GO:1904037 positive regulation of epithelial cell apoptotic process: Apoptosis Signaling Pathway, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:1904037 describes any process that activates or increases the frequency, rate or extent of epithelial cell apoptosis, a programmed cell death mode essential for tissue homeostasis and disease prevention.
• Epithelial cell apoptosis is regulated by a balance of pro-apoptotic and anti-apoptotic signals, including BCL-2 family proteins, caspases, and death receptor pathways.
• Dysregulation of this process contributes to inflammatory bowel disease, diabetic kidney disease, cancer, and ocular disorders such as cataract.
• Key molecular players include MPST, SIRT1, NLRP3, Gasdermin D, Galectin-3, Galectin-7, and ACOT9, which modulate epithelial cell survival or death.
• CRISPR-based knockout, knock-in, and overexpression models are powerful tools to dissect the causal roles of specific genes in epithelial apoptosis.
• Understanding GO:1904037 supports the development of targeted therapies for diseases characterized by excessive or insufficient epithelial cell death.
Description
Epithelial cells form protective barriers and secretory tissues throughout the body, and their controlled death is fundamental to normal development and tissue renewal. The Gene Ontology term GO:1904037, positive regulation of epithelial cell apoptotic process, captures the biological processes that actively promote apoptosis specifically in epithelial cells. This term is distinct from general apoptosis regulation because it focuses on the epithelial cell context, where apoptotic dysregulation underlies numerous pathologies including chronic inflammation, fibrosis, and cancer. Researchers studying epithelial homeostasis, inflammatory diseases, and cancer rely on this ontology term to annotate gene functions and interpret high-throughput data. The process is orchestrated by a complex network of signaling pathways, including mitochondrial, death receptor, and inflammatory signaling cascades. Understanding how these pathways converge to promote epithelial apoptosis is critical for identifying therapeutic targets and biomarkers.
positive regulation of epithelial cell apoptotic process At A Glance
| GO ID | GO:1904037 |
|---|---|
| GO term | positive regulation of epithelial cell apoptotic process |
| Ontology | biological_process |
| Synonym | activation of epithelial cell apoptosis; upregulation of epithelial cell apoptotic process; positive regulation of epitheliocyte apoptosis |
| Major function | Activates or increases the frequency, rate or extent of apoptosis in epithelial cells |
| Related processes | Apoptotic signaling pathway, intrinsic apoptotic signaling, extrinsic apoptotic signaling, inflammatory response |
| Cellular context | Epithelial cells from various tissues including intestine, kidney, lens, and larynx |
| Disease relevance | Inflammatory bowel disease, diabetic kidney disease, cataract, cancer, Helicobacter pylori infection |
What Is GO:1904037?
GO:1904037 is defined as any process that activates or increases the frequency, rate or extent of epithelial cell apoptotic process. In other words, it encompasses molecular events that positively regulate the programmed death of epithelial cells, including signal transduction, gene expression changes, and post-translational modifications that ultimately lead to caspase activation and cell dismantling.
Why Is positive regulation of epithelial cell apoptotic process Important in Cell Biology?
GO:1904037 is important because epithelial cell apoptosis is a double-edged sword: insufficient apoptosis allows damaged or mutated cells to survive and contribute to cancer and autoimmune conditions, while excessive apoptosis drives tissue destruction in inflammatory and degenerative diseases. Understanding the positive regulation of this process provides mechanistic insights into disease pathogenesis and reveals therapeutic targets for modulating cell death.
• Maintains tissue homeostasis by eliminating damaged or infected epithelial cells.
• Prevents tumorigenesis by removing cells with oncogenic mutations.
• Contributes to inflammatory bowel disease pathogenesis when dysregulated.
• Plays a role in diabetic kidney disease through tubular epithelial cell apoptosis.
• Involved in lens epithelial cell death under blue light radiation, relevant to cataract.
• Modulated by bacterial infections such as Helicobacter pylori.
• Serves as a target for pharmacological interventions, e.g., HeidihuangWan in renal injury.
