GO:1990859 cellular response to endothelin: Signaling Mechanism, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:1990859 (cellular response to endothelin) describes how a cell changes its state or activity in response to endothelin-1, -2 or -3, three secretory vasoconstrictive peptides [1,4].
• Endothelin signaling triggers inositol lipid turnover and phosphatidic acid production, mobilizing calcium and magnesium in target cells [2,3,8].
• The pathway drives contraction in vascular smooth muscle, retinal veins, cardiomyocytes and hepatic Ito cells [1,5,7].
• Endothelin signaling from photoreceptors to glia is part of the genomic response to retinal disease and injury.
• Endothelin-modulated contractile responses involve phosphorylation of troponin I sites in cardiac muscle.
• CRISPR knockout, point-mutation, knock-in and overexpression models enable causal dissection of endothelin pathway genes in disease-relevant cell types.
Description
GO:1990859, cellular response to endothelin, is a biological process Gene Ontology term that captures any change in a cell's state or activity, including movement, secretion, enzyme production or gene expression, that occurs as a result of an endothelin stimulus [1,4]. Endothelins are a family of three secretory vasoconstrictive peptides, endothelin-1, endothelin-2 and endothelin-3, that act through G-protein-coupled endothelin receptors to modulate vascular tone and cellular physiology [4,8]. The term is important because endothelin signaling is a primary mechanism modulating retinal circulatory responses to hyperoxia and contributes to the genomic response to retinal disease and injury [4,6]. In the cardiovascular system, endothelin-1 increases phosphatidic acid in adult rabbit ventricular myocytes and modulates contractile responses through troponin I phosphorylation [3,5]. In the liver, endothelin-1 triggers Ito cell contraction, a key event in hepatic microcirculation. In the testis, endothelin and ATP stimulate inositol lipid-mediated signaling, showing the pathway operates beyond the vasculature. In vascular smooth muscle cells, endothelin mobilizes intracellular magnesium, linking the pathway to ion homeostasis. Researchers study GO:1990859 to understand how a single peptide stimulus is converted into diverse cellular outputs such as contraction, secretion and gene expression, and to identify therapeutic targets in retinal, cardiovascular and hepatic disease [1,4,5,7].
cellular response to endothelin At A Glance
| GO ID | GO:1990859 |
|---|---|
| GO term | cellular response to endothelin |
| Ontology | biological_process |
| Synonym | none |
| Definition | 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 an endothelin stimulus; endothelin is any of three secretory vasoconstrictive peptides (endothelin-1, -2, -3). |
| Major function | Transduces endothelin peptide signals into cellular responses such as contraction, ion mobilization, lipid signaling and gene expression [1,2,3,4,5,6,7,8]. |
| Stimulus | Endothelin-1, endothelin-2 or endothelin-3 peptides [1,4]. |
| Representative cell types | Vascular smooth muscle cells, retinal veins, cardiomyocytes, hepatic Ito cells, photoreceptors and glia [1,3,5,6,7,8]. |
| Key signaling outputs | Inositol lipid turnover, phosphatidic acid increase, intracellular Mg2+ mobilization, troponin I phosphorylation and contractile response [2,3,5,8]. |
What Is GO:1990859?
In our own words, GO:1990859 cellular response to endothelin is the collection of cellular processes that are initiated when a cell detects an endothelin peptide. The response can include changes in cell movement, secretion, enzyme activity and gene expression, and it is triggered by any of the three endothelin peptides: endothelin-1, endothelin-2 or endothelin-3 [1,4]. The term is a biological process and is distinct from the mere binding of endothelin to its receptor; it covers the downstream cellular consequences of that stimulus [2,3,8].
Why Is cellular response to endothelin Important in Cell Biology?
GO:1990859 is important because endothelin is one of the most potent vasoconstrictors known, and the cellular response to endothelin underlies physiological control of blood flow and pathological vasoconstriction in the retina, heart and liver [1,4,5,7]. The pathway is also part of the genomic response to retinal disease and injury, where endothelin signaling from photoreceptors to glia propagates damage signals. Because the response couples peptide stimulation to lipid signaling, ion mobilization and contractile protein phosphorylation, it is a model system for understanding how a single extracellular cue produces cell-type-specific outputs [2,3,5,8]. Targeting this process with CRISPR-engineered cell models can reveal causal genes and support therapeutic development.
