GO:2000378 negative regulation of reactive oxygen species metabolic process: Redox Homeostasis, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:2000378 describes any process that stops, prevents, or reduces the frequency, rate, or extent of reactive oxygen species (ROS) metabolism, thereby protecting cells from oxidative damage.
• The term is a biological_process ontology node and is distinct from positive regulation of ROS metabolic process; it encompasses antioxidant defense, thiol redox buffering, and mitochondrial quality control.
• Key molecular players include NRF2/KEAP1, GPX4, and metabolic regulators such as FABP4 and KBTBD11 that indirectly suppress ROS accumulation.
• Loss of negative regulation of ROS metabolism is mechanistically linked to ferroptosis, insulin resistance, cancer progression, and mitochondrial dysfunction.
• CRISPR knockout, point-mutation, knock-in, and overexpression models are essential to dissect causal roles of ROS-regulatory genes in disease.
• EDITGENE provides end-to-end CRISPR cell model and library screening services to study GO:2000378-related genes at scale.
Description
Reactive oxygen species (ROS) are byproducts of normal cellular metabolism that, when unchecked, damage lipids, proteins, and DNA. The Gene Ontology term GO:2000378, negative regulation of reactive oxygen species metabolic process, captures the biological processes that restrain ROS accumulation and maintain redox homeostasis. This term is critical because ROS levels must be tightly controlled: too little ROS impairs signaling, while excess ROS drives pathology. Understanding the molecular machinery that executes this negative regulation is central to cancer biology, metabolic disease, and neurodegeneration research. The QuickGO definition states that GO:2000378 encompasses any process that stops, prevents, or reduces the frequency, rate, or extent of reactive oxygen species metabolic process. This broad definition includes enzymatic antioxidant systems, transcriptional programs such as NRF2 signaling, and mitochondrial quality-control pathways that limit ROS production. Researchers studying oxidative stress, ferroptosis, and metabolic reprogramming routinely annotate their findings to this term to connect mechanistic data to a standardized ontology.
negative regulation of reactive oxygen species metabolic process At A Glance
| GO ID | GO:2000378 |
|---|---|
| GO term | negative regulation of reactive oxygen species metabolic process |
| Ontology | biological_process |
| Synonym | negative regulation of reactive oxygen species metabolism; negative regulation of ROS metabolic process |
| Major function | Restrains ROS accumulation and oxidative damage by modulating antioxidant systems, mitochondrial ROS production, and redox signaling |
| Related processes | Ferroptosis, insulin signaling, NRF2-mediated antioxidant response, mitochondrial integrity |
| Key regulators | NRF2, KEAP1, GPX4, FABP4, KBTBD11, MacroD1 |
| Disease relevance | Cancer, insulin resistance, ferroptosis-associated pathologies, mitochondrial disorders |
What Is GO:2000378?
GO:2000378 is a biological_process term defined as any process that stops, prevents, or reduces the frequency, rate, or extent of reactive oxygen species metabolic process. In practice, it covers molecular events that lower ROS levels or limit ROS-generating reactions, including antioxidant enzyme activity, thiol redox buffering, and suppression of mitochondrial ROS emission.
Why Is negative regulation of reactive oxygen species metabolic process Important in Cell Biology?
GO:2000378 is important because failure to negatively regulate ROS metabolism is a common denominator in many human diseases. When this process is impaired, ROS accumulate and trigger oxidative damage, ferroptosis, and metabolic dysfunction. Conversely, enhancing this process can protect cells from oxidative stress and improve outcomes in models of cancer and metabolic disease. The term provides a standardized framework for annotating genes and pathways that suppress ROS, enabling cross-study comparisons and data integration in genomics and drug discovery.
• Protects cells from oxidative damage to lipids, proteins, and DNA.
• Prevents ferroptosis by limiting lipid peroxidation through GPX4 and related systems.
• Modulates insulin signaling and metabolic homeostasis.
• Suppresses tumor progression in cancers such as hepatocellular carcinoma and breast cancer.
• Maintains mitochondrial integrity and oxidative metabolism.
• Serves as a therapeutic target for antioxidant and ferroptosis-modulating drugs.
• Provides a standardized ontology annotation for redox biology studies.
• Enables functional genomics screens to identify novel ROS-suppressing genes.
• Links metabolic pathways such as lipid metabolism to redox control.
• Guides CRISPR model design for causal validation of candidate genes.
What Happens During negative regulation of reactive oxygen species metabolic process?
Antioxidant enzyme activation
In simple terms: Cells turn on enzymes that neutralize ROS.
