GO:0010884 positive regulation of lipid storage: Lipid Droplet Biology, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0010884 (positive regulation of lipid storage) describes any process that increases the rate, frequency or extent of lipid storage, the accumulation and maintenance of lipids in cells or tissues.
• Lipid storage is executed mainly through lipid droplets and is controlled by fatty acid uptake, glycerolipid synthesis, and droplet-associated proteins.
• Key regulators include ACSL3, CAV1, SLC27A3, STAT2, PINK1, and hydrogen sulfide signaling, which alter lipid accumulation in liver, kidney, and neuronal models.
• Dysregulated lipid storage contributes to obesity, nonalcoholic fatty liver disease, clear cell renal cell carcinoma, and α-synuclein-related neuronal death.
• CRISPR knockout, point mutation, knock-in, and overexpression models allow causal testing of lipid storage genes in relevant cell types.
• EDITGENE provides end-to-end CRISPR cell model and library screening services to dissect positive regulation of lipid storage.
Description
GO:0010884, positive regulation of lipid storage, is a biological process term that captures any mechanism increasing the rate, frequency or extent of lipid storage, defined as the accumulation and maintenance of lipids in cells or tissues. Lipids are compounds soluble in organic solvents but insoluble or sparingly soluble in aqueous solvents, and their storage can be accumulated during early developmental stages for mobilization and utilization at later stages. Because lipid storage is central to energy homeostasis, membrane biogenesis, and signaling, its positive regulation is a major research focus in obesity, metabolic dysfunction-associated steatotic liver disease, cancer, and neurodegeneration. At the cellular level, positive regulation of lipid storage is often studied through lipid droplet formation and growth, fatty acid uptake, and glycerolipid synthesis. Trans fatty acids, for example, can modulate lipid storage and lipolysis pathways, illustrating how dietary and signaling inputs converge on this process. In disease contexts, somatic mutations in metabolism genes in chronic liver disease and nanoparticle-mediated ACSL3 silencing in hepatocellular carcinoma demonstrate that altering lipid storage regulation has direct pathological consequences. For researchers, GO:0010884 provides a precise ontology anchor to interpret transcriptomic, proteomic, and imaging data, and to design CRISPR models that test causality rather than correlation. This article integrates the QuickGO definition with verified PubMed literature to outline mechanisms, key genes, disease links, and experimental strategies for studying positive regulation of lipid storage.
positive regulation of lipid storage At A Glance
| GO ID | GO:0010884 |
|---|---|
| GO term | positive regulation of lipid storage |
| Ontology | biological_process |
| Synonym | positive regulation of lipid sequestration |
| Major function | Increases the rate, frequency or extent of lipid storage, the accumulation and maintenance of lipids in cells or tissues |
| Definition source | QuickGO definition of GO:0010884 |
| Related processes | Lipid storage, lipolysis, lipotoxicity, fatty acid uptake, glycerolipid synthesis |
| Disease relevance | Obesity, nonalcoholic fatty liver disease, clear cell renal cell carcinoma, α-synuclein-related neuronal death |
| Experimental models | CRISPR knockout, point mutation, knock-in, overexpression, and library screening in hepatic, renal, and neuronal cells |
What Is GO:0010884?
In simple terms, GO:0010884 describes the set of processes that make cells store more fat. The QuickGO definition states: Any process that increases the rate, frequency or extent of lipid storage. Lipid storage is the accumulation and maintenance in cells or tissues of lipids, compounds soluble in organic solvents but insoluble or sparingly soluble in aqueous solvents. Lipid reserves can be accumulated during early developmental stages for mobilization and utilization at later stages of development. The synonym positive regulation of lipid sequestration is also used. This term is a biological process and is not a single gene function; it is a regulatory outcome that can be achieved by many molecular mechanisms, including increased fatty acid uptake, enhanced glycerolipid synthesis, and stabilization of lipid droplets.
Why Is positive regulation of lipid storage Important in Cell Biology?
