GO:0002024 diet induced thermogenesis: Mechanism, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0002024 diet induced thermogenesis is the biological process that raises metabolic rate in tissues in response to dietary excess, mediated by sympathetic nervous system signaling.
• The process is distinct from obligatory thermogenesis and is best assessed by calculating the thermic effect of food or by measuring postprandial energy expenditure.
• Key thermogenic tissues include brown adipose tissue and beige adipocytes, where uncoupling protein 1 (UCP1) dissipates energy as heat.
• Diet induced thermogenesis is regulated by leptin, AMPKα/STAT3 signaling, bile acids, and the gut microbiota, linking diet to systemic energy balance.
• Time-restricted feeding and chewing can modulate diet induced thermogenesis and mitigate obesity in preclinical models.
• Dysregulation of diet induced thermogenesis contributes to diet-induced obesity and metabolic disease, making it a target for therapeutic and nutritional interventions.
Description
Diet induced thermogenesis (GO:0002024) is a fundamental biological process that increases metabolic rate in tissues following the detection of dietary excess. This process is achieved via signaling in the sympathetic nervous system and is a component of energy expenditure that helps maintain energy balance after a meal. Researchers study diet induced thermogenesis to understand how organisms handle excess calories and why some individuals are more susceptible to diet-induced obesity. The term is defined in the Gene Ontology as the process that results in increased metabolic rate in tissues of an organism, triggered by the detection of dietary excess, and achieved via signaling in the sympathetic nervous system. Unlike obligatory thermogenesis, which is essential for basic metabolic functions, diet induced thermogenesis is facultative and can be modulated by diet composition, feeding patterns, and environmental factors. Understanding this process is critical for developing strategies to combat obesity and related metabolic disorders.
diet induced thermogenesis At A Glance
| GO ID | GO:0002024 |
|---|---|
| GO term | diet induced thermogenesis |
| Ontology | biological_process |
| Synonym | none |
| Major function | Increases metabolic rate in tissues in response to dietary excess via sympathetic nervous system signaling |
| Trigger | Detection of dietary excess |
| Key tissues | Brown adipose tissue, beige adipocytes, skeletal muscle, liver |
| Related process | Adaptive thermogenesis, energy expenditure, thermic effect of food |
What Is GO:0002024?
In simple terms, diet induced thermogenesis is the body's way of burning extra calories as heat after eating too much. According to the Gene Ontology, GO:0002024 describes the process that results in increased metabolic rate in tissues of an organism, triggered by the detection of dietary excess, and achieved via signaling in the sympathetic nervous system. This definition emphasizes three core elements: a trigger (dietary excess), a response (increased metabolic rate in tissues), and a mechanism (sympathetic nervous system signaling). The process is distinct from physical activity thermogenesis and obligatory thermogenesis, and it is often measured as the thermic effect of food.
Why Is diet induced thermogenesis Important in Cell Biology?
Diet induced thermogenesis is important because it represents a significant component of daily energy expenditure and plays a critical role in energy balance and body weight regulation. When this process is impaired, excess calories are more likely to be stored as fat, contributing to diet-induced obesity and metabolic syndrome. Conversely, enhancing diet induced thermogenesis through dietary compounds, gut microbiota modulation, or feeding schedules has been shown to mitigate obesity in preclinical models. Therefore, understanding the molecular and physiological mechanisms of diet induced thermogenesis is essential for developing effective interventions against obesity and related diseases.
• Contributes to daily energy expenditure and helps prevent weight gain after overeating.
• Dysregulation is linked to diet-induced obesity and metabolic syndrome.
• Serves as a target for nutritional and pharmacological interventions.
• Involves crosstalk between the sympathetic nervous system, adipose tissue, and gut microbiota.
• Can be modulated by feeding patterns such as time-restricted feeding.
• Chewing and oral processing can influence postprandial diet induced thermogenesis.
• Genetic variations, such as RSPO1 mutations, can repress beige adipocyte thermogenesis and contribute to adiposity.
• Provides a measurable physiological parameter for clinical and preclinical studies.
• Helps explain inter-individual differences in weight gain on high-calorie diets.
• Offers a mechanistic link between diet, gut microbiota, and host metabolism.
What Happens During diet induced thermogenesis?
Detection of Dietary Excess
In simple terms: The body senses that you have eaten more calories than needed.
The process begins when the organism detects dietary excess, which can occur through nutrient sensors, gut hormones, and neural signals. This detection triggers a cascade of events that ultimately increases metabolic rate in tissues. The sympathetic nervous system is activated as a key mediator of this response.
Sympathetic Nervous System Activation
In simple terms: Nerves release signals that tell tissues to burn more energy.
