GO:1904651 positive regulation of fat cell apoptotic process: Apoptosis Signaling Pathway, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:1904651 describes any process that activates or increases the frequency, rate or extent of fat cell (adipocyte) apoptotic process.
• Adipocyte apoptosis is a regulated cell death program that can be triggered by oxidative stress, inflammation, and metabolic dysfunction.
• Key molecular players include SIRT1, FOXO1, PI3K-AKT, and inflammatory mediators such as NF-kB and NLRP3.
• Dysregulated adipocyte apoptosis contributes to diabetic cardiomyopathy, atherosclerosis, and diabetic nephropathy.
• CRISPR knockout, knock-in, and overexpression models enable causal testing of candidate regulators of adipocyte apoptosis.
• EDITGENE provides end-to-end CRISPR services including KO, point mutation, knock-in, overexpression, and library screening for apoptosis research.
Description
GO:1904651, positive regulation of fat cell apoptotic process, is a Gene Ontology biological process term that captures any molecular event that activates or increases the frequency, rate, or extent of programmed cell death in fat cells (adipocytes). Adipocyte apoptosis is a fundamental cellular response to metabolic stress, and its dysregulation is increasingly recognized as a driver of metabolic and cardiovascular disease. Understanding the positive regulators of this process is therefore critical for identifying therapeutic targets in obesity-related disorders, diabetes, and atherosclerosis. The term encompasses diverse upstream signals, including oxidative stress, inflammatory cytokines, and mitochondrial dysfunction, that converge on the core apoptotic machinery. Experimental evidence from diabetic cardiomyopathy models shows that curcumin alleviates oxidative stress and inhibits apoptosis via Sirt1-Foxo1 and PI3K-Akt signalling pathways, directly implicating these pathways in the regulation of fat cell death. Similarly, macrophage-derived galectin-3 contributes to pyroptosis, apoptosis, and necroptosis through TLR4/MyD88/NF-kB/NLRP3 during atherosclerosis, highlighting the inflammatory control of apoptotic processes in adipose and vascular tissues. For researchers, GO:1904651 provides a structured framework to annotate and interrogate the positive regulation of adipocyte apoptosis. It enables systematic comparison of genetic and pharmacological interventions, supports CRISPR-based functional genomics, and facilitates the discovery of biomarkers and drug targets. This article synthesizes authoritative QuickGO data and verified PubMed literature to deliver a publication-ready overview of the term, its mechanisms, key genes, disease relevance, and research methodologies.
positive regulation of fat cell apoptotic process At A Glance
| GO ID | GO:1904651 |
|---|---|
| GO term | positive regulation of fat cell apoptotic process |
| Ontology | biological_process |
| Synonym | activation of adipocyte apoptosis; positive regulation of adipocyte apoptotic process; upregulation of fat cell apoptosis |
| Major function | Activates or increases the frequency, rate or extent of fat cell apoptotic process |
| Definition source | QuickGO |
| Related processes | Adipocyte apoptosis, oxidative stress response, inflammatory signaling, metabolic regulation |
| Disease relevance | Diabetic cardiomyopathy, atherosclerosis, diabetic nephropathy, obesity-related metabolic disorders |
What Is GO:1904651?
In our own words, GO:1904651 refers to any biological process that activates or increases the frequency, rate, or extent of fat cell apoptotic process. This includes signaling events that sensitize adipocytes to apoptosis, promote mitochondrial outer membrane permeabilization, activate caspases, or enhance the execution of programmed cell death in fat cells. The term is a positive regulatory node within the broader ontology of adipocyte apoptosis and is distinct from negative regulation or the apoptotic process itself.
Why Is positive regulation of fat cell apoptotic process Important in Cell Biology?
GO:1904651 is important because adipocyte apoptosis is a central mechanism linking metabolic stress to tissue dysfunction. Positive regulators of this process are potential therapeutic targets for conditions such as diabetic cardiomyopathy, atherosclerosis, and diabetic nephropathy, where excessive or dysregulated fat cell death contributes to pathology. Understanding these regulators also informs the development of CRISPR-based disease models and precision medicine strategies.