Positive regulation of lipid storage is important because it sits at the intersection of energy balance, membrane homeostasis, and disease. Excessive lipid storage underlies obesity and lipotoxicity, while insufficient or mislocalized storage contributes to lipodystrophy and metabolic stress. In cancer, lipid storage supports rapid proliferation and drug resistance, as shown by STAT2/SLC27A3/PINK1-mediated mitophagy remodeling lipid metabolism in pazopanib-resistant clear cell renal cell carcinoma. In the liver, caveolin-1 is critical for hepatic iron storage capacity in nonalcoholic fatty liver disease, linking lipid storage regulation to iron handling and disease progression. In neurons, ferroptosis inhibition protects against α-synuclein-related neuronal cell death, connecting lipid storage and oxidative stress to neurodegeneration. Understanding GO:0010884 therefore informs therapeutic strategies across metabolic, oncologic, and neurodegenerative disorders.
• Controls energy homeostasis by balancing lipid accumulation and mobilization.
• Regulates lipid droplet formation and growth, affecting cellular stress responses.
• Modulates fatty acid uptake and glycerolipid synthesis, key entry points for storage.
• Contributes to obesity and lipotoxicity when chronically activated.
• Links to nonalcoholic fatty liver disease through hepatic iron and lipid storage.
• Supports cancer cell survival and drug resistance in clear cell renal cell carcinoma.
• Interacts with redox and ferroptosis pathways in neurodegeneration.
• Is modulated by hydrogen sulfide signaling with implications for cardiovascular health.
• Provides a mechanistic target for nanoparticle-mediated ACSL3 silencing in hepatocellular carcinoma.
• Can be dissected causally using CRISPR knockout, point mutation, knock-in, and overexpression models.
What Happens During positive regulation of lipid storage?
Fatty acid uptake and activation
In simple terms: Cells first take in fatty acids and prepare them for storage.
Positive regulation of lipid storage begins with increased fatty acid uptake and activation. Trans fatty acids can alter membrane lipid composition and modulate pathways that influence lipid storage and lipolysis. ACSL3, a long-chain acyl-CoA synthetase, activates fatty acids for incorporation into glycerolipids, and its silencing by nanoparticles inhibits hepatocellular carcinoma growth and metastasis, indicating that ACSL3-dependent lipid storage supports tumor progression. SLC27A3, a fatty acid transport protein, is part of a STAT2/SLC27A3/PINK1 mitophagy axis that remodels lipid metabolism in clear cell renal cell carcinoma.
Glycerolipid synthesis and lipid droplet assembly
In simple terms: Activated fatty acids are assembled into storage lipids and packaged into lipid droplets.
Once activated, fatty acids are esterified into triacylglycerols and other glycerolipids, which are packaged into lipid droplets. The QuickGO definition emphasizes accumulation and maintenance of lipids, reflecting the balance between synthesis and turnover. Caveolin-1 is critical for hepatic iron storage capacity in nonalcoholic fatty liver disease, and caveolae-associated signaling influences lipid storage and membrane organization. Hydrogen sulfide signaling regulates lipid metabolism with implications for cardiovascular health, further linking lipid droplet assembly to redox and vascular biology.
Lipid droplet stabilization and maintenance
In simple terms: Once formed, lipid droplets are stabilized so stored fat is maintained.
Maintenance of lipid stores requires proteins that stabilize lipid droplets and prevent excessive lipolysis. The definition of GO:0010884 includes maintenance of lipids in cells or tissues, not only their initial accumulation. In obesity, the balance between lipid storage and lipolysis determines lipotoxicity, and chronic positive regulation of storage can lead to enlarged droplets and cellular stress. Ferroptosis inhibition protects against α-synuclein-related neuronal cell death, suggesting that lipid storage and oxidative stress pathways intersect in neurons.
Mitophagy and metabolic remodeling
In simple terms: Cells can remodel their mitochondria to shift lipid storage up or down.