• Endothelin-1 is a primary modulator of retinal circulatory responses to hyperoxia.
• Endothelin signaling from photoreceptors to glia is part of the genomic response to retinal disease and injury.
• Endothelin-1 increases phosphatidic acid in adult rabbit ventricular myocytes, linking the pathway to cardiac lipid signaling.
• Endothelin-modulated contractile responses depend on differential phosphorylation of troponin I sites.
• Endothelin-1 and substance P trigger Ito cell contraction, affecting hepatic microcirculation.
• Endothelin and ATP stimulate inositol lipid-mediated signaling in the mammalian testis.
• Endothelin mobilizes intracellular Mg2+ in vascular smooth muscle cells, connecting the pathway to ion homeostasis.
• Endothelial contraction of retinal veins is a direct cellular response to endothelin.
• The pathway is a target for understanding vasoconstriction in cardiovascular and retinal disease [1,4,5].
• CRISPR models of endothelin pathway genes can test causality in disease-relevant cell types.
What Happens During cellular response to endothelin?
Endothelin stimulus and receptor activation
In simple terms: A cell first sees an endothelin peptide and this triggers the response.
The cellular response to endothelin begins when a cell is exposed to one of the three endothelin peptides, endothelin-1, endothelin-2 or endothelin-3 [1,4]. Endothelin-1 acts via endothelin receptors to modulate retinal circulatory responses to hyperoxia, establishing receptor-mediated detection as the first step. In retinal disease and injury, endothelin signaling from photoreceptors to glia shows that the stimulus can originate from neighboring cells and propagate across cell types.
Inositol lipid and phosphatidic acid signaling
In simple terms: Inside the cell, lipids are rapidly remodeled to carry the signal forward.
A major downstream event is inositol lipid-mediated signaling in response to endothelin, as demonstrated in the mammalian testis where endothelin and ATP both stimulate this pathway. In adult rabbit ventricular myocytes, endothelin-1 increases phosphatidic acid, a lipid second messenger, showing that the response includes phospholipid remodeling. These lipid changes provide the biochemical basis for subsequent cellular outputs [2,3].
Ion mobilization and contractile activation
In simple terms: The cell changes its internal ion balance and can then contract.
Endothelin mobilizes intracellular Mg2+ in vascular smooth muscle cells, linking the response to ion homeostasis. In the vasculature, endothelial contraction of retinal veins is a direct cellular response to endothelin. In the liver, endothelin-1 and substance P trigger Ito cell contraction, extending the contractile output to hepatic stellate cells. In cardiomyocytes, endothelin modulates contractile responses through differential phosphorylation of troponin I sites.
Gene expression and cell-type-specific outputs
In simple terms: The cell can also change which genes it expresses, producing longer-term effects.
The genomic response to retinal disease and injury includes endothelin signaling from photoreceptors to glia, showing that the cellular response to endothelin involves changes in gene expression programs. The diversity of outputs, from contraction in smooth muscle and Ito cells to lipid signaling in testis and cardiomyocytes, demonstrates that the same endothelin stimulus produces cell-type-specific responses [1,2,3,5,7,8].
Key Genes Involved in GO:1990859 cellular response to endothelin
The following genes and proteins are experimentally implicated in the cellular response to endothelin, based on the verified literature.
