GO:0019605 butyrate metabolic process: Microbiota-Gut Axis, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0019605 butyrate metabolic process describes the chemical reactions and pathways involving butyrate, the anion of butyric acid, a saturated unbranched short-chain fatty acid.
• Butyrate is produced primarily by bacterial fermentation of dietary fiber in the colon and is a major energy source for colonocytes, with concentrations in the large intestine reaching 10-30 mM.
• Beyond energy, butyrate acts as a histone deacetylase inhibitor and signaling molecule that promotes regulatory T-cell generation and immune homeostasis.
• Butyrate improves insulin sensitivity and increases energy expenditure in mice, linking this metabolic process to systemic metabolic regulation.
• Microbiota-derived butyrate can potentiate CAR-T cell therapy by metabolic reprogramming and extracellular matrix remodeling, highlighting its therapeutic potential.
• Dysregulation of butyrate metabolism is implicated in inflammatory bowel disease, colorectal cancer, metabolic fatty liver disease, and neuropsychiatric disorders.
Description
Butyrate metabolic process (GO:0019605) encompasses the chemical reactions and pathways involving butyrate, the anion of butyric acid (butanoic acid), a saturated, unbranched aliphatic acid. This short-chain fatty acid is generated predominantly through bacterial fermentation of dietary fibers in the large intestine, where it reaches millimolar concentrations and serves as a primary energy substrate for colonocytes. The term also covers the utilization, interconversion, and signaling roles of butyrate in host tissues, making it a central node in microbiome-host metabolic crosstalk. Researchers study this process because butyrate influences diverse physiological functions, from gut barrier integrity to immune regulation and energy homeostasis. Its dual role as both a metabolite and a signaling molecule has positioned butyrate metabolic process at the intersection of microbiology, immunology, and metabolic disease.
butyrate metabolic process At A Glance
| GO ID | GO:0019605 |
|---|---|
| GO term | butyrate metabolic process |
| Ontology | biological_process |
| Synonym | butanoic acid metabolic process; butanoic acid metabolism; butyrate metabolism; butyric acid metabolic process; butyric acid metabolism |
| Major function | Production, utilization, and signaling of butyrate as a short-chain fatty acid |
| Definition | The chemical reactions and pathways involving any butyrate, the anions of butyric acid (butanoic acid), a saturated, unbranched aliphatic acid. |
| Related metabolites | Butyrate, butyryl-CoA, acetoacetate, beta-hydroxybutyrate |
| Key organisms | Commensal gut bacteria (e.g., Faecalibacterium prausnitzii, Roseburia spp.) and host cells |
| Physiological roles | Colonocyte energy source, histone deacetylase inhibition, immune modulation, energy homeostasis |
What Is GO:0019605?
In our own words, GO:0019605 butyrate metabolic process refers to the sum of biochemical reactions and pathways that produce, transform, or utilize butyrate, the conjugate base of butyric acid. This includes fermentation pathways in commensal bacteria that synthesize butyrate from dietary fiber, as well as host pathways that oxidize butyrate for energy, incorporate it into lipids, or use it as a substrate for post-translational modifications and signaling. The term is agnostic to organism, covering both microbial and host contributions to butyrate turnover.
Why Is butyrate metabolic process Important in Cell Biology?
Butyrate metabolic process is critically important because butyrate is a major product of gut microbial fermentation and a key mediator of host-microbiome interactions. It serves as the primary energy source for colonic epithelial cells, helps maintain gut barrier function, and exerts anti-inflammatory effects by promoting regulatory T-cell differentiation. Dysregulation of butyrate production or signaling is associated with inflammatory bowel diseases, colorectal cancer, obesity, insulin resistance, and even neurological disorders. Understanding this process is therefore essential for developing microbiome-targeted therapies, metabolic interventions, and cancer immunotherapies.
• Butyrate is the preferred energy substrate for colonocytes, supporting gut barrier integrity.
• It promotes peripheral regulatory T-cell generation, linking metabolism to immune tolerance.
