GO:0071313 cellular response to caffeine: Signaling Pathway, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0071313 cellular response to caffeine describes how a single cell changes its state or activity after exposure to caffeine, an alkaloid that plants use as a natural pesticide.
• Caffeine triggers rapid signaling events including calcium release through ryanodine receptors and activation of DNA damage response kinases such as ATM and Chk2.
• The p53 tumor suppressor and 53BP1 are recruited to DNA lesions in caffeine-treated cells, linking caffeine exposure to genome surveillance pathways.
• Caffeine can suppress apoptosis in cancer cells by inhibiting the ATM-Chk2-p53 axis, which has implications for chemoradiotherapy.
• Caffeine also modulates the human circadian clock in vivo and in vitro, showing that the cellular response extends beyond DNA damage signaling.
• Quantitative phosphoproteomics has revealed widespread phosphorylation changes in HepG2 cells treated with caffeine, coumarin, and quercetin.
Description
Cellular response to caffeine (GO:0071313) is a biological process that captures any change in a cell's state or activity following exposure to caffeine, including movement, secretion, enzyme production, and gene expression. Caffeine is a plant alkaloid that acts as a natural pesticide by paralyzing and killing certain insects, but in human and animal cells it triggers a complex set of signaling and stress responses. Understanding this process is important because caffeine is one of the most widely consumed psychoactive substances and is also used experimentally to manipulate DNA damage checkpoints and calcium signaling. The cellular response to caffeine involves multiple molecular players, from ryanodine receptors that mediate calcium release to ATM, Chk2, p53, and 53BP1 that coordinate DNA damage signaling. Recent phosphoproteomic studies have expanded the list of caffeine-responsive pathways, showing that caffeine alters phosphorylation of many proteins in liver cells. This article integrates authoritative QuickGO annotation with real PubMed literature to provide a research-grade overview of GO:0071313, its key genes, disease relevance, and experimental methods.
cellular response to caffeine At A Glance
| GO ID | GO:0071313 |
|---|---|
| GO term | cellular response to caffeine |
| Ontology | biological_process |
| Synonym | none |
| Major function | Mediates cellular changes in state or activity in response to caffeine stimulus |
| Definition source | QuickGO |
| Parent terms | cellular response to organic substance, response to caffeine |
| Related diseases | Cancer, circadian rhythm disorders, DNA damage response defects |
| Key genes | ATM, CHEK2, TP53, TP53BP1, RYR1, RYR2, TRPM4, TRPM5 |
What Is GO:0071313?
According to the Gene Ontology, GO:0071313 cellular response to caffeine 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 a caffeine stimulus. Caffeine is an alkaloid found in numerous plant species, where it acts as a natural pesticide that paralyzes and kills certain insects feeding upon them. This term is a child of cellular response to organic substance and response to caffeine, and it is used to annotate gene products that participate in the cellular reaction to caffeine exposure.
Why Is cellular response to caffeine Important in Cell Biology?
Cellular response to caffeine is important because caffeine is not only a common dietary component but also a powerful experimental tool that modulates fundamental cellular processes such as calcium signaling, DNA damage checkpoints, and apoptosis. Caffeine's ability to inhibit ATM and Chk2 kinases has made it a standard reagent in radiobiology and cancer research to study checkpoint abrogation. The p53 tumor suppressor and 53BP1 are central to the DNA damage response, and caffeine exposure can alter their functions, linking GO:0071313 to genome stability and cancer therapy. Furthermore, caffeine affects the human circadian clock, demonstrating that the cellular response to caffeine has systemic physiological consequences. Quantitative phosphoproteomics has revealed that caffeine induces widespread phosphorylation changes in HepG2 cells, indicating that the response involves many signaling networks beyond the classical DNA damage pathway. Therefore, studying GO:0071313 helps researchers understand how cells integrate environmental stimuli and how caffeine might be used or avoided in therapeutic contexts.
• Caffeine is a widely consumed alkaloid that modulates cellular signaling, making GO:0071313 relevant to nutrition and pharmacology.
• Caffeine inhibits ATM and Chk2 kinases, which are critical for DNA damage checkpoints, and this affects cancer cell survival after radiation.
• The p53 tumor suppressor participates in the cellular response to DNA damage, and caffeine can influence p53-dependent outcomes.
• 53BP1 is an early participant in the response to DNA double-strand breaks, and caffeine exposure can alter its recruitment.
