GO:1905396 cellular response to flavonoid: Signaling Pathway, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:1905396 (cellular response to flavonoid) describes any change in a cell's state or activity caused by a flavonoid stimulus, including movement, secretion, enzyme production and gene expression.
• Flavonoids such as luteolin, morin, kurarinone and flavonoid glycosides trigger measurable cellular responses in cancer, neuronal, immune and dental pulp cells [1,4,5,6].
• The response often involves mitochondrial stress adaptation, STING-dependent inflammatory signaling, and cell-cycle or proliferation changes [4,5].
• Flavonoid glycosides require cellular uptake and hydrolysis to aglycones before they can inhibit oral cancer cell proliferation.
• In plants, flavonoid biosynthesis and cold tolerance are linked through CPK27-mediated phosphorylation of HY5, showing the term spans kingdoms.
• CRISPR knockout, knock-in, point-mutation and overexpression models are essential to causally test which genes mediate cellular responses to flavonoids [1,5].
Description
GO:1905396, cellular response to flavonoid, is a Gene Ontology biological process term that captures any change in a cell's state or activity as a result of a flavonoid stimulus. Flavonoids are a large class of plant-derived polyphenolic compounds that include luteolin, morin, kurarinone and various glycosides, and they elicit diverse cellular responses ranging from altered gene expression to changes in secretion, movement and enzyme production [1,4,5,6]. Because flavonoids are widely consumed in the human diet and are investigated as anticancer, neuroprotective and anti-inflammatory agents, understanding the cellular response to flavonoid is central to pharmacology, nutrition and cell biology [1,7].
cellular response to flavonoid At A Glance
| GO ID | GO:1905396 |
|---|---|
| GO term | cellular response to flavonoid |
| Ontology | biological_process |
| Synonym | none |
| Major function | Mediates cellular changes in movement, secretion, enzyme production and gene expression in response to flavonoid stimuli [1,4,5] |
| Taxonomic scope | Eukaryotic cells, including human cancer cells, immune cells, neuronal cells and plant cells [1,2,4,5,6] |
| Representative stimuli | Luteolin, morin, kurarinone, flavonoid glycosides and other dietary or synthetic flavonoids [1,4,5,6] |
| Key downstream processes | Mitochondrial stress adaptation, STING-dependent inflammation, cell-cycle arrest and apoptosis [4,5] |
| Disease relevance | Cancer, Alzheimer's disease, inflammatory diseases and dental pulp inflammation [1,3,5,7] |
What Is GO:1905396?
According to the QuickGO definition, cellular response to flavonoid (GO:1905396) 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 flavonoid stimulus. In other words, it is the collection of cellular events triggered when a cell encounters a flavonoid molecule, from initial sensing through downstream signaling, transcriptional reprogramming and functional outcomes [1,4,5].
Why Is cellular response to flavonoid Important in Cell Biology?
Cellular response to flavonoid is important because flavonoids are among the most common bioactive dietary compounds and are actively developed as therapeutic agents for cancer, neurodegeneration and inflammatory disease [1,5,7]. Defining how cells sense and respond to flavonoids at the molecular level enables researchers to identify causal genes, predict off-target effects and design flavonoid-based interventions with reproducible cellular outcomes [1,4,6].
• Flavonoids such as luteolin are investigated as anticancer agents that alter proliferation, apoptosis and signaling in tumor cells.
• Morin enhances healthspan and neuroprotection in Caenorhabditis elegans via mitochondrial stress adaptation, linking flavonoid response to aging biology.
• Kurarinone alleviates cGAS-STING-triggered inflammatory diseases by targeting STING, showing flavonoid response intersects innate immunity.
• Flavonoid glycosides inhibit oral cancer cell proliferation after cellular uptake and hydrolysis to aglycones, highlighting uptake-dependent responses.
• Flavonoid-based primers applied to caries-affected dentin affect pulp cells, connecting the term to dental and regenerative biology.
