GO:0071298 cellular response to L-ascorbic acid: Signaling Pathway, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0071298 describes how a single cell changes its state or activity in response to L-ascorbic acid (vitamin C).
• The response includes changes in gene expression, enzyme production, secretion, movement and oxidative-stress handling.
• Cellular uptake of L-ascorbic acid is mediated by sodium-dependent vitamin C transporters such as SVCT-2, whose expression level can determine whether the response is protective or cytotoxic.
• In cancer cells, the cellular response to L-ascorbic acid can preferentially kill KRAS-mutant pancreatic cancer cells through DNA damage.
• In immune cells, the response supports immune function and redox homeostasis.
• In fibroblasts, the response regulates type I and III collagen synthesis in an age-related manner.
Description
GO:0071298, cellular response to L-ascorbic acid, is a biological process Gene Ontology term that captures any change in a cell's state or activity caused by an L-ascorbic acid (vitamin C) stimulus. The term is deliberately broad: it covers movement, secretion, enzyme production, gene expression and other cellular outputs that shift when a cell encounters vitamin C. Because vitamin C is a water-soluble antioxidant and an enzyme cofactor, the cellular response to it sits at the intersection of redox biology, metabolism, immune function and cancer cell death.
cellular response to L-ascorbic acid At A Glance
| GO ID | GO:0071298 |
|---|---|
| GO term | cellular response to L-ascorbic acid |
| Ontology | biological_process |
| Synonym | cellular response to ascorbic acid; cellular response to L-ascorbate; cellular response to vitamin C |
| Major function | Mediates cellular changes in state or activity in response to L-ascorbic acid (vitamin C) |
| Stimulus | L-ascorbic acid (vitamin C) |
| Cellular outputs | Movement, secretion, enzyme production, gene expression and related activities |
| Related transporters | SVCT-2 (SLC23A2) and other sodium-dependent vitamin C transporters |
| Disease relevance | Cancer, immune dysfunction, oxidative stress and collagen-related disorders |
What Is GO:0071298?
In plain terms, GO:0071298 is the set of cellular changes triggered when a cell is exposed to L-ascorbic acid. The QuickGO definition states that it 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 an L-ascorbic acid (vitamin C) stimulus. Synonyms include cellular response to ascorbic acid, cellular response to L-ascorbate and cellular response to vitamin C.
Why Is cellular response to L-ascorbic acid Important in Cell Biology?
Understanding GO:0071298 matters because the cellular response to L-ascorbic acid determines whether vitamin C protects a cell, reprograms its metabolism or kills it. In melanoma cells, the response is shaped by oxidative-stress status and gamma-glutamyltransferase expression. In colorectal cancer cells, the response follows a hormetic dose response that depends on SVCT-2 expression. In pancreatic cancer, the response can preferentially kill KRAS-mutant cells through DNA damage. In immune cells, the response supports immune function, and in dermal fibroblasts it regulates collagen synthesis. These examples show that GO:0071298 is not a single pathway but a context-dependent cellular program with direct therapeutic and research implications.
• Defines how cells sense and respond to vitamin C, a nutrient and redox-active molecule.
• Links vitamin C exposure to changes in gene expression and enzyme production.
• Modulates oxidative-stress responses in melanoma cells overexpressing gamma-glutamyltransferase.
• Shows a hormetic dose response in colorectal cancer cells according to SVCT-2 expression.
• Can preferentially kill KRAS-mutant pancreatic cancer cells through DNA damage.
• Supports immune function and the immune response.
• Regulates type I and III collagen synthesis in human dermal fibroblasts in an age-related manner.
• Is relevant to acetic acid stress responses in L-ascorbic acid-producing yeast strains.
• Provides a framework for studying transporter-dependent uptake and downstream cellular outcomes.
• Connects nutrition, redox biology and cancer therapy in a single GO term.
What Happens During cellular response to L-ascorbic acid?
Uptake and sensing of L-ascorbic acid
In simple terms: The cell first takes vitamin C in and detects it.
The cellular response to L-ascorbic acid begins with uptake and sensing. Sodium-dependent vitamin C transporters such as SVCT-2 mediate uptake, and the level of SVCT-2 expression influences the subsequent cellular response. In colorectal cancer cell lines, SVCT-2 expression determines whether L-ascorbic acid produces a protective or cytotoxic hormetic dose response. This step is therefore a key determinant of the entire GO:0071298 process.
Redox and oxidative-stress modulation
In simple terms: Vitamin C changes the cell's oxidative balance.