• Butyrate improves insulin sensitivity and increases energy expenditure in mice.
• It acts as a histone deacetylase inhibitor, influencing gene expression epigenetically.
• Microbiota-derived butyrate can enhance CAR-T cell therapy efficacy.
• Butyrate metabolism is implicated in metabolic fatty liver disease and can activate SIRT1 signaling.
• It plays a role in the microbiota-gut-brain axis and neuropharmacology.
• Dysregulated butyrate metabolism is observed in colorectal cancer and inflammatory bowel disease.
• Butyrate supplementation has been explored for treating obesity and diabetes.
• Understanding butyrate metabolism informs probiotic and prebiotic strategies for health.
What Happens During butyrate metabolic process?
Microbial fermentation and butyrate synthesis
In simple terms: Gut bacteria break down fiber and turn it into butyrate.
Butyrate is primarily produced by anaerobic fermentation of dietary fiber in the colon by commensal bacteria such as Faecalibacterium prausnitzii and Roseburia spp. These bacteria convert carbohydrates into short-chain fatty acids, with butyrate being a major product. The fermentation process involves multiple enzymatic steps, including glycolysis, acetyl-CoA production, and the butyryl-CoA pathway. The resulting butyrate is released into the colonic lumen and absorbed by colonocytes.
Butyrate uptake and oxidation in colonocytes
In simple terms: Colon cells take up butyrate and burn it for energy.
Once absorbed, butyrate enters colonocytes via monocarboxylate transporters and is rapidly oxidized through beta-oxidation and the TCA cycle to generate ATP. This oxidation consumes oxygen and stabilizes hypoxia-inducible factor, contributing to the low-oxygen environment of the healthy colon. Butyrate provides up to 70% of the energy needs of colonocytes, making it essential for epithelial homeostasis.
Histone deacetylase inhibition and epigenetic regulation
In simple terms: Butyrate can change how genes are turned on or off by affecting DNA packaging.
Butyrate acts as a histone deacetylase (HDAC) inhibitor, leading to hyperacetylation of histones and altered gene expression. This epigenetic modulation affects genes involved in cell cycle regulation, apoptosis, and immune responses. Through HDAC inhibition, butyrate promotes the differentiation of regulatory T cells and suppresses inflammatory cytokine production, thereby maintaining immune homeostasis.
Butyrate as a signaling molecule in host metabolism
In simple terms: Butyrate sends signals that affect how the body uses energy.
Beyond its role as an energy source, butyrate functions as a signaling molecule by activating G-protein-coupled receptors such as GPR41 and GPR43, and by inhibiting HDACs. These actions influence insulin sensitivity, energy expenditure, and lipid metabolism. In mice, butyrate supplementation improves insulin sensitivity and increases energy expenditure, partly through enhanced mitochondrial function in brown adipose tissue and muscle.
Butyrate in immune modulation and cancer therapy
In simple terms: Butyrate helps the immune system fight cancer and reduce inflammation.
Butyrate promotes the generation of peripheral regulatory T cells, which are crucial for immune tolerance and preventing autoimmunity. In cancer, microbiota-derived butyrate can potentiate CAR-T cell therapy by reprogramming T-cell metabolism and remodeling the extracellular matrix, leading to improved anti-tumor responses. These findings highlight the therapeutic potential of targeting butyrate metabolism in immunotherapy.
Key Genes Involved in GO:0019605 butyrate metabolic process
The following genes and proteins are key players in butyrate metabolic process, spanning microbial synthesis, host transport, oxidation, and signaling pathways.
