GO:0071732 cellular response to nitric oxide: Signaling Pathway, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0071732 (cellular response to nitric oxide) describes how a single cell changes its state or activity in response to a nitric oxide (NO) stimulus, including changes in movement, secretion, enzyme production and gene expression.
• Nitric oxide is a short-lived, membrane-permeable free radical that acts as a signaling molecule and can also cause post-translational protein modifications such as S-nitrosylation.
• The cellular response to NO is highly context-dependent: it can be cytoprotective or cytotoxic, and it intersects with hypoxia signaling, DNA damage responses and senescence programs [2,5,8].
• Key molecular players include cytochrome c oxidase (mitochondrial respiration), ATM and iNOS in a ROS-dependent senescence axis, and β-cell-specific DNA damage response machinery [2,5,8].
• Dysregulated NO responses contribute to cancer biology, β-cell dysfunction in diabetes, endothelial and red blood cell signaling defects, and bone remodeling disorders [1,4,6,7].
• CRISPR knockout, point-mutation, knock-in and overexpression cell models, combined with CRISPR library screening and bioinformatics, are powerful tools for dissecting the causal genes in GO:0071732 [1,8].
Description
Nitric oxide (NO) is a gaseous free radical that functions as a signaling molecule in virtually every mammalian cell type. The Gene Ontology term GO:0071732, cellular response to nitric oxide, captures the set of processes by which a cell detects an NO stimulus and alters its state or activity in response, including changes in movement, secretion, enzyme production and gene expression. Because NO is short-lived and highly diffusible, its cellular effects are often spatially and temporally restricted to microdomains, which makes precise experimental control essential for mechanistic studies. Recent work has used electrochemical platforms to modulate NO spatiotemporally and profile tumor cell responses, underscoring the importance of controlled NO delivery in modern cell biology. The cellular response to NO is not a single linear pathway. NO can bind reversibly to cytochrome c oxidase and thereby influence mitochondrial respiration and the cellular response to hypoxia. It can also drive post-translational modifications such as S-nitrosylation that alter protein function and downstream signaling. In pancreatic β cells, NO participates in both protective and damaging responses to DNA damage, illustrating the dual role of this molecule in cell fate decisions [4,5]. In addition, an ATM-ROS-iNOS axis has been shown to regulate NO-mediated cellular senescence, linking NO to genome surveillance and aging-related phenotypes. For researchers, GO:0071732 provides a structured framework for interpreting transcriptomic, proteomic and functional screens in which NO is the perturbing stimulus. Because the response is cell-type specific and dose dependent, causal gene discovery requires perturbation tools such as CRISPR knockout, point mutation, knock-in and overexpression, ideally combined with library screening and bioinformatics analysis [1,8]. This article summarizes the definition, mechanisms, key genes, disease links and research methods relevant to GO:0071732, based on published literature.
cellular response to nitric oxide At A Glance
| GO ID | GO:0071732 |
|---|---|
| GO term | cellular response to nitric oxide |
| Ontology | biological_process |
| Synonym | none listed in QuickGO |
| Major function | Change in cellular state or activity in response to a nitric oxide stimulus, including movement, secretion, enzyme production and gene expression |
| Stimulus | Nitric oxide (NO), a short-lived free radical signaling molecule |
| Representative effectors | Cytochrome c oxidase, ATM, iNOS, β-cell DNA damage response proteins [2,5,8] |
| Disease relevance | Cancer, β-cell dysfunction, endothelial and red blood cell signaling, bone remodeling [1,4,6,7] |
| Research methods | Electrochemical NO modulation, fluorescent NO probes, CRISPR perturbation, omics profiling [1,3,8] |
What Is GO:0071732?
GO:0071732 (cellular response to nitric oxide) is a biological process term defined as 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 nitric oxide stimulus. In practical terms, it covers the sensing of NO, the immediate biochemical modifications it causes (for example, binding to metalloproteins or S-nitrosylation of cysteine residues), and the downstream transcriptional, metabolic and functional changes that follow [1,2,7].
Why Is cellular response to nitric oxide Important in Cell Biology?
