GO:0071461 cellular response to redox state: Signaling Pathway, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0071461 cellular response to redox state describes how a cell changes its state or activity in response to the balance of oxidized versus reduced electron donors and acceptors, including glutathione (GSH/GSSG) and nicotinamide nucleotides (NAD+/NADH, NADP+/NADPH).
• Redox-sensitive cysteine thiols on proteins act as molecular switches that convert changes in the local redox environment into signaling outputs, such as STING activation or NMDA receptor potentiation.
• Mitochondria are central hubs of redox sensing and adaptation, and their function is remodeled by the cellular redox state in physiology and carcinogenesis.
• Redox state changes can mark cell-to-cell signaling during the hypersensitive response in plants, showing that this GO term is conserved beyond mammals.
• Dysregulated cellular redox responses contribute to cancer, inflammatory and viral diseases, and neurodegeneration-related synaptic dysfunction.
• CRISPR knockout, point-mutation, knock-in, and overexpression models enable causal testing of redox-response genes, while CRISPR library screening and bioinformatics map the underlying networks.
Description
GO:0071461 cellular response to redox state is a biological process term that captures any change in a cell's state or activity, such as movement, secretion, enzyme production, or gene expression, that occurs as a result of a stimulus indicating redox state. Redox state refers to the balance between oxidized and reduced forms of electron donors and acceptors in an organelle, cell, or organ, with glutathione (GSH/GSSG) and nicotinamide nucleotides (NAD+/NADH and NADP+/NADPH) being among the most important mediators. This term is therefore central to understanding how cells convert chemical information about their oxidation-reduction environment into coordinated biological responses. Researchers study GO:0071461 because redox imbalance is a common feature of many diseases and because redox-sensitive proteins often act as both sensors and effectors. For example, the redox state of the chloroplast marks cell-to-cell signaling during the hypersensitive response in plants, while in mammalian cells redox homeostasis maintained by GPX4 facilitates STING activation. Mitochondrial adaptation to the cellular redox state, termed mitoplasticity, further illustrates how redox signals shape physiology and carcinogenesis. Because redox responses are fast, reversible, and highly context-dependent, they are best studied with a combination of genetic perturbation and functional readouts. CRISPR-based models allow researchers to test whether specific redox-sensitive genes are causally involved in a given response, and to dissect the downstream pathways that define GO:0071461.
cellular response to redox state At A Glance
| GO ID | GO:0071461 |
|---|---|
| GO term | cellular response to redox state |
| Ontology | biological_process |
| Synonym | cellular redox signal response |
| Definition | Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a stimulus indicating redox state. |
| Key redox couples | GSH/GSSG, NAD+/NADH, NADP+/NADPH, plastoquinone |
| Major function | Convert redox imbalance into coordinated cellular responses, including signaling, gene expression, and metabolic adaptation |
| Representative processes | STING activation, NMDA receptor modulation, mitochondrial adaptation, hypersensitive response signaling |
| Disease relevance | Cancer, inflammatory and viral diseases, neurodegeneration-related synaptic dysfunction |
What Is GO:0071461?
In our own words, GO:0071461 cellular response to redox state is the collection of cellular processes triggered when a cell detects a change in the balance of oxidized and reduced molecules. The stimulus is not a single chemical but a shift in the redox state of electron donors and acceptors, often reflected in the ratios of GSH to GSSG or NAD+ to NADH and NADP+ to NADPH. The response can include changes in gene expression, enzyme activity, secretion, movement, or other cellular activities, and it is often mediated by redox-sensitive factors that translate the redox signal into a biological outcome.
Why Is cellular response to redox state Important in Cell Biology?