A primary mechanism of GO:2000378 is the activation of antioxidant enzymes such as glutathione peroxidases and peroxiredoxins. GPX4, for example, reduces lipid hydroperoxides and thereby suppresses ROS-driven ferroptosis. NRF2 signaling induces a battery of antioxidant genes that lower ROS levels. In high-glucose conditions, activation of the KEAP1-NRF2 pathway by ellagic acid reduces oxidative stress in HepG2 cells.
Thiol redox buffering
In simple terms: Small molecules like glutathione soak up ROS.
Glutathione and thioredoxin systems provide reducing equivalents that maintain protein thiols and detoxify ROS. Negative regulation of ROS metabolism depends on the availability of NADPH and glutathione, which are supplied by metabolic pathways such as the pentose phosphate pathway. Disruption of this buffering system shifts cells toward oxidative stress and ferroptosis.
Mitochondrial quality control
In simple terms: Cells repair or remove damaged mitochondria to stop ROS leakage.
Mitochondria are major sources of ROS, and their integrity is maintained by quality-control mechanisms. MacroD1 sustains mitochondrial integrity and oxidative metabolism, thereby limiting excessive ROS production. NRF2 also regulates mitochondrial ROS in physiology and pathology, linking mitochondrial function to GO:2000378.
Metabolic suppression of ROS generation
In simple terms: Cells adjust metabolism to avoid making too much ROS.
Metabolic reprogramming can reduce ROS production. FABP4-mediated lipid metabolism promotes breast cancer progression and stem cell activity, and its inhibition may alter ROS balance. KBTBD11 suppresses hepatocellular carcinoma by targeting ENO1-mediated glycolysis, indirectly affecting ROS levels. These examples show that negative regulation of ROS metabolism intersects with lipid and glucose metabolism.
Key Genes Involved in GO:2000378 negative regulation of reactive oxygen species metabolic process
The following genes and proteins are experimentally linked to negative regulation of reactive oxygen species metabolic process (GO:2000378) based on the verified literature.
| Gene | Major Role | Research Relevance |
|---|---|---|
| NRF2 (NFE2L2) | Master transcription factor inducing antioxidant genes | Central to redox homeostasis; target for cancer and metabolic studies |
| KEAP1 | Negative regulator of NRF2; mediates NRF2 degradation | Mutations alter ROS regulation; drug target |
| GPX4 | Glutathione peroxidase that reduces lipid peroxides | Key ferroptosis suppressor; cancer metastasis studies |
| FABP4 | Lipid chaperone affecting ROS and stemness | Breast cancer progression and stem cell activity |
| KBTBD11 | E3 ligase targeting ENO1; suppresses glycolysis and ROS | Hepatocellular carcinoma tumor suppressor |
| MacroD1 | Maintains mitochondrial integrity and oxidative metabolism | Mitochondrial ROS regulation |
| ENO1 | Glycolytic enzyme; its targeting reduces ROS | Cancer metabolism and ROS crosstalk |
| RCC2 | Regulates GPX4 homeostasis; affects peritoneal metastasis | Gastric cancer metastasis |
| miR-223 | Modulates KEAP1-NRF2 pathway | Oxidative stress and insulin resistance |
| SOD1 | Superoxide dismutase; converts superoxide to H2O2 | Redox signaling and insulin resistance |
| CAT | Catalase; detoxifies H2O2 | Antioxidant defense |
| PRDX | Peroxiredoxins; reduce peroxides | Ferroptosis and redox regulation |
| TXN | Thioredoxin; maintains reduced protein thiols | Redox buffering |
| GCLC | Glutamate-cysteine ligase; glutathione synthesis | NRF2 target gene |
| GCLM | Glutamate-cysteine ligase modifier subunit | NRF2 target gene |
| NQO1 | Quinone oxidoreductase; NRF2 target | Antioxidant enzyme |
| HMOX1 | Heme oxygenase-1; NRF2 target | Antioxidant and anti-inflammatory |
| SLC7A11 | Cystine/glutamate antiporter; supports glutathione synthesis | Ferroptosis regulation |
How Is negative regulation of reactive oxygen species metabolic process Regulated?
GO:2000378 is regulated at multiple levels. Transcriptional control via NRF2/KEAP1 is a major mechanism: KEAP1 senses oxidative stress and releases NRF2 to induce antioxidant genes. Post-translational modifications, such as those mediated by MacroD1, influence mitochondrial integrity and ROS production. Metabolic regulators like FABP4 and KBTBD11 modulate ROS indirectly through lipid and glucose metabolism. Additionally, microRNAs such as miR-223 fine-tune the KEAP1-NRF2 axis. Insulin signaling is also modulated by ROS, with positive and negative regulation by reactive oxygen and nitrogen species.