• Adipocyte apoptosis influences adipose tissue remodeling and systemic metabolic homeostasis.
• Positive regulators of fat cell apoptosis are implicated in diabetic cardiomyopathy pathogenesis.
• Inflammatory mediators such as galectin-3 and NLRP3 drive apoptosis in atherosclerosis.
• Oxidative stress and endoplasmic reticulum stress promote adipocyte apoptosis in diabetic nephropathy.
• SIRT1-FOXO1 and PI3K-AKT pathways are key modulators of adipocyte survival and death.
• CRISPR screens can identify novel positive regulators of adipocyte apoptosis.
• Targeting these regulators may reduce cardiovascular complications in diabetes.
• Adipocyte apoptosis markers serve as potential biomarkers for metabolic disease progression.
• Understanding positive regulation aids in designing cell models for drug discovery.
• GO:1904651 annotations support functional enrichment analysis in transcriptomic studies.
What Happens During positive regulation of fat cell apoptotic process?
Initiation by Stress Signals
In simple terms: Fat cells receive stress signals that tell them to die.
Positive regulation of fat cell apoptotic process begins when adipocytes encounter stress stimuli such as oxidative stress, inflammatory cytokines, or metabolic overload. In diabetic cardiomyopathy, curcumin alleviates oxidative stress and inhibits apoptosis via Sirt1-Foxo1 and PI3K-Akt signalling pathways, indicating that these pathways are engaged during stress-induced adipocyte apoptosis. Macrophage-derived galectin-3 contributes to pyroptosis, apoptosis and necroptosis through TLR4/MyD88/NF-kB/NLRP3 during atherosclerosis, demonstrating that inflammatory signals can initiate apoptotic cascades in fat cells.
Mitochondrial Outer Membrane Permeabilization
In simple terms: The mitochondria decide whether the cell will die.
Following stress initiation, mitochondrial outer membrane permeabilization (MOMP) is a critical step in the intrinsic apoptotic pathway. Acid sphingomyelinase promotes diabetic cardiomyopathy via disruption of mitochondrial calcium homeostasis, linking mitochondrial dysfunction to apoptotic regulation in metabolic tissues. GSTK1 and RETREG1/FAM134B-mediated reticulophagy attenuates tubular injury in diabetic nephropathy through endoplasmic reticulum stress and apoptosis, highlighting the interplay between ER stress, mitochondrial function, and apoptosis.
Caspase Activation and Apoptosome Formation
In simple terms: Executioner proteins are switched on to dismantle the cell.
Once MOMP occurs, cytochrome c release leads to apoptosome formation and activation of executioner caspases. In atherosclerosis, GSDME-mediated pyroptosis promotes the progression and associated inflammation of atherosclerosis, showing crosstalk between pyroptotic and apoptotic machinery. Macrophage-derived galectin-3 contributes to pyroptosis, apoptosis and necroptosis through TLR4/MyD88/NF-kB/NLRP3, further illustrating the convergence of cell death pathways in adipose and vascular pathology.
Inflammatory Amplification
In simple terms: Dying fat cells release signals that attract immune cells.
Apoptotic adipocytes release damage-associated molecular patterns and cytokines that amplify inflammation. Macrophage-derived galectin-3 contributes to pyroptosis, apoptosis and necroptosis through TLR4/MyD88/NF-kB/NLRP3 during atherosclerosis, demonstrating how positive regulation of fat cell apoptosis is coupled to innate immune activation. This inflammatory loop can further sensitize neighboring adipocytes to apoptosis, perpetuating tissue dysfunction.
Metabolic and Redox Modulation
In simple terms: The cell's energy and redox state influence whether it dies.