GO:0071461 is important because redox state is a universal parameter of cell physiology, and the ability to respond to it determines whether a cell adapts, survives, or dies. Redox-sensitive factors are targets of thiol compounds that can hinder SARS-CoV-2 replication and inflammatory responses, and redox homeostasis maintained by GPX4 is required for STING activation, linking redox biology to innate immunity. In cancer, RNA methylation and the cellular response to oxidative stress-promoting anticancer agents are interconnected, making redox responses relevant to therapy. Mitochondrial adaptation to the cellular redox state, or mitoplasticity, further shows that redox signals influence carcinogenesis and physiological performance. Even in the nervous system, lactate potentiates NMDA receptor currents via an intracellular redox mechanism targeting GluN2B subunits, with implications for synaptic plasticity. Thus, understanding GO:0071461 provides mechanistic insight into immunity, cancer, infection, and neural function.
• Redox state is a universal physiological parameter, and GO:0071461 explains how cells convert it into biological responses.
• Redox-sensitive factors can be targeted by thiol compounds to hinder SARS-CoV-2 replication and inflammatory responses.
• GPX4-dependent redox homeostasis facilitates STING activation, connecting redox biology to innate immunity.
• Oxidative stress-promoting anticancer agents intersect with RNA methylation and cellular redox responses.
• Mitochondrial adaptation to the cellular redox state, or mitoplasticity, is relevant to physiology and carcinogenesis.
• Lactate potentiates NMDA receptor currents via an intracellular redox mechanism targeting GluN2B subunits, with implications for synaptic plasticity.
• Chloroplast redox state changes mark cell-to-cell signaling during the hypersensitive response, showing conservation of redox signaling logic.
• The mitochondrial Na+/Ca2+ exchanger NCLX is implicated in the activation of hypoxia-inducible factors, linking redox and oxygen sensing.
• Tyrosine hydroxylase haploinsufficient mice show deteriorated behavior, immunity, and redox state under punctual stress, illustrating redox-disease connections.
What Happens During cellular response to redox state?
Detection of redox imbalance
In simple terms: The cell first senses that the balance between oxidized and reduced molecules has shifted.
The cellular response to redox state begins when the cell detects a change in the ratio of oxidized to reduced electron donors and acceptors, such as GSH/GSSG or NAD+/NADH. In plant cells, chloroplast redox state changes can mark cell-to-cell signaling during the hypersensitive response, indicating that redox detection is an early event in the response. In mammalian cells, redox-sensitive factors act as targets of thiol compounds that modulate viral replication and inflammatory responses, showing that detection often involves reactive cysteine residues.
Redox-sensitive protein switches
In simple terms: Specific proteins change shape or activity when the redox environment changes, acting like molecular switches.
Many proteins contain redox-sensitive cysteine thiols that can be oxidized or reduced, altering their activity. For example, lactate potentiates NMDA receptor currents via an intracellular redox mechanism targeting GluN2B subunits, demonstrating that a redox switch on a neurotransmitter receptor can directly modulate neuronal signaling. Similarly, GPX4 maintains redox homeostasis that facilitates STING activation, indicating that redox-sensitive proteins can control immune signaling pathways.
Mitochondrial adaptation and metabolic remodeling
In simple terms: Mitochondria adjust their function in response to the cell's redox state.
Mitochondria are both sources and targets of redox signals. Mitoplasticity describes the adaptation of the mitochondrion to the cellular redox state in physiology and carcinogenesis. The mitochondrial Na+/Ca2+ exchanger NCLX is implicated in the activation of hypoxia-inducible factors, linking mitochondrial redox and calcium handling to oxygen-sensing responses. These adaptations can change metabolic flux, ROS production, and cell survival.
Transcriptional and post-transcriptional responses
In simple terms: The cell changes which genes are made into proteins and how those transcripts are processed.
Redox signals can alter gene expression programs. RNA methylation and the cellular response to oxidative stress-promoting anticancer agents are connected, suggesting that post-transcriptional RNA modifications participate in the redox response. In the hypersensitive response, chloroplast redox state changes mark cell-to-cell signaling, which likely involves changes in gene expression and enzyme production. These transcriptional and post-transcriptional changes help the cell adapt to the new redox environment.