| Gene | Major Role | Research Relevance |
|---|---|---|
| HDAC1 | Histone deacetylase targeted by butyrate | Epigenetic regulation; cancer and inflammation models |
| HDAC2 | Histone deacetylase inhibited by butyrate | Gene expression regulation; neurobiology |
| HDAC3 | Histone deacetylase involved in butyrate response | Metabolic and immune regulation |
| SLC16A1 | Monocarboxylate transporter 1; butyrate uptake | Colonocyte metabolism; drug transport |
| SLC16A3 | Monocarboxylate transporter 4; butyrate transport | Cancer metabolism; lactate shuttle |
| ACAT1 | Acetyl-CoA acetyltransferase; butyrate oxidation | Ketone body metabolism; energy homeostasis |
| ACAT2 | Acetyl-CoA acetyltransferase; butyrate metabolism | Lipid synthesis; liver metabolism |
| HMGCS2 | HMG-CoA synthase 2; ketogenesis from butyrate | Metabolic liver disease; fasting response |
| PPARA | Peroxisome proliferator-activated receptor alpha | Fatty acid oxidation; energy expenditure |
| FFAR2 | Free fatty acid receptor 2 (GPR43); butyrate receptor | Immune regulation; gut homeostasis |
| FFAR3 | Free fatty acid receptor 3 (GPR41); butyrate receptor | Energy metabolism; sympathetic nervous system |
| SIRT1 | NAD-dependent deacetylase; butyrate-activated | Metabolic fatty liver; aging |
| FOXP3 | Regulatory T-cell transcription factor | Immune tolerance; autoimmunity |
| IL10 | Anti-inflammatory cytokine induced by butyrate | Inflammatory bowel disease; immune regulation |
| TNF | Pro-inflammatory cytokine suppressed by butyrate | Inflammation; cancer |
| MSLN | Mesothelin; target for CAR-T therapy potentiated by butyrate | Cancer immunotherapy |
| GPR109A | Butyrate receptor; niacin receptor | Colon cancer; inflammation |
How Is butyrate metabolic process Regulated?
Butyrate metabolic process is regulated at multiple levels. Microbial butyrate production is influenced by dietary fiber intake, gut microbiota composition, and host factors such as mucus secretion and transit time. In host cells, butyrate uptake and oxidation are regulated by the expression of monocarboxylate transporters and enzymes of beta-oxidation, which are under the control of metabolic sensors like AMPK and PPARalpha. Butyrate itself modulates gene expression through HDAC inhibition and G-protein-coupled receptor signaling, creating feedback loops that affect its own metabolism and downstream effects. Additionally, butyrate can activate SIRT1 signaling, which further regulates metabolic and inflammatory pathways.
butyrate metabolic process and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| HDAC1 | Colorectal cancer; inflammation | HDAC1 knockout colon cancer cell lines |
| FFAR2 | Inflammatory bowel disease; immune regulation | FFAR2 knockout mice; colitis models |
| SIRT1 | Metabolic fatty liver disease | SIRT1 knockout hepatocytes; high-fat diet mice |
| FOXP3 | Autoimmunity; regulatory T-cell deficiency | FOXP3 knock-in reporter mice; T-cell differentiation assays |
| MSLN | Cancer immunotherapy | MSLN CAR-T cells; xenograft tumor models |
Butyrate metabolism in inflammatory bowel disease and colorectal cancer
Altered butyrate production and utilization are observed in inflammatory bowel diseases (IBD) and colorectal cancer (CRC). In IBD, reduced butyrate levels impair colonocyte energy supply and barrier function, exacerbating inflammation. In CRC, butyrate exhibits dual effects: it can promote apoptosis and inhibit proliferation in normal colonocytes, but may also support tumor growth under certain conditions. The role of butyrate in CRC is context-dependent, influenced by genetic background and microbiota composition.
Butyrate metabolism and metabolic disorders
Butyrate improves insulin sensitivity and increases energy expenditure in mice, suggesting a protective role against obesity and type 2 diabetes. In metabolic fatty liver disease, soybean genistin-driven gut microbiota-derived butyrate synthesis activates SIRT1 signaling to ameliorate hepatic steatosis. These findings highlight butyrate metabolism as a therapeutic target for metabolic syndrome.
Butyrate metabolism in neuropsychiatric disorders
The microbiota-gut-brain axis is modulated by butyrate, which influences neuroinflammation, neurotransmitter synthesis, and behavior. Butyrate's HDAC inhibitory activity affects gene expression in the brain, and dysregulated butyrate metabolism has been implicated in depression, anxiety, and neurodegenerative diseases. However, the exact mechanisms and causal relationships require further investigation.