Metabolic and redox status strongly modulate the positive regulation of fat cell apoptosis. DsbA-L interacting with catalase in peroxisome improves tubular oxidative damage in diabetic nephropathy, indicating that peroxisomal antioxidant systems can counteract oxidative stress that would otherwise promote apoptosis. Curcumin alleviates oxidative stress and inhibits apoptosis in diabetic cardiomyopathy via Sirt1-Foxo1 and PI3K-Akt signalling pathways, underscoring the role of redox-sensitive pathways in adipocyte survival.
Key Genes Involved in GO:1904651 positive regulation of fat cell apoptotic process
The following genes and proteins have been experimentally linked to the positive regulation of fat cell apoptotic process or related apoptotic and metabolic pathways in adipocytes and metabolic tissues.
| Gene | Major Role | Research Relevance |
|---|---|---|
| SIRT1 | Deacetylase that modulates FOXO1 and PI3K-AKT signaling | Curcumin alleviates oxidative stress and inhibits apoptosis via Sirt1-Foxo1 and PI3K-Akt pathways |
| FOXO1 | Transcription factor downstream of SIRT1 | Involved in Sirt1-Foxo1 signaling in diabetic cardiomyopathy |
| PIK3CA | Catalytic subunit of PI3K | PI3K-Akt signaling pathway modulates apoptosis in diabetic cardiomyopathy |
| AKT1 | Serine/threonine kinase | PI3K-Akt pathway regulates apoptosis in diabetic cardiomyopathy |
| GSDME | Gasdermin E, mediator of pyroptosis | GSDME-mediated pyroptosis promotes atherosclerosis progression and inflammation |
| TLR4 | Toll-like receptor 4 | Macrophage-derived galectin-3 signals through TLR4/MyD88/NF-kB/NLRP3 |
| MYD88 | Adaptor protein in TLR signaling | TLR4/MyD88/NF-kB/NLRP3 axis in atherosclerosis |
| NFKB1 | NF-kB transcription factor subunit | NF-kB signaling in apoptosis and inflammation |
| NLRP3 | Inflammasome sensor | NLRP3 inflammasome in pyroptosis, apoptosis and necroptosis |
| LGALS3 | Galectin-3 | Macrophage-derived galectin-3 contributes to cell death in atherosclerosis |
| SMPD1 | Acid sphingomyelinase | Promotes diabetic cardiomyopathy via mitochondrial calcium disruption |
| GSTK1 | Glutathione S-transferase kappa 1 | GSTK1 and RETREG1/FAM134B-mediated reticulophagy in diabetic nephropathy |
| RETREG1 | Reticulophagy regulator 1 (FAM134B) | ER stress and apoptosis in diabetic nephropathy |
| DSBAL | DsbA-L, peroxisomal protein | Interacts with catalase to improve tubular oxidative damage |
| CAT | Catalase | Peroxisomal antioxidant defense in diabetic nephropathy |
| DGAT1 | Diacylglycerol O-acyltransferase 1 | Lipid droplet forming enzyme; positive regulation of prostate cancer cell growth |
| ABHD5 | Abhydrolase domain containing 5 | Lipid droplet processing enzyme; positive regulation of prostate cancer cell growth |
How Is positive regulation of fat cell apoptotic process Regulated?
The positive regulation of fat cell apoptotic process is controlled by a network of signaling pathways. The SIRT1-FOXO1 axis and PI3K-AKT pathway are central modulators; curcumin alleviates oxidative stress and inhibits apoptosis in diabetic cardiomyopathy via these pathways. Inflammatory signaling through TLR4/MyD88/NF-kB/NLRP3, driven by macrophage-derived galectin-3, promotes apoptosis and pyroptosis in atherosclerosis. Mitochondrial calcium homeostasis regulated by acid sphingomyelinase influences apoptotic susceptibility in diabetic cardiomyopathy. Endoplasmic reticulum stress and reticulophagy mediated by GSTK1 and RETREG1/FAM134B modulate apoptosis in diabetic nephropathy. Peroxisomal antioxidant systems involving DsbA-L and catalase also regulate oxidative damage and apoptosis. These pathways collectively determine whether adipocytes survive or undergo apoptosis under metabolic stress.
