Cited by 1,535Trace Elements in HealthBacterial Genetics and BiotechnologyIron Metabolism and Disorders

Nutritional immunity: transition metals at the pathogen–host interface

Open access
Hood, M. Indriati, Skaar, Eric P.·2012·Nature Reviews Microbiology

Abstract

Transition metals occupy an essential niche in biological systems. Their electrostatic properties stabilize substrates or reaction intermediates in the active sites of enzymes, and their heightened reactivity is harnessed for catalysis. However, this heightened activity also renders transition metals toxic at high concentrations. Bacteria, like all living organisms, must regulate their intracellular levels of these elements to satisfy their physiological needs while avoiding harm. It is therefore not surprising that the host capitalizes on both the essentiality and toxicity of transition metals to defend against bacterial invaders. This Review discusses established and emerging paradigms in nutrient metal homeostasis at the pathogen-host interface.

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Crossref · 10.1038/nrmicro2836

Cites

152 of 152 references verified0 citation errors · 0 not checkable

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  • Haptoglobin and haemopexin rapidly bind hemoglobin and haem released from erythrocytes respectively for iron recycling and to possibly avoid toxicity posed by free haem.

    “Haptoglobin and haemopexin rapidly bind hemoglobin and haem released from erythrocytes respectively for iron recycling and to possible avoid toxicity posed by free haem (Kumar and Bandyopadhyay, 2005; Hood and Skaar, 2012).”

    From Iron at the Centre of Candida albicans Interactions (2018) · cites this paper as Hood and Skaar, 2012

    The 'Host mechanisms for withholding iron' section (page not provided) says that haptoglobin and haemopexin rapidly bind haemoglobin and haem, respectively, when released from erythrocytes. It describes this binding as limiting bacterial access to iron, but does not state that its purposes are iron recycling or avoiding free-haem toxicity. (LLM, conf=0.89)

    Experimental — accuracy not yet measured
  • Fe is a redox-active trace metal that has important roles in most biological systems, supporting vital processes such as DNA replication, transcription and central metabolism.

    “Fe is a redox- active trace metal that has important roles in most biological systems, supporting vital processes such as DNA replication, transcription and central metabolism 9 .”

    From Nutritional immunity: the battle for nutrient metals at the host–pathogen interface (2022) · cites this paper as [9]

    The “Fe limitation: a universal strategy in innate defence” section explicitly says Fe supports DNA replication, transcription and central metabolism in bacteria. The broader claim that it supports those specific processes in most biological systems goes beyond what this passage states, although the opening passage describes Fe as a commonly used redox-active metal. (LLM, conf=0.85)

    Experimental — accuracy not yet measured
  • During infection, host nutritional immunity sequesters nutrients including iron, causing S. aureus to experience Fe limitation.

    “Due to host nutritional immunity and iron (Fe) sequestration, S. aureus experiences Fe limitation during infection.”
  • In the human host, iron is a highly restricted nutrient.

    “Although iron is abundant within the earth crust, in the human host, iron is a highly restricted nutrient (Frey and Reed, 2012; Hood and Skaar, 2012).”

    From Iron at the Centre of Candida albicans Interactions (2018) · cites this paper as Hood and Skaar, 2012

  • The concerted action of host Fe-binding proteins renders host Fe pools largely inaccessible to bacteria that lack high-affinity Fe uptake pathways or systems.

    “The concerted action of these proteins renders host Fe pools largely inaccessible to bacteria that lack highaffinity Fe uptake pathways or systems 9,12,14 .”

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Cites

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2 of the 154 references couldn’t be matched to a known paper.

Research works printed but not linked: 1

  1. [19]Ratcliff-Griffin M Wilks A Stojiljkovic I Iron transport in bacteria: molecular genetics, biochemistry, microbial pathogenesis and ecology Crosa JH Mey AR Payne SM 86 94 ASM Press Washington, D.C. 2004

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Authors
Hood, M. I., & Skaar, E. P.
Affiliations
Vanderbilt University (US)
Corresponding author
Skaar, Eric P.
Venue
Nature Reviews Microbiology
Published
2012-07-16
Volume
10
Issue
8
Pages
525-537
ISSN
  • 1740-1526 (ISSN-L)
  • 1740-1534
OpenAlex
W1964339096
Cited by
1,535
References
154
Citations by year
2026: 132 · 2025: 97 · 2024: 118 · 2023: 107 · 2022: 152 · 2021: 150 · 2020: 129 · 2019: 147 · 2018: 97 · 2017: 115 · 2016: 97 · 2015: 87 · 2014: 52 · 2013: 40 · 2012: 11
FWCI
7.40
Type
journal article
Language
en
Open access
Locations
  • Nature Reviews Microbiology (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • Howard Hughes Medical Institute
  • National Institutes of Health
  • National Institute of Allergy and Infectious Diseases (AI 069233, AI073843, AI091771, R01AI069233, R56AI091771, R01AI073843)
Topics
  • Health Sciences › Nursing › Nutrition and Dietetics › Trace Elements in Health
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Bacterial Genetics and Biotechnology
  • Health Sciences › Medicine › Hematology › Iron Metabolism and Disorders
Keywords
nutritional immunity, transition metals, metal homeostasis, host-pathogen arms race, metal sequestration, metal toxicity
MeSH terms
Bacteria, Food, Humans, Metals, Transition Elements, Host-Pathogen Interactions

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