| Gene | Major Role | Research Relevance |
|---|---|---|
| EDN1 | Encodes endothelin-1, the primary vasoconstrictive peptide stimulus | Central ligand for GO:1990859; studied in retinal, cardiac and hepatic responses [1,3,4,5,7]. |
| EDN2 | Encodes endothelin-2, one of the three endothelin peptides | Part of the endothelin stimulus family defined by GO:1990859 [1,4]. |
| EDN3 | Encodes endothelin-3, one of the three endothelin peptides | Part of the endothelin stimulus family defined by GO:1990859 [1,4]. |
| EDNRA | Endothelin receptor type A, mediates endothelin-1 actions | Receptor required for retinal circulatory responses to hyperoxia. |
| EDNRB | Endothelin receptor type B, mediates endothelin signaling | Receptor involved in endothelin responses in multiple cell types. |
| PLD | Phospholipase D family enzymes produce phosphatidic acid | Phosphatidic acid increases in response to endothelin-1 in ventricular myocytes. |
| PLCB | Phospholipase C beta generates inositol lipid signals | Inositol lipid-mediated signaling in response to endothelin in testis. |
| TNNI3 | Cardiac troponin I, phosphorylated in endothelin-modulated contraction | Differential phosphorylation sites contribute to endothelin-modulated contractile response. |
| MYH7 | Cardiac myosin heavy chain, contractile apparatus component | Contractile response modulated by endothelin in cardiomyocytes. |
| ACTA2 | Smooth muscle actin, contractile protein in vascular and Ito cells | Contraction of retinal veins and Ito cells in response to endothelin [1,7]. |
| MYL9 | Myosin light chain, regulates smooth muscle contraction | Contractile output of endothelin response in vascular and hepatic cells [1,7]. |
| TRPM7 | Magnesium-permeable channel implicated in Mg2+ homeostasis | Endothelin mobilizes intracellular Mg2+ in vascular smooth muscle cells. |
| SLC41A1 | Magnesium transporter family member | Intracellular Mg2+ mobilization in response to endothelin. |
| GFAP | Glial fibrillary acidic protein, glial marker | Endothelin signaling from photoreceptors to glia in retinal injury. |
| RLBP1 | Retinaldehyde binding protein, Müller glia marker | Glial response to endothelin signaling in retinal disease. |
| VIM | Vimentin, intermediate filament in glia and mesenchymal cells | Glial and Ito cell responses to endothelin [6,7]. |
| ATP1A1 | Na+/K+-ATPase, ion homeostasis | Ion mobilization downstream of endothelin. |
| PRKCA | Protein kinase C alpha, downstream of lipid signaling | Inositol lipid and phosphatidic acid signaling in endothelin response [2,3]. |
How Is cellular response to endothelin Regulated?
The cellular response to endothelin is regulated at multiple levels. Receptor availability and subtype composition determine which cells respond to endothelin-1, -2 or -3. Downstream, inositol lipid turnover and phosphatidic acid production are rapidly modulated, as shown in testis and ventricular myocytes [2,3]. Intracellular Mg2+ mobilization in vascular smooth muscle cells provides an additional regulatory node. Contractile output is tuned by phosphorylation of specific troponin I sites in cardiomyocytes. In retinal injury, the response is regulated by intercellular signaling from photoreceptors to glia, adding a tissue-level control layer.
cellular response to endothelin and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| EDN1 | Retinal circulatory dysfunction and vasoconstriction | Endothelial cell knockout of EDN1 with retinal vein contraction assay [1,4]. |
| EDNRA | Retinal hyperoxia response and ischemia | Point-mutation knock-in of EDNRA in retinal endothelial cells. |
| TNNI3 | Cardiac contractile dysfunction | Phospho-site point mutations in cardiomyocytes. |
| ACTA2 | Hepatic Ito cell contraction and fibrosis | Knockout in hepatic stellate cells with contraction assay. |
| TRPM7 | Vascular Mg2+ homeostasis and tone | Overexpression and knockout in vascular smooth muscle cells. |
Retinal vascular and ischemic disease
Endothelin-1 action via endothelin receptors is a primary mechanism modulating retinal circulatory responses to hyperoxia, and endothelial contraction of retinal veins is a direct cellular response to endothelin [1,4]. The genomic response to retinal disease and injury includes endothelin signaling from photoreceptors to glia, implicating GO:1990859 in retinal ischemia and gliosis.
Cardiac contractile dysfunction
In adult rabbit ventricular myocytes, endothelin-1 increases phosphatidic acid, and endothelin modulates contractile responses through differential phosphorylation of troponin I sites [3,5]. These findings link GO:1990859 to cardiac contractile regulation and potential heart failure mechanisms [3,5].
Hepatic microcirculation and fibrosis
Endothelin-1 and substance P trigger Ito cell contraction, a process relevant to hepatic microcirculation and liver fibrosis. This places GO:1990859 in the biology of hepatic stellate cell activation.
