Fructose consumed as a single bolus rather than gradually: molecular mechanisms & dependencies

How nutrients influence it

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Human evidence only

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What it does

Every recorded relationship this component is part of, grouped by its role. Plain wording comes first; the technical statement follows.

Recorded relationships

What it acts on

When fructose is consumed more gradually to facilitate its absorption in the small intestine, both citrate cleavage in hepatocytes and microorganism-derived acetate contribute to lipogenesis, whereas the lipogenic transcriptional program is activated in response to fructose independently of acetyl-CoA metabolism, revealing a two-pronged mechanism in which fructolysis within hepatocytes provides the signal to express lipogenic genes while microbial acetate feeds the lipogenic acetyl-CoA pools.
Fructose consumed as a single bolus rather than gradually → De novo lipogenesis source_derived_draftungraded
Experimental context and source evidence
evidence_span
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experimental_model
In vivo isotope tracing in mice with liver-specific Acly deletion, microbiota depletion and hepatic ACSS2 silencing
exposure
Bolus or gradual dietary fructose, with genetic, microbial and dose-rate manipulation
limitations
Three independent manipulations converge on the same route. Its dominance depends on how fast the fructose is eaten, and the human contribution is not established here.
nutrient_topic
Acetic acid research collection; topical membership is not evidence of a direct clinical effect, and the ingested acid is recorded separately from the circulating acetate anion. · Acetic acid
organism
Mouse
plain_language
How fast the sugar is eaten decides which of the two routes supplies the carbon; the signal that switches the genes on is separate from either.
primary_references
[acetate-p32214246] Dietary fructose feeds hepatic lipogenesis via microbiota-derived acetate. (2020). https://pubmed.ncbi.nlm.nih.gov/32214246/ DOI: 10.1038/s41586-020-2101-7
tissue_or_cell_type
Liver and gut
Acetic acid: the ingested acid, the receptors acetate binds, the acetyl-CoA it becomes, and the acetyl groups that reach histones (2026-09-21) · lines 576–587
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · In vivo isotope tracing in mice with liver-specific Acly deletion, microbiota depletion and hepatic ACSS2 silencing · source_derived_draft · unverified_draft
### acetate-intake-rate-decides When fructose is consumed more gradually to facilitate its absorption in the small intestine, both citrate cleavage in hepatocytes and microorganism-derived acetate contribute to lipogenesis, whereas the lipogenic transcriptional program is activated in response to fructose independently of acetyl-CoA metabolism, revealing a two-pronged mechanism in which fructolysis within hepatocytes provides the signal to express lipogenic genes while microbial acetate feeds the lipogenic acetyl-CoA pools. Condition category: normal nutrient_topic: Acetic acid research collection; topical membership is not evidence of a direct clinical effect, and the ingested acid is recorded separately from the circulating acetate anion. plain_language: How fast the sugar is eaten decides which of the two routes supplies the carbon; the signal that switches the genes on is separate from either. organism: Mouse tissue_or_cell_type: Liver and gut experimental_model: In vivo isotope tracing in mice with liver-specific Acly deletion, microbiota depletion and hepatic ACSS2 silencing limitations: Three independent manipulations converge on the same route. Its dominance depends on how fast the fructose is eaten, and the human contribution is not established here. exposure: Bolus or gradual dietary fructose, with genetic, microbial and dose-rate manipulation evidence_span: {"source_cache": "artifacts/acetate-research/32214246.abstract.txt", "locator": "Indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "302837a9fc88030dce2c74e65053f8baae65863245d2d811ccbb3231b95a99e1", "start_char": 0, "end_char": 1782, "text_sha256": "302837a9fc88030dce2c74e65053f8baae65863245d2d811ccbb3231b95a99e1"} [acetate-p32214246] Dietary fructose feeds hepatic lipogenesis via microbiota-derived acetate. (2020). https://pubmed.ncbi.nlm.nih.gov/32214246/ DOI: 10.1038/s41586-020-2101-7
Complete structured claim and evidence

Where it participates (unsigned role)