Following the detection of dietary excess, the sympathetic nervous system is activated, leading to the release of norepinephrine in thermogenic tissues such as brown adipose tissue. This signaling promotes increased metabolic rate and heat production. The process is achieved via signaling in the sympathetic nervous system, as defined in GO:0002024.
Thermogenesis in Brown and Beige Adipocytes
In simple terms: Special fat cells burn calories to produce heat.
Brown adipose tissue and beige adipocytes are key effectors of diet induced thermogenesis. In these cells, uncoupling protein 1 (UCP1) dissipates the proton gradient across the inner mitochondrial membrane, generating heat instead of ATP. Beige adipocyte reconstruction and thermogenesis can be promoted by factors such as Panax notoginseng saponins via leptin-mediated AMPKα/STAT3 signaling.
Modulation by Gut Microbiota and Bile Acids
In simple terms: Gut bacteria influence how much energy you burn after eating.
The gut microbiota can modulate diet induced thermogenesis through metabolites such as bile acids. For example, Shengmai San formula alleviates high-fat diet-induced obesity in mice through gut microbiota-derived bile acid promotion of M2 macrophage polarization and thermogenesis. Similarly, Panax notoginseng saponins modulate the gut microbiota to promote thermogenesis and beige adipocyte reconstruction.
Integration with Feeding Patterns
In simple terms: When you eat can affect how many calories you burn.
Feeding patterns such as time-restricted feeding can influence diet induced thermogenesis and mitigate obesity through adipocyte thermogenesis. Chewing also increases postprandial diet induced thermogenesis, highlighting the role of oral processing in energy expenditure. These findings demonstrate that diet induced thermogenesis is not fixed but can be modulated by behavioral and dietary factors.
Key Genes Involved in GO:0002024 diet induced thermogenesis
The following genes and proteins are involved in diet induced thermogenesis, based on published literature.
| Gene | Major Role | Research Relevance |
|---|---|---|
| UCP1 | Uncoupling protein 1 dissipates proton gradient to produce heat in brown/beige adipocytes | Central effector of thermogenesis; target for obesity studies |
| LEP | Leptin mediates AMPKα/STAT3 signaling to promote thermogenesis | Links energy status to thermogenesis; studied in diet-induced obesity |
| PRKAA1 | AMPKα catalytic subunit involved in leptin-mediated thermogenesis | Energy sensor; target for modulating thermogenesis |
| STAT3 | Transcription factor downstream of leptin signaling | Mediates transcriptional responses in thermogenesis |
| RSPO1 | Human RSPO1 mutation represses beige adipocyte thermogenesis | Genetic link to diet-induced adiposity |
| ADRB3 | Beta-3 adrenergic receptor mediates sympathetic signaling in thermogenesis | Target for sympathetic modulation of thermogenesis |
| PPARGC1A | PGC-1α coactivates thermogenic gene programs | Master regulator of mitochondrial biogenesis and thermogenesis |
| PRDM16 | Transcriptional coregulator of brown/beige adipocyte identity | Key determinant of thermogenic capacity |
| CIDEA | Lipid droplet protein involved in thermogenesis | Marker of brown adipocytes |
| DIO2 | Type 2 deiodinase activates thyroid hormone to enhance thermogenesis | Local regulator of thyroid hormone action in thermogenesis |
| FGF21 | Fibroblast growth factor 21 promotes thermogenesis | Hormone linked to energy expenditure |
| BMP8B | Bone morphogenetic protein 8b regulates thermogenesis | Signaling molecule in brown fat activation |
| NRF1 | Nuclear respiratory factor 1 regulates mitochondrial genes | Transcription factor for mitochondrial function |
| TFAM | Mitochondrial transcription factor A supports mitochondrial DNA | Essential for mitochondrial biogenesis |
| COX5A | Cytochrome c oxidase subunit involved in oxidative phosphorylation | Marker of mitochondrial oxidative capacity |
| ATP5F1A | ATP synthase subunit; related to energy metabolism | Component of oxidative phosphorylation |
| ACOX1 | Peroxisomal acyl-CoA oxidase involved in fatty acid oxidation | Supports substrate oxidation for thermogenesis |
| CPT1B | Carnitine palmitoyltransferase 1B for fatty acid oxidation | Rate-limiting for mitochondrial fatty acid import |
How Is diet induced thermogenesis Regulated?