• Provides a framework for annotating gene function in epithelial biology.
• Enables cross-species comparisons of apoptotic mechanisms.
• Supports the development of CRISPR-based disease models.
What Happens During positive regulation of epithelial cell apoptotic process?
Initiation of Apoptotic Signaling
In simple terms: The cell receives a signal to die.
Positive regulation of epithelial cell apoptosis begins with the activation of pro-apoptotic signaling pathways. This can occur through extrinsic death receptor ligation or intrinsic mitochondrial stress. For example, in intestinal epithelial cells, MPST deficiency promotes apoptosis via AKT signaling. In lens epithelial cells, shortwave blue light radiation triggers the SIRT1/NF-κB/NLRP3 pathway, leading to pyroptosis and apoptosis. Galectin-3 facilitates Helicobacter pylori-induced apoptosis in gastric epithelial cells.
Mitochondrial Outer Membrane Permeabilization
In simple terms: The mitochondria release death-promoting factors.
Upon apoptotic stimuli, BCL-2 family proteins such as BAX and BAK permeabilize the mitochondrial outer membrane, releasing cytochrome c and other pro-apoptotic factors. This step is regulated by anti-apoptotic proteins like BCL-2 and BCL-xL. In renal tubular epithelial cells, the PI3K/Akt/mTOR pathway modulates apoptosis, and its inhibition by HeidihuangWan reduces apoptosis. ACOT9 promotes ROS-associated epithelial remodeling in laryngeal squamous cell carcinoma, likely involving mitochondrial dysfunction.
Caspase Activation and Apoptosome Formation
In simple terms: Executioner enzymes are switched on.
Cytochrome c release leads to apoptosome formation and activation of initiator caspase-9, which then cleaves effector caspases-3 and -7. These caspases dismantle the cell by cleaving structural and regulatory proteins. In diabetic kidney disease, Gasdermin D is involved in switching from apoptosis to pyroptosis in renal tubular epithelial cells, highlighting crosstalk between caspase-dependent and inflammatory death pathways.
Regulation by Inflammatory and Metabolic Signals
In simple terms: Inflammation and metabolism can tip the balance toward cell death.
Inflammatory signals such as NF-κB and NLRP3 inflammasome activation can promote epithelial apoptosis. SIRT1/NF-κB/NLRP3 pathway activation in lens epithelial cells under blue light radiation induces pyroptosis and apoptosis. Metabolic genes like ACOT9 influence ROS levels and epithelial remodeling. Lactobacillus gasseri SF1183 modulates intestinal epithelial cell proliferation and apoptosis, demonstrating microbial influence.
Phagocytic Clearance and Tissue Remodeling
In simple terms: Dead cells are removed and tissue is repaired.
After apoptosis, epithelial cells are recognized and engulfed by phagocytes through phosphatidylserine exposure. This clearance prevents secondary necrosis and inflammation. Galectin-7, a pro-apoptotic protein, is involved in epithelial cell death and may influence clearance. Dysregulation of this step can lead to chronic inflammation, as seen in inflammatory bowel disease.
Key Genes Involved in GO:1904037 positive regulation of epithelial cell apoptotic process
The following genes and proteins have been experimentally implicated in the positive regulation of epithelial cell apoptotic process, based on the verified literature.
