GO:1902176 negative regulation of oxidative stress-induced intrinsic apoptotic signaling pathway: Mechanism, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:1902176 describes any process that stops, prevents, or reduces the frequency, rate, or extent of an oxidative stress-induced intrinsic apoptotic signaling pathway.
• This biological process is a negative regulator of mitochondria-dependent apoptosis triggered by reactive oxygen species (ROS).
• Key molecular players include anti-apoptotic BCL2 family proteins, antioxidant enzymes, and stress-responsive transcription factors.
• Dysregulation of this pathway contributes to cancer chemoresistance, neurodegeneration, and age-related pathologies [1, 4].
• Experimental models for studying this term include CRISPR knockout, point mutation, knock-in, and overexpression cell lines [1, 4].
• The term is relevant to senescence-like cell cycle arrest, retinal pericyte pathology, and host-response to infection [1, 2, 3].
Description
The Gene Ontology (GO) term GO:1902176, negative regulation of oxidative stress-induced intrinsic apoptotic signaling pathway, defines a biological process that counteracts the mitochondria-dependent apoptotic cascade initiated by oxidative stress. Oxidative stress arises when reactive oxygen species (ROS) overwhelm cellular antioxidant defenses, leading to damage of lipids, proteins, and DNA, and triggering intrinsic apoptosis through mitochondrial outer membrane permeabilization. The intrinsic apoptotic pathway is tightly regulated by BCL2 family proteins, and its negative regulation is essential for cell survival under stress conditions. This process is critical for understanding how cells resist death in diseases such as cancer, where upregulation of anti-apoptotic mechanisms promotes chemoresistance, and in neurodegeneration, where failure to inhibit apoptosis leads to neuronal loss [1, 4]. Research into GO:1902176 has been advanced by studies on senescence-like cell cycle arrest in cancer, diabetic retinopathy, and infection-induced host responses [1, 2, 3]. The term is also relevant to exercise-induced rejuvenation of bone marrow mesenchymal stem cells, where inhibition of inflammatory and senescence-related factors is observed. Understanding the molecular players and regulatory mechanisms of this process is essential for developing targeted therapies that modulate cell survival.
negative regulation of oxidative stress-induced intrinsic apoptotic signaling pathway At A Glance
| GO ID | GO:1902176 |
|---|---|
| GO term | negative regulation of oxidative stress-induced intrinsic apoptotic signaling pathway |
| Ontology | biological_process |
| Synonym | down regulation of intrinsic apoptotic signaling pathway in response to oxidative stress; down-regulation of intrinsic apoptotic signaling pathway in response to oxidative stress; downregulation of intrinsic apoptotic signaling pathway in response to oxidative stress; inhibition of intrinsic apoptotic signaling pathway in response to oxidative stress; negative regulation of intrinsic apoptotic signaling pathway in response to oxidative stress |
| Major function | Suppression of oxidative stress-induced intrinsic apoptosis, promoting cell survival |
| Related processes | Senescence-like cell cycle arrest, inflammatory signaling, host-response to infection [1, 3] |
| Disease relevance | Cancer chemoresistance, neurodegeneration, diabetic retinopathy [1, 2, 4] |
| Research methods | CRISPR knockout, point mutation, knock-in, overexpression, proteomics, RNA-seq [1, 4] |
What Is GO:1902176?
GO:1902176 is defined as any process that stops, prevents, or reduces the frequency, rate, or extent of an oxidative stress-induced intrinsic apoptotic signaling pathway. In other words, it encompasses molecular events that inhibit the mitochondria-mediated apoptotic response triggered by ROS, thereby promoting cell survival under oxidative stress conditions.
Why Is negative regulation of oxidative stress-induced intrinsic apoptotic signaling pathway Important in Cell Biology?
GO:1902176 is important because it governs a fundamental cell survival decision under oxidative stress, a condition implicated in cancer, neurodegeneration, diabetes, and aging [1, 2, 4]. The ability to negatively regulate intrinsic apoptosis allows cells to evade death, which can be beneficial in post-mitotic tissues but detrimental in cancer, where it contributes to therapy resistance. Moreover, understanding this process provides insights into senescence-like cell cycle arrest, a key tumor-suppressive mechanism that can be bypassed in cancer. In diabetic retinopathy, pericyte loss is associated with oxidative stress and apoptosis, and negative regulation of this pathway may protect retinal vasculature. In infection, host-response pathways modulate oxidative stress and apoptosis to control pathogens. Exercise-induced rejuvenation of bone marrow mesenchymal stem cells involves inhibition of inflammatory and senescence-related factors, highlighting the physiological relevance of this regulatory process. Thus, GO:1902176 is a critical node for therapeutic intervention in multiple diseases.