Physiological and behavioral outcomes
In simple terms: The response ultimately affects how the cell, tissue, or organism functions.
The cellular response to redox state can have organism-level consequences. Tyrosine hydroxylase haploinsufficient mice show deteriorated behavior, immunity, and redox state in response to punctual stress, indicating that redox responses influence behavior and immune function. In the nervous system, redox-dependent modulation of NMDA receptors by lactate has implications for synaptic plasticity. Thus, GO:0071461 encompasses outcomes ranging from synaptic changes to immune activation and stress responses.
Key Genes Involved in GO:0071461 cellular response to redox state
The following genes and proteins are representative participants in cellular response to redox state (GO:0071461), based on the verified literature.
| Gene | Major Role | Research Relevance |
|---|---|---|
| GPX4 | Maintains redox homeostasis to facilitate STING activation | Links redox biology to innate immunity; target for immune modulation |
| STING | Redox-sensitive immune signaling adaptor activated downstream of GPX4 | Model for redox-controlled innate immune activation |
| GluN2B | NMDA receptor subunit modulated by intracellular redox mechanisms | Target for synaptic plasticity and neurodegeneration research |
| NCLX | Mitochondrial Na+/Ca2+ exchanger implicated in hypoxia-inducible factor activation | Connects mitochondrial redox and calcium to oxygen sensing |
| Tyrosine hydroxylase | Catecholamine synthesis enzyme; haploinsufficiency alters redox state and behavior | Model for stress-related behavioral and immune redox phenotypes |
| Mitochondrial respiratory chain components | Source and target of redox signals; adapt via mitoplasticity | Central to carcinogenesis and physiological adaptation |
| Chloroplast redox proteins | Mark cell-to-cell signaling during hypersensitive response | Plant model for redox signaling in immunity |
| Thiol-sensitive viral factors | Targets of thiol compounds that hinder SARS-CoV-2 replication | Antiviral and anti-inflammatory redox targeting |
| RNA methylation machinery | Connects oxidative stress responses to RNA modification | Cancer therapy response and redox crosstalk |
| Glutathione system (GSH/GSSG) | Major redox buffer defining cellular redox state | Readout and modulator of redox responses |
| NAD+/NADH and NADP+/NADPH pools | Electron carrier couples reflecting redox state | Metabolic and redox signaling research |
| Hypoxia-inducible factors | Activated in a process involving NCLX and mitochondrial redox | Oxygen sensing and cancer biology |
| STING pathway kinases | Downstream of redox-sensitive STING activation | Innate immunity and autoinflammation models |
| NMDA receptor complex | Redox-sensitive ion channel in neurons | Synaptic plasticity and neurotoxicity studies |
| Catecholamine neurons | Affected by tyrosine hydroxylase haploinsufficiency and redox state | Behavioral and immune redox studies |
| Plant hypersensitive response signaling proteins | Mediate cell-to-cell signaling marked by chloroplast redox changes | Plant immunity and redox signaling research |
How Is cellular response to redox state Regulated?
Cellular response to redox state is regulated at multiple levels. Redox-sensitive cysteine residues on proteins such as GluN2B can be modified by the intracellular redox environment, changing receptor function. GPX4 maintains redox homeostasis that is required for STING activation, indicating that antioxidant enzymes set the threshold for immune signaling. Mitochondrial adaptation, or mitoplasticity, adjusts the organelle to the cellular redox state in physiology and carcinogenesis. Thiol compounds can target redox-sensitive factors to hinder SARS-CoV-2 replication and inflammatory responses, showing that pharmacological modulation of redox state is possible. In plants, chloroplast redox state changes mark cell-to-cell signaling during the hypersensitive response, suggesting that redox regulation is integrated with developmental and immune signaling. RNA methylation also intersects with the cellular response to oxidative stress-promoting anticancer agents, adding a post-transcriptional layer of regulation.
