Extracellular Electron Transfer Powers Enterococcus faecalis Biofilm Metabolism

Enterococci are important human commensals and significant opportunistic pathogens. Biofilm-related enterococcal infections, such as endocarditis, urinary tract infections, wound and surgical site infections, and medical device-associated infections, often become chronic upon the formation of biofil...

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Main Authors: Keogh, Damien, Lam, Ling Ning, Pavagadhi, Shruti, Umashankar, Shivshankar, Doyle, Lucinda Elizabeth, Matysik, Artur Stanislaw, Marsili, Enrico, Kline, Kimberly A., Song, Yiyang, Ng, Sean Pin, Boothroyd, Chris B., Dunny, Gary M., Low, Pui Man, Dale, Jennifer L., Williams, Rohan B. H., Swarup, Sanjay
Other Authors: Hancock, Lynn E.
Format: Article
Language:English
Published: 2018
Subjects:
Online Access:https://hdl.handle.net/10356/89155
http://hdl.handle.net/10220/44793
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-891552023-02-28T17:02:35Z Extracellular Electron Transfer Powers Enterococcus faecalis Biofilm Metabolism Keogh, Damien Lam, Ling Ning Pavagadhi, Shruti Umashankar, Shivshankar Doyle, Lucinda Elizabeth Matysik, Artur Stanislaw Marsili, Enrico Kline, Kimberly A. Song, Yiyang Ng, Sean Pin Boothroyd, Chris B. Dunny, Gary M. Low, Pui Man Dale, Jennifer L. Williams, Rohan B. H. Swarup, Sanjay Hancock, Lynn E. Hultgren, Scott J. Interdisciplinary Graduate School (IGS) Lee Kong Chian School of Medicine (LKCMedicine) School of Chemical and Biomedical Engineering School of Materials Science & Engineering School of Biological Sciences Singapore Centre for Environmental Life Sciences Engineering Singapore Phenome Centre Enterococcus Faecalis Biofilm Enterococci are important human commensals and significant opportunistic pathogens. Biofilm-related enterococcal infections, such as endocarditis, urinary tract infections, wound and surgical site infections, and medical device-associated infections, often become chronic upon the formation of biofilm. The biofilm matrix establishes properties that distinguish this state from free-living bacterial cells and increase tolerance to antimicrobial interventions. The metabolic versatility of the enterococci is reflected in the diversity and complexity of environments and communities in which they thrive. Understanding metabolic factors governing colonization and persistence in different host niches can reveal factors influencing the transition to biofilm pathogenicity. Here, we report a form of iron-dependent metabolism for Enterococcus faecalis where, in the absence of heme, extracellular electron transfer (EET) and increased ATP production augment biofilm growth. We observe alterations in biofilm matrix depth and composition during iron-augmented biofilm growth. We show that the ldh gene encoding L-lactate dehydrogenase is required for iron-augmented energy production and biofilm formation and promotes EET. NRF (Natl Research Foundation, S’pore) MOE (Min. of Education, S’pore) Published version 2018-05-16T02:52:19Z 2019-12-06T17:19:05Z 2018-05-16T02:52:19Z 2019-12-06T17:19:05Z 2018 Journal Article Keogh, D., Lam, L. N., Doyle, L. E., Matysik, A., Pavagadhi, S., Umashankar, S., et al. (2018). Extracellular Electron Transfer Powers Enterococcus faecalis Biofilm Metabolism. mBio, 9(2), e00626-17-. 2161-2129 https://hdl.handle.net/10356/89155 http://hdl.handle.net/10220/44793 10.1128/mBio.00626-17 en mBio © 2018 Keogh et al. This is an openaccess article distributed under the terms of the Creative Commons Attribution 4.0 International license. 16 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Enterococcus Faecalis
Biofilm
spellingShingle Enterococcus Faecalis
Biofilm
Keogh, Damien
Lam, Ling Ning
Pavagadhi, Shruti
Umashankar, Shivshankar
Doyle, Lucinda Elizabeth
Matysik, Artur Stanislaw
Marsili, Enrico
Kline, Kimberly A.
Song, Yiyang
Ng, Sean Pin
Boothroyd, Chris B.
Dunny, Gary M.
Low, Pui Man
Dale, Jennifer L.
Williams, Rohan B. H.
Swarup, Sanjay
Extracellular Electron Transfer Powers Enterococcus faecalis Biofilm Metabolism
description Enterococci are important human commensals and significant opportunistic pathogens. Biofilm-related enterococcal infections, such as endocarditis, urinary tract infections, wound and surgical site infections, and medical device-associated infections, often become chronic upon the formation of biofilm. The biofilm matrix establishes properties that distinguish this state from free-living bacterial cells and increase tolerance to antimicrobial interventions. The metabolic versatility of the enterococci is reflected in the diversity and complexity of environments and communities in which they thrive. Understanding metabolic factors governing colonization and persistence in different host niches can reveal factors influencing the transition to biofilm pathogenicity. Here, we report a form of iron-dependent metabolism for Enterococcus faecalis where, in the absence of heme, extracellular electron transfer (EET) and increased ATP production augment biofilm growth. We observe alterations in biofilm matrix depth and composition during iron-augmented biofilm growth. We show that the ldh gene encoding L-lactate dehydrogenase is required for iron-augmented energy production and biofilm formation and promotes EET.
author2 Hancock, Lynn E.
author_facet Hancock, Lynn E.
Keogh, Damien
Lam, Ling Ning
Pavagadhi, Shruti
Umashankar, Shivshankar
Doyle, Lucinda Elizabeth
Matysik, Artur Stanislaw
Marsili, Enrico
Kline, Kimberly A.
Song, Yiyang
Ng, Sean Pin
Boothroyd, Chris B.
Dunny, Gary M.
Low, Pui Man
Dale, Jennifer L.
Williams, Rohan B. H.
Swarup, Sanjay
format Article
author Keogh, Damien
Lam, Ling Ning
Pavagadhi, Shruti
Umashankar, Shivshankar
Doyle, Lucinda Elizabeth
Matysik, Artur Stanislaw
Marsili, Enrico
Kline, Kimberly A.
Song, Yiyang
Ng, Sean Pin
Boothroyd, Chris B.
Dunny, Gary M.
Low, Pui Man
Dale, Jennifer L.
Williams, Rohan B. H.
Swarup, Sanjay
author_sort Keogh, Damien
title Extracellular Electron Transfer Powers Enterococcus faecalis Biofilm Metabolism
title_short Extracellular Electron Transfer Powers Enterococcus faecalis Biofilm Metabolism
title_full Extracellular Electron Transfer Powers Enterococcus faecalis Biofilm Metabolism
title_fullStr Extracellular Electron Transfer Powers Enterococcus faecalis Biofilm Metabolism
title_full_unstemmed Extracellular Electron Transfer Powers Enterococcus faecalis Biofilm Metabolism
title_sort extracellular electron transfer powers enterococcus faecalis biofilm metabolism
publishDate 2018
url https://hdl.handle.net/10356/89155
http://hdl.handle.net/10220/44793
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