• Ryanodine receptor isoforms mediate caffeine-induced calcium release in skeletal muscle, linking GO:0071313 to excitation-contraction coupling.
• TRPM4 and TRPM5 ion channels are functional in human gastric parietal cells and modulate the cellular response to bitter compounds including caffeine.
• Caffeine affects the human circadian clock in vivo and in vitro, showing that GO:0071313 extends to chronobiology.
• Phosphoproteomics has identified numerous caffeine-responsive phosphorylation sites in HepG2 cells, revealing new signaling nodes.
• Centrobin plays a role in the cellular response to DNA damage, and caffeine can influence DNA damage signaling pathways.
• Understanding GO:0071313 can inform the development of caffeine-based adjuvants in cancer therapy and chemoprevention.
What Happens During cellular response to caffeine?
Caffeine sensing and calcium release
In simple terms: Caffeine first interacts with receptors on the cell, causing calcium to flood out of internal stores.
In skeletal muscle cells, caffeine directly activates ryanodine receptor isoforms (RYR1 and RYR2), triggering calcium release from the sarcoplasmic reticulum. This calcium signal is one of the earliest events in the cellular response to caffeine and can lead to muscle contraction. In human gastric parietal cells, bitter-tasting compounds including caffeine activate sodium-permeable ion channels TRPM4 and TRPM5, which modulate the cellular response to bitter food constituents. These sensing mechanisms illustrate that caffeine can initiate signaling through multiple membrane and intracellular receptors.
Activation of DNA damage response kinases
In simple terms: Caffeine can block the kinases that normally stop the cell cycle when DNA is damaged.
Caffeine is a well-known inhibitor of ATM and Chk2 kinases, which are central to the DNA damage checkpoint. In bladder cancer RT4 cells exposed to ionizing radiation, caffeine suppresses apoptosis by inhibiting the ATM-Chk2-p53 axis. This inhibition allows cells with damaged DNA to bypass checkpoints, which can be exploited experimentally to study checkpoint abrogation. The p53 protein itself participates in the cellular response to DNA damage, and caffeine can modulate p53-dependent transcriptional programs.
Recruitment of DNA repair factors
In simple terms: Proteins like 53BP1 rush to broken DNA to help repair it, and caffeine can change this process.
53BP1 is an early participant in the cellular response to DNA double-strand breaks, forming foci at damage sites. Caffeine exposure can alter the recruitment or retention of 53BP1 at damage sites, thereby influencing repair pathway choice. Centrobin also plays a role in the cellular response to DNA damage, and its function may intersect with caffeine-sensitive pathways. These events are critical for maintaining genome stability and are often studied using caffeine as a tool to perturb the DNA damage response.
Global phosphorylation changes and downstream effects
In simple terms: Caffeine causes many proteins to gain or lose phosphate groups, changing what the cell does.
Quantitative phosphoproteomics in HepG2 cells treated with caffeine, coumarin, and quercetin revealed widespread changes in protein phosphorylation, affecting pathways such as cell cycle, apoptosis, and metabolism. These phosphorylation events represent the downstream signaling cascade of the cellular response to caffeine. Additionally, caffeine affects the human circadian clock in vivo and in vitro, showing that the response can alter gene expression rhythms. Together, these molecular events lead to changes in cell movement, secretion, enzyme production, and gene expression as defined by GO:0071313.
Key Genes Involved in GO:0071313 cellular response to caffeine
The following genes and proteins are experimentally implicated in the cellular response to caffeine, based on real PubMed literature.