Once inside the cell, L-ascorbic acid modulates oxidative stress. In melanoma cells overexpressing gamma-glutamyltransferase, the cellular response to ascorbic acid is coupled to oxidative-stress handling. This redox modulation is a central component of GO:0071298 because it can shift the cell toward survival or death depending on context.
Gene expression and enzyme production changes
In simple terms: The cell switches genes and enzymes on or off.
The definition of GO:0071298 explicitly includes changes in gene expression and enzyme production. In dermal fibroblasts, the response to L-ascorbic acid regulates type I and III collagen synthesis, demonstrating that the process controls extracellular matrix gene expression. In immune cells, the response supports immune function through changes in cellular activity.
DNA damage and cell-fate outcomes
In simple terms: In some cells, vitamin C causes DNA damage that can kill the cell.
In KRAS-mutant pancreatic cancer cells, the cellular response to L-ascorbic acid preferentially induces DNA damage and cell death. This outcome is context-dependent and contrasts with the protective roles seen in other cell types. The balance between protection and cytotoxicity is a defining feature of GO:0071298.
Stress-response integration
In simple terms: The vitamin C response plugs into other stress pathways.
The cellular response to L-ascorbic acid integrates with broader stress-response programs. In Saccharomyces cerevisiae, L-ascorbic acid-producing strains show a different response to acetic acid stress compared with wild-type strains. This indicates that GO:0071298 can intersect with other stress-response processes and influence cell survival under adverse conditions.
Key Genes Involved in GO:0071298 cellular response to L-ascorbic acid
The following genes and proteins are experimentally implicated in the cellular response to L-ascorbic acid and related cellular outcomes.
| Gene | Major Role | Research Relevance |
|---|---|---|
| SLC23A2 (SVCT-2) | Sodium-dependent vitamin C transporter | Determines hormetic dose response to L-ascorbic acid in colorectal cancer cells |
| GGT (gamma-glutamyltransferase) | Oxidative-stress and glutathione metabolism | Modulates cellular response to ascorbic acid in melanoma cells |
| KRAS | Oncogenic signaling | KRAS-mutant pancreatic cancer cells are preferentially killed by L-ascorbic acid via DNA damage |
| COL1A1 | Type I collagen synthesis | L-ascorbic acid regulates type I collagen synthesis in dermal fibroblasts |
| COL3A1 | Type III collagen synthesis | L-ascorbic acid regulates type III collagen synthesis in dermal fibroblasts |
| Immune response genes | Immune function | Vitamin C supports immune function and the immune response |
| Redox genes | Oxidative-stress handling | Cellular response to ascorbic acid is coupled to oxidative stress |
| DNA damage response genes | DNA damage and repair | L-ascorbic acid induces DNA damage in KRAS-mutant pancreatic cancer cells |
| Stress-response genes | Acetic acid stress response | L-ascorbic acid-producing yeast strains show altered stress response |
| Mitochondrial repair genes | Mitochondrial repair | NAD+ biosynthesis and mitochondrial repair are linked to acute kidney injury models |
| SLC23A1 | Vitamin C transport | Related transporter family member relevant to uptake |
| Glutathione metabolism genes | Redox homeostasis | Gamma-glutamyltransferase modulates ascorbic acid response |
| Collagen processing genes | Extracellular matrix | Collagen synthesis is regulated by L-ascorbic acid |
| Immune signaling genes | Immune response | Vitamin C and the immune response are linked |
| Oxidative stress response genes | Stress response | Melanoma cells overexpressing GGT show altered ascorbic acid response |
How Is cellular response to L-ascorbic acid Regulated?
The cellular response to L-ascorbic acid is regulated at multiple levels. Uptake is regulated by the expression of sodium-dependent vitamin C transporters such as SVCT-2, which determines the dose-response behavior in colorectal cancer cells. The response is also modulated by oxidative-stress status, as shown in melanoma cells overexpressing gamma-glutamyltransferase. In addition, the response intersects with other stress-response pathways, as seen in yeast strains producing L-ascorbic acid that show altered acetic acid stress responses. These regulatory layers determine whether the cellular outcome is protective, adaptive or cytotoxic.
cellular response to L-ascorbic acid and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| KRAS | Pancreatic cancer | KRAS-mutant pancreatic cancer cell lines treated with L-ascorbic acid |
| SLC23A2 (SVCT-2) | Colorectal cancer | Colorectal cancer cell lines with varying SVCT-2 expression |
| GGT | Melanoma | Melanoma cells overexpressing gamma-glutamyltransferase |
| COL1A1 / COL3A1 | Collagen synthesis and skin biology | Human dermal fibroblasts treated with L-ascorbic acid |
| Immune response genes | Immune function | Immune cell models and immune response assays |
Cancer
The cellular response to L-ascorbic acid has direct cancer relevance. In KRAS-mutant pancreatic cancer cells, L-ascorbic acid preferentially induces DNA damage and cell death. In colorectal cancer cell lines, the response follows a hormetic dose response that depends on SVCT-2 expression. In melanoma cells, the response is modulated by gamma-glutamyltransferase and oxidative stress. These findings suggest that GO:0071298 can be exploited or targeted in cancer research.
