GO:0019722 calcium-mediated signaling: Mechanism, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0019722 calcium-mediated signaling is defined as any intracellular signal transduction in which the signal is passed on within the cell via calcium ions.
• Calcium signals are decoded by sensors such as calmodulin, troponin C, and EF-hand proteins, which convert transient Ca2+ elevations into specific cellular responses.
• Calcium-mediated signaling controls contraction, secretion, gene expression, metabolism, and cell death, and its dysregulation contributes to cardiac hypertrophy, pulmonary hypertension, cancer, and neurological disorders [1,4,6,7,8].
• Key entry routes include voltage-gated calcium channels, ligand-gated channels such as nicotinic acetylcholine receptors, store-operated calcium entry, and mechanosensitive channels like Piezo1 [4,6,7].
• Sphingolipid metabolites and death receptors such as CD95 can also trigger calcium-mediated signaling, linking lipid signaling and apoptosis to calcium flux [3,5].
• CRISPR knockout, point-mutation, knock-in, and overexpression models enable causal testing of calcium signaling genes in disease-relevant cell types [4,8].
Description
Calcium-mediated signaling (GO:0019722) is a biological process in which intracellular signal transduction is carried by calcium ions (Ca2+). In this process, a stimulus triggers a rise in cytosolic Ca2+ concentration, and the calcium signal is then decoded by calcium-binding proteins that alter enzyme activity, gene expression, secretion, contraction, or cell fate. Because Ca2+ cannot be metabolized like a conventional second messenger, cells regulate it through pumps, exchangers, buffers, and compartmentalized release and uptake systems. This makes calcium-mediated signaling one of the most versatile and rapidly reversible signaling mechanisms in eukaryotes. The process is central to physiology and disease. In the heart, Piezo1-mediated mechanotransduction impairs calcium homeostasis and activates calpain/calcineurin signaling to promote cardiac hypertrophy. In the vasculature, calcium channel-mediated signaling is a therapeutic target in pulmonary hypertension. In the nervous system, nicotinic acetylcholine receptor-mediated calcium signaling modulates neuronal function. In cancer, calcium signaling can stimulate epigenetic reprogramming and stemness, as shown for SIRT4 in pancreatic cancer. In plants, calcium signaling mediates cold stress responses, illustrating its evolutionary conservation. Sphingolipid-mediated calcium signaling and CD95-mediated calcium signaling further show how lipids and death receptors intersect with Ca2+ pathways [3,5]. For researchers, GO:0019722 provides a framework to study how Ca2+ signals are generated, decoded, and terminated, and how their perturbation contributes to disease.
calcium-mediated signaling At A Glance
| GO ID | GO:0019722 |
|---|---|
| GO term | calcium-mediated signaling |
| Ontology | biological_process |
| Synonym | calcium ion signaling; calcium-mediated signalling; calcium signaling; calcium signalling |
| Definition | Any intracellular signal transduction in which the signal is passed on within the cell via calcium ions. |
| Major function | Relays intracellular signals through transient Ca2+ elevations decoded by calcium-binding proteins. |
| Key sensors | Calmodulin, troponin C, and other EF-hand calcium-binding proteins. |
| Representative triggers | Voltage-gated channels, ligand-gated channels, store-operated entry, mechanosensitive Piezo1, sphingolipids, and CD95 [3,4,5,6,7]. |
| Disease relevance | Cardiac hypertrophy, pulmonary hypertension, cancer stemness, and neurological disorders [4,6,7,8]. |
What Is GO:0019722?
In our own words, calcium-mediated signaling (GO:0019722) is any intracellular signal transduction pathway in which calcium ions act as the messenger that carries information from one intracellular component to another. The signal is passed on within the cell via calcium ions, typically through transient increases in cytosolic free Ca2+ that are detected by calcium-binding sensor proteins. This definition emphasizes the intracellular relay function of Ca2+ rather than the mere presence of calcium, and it encompasses signaling downstream of channels, pumps, exchangers, and calcium-mobilizing receptors.