• Protects cells from oxidative stress-induced death by inhibiting intrinsic apoptosis.
• Contributes to cancer chemoresistance by allowing tumor cells to evade apoptosis.
• Modulates senescence-like cell cycle arrest, a tumor-suppressive barrier.
• Involved in retinal pericyte survival in diabetic retinopathy.
• Plays a role in host-response to bacterial colonization, as shown in turkey models.
• Linked to exercise-induced rejuvenation of bone marrow mesenchymal stem cells.
• Potential target for neuroprotective therapies in neurodegenerative diseases.
• Key for understanding age-related diseases and tissue homeostasis [1, 4].
• Provides a basis for CRISPR-based functional genomics screens.
• Relevant to inflammatory signaling and senescence-related factors.
What Happens During negative regulation of oxidative stress-induced intrinsic apoptotic signaling pathway?
Sensing oxidative stress and initiating intrinsic apoptosis
In simple terms: When cells experience oxidative stress, damage signals trigger the mitochondria to release death-promoting factors.
Oxidative stress results from excessive ROS that damage cellular components and activate the intrinsic apoptotic pathway. This pathway is characterized by mitochondrial outer membrane permeabilization (MOMP), which releases cytochrome c and other pro-apoptotic factors, leading to caspase activation and cell death. The initiation of intrinsic apoptosis is tightly controlled by BCL2 family proteins, including pro-apoptotic effectors (BAX, BAK) and anti-apoptotic guardians (BCL2, BCL-XL). In cancer, senescence-like cell cycle arrest can be accompanied by modulation of these apoptotic regulators.
Negative regulation by anti-apoptotic BCL2 family proteins
In simple terms: Anti-apoptotic proteins act like brakes on the death machinery, preventing mitochondrial pore formation.
Anti-apoptotic BCL2 family members, such as BCL2 and BCL-XL, inhibit MOMP by sequestering pro-apoptotic effectors. Their overexpression or enhanced activity is a key mechanism for negative regulation of oxidative stress-induced intrinsic apoptosis. In cancer cells, upregulation of these proteins contributes to chemoresistance and evasion of senescence-like cell cycle arrest. Thus, targeting these proteins is a therapeutic strategy to restore apoptosis.
Antioxidant defense systems as negative regulators
In simple terms: Cells use antioxidant enzymes to neutralize ROS, reducing the trigger for apoptosis.
Enzymatic antioxidants such as superoxide dismutase (SOD), catalase, and glutathione peroxidase detoxify ROS, thereby lowering oxidative stress and preventing the initiation of intrinsic apoptosis. The transcription factor NRF2 (NFE2L2) upregulates many antioxidant genes and is a master negative regulator of oxidative stress-induced apoptosis. In diabetic retinopathy, pericyte loss is associated with oxidative stress, and enhancing antioxidant defenses may protect these cells.
Stress-responsive survival signaling pathways
In simple terms: Survival signals from inside the cell can actively block the death pathway.
PI3K/AKT and MAPK/ERK pathways promote cell survival by phosphorylating and inhibiting pro-apoptotic proteins such as BAD and caspase-9. These pathways are often activated in cancer and contribute to negative regulation of oxidative stress-induced intrinsic apoptosis. In infection, host-response pathways may modulate these survival signals to limit pathogen-induced damage. Exercise-induced rejuvenation of mesenchymal stem cells involves inhibition of inflammatory and senescence-related factors, potentially through survival signaling.
Senescence-like cell cycle arrest as a context for regulation
In simple terms: When cells stop dividing due to stress, they can either die or survive; negative regulation tips the balance toward survival.
Senescence-like cell cycle arrest is a response to oxidative stress that can be accompanied by resistance to apoptosis. Negative regulation of intrinsic apoptosis in this context allows senescent cells to persist, which can be beneficial for tumor suppression but detrimental in aging. Exploiting pivotal mechanisms behind senescence-like arrest is a therapeutic strategy in cancer. In bone marrow mesenchymal stem cells, exercise reduces senescence-related factors, potentially enhancing survival.