GO:0071732 is important because nitric oxide sits at the intersection of redox biology, mitochondrial function, genome stability and cell fate. NO can reversibly inhibit cytochrome c oxidase and thereby shape the cellular response to hypoxia, which is relevant to vascular biology and ischemia. It can also trigger DNA damage responses and senescence through an ATM-ROS-iNOS axis, linking NO to aging and cancer suppression. In pancreatic β cells, NO has a dual role in DNA damage responses, which is directly relevant to diabetes pathogenesis [4,5]. Because NO signaling is spatially confined to microdomains in endothelium and red blood cells, understanding GO:0071732 also informs vascular physiology. Finally, NO contributes to rapid sclerostin protein loss after mechanical load, connecting this GO term to bone remodeling.
• NO modulates mitochondrial respiration by binding cytochrome c oxidase, integrating into hypoxia signaling.
• NO participates in DNA damage responses and can promote or protect against cellular senescence via the ATM-ROS-iNOS axis.
• In pancreatic β cells, NO has a dual role in DNA damage responses relevant to diabetes [4,5].
• Endothelial and red blood cell NO signaling depends on cellular microdomains, affecting vascular tone.
• NO contributes to rapid sclerostin protein loss following mechanical load, linking it to bone remodeling.
• Tumor cell responses to NO can be profiled using spatiotemporal electrochemical modulation.
• Ultra-rapid fluorescent probes enable real-time detection of NO in cellular systems.
• Dysregulated NO responses are implicated in cancer, metabolic disease and vascular disorders [1,4,7].
• CRISPR-based perturbation of NO-responsive genes enables causal inference in disease models [1,8].
• GO:0071732 provides a standardized annotation framework for comparing NO responses across cell types [1,2].
What Happens During cellular response to nitric oxide?
NO sensing and immediate biochemical modification
In simple terms: The cell first encounters nitric oxide and the molecule directly modifies proteins or binds to metal centers.
The cellular response to nitric oxide begins when NO reaches target proteins. Because NO is small and membrane-permeable, it can diffuse into cells and bind to heme-containing proteins such as cytochrome c oxidase, reversibly inhibiting mitochondrial respiration. NO can also modify cysteine thiols via S-nitrosylation, altering protein function and downstream signaling. These immediate events constitute the sensing phase of GO:0071732 and are often spatially restricted to cellular microdomains.
Mitochondrial and hypoxia signaling integration
In simple terms: NO changes how mitochondria use oxygen, which feeds into the cell's hypoxia response.
By binding cytochrome c oxidase, NO influences electron transport chain activity and oxygen consumption, thereby intersecting with the cellular response to hypoxia. This integration means that NO can act as a modulator of oxygen-sensing pathways, and cells must coordinate mitochondrial and hypoxic signaling to maintain homeostasis.
DNA damage response and senescence
In simple terms: NO can cause stress that activates DNA damage checkpoints and can push cells into senescence.
An ATM-ROS-iNOS axis has been shown to regulate NO-mediated cellular senescence, in which reactive oxygen species and NO cooperate to activate ATM-dependent DNA damage signaling. This pathway links GO:0071732 to genome surveillance and cell cycle arrest, and it can be either protective or deleterious depending on context.
Cell-type-specific effector programs
In simple terms: Different cells respond to NO in different ways, such as β cells, endothelial cells and red blood cells.
In pancreatic β cells, NO has a dual role in regulating the response to DNA damage, with implications for β-cell survival and function [4,5]. In endothelium and red blood cells, NO signaling is organized in cellular microdomains that ensure specificity. In bone, NO contributes to rapid sclerostin protein loss following mechanical load, demonstrating a tissue-specific effector program. These examples illustrate that GO:0071732 encompasses diverse downstream outputs.
Transcriptional and functional remodeling
In simple terms: The cell changes which genes are expressed and how it behaves.
Downstream of immediate NO sensing, cells alter gene expression, enzyme production, secretion and movement, which are explicitly included in the GO:0071732 definition. Spatiotemporal NO modulation platforms have been used to profile tumor cell responses, revealing dynamic changes in cell behavior. Ultra-rapid fluorescent probes allow real-time monitoring of these responses.
