Component
Core histone lysine acetylation
Core histone lysine acetylation. Identity is distinct from its gene and experimentally modified states; see each claim for organism and scope.
10 recorded relationships. Experimental role, claim status and evidence remain attached to each record.
How nutrients influence it
Every nutrient with a recorded effect on this component, credited to the nutrient that acted rather than the chapter that recorded it. Open a nutrient to see the findings and the conditions they were measured under.
Other things that act on it
Enzymes, hormones, genes, and other components with a recorded effect. These are not nutrients, so they do not count toward the arrows above. Each finding names the chapter that recorded it.
How nutrients reach it in more than one step
Chains of two or more recorded steps that end here, grouped by the nutrient they start from. Each step is a separate finding, so a chain is a route a mechanism could take, not proof that it does.
Tracing routes…
What it does
Every recorded relationship this component is part of, grouped by its role. Plain wording comes first; the technical statement follows.
What acts on it
Sulforaphane decreased acetylated histone H3, H4 and tubulin markers in the cell comparisons despite reduced HDAC protein levels.
Experimental context and source evidence
- evidence_span
- {"source_cache": "artifacts/sulforaphane-research/25307283.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "cc736d6c2f2dc6c4026bdad0a5835d69ed094775076a2c1606f47020e6783331", "start_char": 0, "end_char": 1504, "text_sha256": "cc736d6c2f2dc6c4026bdad0a5835d69ed094775076a2c1606f47020e6783331"}
- experimental_model
- Matched cell-type and time-course comparison
- exposure
- Sulforaphane exposure; serum and time-course comparisons
- limitations
- Activity assays, protein abundance and substrate acetylation are distinct endpoints; mechanism of their divergence was not established. Erratum PMID 27271518 adds an omitted funding acknowledgment without revising these results.
- nutrient_topic
- Sulforaphane research collection; topical membership is not evidence of a direct dietary effect. · Sulforaphane / SFN, stereochemistry specified per study
- organism
- Human HaCaT keratinocytes and HCT116 colon cancer cells
- plain_language
- Less enzyme protein did not produce the expected increase in acetylation.
- primary_references
- [sulforaphane-p25307283] The effect of sulforaphane on histone deacetylase activity in keratinocytes: Differences between in vitro and in vivo analyses. (2015). https://pubmed.ncbi.nlm.nih.gov/25307283/ DOI: 10.1002/mc.22224
- tissue_or_cell_type
- HDAC activity, protein levels and target acetylation
Sulforaphane: formation, electrophile sensing and nutrient connections (2026-09-17) · lines 606–617
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Matched cell-type and time-course comparison · source_derived_draft · unverified_draft
### sulforaphane-histone-acetylation-down Sulforaphane decreased acetylated histone H3, H4 and tubulin markers in the cell comparisons despite reduced HDAC protein levels. Condition category: normal nutrient_topic: Sulforaphane research collection; topical membership is not evidence of a direct dietary effect. plain_language: Less enzyme protein did not produce the expected increase in acetylation. organism: Human HaCaT keratinocytes and HCT116 colon cancer cells tissue_or_cell_type: HDAC activity, protein levels and target acetylation experimental_model: Matched cell-type and time-course comparison limitations: Activity assays, protein abundance and substrate acetylation are distinct endpoints; mechanism of their divergence was not established. Erratum PMID 27271518 adds an omitted funding acknowledgment without revising these results. exposure: Sulforaphane exposure; serum and time-course comparisons evidence_span: {"source_cache": "artifacts/sulforaphane-research/25307283.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "cc736d6c2f2dc6c4026bdad0a5835d69ed094775076a2c1606f47020e6783331", "start_char": 0, "end_char": 1504, "text_sha256": "cc736d6c2f2dc6c4026bdad0a5835d69ed094775076a2c1606f47020e6783331"} [sulforaphane-p25307283] The effect of sulforaphane on histone deacetylase activity in keratinocytes: Differences between in vitro and in vivo analyses. (2015). https://pubmed.ncbi.nlm.nih.gov/25307283/ DOI: 10.1002/mc.22224
Complete structured claim and evidenceSulforaphane exposure increased acetylated histones in HEK293 and HCT116 experiments, including increased acetylated histones at the HCT116 P21 promoter.
