GO:0097468 programmed cell death in response to reactive oxygen species: Oxidative Stress-Induced Cell Death Pathway, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0097468 describes programmed cell death triggered specifically by reactive oxygen species (ROS), including singlet oxygen, superoxide, and oxygen free radicals [1, 5].
• ROS-induced programmed cell death is distinct from accidental necrosis and involves endogenous cellular signaling pathways such as ferroptosis, autophagy-dependent cell death, and apoptosis-like processes [5, 6, 8].
• Key molecular players include GPX4, ACSL4, NRF2, and mitochondrial regulators that sense and transduce oxidative stress signals [1, 5].
• This process is conserved across plants and animals, playing critical roles in development, immunity, and disease [3, 6, 7].
• Dysregulation of ROS-mediated programmed cell death contributes to cancer, ischemia-reperfusion injury, and neurodegenerative disorders [2, 4].
• CRISPR-based models (knockout, knock-in, overexpression) enable precise dissection of ROS-PCD pathways for therapeutic target discovery [1, 2].
Description
Programmed cell death in response to reactive oxygen species (GO:0097468) is a biological process in which cells activate endogenous death programs specifically in response to ROS stimuli, including singlet oxygen, superoxide, and oxygen free radicals [1, 5]. Unlike passive necrosis, this form of cell death requires active signaling and is genetically regulated, making it a critical area of study in oxidative stress biology, cancer research, and plant development [3, 6]. ROS are not merely damaging agents; they serve as signaling molecules that can trigger ferroptosis, autophagy-dependent cell death, and other regulated death modalities [5, 8]. Understanding how cells interpret ROS signals to execute programmed death is essential for developing therapies that either promote cell death in cancer or prevent it in degenerative diseases [2, 4]. This article synthesizes current knowledge on the mechanisms, key genes, disease relevance, and research methods for studying GO:0097468, with a focus on CRISPR-based approaches for functional validation.
programmed cell death in response to reactive oxygen species At A Glance
| GO ID | GO:0097468 |
|---|---|
| GO term | programmed cell death in response to reactive oxygen species |
| Ontology | biological_process |
| Synonym | PCD in response to oxidative stress; PCD in response to reactive oxygen species; programmed cell death in response to oxidative stress; reactive oxygen species-mediated PCD; reactive oxygen species-mediated programmed cell death |
| Major function | Execution of genetically regulated cell death triggered by ROS, including ferroptosis, autophagy-dependent death, and apoptosis-like pathways |
| Definition source | QuickGO |
| Related processes | Ferroptosis, autophagy, apoptosis, oxidative stress response |
| Taxonomic range | Eukaryotes, including plants and animals |
What Is GO:0097468?
GO:0097468 is defined as cell death resulting from activation of endogenous cellular processes and occurring as a result of a reactive oxygen species stimulus. Reactive oxygen species include singlet oxygen, superoxide, and oxygen free radicals. This term encompasses programmed cell death pathways that are specifically initiated or executed in response to oxidative stress, distinguishing them from accidental cell death caused by direct oxidative damage [1, 5].
Why Is programmed cell death in response to reactive oxygen species Important in Cell Biology?
GO:0097468 is critically important because ROS-mediated programmed cell death is a fundamental mechanism linking oxidative stress to tissue homeostasis, development, and disease. In cancer, evading ROS-induced cell death is a hallmark of tumor survival, while in ischemia-reperfusion injury and neurodegeneration, excessive ROS-PCD exacerbates tissue damage [2, 4]. In plants, ROS-PCD is essential for sexual reproduction and stress responses [3, 6]. Understanding this process provides therapeutic opportunities to modulate cell death for cancer treatment, organ protection, and crop improvement.
• Cancer therapy: inducing ROS-mediated programmed cell death (e.g., ferroptosis) selectively kills tumor cells [1, 5].
• Ischemia-reperfusion injury: inhibiting excessive ROS-PCD protects organs from damage.
• Neurodegeneration: dysregulated ROS-PCD contributes to neuronal loss in Alzheimer's and Parkinson's diseases.
• Plant development: ROS-PCD is required for sexual reproduction and pollen tube growth.
• Immune response: ROS-PCD in macrophages modulates inflammation and tissue repair.
• Ferroptosis: a key ROS-dependent PCD pathway with broad disease relevance.
• Autophagy-dependent cell death: ROS can trigger autophagic death in plants and animals.
• Drug discovery: targeting ROS-PCD regulators offers new therapeutic strategies [1, 2].
• CRISPR screening: enables identification of novel genes controlling ROS-PCD [1, 2].
• Biomarker development: ROS-PCD markers predict treatment response.
What Happens During programmed cell death in response to reactive oxygen species?
ROS sensing and signal initiation
In simple terms: Cells detect reactive oxygen species and start a death signal.