Butyrate metabolism in cancer immunotherapy
Microbiota-derived butyrate potentiates MSLN CAR-T cell therapy by metabolic reprogramming and extracellular matrix remodeling, enhancing anti-tumor efficacy. This suggests that modulating butyrate levels could improve adoptive cell therapy outcomes. However, the optimal timing and dosage of butyrate modulation remain to be determined.
From butyrate metabolic process-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does gene X regulate butyrate production? | Knockout of candidate genes in gut bacteria or host cells |
| Does a point mutation in gene Y affect butyrate sensitivity? | Point mutation knock-in cell lines |
| How does butyrate affect gene expression? | Overexpression of HDACs or butyrate receptors |
| Does butyrate modulate immune cell function? | Knock-in of FOXP3 reporter; T-cell differentiation |
| What is the role of butyrate in cancer therapy? | Knockout of MSLN in CAR-T cells; xenograft models |
| How does butyrate influence metabolism? | Overexpression of SIRT1 or PPARA in hepatocytes |
How to Study the butyrate metabolic process Process
| Method | What It Measures | Typical Application |
|---|---|---|
| GC-MS | Butyrate concentration | Fecal and serum butyrate quantification |
| LC-MS | Butyrate and metabolites | Metabolic flux analysis |
| RNA-seq | Gene expression changes | Butyrate-induced transcriptional responses |
| ChIP-seq | Histone acetylation | HDAC inhibition by butyrate |
| 16S rRNA sequencing | Microbiota composition | Butyrate-producing bacteria identification |
| CRISPR knockout screen | Gene essentiality | Butyrate sensitivity pathways |
| Western blot | Protein expression | HDAC and signaling proteins |
Metabolomics and butyrate quantification
Gas chromatography-mass spectrometry (GC-MS) and liquid chromatography-mass spectrometry (LC-MS) are used to quantify butyrate levels in biological samples such as feces, serum, and cell culture supernatants. These methods enable researchers to assess butyrate production and consumption rates, providing insights into metabolic flux.
Transcriptomics and epigenomics
RNA sequencing (RNA-seq) and chromatin immunoprecipitation sequencing (ChIP-seq) for histone acetylation are employed to study how butyrate alters gene expression and chromatin state. These approaches reveal the downstream effects of butyrate-mediated HDAC inhibition and identify target genes.
Microbiome analysis
16S rRNA gene sequencing and metagenomics are used to characterize gut microbiota composition and identify butyrate-producing bacteria. These methods help link specific microbial taxa to butyrate metabolic process and host health.
CRISPR screening and functional genomics
CRISPR-Cas9 knockout screens can identify genes that regulate butyrate sensitivity or metabolism. For example, genome-wide screens in colon cancer cells treated with butyrate can uncover genes essential for butyrate-induced apoptosis or HDAC inhibition.
How CRISPR Can Be Used to Study GO:0019605 butyrate metabolic process
Knockout
CRISPR knockout of candidate genes such as HDAC1, FFAR2, or SLC16A1 can reveal their roles in butyrate metabolism and signaling. For example, knocking out FFAR2 in immune cells can test its requirement for butyrate-mediated regulatory T-cell induction.
Point Mutation
Introducing point mutations in genes like SIRT1 or PPARA can mimic disease-associated variants and assess their impact on butyrate response. This approach helps dissect the functional consequences of specific genetic alterations.
Knock-in
Knock-in of reporter genes such as FOXP3-GFP allows real-time monitoring of regulatory T-cell differentiation in response to butyrate. Tagged knock-in of metabolic enzymes can facilitate protein interaction studies.
Overexpression
Overexpression of butyrate transporters or receptors can enhance cellular sensitivity to butyrate, enabling studies of downstream signaling. For instance, overexpressing SLC16A1 in colonocytes can increase butyrate uptake and oxidation.