Experimental context and source evidence
- evidence_span
- {"source_cache": "artifacts/sulforaphane-research/15313918.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "9478957b1513e25cb47f13d6a1aca0df542fc851d8eb4b9c6394010e90dbe83e", "start_char": 0, "end_char": 1861, "text_sha256": "9478957b1513e25cb47f13d6a1aca0df542fc851d8eb4b9c6394010e90dbe83e"}
- experimental_model
- Cell exposure, enzyme assays, metabolites and chromatin immunoprecipitation
- exposure
- Parent SFN, SFN-GSH, SFN-Cys and SFN-NAC; GST inhibition
- limitations
- High-level HDAC activity was measured without establishing universal isoform inhibition; cell effects are not cancer-treatment outcomes.
- nutrient_topic
- Sulforaphane research collection; topical membership is not evidence of a direct dietary effect. · Sulforaphane / SFN, stereochemistry specified per study
- organism
- Human HEK293 and HCT116 cells
- plain_language
- The study measured a change to the chemical marks on DNA-packaging proteins.
- primary_references
- [sulforaphane-p15313918] A novel mechanism of chemoprotection by sulforaphane: inhibition of histone deacetylase. (2004). https://pubmed.ncbi.nlm.nih.gov/15313918/ DOI: 10.1158/0008-5472.can-04-1326
- tissue_or_cell_type
- Histone deacetylase activity and histone acetylation
Sulforaphane: formation, electrophile sensing and nutrient connections (2026-09-17) · lines 593–604
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Cell exposure, enzyme assays, metabolites and chromatin immunoprecipitation · source_derived_draft · unverified_draft
### sulforaphane-histone-acetylation-up Sulforaphane exposure increased acetylated histones in HEK293 and HCT116 experiments, including increased acetylated histones at the HCT116 P21 promoter. Condition category: normal nutrient_topic: Sulforaphane research collection; topical membership is not evidence of a direct dietary effect. plain_language: The study measured a change to the chemical marks on DNA-packaging proteins. organism: Human HEK293 and HCT116 cells tissue_or_cell_type: Histone deacetylase activity and histone acetylation experimental_model: Cell exposure, enzyme assays, metabolites and chromatin immunoprecipitation limitations: High-level HDAC activity was measured without establishing universal isoform inhibition; cell effects are not cancer-treatment outcomes. exposure: Parent SFN, SFN-GSH, SFN-Cys and SFN-NAC; GST inhibition evidence_span: {"source_cache": "artifacts/sulforaphane-research/15313918.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "9478957b1513e25cb47f13d6a1aca0df542fc851d8eb4b9c6394010e90dbe83e", "start_char": 0, "end_char": 1861, "text_sha256": "9478957b1513e25cb47f13d6a1aca0df542fc851d8eb4b9c6394010e90dbe83e"} [sulforaphane-p15313918] A novel mechanism of chemoprotection by sulforaphane: inhibition of histone deacetylase. (2004). https://pubmed.ncbi.nlm.nih.gov/15313918/ DOI: 10.1158/0008-5472.can-04-1326
Complete structured claim and evidenceExogenous acetate uptake is controlled by expression of both ACSS2 and the mitochondrial ACSS1, and the mitochondrial and lipogenic demand for two-carbon acetyl units considerably exceeds the uptake of exogenous acetate, leaving it to only sparingly contribute to histone acetylation.
Experimental context and source evidence
- evidence_span
- {"source_cache": "artifacts/acetate-research/28099844.abstract.txt", "locator": "Indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "6df5e8ccde04ad8a222db774f6a8b1e8838ad6a1d918ff84b667d6dde57de188", "start_char": 0, "end_char": 1134, "text_sha256": "6df5e8ccde04ad8a222db774f6a8b1e8838ad6a1d918ff84b667d6dde57de188"}
- experimental_model
- Quantitative analysis of acetate metabolism in cultured cells under oxygen and serum limitation
- exposure
- Exogenous acetate with ACSS2 and ACSS1 manipulation under oxygen and serum limitation
- limitations
- The quantitative accounting here is the important part and it is a limiting result: demand for two-carbon units far exceeds what exogenous acetate supplies. Cultured cells at a given acetate concentration, which is not a fed human.