Mitophagy and mitochondrial remodeling are emerging as regulators of lipid storage. STAT2/SLC27A3/PINK1-mediated mitophagy remodeling lipid metabolism contributes to pazopanib resistance in clear cell renal cell carcinoma, showing that positive regulation of lipid storage can be coupled to mitochondrial quality control. Somatic mutations in metabolism genes in chronic liver disease further indicate that genetic alterations in metabolic pathways can shift lipid storage set points.
Systemic and developmental context
In simple terms: Lipid storage can be turned up during development and later mobilized when needed.
The QuickGO definition notes that lipid reserves can be accumulated during early developmental stages for mobilization and utilization at later stages of development. This developmental dimension means positive regulation of lipid storage is not only a pathological process but also a normal physiological program. In obesity, however, chronic activation of storage pathways without matching mobilization leads to lipotoxicity and metabolic disease. Hydrogen sulfide signaling provides one example of a systemic modulator that can influence lipid metabolism and cardiovascular health.
Key Genes Involved in GO:0010884 positive regulation of lipid storage
The following genes and proteins have been experimentally linked to positive regulation of lipid storage or to closely related lipid storage processes in the verified literature.
| Gene | Major Role | Research Relevance |
|---|---|---|
| ACSL3 | Activates long-chain fatty acids for glycerolipid synthesis and lipid storage | Nanoparticle-mediated ACSL3 silencing inhibits hepatocellular carcinoma growth and metastasis |
| CAV1 | Caveolae structural protein; critical for hepatic iron storage capacity in NAFLD | Links lipid storage regulation to iron handling and nonalcoholic fatty liver disease |
| SLC27A3 | Fatty acid transport protein involved in lipid metabolism remodeling | Part of STAT2/SLC27A3/PINK1 mitophagy axis in pazopanib-resistant clear cell renal cell carcinoma |
| STAT2 | Transcription factor linked to mitophagy and lipid metabolism remodeling | Contributes to pazopanib resistance in clear cell renal cell carcinoma |
| PINK1 | Mitophagy kinase; regulates mitochondrial quality control and lipid metabolism | Mediates mitophagy remodeling of lipid metabolism in clear cell renal cell carcinoma |
| CBS | Hydrogen sulfide-producing enzyme; regulates lipid metabolism | Hydrogen sulfide signaling impacts cardiovascular health via lipid metabolism |
| CSE | Hydrogen sulfide-producing enzyme; regulates lipid metabolism | Hydrogen sulfide signaling impacts cardiovascular health via lipid metabolism |
| 3-MST | Hydrogen sulfide-producing enzyme; regulates lipid metabolism | Hydrogen sulfide signaling impacts cardiovascular health via lipid metabolism |
| SCD1 | Desaturase that generates monounsaturated fatty acids for storage | Trans fatty acids modulate lipid storage and lipolysis pathways |
| DGAT1 | Diacylglycerol acyltransferase; final step of triacylglycerol synthesis | Core enzyme for lipid droplet assembly and positive regulation of lipid storage |
| DGAT2 | Diacylglycerol acyltransferase; triacylglycerol synthesis | Core enzyme for lipid droplet assembly and positive regulation of lipid storage |
| PLIN1 | Lipid droplet coat protein; restricts lipolysis | Maintains lipid stores and prevents excessive lipolysis |
| PLIN2 | Lipid droplet coat protein; stabilizes droplets | Maintains lipid stores and prevents excessive lipolysis |
| ATGL | Adipose triglyceride lipase; initiates lipolysis | Counterbalances positive regulation of lipid storage |
| HSL | Hormone-sensitive lipase; hydrolyzes stored lipids | Counterbalances positive regulation of lipid storage |
| FABP4 | Fatty acid binding protein; facilitates fatty acid trafficking | Supports lipid storage and metabolic signaling |
| CD36 | Fatty acid translocase; mediates fatty acid uptake | Increases substrate supply for lipid storage |
| PPARG | Master transcription factor of adipogenesis and lipid storage | Drives expression of lipid storage genes |
How Is positive regulation of lipid storage Regulated?
