GO:0072593 reactive oxygen species metabolic process: Redox Signaling Pathway, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0072593 reactive oxygen species metabolic process describes all chemical reactions and pathways involving reactive oxygen species (ROS), which are molecules or ions formed by incomplete one-electron reduction of oxygen.
• ROS are produced mainly by mitochondrial electron transport chain complexes, especially complex I and complex III, and by NADPH oxidases, and they act as signaling molecules in hypoxia, immunity, and aging [1,4].
• ROS metabolic process is central to phagocyte microbicidal activity, signal transduction, gene expression, and oxidative damage to biopolymers such as DNA, proteins, and lipids [1,5].
• Dysregulated ROS metabolism contributes to diabetes complications, cardiovascular disease, neurodegeneration, ferroptosis, and cancer, making it a major therapeutic target [2,3,7,8].
• Key genes in this process include mitochondrial complex I subunits (NDUFS1, NDUFV1), SOD1, SOD2, CAT, GPX1, and NOX family members, which are frequently studied using CRISPR knockout and knock-in models [1,4,8].
• CRISPR-based knockout, point-mutation, knock-in, and overexpression cell models enable causal dissection of ROS metabolic genes in disease-relevant contexts [3,8].
Description
Reactive oxygen species (ROS) are chemically reactive molecules derived from molecular oxygen, including superoxide, hydrogen peroxide, and hydroxyl radicals, that are generated as byproducts of normal cellular metabolism and as signaling intermediates. The Gene Ontology term GO:0072593, reactive oxygen species metabolic process, encompasses the chemical reactions and pathways involving these species, from their enzymatic production to their detoxification and downstream effects on cellular macromolecules [1,4]. Because ROS can both modulate signal transduction and cause oxidative damage to DNA, proteins, and lipids, their metabolism is tightly regulated and is implicated in a broad spectrum of physiological and pathological states [1,5]. Research into ROS metabolic process has accelerated due to advances in mitochondrial biology, redox signaling, and immunometabolism [1,4,5]. Mitochondrial complex I is a major site of ROS production, particularly under hypoxia, where it contributes to redox signaling and cellular adaptation. In parallel, phagocytes generate ROS to kill ingested bacteria, and recent work shows that macrophages recycle phagocytosed bacteria to fuel immunometabolic responses, linking ROS metabolism to host defense and metabolic reprogramming. These findings underscore why GO:0072593 is a high-priority term for researchers studying aging, metabolic disease, infection, and cancer [1,2,8]. This article provides a research-grade overview of GO:0072593, integrating the QuickGO definition with verified PubMed literature. It covers the molecular players, regulatory mechanisms, disease associations, and experimental strategies, including CRISPR-based models, that are used to interrogate ROS metabolic pathways [1,3,8].
reactive oxygen species metabolic process At A Glance
| GO ID | GO:0072593 |
|---|---|
| GO term | reactive oxygen species metabolic process |
| Ontology | biological_process |
| Synonym | reactive oxygen species metabolism; ROS metabolic process |
| Definition | The chemical reactions and pathways involving a reactive oxygen species, any molecules or ions formed by the incomplete one-electron reduction of oxygen. |
| Major function | Production, interconversion, and detoxification of ROS; roles in phagocyte microbicidal activity, signal transduction, gene expression, and oxidative damage to biopolymers. |
| Key cellular sites | Mitochondria (electron transport chain complexes I and III), phagosomes, peroxisomes, and the cytosol. |
| Representative genes | NDUFS1, NDUFV1, SOD1, SOD2, CAT, GPX1, NOX1, NOX2, NOX4, and others. |
| Disease relevance | Diabetes complications, cardiovascular disease, neurodegeneration, ferroptosis, aging, and cancer. |
What Is GO:0072593?
GO:0072593 reactive oxygen species metabolic process is defined as the chemical reactions and pathways involving a reactive oxygen species, any molecules or ions formed by the incomplete one-electron reduction of oxygen. These species contribute to the microbicidal activity of phagocytes, regulation of signal transduction and gene expression, and the oxidative damage to biopolymers [1,5]. In practice, the term covers enzymatic and non-enzymatic reactions that produce, interconvert, or eliminate ROS, such as superoxide dismutase converting superoxide to hydrogen peroxide, catalase and glutathione peroxidase detoxifying hydrogen peroxide, and NADPH oxidases generating superoxide for signaling or host defense [1,4,8].
Why Is reactive oxygen species metabolic process Important in Cell Biology?
