vitro Study

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Sayer Ji
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