The process begins when cells sense elevated ROS levels, including superoxide and singlet oxygen, through redox-sensitive proteins such as NRF2 and mitochondrial sensors [1, 5]. This sensing triggers signaling cascades that activate endogenous death programs, distinguishing GO:0097468 from accidental necrosis. In plants, ROS produced by NADPH oxidases initiate programmed cell death during development and stress responses [6, 7].
Mitochondrial involvement and execution
In simple terms: Mitochondria amplify the death signal and release factors that dismantle the cell.
Mitochondria play a central role in ROS-mediated PCD by producing additional ROS and releasing pro-death factors [1, 5]. In ferroptosis, iron-dependent lipid peroxidation driven by mitochondrial ROS leads to membrane damage and cell death. In plants, mitochondrial ROS and calcium signaling converge to execute PCD.
Ferroptosis as a ROS-dependent PCD modality
In simple terms: Ferroptosis is a form of cell death caused by ROS-driven lipid damage.
Ferroptosis is a well-characterized ROS-mediated programmed cell death pathway that depends on iron and lipid peroxidation. Key regulators include GPX4, which detoxifies lipid peroxides, and ACSL4, which promotes lipid peroxidation [1, 5]. Inhibition of GPX4 or activation of ACSL4 sensitizes cells to ferroptosis, making this pathway a target for cancer therapy.
Autophagy-dependent cell death
In simple terms: Autophagy can either protect cells or cause death under ROS stress.
ROS can induce autophagy, and in some contexts, excessive autophagy leads to programmed cell death. In plants, autophagic cell death is involved in development and immunity. The interplay between autophagy and ROS-PCD is context-dependent and regulated by mTOR and other signaling pathways [2, 8].
Calcium signaling and proteolysis
In simple terms: Calcium signals activate enzymes that break down the cell.
Calcium signaling is a conserved regulator of ROS-mediated PCD in plants and animals. Calcium influx activates proteases and nucleases that execute cell death. In animal cells, calcium-dependent proteases such as calpains contribute to ROS-induced death.
Key Genes Involved in GO:0097468 programmed cell death in response to reactive oxygen species
The following genes and proteins are central to ROS-mediated programmed cell death, as supported by published literature.
| Gene | Major Role | Research Relevance |
|---|---|---|
| GPX4 | Detoxifies lipid peroxides, inhibits ferroptosis | Target for inducing ferroptosis in cancer [1, 5] |
| ACSL4 | Promotes lipid peroxidation, sensitizes to ferroptosis | Biomarker and therapeutic target [1, 5] |
| NRF2 | Master regulator of antioxidant response | Modulates ROS-PCD sensitivity [1, 5] |
| mTOR | Regulates autophagy and cell survival | Links ROS-PCD to metabolism [2, 8] |
| P2X4 | Purine receptor, paracrine signaling in tumor cell death | Mediates mTOR dependence after colon tumor cell death |
| ATG5 | Essential for autophagy | Required for autophagic cell death |
| ATG7 | Essential for autophagy | Required for autophagic cell death |
| BECN1 | Regulates autophagy initiation | Modulates ROS-PCD |
| RBOHD | Plant NADPH oxidase, produces ROS | Initiates ROS-PCD in plants [6, 7] |
| MCU | Mitochondrial calcium uniporter | Regulates calcium-dependent PCD |
| CASPASE-3 | Executioner protease in apoptosis | Can be activated by ROS |
| FTH1 | Ferritin heavy chain, iron storage | Regulates ferroptosis |
| TFRC | Transferrin receptor, iron uptake | Promotes ferroptosis |
| SLC7A11 | Cystine/glutamate antiporter, glutathione synthesis | Inhibits ferroptosis |
| KEAP1 | Negative regulator of NRF2 | Modulates antioxidant response |
| MAP1LC3B | Autophagosome marker | Monitors autophagic PCD |
| PARK7 | DJ-1, protects against oxidative stress | Neuroprotection |
How Is programmed cell death in response to reactive oxygen species Regulated?
ROS-mediated programmed cell death is tightly regulated by multiple signaling pathways. mTOR signaling integrates nutrient and energy status to control autophagy and cell survival, and mTOR dependence can emerge after tumor cell death via paracrine P2X4 stimulation. In plants, autophagy-related genes and calcium signaling regulate ROS-PCD during development and stress [7, 8]. The NRF2-KEAP1 pathway is a master regulator of antioxidant defenses, and its dysregulation alters sensitivity to ROS-PCD [1, 5]. Additionally, iron metabolism and lipid peroxidation pathways regulate ferroptosis, a key ROS-PCD modality.