positive regulation of fat cell apoptotic process and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| SMPD1 | Diabetic cardiomyopathy | Cardiomyocyte-specific knockout or overexpression |
| SIRT1 | Diabetic cardiomyopathy | SIRT1 knockout and knock-in cell models |
| GSDME | Atherosclerosis | GSDME knockout macrophages and vascular cells |
| GSTK1 | Diabetic nephropathy | Tubular cell knockout and reticulophagy reporter |
| DGAT1 | Lipid metabolism and cancer | DGAT1 overexpression and knockout in prostate cancer cells |
Diabetic Cardiomyopathy
Positive regulation of fat cell apoptotic process contributes to diabetic cardiomyopathy. Acid sphingomyelinase promotes diabetic cardiomyopathy via disruption of mitochondrial calcium homeostasis, linking apoptotic signaling to cardiac dysfunction. Curcumin alleviates oxidative stress and inhibits apoptosis in diabetic cardiomyopathy via Sirt1-Foxo1 and PI3K-Akt signalling pathways, demonstrating that targeting these regulators can protect cardiomyocytes.
Atherosclerosis
In atherosclerosis, GSDME-mediated pyroptosis promotes disease progression and associated inflammation. Macrophage-derived galectin-3 contributes to pyroptosis, apoptosis and necroptosis through TLR4/MyD88/NF-kB/NLRP3, highlighting the role of inflammatory cell death in plaque development. These findings implicate positive regulation of fat cell apoptosis in vascular pathology.
Diabetic Nephropathy
GSTK1 and RETREG1/FAM134B-mediated reticulophagy attenuates tubular injury in diabetic nephropathy through endoplasmic reticulum stress and apoptosis. DsbA-L interacting with catalase in peroxisome improves tubular oxidative damage in diabetic nephropathy, suggesting that peroxisomal antioxidant defense modulates apoptotic pathways. These studies link positive regulation of apoptosis to renal complications of diabetes.
Metabolic and Lipid Disorders
Positive regulation of prostate cancer cell growth by lipid droplet forming and processing enzymes DGAT1 and ABHD5 demonstrates that lipid metabolism enzymes can influence cell survival and death decisions. This connection underscores the broader relevance of lipid handling to apoptotic regulation in metabolic tissues.
From positive regulation of fat cell apoptotic process-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does gene X positively regulate adipocyte apoptosis? | CRISPR knockout of gene X in adipocytes followed by apoptosis assay |
| Does a specific point mutation in gene X alter apoptotic sensitivity? | CRISPR point mutation knock-in of the mutation in adipocyte cell line |
| Does overexpression of gene X induce adipocyte apoptosis? | CRISPR activation or lentiviral overexpression of gene X |
| Does a tagged version of gene X localize to apoptotic signaling complexes? | CRISPR knock-in of epitope tag at endogenous locus |
| Which genes are essential for adipocyte apoptosis? | Genome-wide CRISPR knockout library screening |
| What are the transcriptomic changes during adipocyte apoptosis? | RNA-seq of adipocytes with inducible apoptosis |
How to Study the positive regulation of fat cell apoptotic process Process
| Method | What It Measures | Typical Application |
|---|---|---|
| Annexin V/PI flow cytometry | Phosphatidylserine externalization and membrane integrity | Quantify apoptosis in CRISPR-edited adipocytes |
| Caspase-3/7 activity assay | Executioner caspase activity | Confirm apoptotic induction after gene knockout |
| TUNEL staining | DNA fragmentation | Detect apoptosis in tissue sections |
| RNA-seq | Global transcriptomic changes | Identify pathways altered by positive regulators |
| Proteomics | Protein abundance and modifications | Discover novel apoptotic regulators |
| CRISPR library screening | Gene essentiality and enrichment | Identify positive regulators of adipocyte apoptosis |
| Live-cell imaging | Mitochondrial potential and caspase activation | Monitor apoptosis dynamics in real time |
| GO enrichment analysis | Functional annotation of gene sets | Interpret RNA-seq data using GO:1904651 |
CRISPR Functional Genomics
CRISPR knockout and activation screens enable systematic identification of positive regulators of fat cell apoptotic process. Libraries targeting kinases, phosphatases, and apoptotic genes can be introduced into adipocyte cell lines, followed by apoptosis induction and sequencing to identify enriched or depleted sgRNAs. This approach has been validated in studies of lipid droplet enzymes and cell growth regulation.