| Gene | Major Role | Research Relevance |
|---|---|---|
| MPST | Deficiency promotes intestinal epithelial cell apoptosis via AKT | Inflammatory bowel disease model |
| SIRT1 | Regulates NF-κB/NLRP3 pathway in lens epithelial cells | Blue light-induced cataract |
| NLRP3 | Inflammasome component mediating pyroptosis/apoptosis | Lens epithelial cell death |
| ACOT9 | Mitochondrial metabolism gene promoting ROS-associated epithelial remodeling | Laryngeal squamous cell carcinoma |
| GSDMD | Switches apoptosis to pyroptosis in renal tubular epithelial cells | Diabetic kidney disease |
| LGALS3 (Galectin-3) | Facilitates Helicobacter pylori-induced apoptosis | Gastric epithelial infection |
| LGALS7 (Galectin-7) | Pro-apoptotic galectin in epithelial cells | Epithelial homeostasis |
| AKT | Survival kinase; its inhibition promotes apoptosis | Intestinal epithelial apoptosis |
| PI3K | Upstream kinase in survival signaling | Renal tubular epithelial apoptosis |
| mTOR | Survival signaling; inhibition reduces apoptosis | Renal tubular epithelial apoptosis |
| NF-κB | Transcription factor modulating inflammatory apoptosis | Lens epithelial cells |
| Caspase-3 | Executioner caspase in apoptosis | General apoptosis marker |
| Caspase-9 | Initiator caspase in intrinsic apoptosis | Mitochondrial pathway |
| BAX | Pro-apoptotic BCL-2 family member | Mitochondrial outer membrane permeabilization |
| BCL-2 | Anti-apoptotic BCL-2 family member | Survival regulation |
| ROS | Reactive oxygen species promoting oxidative stress-induced apoptosis | Epithelial remodeling |
| Lactobacillus gasseri | Modulates intestinal epithelial cell proliferation and apoptosis | Probiotic effects |
How Is positive regulation of epithelial cell apoptotic process Regulated?
The positive regulation of epithelial cell apoptotic process is tightly controlled by multiple signaling pathways. The PI3K/Akt/mTOR pathway is a major survival axis; its inhibition promotes apoptosis in renal tubular epithelial cells. The SIRT1/NF-κB/NLRP3 pathway mediates inflammatory apoptosis in lens epithelial cells. MPST deficiency activates AKT to promote intestinal epithelial apoptosis. Gasdermin D cleavage switches apoptosis to pyroptosis in diabetic kidney disease. Additionally, microbial factors such as Lactobacillus gasseri can modulate epithelial apoptosis.
positive regulation of epithelial cell apoptotic process and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| MPST | Inflammatory bowel disease | Mpst knockout intestinal epithelial cells |
| GSDMD | Diabetic kidney disease | Gsdmd knockout renal tubular epithelial cells |
| SIRT1 | Cataract (blue light-induced) | Sirt1 knockout lens epithelial cells |
| ACOT9 | Laryngeal squamous cell carcinoma | ACOT9 overexpression in laryngeal epithelial cells |
| LGALS3 | Helicobacter pylori infection | LGALS3 knockout gastric epithelial cells |
Inflammatory Bowel Disease
MPST deficiency promotes intestinal epithelial cell apoptosis and aggravates inflammatory bowel disease via AKT signaling. This highlights how metabolic dysregulation can tip the balance toward excessive epithelial death, compromising the intestinal barrier.
Diabetic Kidney Disease
Gasdermin D is involved in switching from apoptosis to pyroptosis in TLR4-mediated renal tubular epithelial cells injury in diabetic kidney disease. This switch amplifies inflammation and contributes to kidney damage.
Cataract and Ocular Disorders
The SIRT1/NF-κB/NLRP3 pathway mediates pyroptosis of lens epithelial cells under shortwave blue light radiation, linking environmental light exposure to cataract formation.
Cancer
ACOT9 promotes ROS-associated epithelial remodeling in laryngeal squamous cell carcinoma, suggesting that metabolic reprogramming can influence epithelial apoptosis and tumor progression. Galectin-3 facilitates Helicobacter pylori-induced apoptosis, which may contribute to gastric carcinogenesis.