- 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
- Cultured cells
- plain_language
- Acetate taken in from outside is mostly burned or built into fat; very little of it reaches the histones.
- primary_references
- [acetate-p28099844] Acetate Recapturing by Nuclear Acetyl-CoA Synthetase 2 Prevents Loss of Histone Acetylation during Oxygen and Serum Limitation. (2017). https://pubmed.ncbi.nlm.nih.gov/28099844/ DOI: 10.1016/j.celrep.2016.12.055
- tissue_or_cell_type
- Nucleus and cytosol
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 589–600
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Quantitative analysis of acetate metabolism in cultured cells under oxygen and serum limitation · source_derived_draft · unverified_draft
### acetate-exogenous-acetate-sparing Exogenous acetate uptake is controlled by expression of both ACSS2 and the mitochondrial ACSS1, and the mitochondrial and lipogenic demand for two-carbon acetyl units considerably exceeds the uptake of exogenous acetate, leaving it to only sparingly contribute to histone acetylation. 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: Acetate taken in from outside is mostly burned or built into fat; very little of it reaches the histones. organism: Cultured cells tissue_or_cell_type: Nucleus and cytosol experimental_model: Quantitative analysis of acetate metabolism in cultured cells under oxygen and serum limitation limitations: The quantitative accounting here is the important part and it is a limiting result: demand for two-carbon units far exceeds what exogenous acetate supplies. Cultured cells at a given acetate concentration, which is not a fed human. exposure: Exogenous acetate with ACSS2 and ACSS1 manipulation under oxygen and serum limitation evidence_span: {"source_cache": "artifacts/acetate-research/28099844.abstract.txt", "locator": "Indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "6df5e8ccde04ad8a222db774f6a8b1e8838ad6a1d918ff84b667d6dde57de188", "start_char": 0, "end_char": 1134, "text_sha256": "6df5e8ccde04ad8a222db774f6a8b1e8838ad6a1d918ff84b667d6dde57de188"} [acetate-p28099844] Acetate Recapturing by Nuclear Acetyl-CoA Synthetase 2 Prevents Loss of Histone Acetylation during Oxygen and Serum Limitation. (2017). https://pubmed.ncbi.nlm.nih.gov/28099844/ DOI: 10.1016/j.celrep.2016.12.055
Complete structured claim and evidenceOxygen and serum limitation increased nuclear localisation of ACSS2, and nuclear ACSS2 recaptures acetate released from histone deacetylation for recycling by histone acetyltransferases, providing evidence for limited equilibration between nuclear and cytosolic acetyl-CoA and demonstrating that ACSS2 retains acetate to maintain histone acetylation.
Experimental context and source evidence
- evidence_span
- {"source_cache": "artifacts/acetate-research/28099844.abstract.txt", "locator": "Indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "6df5e8ccde04ad8a222db774f6a8b1e8838ad6a1d918ff84b667d6dde57de188", "start_char": 0, "end_char": 1134, "text_sha256": "6df5e8ccde04ad8a222db774f6a8b1e8838ad6a1d918ff84b667d6dde57de188"}
- experimental_model
- Quantitative analysis of acetate metabolism in cultured cells under oxygen and serum limitation
- exposure
- Exogenous acetate with ACSS2 and ACSS1 manipulation under oxygen and serum limitation
- limitations
- The quantitative accounting here is the important part and it is a limiting result: demand for two-carbon units far exceeds what exogenous acetate supplies. Cultured cells at a given acetate concentration, which is not a fed human.
- 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
- Cultured cells
- plain_language
- An enzyme sitting on the chromatin catches the acetate released when marks are removed, and puts it straight back.