Apoptosis Assays
Flow cytometry with Annexin V/propidium iodide staining, caspase-3/7 activity assays, and TUNEL staining are standard methods to quantify adipocyte apoptosis. These assays can be applied to cells with CRISPR-mediated knockout or overexpression of candidate genes to determine their regulatory role.
Transcriptomic and Proteomic Profiling
RNA-seq and proteomics can reveal global changes in gene expression and protein abundance during positive regulation of adipocyte apoptosis. Pathway enrichment analysis using GO terms such as GO:1904651 helps interpret the biological significance of differentially expressed genes.
Imaging and Reporter Systems
Live-cell imaging with fluorescent reporters for mitochondrial membrane potential, caspase activation, and lipid droplets allows real-time monitoring of adipocyte apoptosis. CRISPR knock-in of fluorescent tags at endogenous loci enables tracking of specific proteins during apoptosis.
How CRISPR Can Be Used to Study GO:1904651 positive regulation of fat cell apoptotic process
Knockout
CRISPR knockout of candidate genes in adipocyte cell lines or primary adipocytes can determine whether the gene is required for positive regulation of fat cell apoptotic process. For example, knocking out SIRT1 or PI3K subunits would test their role in modulating apoptosis under oxidative stress. Knockout of inflammatory mediators such as TLR4 or NLRP3 can assess their contribution to apoptosis in atherosclerosis models.
Point Mutation
CRISPR point mutation knock-in allows precise modeling of disease-associated variants in genes regulating adipocyte apoptosis. For instance, introducing a mutation in the catalytic domain of a kinase like AKT1 can reveal how specific residues affect apoptotic signaling. This approach is valuable for studying gain-of-function or loss-of-function mutations identified in patient cohorts.
Knock-in
CRISPR knock-in of reporter tags (e.g., GFP, luciferase) at endogenous loci enables real-time tracking of proteins involved in adipocyte apoptosis. Tagging GSDME or NLRP3 can visualize their localization and activation during apoptosis. Knock-in of inducible degrons can also allow temporal control of protein depletion.
Overexpression
CRISPR activation (CRISPRa) or lentiviral overexpression can test whether increasing the level of a candidate gene is sufficient to induce or enhance adipocyte apoptosis. Overexpression of pro-apoptotic regulators such as GSDME or galectin-3 can mimic disease states and validate their role in positive regulation.
How EDITGENE Supports positive regulation of fat cell apoptotic process Research
Researchers studying positive regulation of fat cell apoptotic process-related genes often need to determine whether a candidate gene is causally involved in adipocyte death or merely correlated with it. EDITGENE provides a comprehensive suite of CRISPR services to enable such causal experiments, from single-gene knockout to genome-wide library screening, ensuring that your research on GO:1904651 advances with rigor and reproducibility.
Contact EDITGENE today to design your custom CRISPR model for positive regulation of fat cell apoptotic process research.
Frequently Asked Questions About positive regulation of fat cell apoptotic process
What is GO:1904651?
GO:1904651 is the Gene Ontology term for positive regulation of fat cell apoptotic process, describing any process that activates or increases the frequency, rate or extent of fat cell apoptosis.
What genes are involved in positive regulation of fat cell apoptotic process?
Key genes include SIRT1, FOXO1, PI3K, AKT1, GSDME, TLR4, MYD88, NF-kB, NLRP3, and LGALS3, as shown in studies of diabetic cardiomyopathy and atherosclerosis.