Diet induced thermogenesis is regulated at multiple levels, including sympathetic nervous system activity, hormonal signals such as leptin, and cellular energy sensors like AMPKα. Leptin-mediated AMPKα/STAT3 signaling promotes thermogenesis and beige adipocyte reconstruction in diet-induced obesity. Additionally, gut microbiota-derived bile acids can promote M2 macrophage polarization and thermogenesis. Feeding patterns such as time-restricted feeding also regulate adipocyte thermogenesis and mitigate obesity. These regulatory mechanisms highlight the integration of systemic and local signals in controlling diet induced thermogenesis.
diet induced thermogenesis and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| RSPO1 | Diet-induced adiposity | Knock-in mouse model of human RSPO1 mutation |
| UCP1 | Obesity and metabolic efficiency | UCP1 knockout mouse |
| LEP | Obesity and thermogenesis regulation | Leptin-deficient ob/ob mouse |
| PRKAA1 | Energy balance and thermogenesis | AMPKα knockout or knock-in models |
| STAT3 | Leptin signaling and thermogenesis | STAT3 conditional knockout in adipose tissue |
Diet-Induced Obesity
Impaired diet induced thermogenesis is a contributing factor to diet-induced obesity, as reduced energy expenditure favors fat accumulation. Human RSPO1 mutation represses beige adipocyte thermogenesis and contributes to diet-induced adiposity, demonstrating a genetic link. Enhancing thermogenesis through dietary compounds or feeding schedules can mitigate obesity in preclinical models.
Metabolic Syndrome and Type 2 Diabetes
Dysregulation of diet induced thermogenesis is associated with metabolic syndrome and type 2 diabetes, as both conditions involve defects in energy balance and substrate oxidation. Interventions that promote thermogenesis, such as time-restricted feeding, may improve metabolic parameters. However, the precise contribution of diet induced thermogenesis to these diseases requires further investigation.
Potential Role in Cancer Cachexia
Although not extensively studied, altered thermogenesis may contribute to cancer cachexia, a condition characterized by involuntary weight loss and increased energy expenditure. The relationship between diet induced thermogenesis and cancer cachexia remains speculative and requires further research.
From diet induced thermogenesis-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does gene X regulate diet induced thermogenesis? | Knockout mouse for gene X |
| Does a human mutation in gene X affect thermogenesis? | Point-mutation knock-in mouse |
| Can overexpression of gene X enhance thermogenesis? | Transgenic overexpression mouse |
| Where is protein X expressed during thermogenesis? | Tagged knock-in reporter mouse |
| What is the role of gene X in beige adipocyte reconstruction? | Adipose-specific knockout or overexpression |
| How does gut microbiota modulate thermogenesis via gene X? | Germ-free or antibiotic-treated mouse models |
How to Study the diet induced thermogenesis Process
| Method | What It Measures | Typical Application |
|---|---|---|
| Indirect calorimetry | Oxygen consumption and CO2 production | Assessing metabolic rate and thermogenesis |
| Calculated diet induced thermogenesis | Postprandial energy expenditure minus obligatory thermogenesis | Quantifying thermic effect of food in mice |
| RNA-seq | Global gene expression | Identifying thermogenic gene programs |
| qPCR | Expression of specific genes | Validating UCP1 and other markers |
| 16S rRNA sequencing | Gut microbiota composition | Linking microbiota to thermogenesis |
| Metabolomics | Small molecule metabolites | Identifying bile acids and other modulators |
| Histology | Tissue morphology and lipid droplets | Detecting beige adipocyte reconstruction |
| Western blot | Protein expression and signaling | Measuring AMPKα/STAT3 activation |
Calculating Diet Induced Thermogenesis in Mice
Diet induced thermogenesis can be calculated in mice by measuring postprandial energy expenditure and subtracting obligatory thermogenesis, as described in standardized protocols. This method allows researchers to quantify the thermic effect of food and assess genetic or pharmacological interventions.
Indirect Calorimetry
Indirect calorimetry measures oxygen consumption and carbon dioxide production to estimate metabolic rate and substrate oxidation. It is widely used to assess diet induced thermogenesis in rodents and humans. This technique can be combined with feeding challenges to evaluate the thermic effect of food.
Gene Expression Analysis
RNA-seq and quantitative PCR can measure the expression of thermogenic genes such as UCP1, PRDM16, and PPARGC1A in brown and beige adipocytes. These methods help identify molecular changes associated with diet induced thermogenesis.
Microbiota and Metabolite Profiling
16S rRNA sequencing and metabolomics can reveal how gut microbiota and their metabolites, such as bile acids, influence diet induced thermogenesis. These approaches are useful for studying the gut-adipose axis.
How CRISPR Can Be Used to Study GO:0002024 diet induced thermogenesis
Knockout
CRISPR knockout models are used to delete genes such as UCP1 or LEP to determine their causal role in diet induced thermogenesis. These models help researchers assess whether loss of a gene impairs thermogenesis and promotes diet-induced obesity.
