Metabolomic analysis of low and high biofilm-forming Helicobacter pylori strains

Wong, E.H.J. and Ng, C.G. and Goh, K.L. and Vadivelu, J. and Ho, B. and Loke, M.F. (2018) Metabolomic analysis of low and high biofilm-forming Helicobacter pylori strains. Scientific Reports, 8 (1). pp. 1-9. ISSN 2045-2322, DOI

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The biofilm-forming-capability of Helicobacter pylori has been suggested to be among factors influencing treatment outcome. However, H. pylori exhibit strain-to-strain differences in biofilm-forming-capability. Metabolomics enables the inference of spatial and temporal changes of metabolic activities during biofilm formation. Our study seeks to examine the differences in metabolome of low and high biofilm-formers using the metabolomic approach. Eight H. pylori clinical strains with different biofilm-forming-capability were chosen for metabolomic analysis. Bacterial metabolites were extracted using Bligh and Dyer method and analyzed by Liquid Chromatography/Quadrupole Time-of-Flight mass spectrometry. The data was processed and analyzed using the MassHunter Qualitative Analysis and the Mass Profiler Professional programs. Based on global metabolomic profiles, low and high biofilm-formers presented as two distinctly different groups. Interestingly, low-biofilm-formers produced more metabolites than high-biofilm-formers. Further analysis was performed to identify metabolites that differed significantly (p-value < 0.005) between low and high biofilm-formers. These metabolites include major categories of lipids and metabolites involve in prostaglandin and folate metabolism. Our findings suggest that biofilm formation in H. pylori is complex and probably driven by the bacterium' endogenous metabolism. Understanding the underlying metabolic differences between low and high biofilm-formers may enhance our current understanding of pathogenesis, extragastric survival and transmission of H. pylori infections.

Item Type: Article
Funders: University of Malaya-Ministry of Education (UM-MoE) High Impact Research (HIR) Grant UM.C/625/1/HIR/MoE/CHAN/13/3 (Account No. H-50001-A000030), National Medical Research Council (NMRC) Grant No. R-182-000-180-213
Uncontrolled Keywords: Metabolomic analysis; Biofilm-forming; Helicobacter pylori strains
Subjects: R Medicine
Divisions: Faculty of Medicine
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 07 Aug 2018 07:42
Last Modified: 07 Aug 2018 07:42

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