GO:1905145 cellular response to acetylcholine: Signaling Pathway, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:1905145 (cellular response to acetylcholine) describes any process by which a cell changes its state or activity in response to acetylcholine, including movement, secretion, enzyme production, and gene expression.
• Acetylcholine acts through muscarinic and nicotinic receptors to trigger two kinetically distinct responses in mammalian cortical neurons.
• Cholinergic signaling via the vagus nerve suppresses systemic inflammation through the alpha7 nicotinic acetylcholine receptor.
• Acetylcholine released by tuft cells into the gut lumen promotes anti-helminth immunity.
• Cholinergic regulation of osteocytes modulates bone mechanobiology and adaptation.
• Sleep disturbance can aberrantly activate vagus circuitry and impair intestinal stem cell function, linking cholinergic signaling to tissue homeostasis.
Description
GO:1905145, cellular response to acetylcholine, is a biological process term in the Gene Ontology that captures all cellular changes triggered by acetylcholine, a major neurotransmitter and paracrine signaling molecule. Acetylcholine acts on both nicotinic and muscarinic receptors, and the resulting cellular responses range from rapid ion flux to long-term changes in gene expression and secretion. This term is essential for researchers studying neuroimmunology, gut physiology, bone biology, and neuronal excitability because it provides a standardized way to annotate and compare acetylcholine-driven cellular behaviors across cell types. The vagus nerve releases acetylcholine to attenuate systemic inflammation, a process that depends on cellular responses in immune cells. In the gut, tuft cell-derived acetylcholine acts on neighboring cells to promote anti-helminth immunity, illustrating how this GO term applies to non-neuronal sources of acetylcholine. In bone, osteocyte mechanobiology is regulated by cholinergic signals, showing that cellular response to acetylcholine is not limited to the nervous system. Sleep disturbance can trigger aberrant activation of vagus circuitry and induce intestinal stem cell dysfunction, further highlighting the broad physiological relevance of this process.
cellular response to acetylcholine At A Glance
| GO ID | GO:1905145 |
|---|---|
| GO term | cellular response to acetylcholine |
| Ontology | biological_process |
| Synonym | none |
| Major function | Mediates cellular changes in response to acetylcholine, including movement, secretion, enzyme production, and gene expression |
| Related receptors | Muscarinic and nicotinic acetylcholine receptors |
| Key physiological contexts | Neuroimmunology, gut immunity, bone mechanobiology, neuronal excitability |
| Disease relevance | Inflammation, atopic dermatitis, intestinal stem cell dysfunction |
What Is GO:1905145?
According to the Gene Ontology, GO:1905145 (cellular response to acetylcholine) is defined as 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 acetylcholine stimulus. This definition encompasses all intracellular signaling events, transcriptional changes, and functional outputs that occur when a cell detects acetylcholine, whether the acetylcholine comes from neurons, immune cells, or epithelial cells.
Why Is cellular response to acetylcholine Important in Cell Biology?
Understanding cellular response to acetylcholine is critical because cholinergic signaling controls fundamental processes such as inflammation, immunity, bone remodeling, and neuronal excitability, and its dysregulation contributes to diseases ranging from inflammatory disorders to atopic dermatitis and intestinal stem cell dysfunction.
• Acetylcholine suppresses systemic inflammation through the vagus nerve and alpha7 nicotinic receptors, making this process a target for anti-inflammatory therapies.
• Cholinergic signaling in the gut promotes anti-helminth immunity via tuft cell-derived acetylcholine.
• Osteocyte mechanobiology is regulated by cholinergic signals, linking this process to bone adaptation.
• Sleep disturbance can aberrantly activate vagus circuitry and impair intestinal stem cells, showing the importance of cholinergic homeostasis.
• Atopic dermatitis involves cholinergic dysregulation, highlighting the clinical relevance of this GO term.
• Muscarinic responses in cortical neurons are fundamental to neuronal excitability and information processing.
• TRPM4 and TRPM5 channels modulate cellular responses to bitter compounds in gastric parietal cells, intersecting with cholinergic signaling.
• This process is conserved across multiple cell types, making it a broad research target.
What Happens During cellular response to acetylcholine?
Acetylcholine detection by muscarinic and nicotinic receptors
In simple terms: The cell first senses acetylcholine through specialized receptor proteins on its surface.
Acetylcholine binds to two major classes of receptors: muscarinic acetylcholine receptors (mAChRs), which are G protein-coupled receptors, and nicotinic acetylcholine receptors (nAChRs), which are ligand-gated ion channels. In mammalian cortical neurons, muscarinic responses can be classified into two types based on their kinetics and underlying mechanisms. The alpha7 nicotinic receptor is a key mediator of anti-inflammatory responses to vagus nerve stimulation. This receptor diversity allows a single molecule, acetylcholine, to elicit distinct cellular outcomes depending on cell type and context.