• Network medicine approaches identify flavonoid compounds relevant to Alzheimer's disease, supporting neuroprotective applications.
• Flavonoid impairment of neutrophil response demonstrates early evidence that flavonoids modulate immune cell behavior.
• In plants, CPK27 promotes flavonoid biosynthesis and cold tolerance by phosphorylating HY5, showing conserved stress-response logic.
• Understanding cellular response to flavonoid supports rational design of nutraceuticals and plant-derived drugs [1,7].
• CRISPR-based causal testing of flavonoid-response genes accelerates target validation for therapeutic development [1,5].
What Happens During cellular response to flavonoid?
Flavonoid sensing and cellular uptake
In simple terms: First, the cell must encounter and take up the flavonoid before anything else can happen.
Cellular response to flavonoid begins with exposure of the cell to a flavonoid stimulus. For glycosylated flavonoids, cellular uptake and subsequent hydrolysis to aglycones are required before biological effects such as inhibition of oral cancer cell proliferation can occur. This step determines intracellular bioavailability and is a prerequisite for downstream signaling.
Mitochondrial stress adaptation and metabolic signaling
In simple terms: The cell can respond to flavonoids by adjusting how its mitochondria handle stress.
Morin enhances healthspan and neuroprotection in Caenorhabditis elegans via mitochondrial stress adaptation, indicating that mitochondrial signaling is a core component of the cellular response to flavonoid. This adaptation links flavonoid exposure to changes in cellular energy metabolism and stress resistance.
Innate immune and inflammatory signaling
In simple terms: Some flavonoids change how immune cells send inflammatory alarms.
Kurarinone alleviates cGAS-STING-triggered inflammatory diseases by targeting STING, demonstrating that flavonoid stimuli can directly modulate innate immune signaling nodes. Early work also showed that flavonoids impair neutrophil response, supporting a role for these compounds in regulating immune cell activity.
Transcriptional and proliferative reprogramming
In simple terms: The cell may switch genes on or off and change how fast it grows.
Flavonoids such as luteolin alter gene expression and proliferation in cancer cells, consistent with the GO definition that includes gene expression changes. Flavonoid glycosides inhibit oral cancer cell proliferation, showing that cellular response to flavonoid can culminate in cell-cycle or growth arrest.
Cross-kingdom flavonoid biosynthesis and stress response
In simple terms: Plants also respond to and produce flavonoids as part of stress defense.
In tomato, CPK27 enhances cold tolerance by promoting flavonoid biosynthesis through phosphorylation of HY5, illustrating that cellular responses to flavonoid-related cues are conserved in plants and can be regulated by kinase signaling.
Key Genes Involved in GO:1905396 cellular response to flavonoid
The following genes and proteins have been experimentally linked to cellular responses to flavonoids or to flavonoid biosynthesis and signaling.
| Gene | Major Role | Research Relevance |
|---|---|---|
| STING | Innate immune signaling adaptor targeted by kurarinone | Flavonoid-mediated anti-inflammatory response |
| HY5 | Transcription factor phosphorylated by CPK27 to promote flavonoid biosynthesis | Plant cold tolerance and flavonoid regulation |
| CPK27 | Calcium-dependent protein kinase that phosphorylates HY5 | Upstream regulator of flavonoid biosynthesis |
| Luteolin-responsive genes | Mediate anticancer effects of luteolin | Cancer cell proliferation and apoptosis |
| Morin-responsive genes | Mediate mitochondrial stress adaptation and neuroprotection | Aging and neuroprotection in C. elegans |
| Flavonoid glycoside transporters | Facilitate cellular uptake of glycosylated flavonoids | Oral cancer cell proliferation |
| Glycosidases | Hydrolyze flavonoid glycosides to aglycones | Intracellular activation of flavonoids |
| Neutrophil response genes | Mediate flavonoid impairment of neutrophil function | Immune cell regulation |
| Alzheimer's disease flavonoid targets | Network medicine-identified flavonoid targets | Neurodegeneration |
| Pulp cell response genes | Mediate transdentinal effects of flavonoid primers | Dental pulp biology |
| cGAS | Cytosolic DNA sensor upstream of STING | Inflammatory disease signaling |
| NF-kB pathway genes | Downstream inflammatory transcription factors | Flavonoid anti-inflammatory effects |
| Mitochondrial stress genes | Mediate morin-induced healthspan extension | Aging and mitochondrial biology |
| Cell-cycle regulators | Control proliferation arrest induced by flavonoids | Cancer cell growth inhibition [1,6] |
| Apoptosis regulators | Mediate flavonoid-induced cell death | Anticancer mechanisms |
| Antioxidant response genes | Counteract oxidative stress after flavonoid exposure | Cellular stress adaptation |
| Flavonoid biosynthetic enzymes | Produce flavonoids in plants | Plant stress tolerance |
How Is cellular response to flavonoid Regulated?