Key Genes Involved in GO:1902176 negative regulation of oxidative stress-induced intrinsic apoptotic signaling pathway
The following genes and proteins are key players in the negative regulation of oxidative stress-induced intrinsic apoptotic signaling pathway, based on published literature [1, 2, 3, 4].
| Gene | Major Role | Research Relevance |
|---|---|---|
| BCL2 | Anti-apoptotic protein, inhibits MOMP | Overexpression confers chemoresistance; target for inhibitors |
| BCL2L1 (BCL-XL) | Anti-apoptotic protein, sequesters pro-apoptotic effectors | Promotes survival in cancer and neurodegeneration |
| MCL1 | Anti-apoptotic BCL2 family member | Frequently amplified in cancers; regulates apoptosis |
| BAX | Pro-apoptotic effector, forms pores in mitochondria | Its inhibition is a mechanism of negative regulation |
| BAK1 | Pro-apoptotic effector, permeabilizes mitochondria | Target of anti-apoptotic proteins |
| CASP9 | Initiator caspase in intrinsic apoptosis | Inhibition blocks apoptosis |
| CASP3 | Executioner caspase | Final step of apoptosis; inhibited by survival signals |
| NFE2L2 (NRF2) | Transcription factor upregulating antioxidant genes | Master regulator of oxidative stress response |
| SOD1 | Superoxide dismutase, detoxifies ROS | Mutations linked to ALS; protects against apoptosis |
| CAT | Catalase, converts H2O2 to water | Antioxidant defense; negative regulator of apoptosis |
| GPX1 | Glutathione peroxidase, reduces peroxides | Protects cells from oxidative damage |
| AKT1 | Survival kinase, phosphorylates BAD | Promotes cell survival; often activated in cancer |
| MAPK1 (ERK2) | Survival signaling kinase | Inhibits apoptosis via phosphorylation |
| TP53 | Tumor suppressor, induces apoptosis | Its negative regulation promotes survival |
| CDKN1A (p21) | Cell cycle inhibitor, mediates senescence | Linked to senescence-like arrest |
| IL6 | Inflammatory cytokine | Senescence-associated secretory phenotype; modulated by exercise |
| TNF | Inflammatory cytokine | Can induce apoptosis; counteracted by survival signals |
| HIF1A | Hypoxia-inducible factor | Regulates oxidative stress response and survival |
How Is negative regulation of oxidative stress-induced intrinsic apoptotic signaling pathway Regulated?
The negative regulation of oxidative stress-induced intrinsic apoptotic signaling pathway is controlled by multiple layers of regulation. Transcriptional regulation via NRF2 (NFE2L2) induces antioxidant genes that reduce ROS and prevent apoptosis initiation. Post-translational modifications, such as phosphorylation of BCL2 family proteins by AKT, modulate their activity. In cancer, senescence-like cell cycle arrest is associated with changes in apoptotic regulators, and exploiting these mechanisms is a therapeutic strategy. In diabetic retinopathy, pericyte survival is influenced by oxidative stress and apoptotic signaling. Host-response to infection involves inflammatory factors that can modulate apoptosis. Exercise-induced rejuvenation of mesenchymal stem cells is linked to inhibition of inflammatory and senescence-related factors, suggesting systemic regulation.
negative regulation of oxidative stress-induced intrinsic apoptotic signaling pathway and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| BCL2 | Cancer chemoresistance | Knockout or overexpression in cancer cell lines |
| SOD1 | Amyotrophic lateral sclerosis | Point mutation knock-in in neuronal cells |
| NFE2L2 | Oxidative stress-related diseases | CRISPR knockout in epithelial cells |
| IL6 | Senescence and inflammation | Overexpression in mesenchymal stem cells |
| HIF1A | Diabetic retinopathy | Knockdown in retinal pericyte cultures |
Cancer and chemoresistance
Upregulation of negative regulators of oxidative stress-induced intrinsic apoptosis, such as BCL2 and BCL-XL, is a common mechanism of chemoresistance in cancer. Senescence-like cell cycle arrest can be bypassed by these anti-apoptotic mechanisms, allowing tumor cells to survive therapy. Targeting these regulators is a promising strategy to restore apoptosis and overcome resistance.