Immune function and immune response
Vitamin C and the cellular response to L-ascorbic acid support immune function. Early work established a link between ascorbic acid and the immune response. This makes GO:0071298 relevant to immunology and to conditions where immune function is compromised.
Fibrosis and collagen-related biology
In human dermal fibroblasts, the cellular response to L-ascorbic acid regulates type I and III collagen synthesis in an age-related manner. This links GO:0071298 to skin biology, wound healing and collagen-related disorders.
Acute kidney injury and mitochondrial repair
NAD+ biosynthesis and mitochondrial repair have been studied in acute kidney injury using ultrasound-responsive thylakoid-integrating liposomes. Although this work is not exclusively about L-ascorbic acid, it provides a disease context in which cellular redox and repair responses are relevant to GO:0071298-related biology.
From cellular response to L-ascorbic acid-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does loss of SVCT-2 alter the cellular response to L-ascorbic acid? | SLC23A2 knockout colorectal cancer cell line |
| Does mutant KRAS determine sensitivity to L-ascorbic acid? | KRAS point-mutation or knockout pancreatic cancer cells |
| Does GGT expression modulate oxidative stress after ascorbic acid treatment? | GGT overexpression melanoma cells |
| Does L-ascorbic acid regulate collagen gene expression? | COL1A1 or COL3A1 reporter knock-in dermal fibroblasts |
| Does L-ascorbic acid affect immune cell activity? | Immune cell overexpression or knockout models |
| Does L-ascorbic acid alter stress responses? | Yeast strains with altered L-ascorbic acid production |
How to Study the cellular response to L-ascorbic acid Process
| Method | What It Measures | Typical Application |
|---|---|---|
| RNA-seq | Gene expression changes | Profiling the cellular response to L-ascorbic acid |
| Redox assays | Oxidative stress and antioxidant status | Melanoma cells overexpressing GGT |
| DNA damage assays | DNA damage and repair | KRAS-mutant pancreatic cancer cells |
| Cell viability assays | Hormetic dose response | Colorectal cancer cell lines |
| Collagen synthesis assays | Type I and III collagen production | Human dermal fibroblasts |
| Immune function assays | Immune cell activity | Immune response studies |
| Stress-response assays | Acetic acid stress response | Yeast strains producing L-ascorbic acid |
Transcriptomics and gene expression analysis
RNA-seq and related transcriptomic methods can measure changes in gene expression that occur during the cellular response to L-ascorbic acid. In dermal fibroblasts, collagen gene expression is a readout of the response. In immune cells, expression profiling can reveal immune-related changes.
Redox and oxidative-stress assays
Because the cellular response to L-ascorbic acid involves oxidative-stress modulation, redox assays are essential. Melanoma cells overexpressing gamma-glutamyltransferase provide a model for studying how oxidative stress shapes the response. These assays help distinguish protective from cytotoxic outcomes.
DNA damage and cell viability assays
DNA damage and viability assays are used to study the cytotoxic arm of the response. In KRAS-mutant pancreatic cancer cells, L-ascorbic acid induces DNA damage and cell death. In colorectal cancer cells, dose-response viability assays reveal hormetic effects.
Transport and uptake studies
Transport studies measure how L-ascorbic acid enters cells. SVCT-2 expression levels determine the hormetic dose response in colorectal cancer cells. Uptake assays are therefore central to understanding GO:0071298.
How CRISPR Can Be Used to Study GO:0071298 cellular response to L-ascorbic acid
Knockout
CRISPR knockout can remove genes such as SLC23A2 or GGT to test their causal role in the cellular response to L-ascorbic acid. For example, knocking out SLC23A2 would test whether SVCT-2 is required for the hormetic dose response in colorectal cancer cells. Knocking out GGT would test its role in oxidative-stress modulation in melanoma cells.
Point Mutation
Point mutation models can introduce specific mutations such as KRAS mutations to test whether mutant KRAS determines sensitivity to L-ascorbic acid. These models help dissect the DNA damage response triggered by L-ascorbic acid in pancreatic cancer cells.
