Cited by 43Salmonella and Campylobacter epidemiologyBacterial Genetics and BiotechnologyIron Metabolism and Disorders

Utilization of Lactoferrin-Bound and Transferrin-Bound Iron by Campylobacter jejuni

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Miller, Claire E., Rock, Jonathan D., Ridley, Kristian A., Williams, Peter H., Ketley, Julian M.·2008·Journal of Bacteriology

Abstract

Campylobacter jejuni NCTC 11168 was capable of growth to levels comparable with FeSO4 in defined iron-limited medium (minimal essential medium alpha [MEMalpha]) containing ferrilactoferrin, ferritransferrin, or ferri-ovotransferrin. Iron was internalized in a contact-dependent manner, with 94% of cell-associated radioactivity from either 55Fe-loaded transferrin or lactoferrin associated with the soluble cell fraction. Partitioning the iron source away from bacteria significantly decreased cellular growth. Excess cold transferrin or lactoferrin in cultures containing 55Fe-loaded transferrin or lactoferrin resulted in reduced levels of 55Fe uptake. Growth of C. jejuni in the presence of ferri- and an excess of apoprotein reduced overall levels of growth. Following incubation of cells in the presence of ferrilactoferrin, lactoferrin became associated with the cell surface; binding levels were higher after growth under iron limitation. A strain carrying a mutation in the cj0178 gene from the iron uptake system Cj0173c-Cj0178 demonstrated significantly reduced growth promotion in the presence of ferrilactoferrin in MEMalpha compared to wild type but was not affected in the presence of heme. Moreover, this mutant acquired less 55Fe than wild type when incubated with 55Fe-loaded protein and bound less lactoferrin. Complementation restored the wild-type phenotype when cells were grown with ferrilactoferrin. A mutant in the ABC transporter system permease gene (cj0174c) showed a small but significant growth reduction. The cj0176c-cj0177 intergenic region contains two separate Fur-regulated iron-repressible promoters. This is the first demonstration that C. jejuni is capable of acquiring iron from members of the transferrin protein family, and our data indicate a role for Cj0178 in this process.

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Crossref · 10.1128/jb.01761-07

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  • Even without other microbes, C. jejuni can steal iron directly from host lactoferrin and transferrin, a process called iron piracy.

    “Even in the absence of other microbes, C. jejuni can steal iron directly from host lactoferrin and transferrin in a process termed iron piracy (Miller et al., 2008).”

    From The Impact of Dietary Transition Metals on Host-Bacterial Interactions (2018) · cites this paper as Miller et al., 2008

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Authors
Miller, C. E., Rock, J. D., Ridley, K. A., Williams, P. H., & Ketley, J. M.
Affiliations
University of Leicester (GB)
Corresponding author
Ketley, Julian M.
Venue
Journal of Bacteriology
Published
2008-03-15
Volume
190
Issue
6
Pages
1900-1911
ISSN
  • 0021-9193 (ISSN-L)
  • 1098-5530
OpenAlex
W2140239247
Cited by
43
References
63
Citations by year
2026: 1 · 2025: 3 · 2024: 2 · 2023: 1 · 2021: 1 · 2020: 4 · 2019: 1 · 2018: 2 · 2017: 2 · 2016: 1 · 2015: 5 · 2014: 3 · 2013: 2 · 2012: 4
FWCI
5.84
Type
journal article
Language
en
Open access
Locations
  • Journal of Bacteriology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Leicester Research Archive (University of Leicester) (submittedVersion)
Funders
Biotechnology and Biological Sciences Research Council (BB/F022328/1)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Food Science › Salmonella and Campylobacter epidemiology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Bacterial Genetics and Biotechnology
  • Health Sciences › Medicine › Hematology › Iron Metabolism and Disorders
Keywords
Campylobacter jejuni, lactoferrin, transferrin, iron acquisition, ovotransferrin, iron absorption, ABC transporters, Fur regulation, iron limitation, cell surface binding, heme
MeSH terms
Bacterial Proteins, Cell Division, Conalbumin, Genetic Complementation Test, Humans, Iron, Iron Radioisotopes, Lactoferrin, Mutation, Protein Binding, Transferrin, Gene Expression Regulation, Bacterial, Campylobacter jejuni, Electrophoretic Mobility Shift Assay

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