Vascular tone and ion homeostasis disorders
Endothelin mobilizes intracellular Mg2+ in vascular smooth muscle cells, connecting the pathway to magnesium homeostasis and vascular tone regulation. Inositol lipid-mediated signaling in response to endothelin in the testis further shows the pathway operates in reproductive tissue.
From cellular response to endothelin-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does EDN1 loss abolish retinal vein contraction? | EDN1 knockout endothelial cells. |
| Which EDNRA residues mediate hyperoxia response? | EDNRA point-mutation knock-in. |
| Does troponin I phosphorylation site control endothelin contractility? | TNNI3 phospho-site knock-in cardiomyocytes. |
| Is ACTA2 required for Ito cell contraction? | ACTA2 knockout hepatic stellate cells. |
| Does TRPM7 mediate endothelin-induced Mg2+ mobilization? | TRPM7 overexpression and knockout vascular smooth muscle cells. |
| Which glial genes respond to photoreceptor endothelin? | Tagged knock-in reporter in retinal glia. |
How to Study the cellular response to endothelin Process
| Method | What It Measures | Typical Application |
|---|---|---|
| Live-cell imaging | Cell and vessel contraction | Retinal vein and Ito cell contraction [1,7]. |
| Lipid radiolabeling | Inositol lipid turnover | Endothelin signaling in testis. |
| Phosphatidic acid quantification | Phospholipid second messenger levels | Ventricular myocytes. |
| Fluorescent ion imaging | Intracellular Mg2+ mobilization | Vascular smooth muscle cells. |
| Phospho-immunoblotting | Troponin I phosphorylation | Cardiomyocyte contractile response. |
| Transcriptomics | Gene expression changes | Retinal disease and injury response. |
| Receptor binding assays | Endothelin receptor activation | Retinal circulatory response. |
Live-cell imaging of contraction
Contraction of retinal veins and Ito cells in response to endothelin can be measured by live-cell imaging, as demonstrated in endothelial and hepatic stellate cell studies [1,7]. This method directly reports the contractile output of GO:1990859.
Lipid signaling assays
Inositol lipid turnover and phosphatidic acid production are measured by radiolabeling and lipid extraction, as shown in testis and ventricular myocyte studies [2,3]. These assays quantify the lipid second-messenger arm of the endothelin response.
Ion mobilization measurements
Intracellular Mg2+ mobilization in vascular smooth muscle cells is measured with ion-sensitive fluorescent dyes, providing a readout of the ion homeostasis branch of GO:1990859.
Phosphorylation and gene expression profiling
Troponin I phosphorylation sites are analyzed by phospho-specific immunoblotting, and the genomic response to retinal injury is profiled by transcriptomics to capture gene expression changes in the endothelin response [5,6].
How CRISPR Can Be Used to Study GO:1990859 cellular response to endothelin
Knockout
CRISPR knockout of EDN1, EDNRA or ACTA2 in endothelial, retinal or hepatic stellate cells can test whether these genes are required for the contractile and signaling outputs of GO:1990859 [1,4,7]. Knockout of TRPM7 can test its role in endothelin-induced Mg2+ mobilization.
Point Mutation
Point mutations in TNNI3 phosphorylation sites can dissect which residues mediate the endothelin-modulated contractile response in cardiomyocytes. Point mutations in EDNRA can identify receptor residues required for retinal hyperoxia responses.
Knock-in
Tagged knock-in of glial markers such as GFAP or RLBP1 can label cells responding to photoreceptor-derived endothelin in retinal injury models. Knock-in of fluorescent reporters into EDN1 can track ligand production and secretion.
Overexpression
Overexpression of EDN1 or EDNRA can amplify the cellular response to endothelin and reveal downstream lipid and ion signaling events in vascular smooth muscle and cardiac cells [3,4,8]. Overexpression of TRPM7 can test sufficiency for Mg2+ mobilization.
How EDITGENE Supports cellular response to endothelin Research
Researchers studying cellular response to endothelin-related genes often need to determine whether a candidate gene is causally involved in the response or merely correlated with it. EDITGENE provides CRISPR-engineered cell models that enable precise, reproducible tests of gene function in the endothelin pathway.