GO:0072593 is important because ROS metabolic process sits at the intersection of normal physiology and numerous diseases. ROS generated by mitochondrial complex I and other sources act as redox signals that influence gene expression, immune responses, and metabolic adaptation, while excessive ROS cause oxidative damage to DNA, proteins, and lipids [1,4]. This dual nature makes ROS metabolism a central mechanism in aging, diabetes, cardiovascular disease, neurodegeneration, and cancer, and it is a major focus for therapeutic development [2,7,8].
• ROS metabolic process regulates signal transduction and gene expression, influencing cell proliferation, differentiation, and survival.
• It is essential for phagocyte microbicidal activity, as ROS produced in phagosomes kill ingested bacteria.
• Mitochondrial complex I ROS production contributes to redox signaling in hypoxia and other stress conditions.
• Dysregulated ROS metabolism is a key pathogenic mechanism in diabetes mellitus and its complications.
• ROS metabolism is mechanistically linked to ferroptosis, an iron-dependent form of cell death.
• Age-related oxidative stress contributes to degenerative diseases and cardiac remodeling [7,8].
• Heavy metal exposure can disrupt ROS metabolism, leading to oxidative damage and toxicity.
• ROS metabolic pathways are attractive targets for therapeutic intervention in cancer, metabolic, and neurodegenerative diseases [1,8].
What Happens During reactive oxygen species metabolic process?
Generation of primary ROS by mitochondrial electron transport chain
In simple terms: Mitochondria leak electrons to oxygen, creating superoxide as a first ROS signal.
The mitochondrial electron transport chain, particularly complex I and complex III, is a major source of superoxide anion through incomplete one-electron reduction of oxygen [1,4]. Complex I ROS production is especially relevant under hypoxia, where it contributes to redox signaling and cellular adaptation. This primary ROS generation is the initiating step of the reactive oxygen species metabolic process and is tightly coupled to metabolic state.
Enzymatic production of ROS by NADPH oxidases
In simple terms: Dedicated enzymes called NOX proteins deliberately make ROS for signaling and defense.
NADPH oxidases (NOX family) catalyze the transfer of electrons from NADPH to molecular oxygen to produce superoxide, which can be converted to hydrogen peroxide and other species [1,5]. In phagocytes, NOX2 generates a respiratory burst of ROS that is essential for microbicidal activity against ingested bacteria. This enzymatic production is a regulated component of GO:0072593 and is distinct from mitochondrial ROS generation.
Interconversion and detoxification of ROS
In simple terms: Cells convert dangerous ROS into less harmful molecules and eventually to water.
Superoxide dismutases (SOD1 in cytosol and SOD2 in mitochondria) convert superoxide to hydrogen peroxide, which is then detoxified by catalase, glutathione peroxidases, and peroxiredoxins [1,8]. This interconversion and detoxification network prevents oxidative damage to biopolymers while preserving ROS for signaling. The balance between production and removal determines the net ROS burden and is a core feature of ROS metabolic process [1,8].
ROS as signaling molecules in gene expression and immunity
In simple terms: ROS can act as messengers that switch genes on or off and help immune cells fight infection.
ROS modify redox-sensitive cysteine residues in proteins, thereby regulating signal transduction pathways and transcription factors that control gene expression [1,4]. In macrophages, ROS produced during phagocytosis contribute to immunometabolic responses and bacterial killing. This signaling function is a key reason why GO:0072593 is annotated to regulation of signal transduction and gene expression.
Oxidative damage to biopolymers and ferroptosis
In simple terms: When ROS overwhelm defenses, they damage DNA, proteins, and lipids, and can trigger a form of cell death called ferroptosis.
Excessive ROS cause oxidative damage to DNA, proteins, and lipids, which is a hallmark of aging and degenerative diseases [1,8]. Lipid peroxidation is a central event in ferroptosis, an iron-dependent cell death pathway that is mechanistically linked to ROS metabolism. Thus, the same process that supports signaling can become pathogenic when dysregulated [1,3].
Key Genes Involved in GO:0072593 reactive oxygen species metabolic process
The following genes encode core enzymes and subunits that produce, interconvert, or detoxify reactive oxygen species, and they are widely studied in the context of GO:0072593.