Cellular response to flavonoid is regulated at multiple levels. In plants, CPK27 phosphorylates HY5 to promote flavonoid biosynthesis, providing a kinase-dependent regulatory input. In mammalian cells, the response can be gated by uptake and hydrolysis of flavonoid glycosides, meaning that intracellular activation is a regulatory checkpoint. Flavonoids can also directly target signaling proteins such as STING, thereby modulating inflammatory cascades. Mitochondrial stress adaptation pathways further shape the cellular outcome of flavonoid exposure.
cellular response to flavonoid and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| STING | cGAS-STING-driven inflammatory diseases | STING knockout or point-mutation cells treated with kurarinone |
| Luteolin-responsive genes | Cancer proliferation and apoptosis | Cancer cell lines with CRISPR knockout of candidate targets |
| Flavonoid glycoside transporters | Oral cancer cell proliferation | Oral cancer cells with transporter knockout or overexpression |
| Morin-responsive mitochondrial genes | Aging and neuroprotection | C. elegans or mammalian neuronal cells with mitochondrial gene edits |
| HY5 / CPK27 | Plant cold tolerance and flavonoid biosynthesis | Tomato or Arabidopsis knock-in and point-mutation lines |
Cancer
Luteolin, a flavonoid, has been reviewed as an anticancer agent that alters proliferation, apoptosis and signaling in tumor cells. Flavonoid glycosides inhibit oral cancer cell proliferation after cellular uptake and hydrolysis to aglycones, directly linking cellular response to flavonoid with cancer cell growth control. These findings support the development of flavonoid-based anticancer strategies and the need to identify the genes that mediate sensitivity or resistance [1,6].
Neurodegeneration and aging
Morin enhances healthspan and neuroprotection in Caenorhabditis elegans via mitochondrial stress adaptation, connecting cellular response to flavonoid with aging and neuroprotective pathways. Network medicine frameworks have also identified flavonoid compounds relevant to Alzheimer's disease, supporting further investigation of flavonoid responses in neurons.
Inflammatory and immune diseases
Kurarinone alleviates cGAS-STING-triggered inflammatory diseases by targeting STING, demonstrating that flavonoid responses can suppress innate immune-driven inflammation. Early studies showed that flavonoids impair neutrophil response, indicating that immune cell behavior is a relevant disease-related outcome.
Dental and regenerative biology
Flavonoid-based primers applied to caries-affected dentin produce transdentinal effects on pulp cells, linking cellular response to flavonoid with dental tissue biology and potential regenerative applications.