cellular response to redox state and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| GPX4 | Innate immunity and STING activation; redox homeostasis | GPX4 knockout or point-mutation cells with STING reporter |
| GluN2B | Synaptic plasticity and neurodegeneration-related NMDA signaling | GluN2B knock-in with redox-sensitive cysteine mutation |
| NCLX | Hypoxia-inducible factor activation and cancer adaptation | NCLX knockout cells under hypoxia |
| Tyrosine hydroxylase | Stress-related behavioral and immune phenotypes | Tyrosine hydroxylase haploinsufficient mouse model |
| STING | Inflammatory and antiviral innate immunity | STING knockout or tagged knock-in for activation assays |
Cancer and oxidative stress
Redox responses are deeply intertwined with cancer biology. RNA methylation and the cellular response to oxidative stress-promoting anticancer agents are connected, suggesting that redox-sensitive pathways influence therapy response. Mitochondrial adaptation to the cellular redox state, or mitoplasticity, is relevant to carcinogenesis, meaning that redox-driven mitochondrial remodeling may contribute to tumor progression. Hypoxia-inducible factors, which are activated in a process involving the mitochondrial Na+/Ca2+ exchanger NCLX, are also central to cancer adaptation. Thus, GO:0071461 is a framework for understanding how cancer cells cope with oxidative stress.
Infectious and inflammatory diseases
Redox-sensitive factors are targets of thiol compounds that hinder SARS-CoV-2 replication and inflammatory responses, linking GO:0071461 to antiviral and anti-inflammatory strategies. GPX4-dependent redox homeostasis facilitates STING activation, which is a key innate immune pathway, so redox imbalance could impair or amplify immune responses. These findings suggest that modulating cellular redox responses may be therapeutically useful in infections and inflammatory conditions.
Neurodegeneration and synaptic dysfunction
In the nervous system, lactate potentiates NMDA receptor currents via an intracellular redox mechanism targeting GluN2B subunits, with implications for synaptic plasticity. Because NMDA receptor dysfunction is associated with neurodegeneration and neurotoxicity, redox-dependent modulation of GluN2B may contribute to disease mechanisms. Tyrosine hydroxylase haploinsufficient mice show deteriorated behavior, immunity, and redox state under punctual stress, further connecting redox responses to neurological and behavioral phenotypes.
From cellular response to redox state-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Is GPX4 required for STING activation? | GPX4 knockout cell line with STING activation readout |
| Does a specific cysteine mediate redox modulation of GluN2B? | GluN2B point-mutation knock-in |
| How does NCLX contribute to hypoxia-inducible factor activation? | NCLX knockout or overexpression under hypoxia |
| What is the role of tyrosine hydroxylase dosage in redox state and behavior? | Tyrosine hydroxylase haploinsufficient mouse |
| Can thiol compounds modulate redox-sensitive viral factors? | Overexpression of redox-sensitive factors with thiol treatment |
| Which genes mediate the cellular response to redox state? | CRISPR library screening with redox stress selection |
How to Study the cellular response to redox state Process
| Method | What It Measures | Typical Application |
|---|---|---|
| RNA sequencing | Changes in gene expression during redox response | Identify transcriptional programs in GO:0071461 |
| Redox proteomics | Oxidation state of cysteine residues on proteins | Discover redox-sensitive effectors and drug targets |
| STING activation assay | Innate immune signaling downstream of GPX4 | Test redox control of immunity |
| Electrophysiology | NMDA receptor currents modulated by redox state | Study synaptic plasticity and GluN2B function |
| Hypoxia-inducible factor reporter | Activation of hypoxia-inducible factors involving NCLX | Investigate mitochondrial redox and oxygen sensing |
| CRISPR knockout | Loss-of-function phenotype for candidate genes | Test causal roles in redox response |
| CRISPR point mutation | Effect of specific redox-sensitive residues | Dissect molecular switches in redox signaling |
| CRISPR library screening | Genome-wide modifiers of redox sensitivity | Identify novel regulators of GO:0071461 |
Genomic and transcriptomic profiling
RNA sequencing can reveal changes in gene expression that occur during the cellular response to redox state, including pathways related to oxidative stress and RNA methylation. In plant systems, transcriptomic analysis of the hypersensitive response can identify genes whose expression is coordinated with chloroplast redox changes. These methods help define the transcriptional output of GO:0071461.