negative regulation of reactive oxygen species metabolic process and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| GPX4 | Gastric cancer peritoneal metastasis; ferroptosis | Knockout and point-mutation cell lines; ferroptosis induction assays |
| FABP4 | Triple-negative breast cancer progression and stemness | Overexpression and knockout in breast cancer cell lines |
| KBTBD11 | Hepatocellular carcinoma suppression | Knockout and overexpression in HCC cell lines |
| NRF2 | Cancer chemoresistance; metabolic stress | Knockout and knock-in reporter lines; antioxidant response assays |
| MacroD1 | Mitochondrial dysfunction | Knockout and tagged knock-in for mitochondrial imaging |
Cancer
Negative regulation of ROS metabolism is frequently dysregulated in cancer. GPX4 inhibition suppresses gastric cancer peritoneal metastasis via RCC2 homeostasis, linking ROS regulation to metastasis. FABP4-mediated lipid metabolism promotes triple-negative breast cancer progression and stem cell activity, partly through ROS modulation. KBTBD11 suppresses hepatocellular carcinoma by targeting ENO1-mediated glycolysis, affecting ROS balance. NRF2 activation protects cancer cells from oxidative stress and contributes to chemoresistance.
Metabolic disorders
ROS negatively regulate insulin signaling, and impaired negative regulation of ROS metabolism contributes to insulin resistance. Ellagic acid ameliorates oxidative stress and insulin resistance in high glucose-treated HepG2 cells via the miR-223/KEAP1-Nrf2 pathway, demonstrating a therapeutic angle.
Ferroptosis and cell death
Ferroptosis is an iron-dependent form of cell death driven by lipid peroxidation. Negative regulation of ROS metabolism, particularly via GPX4, is a key suppressor of ferroptosis. Loss of GPX4 function leads to ferroptosis in various cancer models.
Mitochondrial dysfunction
MacroD1 sustains mitochondrial integrity and oxidative metabolism; its loss impairs negative regulation of ROS and may contribute to mitochondrial disorders. NRF2 also regulates mitochondrial ROS in physiology and pathology.
From negative regulation of reactive oxygen species metabolic process-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does loss of GPX4 cause ferroptosis? | GPX4 knockout cell line |
| Does FABP4 promote breast cancer stemness via ROS? | FABP4 overexpression and knockout in TNBC cells |
| Does KBTBD11 suppress HCC through ENO1? | KBTBD11 knockout and overexpression in HCC cells |
| Does NRF2 activation protect against oxidative stress? | KEAP1 knockout or NRF2 knock-in reporter |
| Does MacroD1 maintain mitochondrial integrity? | MacroD1 knockout with mitochondrial ROS sensors |
| Does miR-223 regulate KEAP1-NRF2? | miR-223 mimic/inhibitor with point mutations in KEAP1 |
How to Study the negative regulation of reactive oxygen species metabolic process Process
| Method | What It Measures | Typical Application |
|---|---|---|
| CRISPR knockout screen | Gene essentiality and ROS levels | Discovery of ROS regulators |
| DCFDA assay | Total cellular ROS | Validation of antioxidant response |
| MitoSOX | Mitochondrial superoxide | Mitochondrial ROS studies |
| C11-BODIPY | Lipid peroxidation | Ferroptosis detection |
| RNA-seq | Transcriptional changes | NRF2 target gene identification |
| Proteomics | Protein abundance and modifications | Redox proteomics |
| Western blot | Protein expression | GPX4, NRF2, KEAP1 levels |
| Immunofluorescence | Protein localization | Mitochondrial integrity |
CRISPR knockout screens
Genome-wide CRISPR knockout screens can identify genes whose loss increases ROS levels, thereby revealing negative regulators of ROS metabolism. These screens are powerful for discovering novel components of GO:2000378.
ROS measurement assays
Fluorescent probes such as DCFDA and MitoSOX measure total and mitochondrial ROS, respectively. These assays are used to validate whether a gene knockout or overexpression alters ROS levels.
Lipid peroxidation and ferroptosis assays
C11-BODIPY and malondialdehyde (MDA) assays quantify lipid peroxidation, a hallmark of ferroptosis when negative regulation of ROS metabolism fails.
Transcriptomics and proteomics
RNA-seq and proteomics can identify NRF2 target genes and other pathways regulated by ROS. These methods help map the transcriptional network of GO:2000378.
How CRISPR Can Be Used to Study GO:2000378 negative regulation of reactive oxygen species metabolic process
Knockout
CRISPR knockout of genes such as GPX4, NRF2, or KBTBD11 can abolish negative regulation of ROS metabolism, leading to increased ROS and ferroptosis. Knockout models are essential to establish causality.
Point Mutation
Point mutations in KEAP1 or NRF2 can disrupt the KEAP1-NRF2 interaction, altering the antioxidant response. CRISPR point-mutation models help dissect specific residues required for ROS regulation.