From cellular response to flavonoid-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Is a candidate gene required for flavonoid-induced growth arrest? | CRISPR knockout in cancer cell lines followed by luteolin treatment |
| Does a specific point mutation in STING alter kurarinone sensitivity? | Point-mutation knock-in of STING variants |
| Can a fluorescent tag track flavonoid-responsive protein localization? | Tagged knock-in of the target gene |
| Does overexpression of a flavonoid transporter increase cellular uptake? | Overexpression cell model treated with flavonoid glycosides |
| Which genes mediate mitochondrial stress adaptation to morin? | Knockout or overexpression in C. elegans or mammalian cells |
| Does CPK27 phosphorylation of HY5 control flavonoid biosynthesis? | Plant knock-in and point-mutation lines |
How to Study the cellular response to flavonoid Process
| Method | What It Measures | Typical Application |
|---|---|---|
| RNA-seq | Global gene expression changes | Identify flavonoid-responsive genes |
| CRISPR library screening | Genes required for a flavonoid phenotype | Discover causal mediators of growth arrest or inflammation [1,5] |
| Western blot | Protein expression and phosphorylation | Measure STING or HY5 pathway activation [2,5] |
| Reporter assays | Transcriptional activity of signaling pathways | Quantify NF-kB or stress-responsive promoters |
| Proliferation assays | Cell growth and viability | Test flavonoid effects on cancer cells [1,6] |
| Mitochondrial stress assays | Mitochondrial function and adaptation | Study morin-induced healthspan effects |
| Neutrophil functional assays | Immune cell response | Assess flavonoid impairment of neutrophil activity |
| Dental pulp cell assays | Pulp cell behavior after primer application | Evaluate transdentinal flavonoid effects |
Transcriptomic profiling
RNA-seq after flavonoid treatment can identify gene expression changes that define the cellular response to flavonoid, as reviewed for luteolin in cancer cells. This approach is useful for discovering candidate mediators of proliferation, apoptosis and inflammatory signaling [1,5].
Functional genomic screening
CRISPR library screening enables unbiased identification of genes required for flavonoid-induced phenotypes such as growth inhibition or inflammatory suppression [1,5]. Hits can then be validated with individual knockout or point-mutation models.
Biochemical and signaling assays
Western blotting, kinase assays and reporter assays can measure pathway activation after flavonoid exposure, including STING-dependent inflammatory signaling and CPK27-HY5 phosphorylation [2,5]. These methods connect the stimulus to specific molecular events [2,5].
Cellular and organismal phenotyping
Proliferation, apoptosis, mitochondrial stress and healthspan assays provide functional readouts of cellular response to flavonoid in cancer, immune, neuronal and dental pulp models [1,3,4,6]. Organismal models such as C. elegans add aging and neuroprotection endpoints.
How CRISPR Can Be Used to Study GO:1905396 cellular response to flavonoid
Knockout
CRISPR knockout of candidate genes such as STING or flavonoid transporters allows researchers to test whether they are required for cellular response to flavonoid [5,6]. Loss-of-function models can reveal essential mediators of proliferation arrest, inflammatory suppression or mitochondrial adaptation [1,4].
Point Mutation
Point-mutation knock-in can model specific amino acid changes in flavonoid-targeted proteins, such as STING variants that alter kurarinone sensitivity. This approach helps distinguish direct target engagement from downstream effects.
Knock-in
Knock-in of tagged or reporter alleles enables tracking of flavonoid-responsive proteins in live cells, including localization and expression dynamics. Knock-in can also introduce humanized or disease-relevant variants for mechanistic studies.
Overexpression
Overexpression of flavonoid transporters or metabolic enzymes can increase intracellular flavonoid levels and amplify cellular responses, as shown for glycoside uptake and hydrolysis. This strategy is useful for gain-of-function studies of rate-limiting steps.
How EDITGENE Supports cellular response to flavonoid Research
Researchers studying cellular response to flavonoid-related genes often need to determine whether a candidate gene is causally involved in the cellular response to flavonoid or merely correlated with it. EDITGENE provides publication-ready CRISPR cell models and screening services to move from candidate lists to validated mechanisms.
Contact EDITGENE today to design your custom CRISPR model for cellular response to flavonoid research.
Frequently Asked Questions About cellular response to flavonoid
What is GO:1905396 cellular response to flavonoid?
GO:1905396 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 a flavonoid stimulus, including movement, secretion, enzyme production and gene expression.
What genes are involved in cellular response to flavonoid?