- primary_references
- [acetate-p28099844] Acetate Recapturing by Nuclear Acetyl-CoA Synthetase 2 Prevents Loss of Histone Acetylation during Oxygen and Serum Limitation. (2017). https://pubmed.ncbi.nlm.nih.gov/28099844/ DOI: 10.1016/j.celrep.2016.12.055
- tissue_or_cell_type
- Nucleus and cytosol
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 602–613
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Quantitative analysis of acetate metabolism in cultured cells under oxygen and serum limitation · source_derived_draft · unverified_draft
### acetate-nuclear-acss2-recapture Oxygen and serum limitation increased nuclear localisation of ACSS2, and nuclear ACSS2 recaptures acetate released from histone deacetylation for recycling by histone acetyltransferases, providing evidence for limited equilibration between nuclear and cytosolic acetyl-CoA and demonstrating that ACSS2 retains acetate to maintain histone acetylation. 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: An enzyme sitting on the chromatin catches the acetate released when marks are removed, and puts it straight back. organism: Cultured cells tissue_or_cell_type: Nucleus and cytosol experimental_model: Quantitative analysis of acetate metabolism in cultured cells under oxygen and serum limitation limitations: The quantitative accounting here is the important part and it is a limiting result: demand for two-carbon units far exceeds what exogenous acetate supplies. Cultured cells at a given acetate concentration, which is not a fed human. exposure: Exogenous acetate with ACSS2 and ACSS1 manipulation under oxygen and serum limitation evidence_span: {"source_cache": "artifacts/acetate-research/28099844.abstract.txt", "locator": "Indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "6df5e8ccde04ad8a222db774f6a8b1e8838ad6a1d918ff84b667d6dde57de188", "start_char": 0, "end_char": 1134, "text_sha256": "6df5e8ccde04ad8a222db774f6a8b1e8838ad6a1d918ff84b667d6dde57de188"} [acetate-p28099844] Acetate Recapturing by Nuclear Acetyl-CoA Synthetase 2 Prevents Loss of Histone Acetylation during Oxygen and Serum Limitation. (2017). https://pubmed.ncbi.nlm.nih.gov/28099844/ DOI: 10.1016/j.celrep.2016.12.055
Complete structured claim and evidenceExtracellular acetate restored histone acetylation in ACLY-silenced HCT116 cells in a dose-dependent manner that required AceCS1, now named ACSS2.
Experimental context and source evidence
- availability_state
- machinery_impairment Imported condition classification; unverified.
- cross_nutrient
- false
- evidence_location
- BioC text lines 11, 51; Fig. 2A–B
- experimental_model
- ACLY and/or AceCS1 siRNA with acetate supplementation
- exposure
- 0, 1 or 5 mM acetate for 24 hours before lysis after siRNA treatment.
- limitations
- The authors identify this acetate supply as supraphysiologic; it is not a dietary recommendation and does not show rescue of an absent CoA pool. This experiment does not establish a dietary pantothenate threshold or benefit from B5 supplementation.
- nutrient_topic
- Pantothenic acid (vitamin B5) research collection; topical membership is not evidence of a direct dietary effect. · Pantothenate (vitamin B5)
- organism
- Homo sapiens
- plain_language
- A second acetyl-CoA-producing route could compensate when enough acetate was supplied.
- primary_references
- [b5-met-chromatin2009] ATP-citrate lyase links cellular metabolism to histone acetylation. (2009). https://pubmed.ncbi.nlm.nih.gov/19461003/ DOI: 10.1126/science.1164097
- tissue_or_cell_type
- HCT116 cells
- trigger_kind
- machinery_impairment Imported condition classification; unverified.
Pantothenic acid (vitamin B5): coenzyme A, deficiency and nutrient interactions (2026-09-17) · lines 1005–1017
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · ACLY and/or AceCS1 siRNA with acetate supplementation · source_derived_draft · unverified_draft
### b5-met-acetate-acss2-histone-rescue Extracellular acetate restored histone acetylation in ACLY-silenced HCT116 cells in a dose-dependent manner that required AceCS1, now named ACSS2. Condition category: machinery_impairment nutrient_topic: Pantothenic acid (vitamin B5) research collection; topical membership is not evidence of a direct dietary effect. plain_language: A second acetyl-CoA-producing route could compensate when enough acetate was supplied. organism: Homo sapiens tissue_or_cell_type: HCT116 cells experimental_model: ACLY and/or AceCS1 siRNA with acetate supplementation limitations: The authors identify this acetate supply as supraphysiologic; it is not a dietary recommendation and does not show rescue of an absent CoA pool. This experiment does not establish a dietary pantothenate threshold or benefit from B5 supplementation. exposure: 0, 1 or 5 mM acetate for 24 hours before lysis after siRNA treatment. cross_nutrient: false evidence_location: BioC text lines 11, 51; Fig. 2A–B [b5-met-chromatin2009] ATP-citrate lyase links cellular metabolism to histone acetylation. (2009). https://pubmed.ncbi.nlm.nih.gov/19461003/ DOI: 10.1126/science.1164097
Complete structured claim and evidenceACLY silencing reduced acetylation of the core histones assayed in HCT116 cells.