| Gene | Major Role | Research Relevance |
|---|---|---|
| NDUFS1 | Mitochondrial complex I subunit; contributes to ROS production | Knockout models to dissect complex I ROS signaling in hypoxia and aging |
| NDUFV1 | Mitochondrial complex I subunit; electron transfer and ROS generation | Point mutations to study redox signaling and mitochondrial disease |
| SOD1 | Cytosolic superoxide dismutase; converts superoxide to hydrogen peroxide | Knockout and overexpression models for oxidative stress and neurodegeneration [1,8] |
| SOD2 | Mitochondrial superoxide dismutase; primary mitochondrial ROS detoxification | Knockout models for mitochondrial oxidative stress and aging [1,8] |
| CAT | Catalase; detoxifies hydrogen peroxide to water and oxygen | Knockout and knock-in models for peroxide signaling and disease |
| GPX1 | Glutathione peroxidase 1; reduces hydrogen peroxide and lipid peroxides | Knockout models for oxidative stress and metabolic disease [1,8] |
| NOX1 | NADPH oxidase; generates superoxide for signaling | Overexpression and knockout models in cancer and inflammation |
| NOX2 | Phagocyte NADPH oxidase; respiratory burst for microbial killing | Knockout models for immunodeficiency and infection |
| NOX4 | NADPH oxidase; constitutive hydrogen peroxide production | Knock-in and knockout models for fibrosis and cardiovascular disease |
| TXN | Thioredoxin; reduces oxidized proteins and regulates redox state | Knockout models for redox signaling and apoptosis |
| TXN2 | Mitochondrial thioredoxin; maintains mitochondrial redox balance | Knockout models for mitochondrial oxidative stress |
| PRDX3 | Peroxiredoxin 3; mitochondrial peroxide detoxification | Knockout models for mitochondrial ROS and aging |
| PRDX5 | Peroxiredoxin 5; broad peroxide detoxification | Overexpression models for cytoprotection |
| GCLC | Glutamate-cysteine ligase catalytic subunit; glutathione synthesis | Knockout models for glutathione depletion and oxidative stress [1,8] |
| GCLM | Glutamate-cysteine ligase modifier subunit; glutathione synthesis | Knockout models for redox imbalance |
| NFE2L2 | NRF2 transcription factor; master regulator of antioxidant response | Knockout and knock-in models for oxidative stress response [1,8] |
| KEAP1 | Negative regulator of NRF2; senses oxidative stress | Point mutations to study NRF2 activation |
| FOXO3 | Forkhead transcription factor; regulates antioxidant genes | Knockout models for aging and oxidative stress |
How Is reactive oxygen species metabolic process Regulated?
ROS metabolic process is regulated at multiple levels. The transcription factor NRF2 (encoded by NFE2L2) is a master regulator of antioxidant gene expression, and its activity is controlled by KEAP1, which senses oxidative stress [1,8]. Mitochondrial complex I ROS production is modulated by metabolic state and oxygen availability, contributing to redox signaling in hypoxia. In macrophages, phagocytosis and bacterial recycling reprogram immunometabolism and influence ROS production. Additionally, heavy metals can disrupt ROS metabolism by interfering with antioxidant enzymes and glutathione homeostasis. These regulatory layers ensure that ROS levels are kept within a range that supports signaling without causing excessive damage [1,8].
reactive oxygen species metabolic process and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| SOD2 | Mitochondrial oxidative stress, aging, neurodegeneration | Knockout and overexpression cell models [1,8] |
| NOX2 | Chronic granulomatous disease, immunodeficiency | Knockout phagocyte models |
| GPX1 | Diabetes complications, cardiovascular disease | Knockout and knock-in models [2,7] |
| NFE2L2 | Cancer, oxidative stress-related diseases | Knockout and point-mutation models [1,8] |
| ACSL4 | Ferroptosis, cancer | Knockout models for lipid peroxidation |
ROS metabolism in diabetes and metabolic complications
Oxidative stress resulting from imbalanced ROS metabolism plays a pathogenetic role in diabetes mellitus and its complications, including nephropathy, retinopathy, and neuropathy. Therapeutic approaches aimed at correcting oxidative stress are being explored to mitigate these complications. Heavy metal exposure can further exacerbate ROS-mediated metabolic dysfunction.
ROS metabolism in cardiovascular disease and aging
Metabolic remodeling in the aged and diseased heart is closely linked to altered ROS production and detoxification, contributing to cardiac dysfunction. Aging is associated with cumulative oxidative damage to biopolymers, and degenerative diseases often involve dysregulated ROS metabolism. Targeting ROS metabolic pathways is a promising strategy for cardioprotection and healthy aging [7,8].
ROS metabolism in ferroptosis and cancer
Ferroptosis is an iron-dependent cell death driven by lipid peroxidation, a process directly linked to ROS metabolism. Cancer cells often exhibit altered ROS metabolism to support proliferation and survival, making ROS-related enzymes potential therapeutic targets [1,3]. Understanding these mechanisms can inform the development of ferroptosis inducers or inhibitors for cancer therapy.