Key Genes Involved in GO:0071732 cellular response to nitric oxide
The following genes and proteins are representative participants in the cellular response to nitric oxide (GO:0071732), based on published literature.
| Gene | Major Role | Research Relevance |
|---|---|---|
| CYCS | Cytochrome c, component of the electron transport chain affected by NO binding to cytochrome c oxidase | Mitochondrial respiration and hypoxia integration |
| COX | Cytochrome c oxidase, direct NO target that modulates respiration | NO sensing and mitochondrial response |
| ATM | DNA damage checkpoint kinase activated in NO-mediated senescence | ATM-ROS-iNOS axis and senescence |
| NOS2 (iNOS) | Inducible nitric oxide synthase, produces NO in inflammatory and stress contexts | NO-mediated senescence and DNA damage |
| NOS3 (eNOS) | Endothelial nitric oxide synthase, produces NO in endothelium | Endothelial microdomain signaling |
| HBB | Hemoglobin beta, NO carrier and target in red blood cells | Red blood cell NO signaling |
| HBA1 | Hemoglobin alpha, NO carrier and target in red blood cells | Red blood cell NO signaling |
| SOST | Sclerostin, protein lost rapidly after mechanical load in an NO-dependent manner | Bone remodeling and mechanotransduction |
| TP53 | Tumor suppressor involved in DNA damage and senescence responses | NO-mediated senescence and cancer |
| CDKN1A | p21, cell cycle inhibitor downstream of DNA damage | Senescence and cell cycle arrest |
| INS | Insulin, β-cell functional output affected by NO | β-cell responses to NO [4,5] |
| PDX1 | Pancreatic β-cell transcription factor | β-cell identity and NO response |
| GCG | Glucagon, counter-regulatory hormone in islet biology | Islet response to NO |
| BAX | Pro-apoptotic Bcl-2 family member | NO-induced apoptosis and cell fate |
| CASP3 | Caspase-3, executioner of apoptosis | NO-induced cell death |
| NFE2L2 (NRF2) | Redox-sensitive transcription factor | Oxidative stress response to NO |
| HIF1A | Hypoxia-inducible factor 1 alpha | Integration of NO and hypoxia signaling |
How Is cellular response to nitric oxide Regulated?
The cellular response to nitric oxide is regulated at multiple levels. NO production itself is controlled by nitric oxide synthases, including inducible NOS (iNOS) and endothelial NOS (eNOS), whose expression and activity are responsive to inflammatory and mechanical cues [7,8]. The ATM-ROS-iNOS axis provides a feedback mechanism in which DNA damage and reactive oxygen species regulate iNOS and NO production, which in turn influences senescence. Spatial regulation occurs through cellular microdomains that confine NO signaling to specific subcellular compartments in endothelium and red blood cells. Additionally, NO can reversibly inhibit cytochrome c oxidase, creating a metabolic feedback loop that intersects with hypoxia signaling. These regulatory layers ensure that GO:0071732 is context-dependent and tightly controlled.
cellular response to nitric oxide and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| NOS2 (iNOS) | NO-mediated senescence and cancer | CRISPR knockout in cancer cell lines followed by NO donor treatment |
| ATM | DNA damage response and senescence | Point-mutation knock-in of ATM kinase-dead allele |
| INS | β-cell dysfunction in diabetes | Knockout or overexpression in β-cell lines [4,5] |
| SOST | Bone remodeling disorders | Knock-in of tagged SOST for protein stability studies |
| HBB | Red blood cell NO signaling | Point mutation of hemoglobin NO-binding residues |
Cancer and tumor cell responses
NO can influence tumor cell behavior, and spatiotemporal electrochemical modulation has been used to profile tumor cell responses to NO. The ATM-ROS-iNOS axis links NO to senescence, a tumor-suppressive mechanism, but NO can also promote survival or proliferation depending on context. These dual roles make GO:0071732 relevant to cancer biology and to the development of NO-based therapeutic strategies [1,8].
Diabetes and β-cell dysfunction
Pancreatic β cells are exquisitely sensitive to NO, and NO has a dual role in regulating β-cell responses to DNA damage [4,5]. Excessive or dysregulated NO can impair β-cell function and contribute to diabetes pathogenesis, whereas controlled NO signaling may be protective [4,5]. Understanding GO:0071732 in β cells is therefore important for metabolic disease research [4,5].