Experimental context and source evidence
- availability_state
- machinery_impairment Imported condition classification; unverified.
- cross_nutrient
- true
- evidence_location
- BioC text lines 11, 17, 51; Fig. 2A,E
- experimental_model
- ACLY siRNA versus control
- exposure
- 72-hour siRNA treatment.
- limitations
- Tubulin acetylation was not comparably reduced. This is a source-specific cellular result, not a universal block of protein acetylation. This experiment does not establish a dietary pantothenate threshold or benefit from B5 supplementation.
- nutrient_topic
- Pantothenic acid (vitamin B5) research collection; topical membership is not evidence of a direct dietary effect. · Pantothenate (vitamin B5)
- organism
- Homo sapiens
- plain_language
- Histone acetylation depended partly on this source of acetyl-CoA in colon-cancer cells.
- primary_references
- [b5-met-chromatin2009] ATP-citrate lyase links cellular metabolism to histone acetylation. (2009). https://pubmed.ncbi.nlm.nih.gov/19461003/ DOI: 10.1126/science.1164097
- tissue_or_cell_type
- HCT116 cells and acid-extracted histones
- trigger_kind
- machinery_impairment Imported condition classification; unverified.
Pantothenic acid (vitamin B5): coenzyme A, deficiency and nutrient interactions (2026-09-17) · lines 991–1003
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · ACLY siRNA versus control · source_derived_draft · unverified_draft
### b5-met-acly-hct-histones ACLY silencing reduced acetylation of the core histones assayed in HCT116 cells. Condition category: machinery_impairment nutrient_topic: Pantothenic acid (vitamin B5) research collection; topical membership is not evidence of a direct dietary effect. plain_language: Histone acetylation depended partly on this source of acetyl-CoA in colon-cancer cells. organism: Homo sapiens tissue_or_cell_type: HCT116 cells and acid-extracted histones experimental_model: ACLY siRNA versus control limitations: Tubulin acetylation was not comparably reduced. This is a source-specific cellular result, not a universal block of protein acetylation. This experiment does not establish a dietary pantothenate threshold or benefit from B5 supplementation. exposure: 72-hour siRNA treatment. cross_nutrient: true evidence_location: BioC text lines 11, 17, 51; Fig. 2A,E [b5-met-chromatin2009] ATP-citrate lyase links cellular metabolism to histone acetylation. (2009). https://pubmed.ncbi.nlm.nih.gov/19461003/ DOI: 10.1126/science.1164097
Complete structured claim and evidenceSerum-induced histone acetylation in immortalized mouse embryonic fibroblasts depended on glucose availability and was prevented by Acly silencing.
Experimental context and source evidence
- cross_nutrient
- true
- evidence_location
- BioC text line 21; Fig. 3B–C
- experimental_model
- Serum stimulation with/without glucose and Acly siRNA
- exposure
- Experimental serum stimulation and glucose withdrawal; no selective pantothenate deprivation.
- limitations
- Glucose was the experimentally varied fuel. This is not evidence of B5 deficiency; cellular acetyl-CoA sources differ by context. This experiment does not establish a dietary pantothenate threshold or benefit from B5 supplementation.
- nutrient_topic
- Pantothenic acid (vitamin B5) research collection; topical membership is not evidence of a direct dietary effect. · Pantothenate (vitamin B5)
- organism
- Mus musculus
- plain_language
- Glucose supply affected histone acetylation through an acetyl-CoA-producing enzyme in this cell model.