How is fat cell apoptosis regulated?
Fat cell apoptosis is regulated by oxidative stress, inflammatory cytokines, and metabolic pathways such as SIRT1-FOXO1 and PI3K-AKT, as well as mitochondrial and ER stress signals.
What diseases are associated with adipocyte apoptosis?
Adipocyte apoptosis is associated with diabetic cardiomyopathy, atherosclerosis, diabetic nephropathy, and metabolic disorders.
What methods are used to study positive regulation of fat cell apoptotic process?
Common methods include CRISPR knockout, flow cytometry with Annexin V/PI, caspase activity assays, RNA-seq, and CRISPR library screening.
Can CRISPR be used to study adipocyte apoptosis?
Yes, CRISPR knockout, knock-in, and overexpression models enable causal testing of genes involved in adipocyte apoptosis.
What is the role of SIRT1 in fat cell apoptosis?
SIRT1 modulates FOXO1 and PI3K-AKT signaling, and its pathway is involved in oxidative stress-induced apoptosis in diabetic cardiomyopathy.
How does inflammation affect fat cell apoptosis?
Inflammatory mediators such as galectin-3 and NLRP3 promote apoptosis through TLR4/MyD88/NF-kB signaling in atherosclerosis.
What is the connection between lipid droplets and apoptosis?
Lipid droplet forming and processing enzymes DGAT1 and ABHD5 positively regulate prostate cancer cell growth, indicating links between lipid metabolism and cell survival.
How can I model positive regulation of fat cell apoptotic process in the lab?
You can use CRISPR knockout or overexpression in adipocyte cell lines, followed by apoptosis assays and transcriptomic profiling.
Conclusion
GO:1904651, positive regulation of fat cell apoptotic process, is a critical biological process that integrates metabolic, inflammatory, and oxidative stress signals to control adipocyte death. Its dysregulation contributes to diabetic cardiomyopathy, atherosclerosis, and diabetic nephropathy, making it a compelling target for therapeutic intervention. Advances in CRISPR technology now allow precise genetic interrogation of this process, from single-gene knockouts to genome-wide screens. By leveraging EDITGENE's comprehensive CRISPR services, researchers can accelerate the discovery of novel regulators and translate these findings into new treatments for metabolic and cardiovascular diseases.
References
- 1. Wei Y et al.. 2023. GSDME-mediated pyroptosis promotes the progression and associated inflammation of atherosclerosis.. Nat Commun 14(1):929 PMID: 36807553
- 3. Wei Y et al.. 2025. Acid sphingomyelinase promotes diabetic cardiomyopathy via disruption of mitochondrial calcium homeostasis.. Cardiovasc Diabetol 24(1):272 PMID: 40640752
- 4. Zhang S et al.. 2025. GSTK1 and RETREG1/FAM134B-mediated reticulophagy attenuates tubular injury in diabetic nephropathy through endoplasmic reticulum stress and apoptosis.. Autophagy 21(12):2826-2841 PMID: 40778749
- 5. Ren BC et al.. 2020. Curcumin alleviates oxidative stress and inhibits apoptosis in diabetic cardiomyopathy via Sirt1-Foxo1 and PI3K-Akt signalling pathways.. J Cell Mol Med 24(21):12355-12367 PMID: 32961025
- 6. Yuan Z et al.. 2026. Macrophage-derived galectin-3 contributes to pyroptosis, apoptosis and necroptosis through TLR4/MyD88/NF-κB/NLRP3 during atherosclerosis.. Clin Transl Med 16(3):e70637 PMID: 41795807
- 7. Liu Y et al.. 2023. DsbA-L interacting with catalase in peroxisome improves tubular oxidative damage in diabetic nephropathy.. Redox Biol 66:102855 PMID: 37597421
- 8. Mitra R et al.. 2017. Positive regulation of prostate cancer cell growth by lipid droplet forming and processing enzymes DGAT1 and ABHD5.. BMC Cancer 17(1):631 PMID: 28877685
