Cited by 1,241Heme Oxygenase-1 and Carbon MonoxideHemoglobin structure and functionPorphyrin Metabolism and Disorders

Mechanisms of Cell Protection by Heme Oxygenase-1

Gozzelino, Raffaella, Jeney, Viktoria, Soares, Miguel P.·2010·Annual Review of Pharmacology and Toxicology

Abstract

Heme oxygenases (HO) catabolize free heme, that is, iron (Fe) protoporphyrin (IX), into equimolar amounts of Fe 2+ , carbon monoxide (CO), and biliverdin. The stress-responsive HO-1 isoenzyme affords protection against programmed cell death. The mechanism underlying this cytoprotective effect relies on the ability of HO-1 to catabolize free heme and prevent it from sensitizing cells to undergo programmed cell death. This cytoprotective effect inhibits the pathogenesis of a variety of immune-mediated inflammatory diseases.

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Crossref · 10.1146/annurev.pharmtox.010909.105600

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240 of 240 references verified0 citation errors · 0 not checkable

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  • HO-1 exerts cytoprotective effects by reducing the pro-oxidative activity of heme and by re-programming metabolic traits, thereby limiting tissue damage in inflammatory processes, including sepsis.

    “Thus, HO-1 exerts cytoprotective effects by reducing the pro-oxidative activity of heme and by re-programming metabolic traits, thereby limiting tissue damage in the course of inflammatory processes, including sepsis (Gozzelino et al., 2010; Weis et al., 2017).”

    From The Role of Iron Regulation in Immunometabolism and Immune-Related Disease (2019) · cites this paper as Gozzelino et al., 2010

  • Heme-mediated cytotoxicity occurs via a Fenton reaction producing hydroxyl radicals.

    “Presumably, this occurs via a mechanism driven via the Fenton reaction in which hydrogen peroxide (H 2 O 2 ) oxidizes Fe 2+ , either within the context of the tetrapyrrole ring or when Fe is released from heme, to produce highly reactive hydroxyl radicals (OH .) [38,212].”

    From The Iron age of host–microbe interactions (2015) · cites this paper as [38]

  • Labile heme sensitizes parenchyma cells to undergo programmed cell death in response to proinflammatory cytokines such as TNF, as well as Fas, ROS, and RNS.

    “Briefly, labile heme sensitizes parenchyma cells to undergo programmed cell death in response to proinflammatory cytokines such as TNF [106] as well as other agonists such as Fas as well as ROS and RNS [38,190].”

    From The Iron age of host–microbe interactions (2015) · cites this paper as [38]

  • Once released from hemoglobin, labile heme becomes pro-oxidant and cytotoxic.

    “Once released from hemoglobin, the redox activity of labile heme becomes pro-oxidant and cytotoxic [38,106,107,190] (Fig 4).”

    From The Iron age of host–microbe interactions (2015) · cites this paper as [38]

  • The pathogenic effects of extracellular hemoglobin and labile heme are countered by adaptive responses converging on heme catabolism by HO-1, providing tissue damage control and disease tolerance to systemic infections.

    “The pathogenic effects exerted by extracellular hemoglobin and labile heme are countered by adaptive responses that converge at the level of heme catabolism by HO-1 [38,219], providing tissue damage control and disease tolerance to systemic infections [103,105,106] (Fig 4).”

    From The Iron age of host–microbe interactions (2015) · cites this paper as [38]

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Authors
Gozzelino, R., Jeney, V., & Soares, M. P.
Affiliations
  • Instituto Gulbenkian de Ciência (PT)
  • Instituto Gulbenkian de Ciência, Oeiras, Portugal;
Venue
Annual Review of Pharmacology and Toxicology
Published
2010-02-01
Volume
50
Issue
1
Pages
323-354
ISSN
  • 0362-1642 (ISSN-L)
  • 1545-4304
OpenAlex
W2162853795
Cited by
1,241
References
237
Citations by year
2026: 66 · 2025: 61 · 2024: 55 · 2023: 72 · 2022: 92 · 2021: 114 · 2020: 101 · 2019: 60 · 2018: 87 · 2017: 75 · 2016: 65 · 2015: 99 · 2014: 77 · 2013: 69 · 2012: 74
FWCI
6.01
Type
journal article
Language
en
Open access
closed
Locations
  • The Annual Review of Pharmacology and Toxicology (publishedVersion)
  • PubMed (publishedVersion)
  • University of Debrecen Electronic Archive (University of Debrecen) (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Heme Oxygenase-1 and Carbon Monoxide
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Hemoglobin structure and function
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Porphyrin Metabolism and Disorders
Keywords
heme oxygenase-1, heme degradation, carbon monoxide, biliverdin, bilirubin, programmed cell death, cytoprotection, immune-mediated inflammatory diseases, stress response
MeSH terms
Animals, Biliverdine, Carbon Monoxide, Heme, Humans, Inflammation, Tumor Necrosis Factor-alpha, Gene Expression Regulation, Enzymologic, Apoptosis, Cytoprotection, Heme Oxygenase-1

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