programmed cell death in response to reactive oxygen species and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| GPX4 | Cancer, neurodegeneration | GPX4 knockout or overexpression cell lines [1, 5] |
| ACSL4 | Ferroptosis sensitivity in cancer | ACSL4 knockout cells [1, 5] |
| P2X4 | Colon cancer, mTOR dependence | P2X4 knockout or agonist-treated cells |
| NRF2 | Cancer chemoresistance | NRF2 knockout or KEAP1 mutant models [1, 5] |
| ATG5 | Autophagy-dependent cell death | ATG5 knockout cells |
Cancer
Evasion of ROS-mediated programmed cell death is a hallmark of cancer. Many tumors upregulate antioxidant systems (e.g., GPX4, NRF2) to avoid ferroptosis and apoptosis [1, 5]. Conversely, inducing ROS-PCD is a therapeutic strategy; nanoparticles delivering elesclomol and copper trigger cuproptosis and ROS-dependent death, enhancing immunotherapy. Colon tumor cell death can also create mTOR dependence through P2X4 signaling, revealing adaptive responses.
Ischemia-reperfusion injury
During ischemia-reperfusion, excessive ROS production triggers programmed cell death in cardiomyocytes, neurons, and macrophages, exacerbating tissue damage. Targeting ROS-PCD pathways, such as ferroptosis inhibition, is a promising strategy to protect organs [4, 5].
Neurodegenerative diseases
In Alzheimer's and Parkinson's diseases, oxidative stress and ROS-mediated PCD contribute to neuronal loss. Ferroptosis has been implicated in neurodegeneration, and antioxidants that mitigate ferroptosis are being explored as therapeutics.
Plant development and stress
In plants, ROS-PCD is essential for sexual reproduction, including pollen tube growth and embryo development. It also mediates responses to biotic and abiotic stress, and autophagy-dependent cell death is involved in immunity [6, 8].
From programmed cell death in response to reactive oxygen species-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Is GPX4 required for protection against ROS-induced ferroptosis? | GPX4 knockout cell line |
| Does a specific point mutation in ACSL4 alter lipid peroxidation? | ACSL4 point-mutation knock-in |
| Can overexpression of NRF2 rescue ROS-PCD? | NRF2 overexpression cell line |
| What is the role of P2X4 in paracrine mTOR activation after tumor cell death? | P2X4 knockout or tagged knock-in |
| Is autophagy required for ROS-PCD in plants? | ATG5 or ATG7 knockout plant lines |
| Does a disease-associated variant in PARK7 affect ROS-PCD? | PARK7 point-mutation knock-in |
How to Study the programmed cell death in response to reactive oxygen species Process
| Method | What It Measures | Typical Application |
|---|---|---|
| CRISPR knockout screening | Gene essentiality for ROS-PCD | Identify novel regulators [1, 5] |
| RNA-seq | Transcriptional changes | Pathway analysis [2, 6] |
| Proteomics | Protein abundance and modifications | Identify signaling nodes |
| Lipid peroxidation assay | Ferroptosis marker | Measure ROS-PCD |
| Live-cell imaging | ROS, calcium, autophagy dynamics | Monitor PCD progression [7, 8] |
| Flow cytometry | Cell death and ROS levels | Quantify PCD [1, 5] |
| Immunoblotting | Protein cleavage (e.g., caspase-3) | Confirm apoptosis |
| Bioinformatics | Pathway enrichment | Interpret omics data [1, 2] |
Measuring ROS levels and cell death
ROS levels can be measured using fluorescent probes such as DCFDA or MitoSOX, while cell death is assessed by viability assays, flow cytometry, and lipid peroxidation markers (e.g., C11-BODIPY) [1, 5]. These methods are essential to confirm that cell death is ROS-dependent and programmed.
Genetic screens and CRISPR libraries
CRISPR knockout libraries enable unbiased identification of genes that regulate ROS-PCD. For example, screens for ferroptosis regulators have identified GPX4, ACSL4, and SLC7A11 [1, 5]. Bioinformatics analysis of screen data reveals enriched pathways and networks.
Transcriptomics and proteomics
RNA-seq and proteomics can reveal global changes in gene expression and protein abundance during ROS-PCD [2, 6]. In plants, transcriptomic studies have identified ROS-PCD-associated genes during reproduction [3, 6].
Imaging and live-cell analysis
Live-cell imaging with fluorescent reporters for ROS, calcium, and autophagy (e.g., LC3-GFP) allows real-time monitoring of PCD progression [7, 8]. Mitochondrial dynamics and membrane integrity can be visualized using targeted probes.
How CRISPR Can Be Used to Study GO:0097468 programmed cell death in response to reactive oxygen species
Knockout
CRISPR knockout of genes such as GPX4, ACSL4, or ATG5 is used to determine their requirement for ROS-mediated programmed cell death [1, 5, 8]. For example, GPX4 knockout sensitizes cells to ferroptosis, while ATG5 knockout blocks autophagic cell death [5, 8].