Positive regulation of lipid storage is controlled by a network of signaling and transcriptional inputs. Insulin and nutrient signaling promote storage, whereas fasting and catecholamines promote lipolysis. Trans fatty acids can modulate membrane and signaling pathways that influence lipid storage and lipolysis. Hydrogen sulfide signaling regulates lipid metabolism with implications for cardiovascular health, indicating that gasotransmitters can tune storage pathways. In cancer, STAT2/SLC27A3/PINK1-mediated mitophagy remodels lipid metabolism and contributes to pazopanib resistance, showing that mitochondrial quality control can positively regulate lipid storage. Somatic mutations in metabolism genes in chronic liver disease further suggest that genetic lesions can shift the regulatory balance toward increased storage. Caveolin-1 is critical for hepatic iron storage capacity in nonalcoholic fatty liver disease, linking iron and lipid storage regulation.
positive regulation of lipid storage and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| ACSL3 | Hepatocellular carcinoma growth and metastasis | ACSL3 knockout or silencing in hepatocellular carcinoma cell lines |
| CAV1 | Nonalcoholic fatty liver disease and hepatic iron storage | CAV1 knockout or overexpression in hepatocytes |
| STAT2/SLC27A3/PINK1 | Pazopanib resistance in clear cell renal cell carcinoma | Knockout or point mutation in clear cell renal cell carcinoma cells |
| CBS/CSE/3-MST | Cardiovascular health and lipid metabolism | Knockout or overexpression in endothelial or vascular cells |
| SNCA | α-Synuclein-related neuronal cell death and ferroptosis | SNCA overexpression with ferroptosis inhibition in neuronal cells |
Obesity and lipotoxicity
Obesity is characterized by excessive lipid storage and lipotoxicity, where chronic positive regulation of lipid storage exceeds the capacity for safe storage and mobilization. The balance between lipid storage and lipolysis determines whether lipids are safely sequestered or cause cellular stress. Trans fatty acids can modulate lipid storage and lipolysis pathways, providing a dietary link to obesity-related metabolic dysfunction.
Nonalcoholic fatty liver disease
Caveolin-1 is critical for hepatic iron storage capacity in the development of nonalcoholic fatty liver disease, connecting lipid storage regulation to iron handling and liver disease progression. Somatic mutations in metabolism genes in chronic liver disease further support a role for genetic alterations in lipid storage pathways in liver pathology. ACSL3 silencing inhibits hepatocellular carcinoma growth and metastasis, indicating that lipid storage regulation can also drive liver cancer.
Clear cell renal cell carcinoma and drug resistance
STAT2/SLC27A3/PINK1-mediated mitophagy remodeling lipid metabolism contributes to pazopanib resistance in clear cell renal cell carcinoma. This demonstrates that positive regulation of lipid storage can support cancer cell survival under targeted therapy, making lipid storage pathways potential therapeutic targets.
Neurodegeneration and ferroptosis
Ferroptosis inhibition protects against α-synuclein-related neuronal cell death, linking lipid storage and oxidative stress pathways to neurodegeneration. Hydrogen sulfide signaling regulates lipid metabolism with implications for cardiovascular health, and similar redox-lipid interactions may influence neuronal survival.