Proteomic and redox-proteomic approaches
Redox-proteomics can identify proteins with oxidized cysteine residues, revealing redox-sensitive effectors such as those targeted by thiol compounds. Proteomic analysis of mitochondrial fractions can detect adaptation to the cellular redox state, as described by mitoplasticity. These approaches map the protein-level changes that define the response.
Functional assays for redox-sensitive signaling
STING activation assays can test whether GPX4-dependent redox homeostasis is required for innate immune signaling. Electrophysiological recordings can measure NMDA receptor currents and their modulation by intracellular redox mechanisms targeting GluN2B. Hypoxia-inducible factor reporter assays can assess the role of NCLX in oxygen-sensing responses.
Genetic perturbation and screening
CRISPR knockout, point-mutation, knock-in, and overexpression models allow causal testing of candidate redox-response genes. CRISPR library screening can identify genes that modify sensitivity to oxidative stress-promoting agents or redox imbalance. Bioinformatics integration of screening data with pathway databases can prioritize redox-sensitive networks for follow-up.
How CRISPR Can Be Used to Study GO:0071461 cellular response to redox state
Knockout
CRISPR knockout of genes such as GPX4 or NCLX can test their requirement in cellular response to redox state. For example, GPX4 knockout would be expected to impair STING activation if redox homeostasis is essential. NCLX knockout can reveal its role in hypoxia-inducible factor activation. Knockout models are also useful for validating hits from CRISPR library screens.
Point Mutation
Point mutations can be introduced into redox-sensitive cysteine residues, such as those in GluN2B, to test whether a specific thiol mediates redox modulation of NMDA receptor currents. This approach provides precise mechanistic insight that knockout cannot, because it preserves protein expression while altering a single redox switch.
Knock-in
Knock-in of tagged or reporter alleles allows monitoring of redox-responsive proteins in their native context. For example, a tagged STING knock-in could be used to follow activation downstream of GPX4-dependent redox homeostasis. Knock-in of disease-associated variants can also model how redox responses are altered in human disease.
Overexpression
Overexpression of redox-sensitive factors can amplify the cellular response to redox state and facilitate biochemical assays. For instance, overexpressing thiol-sensitive viral factors can test whether thiol compounds hinder SARS-CoV-2 replication and inflammatory responses. Overexpression of mitochondrial proteins can probe mitoplasticity and adaptation to the cellular redox state.
How EDITGENE Supports cellular response to redox state Research
Researchers studying cellular response to redox state-related genes often need to determine whether a candidate gene is causally involved in the response, and CRISPR-based models provide the most direct way to test this. By combining knockout, point-mutation, knock-in, and overexpression strategies with functional readouts such as STING activation, NMDA receptor currents, or hypoxia-inducible factor reporters, it is possible to dissect the molecular logic of GO:0071461. EDITGENE provides these services to accelerate redox biology research.
Contact EDITGENE today to design your custom CRISPR model for cellular response to redox state research.
Frequently Asked Questions About cellular response to redox state
What is GO:0071461 cellular response to redox state?
GO:0071461 is a biological process term describing any change in a cell's state or activity, such as movement, secretion, enzyme production, or gene expression, that occurs as a result of a stimulus indicating redox state, which is the balance of oxidized versus reduced electron donors and acceptors.
What genes are involved in cellular response to redox state?
Representative genes include GPX4, STING, GluN2B, NCLX, and tyrosine hydroxylase, based on studies linking them to redox-sensitive signaling, innate immunity, synaptic function, and stress responses.