Genes and proteins implicated include STING, HY5, CPK27, flavonoid transporters, glycosidases and mitochondrial stress mediators, depending on the cell type and flavonoid studied [2,4,5,6].
How do flavonoids affect cancer cells?
Flavonoids such as luteolin can alter proliferation, apoptosis and signaling in cancer cells, and flavonoid glycosides can inhibit oral cancer cell proliferation after uptake and hydrolysis [1,6].
Do flavonoids affect mitochondrial function?
Yes, morin enhances healthspan and neuroprotection in Caenorhabditis elegans via mitochondrial stress adaptation, showing mitochondrial responses to flavonoids.
Can flavonoids modulate inflammation?
Kurarinone alleviates cGAS-STING-triggered inflammatory diseases by targeting STING, and early work showed flavonoids impair neutrophil response [5,8].
Are flavonoid glycosides active without hydrolysis?
Flavonoid glycosides require cellular uptake and hydrolysis to aglycones to inhibit oral cancer cell proliferation, indicating that hydrolysis is often necessary for activity.
How is flavonoid biosynthesis regulated in plants?
In tomato, CPK27 enhances cold tolerance by promoting flavonoid biosynthesis through phosphorylation of HY5.
What research methods study cellular response to flavonoid?
Common methods include RNA-seq, CRISPR library screening, western blotting, reporter assays, proliferation assays and mitochondrial stress assays [1,4,5,6].
Are flavonoids relevant to Alzheimer's disease?
Network medicine frameworks have identified flavonoid compounds in treating Alzheimer's disease, supporting further investigation of their cellular responses.
How can CRISPR help study cellular response to flavonoid?
CRISPR knockout, point-mutation, knock-in and overexpression models allow causal testing of genes such as STING or flavonoid transporters in flavonoid response pathways [5,6].
Conclusion
GO:1905396 cellular response to flavonoid captures a broad and biologically important process through which cells react to plant-derived polyphenols. Evidence spans cancer, neuroprotection, inflammation, dental biology and plant stress tolerance, with key roles for STING, HY5, CPK27, flavonoid transporters and mitochondrial stress pathways [1,2,4,5,6]. Continued research using CRISPR models and functional genomics will clarify which genes causally drive these responses and how they can be harnessed therapeutically [1,5].
References
- 1. Imran M et al.. 2019. Luteolin, a flavonoid, as an anticancer agent: A review.. Biomed Pharmacother 112:108612 PMID: 30798142
- 2. Lin R et al.. 2025. CPK27 enhances cold tolerance by promoting flavonoid biosynthesis through phosphorylating HY5 in tomato.. New Phytol 246(5):2174-2191 PMID: 40235338
- 3. Sahadi BO et al.. 2025. Transdentinal effects of flavonoid-based primers applied to caries-affected dentin on pulp cells.. Clin Oral Investig 30(1):1 PMID: 41354703
- 4. Jo YH et al.. 2025. Morin enhances healthspan and neuroprotection in Caenorhabditis elegans via mitochondrial stress adaptation.. Mech Ageing Dev 228:112120 PMID: 41106439
- 5. Liu L et al.. 2025. Kurarinone Alleviates cGAS-STING-Triggered Inflammatory Diseases by Targeting STING.. Phytother Res 39(8):3450-3465 PMID: 40604353
- 6. Browning AM et al.. 2005. Flavonoid glycosides inhibit oral cancer cell proliferation--role of cellular uptake and hydrolysis to the aglycones.. J Pharm Pharmacol 57(8):1037-42 PMID: 16102260
- 7. Ding MR et al.. 2025. Identification of Flavonoid Compounds in Treating Alzheimer's Disease Based on Network Medicine Framework Strategy.. Am J Chin Med 53(7):2167-2198 PMID: 40884807
- 8. Pagonis C et al.. 1986. Flavonoid impairment of neutrophil response.. Biochem Pharmacol 35(2):237-45 PMID: 3002387