Point Mutation
Point mutations can mimic disease-associated variants or alter catalytic activity. For instance, introducing a point mutation in ACSL4 can test its role in lipid peroxidation and ferroptosis [1, 5]. In plants, point mutations in RBOHD can dissect ROS production during PCD.
Knock-in
Knock-in of tagged versions (e.g., GFP, FLAG) allows tracking of proteins like GPX4 or LC3 during ROS-PCD [5, 8]. This enables localization and interaction studies in live cells.
Overexpression
Overexpression of antioxidant genes (e.g., NRF2, GPX4) or anti-apoptotic factors can rescue cells from ROS-PCD, confirming their protective roles [1, 5]. Conversely, overexpression of pro-death genes (e.g., ACSL4) enhances sensitivity.
How EDITGENE Supports programmed cell death in response to reactive oxygen species Research
Researchers studying programmed cell death in response to reactive oxygen species-related genes often need to determine whether a candidate gene is causally involved in ROS sensing, execution, or regulation. EDITGENE provides comprehensive CRISPR services to generate precise cellular and animal models, enabling functional validation of genes in GO:0097468.
Contact EDITGENE today to design your custom CRISPR model for programmed cell death in response to reactive oxygen species research.
Frequently Asked Questions About programmed cell death in response to reactive oxygen species
What is programmed cell death in response to reactive oxygen species?
It is a biological process (GO:0097468) where cells activate endogenous death programs specifically in response to ROS such as superoxide and singlet oxygen [1, 5].
What genes are involved in ROS-mediated programmed cell death?
Key genes include GPX4, ACSL4, NRF2, ATG5, and P2X4, among others [1, 2, 5, 8].
How is ferroptosis related to ROS-induced cell death?
Ferroptosis is a form of ROS-dependent programmed cell death driven by iron and lipid peroxidation, and it is a key modality under GO:0097468.
What diseases are associated with ROS-mediated programmed cell death?
Cancer, ischemia-reperfusion injury, neurodegenerative diseases, and plant stress responses are linked to this process [1, 2, 4, 5].
How can CRISPR be used to study ROS-PCD?
CRISPR knockout, knock-in, point mutation, and overexpression models allow functional dissection of genes regulating ROS-PCD [1, 2, 5].
What methods measure ROS-mediated programmed cell death?
Methods include ROS probes, lipid peroxidation assays, flow cytometry, live-cell imaging, and omics approaches [1, 5, 7].
Is autophagy involved in ROS-induced cell death?
Yes, autophagy can contribute to programmed cell death under ROS stress, and ATG genes are required in some contexts.
What is the role of GPX4 in ROS-PCD?
GPX4 detoxifies lipid peroxides and protects cells from ferroptosis; its inhibition promotes ROS-mediated death [1, 5].
How does NRF2 regulate ROS-mediated cell death?
NRF2 controls antioxidant gene expression and modulates sensitivity to ROS-PCD [1, 5].
Can ROS-PCD be targeted for cancer therapy?
Yes, inducing ROS-PCD (e.g., ferroptosis) is a promising strategy to kill cancer cells [1, 5].
Conclusion
GO:0097468 encompasses the genetically regulated cell death pathways triggered by reactive oxygen species, including ferroptosis, autophagy-dependent death, and apoptosis-like processes. Its relevance spans cancer, ischemia-reperfusion injury, neurodegeneration, and plant development. CRISPR-based models are indispensable for dissecting the molecular players and regulatory networks. EDITGENE provides end-to-end services to support functional studies of ROS-mediated programmed cell death, from knockout to library screening.
References
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- 2. Schmitt M et al.. 2022. Colon tumour cell death causes mTOR dependence by paracrine P2X4 stimulation.. Nature 612(7939):347-353 PMID: 36385525
- 3. Kurusu T et al.. 2017. Autophagy, programmed cell death and reactive oxygen species in sexual reproduction in plants.. J Plant Res 130(3):491-499 PMID: 28364377
- 4. Lu P et al.. 2026. Dynamic regulation and targeted interventions of macrophages in ischemia-reperfusion injury.. J Adv Res 80:705-723 PMID: 40348125
- 5. Kajarabille N et al.. 2019. Programmed Cell-Death by Ferroptosis: Antioxidants as Mitigators.. Int J Mol Sci 20(19) PMID: 31597407
- 6. Ye C et al.. 2021. Initiation and Execution of Programmed Cell Death and Regulation of Reactive Oxygen Species in Plants.. Int J Mol Sci 22(23) PMID: 34884747
- 7. Ren H et al.. 2021. Calcium Signaling in Plant Programmed Cell Death.. Cells 10(5) PMID: 34063263
- 8. Sakil MA et al.. 2025. Autophagic cell death in plants.. Plant Cell Physiol 66(10):1389-1396 PMID: 40883893