Point Mutation
Point mutation knock-in models can replicate human genetic variants, such as RSPO1 mutations, to study their impact on beige adipocyte thermogenesis and diet-induced adiposity. These models provide insights into gene-diet interactions.
Knock-in
Knock-in of reporter tags or humanized sequences allows visualization and functional analysis of thermogenic proteins in vivo. For example, tagging UCP1 with a fluorescent protein enables tracking of brown adipocyte dynamics.
Overexpression
CRISPR activation or transgenic overexpression can enhance the expression of thermogenic genes to test whether increased activity protects against diet-induced obesity. Overexpression of PRDM16 or PPARGC1A in adipose tissue is used to boost thermogenesis.
How EDITGENE Supports diet induced thermogenesis Research
Researchers studying diet induced thermogenesis-related genes often need to determine whether a candidate gene is causally involved in the process or merely correlated with it. This requires precise genetic models that can knockout, mutate, knock-in, or overexpress the gene of interest in relevant tissues. EDITGENE provides a comprehensive suite of CRISPR-based services to accelerate such discoveries.
Contact EDITGENE today to design your custom CRISPR model for diet induced thermogenesis research.
Frequently Asked Questions About diet induced thermogenesis
What is diet induced thermogenesis?
Diet induced thermogenesis is the process that increases metabolic rate in tissues after eating, triggered by dietary excess and mediated by the sympathetic nervous system.
What is GO:0002024?
GO:0002024 is the Gene Ontology identifier for diet induced thermogenesis, a biological process.
What genes are involved in diet induced thermogenesis?
Key genes include UCP1, LEP, PRKAA1, STAT3, RSPO1, and PPARGC1A, among others.
How is diet induced thermogenesis measured?
It is measured by indirect calorimetry and calculated as postprandial energy expenditure minus obligatory thermogenesis.
What is the role of UCP1 in diet induced thermogenesis?
UCP1 uncouples oxidative phosphorylation to produce heat in brown and beige adipocytes.
Can diet induced thermogenesis be enhanced to treat obesity?
Preclinical studies show that enhancing thermogenesis through diet, microbiota modulation, or time-restricted feeding can mitigate obesity.
What is the difference between diet induced thermogenesis and adaptive thermogenesis?
Diet induced thermogenesis is specifically triggered by dietary excess, while adaptive thermogenesis can also be induced by cold.
How does the gut microbiota affect diet induced thermogenesis?
Gut microbiota can modulate thermogenesis via metabolites such as bile acids, which promote M2 macrophage polarization and thermogenesis.
Does chewing affect diet induced thermogenesis?
Yes, chewing increases postprandial diet induced thermogenesis.
What animal models are used to study diet induced thermogenesis?
Mice are commonly used, including knockout, knock-in, and transgenic models.
Conclusion
Diet induced thermogenesis (GO:0002024) is a critical biological process that links dietary excess to increased metabolic rate through sympathetic nervous system signaling. Its dysregulation contributes to diet-induced obesity and metabolic disease, while its enhancement offers therapeutic potential. Understanding the genes and mechanisms involved, such as UCP1, leptin, and AMPKα/STAT3 signaling, is essential for developing effective interventions. Continued research using advanced CRISPR models and multi-omics approaches will further elucidate this process and its role in human health.
References
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- 2. Xu Y et al.. 2020. Panax notoginseng saponins modulate the gut microbiota to promote thermogenesis and beige adipocyte reconstruction via leptin-mediated AMPKα/STAT3 signaling in diet-induced obesity.. Theranostics 10(24):11302-11323 PMID: 33042284
- 3. Nedergaard J et al.. 2022. Diet-Induced Thermogenesis: Principles and Pitfalls.. Methods Mol Biol 2448:177-202 PMID: 35167098
- 4. Wang Z et al.. 2024. Shengmai San formula alleviates high-fat diet-induced obesity in mice through gut microbiota-derived bile acid promotion of M2 macrophage polarization and thermogenesis.. Phytomedicine 133:155938 PMID: 39163753
- 5. Yamazaki T. 2023. Calculating Diet-Induced Thermogenesis in Mice.. Methods Mol Biol 2662:125-133 PMID: 37076676
- 6. Hamada Y et al.. 2021. Chewing increases postprandial diet-induced thermogenesis.. Sci Rep 11(1):23714 PMID: 34887466
- 7. Sun Y et al.. 2023. Human RSPO1 Mutation Represses Beige Adipocyte Thermogenesis and Contributes to Diet-Induced Adiposity.. Adv Sci (Weinh) 10(12):e2207152 PMID: 36755192
- 8. Hepler C et al.. 2022. Time-restricted feeding mitigates obesity through adipocyte thermogenesis.. Science 378(6617):276-284 PMID: 36264811