From positive regulation of lipid storage-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Is ACSL3 causally required for lipid storage and tumor growth? | ACSL3 knockout in hepatocellular carcinoma cells |
| Does a point mutation in a lipid storage gene alter lipid droplet size? | CRISPR point mutation knock-in in hepatic or renal cell lines |
| Does tagging a lipid droplet protein affect its localization? | Tagged knock-in of PLIN1 or PLIN2 in adipocyte-like cells |
| Does overexpression of CAV1 increase hepatic lipid storage? | CAV1 overexpression in hepatocytes |
| Does loss of PINK1 alter mitophagy-dependent lipid storage? | PINK1 knockout in clear cell renal cell carcinoma cells |
| Which genes positively regulate lipid storage in a genome-wide screen? | CRISPR library screening in lipid droplet reporter cells |
How to Study the positive regulation of lipid storage Process
| Method | What It Measures | Typical Application |
|---|---|---|
| BODIPY or Oil Red O staining | Lipid droplet number and size | Quantify lipid storage in knockout or overexpression cells |
| RNA sequencing | Transcriptional changes in lipid storage genes | Identify pathways altered by genetic perturbations |
| Proteomics | Protein abundance and lipid droplet composition | Discover lipid droplet-associated regulators |
| CRISPR knockout screen | Genes required for lipid storage | Unbiased discovery of positive regulators |
| Lipolysis assay | Glycerol and free fatty acid release | Measure storage versus mobilization balance |
| Mitophagy flux assay | Mitochondrial turnover | Link PINK1-mediated mitophagy to lipid storage |
| Ferroptosis assay | Lipid peroxidation and cell death | Study lipid storage in neurodegeneration models |
| Hydrogen sulfide measurement | H2S production and signaling | Assess gasotransmitter regulation of lipid metabolism |
Lipid droplet imaging and quantification
Fluorescence microscopy with lipid droplet dyes such as BODIPY or Oil Red O allows direct measurement of lipid storage in cells. This method is used to assess whether genetic perturbations increase or decrease lipid droplet number and size. In cancer cells, lipid droplet accumulation can be correlated with growth and metastasis phenotypes.
Transcriptomic and proteomic profiling
RNA sequencing and proteomics can identify genes and proteins whose expression changes with lipid storage states. Somatic mutation analyses in chronic liver disease have revealed metabolism gene alterations that may affect lipid storage. Proteomic studies of lipid droplet-associated proteins can reveal regulators such as PLIN1 and PLIN2.
Functional CRISPR screens
CRISPR knockout and activation screens with lipid droplet reporters enable unbiased discovery of positive regulators of lipid storage. Such screens can identify genes like ACSL3 and SLC27A3 that support lipid accumulation in specific cell types. Library screening combined with bioinformatics can prioritize hits for validation.
Metabolic and lipolysis assays
Lipolysis assays measure the release of glycerol and free fatty acids, providing a functional readout of the balance between lipid storage and mobilization. Trans fatty acid studies have used such assays to show modulation of lipid storage and lipolysis pathways. Hydrogen sulfide signaling studies have also assessed lipid metabolism endpoints in cardiovascular models.
How CRISPR Can Be Used to Study GO:0010884 positive regulation of lipid storage
Knockout
CRISPR knockout of candidate genes such as ACSL3, CAV1, or PINK1 can test whether they are required for positive regulation of lipid storage. For example, ACSL3 silencing inhibits hepatocellular carcinoma growth and metastasis, and knockout models can confirm causality in lipid storage phenotypes. Knockout of lipid droplet proteins like PLIN1 can increase lipolysis and reduce storage.
Point Mutation
CRISPR point mutation knock-in allows precise testing of disease-associated variants in lipid storage genes. Somatic mutations in metabolism genes in chronic liver disease can be modeled to determine whether they increase lipid storage. Point mutations in SLC27A3 or STAT2 may alter mitophagy and lipid metabolism in clear cell renal cell carcinoma.
Knock-in
Tagged knock-in of lipid droplet proteins such as PLIN1 or PLIN2 enables live-cell imaging of lipid storage dynamics. Knock-in of reporter cassettes into endogenous loci can provide physiological readouts of positive regulation of lipid storage. This approach is useful for tracking lipid droplet growth and maintenance in real time.
Overexpression
CRISPR overexpression or cDNA overexpression of genes like CAV1 or ACSL3 can test whether increased dosage drives lipid storage. CAV1 is critical for hepatic iron storage capacity in nonalcoholic fatty liver disease, and overexpression models can dissect its role in lipid storage. Overexpression of hydrogen sulfide-producing enzymes can also modulate lipid metabolism.
How EDITGENE Supports positive regulation of lipid storage Research
Researchers studying positive regulation of lipid storage-related genes often need to determine whether a candidate gene is causally involved in lipid accumulation or is merely correlated with it. CRISPR-based models provide the gold standard for such causal testing, and EDITGENE offers a comprehensive suite of services to generate and characterize these models.
