GO:0071379 cellular response to prostaglandin stimulus: Signaling Pathway, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0071379 describes any process by which a cell changes its state or activity in response to a prostaglandin stimulus, including movement, secretion, enzyme production and gene expression.
• Prostaglandin signaling is initiated by cyclooxygenases (COX-1/COX-2) that convert arachidonic acid to PGH2, which is then isomerized to bioactive prostaglandins such as PGE2, PGF2α, PGI2 and TXA2.
• The cellular response to prostaglandins is mediated by G-protein-coupled receptors (EP1-EP4, FP, IP, TP) and downstream second-messenger pathways that alter transcription, secretion and cell behavior.
• Prostaglandin responses are central to fever, inflammation, pain, tissue remodeling and skin biology, and are implicated in diseases ranging from arthritis to cancer.
• Key experimental models include COX knockout mice, EP receptor knockout mice, and cell-based assays using PGE2 or selective agonists/antagonists.
• EDITGENE provides CRISPR knockout, point-mutation, knock-in, overexpression cell models and library screening to dissect prostaglandin response pathways.
Description
The Gene Ontology term GO:0071379, cellular response to prostaglandin stimulus, defines the cellular processes triggered when a cell encounters a prostaglandin. Prostaglandins are lipid mediators derived from arachidonic acid through the sequential action of cyclooxygenases (COX-1 and COX-2) and specific synthases. Once released, they act locally through G-protein-coupled receptors to modulate diverse cellular activities including secretion, enzyme production, gene expression and movement. This term is essential for annotating gene products involved in inflammatory, febrile and homeostatic responses. Researchers studying inflammation, fever, skin biology and aging rely on this ontology term to connect molecular events to organism-level physiology. Understanding the cellular response to prostaglandin stimulus also informs drug discovery targeting COX enzymes and prostaglandin receptors.
cellular response to prostaglandin stimulus At A Glance
| GO ID | GO:0071379 |
|---|---|
| GO term | cellular response to prostaglandin stimulus |
| Ontology | biological_process |
| Synonym | none |
| Major function | Mediates cellular changes (secretion, enzyme production, gene expression, movement) in response to prostaglandins |
| Definition source | QuickGO |
| Related stimuli | Prostaglandin E2 (PGE2), PGF2α, PGI2, TXA2, PGD2 |
| Key upstream enzymes | Cyclooxygenase-1 (COX-1), Cyclooxygenase-2 (COX-2) |
| Key receptors | EP1, EP2, EP3, EP4, FP, IP, TP |
| Representative cell types | Keratinocytes, mast cells, fibroblasts, neurons, immune cells |
What Is GO:0071379?
According to QuickGO, GO:0071379 (cellular response to prostaglandin stimulus) is any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a prostaglandin stimulus. In other words, it captures all intracellular signaling and functional changes that occur when a cell detects a prostaglandin molecule in its environment.
Why Is cellular response to prostaglandin stimulus Important in Cell Biology?
GO:0071379 is important because prostaglandin signaling is a fundamental mechanism by which cells respond to inflammation, injury and physiological cues. It underlies fever generation, pain sensitization, tissue remodeling and skin homeostasis. Dysregulation of this response contributes to chronic inflammatory diseases, cancer progression and age-related changes. Understanding the cellular response to prostaglandin stimulus at the molecular level enables the development of targeted therapies that modulate COX enzymes or prostaglandin receptors.
• Fever and thermoregulation: prostaglandin E2 acts on preoptic EP3R neurons to switch between fever and torpor.
• Inflammation: COX-2-derived prostaglandins are central mediators of inflammatory responses in many tissues.
• Skin biology: COX-2 expression is associated with human keratinocyte differentiation, linking prostaglandin responses to epidermal homeostasis.
• Cellular aging: prostaglandin production changes with cellular aging, suggesting a role in senescence.
• Mast cell biology: human skin mast cells produce and respond to prostaglandins, contributing to allergic and inflammatory reactions.
• Airway inflammation: IL-33 enhances mast cell mediator release in human small airways, a process involving prostaglandin responses.
• Choroid plexus response: peripheral inflammatory stimuli trigger choroid plexus responses that include prostaglandin signaling.