Why Is calcium-mediated signaling Important in Cell Biology?
Calcium-mediated signaling is important because it converts diverse external and internal stimuli into precise cellular responses, including contraction, secretion, metabolism, gene expression, and cell death. Its dysregulation is causally linked to major human diseases: Piezo1-mediated calcium imbalance drives cardiac hypertrophy through calpain/calcineurin signaling; calcium channel-mediated signaling is a pharmacological target in pulmonary hypertension; nicotinic acetylcholine receptor-mediated calcium signaling affects nervous system function; and calcium signaling can promote pancreatic cancer stemness via histone lactylation and epigenetic reprogramming. Because Ca2+ signals are fast, compartmentalized, and reversible, they are also attractive for experimental manipulation with CRISPR-based models [1,4,8].
• Controls excitation-contraction coupling in cardiac and skeletal muscle through calcium-dependent sensors.
• Regulates secretion and neurotransmitter release in the nervous system via nicotinic acetylcholine receptor-mediated calcium signaling.
• Drives pathological cardiac hypertrophy when Piezo1-mediated mechanotransduction impairs calcium homeostasis and activates calpain/calcineurin.
• Contributes to pulmonary hypertension through calcium channel-mediated signaling, offering pharmacological targets.
• Promotes cancer stemness and epigenetic reprogramming in pancreatic cancer via calcium signaling and SIRT4.
• Mediates cold stress responses in plants, demonstrating evolutionary conservation.
• Intersects with sphingolipid signaling and death receptor pathways such as CD95-mediated calcium signaling [3,5].
• Provides druggable nodes (channels, pumps, exchangers, sensors) for cardiovascular and oncological therapy [1,4,6].
• Enables rapid, reversible signal transduction that can be studied with live-cell calcium imaging and genetic perturbation.
• Serves as a paradigm for second-messenger signaling in cell biology and pharmacology.
What Happens During calcium-mediated signaling?
Initiation: calcium entry or release
In simple terms: A trigger opens a door or releases stored calcium, letting calcium ions flow into the cytosol.
Calcium-mediated signaling begins when a stimulus increases cytosolic Ca2+ concentration. This can occur through entry across the plasma membrane via voltage-gated calcium channels, ligand-gated channels such as nicotinic acetylcholine receptors, store-operated calcium entry, or mechanosensitive channels like Piezo1 [4,6,7]. Alternatively, Ca2+ can be released from intracellular stores such as the endoplasmic reticulum or sarcoplasmic reticulum. In the heart, Piezo1-mediated mechanotransduction impairs calcium homeostasis, contributing to hypertrophy. In pulmonary hypertension, calcium channel-mediated signaling is a central pathological mechanism. In the nervous system, nicotinic acetylcholine receptor-mediated calcium signaling provides a fast entry route.
Decoding: calcium sensor activation
In simple terms: Calcium ions bind to sensor proteins, which change shape and switch on downstream enzymes.
Once cytosolic Ca2+ rises, calcium-binding proteins such as calmodulin and troponin C bind Ca2+ and undergo conformational changes that allow them to interact with target enzymes and channels. These sensors decode the amplitude, duration, and spatial pattern of the Ca2+ signal into specific outputs. For example, calmodulin activates calcineurin and Ca2+/calmodulin-dependent kinases, while troponin C regulates muscle contraction. In disease contexts, impaired calcium homeostasis can activate calpain/calcineurin signaling in cardiac hypertrophy. Sphingolipid-mediated calcium signaling can also feed into these decoding pathways.
Amplification and downstream effector activation
In simple terms: The calcium signal is amplified and passed to effector proteins that change cell behavior.