| Gene | Major Role | Research Relevance |
|---|---|---|
| ATM | DNA damage checkpoint kinase inhibited by caffeine | Caffeine suppresses apoptosis via ATM-Chk2-p53 axis in bladder cancer cells |
| CHEK2 | Effector kinase in DNA damage checkpoint | Caffeine inhibits Chk2, affecting cell cycle arrest |
| TP53 | Tumor suppressor and transcription factor | Participates in cellular response to DNA damage; modulated by caffeine |
| TP53BP1 | DNA double-strand break repair factor | Early participant in DNA damage response; affected by caffeine |
| RYR1 | Ryanodine receptor 1, calcium release channel | Mediates caffeine-induced calcium release in skeletal muscle |
| RYR2 | Ryanodine receptor 2, calcium release channel | Contributes to caffeine response in muscle and heart |
| TRPM4 | Sodium-permeable ion channel | Modulates cellular response to bitter compounds including caffeine in gastric parietal cells |
| TRPM5 | Sodium-permeable ion channel | Functional in gastric parietal cells; responds to caffeine |
| CNTROB | Centrobin, centrosomal protein | Plays a role in cellular response to DNA damage |
| PER1 | Circadian clock gene | Caffeine affects circadian clock in vivo and in vitro |
| PER2 | Circadian clock gene | Caffeine alters circadian rhythms |
| PER3 | Circadian clock gene | Part of the circadian response to caffeine |
| CSNK1E | Casein kinase 1 epsilon, clock regulator | May be affected by caffeine in circadian clock |
| CREB1 | Transcription factor | Downstream of calcium and cAMP signaling in caffeine response |
| CAMK2 | Calcium/calmodulin-dependent kinase | Mediates calcium signaling triggered by caffeine |
| MAPK1 | Mitogen-activated protein kinase | Phosphorylation changes observed after caffeine treatment |
| AKT1 | Serine/threonine kinase | Phosphoproteomics reveals changes in HepG2 cells treated with caffeine |
How Is cellular response to caffeine Regulated?
The cellular response to caffeine is regulated at multiple levels. Caffeine directly inhibits ATM and Chk2 kinase activities, thereby disrupting the DNA damage checkpoint. Calcium release through ryanodine receptors is modulated by the redox state and by associated proteins such as calmodulin. The circadian clock response to caffeine involves transcriptional feedback loops of clock genes such as PER1, PER2, and PER3. Phosphorylation cascades downstream of caffeine are dynamic and reversible, as shown by quantitative phosphoproteomics. Additionally, ion channels TRPM4 and TRPM5 regulate the cellular response to bitter compounds including caffeine in gastric parietal cells. These regulatory mechanisms ensure that the cellular response to caffeine is context-dependent and tightly controlled.
cellular response to caffeine and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| ATM | Cancer, ataxia-telangiectasia | ATM knockout cell line treated with caffeine and radiation |
| TP53 | Cancer, Li-Fraumeni syndrome | TP53 point-mutant knock-in cells exposed to caffeine |
| TP53BP1 | Cancer, DNA repair deficiency | 53BP1 knockout cells for DNA damage foci analysis |
| RYR1 | Malignant hyperthermia, central core disease | RYR1 knock-in mutations in muscle cells for caffeine contracture test |
| TRPM4 | Gastric acid secretion disorders | TRPM4 overexpression in gastric parietal cell lines |
Cancer and chemoradiotherapy
Caffeine's inhibition of ATM and Chk2 can abrogate DNA damage checkpoints, leading to suppressed apoptosis in bladder cancer RT4 cells after ionizing radiation. This has implications for cancer therapy, as caffeine or its analogs might be used to sensitize tumors to radiation or chemotherapy. The p53 tumor suppressor, which is mutated in many cancers, participates in the cellular response to DNA damage and can be modulated by caffeine. 53BP1, a key DNA repair factor, is also involved in the response to double-strand breaks and may influence cancer predisposition.
Circadian rhythm disorders
Caffeine affects the human circadian clock in vivo and in vitro, delaying circadian phase and altering clock gene expression. This links the cellular response to caffeine to sleep disorders, jet lag, and shift work-related pathologies. Understanding how caffeine modulates clock genes such as PER1, PER2, and PER3 could inform strategies for managing circadian rhythm disorders.
Muscle and metabolic disorders
Ryanodine receptor isoforms RYR1 and RYR2 mediate caffeine-induced calcium release in skeletal muscle. Mutations in RYR1 are associated with malignant hyperthermia and central core disease, and caffeine is used diagnostically in muscle contracture tests. Thus, the cellular response to caffeine is directly relevant to muscle physiology and disease.
Gastric and sensory biology
TRPM4 and TRPM5 ion channels are functional in human gastric parietal cells and modulate the cellular response to bitter-tasting food constituents including caffeine. This suggests that caffeine can influence gastric acid secretion and nutrient sensing, with potential implications for gastrointestinal disorders.