• Gingival fibroblasts: BMP4 micro-immunotherapy reduces PGE2 release in human gingival fibroblasts under inflammatory conditions.
• Drug targeting: COX inhibitors (NSAIDs) and EP receptor antagonists are used clinically, highlighting the therapeutic relevance of this pathway.
• CRISPR modeling: knockout and knock-in models of COX and prostaglandin receptor genes enable causal dissection of this response.
What Happens During cellular response to prostaglandin stimulus?
Prostaglandin synthesis and release
In simple terms: Cells first make prostaglandins from fats using COX enzymes.
Prostaglandin synthesis begins with arachidonic acid, which is converted by cyclooxygenase-1 (COX-1) or cyclooxygenase-2 (COX-2) to prostaglandin H2 (PGH2). PGH2 is then isomerized by specific synthases to bioactive prostaglandins such as PGE2, PGF2α, PGD2, PGI2 and TXA2. COX-2 is often induced in response to inflammatory stimuli, whereas COX-1 is constitutively expressed in many tissues. In human keratinocytes, COX-2 expression is associated with differentiation, indicating cell-type-specific regulation. Once synthesized, prostaglandins are released into the extracellular space and can act in an autocrine or paracrine manner.
Receptor binding and signal transduction
In simple terms: Prostaglandins bind to specific receptors on the cell surface, triggering signals inside the cell.
Prostaglandins exert their effects by binding to G-protein-coupled receptors: PGE2 acts via EP1, EP2, EP3 and EP4; PGF2α via FP; PGI2 via IP; and TXA2 via TP. These receptors couple to different G proteins (Gs, Gi, Gq), leading to changes in cyclic AMP, calcium and other second messengers. For example, EP3R in preoptic neurons mediates fever and torpor responses. The specific receptor repertoire determines the cellular outcome of prostaglandin stimulation.
Downstream cellular changes
In simple terms: The signal causes the cell to change what it does, such as secreting substances or turning genes on or off.
Activation of prostaglandin receptors leads to diverse cellular responses including secretion, enzyme production, gene expression changes and cell movement. In mast cells, prostaglandin stimulation can enhance mediator release, contributing to allergic responses. In gingival fibroblasts, PGE2 release is modulated under inflammatory conditions. The choroid plexus responds to peripheral inflammatory stimuli with changes that include prostaglandin-dependent signaling. These downstream effects are context-dependent and vary by cell type.
Integration with other signaling pathways
In simple terms: Prostaglandin signals talk to other pathways to fine-tune the cell's response.
Prostaglandin signaling intersects with other inflammatory and homeostatic pathways. For instance, IL-33 enhances mast cell responsiveness and mediator release in human small airways, a process that may involve prostaglandin signaling. BMP4 micro-immunotherapy reduces PGE2 release in human gingival fibroblasts, indicating cross-talk between BMP and prostaglandin pathways. In the choroid plexus, peripheral inflammatory stimuli trigger a coordinated response that includes prostaglandin-mediated events. Such integration ensures that cellular responses are appropriate to the physiological context.
Termination and feedback
In simple terms: The cell shuts down the response when the prostaglandin signal is no longer needed.
Prostaglandin signaling is terminated by degradation of prostaglandins and desensitization of receptors. Enzymes such as 15-hydroxyprostaglandin dehydrogenase (15-PGDH) metabolize prostaglandins, while receptor phosphorylation and internalization reduce sensitivity. Feedback loops also regulate COX-2 expression, which is tightly controlled at transcriptional and post-transcriptional levels. In aging cells, prostaglandin production and response may change, reflecting altered feedback regulation.