Knock-in
Knock-in of tagged versions of GPX4 or NRF2 allows live-cell imaging and interaction studies. Tagged knock-in models are valuable for tracking protein dynamics under oxidative stress.
Overexpression
Overexpression of FABP4 or KBTBD11 can suppress ROS and modulate cancer phenotypes. Overexpression models are used to test sufficiency of a gene in negative regulation of ROS metabolism.
How EDITGENE Supports negative regulation of reactive oxygen species metabolic process Research
Researchers studying negative regulation of reactive oxygen species metabolic process-related genes often need to determine whether a candidate gene is causally involved in ROS control or merely correlative. EDITGENE provides the CRISPR tools and cell models to answer these questions with rigor.
Contact EDITGENE today to design your custom CRISPR model for negative regulation of reactive oxygen species metabolic process research.
Frequently Asked Questions About negative regulation of reactive oxygen species metabolic process
What is GO:2000378?
GO:2000378 is a Gene Ontology biological_process term defined as any process that stops, prevents, or reduces the frequency, rate, or extent of reactive oxygen species metabolic process.
What genes are involved in negative regulation of reactive oxygen species metabolic process?
Key genes include NRF2, KEAP1, GPX4, FABP4, KBTBD11, and MacroD1, among others.
How is negative regulation of ROS metabolism linked to cancer?
Loss of negative regulation of ROS metabolism can promote ferroptosis resistance, metastasis, and tumor progression in cancers such as gastric, breast, and liver cancer.
What is the role of GPX4 in ROS regulation?
GPX4 reduces lipid peroxides and is a major suppressor of ferroptosis, thereby negatively regulating ROS metabolism.
How does NRF2 regulate ROS?
NRF2 is a transcription factor that induces antioxidant genes; its activity is controlled by KEAP1, which mediates its degradation under low ROS conditions.
What diseases are associated with impaired ROS negative regulation?
Ferroptosis-related diseases, insulin resistance, cancer, and mitochondrial disorders are associated with impaired negative regulation of ROS metabolism.
What experimental models are used to study GO:2000378?
CRISPR knockout, point-mutation, knock-in, and overexpression cell models, as well as ROS measurement assays, are commonly used.
How can CRISPR screens identify ROS regulators?
Genome-wide CRISPR knockout screens can identify genes whose loss increases ROS levels, revealing negative regulators of ROS metabolism.
What is the difference between positive and negative regulation of ROS metabolism?
Positive regulation increases ROS production or accumulation, while negative regulation reduces ROS levels or limits ROS-generating processes.
Why is GO:2000378 important for drug discovery?
It provides a standardized framework to annotate and target pathways that suppress ROS, which is relevant for antioxidant and ferroptosis-modulating therapies.
Conclusion
GO:2000378, negative regulation of reactive oxygen species metabolic process, is a central biological process that protects cells from oxidative damage and maintains redox homeostasis. Its dysregulation is implicated in cancer, metabolic disorders, ferroptosis, and mitochondrial dysfunction. Understanding the genes and mechanisms that execute this process is essential for developing targeted therapies. EDITGENE offers comprehensive CRISPR cell model and screening services to accelerate research on GO:2000378-related genes.
References
- 1. Kasai S et al.. 2020. Regulation of Nrf2 by Mitochondrial Reactive Oxygen Species in Physiology and Pathology.. Biomolecules 10(2) PMID: 32079324
- 2. Xie Y et al.. 2016. Ferroptosis: process and function.. Cell Death Differ 23(3):369-79 PMID: 26794443
- 3. Yu L et al.. 2024. FABP4-mediated lipid metabolism promotes TNBC progression and breast cancer stem cell activity.. Cancer Lett 604:217271 PMID: 39306229
- 4. Hu C et al.. 2025. Inhibition of glutathione peroxidase 4 suppresses gastric cancer peritoneal metastasis via regulation of RCC2 homeostasis.. Redox Biol 80:103519 PMID: 39908861
- 5. Ding X et al.. 2019. Ellagic acid ameliorates oxidative stress and insulin resistance in high glucose-treated HepG2 cells via miR-223/keap1-Nrf2 pathway.. Biomed Pharmacother 110:85-94 PMID: 30466006
- 6. Bashan N et al.. 2009. Positive and negative regulation of insulin signaling by reactive oxygen and nitrogen species.. Physiol Rev 89(1):27-71 PMID: 19126754
- 7. Hopp AK et al.. 2025. MacroD1 sustains mitochondrial integrity and oxidative metabolism.. Nat Commun 16(1):7595 PMID: 40817374
- 8. Liu Y et al.. 2025. KBTBD11 suppresses hepatocellular carcinoma by targeting ENO1-mediated glycolysis.. J Transl Med 23(1):1087 PMID: 41088215