Why is redox state important for cells?
Redox state reflects the balance of molecules such as GSH/GSSG and NAD+/NADH, and changes in this balance can trigger adaptive responses that influence immunity, metabolism, and survival.
How does GPX4 relate to STING activation?
GPX4 maintains redox homeostasis that facilitates STING activation, linking antioxidant defense to innate immune signaling.
What is the role of mitochondria in cellular response to redox state?
Mitochondria adapt to the cellular redox state through a process called mitoplasticity, which is relevant to physiology and carcinogenesis, and mitochondrial proteins such as NCLX are implicated in hypoxia-inducible factor activation.
Can redox state affect synaptic plasticity?
Yes, lactate potentiates NMDA receptor currents via an intracellular redox mechanism targeting GluN2B subunits, with implications for synaptic plasticity.
How can CRISPR help study cellular response to redox state?
CRISPR knockout, point mutation, knock-in, and overexpression models allow causal testing of redox-response genes, while CRISPR library screening can identify genome-wide modifiers.
What diseases are linked to redox state dysregulation?
Redox dysregulation has been linked to cancer, inflammatory and viral diseases, and neurodegeneration-related synaptic dysfunction.
What methods are used to study GO:0071461?
Common methods include RNA sequencing, redox proteomics, STING activation assays, electrophysiology, hypoxia-inducible factor reporters, and CRISPR-based perturbation.
Is cellular response to redox state conserved in plants?
Yes, chloroplast redox state changes mark cell-to-cell signaling during the hypersensitive response in plants, indicating conservation of redox signaling principles.
Conclusion
GO:0071461 cellular response to redox state is a fundamental biological process that converts information about the oxidation-reduction environment into coordinated cellular outcomes. The verified literature shows that redox-sensitive proteins such as GPX4, STING, GluN2B, and NCLX participate in this response, with implications for immunity, cancer, infection, and synaptic function. Understanding these mechanisms requires precise genetic models and functional assays, and CRISPR-based approaches are well suited to dissect the causal roles of individual redox-response genes. As redox biology continues to expand, GO:0071461 will remain a key framework for integrating molecular, cellular, and disease-level findings.
References
- 1. Lukan T et al.. 2023. Chloroplast redox state changes mark cell-to-cell signaling in the hypersensitive response.. New Phytol 237(2):548-562 PMID: 35946378
- 2. Jia M et al.. 2020. Redox homeostasis maintained by GPX4 facilitates STING activation.. Nat Immunol 21(7):727-735 PMID: 32541831
- 3. Ponzetti M et al.. 2023. RNA methylation and cellular response to oxidative stress-promoting anticancer agents.. Cell Cycle 22(8):870-905 PMID: 36648057
- 4. De Angelis M et al.. 2026. Redox-sensitive factors as targets of thiol compounds to hinder SARS-CoV-2 replication and inflammatory response.. Antimicrob Agents Chemother 70(9):e0051826 PMID: 42524834
- 5. Jose C et al.. 2013. Mitoplasticity: adaptation biology of the mitochondrion to the cellular redox state in physiology and carcinogenesis.. Antioxid Redox Signal 18(7):808-49 PMID: 22989324
- 6. Fiumelli H et al.. 2026. Lactate potentiates NMDA receptor currents via an intracellular redox mechanism targeting GluN2B subunits: implications for synaptic plasticity.. J Physiol 604(10):3934-3963 PMID: 41811234
- 7. Félix J et al.. 2023. In Response to a Punctual Stress Male and Female Tyrosine Hydroxylase Haploinsufficient Mice Show a Deteriorated Behavior, Immunity, and Redox State.. Int J Mol Sci 24(8) PMID: 37108496
- 8. Choya-Foces C et al.. 2024. The mitochondrial Na(+)/Ca(2+) exchanger NCLX is implied in the activation of hypoxia-inducible factors.. Redox Biol 77:103364 PMID: 39341036