Calcium sensors activate downstream effectors including kinases, phosphatases, proteases, and transcription factors. In cardiac hypertrophy, Piezo1-mediated calcium imbalance activates calpain/calcineurin signaling, which drives pathological gene expression. In pancreatic cancer, calcium signaling stimulates SIRT4-dependent histone lactylation and epigenetic reprogramming, promoting stemness. CD95-mediated calcium signaling links death receptor activation to calcium-dependent apoptotic machinery. These examples show that calcium-mediated signaling can amplify initial Ca2+ elevations into durable cellular changes [1,4,5,8].
Termination and homeostasis
In simple terms: Pumps and exchangers remove calcium to switch the signal off and reset the system.
Termination of calcium-mediated signaling requires removal of cytosolic Ca2+ by pumps and exchangers and buffering by calcium-binding proteins. This restoration of low resting Ca2+ is essential for signal specificity and for preventing toxicity. In disease, failure to maintain calcium homeostasis can sustain pathological signaling, as seen in Piezo1-driven cardiac hypertrophy and in pulmonary hypertension [4,6]. Sphingolipid-mediated calcium signaling can also contribute to pathological effects when termination is impaired.
Integration with other signaling pathways
In simple terms: Calcium signals talk to other pathways, allowing the cell to combine multiple inputs.
Calcium-mediated signaling is integrated with lipid, death receptor, and epigenetic pathways. Sphingolipid metabolites can trigger calcium signaling with pathological consequences. CD95 engagement initiates calcium signaling that intersects with apoptosis. In pancreatic cancer, calcium signaling stimulates histone lactylation and epigenetic reprogramming through SIRT4. In plants, calcium signaling mediates cold stress responses, showing integration with environmental stress pathways. This crosstalk allows calcium to serve as a hub for diverse cellular decisions.
Key Genes Involved in GO:0019722 calcium-mediated signaling
The following genes and proteins are representative components or regulators of calcium-mediated signaling (GO:0019722), based on the cited literature.
| Gene | Major Role | Research Relevance |
|---|---|---|
| PIEZO1 | Mechanosensitive calcium channel | Mediates cardiac hypertrophy via calcium imbalance and calpain/calcineurin signaling |
| CALM1 | Calcium sensor calmodulin | Decodes Ca2+ signals to activate downstream effectors |
| TNNC1 | Troponin C calcium sensor | Regulates muscle contraction in response to Ca2+ |
| CD95 (FAS) | Death receptor triggering calcium signaling | Links apoptosis to calcium flux |
| CHRNA7 | Nicotinic acetylcholine receptor subunit | Mediates neuronal calcium signaling |
| SIRT4 | Mitochondrial sirtuin | Promotes pancreatic cancer stemness via calcium signaling and histone lactylation |
| CACNA1C | Voltage-gated calcium channel subunit | Contributes to calcium channel-mediated signaling in pulmonary hypertension |
| CACNA1D | Voltage-gated calcium channel subunit | Contributes to calcium channel-mediated signaling in pulmonary hypertension |
| ITPR1 | IP3 receptor calcium release channel | Releases Ca2+ from intracellular stores |
| RYR2 | Ryanodine receptor calcium release channel | Releases Ca2+ from sarcoplasmic reticulum in muscle |
| ATP2B1 | Plasma membrane calcium pump | Terminates calcium signals by extruding Ca2+ |
| SLC8A1 | Na+/Ca2+ exchanger | Regulates cytosolic Ca2+ homeostasis |
| CALM2 | Calcium sensor calmodulin | Decodes Ca2+ signals in multiple cell types |
| CALM3 | Calcium sensor calmodulin | Decodes Ca2+ signals in multiple cell types |
| PPP3CA | Calcineurin catalytic subunit | Activated by calcium/calmodulin in hypertrophy |
| CAPN1 | Calpain protease | Activated by calcium imbalance in cardiac hypertrophy |
| SPHK1 | Sphingosine kinase | Contributes to sphingolipid-mediated calcium signaling |
How Is calcium-mediated signaling Regulated?