From cellular response to caffeine-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does ATM mediate caffeine-induced checkpoint abrogation? | ATM knockout cell line treated with caffeine and ionizing radiation |
| How does p53 mutation affect cellular response to caffeine? | TP53 point-mutation knock-in cells |
| What is the role of 53BP1 in caffeine-sensitive DNA repair? | 53BP1 knockout cells with DNA damage foci imaging |
| Does RYR1 mutation alter caffeine-induced calcium release? | RYR1 knock-in muscle cells with calcium imaging |
| How does TRPM4 overexpression affect bitter taste response? | TRPM4 overexpression in gastric parietal cells |
| What are the global phosphorylation changes after caffeine? | HepG2 cells treated with caffeine for phosphoproteomics |
How to Study the cellular response to caffeine Process
| Method | What It Measures | Typical Application |
|---|---|---|
| Quantitative phosphoproteomics | Global phosphorylation changes | Identifying caffeine-responsive signaling pathways |
| Immunofluorescence foci imaging | DNA repair factor recruitment | Quantifying 53BP1 foci after caffeine and DNA damage |
| Calcium imaging | Intracellular calcium release | Measuring ryanodine receptor activity in muscle cells |
| Circadian luciferase reporter | Clock gene expression rhythms | Assessing caffeine effects on circadian phase |
| Western blotting | Protein expression and phosphorylation | Validating ATM, Chk2, p53 changes after caffeine |
| RNA-seq | Transcriptional changes | Gene expression profiling after caffeine treatment |
| Cell viability assay | Apoptosis and proliferation | Testing caffeine effects on cancer cell survival |
| Patch-clamp electrophysiology | Ion channel activity | Measuring TRPM4/TRPM5 currents in response to caffeine |
Quantitative phosphoproteomics
Quantitative phosphoproteomics using mass spectrometry can identify thousands of phosphorylation sites changed by caffeine treatment. Zhang et al. (2022) applied this method to HepG2 cells treated with caffeine, coumarin, and quercetin, revealing widespread signaling changes. This approach is ideal for discovering novel kinases and substrates in the cellular response to caffeine.
DNA damage foci imaging
Immunofluorescence microscopy for 53BP1 and other DNA repair factors can visualize recruitment to DNA double-strand breaks after caffeine exposure. This method allows researchers to quantify foci number, size, and kinetics, providing insights into how caffeine alters repair dynamics.
Calcium imaging
Calcium-sensitive dyes or genetically encoded calcium indicators can measure caffeine-induced calcium release from intracellular stores in muscle or other cell types. This is particularly useful for studying ryanodine receptor function and the role of RYR1 and RYR2 in the cellular response to caffeine.
Circadian clock assays
In vitro circadian clock assays using luciferase reporters or real-time PCR for clock genes can measure how caffeine shifts circadian phase. These methods have been used to show that caffeine affects the human circadian clock in vivo and in vitro.
How CRISPR Can Be Used to Study GO:0071313 cellular response to caffeine
Knockout
CRISPR knockout of genes such as ATM, CHEK2, TP53, or TP53BP1 can reveal their requirement in the cellular response to caffeine. For example, ATM knockout cells show altered checkpoint responses and apoptosis after caffeine and radiation. Knockout of RYR1 or RYR2 can abolish caffeine-induced calcium release, confirming their role in the response.
Point Mutation
CRISPR point mutation can introduce specific amino acid changes in genes like TP53 or RYR1 to model disease-associated variants and test their effect on caffeine response. For instance, p53 point mutants can be used to study how caffeine modulates p53-dependent DNA damage responses. RYR1 point mutations linked to malignant hyperthermia can be tested for altered caffeine sensitivity.
Knock-in
CRISPR knock-in can add tags or reporters to endogenous genes, such as fluorescent tagging of 53BP1 to visualize DNA damage foci in live cells after caffeine treatment. Knock-in of luciferase into clock genes like PER2 allows real-time monitoring of circadian rhythms in response to caffeine.
Overexpression
CRISPR overexpression (e.g., via CRISPRa) can increase expression of genes like TRPM4 or TRPM5 to study their role in the cellular response to caffeine in gastric parietal cells. Overexpression of dominant-negative ATM or Chk2 can mimic caffeine's inhibitory effects and help dissect downstream pathways.
How EDITGENE Supports cellular response to caffeine Research
Researchers studying cellular response to caffeine-related genes often need to determine whether a candidate gene is causally involved in the response or merely correlated with it. CRISPR-based models provide a direct way to test causality by knocking out, mutating, tagging, or overexpressing specific genes in relevant cell types. EDITGENE offers a comprehensive suite of CRISPR services to accelerate this research.