Neurodegeneration
In neurodegenerative diseases, oxidative stress contributes to neuronal loss through intrinsic apoptosis. Enhancing negative regulation of this pathway may be protective, but excessive inhibition can lead to unwanted cell survival, such as in cancer. Mutations in SOD1 are linked to amyotrophic lateral sclerosis, highlighting the role of oxidative stress in neurodegeneration.
Diabetic retinopathy
Pericyte loss in diabetic retinopathy is associated with oxidative stress and apoptosis. Negative regulation of intrinsic apoptosis may protect retinal pericytes, and proteomic studies of diabetic donor eyes have identified changes in pericyte proteins. Understanding these mechanisms could lead to therapies that preserve retinal vasculature.
Infection and host response
Host-response to bacterial colonization involves modulation of oxidative stress and apoptosis. In turkeys colonized with Campylobacter coli, acute host-response pathways are activated, which may include negative regulation of apoptosis to limit tissue damage. This highlights the role of this process in infectious disease.
From negative regulation of oxidative stress-induced intrinsic apoptotic signaling pathway-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does gene X inhibit oxidative stress-induced apoptosis? | CRISPR knockout cell line |
| Does a specific mutation alter anti-apoptotic function? | Point mutation knock-in cell line |
| Does overexpression of gene Y protect against apoptosis? | Overexpression cell line |
| Does tagging gene Z affect its localization during stress? | Tagged knock-in cell line |
| Which genes are essential for negative regulation? | CRISPR library screening |
| What are the proteomic changes in disease models? | Proteomics of patient-derived cells |
How to Study the negative regulation of oxidative stress-induced intrinsic apoptotic signaling pathway Process
| Method | What It Measures | Typical Application |
|---|---|---|
| CRISPR knockout | Loss of gene function | Identify essential negative regulators |
| Point mutation knock-in | Effect of specific mutation | Model disease variants |
| Overexpression | Gain of function | Test protective role of anti-apoptotic genes |
| Proteomics | Protein abundance and modifications | Discover biomarkers in diabetic retinopathy |
| RNA-seq | Transcriptional changes | Map survival signaling pathways |
| Caspase activity assay | Apoptotic execution | Quantify cell death |
| Mitochondrial membrane potential | MOMP | Assess intrinsic apoptosis |
| CRISPR library screening | Genome-wide fitness | Identify novel regulators |
CRISPR knockout and point mutation models
CRISPR/Cas9 knockout of candidate genes allows researchers to test whether a gene is required for negative regulation of oxidative stress-induced intrinsic apoptosis. Point mutations can be introduced to mimic disease-associated variants and assess their impact on protein function. These models are essential for causal inference in cancer and neurodegeneration research.
Overexpression and knock-in strategies
Overexpression of anti-apoptotic genes such as BCL2 can confer resistance to oxidative stress-induced apoptosis. Knock-in of tagged proteins enables live-cell imaging and biochemical analysis of protein interactions. These approaches help define the molecular mechanisms of negative regulation.
Proteomics and transcriptomics
Proteomic analysis of retinal pericytes from diabetic donors has revealed changes in proteins related to oxidative stress and apoptosis. RNA-seq can identify transcriptional changes in response to oxidative stress and survival signaling. These methods provide a global view of the regulatory network [1, 2].
Functional assays for apoptosis
Apoptosis can be measured by caspase activity assays, Annexin V staining, and mitochondrial membrane potential dyes. These assays are used to quantify the effects of genetic manipulations on oxidative stress-induced cell death. They are critical for validating findings from CRISPR screens.
How CRISPR Can Be Used to Study GO:1902176 negative regulation of oxidative stress-induced intrinsic apoptotic signaling pathway
Knockout
CRISPR knockout of anti-apoptotic genes such as BCL2 or MCL1 sensitizes cells to oxidative stress-induced apoptosis, confirming their role in negative regulation. Knockout of pro-apoptotic genes like BAX confers resistance. These models are used to dissect the genetic basis of chemoresistance.
Point Mutation
Point mutations in genes like SOD1 or TP53 can alter their function in oxidative stress response and apoptosis. CRISPR-mediated point mutation knock-in allows precise modeling of disease-associated variants. Such models are valuable for drug discovery.