Calcium-mediated signaling is regulated at multiple levels. Cytosolic Ca2+ concentration is controlled by channels, pumps, exchangers, and buffers that determine the amplitude, duration, and localization of the signal. Calcium-binding proteins such as calmodulin and troponin C provide sensor specificity. In disease, Piezo1-mediated mechanotransduction can impair calcium homeostasis and activate calpain/calcineurin signaling, illustrating how mechanical inputs regulate the pathway. Sphingolipid metabolites regulate calcium signaling and can produce pathological effects. CD95 engagement provides a receptor-level input into calcium signaling. In pancreatic cancer, calcium signaling stimulates SIRT4-dependent histone lactylation and epigenetic reprogramming, showing that calcium signals can feed back into chromatin regulation. In plants, cold stress regulates calcium signaling as part of environmental adaptation.
calcium-mediated signaling and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| PIEZO1 | Cardiac hypertrophy | Knockout or point-mutation in cardiomyocytes followed by mechanical stretch |
| CACNA1C | Pulmonary hypertension | Knockdown or overexpression in pulmonary artery smooth muscle cells |
| SIRT4 | Pancreatic cancer stemness | Knockout and overexpression in pancreatic cancer cell lines |
| CD95 (FAS) | Apoptosis and calcium signaling | Knockout in Jurkat or other apoptosis-competent cells |
| CHRNA7 | Neurological function | Knockout in neuronal cell models |
Cardiac hypertrophy and heart failure
Piezo1-mediated mechanotransduction promotes cardiac hypertrophy by impairing calcium homeostasis and activating calpain/calcineurin signaling. This links mechanical stress to pathological cardiac remodeling through calcium-mediated signaling. Experimental models can test whether Piezo1 or downstream calpain/calcineurin components are required for hypertrophy.
Pulmonary hypertension
Calcium channel-mediated signaling is a central mechanism in pulmonary hypertension and a target for present and future pharmacological therapies. Voltage-gated calcium channels and downstream calcium sensors contribute to vasoconstriction and remodeling. This makes calcium-mediated signaling a therapeutic axis in pulmonary vascular disease.
Cancer stemness and epigenetic reprogramming
In pancreatic cancer, calcium signaling stimulates SIRT4-dependent histone lactylation and epigenetic reprogramming, promoting cancer stemness. This connects calcium-mediated signaling to metabolic and epigenetic changes that sustain tumor cell plasticity. Targeting calcium signaling or SIRT4 may reduce stemness in pancreatic cancer models.
Neurological and apoptotic signaling
Nicotinic acetylcholine receptor-mediated calcium signaling modulates nervous system function, and CD95-mediated calcium signaling links death receptor activation to apoptosis [5,7]. Sphingolipid-mediated calcium signaling also has pathological effects in multiple tissues. These pathways illustrate how calcium-mediated signaling contributes to neuronal physiology and cell death decisions [3,5,7].
From calcium-mediated signaling-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Is PIEZO1 required for cardiac hypertrophy? | PIEZO1 knockout or point-mutation cardiomyocytes under mechanical stretch |
| Does SIRT4 mediate calcium-induced stemness? | SIRT4 knockout and overexpression in pancreatic cancer cells |
| Which calcium channel mediates pulmonary hypertension? | Knockdown or knockout of CACNA1C in pulmonary artery smooth muscle cells |
| How does CD95 trigger calcium signaling? | CD95 knockout or tagged knock-in in apoptosis-competent cells |
| What is the role of nicotinic receptors in neuronal calcium signaling? | CHRNA7 knockout or knock-in in neuronal cells |
| How do sphingolipids regulate calcium signaling? | SPHK1 knockout or overexpression in relevant cell types |
How to Study the calcium-mediated signaling Process
| Method | What It Measures | Typical Application |
|---|---|---|
| Live-cell calcium imaging | Cytosolic Ca2+ dynamics | Testing channel or receptor function [1,7] |
| CRISPR knockout | Loss-of-function effects | Testing requirement of PIEZO1 or SIRT4 [4,8] |
| CRISPR point mutation | Specific residue function | Dissecting calcium sensor or channel domains |
| CRISPR knock-in | Tagged or reporter alleles | Tracking protein localization during calcium signaling |
| Overexpression | Gain-of-function effects | Testing SIRT4 or channel subunits [6,8] |
| Proteomics | Protein abundance and modifications | Detecting calpain/calcineurin activation |
| RNA sequencing | Transcriptome changes | Identifying downstream gene networks [2,8] |
| Chromatin profiling | Epigenetic modifications | Linking calcium signaling to histone lactylation |
Live-cell calcium imaging
Live-cell calcium imaging with fluorescent indicators measures the amplitude, duration, and localization of Ca2+ signals in response to stimuli. This method is widely used to confirm that a candidate gene affects calcium-mediated signaling. It can be combined with channel agonists or mechanical stretch to probe specific entry routes [4,6].