ROS metabolism in infection and immunity
Phagocytes rely on ROS production to kill ingested bacteria, and defects in ROS metabolism can lead to immunodeficiency. Macrophages recycle phagocytosed bacteria to fuel immunometabolic responses, linking ROS metabolism to host defense and metabolic adaptation. This connection highlights the importance of ROS metabolic process in infectious disease research.
From reactive oxygen species metabolic process-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does loss of SOD2 increase mitochondrial ROS and oxidative damage? | SOD2 knockout cell line [1,8] |
| Does a specific point mutation in KEAP1 alter NRF2 activation? | KEAP1 point-mutation knock-in |
| Can overexpression of GPX1 protect against oxidative stress? | GPX1 overexpression cell model [1,2] |
| Does NOX2 deficiency impair bacterial killing? | NOX2 knockout macrophages |
| Does a tagged NDUFS1 allow tracking of complex I ROS production? | Tagged knock-in of NDUFS1 |
| Can CRISPR library screening identify genes that modulate ROS levels? | Genome-wide CRISPR knockout library [1,3] |
How to Study the reactive oxygen species metabolic process Process
| Method | What It Measures | Typical Application |
|---|---|---|
| DCFDA / MitoSOX | Total and mitochondrial ROS | Screening for oxidative stress inducers or protectors [1,4] |
| Amplex Red | Hydrogen peroxide production | Quantifying NOX or SOD activity |
| RNA-seq | Transcriptional changes in ROS-related genes | Pathway analysis of oxidative stress responses [1,8] |
| CRISPR library screening | Genes that modulate ROS levels | Discovery of novel ROS regulators [1,3] |
| Redox proteomics | Oxidized proteins and cysteine residues | Mapping ROS signaling targets |
| Live-cell imaging with HyPer | Real-time hydrogen peroxide dynamics | Monitoring ROS signaling in live cells [1,4] |
| Immunoassays for 8-OHdG | Oxidative DNA damage | Assessing genotoxicity of ROS [1,8] |
| Seahorse assay | Mitochondrial respiration and ROS-linked metabolism | Linking ROS production to metabolic state |
Measuring ROS levels and oxidative damage
Fluorescent probes such as DCFDA, MitoSOX, and Amplex Red are used to quantify total and mitochondrial ROS in live cells [1,4]. Oxidative damage to DNA (8-OHdG), proteins (carbonyls), and lipids (malondialdehyde, 4-HNE) can be assessed by immunoassays and mass spectrometry [1,8]. These methods provide direct readouts of ROS metabolic process activity.
Genomic and transcriptomic profiling of ROS-related genes
RNA-seq and microarray analyses can reveal expression changes in antioxidant and ROS-producing genes under stress conditions [1,8]. CRISPR library screening coupled with ROS-sensitive reporters enables unbiased discovery of genes that regulate ROS metabolism [1,3]. Bioinformatics pathway enrichment using GO:0072593 helps interpret transcriptomic data.
Proteomic and redox proteomic approaches
Redox proteomics identifies oxidized cysteine residues and protein carbonylation, providing a snapshot of ROS-mediated signaling and damage. Targeted proteomics can quantify antioxidant enzymes such as SOD1, SOD2, CAT, and GPX1 [1,8]. These approaches link ROS metabolism to specific signaling networks.
Imaging and live-cell analysis
Live-cell imaging with genetically encoded redox sensors (e.g., HyPer, roGFP) allows real-time monitoring of hydrogen peroxide and glutathione redox state [1,4]. Mitochondrial-targeted sensors can specifically report complex I-derived ROS in hypoxia. Imaging in phagocytes can visualize ROS production during bacterial killing.
How CRISPR Can Be Used to Study GO:0072593 reactive oxygen species metabolic process
Knockout
CRISPR knockout of genes such as SOD2, GPX1, or NOX2 allows researchers to determine their causal role in ROS metabolic process and downstream phenotypes like oxidative damage or impaired bacterial killing [1,5,8]. Knockout cell models are essential for validating gene function in disease-relevant contexts.
Point Mutation
Point mutations in KEAP1 or NDUFS1 can mimic disease-associated variants and reveal how specific amino acid changes alter ROS production or NRF2 signaling [1,4]. CRISPR point-mutation models provide isogenic controls for precise mechanistic studies.
Knock-in
Knock-in of tagged versions of mitochondrial complex I subunits or antioxidant enzymes enables tracking of protein localization and ROS production in live cells. Knock-in reporters for NRF2 target genes can monitor antioxidant response activation.
Overexpression
Overexpression of antioxidant enzymes such as GPX1 or SOD1 can test whether increasing ROS detoxification protects against oxidative stress in disease models [1,2]. CRISPR-mediated overexpression via safe-harbor locus integration provides stable and tunable expression.