Key Genes Involved in GO:0071379 cellular response to prostaglandin stimulus
The following genes and proteins are central to the cellular response to prostaglandin stimulus, based on published literature.
| Gene | Major Role | Research Relevance |
|---|---|---|
| PTGS1 (COX-1) | Constitutive cyclooxygenase that converts arachidonic acid to PGH2 | Maintains basal prostaglandin production; target for studying housekeeping responses |
| PTGS2 (COX-2) | Inducible cyclooxygenase that produces PGH2 during inflammation | Key drug target; knockout models used to study inflammation and fever |
| PTGES | Microsomal prostaglandin E synthase, converts PGH2 to PGE2 | Determines PGE2 levels; relevant to fever and pain |
| PTGER1 (EP1) | PGE2 receptor coupled to Gq/calcium signaling | Mediates smooth muscle contraction and pain |
| PTGER2 (EP2) | PGE2 receptor coupled to Gs/cyclic AMP | Involved in inflammation and immune regulation |
| PTGER3 (EP3) | PGE2 receptor coupled to Gi; mediates fever and torpor | Target for thermoregulation studies; preoptic EP3R neurons |
| PTGER4 (EP4) | PGE2 receptor coupled to Gs; promotes cAMP | Roles in bone, inflammation and cancer |
| PTGFR (FP) | PGF2α receptor | Mediates uterine contraction and ocular pressure |
| PTGIR (IP) | PGI2 receptor | Vasodilation and platelet inhibition |
| TBXA2R (TP) | TXA2 receptor | Platelet aggregation and vascular tone |
| HPGD (15-PGDH) | Degrades prostaglandins | Terminates signaling; relevant to cancer and aging |
| PLA2G4A (cPLA2α) | Releases arachidonic acid from membranes | Upstream of COX; regulates substrate availability |
| PTGIS | Prostacyclin synthase, converts PGH2 to PGI2 | Vascular biology and inflammation |
| TBXAS1 | Thromboxane synthase, converts PGH2 to TXA2 | Thrombosis and vascular tone |
| IL33 | Cytokine that enhances mast cell mediator release | Modulates prostaglandin-related airway responses |
| BMP4 | Growth factor that reduces PGE2 release in gingival fibroblasts | Cross-talk with prostaglandin pathways |
| KRT (keratins) | Keratinocyte differentiation markers | COX-2 expression associated with differentiation |
| EP3R neurons (preoptic) | Neuronal population mediating fever and torpor | Central role in thermoregulation via PGE2 |
How Is cellular response to prostaglandin stimulus Regulated?
The cellular response to prostaglandin stimulus is regulated at multiple levels. Prostaglandin synthesis is controlled by the expression and activity of COX-1 and COX-2, with COX-2 being highly inducible by inflammatory stimuli. Substrate availability is regulated by phospholipase A2 enzymes that release arachidonic acid. Receptor expression levels and desensitization mechanisms modulate cellular sensitivity to prostaglandins. Degradation by 15-PGDH terminates the signal. Additionally, cross-talk with other pathways, such as BMP4 signaling in gingival fibroblasts, can modulate PGE2 release. In the central nervous system, preoptic EP3R neurons integrate prostaglandin signals to regulate fever and torpor.
cellular response to prostaglandin stimulus and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| PTGS2 (COX-2) | Inflammation, cancer, fever | Knockout mice, cell lines with inducible COX-2 |
| PTGER3 (EP3) | Fever and torpor regulation | Preoptic neuron-specific knockout or knock-in mice |
| HPGD (15-PGDH) | Cancer, aging | Overexpression or knockout cell models |
| IL33 | Asthma, allergic inflammation | Mast cell co-culture with airway epithelial cells |
| BMP4 | Gingival inflammation | Human gingival fibroblast cultures treated with BMP4 |
Inflammation and fever
Prostaglandin E2 acts on preoptic EP3R neurons to induce fever, a hallmark of systemic inflammation. COX-2-derived prostaglandins are central to inflammatory pain and swelling, and COX inhibitors are widely used to treat these conditions. Dysregulated prostaglandin signaling contributes to chronic inflammatory diseases such as arthritis and inflammatory bowel disease.
Skin biology and aging
COX-2 expression is associated with human keratinocyte differentiation, linking prostaglandin responses to epidermal homeostasis. Prostaglandin production changes with cellular aging, suggesting a role in age-related skin changes and senescence. Human skin mast cells produce prostaglandins and respond to them, contributing to allergic and inflammatory skin reactions.
Airway and allergic diseases
IL-33 enhances mast cell mediator release in human small airways, a process that involves prostaglandin responses. This pathway is relevant to asthma and allergic inflammation. Prostaglandin D2 and its receptors are also implicated in allergic responses.