Intracellular signaling cascades
In simple terms: Once acetylcholine is detected, the cell activates internal signaling pathways that relay the message.
Activation of muscarinic receptors triggers G protein-mediated signaling, leading to changes in second messenger levels and ion channel activity. Nicotinic receptor activation causes rapid ion flux, particularly sodium and calcium, which can depolarize the cell and activate downstream kinases. In immune cells, alpha7 nicotinic receptor signaling suppresses pro-inflammatory cytokine production through the JAK2-STAT3 pathway and NF-kB inhibition. These signaling events represent the core of the cellular response to acetylcholine.
Functional outputs: secretion, movement, and gene expression
In simple terms: The cell then changes its behavior, such as releasing substances, moving, or altering which genes are active.
Downstream of receptor activation, cells can undergo changes in secretion, movement, enzyme production, and gene expression. For example, tuft cells release acetylcholine into the gut lumen to promote anti-helminth immunity, which involves changes in secretion and immune cell recruitment. In osteocytes, cholinergic signaling modulates mechanobiology, affecting bone adaptation through changes in gene expression and matrix production. In gastric parietal cells, TRPM4 and TRPM5 channels modulate the cellular response to bitter-tasting food constituents, which may intersect with cholinergic pathways.
Integration with systemic physiology
In simple terms: The cellular response to acetylcholine is not isolated; it connects to whole-body functions like inflammation control and sleep.
Vagus nerve stimulation attenuates the systemic inflammatory response to endotoxin, demonstrating that cellular responses to acetylcholine in immune cells have organism-level effects. Sleep disturbance triggers aberrant activation of vagus circuitry and induces intestinal stem cell dysfunction, showing that cholinergic signaling integrates with circadian and sleep physiology. Brain control of humoral immune responses is amenable to behavioural modulation, further linking acetylcholine responses to higher-order functions.
Key Genes Involved in GO:1905145 cellular response to acetylcholine
The following genes and proteins are central to cellular response to acetylcholine, based on published literature.
| Gene | Major Role | Research Relevance |
|---|---|---|
| CHRNA7 | Alpha7 nicotinic acetylcholine receptor; mediates anti-inflammatory effects of vagus nerve stimulation | Target for inflammatory diseases and neuroimmunology |
| CHRM1 | Muscarinic acetylcholine receptor M1; mediates slow excitatory responses in cortical neurons | Neuronal excitability and synaptic plasticity |
| CHRM2 | Muscarinic acetylcholine receptor M2; mediates inhibitory responses | Neuronal signaling and heart rate regulation |
| CHAT | Choline acetyltransferase; synthesizes acetylcholine | Source of acetylcholine in neurons and tuft cells |
| SLC5A7 | Choline transporter; supplies choline for acetylcholine synthesis | Regulation of acetylcholine availability |
| ACHE | Acetylcholinesterase; degrades acetylcholine | Termination of cholinergic signaling |
| TRPM4 | Sodium-permeable ion channel; modulates cellular response to bitter compounds in gastric parietal cells | Gastric physiology and taste signaling |
| TRPM5 | Sodium-permeable ion channel; functional in gastric parietal cells | Gastric physiology and taste signaling |
| JAK2 | Janus kinase 2; downstream of alpha7 nAChR in anti-inflammatory signaling | Inflammation and immune regulation |
| STAT3 | Signal transducer and activator of transcription 3; mediates anti-inflammatory gene expression | Inflammation and immune regulation |
| NFKB1 | Nuclear factor kappa B subunit 1; inhibited by alpha7 nAChR signaling | Inflammation and immune regulation |
| LYN | Tyrosine-protein kinase Lyn; may modulate nicotinic receptor signaling | Immune cell signaling |
| PIK3CA | Phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit alpha; downstream of muscarinic receptors | Cell survival and signaling |
| MAPK1 | Mitogen-activated protein kinase 1; downstream of cholinergic receptors | Cell proliferation and differentiation |
| CREB1 | cAMP response element-binding protein 1; mediates gene expression changes | Neuronal plasticity and gene regulation |
| SLC17A9 | Vesicular nucleotide transporter; may package acetylcholine in tuft cells | Gut immunity and secretion |
| ILC2 | Group 2 innate lymphoid cells; respond to tuft cell acetylcholine | Anti-helminth immunity |
How Is cellular response to acetylcholine Regulated?