From positive regulation of epithelial cell apoptotic process-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does MPST deficiency promote intestinal epithelial apoptosis? | MPST knockout in intestinal epithelial cell lines |
| Does SIRT1 regulate lens epithelial apoptosis under blue light? | SIRT1 knockout or overexpression in lens epithelial cells |
| Does ACOT9 promote ROS-associated epithelial remodeling? | ACOT9 overexpression in laryngeal squamous cell carcinoma cells |
| Does Gasdermin D switch apoptosis to pyroptosis? | GSDMD knockout in renal tubular epithelial cells |
| Does Lactobacillus gasseri modulate epithelial apoptosis? | Co-culture with intestinal epithelial cells |
| Does Galectin-3 facilitate H. pylori-induced apoptosis? | LGALS3 knockout gastric epithelial cells |
How to Study the positive regulation of epithelial cell apoptotic process Process
| Method | What It Measures | Typical Application |
|---|---|---|
| Annexin V/PI flow cytometry | Phosphatidylserine exposure and membrane integrity | Quantifying apoptosis in epithelial cells |
| TUNEL assay | DNA fragmentation | Detecting apoptotic cells in tissues |
| Caspase-3/7 activity assay | Caspase enzymatic activity | Measuring apoptosis execution |
| Western blot | Protein expression and cleavage | Analyzing BCL-2 family and caspase activation |
| Immunohistochemistry | Protein localization in tissue | Assessing apoptosis markers in patient samples |
| RNA-seq | Global gene expression changes | Identifying pathways in epithelial apoptosis |
| CRISPR knockout | Gene function loss | Establishing causal roles of genes |
| Co-culture assays | Host-microbe interactions | Testing probiotic modulation of apoptosis |
Apoptosis Assays
Flow cytometry with Annexin V/PI staining, TUNEL assays, and caspase activity assays are standard for quantifying epithelial cell apoptosis. These methods were used to demonstrate MPST deficiency-induced apoptosis and Gasdermin D-mediated pyroptosis.
Western Blotting and Immunohistochemistry
Detection of cleaved caspase-3, PARP, and BCL-2 family proteins by Western blot or IHC is common. For example, SIRT1/NF-κB/NLRP3 pathway components were analyzed by Western blot in lens epithelial cells.
RNA Interference and CRISPR Knockout
Gene silencing via siRNA or CRISPR knockout is used to establish causality. MPST knockout promoted apoptosis in intestinal epithelial cells, and GSDMD knockout altered cell death modality.
Transcriptomics and Proteomics
RNA-seq and proteomics can identify global changes in gene expression during epithelial apoptosis. ACOT9-related ROS remodeling was studied in laryngeal cancer cells.
How CRISPR Can Be Used to Study GO:1904037 positive regulation of epithelial cell apoptotic process
Knockout
CRISPR knockout of genes such as MPST, GSDMD, or SIRT1 in epithelial cell lines can determine whether they are required for apoptosis. For example, MPST knockout promoted intestinal epithelial apoptosis, and GSDMD knockout switched cell death from pyroptosis to apoptosis.
Point Mutation
Introducing point mutations in genes like NLRP3 or SIRT1 can dissect specific phosphorylation or catalytic sites involved in apoptotic regulation. This approach helps identify critical residues for signaling.
Knock-in
Knock-in of tagged versions of apoptotic regulators (e.g., GFP-tagged BAX) allows live-cell imaging of mitochondrial translocation. This can reveal dynamics of epithelial apoptosis.
Overexpression
Overexpression of pro-apoptotic genes such as ACOT9 or Galectin-7 in epithelial cells can induce apoptosis and model disease states. ACOT9 overexpression promoted ROS-associated remodeling in laryngeal cancer cells.
How EDITGENE Supports positive regulation of epithelial cell apoptotic process Research
Researchers studying positive regulation of epithelial cell apoptotic process-related genes often need to determine whether a candidate gene is causally involved in promoting or inhibiting apoptosis. EDITGENE provides a comprehensive suite of CRISPR services to enable such functional studies.
Contact EDITGENE today to design your custom CRISPR model for positive regulation of epithelial cell apoptotic process research.
Frequently Asked Questions About positive regulation of epithelial cell apoptotic process
What is GO:1904037?
GO:1904037 is the Gene Ontology term for positive regulation of epithelial cell apoptotic process, defined as any process that activates or increases the frequency, rate or extent of apoptosis in epithelial cells.