Cancer and tissue remodeling
COX-2 is overexpressed in many cancers and promotes tumor progression through prostaglandin-mediated effects on proliferation, angiogenesis and immune evasion. 15-PGDH, which degrades prostaglandins, can act as a tumor suppressor. Prostaglandin signaling also influences tissue remodeling in conditions such as gingival inflammation.
From cellular response to prostaglandin stimulus-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does COX-2 drive inflammatory prostaglandin production? | PTGS2 knockout cell line or mouse model |
| How does EP3R mediate fever? | Preoptic EP3R neuron-specific knockout or knock-in mice |
| What is the role of 15-PGDH in prostaglandin degradation? | HPGD overexpression or knockout cells |
| How does IL-33 modulate mast cell prostaglandin release? | Human small airway mast cell cultures with IL-33 treatment |
| Does BMP4 reduce PGE2 in gingival fibroblasts? | Human gingival fibroblast cultures with BMP4 micro-immunotherapy |
| How does COX-2 expression relate to keratinocyte differentiation? | Cultured human keratinocytes with differentiation inducers |
How to Study the cellular response to prostaglandin stimulus Process
| Method | What It Measures | Typical Application |
|---|---|---|
| ELISA | Prostaglandin concentration in supernatants | Quantify PGE2 release from cells |
| RNA-seq | Global gene expression changes | Identify transcriptional responses to prostaglandins |
| CRISPR knockout screen | Genes required for prostaglandin response | Discover novel regulators |
| Calcium imaging | Intracellular calcium flux | Measure EP1/EP3 receptor activation |
| cAMP assay | Cyclic AMP levels | Measure EP2/EP4 receptor signaling |
| Western blot | Protein expression and phosphorylation | Assess COX-2 induction and signaling |
| Mass spectrometry | Prostaglandin species profiling | Comprehensive lipid mediator analysis |
| Immunohistochemistry | Tissue localization of COX enzymes | Study prostaglandin synthesis sites |
Measuring prostaglandin production
Prostaglandin levels can be quantified using enzyme-linked immunosorbent assays (ELISA) or mass spectrometry in cell culture supernatants. These methods are used to assess COX activity and the effects of genetic or pharmacological perturbations.
Gene expression analysis
RNA-seq or quantitative PCR can measure expression of COX enzymes, prostaglandin synthases and receptors in response to stimuli. This helps identify transcriptional changes underlying the cellular response to prostaglandin stimulus.
CRISPR-based genetic screens
Genome-wide CRISPR knockout or activation screens can identify genes that regulate prostaglandin responses, such as receptors or downstream signaling components. These screens are powerful for discovering novel modulators.
Imaging and functional assays
Calcium imaging, cAMP assays and live-cell imaging can monitor immediate signaling events after prostaglandin stimulation. Functional assays such as secretion or migration measure downstream cellular outcomes.
How CRISPR Can Be Used to Study GO:0071379 cellular response to prostaglandin stimulus
Knockout
CRISPR knockout of PTGS2 (COX-2) or prostaglandin receptors (e.g., PTGER3) can abolish specific arms of the cellular response to prostaglandin stimulus, enabling causal studies. Knockout cell lines are valuable for validating drug targets and dissecting signaling pathways.
Point Mutation
Point mutations can be introduced into prostaglandin receptor genes to mimic naturally occurring variants or to disrupt specific signaling motifs, allowing precise structure-function analysis. For example, mutations in EP3R can test its role in fever.
Knock-in
Knock-in of reporter genes (e.g., fluorescent proteins) into COX-2 or receptor loci enables real-time monitoring of expression and localization in response to prostaglandin stimuli. Tagged knock-in models can also facilitate protein interaction studies.
Overexpression
Overexpression of COX-2 or specific prostaglandin receptors can amplify the cellular response to prostaglandin stimulus, useful for studying downstream effects and for screening inhibitors. Overexpression models also help identify context-dependent signaling.