Cellular response to acetylcholine is tightly regulated at multiple levels. Acetylcholine synthesis by choline acetyltransferase (CHAT) and degradation by acetylcholinesterase (ACHE) control the availability of the stimulus. Receptor desensitization and internalization modulate sensitivity to sustained acetylcholine exposure. In immune cells, alpha7 nicotinic receptor signaling is regulated by JAK2-STAT3 and NF-kB pathways, which provide feedback inhibition. Sleep and circadian rhythms can influence vagus nerve activity, thereby altering cholinergic tone and cellular responses. Additionally, TRPM4 and TRPM5 channels may modulate the cellular response to acetylcholine in gastric parietal cells by affecting membrane potential and calcium signaling.
cellular response to acetylcholine and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| CHRNA7 | Inflammation and sepsis | Knockout mice or macrophage cell lines with CHRNA7 KO |
| CHRM1 | Neuronal excitability disorders | Primary cortical neuron cultures with CHRM1 point mutations |
| CHRM2 | Cardiac and neuronal disorders | Knock-in mice expressing mutant CHRM2 |
| CHAT | Gut immunity and helminth infection | Tuft cell-specific CHAT knockout mice |
| TRPM4 | Gastric dysfunction | Gastric parietal cell lines with TRPM4 overexpression |
Inflammatory and immune disorders
Vagus nerve stimulation attenuates the systemic inflammatory response to endotoxin through alpha7 nicotinic acetylcholine receptor signaling, making cellular response to acetylcholine a key target for treating inflammatory diseases such as sepsis and cytokine storms. Brain control of humoral immune responses is amenable to behavioural modulation, suggesting that cholinergic circuits can be harnessed for immunotherapy.
Atopic dermatitis
Atopic dermatitis is a chronic inflammatory skin disease that involves cholinergic dysregulation, and cellular responses to acetylcholine in skin cells may contribute to itch and inflammation.
Intestinal stem cell dysfunction
Sleep disturbance triggers aberrant activation of vagus circuitry and induces intestinal stem cell dysfunction, linking cholinergic signaling to intestinal homeostasis and regeneration.
Bone disorders
Cholinergic regulation of osteocyte mechanobiology provides a paradigm for bone adaptation, and dysregulation of this process may contribute to osteoporosis and other bone diseases.
From cellular response to acetylcholine-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does CHRNA7 mediate anti-inflammatory effects of acetylcholine? | CHRNA7 knockout mice or macrophages |
| What are the kinetics of muscarinic responses in cortical neurons? | Primary cortical neurons with CHRM1/CHRM2 point mutations |
| How does tuft cell acetylcholine promote anti-helminth immunity? | Intestinal organoids with CHAT knockout |
| Does TRPM4 modulate gastric parietal cell response to bitter compounds? | TRPM4 overexpression in gastric parietal cell lines |
| How does sleep disturbance affect vagus circuitry and intestinal stem cells? | Vagus-specific knockout or optogenetic mouse models |
| Does cholinergic signaling regulate osteocyte mechanobiology? | Osteocyte-specific CHRNA7 knockout mice |
How to Study the cellular response to acetylcholine Process
| Method | What It Measures | Typical Application |
|---|---|---|
| Calcium imaging | Intracellular calcium flux | Neuronal and immune cell activation by acetylcholine |
| Patch-clamp electrophysiology | Ion channel activity and membrane potential | Nicotinic receptor function in neurons |
| RNA-seq | Global gene expression changes | Transcriptional response to acetylcholine |
| Phosphoproteomics | Protein phosphorylation events | Signaling pathways downstream of cholinergic receptors |
| CRISPR knockout | Loss-of-function phenotypes | Testing necessity of CHRNA7 in anti-inflammatory responses |
| CRISPR knock-in | Precise mutation or tag insertion | Studying point mutations in CHRM1 |
| Organoid culture | Tissue-like cellular responses | Gut immunity and tuft cell function |
| Optogenetics | Light-controlled activation of cholinergic circuits | Vagus nerve stimulation and behavior |
Calcium imaging and electrophysiology
Calcium imaging and patch-clamp electrophysiology are used to measure immediate cellular responses to acetylcholine, such as ion flux and membrane depolarization, in neurons and other excitable cells.
Transcriptomics and RNA-seq
RNA sequencing can identify gene expression changes downstream of acetylcholine receptor activation, revealing the transcriptional program of cellular response to acetylcholine.
Proteomics and phosphoproteomics
Mass spectrometry-based proteomics can quantify changes in protein abundance and phosphorylation following acetylcholine stimulation, uncovering signaling nodes such as JAK2-STAT3.
Genetic knockout and knock-in models
CRISPR-Cas9 knockout and knock-in models are essential to establish causality between specific genes (e.g., CHRNA7, CHRM1) and cellular responses to acetylcholine.
How CRISPR Can Be Used to Study GO:1905145 cellular response to acetylcholine
Knockout
CRISPR knockout of genes such as CHRNA7 or CHAT can abolish cellular responses to acetylcholine, allowing researchers to test whether a specific receptor or enzyme is required for downstream effects like anti-inflammatory signaling or gut immunity.
Point Mutation
Point mutations in muscarinic receptor genes (e.g., CHRM1) can be introduced to dissect the structural determinants of receptor activation and desensitization, as well as to model disease-associated variants.