What genes are involved in positive regulation of epithelial cell apoptotic process?
Key genes include MPST, SIRT1, NLRP3, ACOT9, GSDMD, LGALS3, LGALS7, AKT, PI3K, mTOR, and NF-κB, among others.
How is epithelial cell apoptosis regulated?
It is regulated by a balance of pro-apoptotic and anti-apoptotic signals, including the PI3K/Akt/mTOR pathway, SIRT1/NF-κB/NLRP3 axis, and inflammatory caspases.
What diseases are associated with dysregulated epithelial cell apoptosis?
Inflammatory bowel disease, diabetic kidney disease, cataract, and cancers such as laryngeal squamous cell carcinoma and gastric cancer.
What is the role of MPST in epithelial apoptosis?
MPST deficiency promotes intestinal epithelial cell apoptosis and aggravates inflammatory bowel disease via AKT signaling.
How does Gasdermin D influence epithelial cell death?
Gasdermin D mediates a switch from apoptosis to pyroptosis in renal tubular epithelial cells under diabetic conditions.
Can probiotics modulate epithelial cell apoptosis?
Yes, Lactobacillus gasseri SF1183 has been shown to modulate intestinal epithelial cell proliferation and apoptosis.
What experimental models are used to study GO:1904037?
Common models include CRISPR knockout, overexpression, and point mutation cell lines, as well as co-culture systems and animal models.
What is the difference between apoptosis and pyroptosis in epithelial cells?
Apoptosis is a non-inflammatory programmed cell death, while pyroptosis is inflammatory and often mediated by Gasdermin D; switching between them can occur in diseases like diabetic kidney disease.
How can CRISPR help study positive regulation of epithelial cell apoptotic process?
CRISPR knockout, knock-in, and overexpression enable precise manipulation of candidate genes to establish causality and dissect molecular mechanisms.
Conclusion
GO:1904037, positive regulation of epithelial cell apoptotic process, is a critical biological process that governs epithelial tissue homeostasis and disease. The integration of CRISPR-based models with molecular and omics approaches continues to unravel the complex signaling networks involved. Understanding these mechanisms offers promising avenues for therapeutic intervention in inflammatory, metabolic, and neoplastic diseases.
References
- 1. Saussez S et al.. 2006. Galectin-7.. Cell Mol Life Sci 63(6):686-97 PMID: 16429325
- 2. Zhang J et al.. 2022. MPST deficiency promotes intestinal epithelial cell apoptosis and aggravates inflammatory bowel disease via AKT.. Redox Biol 56:102469 PMID: 36126419
- 3. Ji Z et al.. 2024. The role of the SIRT1/NF-κB/NLRP3 pathway in the pyroptosis of lens epithelial cells under shortwave blue light radiation.. Exp Eye Res 246:110019 PMID: 39117137
- 4. Wang W et al.. 2026. ACOT9, a mitochondrial metabolism-related gene, promotes ROS-associated epithelial remodeling in laryngeal squamous cell carcinoma.. J Transl Med 24(1) PMID: 42343374
- 5. Yuan S et al.. 2022. Gasdermin D is involved in switching from apoptosis to pyroptosis in TLR4-mediated renal tubular epithelial cells injury in diabetic kidney disease.. Arch Biochem Biophys 727:109347 PMID: 35809639
- 6. Di Luccia B et al.. 2022. Modulation of intestinal epithelial cell proliferation and apoptosis by Lactobacillus gasseri SF1183.. Sci Rep 12(1):20248 PMID: 36424419
- 7. Hung YH et al.. 2025. Galectin-3 facilitates helicobacter pylori-induced apoptosis independently of sensing lysosomal damage.. Glycobiology 36(1) PMID: 41283852
- 8. Li YY et al.. 2023. Anti-apoptotic effect of HeidihuangWan in renal tubular epithelial cells via PI3K/Akt/mTOR signaling pathway.. J Ethnopharmacol 302(Pt A):115882 PMID: 36341817