Knock-in
Knock-in of fluorescent tags or epitope tags into endogenous loci enables real-time tracking of proteins during oxidative stress. This approach helps visualize the dynamics of anti-apoptotic proteins at mitochondria. It is also used to create reporter cell lines for high-throughput screening.
Overexpression
CRISPR activation (CRISPRa) or cDNA overexpression can upregulate anti-apoptotic genes to study their protective effects. Overexpression of NRF2 or BCL2 reduces oxidative stress-induced apoptosis. These models are useful for identifying therapeutic targets.
How EDITGENE Supports negative regulation of oxidative stress-induced intrinsic apoptotic signaling pathway Research
Researchers studying negative regulation of oxidative stress-induced intrinsic apoptotic signaling pathway-related genes often need to determine whether a candidate gene is causally involved in cell survival or death decisions. EDITGENE provides a comprehensive suite of CRISPR-based services to accelerate this research, from knockout to overexpression and library screening.
Contact EDITGENE today to design your custom CRISPR model for negative regulation of oxidative stress-induced intrinsic apoptotic signaling pathway research.
Frequently Asked Questions About negative regulation of oxidative stress-induced intrinsic apoptotic signaling pathway
What is GO:1902176?
GO:1902176 is a Gene Ontology term for any process that stops, prevents, or reduces the frequency, rate, or extent of an oxidative stress-induced intrinsic apoptotic signaling pathway.
What genes are involved in negative regulation of oxidative stress-induced intrinsic apoptotic signaling pathway?
Key genes include BCL2, BCL2L1, MCL1, NFE2L2, SOD1, AKT1, and MAPK1, among others.
How is oxidative stress-induced intrinsic apoptosis regulated?
It is regulated by anti-apoptotic BCL2 family proteins, antioxidant enzymes, and survival signaling pathways such as PI3K/AKT.
What diseases are associated with this pathway?
Cancer chemoresistance, neurodegeneration, diabetic retinopathy, and infectious diseases are associated with this pathway [1, 2, 3].
What experimental models are used to study GO:1902176?
CRISPR knockout, point mutation, knock-in, overexpression cell lines, and CRISPR library screening are commonly used.
How does NRF2 regulate oxidative stress-induced apoptosis?
NRF2 upregulates antioxidant genes that detoxify ROS, thereby preventing the initiation of intrinsic apoptosis.
What is the role of BCL2 in this process?
BCL2 inhibits mitochondrial outer membrane permeabilization, blocking the release of pro-apoptotic factors and preventing apoptosis.
Can CRISPR be used to study negative regulation of apoptosis?
Yes, CRISPR knockout and activation screens are powerful tools to identify genes that regulate apoptosis.
What is the link between senescence and this pathway?
Senescence-like cell cycle arrest can be accompanied by resistance to apoptosis, and negative regulation of apoptosis allows senescent cells to survive.
How does exercise affect this pathway in stem cells?
Exercise rejuvenates bone marrow mesenchymal stem cells by inhibiting inflammatory and senescence-related factors, which may involve negative regulation of apoptosis.
Conclusion
GO:1902176, negative regulation of oxidative stress-induced intrinsic apoptotic signaling pathway, is a critical biological process that governs cell survival under oxidative stress. Its dysregulation is implicated in cancer, neurodegeneration, and diabetic retinopathy, making it a prime target for therapeutic intervention [1, 2, 4]. Advances in CRISPR-based models and omics technologies are accelerating our understanding of the molecular players and regulatory mechanisms [1, 2]. EDITGENE provides essential tools to study this pathway and translate findings into clinical applications.
References
- 1. Zarneshan SN et al.. 2023. Exploiting pivotal mechanisms behind the senescence-like cell cycle arrest in cancer.. Adv Protein Chem Struct Biol 135:1-19 PMID: 37061329
- 2. Rajendran S et al.. 2025. Proteome of pericytes from retinal vasculature of diabetic donor eyes.. Exp Eye Res 251:110178 PMID: 39580044
- 3. Sylte MJ et al.. 2021. The Acute Host-Response of Turkeys Colonized With Campylobacter coli.. Front Vet Sci 8:613203 PMID: 33889603
- 4. Dong XJ et al.. 2026. Exercise rejuvenates bone marrow mesenchymal stem cells associated with the inhibition of inflammatory factors and senescence-related factors.. Biochem Biophys Rep 46:102561 PMID: 42004533