How EDITGENE Supports reactive oxygen species metabolic process Research
Researchers studying reactive oxygen species metabolic process-related genes often need to determine whether a candidate gene is causally involved in ROS production, detoxification, or signaling. EDITGENE provides a comprehensive suite of CRISPR-based cell model services to enable such causal studies with high precision and reproducibility.
Contact EDITGENE today to design your custom CRISPR model for reactive oxygen species metabolic process research.
Frequently Asked Questions About reactive oxygen species metabolic process
What is GO:0072593 reactive oxygen species metabolic process?
GO:0072593 is a Gene Ontology biological process term defined as the chemical reactions and pathways involving a reactive oxygen species, any molecules or ions formed by the incomplete one-electron reduction of oxygen.
What genes are involved in reactive oxygen species metabolic process?
Key genes include mitochondrial complex I subunits (NDUFS1, NDUFV1), SOD1, SOD2, CAT, GPX1, NOX family members, and NFE2L2, among others [1,4,8].
Why is reactive oxygen species metabolic process important?
It is important because ROS contribute to phagocyte microbicidal activity, signal transduction, gene expression, and oxidative damage to biopolymers, and dysregulation is linked to many diseases [1,5].
How does mitochondrial complex I produce ROS?
Complex I can leak electrons to oxygen during respiration, forming superoxide, especially under hypoxia, which contributes to redox signaling.
What is the role of ROS in ferroptosis?
ROS-driven lipid peroxidation is a central event in ferroptosis, an iron-dependent cell death pathway.
How is reactive oxygen species metabolic process regulated?
It is regulated by transcription factors such as NRF2, by KEAP1-mediated sensing of oxidative stress, and by metabolic and oxygen availability cues [1,4,8].
What diseases are associated with ROS metabolism?
Diabetes complications, cardiovascular disease, neurodegeneration, aging, ferroptosis-related cancer, and immunodeficiency are associated with altered ROS metabolism [2,3,7,8].
How can I study ROS metabolic process using CRISPR?
CRISPR knockout, point-mutation, knock-in, and overexpression models allow causal testing of ROS-related genes in disease-relevant cell types [1,3,8].
What methods measure ROS levels?
Fluorescent probes (DCFDA, MitoSOX), Amplex Red, redox proteomics, and live-cell imaging with HyPer are commonly used [1,4].
Does EDITGENE provide services for ROS metabolism research?
Yes, EDITGENE offers CRISPR knockout, point-mutation, knock-in, overexpression, library screening, and bioinformatics services for ROS metabolism studies [1,3,8].
Conclusion
GO:0072593 reactive oxygen species metabolic process is a fundamental biological process that governs the production, interconversion, and detoxification of ROS, with profound implications for immunity, signaling, aging, and disease [1,5,8]. Understanding its molecular players and regulatory mechanisms is essential for developing therapies targeting oxidative stress and related pathologies [2,7]. CRISPR-based cell models and advanced screening technologies provide powerful tools to dissect these pathways and accelerate discovery [1,3].
References
- 1. Xu X et al.. 2025. Mitochondria in oxidative stress, inflammation and aging: from mechanisms to therapeutic advances.. Signal Transduct Target Ther 10(1):190 PMID: 40500258
- 2. Darenskaya MA et al.. 2021. Oxidative Stress: Pathogenetic Role in Diabetes Mellitus and Its Complications and Therapeutic Approaches to Correction.. Bull Exp Biol Med 171(2):179-189 PMID: 34173093
- 3. Chen X et al.. 2021. Ferroptosis: machinery and regulation.. Autophagy 17(9):2054-2081 PMID: 32804006
- 4. Okoye CN et al.. 2023. Mitochondrial complex I ROS production and redox signaling in hypoxia.. Redox Biol 67:102926 PMID: 37871533
- 5. Lesbats J et al.. 2025. Macrophages recycle phagocytosed bacteria to fuel immunometabolic responses.. Nature 640(8058):524-533 PMID: 40011782
- 6. Fu Z et al.. 2020. The effects of heavy metals on human metabolism.. Toxicol Mech Methods 30(3):167-176 PMID: 31818169
- 7. Varghese LN et al.. 2024. Exploring the Link between Metabolic Remodelling and Reactive Oxygen Species in the Aged and Diseased Heart.. Front Biosci (Landmark Ed) 29(7):249 PMID: 39082360
- 8. Chaudhary MR et al.. 2023. Aging, oxidative stress and degenerative diseases: mechanisms, complications and emerging therapeutic strategies.. Biogerontology 24(5):609-662 PMID: 37516673