Vascular and red blood cell disorders
Endothelial and red blood cell NO signaling depends on cellular microdomains, and disruption of these domains can affect vascular tone and oxygen delivery. NO also modulates mitochondrial respiration via cytochrome c oxidase, which is relevant to ischemia and hypoxia-related vascular disease. These mechanisms connect GO:0071732 to cardiovascular and hematologic disorders [2,7].
Bone remodeling disorders
NO contributes to rapid sclerostin protein loss following mechanical load, linking GO:0071732 to bone mechanotransduction and remodeling. Dysregulation of this response could contribute to bone loss disorders, making it a potential target for skeletal disease research.
From cellular response to nitric oxide-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Is gene X required for NO-induced senescence? | CRISPR knockout cell line treated with NO donor |
| Does a specific phosphorylation site mediate NO response? | Point-mutation knock-in of phospho-dead or phospho-mimetic allele |
| How does a tagged NO-responsive protein behave dynamically? | Tagged knock-in (e.g., GFP or HiBiT) for live-cell imaging |
| Does overexpression of gene Y enhance NO sensitivity? | Doxycycline-inducible overexpression cell line |
| Which genes mediate tumor cell response to NO? | CRISPR library screening under spatiotemporal NO modulation |
| How does NO affect β-cell DNA damage response? | Knockout and overexpression in pancreatic β-cell lines [4,5] |
How to Study the cellular response to nitric oxide Process
| Method | What It Measures | Typical Application |
|---|---|---|
| Electrochemical NO modulation | Spatiotemporal NO delivery and cellular response | Tumor cell profiling |
| Fluorescent NO probe | Real-time NO detection | Live-cell imaging |
| CRISPR knockout | Loss-of-function phenotype | Causal gene testing |
| CRISPR point mutation | Specific residue function | Kinase-dead or phospho-mutant studies |
| CRISPR knock-in | Tagged or reporter allele | Live-cell imaging and protein stability |
| Overexpression | Gain-of-function phenotype | Sensitization studies |
| CRISPR library screening | Genome-wide regulators | Novel gene discovery |
| RNA-seq / proteomics | Transcriptional and protein changes | Pathway analysis [1,8] |
Spatiotemporal NO modulation and live-cell profiling
Electrochemical platforms can deliver NO with spatial and temporal control, enabling profiling of tumor cell responses. This approach is valuable for dissecting the dynamics of GO:0071732 and for identifying early versus late response genes.
Fluorescent NO probes for real-time detection
Ultra-rapid fluorescent probes allow real-time detection of NO in cellular systems, which is useful for validating NO production and diffusion in live cells. These probes complement genetic and pharmacological approaches to studying GO:0071732.
CRISPR perturbation and functional genomics
CRISPR knockout, point mutation, knock-in and overexpression enable causal testing of candidate genes in the NO response [1,8]. Combined with CRISPR library screening, these methods can identify novel regulators of GO:0071732 at scale.
Omics and bioinformatics integration
Transcriptomic and proteomic profiling after NO stimulation, followed by bioinformatics analysis, can reveal pathways and networks underlying GO:0071732 [1,8]. Integrating these data with CRISPR screening results strengthens causal inference [1,8].
How CRISPR Can Be Used to Study GO:0071732 cellular response to nitric oxide
Knockout
CRISPR knockout cell lines are used to test whether a candidate gene is required for the cellular response to nitric oxide. For example, knocking out ATM or NOS2 can reveal their roles in NO-mediated senescence. Knockout of β-cell genes can clarify their contribution to NO-induced DNA damage responses [4,5].
Point Mutation
Point-mutation knock-in allows precise testing of specific residues, such as phosphorylation sites or catalytic residues, in NO-responsive proteins. This approach is essential for distinguishing between scaffolding and enzymatic functions in GO:0071732.
Knock-in
Tagged knock-in of NO-responsive genes, such as SOST, enables real-time tracking of protein stability and localization after mechanical or NO stimulation. Knock-in reporters can also be used to monitor transcriptional responses to NO.
Overexpression
Overexpression of candidate genes can test gain-of-function effects on NO sensitivity, for example in tumor cells or β cells [1,4]. Inducible overexpression systems provide temporal control over the NO response.