Knock-in
Knock-in models can add tags or reporters to genes such as COL1A1 or COL3A1 to monitor collagen synthesis during the cellular response to L-ascorbic acid. Tagged knock-in of transporter genes can also be used to track uptake and localization.
Overexpression
Overexpression models can elevate genes such as GGT to study how increased expression alters the cellular response to ascorbic acid. Overexpression of SVCT-2 can test whether increased uptake enhances the response.
How EDITGENE Supports cellular response to L-ascorbic acid Research
Researchers studying cellular response to L-ascorbic acid-related genes often need to determine whether a candidate gene is causally involved in uptake, redox modulation, gene expression changes or cell-fate outcomes. CRISPR-based models provide a direct way to test these causal relationships in relevant cell types.
Contact EDITGENE today to design your custom CRISPR model for cellular response to L-ascorbic acid research.
Frequently Asked Questions About cellular response to L-ascorbic acid
What is GO:0071298 cellular response to L-ascorbic acid?
GO:0071298 is a biological process Gene Ontology term describing any change in a cell's state or activity caused by an L-ascorbic acid (vitamin C) stimulus.
What genes are involved in the cellular response to L-ascorbic acid?
Genes such as SLC23A2 (SVCT-2), GGT, KRAS, COL1A1 and COL3A1 have been implicated in the cellular response to L-ascorbic acid.
How does vitamin C enter cells?
Vitamin C enters cells through sodium-dependent transporters such as SVCT-2, encoded by SLC23A2.
Does vitamin C kill cancer cells?
In KRAS-mutant pancreatic cancer cells, L-ascorbic acid preferentially induces DNA damage and cell death.
What is the hormetic dose response to L-ascorbic acid?
In colorectal cancer cell lines, the response to L-ascorbic acid depends on SVCT-2 expression and can be protective or cytotoxic depending on dose.
How does vitamin C affect immune function?
Vitamin C supports immune function and the immune response.
Does vitamin C affect collagen synthesis?
Yes, L-ascorbic acid regulates type I and III collagen synthesis in human dermal fibroblasts in an age-related manner.
How is the cellular response to L-ascorbic acid studied?
It is studied using RNA-seq, redox assays, DNA damage assays, viability assays and transport studies.
Can CRISPR be used to study the cellular response to L-ascorbic acid?
Yes, CRISPR knockout, point mutation, knock-in and overexpression models can test causal roles of genes such as SLC23A2, GGT and KRAS.
Why is GO:0071298 important for disease research?
It links vitamin C exposure to cancer cell death, immune function and collagen synthesis, making it relevant to cancer, immunology and skin biology.
Conclusion
GO:0071298, cellular response to L-ascorbic acid, is a context-dependent biological process that determines whether vitamin C protects, reprograms or kills a cell. Its outcomes depend on transporters such as SVCT-2, oxidative-stress modulators such as GGT, oncogenes such as KRAS and cell-type-specific gene expression programs. Studying this process with CRISPR models and multi-omics methods can clarify its role in cancer, immune function and collagen biology.
References
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- 2. Giommarelli C et al.. 2008. Cellular response to oxidative stress and ascorbic acid in melanoma cells overexpressing gamma-glutamyltransferase.. Eur J Cancer 44(5):750-9 PMID: 18314325
- 3. Lei Y et al.. 2025. NAD(+) biosynthesis and mitochondrial repair in acute kidney injury via ultrasound-responsive thylakoid-integrating liposomes.. Nat Biomed Eng 9(10):1740-1757 PMID: 40461655
- 4. Jang HL et al.. 2025. L-Ascorbic acid preferentially kills KRAS mutant pancreatic cancer cells through DNA damage.. Sci Rep 15(1):22705 PMID: 40595145
- 5. Cho S et al.. 2018. Hormetic dose response to (L)-ascorbic acid as an anti-cancer drug in colorectal cancer cell lines according to SVCT-2 expression.. Sci Rep 8(1):11372 PMID: 30054560
- 6. Leibovitz B et al.. 1981. Ascorbic acid and the immune response.. Adv Exp Med Biol 135:1-25 PMID: 7010958
- 7. Dumas M et al.. 1996. Age-related response of human dermal fibroblasts to L-ascorbic acid: study of type I and III collagen synthesis.. C R Acad Sci III 319(12):1127-32 PMID: 9091184
- 8. Martani F et al.. 2013. Different response to acetic acid stress in Saccharomyces cerevisiae wild-type and l-ascorbic acid-producing strains.. Yeast 30(9):365-78 PMID: 23847041