Genetic perturbation with CRISPR
CRISPR knockout, point-mutation, knock-in, and overexpression models allow causal testing of genes in calcium-mediated signaling [4,8]. For example, PIEZO1 knockout can test mechanotransduction-dependent calcium entry, and SIRT4 knockout can test calcium-induced stemness. These approaches complement pharmacological tools.
Biochemical and proteomic readouts
Biochemical assays can measure activation of calcium-dependent effectors such as calpain and calcineurin. Proteomics and chromatin profiling can reveal downstream epigenetic changes, such as histone lactylation driven by calcium signaling and SIRT4. These readouts connect calcium signals to functional outcomes [4,8].
Transcriptomic and pathway analysis
RNA sequencing and pathway analysis can identify gene expression changes downstream of calcium-mediated signaling. In plants, cold stress studies use transcriptomics to link calcium signaling to stress responses. Such analyses help define the gene networks controlled by calcium [2,8].
How CRISPR Can Be Used to Study GO:0019722 calcium-mediated signaling
Knockout
CRISPR knockout is used to delete genes involved in calcium-mediated signaling and test their requirement in disease models. For example, PIEZO1 knockout can determine whether mechanosensitive calcium entry is needed for cardiac hypertrophy. SIRT4 knockout can test whether calcium-induced stemness depends on this sirtuin. Knockout of channel subunits can clarify their role in pulmonary hypertension.
Point Mutation
CRISPR point mutation introduces specific amino acid changes to dissect domain functions in calcium sensors, channels, or effectors. This approach can test whether a calcium-binding site or phosphorylation site is required for signaling. It is useful for separating calcium-dependent from calcium-independent functions of a protein.
Knock-in
CRISPR knock-in can add tags, reporters, or disease-relevant mutations to endogenous loci. Tagged knock-in of calcium sensors or channels allows real-time tracking of protein localization during calcium-mediated signaling. Disease-associated knock-in mutations can model how altered calcium signaling contributes to pathology [4,6].
Overexpression
CRISPR overexpression or cDNA overexpression can test gain-of-function effects of calcium signaling genes. Overexpression of SIRT4 or calcium channel subunits can reveal sufficiency for stemness or pathological signaling [6,8]. This complements knockout studies by showing whether increased activity is enough to drive a phenotype [6,8].
How EDITGENE Supports calcium-mediated signaling Research
Researchers studying calcium-mediated signaling-related genes often need to determine whether a candidate gene is causally involved in calcium-dependent phenotypes, such as hypertrophy, stemness, or neuronal signaling. EDITGENE provides CRISPR-based cell model services that enable precise knockout, point mutation, knock-in, and overexpression of calcium signaling genes in disease-relevant cell types.
Contact EDITGENE today to design your custom CRISPR model for calcium-mediated signaling research.
Frequently Asked Questions About calcium-mediated signaling
What is calcium-mediated signaling?