Knock-in
Knock-in of reporter tags or disease-relevant mutations into endogenous loci (e.g., CHRNA7) enables real-time tracking of receptor expression and function in response to acetylcholine.
Overexpression
Overexpression of TRPM4 or TRPM5 in gastric parietal cells can enhance or perturb the cellular response to bitter compounds and acetylcholine, helping to define their contribution to gastric physiology.
How EDITGENE Supports cellular response to acetylcholine Research
Researchers studying cellular response to acetylcholine-related genes often need to determine whether a candidate gene is causally involved in cholinergic signaling, and CRISPR-based models provide a rigorous way to test this.
Contact EDITGENE today to design your custom CRISPR model for cellular response to acetylcholine research.
Frequently Asked Questions About cellular response to acetylcholine
What is GO:1905145 cellular response to acetylcholine?
GO:1905145 is a Gene Ontology biological process term defined as any process that results in a change in state or activity of a cell as a result of an acetylcholine stimulus, including movement, secretion, enzyme production, and gene expression.
What genes are involved in cellular response to acetylcholine?
Key genes include CHRNA7, CHRM1, CHRM2, CHAT, ACHE, and SLC5A7, which encode receptors, synthesizing enzymes, and transporters for acetylcholine.
How does acetylcholine trigger cellular responses?
Acetylcholine binds to muscarinic and nicotinic receptors, activating G proteins or ion channels that initiate signaling cascades and functional outputs.
What is the role of alpha7 nicotinic receptor in inflammation?
Alpha7 nicotinic receptor mediates the anti-inflammatory effects of vagus nerve stimulation by suppressing pro-inflammatory cytokine production.
How is cellular response to acetylcholine studied experimentally?
Researchers use calcium imaging, electrophysiology, RNA-seq, proteomics, and CRISPR knockout models to study this process.
What diseases are linked to cellular response to acetylcholine?
Inflammatory diseases, atopic dermatitis, intestinal stem cell dysfunction, and bone disorders have been linked to cholinergic signaling.
Can CRISPR be used to study cellular response to acetylcholine?
Yes, CRISPR knockout, knock-in, and overexpression models are widely used to test the role of specific genes in this process.
What is the difference between muscarinic and nicotinic responses to acetylcholine?
Muscarinic responses are slower and G protein-mediated, while nicotinic responses are fast and ionotropic, as shown in cortical neurons.
How does sleep affect cholinergic signaling in the gut?
Sleep disturbance triggers aberrant activation of vagus circuitry and induces intestinal stem cell dysfunction, linking sleep to cholinergic homeostasis.
What cell types show cellular response to acetylcholine?
Neurons, immune cells, tuft cells, osteocytes, and gastric parietal cells all exhibit cellular responses to acetylcholine.
Conclusion
GO:1905145 cellular response to acetylcholine is a fundamental biological process that connects cholinergic signaling to diverse cellular outputs, from inflammation control to gut immunity and bone adaptation. Understanding its mechanisms and regulation is essential for developing therapies targeting cholinergic dysfunction in human disease. CRISPR-based models and multi-omics approaches provide powerful tools to dissect this process and identify new therapeutic targets.
References
- 1. Borovikova LV et al.. 2000. Vagus nerve stimulation attenuates the systemic inflammatory response to endotoxin.. Nature 405(6785):458-62 PMID: 10839541
- 2. Zhang X et al.. 2020. Brain control of humoral immune responses amenable to behavioural modulation.. Nature 581(7807):204-208 PMID: 32405000
- 3. Zhang M et al.. 2026. Sleep disturbance triggers aberrant activation of vagus circuitry and induces intestinal stem cell dysfunction.. Cell Stem Cell 33(2):306-324.e8 PMID: 41650935
- 4. Mora-Antoinette M et al.. 2025. Cholinergic regulation of osteocyte mechanobiology: A paradigm for bone adaptation.. Sci Adv 11(34):eads9720 PMID: 40845105
- 5. Ndjim M et al.. 2024. Tuft cell acetylcholine is released into the gut lumen to promote anti-helminth immunity.. Immunity 57(6):1260-1273.e7 PMID: 38744292
- 6. Richter P et al.. 2024. Sodium-Permeable Ion Channels TRPM4 and TRPM5 are Functional in Human Gastric Parietal Cells in Culture and Modulate the Cellular Response to Bitter-Tasting Food Constituents.. J Agric Food Chem 72(9):4906-4917 PMID: 38378185
- 7. McCormick DA et al.. 1985. Two types of muscarinic response to acetylcholine in mammalian cortical neurons.. Proc Natl Acad Sci U S A 82(18):6344-8 PMID: 3862134
- 8. Hanifin JM. 1982. Atopic dermatitis.. J Am Acad Dermatol 6(1):1-13 PMID: 7045169
