Cited by 134Bacterial Genetics and BiotechnologyPneumonia and Respiratory InfectionsBacterial Infections and Vaccines

Role of the manganese efflux system mntE for signalling and pathogenesis in Streptococcus pneumoniae

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Rosch, Jason W., Gao, Geli, Ridout, Granger, Wang, Yong‐Dong, Tuomanen, Elaine I.·2009·Molecular Microbiology

Abstract

Summary: The ability of bacteria to sense and respond to both environmental and intracellular metal concentrations plays an important role in pathogenesis. The acquisition of manganese is vital for the virulence of several bacterial species. Although manganese uptake systems have been well studied in bacteria, no manganese efflux system has yet been identified. In this study we have identified a cation diffusion facilitator (CDF) protein (Sp1552) of unknown substrate specificity that functions as a manganese export system in Streptococcus pneumoniae. We designated the gene for this manganese efflux system mntE and found that the mutant strain was highly sensitive to manganese stress. Although the mutant was more resistant to oxidative stress and produced more H 2 O 2 and pili, it had reduced virulence in a murine model of infection, indicating that manganese export plays a role in host pathogenesis. There was a distinct differential transcriptional response to extracellular and intracellular manganese accumulation. Our study indicates that manganese efflux is required for invasive disease and may provide a useful antimicrobial target to devise future therapeutics.

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Crossref · 10.1111/j.1365-2958.2009.06638.x

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  • Inactivation of MntE in S. pneumoniae reduces nasal colonization and bloodstream invasion in mice, despite increased resistance to reactive oxygen species.

    “Inactivation of the manganese efflux protein MntE in S. pneumoniae reduces nasal colonization and bloodstream invasion in mice, despite an increased resistance to reactive oxygen species [142].”
  • The manganese efflux protein MntE is required for S. pneumoniae pathogenesis in murine nasal passages and dissemination to blood.

    “Similarly, the manganese efflux protein MntE is required for S. pneumoniae pathogenesis in murine nasal passages and dissemination to blood (116).”

    From Transition Metals and Virulence in Bacteria (2016) · cites this paper as [116]

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Authors
Rosch, J. W., Gao, G., Ridout, G., Wang, Y., & Tuomanen, E. I.
Affiliations
St. Jude Children's Research Hospital (US)
Corresponding author
Rosch, Jason W.
Venue
Molecular Microbiology
Publisher
Wiley
Published
2009-03-19
Volume
72
Issue
1
Pages
12-25
ISSN
  • 0950-382X (ISSN-L)
  • 1365-2958
OpenAlex
W1496998265
Cited by
134
References
62
Citations by year
2026: 2 · 2024: 7 · 2023: 7 · 2022: 6 · 2021: 6 · 2020: 12 · 2019: 10 · 2018: 4 · 2017: 11 · 2016: 7 · 2015: 11 · 2014: 7 · 2013: 11 · 2012: 10
FWCI
6.40
Type
journal article
Language
en
Open access
Locations
  • Molecular Microbiology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • American Lebanese Syrian Associated Charities
  • National Institutes of Health
  • National Heart, Lung, and Blood Institute (U54HL070590)
  • National Institute of Allergy and Infectious Diseases (R01AI27913, R01AI027913)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Bacterial Genetics and Biotechnology
  • Health Sciences › Medicine › Epidemiology › Pneumonia and Respiratory Infections
  • Life Sciences › Immunology and Microbiology › Microbiology › Bacterial Infections and Vaccines
Keywords
Streptococcus pneumoniae, manganese efflux, MnTe, cation diffusion facilitator, manganese stress, oxidative stress resistance, hydrogen peroxide, fimbriae, virulence, invasive disease, transcriptional response, antimicrobial drug targets
MeSH terms
Animals, Bacterial Proteins, Homeostasis, Humans, Hydrogen Peroxide, Manganese, Mice, Inbred BALB C, Fimbriae, Bacterial, RNA, Bacterial, Streptococcus pneumoniae, Virulence, Gene Expression Regulation, Bacterial, Oxidative Stress, Oligonucleotide Array Sequence Analysis, Gene Expression Profiling, Mice, Facilitated Diffusion

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