Calcium-mediated signaling (GO:0019722) is any intracellular signal transduction in which the signal is passed on within the cell via calcium ions.
What genes are involved in calcium-mediated signaling?
Key genes include PIEZO1, CALM1, TNNC1, CD95 (FAS), CHRNA7, SIRT4, CACNA1C, ITPR1, RYR2, ATP2B1, and SLC8A1, among others [1,3,4,5,6,7,8].
What is the GO ID for calcium-mediated signaling?
The GO ID is GO:0019722, a biological_process term.
How does calcium-mediated signaling work?
A stimulus raises cytosolic Ca2+, calcium-binding sensors such as calmodulin decode the signal, and downstream effectors alter cell behavior before pumps and exchangers terminate the signal.
What diseases are linked to calcium-mediated signaling?
It is linked to cardiac hypertrophy, pulmonary hypertension, pancreatic cancer stemness, and neurological or apoptotic disorders [4,5,6,7,8].
What is the role of PIEZO1 in calcium-mediated signaling?
PIEZO1 is a mechanosensitive calcium channel that promotes cardiac hypertrophy by impairing calcium homeostasis and activating calpain/calcineurin signaling.
How is calcium-mediated signaling studied?
It is studied with live-cell calcium imaging, CRISPR knockout or knock-in models, proteomics, and transcriptomics [1,4,8].
Can CRISPR be used to study calcium-mediated signaling?
Yes, CRISPR knockout, point mutation, knock-in, and overexpression are used to test causal roles of calcium signaling genes [4,6,8].
What is the difference between calcium signaling and calcium-mediated signaling?
Calcium-mediated signaling is the GO term GO:0019722 describing intracellular signal transduction via calcium ions; calcium signaling is a synonym.
Why is calcium-mediated signaling important in cancer?
In pancreatic cancer, calcium signaling stimulates SIRT4-dependent histone lactylation and epigenetic reprogramming, promoting stemness.
Conclusion
Calcium-mediated signaling (GO:0019722) is a fundamental biological process in which intracellular signals are carried by calcium ions and decoded by calcium-binding proteins. Its roles span muscle contraction, neuronal signaling, secretion, gene expression, and cell death, and its dysregulation contributes to cardiac hypertrophy, pulmonary hypertension, cancer, and neurological disorders [4,5,6,7,8]. CRISPR-based cell models provide powerful tools to test causal roles of calcium signaling genes and to identify new therapeutic targets [4,6,8].
References
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- 2. Yuan P et al.. 2018. Calcium Signaling-Mediated Plant Response to Cold Stress.. Int J Mol Sci 19(12) PMID: 30563125
- 3. Pulli I et al.. 2018. Sphingolipid-mediated calcium signaling and its pathological effects.. Biochim Biophys Acta Mol Cell Res 1865(11 Pt B):1668-1677 PMID: 29704533
- 4. Zhang Y et al.. 2021. Piezo1-Mediated Mechanotransduction Promotes Cardiac Hypertrophy by Impairing Calcium Homeostasis to Activate Calpain/Calcineurin Signaling.. Hypertension 78(3):647-660 PMID: 34333987
- 5. Hammadi M et al.. 2017. CD95-Mediated Calcium Signaling.. Methods Mol Biol 1557:79-93 PMID: 28078584
- 6. Acuña B et al.. 2023. [Pulmonary hypertension: calcium channel-mediated signaling, present and future pharmacological targets].. Rev Med Chil 151(6):753-763 PMID: 38801384
- 7. Shen JX et al.. 2009. Nicotinic acetylcholine receptor-mediated calcium signaling in the nervous system.. Acta Pharmacol Sin 30(6):673-80 PMID: 19448647
- 8. Lv M et al.. 2025. SIRT4 Promotes Pancreatic Cancer Stemness by Enhancing Histone Lactylation and Epigenetic Reprogramming Stimulated by Calcium Signaling.. Adv Sci (Weinh) 12(20):e2412553 PMID: 40298941