Dietary fructose is converted to acetate by the gut microbiota and this supplies lipogenic acetyl-CoA independently of ACLY, with depletion of the microbiota or silencing of hepatic ACSS2, which generates acetyl-CoA from acetate, potently suppressing the conversion of bolus fructose into hepatic acetyl-CoA and fatty acids.
Acetate produced from dietary fructose by the gut microbiota → De novo lipogenesis source_derived_draftungraded
Experimental context and source evidence
availability_state
machinery_impairment Imported condition classification; unverified.
evidence_span
{"source_cache": "artifacts/acetate-research/32214246.abstract.txt", "locator": "Indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "302837a9fc88030dce2c74e65053f8baae65863245d2d811ccbb3231b95a99e1", "start_char": 0, "end_char": 1782, "text_sha256": "302837a9fc88030dce2c74e65053f8baae65863245d2d811ccbb3231b95a99e1"}
experimental_model
In vivo isotope tracing in mice with liver-specific Acly deletion, microbiota depletion and hepatic ACSS2 silencing
exposure
Bolus or gradual dietary fructose, with genetic, microbial and dose-rate manipulation
limitations
Three independent manipulations converge on the same route. Its dominance depends on how fast the fructose is eaten, and the human contribution is not established here.
nutrient_topic
Acetic acid research collection; topical membership is not evidence of a direct clinical effect, and the ingested acid is recorded separately from the circulating acetate anion. · Acetic acid
organism
Mouse
plain_language
The sugar becomes acetate in the gut, and the liver builds fat out of that.
primary_references
[acetate-p32214246] Dietary fructose feeds hepatic lipogenesis via microbiota-derived acetate. (2020). https://pubmed.ncbi.nlm.nih.gov/32214246/ DOI: 10.1038/s41586-020-2101-7
tissue_or_cell_type
Liver and gut
trigger_kind
machinery_impairment Imported condition classification; unverified.
Acetic acid: the ingested acid, the receptors acetate binds, the acetyl-CoA it becomes, and the acetyl groups that reach histones (2026-09-21) · lines 563–574
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · In vivo isotope tracing in mice with liver-specific Acly deletion, microbiota depletion and hepatic ACSS2 silencing · source_derived_draft · unverified_draft
### acetate-microbial-acetate-route Dietary fructose is converted to acetate by the gut microbiota and this supplies lipogenic acetyl-CoA independently of ACLY, with depletion of the microbiota or silencing of hepatic ACSS2, which generates acetyl-CoA from acetate, potently suppressing the conversion of bolus fructose into hepatic acetyl-CoA and fatty acids. Condition category: machinery_impairment nutrient_topic: Acetic acid research collection; topical membership is not evidence of a direct clinical effect, and the ingested acid is recorded separately from the circulating acetate anion. plain_language: The sugar becomes acetate in the gut, and the liver builds fat out of that. organism: Mouse tissue_or_cell_type: Liver and gut experimental_model: In vivo isotope tracing in mice with liver-specific Acly deletion, microbiota depletion and hepatic ACSS2 silencing limitations: Three independent manipulations converge on the same route. Its dominance depends on how fast the fructose is eaten, and the human contribution is not established here. exposure: Bolus or gradual dietary fructose, with genetic, microbial and dose-rate manipulation evidence_span: {"source_cache": "artifacts/acetate-research/32214246.abstract.txt", "locator": "Indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "302837a9fc88030dce2c74e65053f8baae65863245d2d811ccbb3231b95a99e1", "start_char": 0, "end_char": 1782, "text_sha256": "302837a9fc88030dce2c74e65053f8baae65863245d2d811ccbb3231b95a99e1"} [acetate-p32214246] Dietary fructose feeds hepatic lipogenesis via microbiota-derived acetate. (2020). https://pubmed.ncbi.nlm.nih.gov/32214246/ DOI: 10.1038/s41586-020-2101-7
Complete structured claim and evidence

The events it takes part in

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Situations it appears in

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In the sources

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Open hypotheses

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This is a research prototype built from draft material. It is not medical advice, and its statements still await verification against the original studies.

Fructose consumed as a single bolus rather than gradually