How EDITGENE Supports cellular response to prostaglandin stimulus Research
Researchers studying cellular response to prostaglandin stimulus-related genes often need to determine whether a candidate gene is causally involved in prostaglandin synthesis, reception or downstream signaling. EDITGENE provides a comprehensive suite of CRISPR services to create precisely engineered cell models for such investigations.
Contact EDITGENE today to design your custom CRISPR model for cellular response to prostaglandin stimulus research.
Frequently Asked Questions About cellular response to prostaglandin stimulus
What is GO:0071379?
GO:0071379 is the Gene Ontology term for cellular response to prostaglandin stimulus, describing any cellular change (movement, secretion, enzyme production, gene expression) resulting from a prostaglandin stimulus.
What genes are involved in cellular response to prostaglandin stimulus?
Key genes include PTGS1, PTGS2, PTGES, PTGER1-4, PTGFR, PTGIR, TBXA2R, HPGD, PLA2G4A and others involved in synthesis, reception and degradation of prostaglandins.
How do prostaglandins signal in cells?
Prostaglandins bind to G-protein-coupled receptors (EP1-4, FP, IP, TP), triggering second messenger changes such as cAMP and calcium, which alter cell behavior.
What is the role of COX-2 in prostaglandin response?
COX-2 is an inducible enzyme that converts arachidonic acid to PGH2, the precursor of all prostaglandins, and is a major regulator of inflammatory prostaglandin production.
How is prostaglandin signaling linked to fever?
PGE2 acts on preoptic EP3R neurons to induce fever and torpor, as shown in recent studies.
Can CRISPR be used to study prostaglandin responses?
Yes, CRISPR knockout, knock-in and overexpression models of COX enzymes and prostaglandin receptors are widely used to dissect these pathways.
What diseases involve prostaglandin signaling?
Prostaglandin signaling is implicated in inflammation, fever, cancer, skin disorders, allergic airway diseases and aging.
How do I measure prostaglandin release from cells?
ELISA or mass spectrometry of cell culture supernatants is commonly used to quantify prostaglandin levels.
What is the role of 15-PGDH in prostaglandin response?
15-PGDH degrades prostaglandins, terminating the signal, and is relevant to cancer and aging.
What model systems are used to study prostaglandin response?
Common models include COX knockout mice, EP receptor knockout mice, human keratinocytes, mast cells, gingival fibroblasts and choroid plexus cells.
Conclusion
GO:0071379, cellular response to prostaglandin stimulus, is a fundamental biological process that integrates lipid signaling with cellular behavior. It is essential for understanding inflammation, fever, tissue remodeling and aging, and it offers numerous targets for therapeutic intervention. Advances in CRISPR genome editing enable precise dissection of the genes and pathways involved, from COX enzymes to prostaglandin receptors and downstream effectors. Continued research using these tools will uncover new insights into prostaglandin biology and its role in health and disease.
References
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- 2. Clària J. 2003. Cyclooxygenase-2 biology.. Curr Pharm Des 9(27):2177-90 PMID: 14529398
- 3. Ferrà-Cañellas MDM et al.. 2021. BMP4 micro-immunotherapy increases collagen deposition and reduces PGE2 release in human gingival fibroblasts and increases tissue viability of engineered 3D gingiva under inflammatory conditions.. J Periodontol 92(10):1448-1459 PMID: 33393105
- 4. Leong J et al.. 1996. Cyclooxygenases in human and mouse skin and cultured human keratinocytes: association of COX-2 expression with human keratinocyte differentiation.. Exp Cell Res 224(1):79-87 PMID: 8612694
- 5. Taylor L et al.. 1981. Prostaglandin production and cellular aging.. Mech Ageing Dev 16(4):311-7 PMID: 6946268
- 6. Benyon RC. 1989. The human skin mast cell.. Clin Exp Allergy 19(4):375-87 PMID: 2667702
- 7. Belikova M et al.. 2026. IL-33 enhances responsiveness and mast cell mediator release in isolated human small airways.. J Allergy Clin Immunol 157(6):1285-1294.e8 PMID: 41763365
- 8. Marques F et al.. 2007. The choroid plexus response to peripheral inflammatory stimulus.. Neuroscience 144(2):424-30 PMID: 17069984