Contact EDITGENE today to design your custom CRISPR model for positive regulation of lipid storage research.
Frequently Asked Questions About positive regulation of lipid storage
What is GO:0010884 positive regulation of lipid storage?
GO:0010884 is a biological process term describing any process that increases the rate, frequency or extent of lipid storage, the accumulation and maintenance of lipids in cells or tissues.
What genes are involved in positive regulation of lipid storage?
Key genes include ACSL3, CAV1, SLC27A3, STAT2, PINK1, and hydrogen sulfide-producing enzymes such as CBS, CSE, and 3-MST.
How is lipid storage regulated in cells?
Lipid storage is regulated by fatty acid uptake, glycerolipid synthesis, lipid droplet stabilization, and signaling pathways such as insulin and hydrogen sulfide.
What diseases are linked to positive regulation of lipid storage?
Obesity, nonalcoholic fatty liver disease, clear cell renal cell carcinoma, and α-synuclein-related neuronal death are linked to altered lipid storage.
What is the role of ACSL3 in lipid storage?
ACSL3 activates long-chain fatty acids for glycerolipid synthesis, and its silencing inhibits hepatocellular carcinoma growth and metastasis.
How does caveolin-1 affect lipid storage in the liver?
Caveolin-1 is critical for hepatic iron storage capacity in nonalcoholic fatty liver disease, linking lipid storage regulation to iron handling.
Can CRISPR be used to study positive regulation of lipid storage?
Yes, CRISPR knockout, point mutation, knock-in, and overexpression models allow causal testing of lipid storage genes in relevant cell types.
What methods measure lipid storage in cells?
BODIPY or Oil Red O staining, lipolysis assays, RNA sequencing, proteomics, and CRISPR screens are commonly used to measure lipid storage.
What is the connection between mitophagy and lipid storage?
STAT2/SLC27A3/PINK1-mediated mitophagy remodels lipid metabolism and contributes to pazopanib resistance in clear cell renal cell carcinoma.
How does hydrogen sulfide regulate lipid metabolism?
Hydrogen sulfide signaling regulates lipid metabolism with implications for cardiovascular health.
Conclusion
GO:0010884 positive regulation of lipid storage is a central biological process that integrates fatty acid uptake, glycerolipid synthesis, lipid droplet maintenance, and mitochondrial remodeling. Its dysregulation contributes to obesity, liver disease, cancer, and neurodegeneration, making it a high-value target for mechanistic and therapeutic research. CRISPR-based models and library screening provide the causal evidence needed to move from correlation to function, and EDITGENE offers the tools and expertise to accelerate these discoveries.
References
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- 2. Oteng AB et al.. 2020. Mechanisms of Action of trans Fatty Acids.. Adv Nutr 11(3):697-708 PMID: 31782488
- 3. Huang L et al.. 2025. Modulating lipid metabolism by nanoparticles (NPs)-mediated ACSL3 silencing to inhibit hepatocellular carcinoma growth and metastasis.. Mol Cancer 24(1):73 PMID: 40059153
- 4. Ng SWK et al.. 2021. Convergent somatic mutations in metabolism genes in chronic liver disease.. Nature 598(7881):473-478 PMID: 34646017
- 5. Deng GH et al.. 2023. Caveolin-1 is critical for hepatic iron storage capacity in the development of nonalcoholic fatty liver disease.. Mil Med Res 10(1):53 PMID: 37941054
- 6. Majerníková N et al.. 2025. Ferroptosis inhibition protects against α-synuclein-related neuronal cell death.. Cell Death Dis 17(1):78 PMID: 41390672
- 7. Lu D et al.. 2024. STAT2/SLC27A3/PINK1-Mediated Mitophagy Remodeling Lipid Metabolism Contributes to Pazopanib Resistance in Clear Cell Renal Cell Carcinoma.. Research (Wash D C) 7:0539 PMID: 39600540
- 8. Flori L et al.. 2024. Role of hydrogen sulfide in the regulation of lipid metabolism: Implications on cardiovascular health.. Life Sci 341:122491 PMID: 38336275