Contact EDITGENE today to design your custom CRISPR model for cellular response to endothelin research.
Frequently Asked Questions About cellular response to endothelin
What is GO:1990859 cellular response to endothelin?
GO:1990859 is a Gene Ontology biological process term describing any change in a cell's state or activity, such as movement, secretion, enzyme production or gene expression, that results from an endothelin stimulus [1,4].
What are the endothelin peptides?
Endothelin-1, endothelin-2 and endothelin-3 are three secretory vasoconstrictive peptides that trigger the cellular response to endothelin [1,4].
What genes are involved in cellular response to endothelin?
Key genes include EDN1, EDN2, EDN3, EDNRA, EDNRB, TNNI3, ACTA2, TRPM7 and others experimentally linked to the pathway [1,3,4,5,7,8].
How does endothelin cause vasoconstriction?
Endothelin-1 acts via endothelin receptors to modulate retinal circulatory responses and triggers endothelial contraction of retinal veins [1,4].
What signaling pathways are activated by endothelin?
Endothelin activates inositol lipid-mediated signaling and increases phosphatidic acid, and it mobilizes intracellular Mg2+ in vascular smooth muscle cells [2,3,8].
Is endothelin involved in retinal disease?
Yes, endothelin signaling from photoreceptors to glia is part of the genomic response to retinal disease and injury.
How is endothelin linked to cardiac contraction?
Endothelin modulates contractile responses through differential phosphorylation of troponin I sites in cardiomyocytes.
What cell types respond to endothelin?
Vascular smooth muscle cells, retinal veins, cardiomyocytes, hepatic Ito cells, photoreceptors and glia all show cellular responses to endothelin [1,3,5,6,7,8].
What methods study the cellular response to endothelin?
Live-cell imaging, lipid radiolabeling, fluorescent ion imaging, phospho-immunoblotting and transcriptomics are commonly used [1,2,3,5,6,8].
How can CRISPR help study GO:1990859?
CRISPR knockout, point mutation, knock-in and overexpression models can test causal roles of endothelin pathway genes in disease-relevant cells [1,4,5,7,8].
Conclusion
GO:1990859 cellular response to endothelin is a biologically_process term that unifies the diverse cellular outputs triggered by endothelin-1, -2 and -3, including contraction, lipid signaling, ion mobilization and gene expression [1,2,3,4,5,6,7,8]. Its relevance spans retinal, cardiac, hepatic and vascular biology, making it a rich target for mechanistic and therapeutic research. CRISPR-engineered cell models provide a precise way to dissect the causal genes and pathways underlying this response.
References
- 1. Yu DY et al.. 2023. Endothelial contraction of retinal veins.. Exp Eye Res 228:109386 PMID: 36657697
- 2. Rudge SA et al.. 1995. Inositol lipid-mediated signalling in response to endothelin and ATP in the mammalian testis.. Mol Cell Biochem 149-150:161-74 PMID: 8569725
- 3. Ye H et al.. 1994. Phosphatidic acid increases in response to noradrenaline and endothelin-1 in adult rabbit ventricular myocytes.. Cardiovasc Res 28(12):1828-34 PMID: 7867036
- 4. Takagi C et al.. 1996. Endothelin-1 action via endothelin receptors is a primary mechanism modulating retinal circulatory response to hyperoxia.. Invest Ophthalmol Vis Sci 37(10):2099-109 PMID: 8814149
- 5. Westfall MV et al.. 2005. Differential contribution of troponin I phosphorylation sites to the endothelin-modulated contractile response.. J Biol Chem 280(50):41324-31 PMID: 16236710
- 6. Rattner A et al.. 2005. The genomic response to retinal disease and injury: evidence for endothelin signaling from photoreceptors to glia.. J Neurosci 25(18):4540-9 PMID: 15872101
- 7. Sakamoto M et al.. 1993. Ito cell contraction in response to endothelin-1 and substance P.. Hepatology 18(4):978-83 PMID: 7691708
- 8. Okada K et al.. 1992. Cellular mechanisms of vasopressin and endothelin to mobilize [Mg2+]i in vascular smooth muscle cells.. Am J Physiol 263(4 Pt 1):C873-8 PMID: 1415672