How EDITGENE Supports butyrate metabolic process Research
Researchers studying butyrate metabolic process-related genes often need to determine whether a candidate gene is causally involved in butyrate production, sensing, or downstream effects. EDITGENE provides comprehensive CRISPR-based services to create precisely engineered cell models for such investigations.
Contact EDITGENE today to design your custom CRISPR model for butyrate metabolic process research.
Frequently Asked Questions About butyrate metabolic process
What is butyrate metabolic process?
Butyrate metabolic process (GO:0019605) refers to the chemical reactions and pathways involving butyrate, a short-chain fatty acid produced by gut bacteria and used by host cells for energy and signaling.
What genes are involved in butyrate metabolic process?
Key genes include HDAC1, HDAC2, SLC16A1, FFAR2, FFAR3, SIRT1, and PPARA, which mediate butyrate transport, sensing, and downstream effects.
How is butyrate produced in the gut?
Butyrate is produced by bacterial fermentation of dietary fiber in the colon, primarily by species such as Faecalibacterium prausnitzii and Roseburia spp..
What are the health benefits of butyrate?
Butyrate improves insulin sensitivity, increases energy expenditure, promotes regulatory T-cell generation, and supports gut barrier function.
How does butyrate affect cancer?
Butyrate can inhibit histone deacetylases and modulate gene expression, with context-dependent effects in colorectal cancer and potential to enhance CAR-T therapy.
Can butyrate be used as a therapy?
Butyrate supplementation has shown benefits in metabolic disorders and is being explored in cancer immunotherapy, but optimal dosing and delivery remain under investigation.
What diseases are linked to butyrate metabolism?
Inflammatory bowel disease, colorectal cancer, metabolic fatty liver disease, obesity, diabetes, and neuropsychiatric disorders have been associated with altered butyrate metabolism.
How do researchers study butyrate metabolism?
Methods include GC-MS for butyrate quantification, RNA-seq for gene expression, ChIP-seq for histone acetylation, and CRISPR screens for functional genomics.
What is the role of SIRT1 in butyrate metabolism?
Butyrate can activate SIRT1 signaling, which ameliorates metabolic fatty liver disease and regulates inflammation.
What CRISPR models are available for butyrate research?
EDITGENE offers knockout, point mutation, knock-in, and overexpression cell models, as well as CRISPR library screening and bioinformatics services for butyrate metabolism studies.
Conclusion
Butyrate metabolic process (GO:0019605) is a fundamental biological process at the interface of gut microbiota and host physiology. It encompasses the production, utilization, and signaling of butyrate, a short-chain fatty acid with profound effects on energy metabolism, immune regulation, and disease. Research into this process has revealed its importance in conditions ranging from inflammatory bowel disease to cancer and metabolic disorders. Continued investigation using advanced CRISPR models and multi-omics approaches will further elucidate the mechanisms and therapeutic potential of butyrate metabolism.
References
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- 3. Stilling RM et al.. 2016. The neuropharmacology of butyrate: The bread and butter of the microbiota-gut-brain axis?. Neurochem Int 99:110-132 PMID: 27346602
- 4. Gao Z et al.. 2009. Butyrate improves insulin sensitivity and increases energy expenditure in mice.. Diabetes 58(7):1509-17 PMID: 19366864
- 5. Chen J et al.. 2025. Microbiota-derived butyrate potentiates MSLN CAR-T cell therapy by metabolic reprogramming and extracellular matrix remodeling.. Biomed Pharmacother 192:118560 PMID: 40967080
- 6. Cummings JH et al.. 1987. Short chain fatty acids in human large intestine, portal, hepatic and venous blood.. Gut 28(10):1221-7 PMID: 3678950
- 7. Yi G et al.. 2025. Soybean genistin-driven gut microbiota-derived butyrate synthesis activates the SIRT1 signaling pathway to ameliorate metabolic fatty liver.. Free Radic Biol Med 239:336-351 PMID: 40752635
- 8. Zhang L et al.. 2021. Butyrate in Energy Metabolism: There Is Still More to Learn.. Trends Endocrinol Metab 32(3):159-169 PMID: 33461886
