Proteomic and Systematic Functional Profiling Unveils Citral Targeting Antibiotic Resistance, Antioxidant Defense, and Biofilm-Associated Two-Component Systems of Acinetobacter baumannii To Encumber Biofilm and Virulence Traits

MSystems
Anthonymuthu SelvarajShunmugiah Karutha Pandian

Abstract

Acinetobacter baumannii has been reported as a multidrug-resistant bacterium due to biofilms and antimicrobial resistance mechanisms. Hence, novel therapeutic strategies are necessary to overcome A. baumannii infections. This study revealed that citral at 200 μg/ml attenuated A. baumannii biofilms by up to 90% without affecting viability. Furthermore, microscopic analyses and in vitro assays confirmed the antibiofilm efficacy of citral. The global effect of citral on A. baumannii was evaluated by proteomic, transcriptional, and in silico approaches. Two-dimensional (2D) gel electrophoresis and matrix-assisted laser desorption ionization-time of flight/time of flight (MALDI-TOF/TOF) analyses were used to assess the effect of citral on the A. baumannii cellular proteome. Quantitative real-time PCR (qPCR) analysis was done to validate the proteomic data and identify the differentially expressed A. baumannii genes. Protein-protein interactions, gene enrichment, and comparative gene network analyses were performed to explore the interactions and functional attributes of differentially expressed proteins of A. baumannii Global omics-based analyses revealed that citral targeted various mechanisms such as biofilm formation, antibiotic ...Continue Reading

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Methods Mentioned

BETA
light microscopy
scanning electron microscopy
electrophoresis
proteomic profiling
PCR
motility assay
protein assay
acetylation

Software Mentioned

ClueGO
MS
MOlecular Weight SEarch
CluePedia
Cytoscape
MALDI MS
SPSS
Fit
ImageMaster 2D Platinum
MOWSE

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