How EDITGENE Supports cellular response to nitric oxide Research
Researchers studying cellular response to nitric oxide-related genes often need to determine whether a candidate gene is causally involved in NO sensing, signaling or downstream effector programs. EDITGENE provides a comprehensive suite of CRISPR-based cell model services to support such studies, from knockout and point mutation to knock-in, overexpression, library screening and bioinformatics.
Contact EDITGENE today to design your custom CRISPR model for cellular response to nitric oxide research.
Frequently Asked Questions About cellular response to nitric oxide
What is GO:0071732 cellular response to nitric oxide?
GO:0071732 is a Gene Ontology biological process term defined as any process that results in a change in state or activity of a cell as a result of a nitric oxide stimulus, including changes in movement, secretion, enzyme production and gene expression.
What genes are involved in cellular response to nitric oxide?
Representative genes include ATM, NOS2 (iNOS), NOS3 (eNOS), cytochrome c oxidase components, HBB, SOST and β-cell genes such as INS, based on published studies [2,4,5,6,7,8].
How does nitric oxide affect mitochondria?
Nitric oxide can reversibly bind cytochrome c oxidase, inhibiting mitochondrial respiration and integrating with the cellular response to hypoxia.
What is the role of nitric oxide in β cells?
Nitric oxide has a dual role in regulating β-cell responses to DNA damage, with implications for β-cell survival and diabetes [4,5].
How is nitric oxide linked to cellular senescence?
An ATM-ROS-iNOS axis regulates nitric oxide-mediated cellular senescence, linking NO to DNA damage signaling and cell cycle arrest.
What methods are used to study cellular response to nitric oxide?
Methods include electrochemical NO modulation, fluorescent NO probes, CRISPR knockout and knock-in, overexpression, omics profiling and bioinformatics [1,3,8].
Can CRISPR be used to study GO:0071732?
Yes, CRISPR knockout, point mutation, knock-in and overexpression are widely used to test causal roles of genes in the NO response [1,8].
What diseases are associated with nitric oxide signaling?
Nitric oxide signaling is associated with cancer, β-cell dysfunction in diabetes, vascular disorders and bone remodeling diseases [1,4,6,7].
How does nitric oxide affect bone remodeling?
Nitric oxide contributes to rapid sclerostin protein loss following mechanical load, linking it to bone mechanotransduction.
What is the difference between NO signaling in endothelium and red blood cells?
Both rely on cellular microdomains to confine NO signaling, but the specific protein partners and functional outputs differ between cell types.
Conclusion
GO:0071732 (cellular response to nitric oxide) is a biologically_process term that captures the diverse ways cells sense and respond to NO, from immediate biochemical modifications to long-term transcriptional and functional changes [1,2,7]. Its relevance spans cancer, diabetes, vascular biology and bone remodeling, making it a rich area for mechanistic and translational research [1,4,6,7,8]. CRISPR-based cell models and bioinformatics tools now enable precise causal dissection of the genes and pathways underlying this response [1,8]. Researchers can leverage these approaches to identify new therapeutic targets and biomarkers related to NO signaling.
References
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- 3. Parisi C et al.. 2024. A fluorescent probe with an ultra-rapid response to nitric oxide.. J Mater Chem B 12(21):5076-5084 PMID: 38567488
- 4. Broniowska KA et al.. 2014. β-Cell responses to nitric oxide.. Vitam Horm 95:299-322 PMID: 24559923
- 5. Oleson BJ et al.. 2018. Dual Role of Nitric Oxide in Regulating the Response of β Cells to DNA Damage.. Antioxid Redox Signal 29(14):1432-1445 PMID: 28978225
- 6. Buck HV et al.. 2024. Nitric oxide contributes to rapid sclerostin protein loss following mechanical load.. Biochem Biophys Res Commun 727:150315 PMID: 38950493
- 7. Leo F et al.. 2020. Cellular microdomains for nitric oxide signaling in endothelium and red blood cells.. Nitric Oxide 96:44-53 PMID: 31911123
- 8. Bagheri M et al.. 2017. ATM-ROS-iNOS axis regulates nitric oxide mediated cellular senescence.. Biochim Biophys Acta Mol Cell Res 1864(1):177-190 PMID: 27845209