Contact EDITGENE today to design your custom CRISPR model for cellular response to caffeine research.
Frequently Asked Questions About cellular response to caffeine
What is GO:0071313 cellular response to caffeine?
GO:0071313 is a Gene Ontology biological process term that describes any change in a cell's state or activity as a result of a caffeine stimulus, including movement, secretion, enzyme production, and gene expression.
What genes are involved in cellular response to caffeine?
Key genes include ATM, CHEK2, TP53, TP53BP1, RYR1, RYR2, TRPM4, TRPM5, and circadian clock genes such as PER1, PER2, and PER3.
How does caffeine affect DNA damage response?
Caffeine inhibits ATM and Chk2 kinases, disrupting the DNA damage checkpoint and altering p53 and 53BP1 functions.
Does caffeine affect the circadian clock?
Yes, caffeine affects the human circadian clock in vivo and in vitro, delaying circadian phase and altering clock gene expression.
What are the main signaling pathways in cellular response to caffeine?
Major pathways include ryanodine receptor-mediated calcium release, ATM-Chk2-p53 DNA damage signaling, and global phosphorylation changes in pathways such as cell cycle and apoptosis.
How can I study cellular response to caffeine in the lab?
Common methods include quantitative phosphoproteomics, DNA damage foci imaging, calcium imaging, circadian clock assays, and CRISPR knockout or knock-in models.
What diseases are linked to cellular response to caffeine?
Caffeine response is linked to cancer, circadian rhythm disorders, malignant hyperthermia, and gastric acid secretion disorders.
Can CRISPR be used to study cellular response to caffeine?
Yes, CRISPR knockout, point mutation, knock-in, and overexpression models can test the causal role of specific genes in the caffeine response.
What is the role of ryanodine receptors in caffeine response?
Ryanodine receptors RYR1 and RYR2 mediate caffeine-induced calcium release from intracellular stores in muscle cells.
How does caffeine affect gastric parietal cells?
Caffeine activates TRPM4 and TRPM5 ion channels in human gastric parietal cells, modulating the cellular response to bitter-tasting food constituents.
Conclusion
GO:0071313 cellular response to caffeine is a multifaceted biological process that integrates calcium signaling, DNA damage response, circadian clock regulation, and global phosphorylation changes. Key genes such as ATM, CHEK2, TP53, TP53BP1, RYR1, RYR2, TRPM4, and TRPM5 have been experimentally implicated in this response, with relevance to cancer, circadian rhythm disorders, and muscle physiology. Quantitative phosphoproteomics has further expanded the landscape of caffeine-responsive pathways. Researchers can leverage CRISPR-based models from EDITGENE to dissect the causal roles of these genes and accelerate discoveries in caffeine biology.
References
- 1. Burke TM et al.. 2015. Effects of caffeine on the human circadian clock in vivo and in vitro.. Sci Transl Med 7(305):305ra146 PMID: 26378246
- 2. Ryu NM et al.. 2019. Centrobin plays a role in the cellular response to DNA damage.. Cell Cycle 18(20):2660-2671 PMID: 31416397
- 3. Rossi R et al.. 2001. Response to caffeine and ryanodine receptor isoforms in mouse skeletal muscles.. Am J Physiol Cell Physiol 281(2):C585-94 PMID: 11443058
- 4. 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
- 5. Zhang ZW et al.. 2015. Caffeine Suppresses Apoptosis of Bladder Cancer RT4 Cells in Response to Ionizing Radiation by Inhibiting Ataxia Telangiectasia Mutated-Chk2-p53 Axis.. Chin Med J (Engl) 128(21):2938-45 PMID: 26521794
- 6. Kastan MB et al.. 1991. Participation of p53 protein in the cellular response to DNA damage.. Cancer Res 51(23 Pt 1):6304-11 PMID: 1933891
- 7. Zhang Z et al.. 2022. Quantitative phosphoproteomics reveal cellular responses from caffeine, coumarin and quercetin in treated HepG2 cells.. Toxicol Appl Pharmacol 449:116110 PMID: 35688186
- 8. Schultz LB et al.. 2000. p53 binding protein 1 (53BP1) is an early participant in the cellular response to DNA double-strand breaks.. J Cell Biol 151(7):1381-90 PMID: 11134068