- primary_references
- [b5-met-chromatin2009] ATP-citrate lyase links cellular metabolism to histone acetylation. (2009). https://pubmed.ncbi.nlm.nih.gov/19461003/ DOI: 10.1126/science.1164097
- tissue_or_cell_type
- Immortalized mouse embryonic fibroblasts
Pantothenic acid (vitamin B5): coenzyme A, deficiency and nutrient interactions (2026-09-17) · lines 1019–1031
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Serum stimulation with/without glucose and Acly siRNA · source_derived_draft · unverified_draft
### b5-met-glucose-acly-histones Serum-induced histone acetylation in immortalized mouse embryonic fibroblasts depended on glucose availability and was prevented by Acly silencing. Condition category: normal nutrient_topic: Pantothenic acid (vitamin B5) research collection; topical membership is not evidence of a direct dietary effect. plain_language: Glucose supply affected histone acetylation through an acetyl-CoA-producing enzyme in this cell model. organism: Mus musculus tissue_or_cell_type: Immortalized mouse embryonic fibroblasts experimental_model: Serum stimulation with/without glucose and Acly siRNA limitations: Glucose was the experimentally varied fuel. This is not evidence of B5 deficiency; cellular acetyl-CoA sources differ by context. This experiment does not establish a dietary pantothenate threshold or benefit from B5 supplementation. exposure: Experimental serum stimulation and glucose withdrawal; no selective pantothenate deprivation. cross_nutrient: true evidence_location: BioC text line 21; Fig. 3B–C [b5-met-chromatin2009] ATP-citrate lyase links cellular metabolism to histone acetylation. (2009). https://pubmed.ncbi.nlm.nih.gov/19461003/ DOI: 10.1126/science.1164097
Complete structured claim and evidence
Where it participates (unsigned role)
In the colonic-cell experiments, butyrate metabolism supplied acetyl-CoA for energy metabolism and histone acetyltransferase activity.
Experimental context and source evidence
- evidence_access
- Primary abstract
- experimental_model
- Human colonic-cell metabolic experiments.
- limitations
- This is a multistep metabolic conversion; no single CoA ligase is assigned without direct evidence.
- nutrient_topic
- Butyrate collection; molecular form, preparation, species, exposure and manipulation remain explicit. · Butyrate
- plain_language
- The same carbon source supported both fuel use and adding acetyl marks.
- primary_references
- The Warburg effect dictates the mechanism of butyrate-mediated histone acetylation and cell proliferation. · 2012 · https://pubmed.ncbi.nlm.nih.gov/23063526/ · DOI 10.1016/j.molcel.2012.08.033
Butyrate: microbial production, fuel use, signaling and nutrient interactions (2026-09-19) · lines 182–188
AI-assisted research curation; primary-abstract references and experimental limitations individually identified. Not publisher full text. · supports · Human colonic-cell metabolic experiments. · source_derived_draft · unverified_draft
## butyrate-acetyl-coa The same carbon source supported both fuel use and adding acetyl marks. In the colonic-cell experiments, butyrate metabolism supplied acetyl-CoA for energy metabolism and histone acetyltransferase activity. Model: Human colonic-cell metabolic experiments. Limitations: This is a multistep metabolic conversion; no single CoA ligase is assigned without direct evidence. Evidence access: Primary abstract The Warburg effect dictates the mechanism of butyrate-mediated histone acetylation and cell proliferation. · 2012 · https://pubmed.ncbi.nlm.nih.gov/23063526/ · DOI 10.1016/j.molcel.2012.08.033
Complete structured claim and evidenceButyrate increased histone H3 acetylation at Foxp3 regulatory regions under Treg-polarizing conditions and promoted Treg differentiation.
Experimental context and source evidence
- evidence_access
- Primary abstract
- experimental_model
- Mouse naive T-cell differentiation, chromatin measurements and colitis experiments.
- limitations
- Not a claim that butyrate turns every T cell into a Treg or universally suppresses immunity. Correction record: Publisher correction reviewed: Figure 1d upper-right axis identifies Neuropilin-1-positive Foxp3-positive cells; the originally printed negative-marker label was wrong. The notice does not amend the Foxp3 histone-acetylation result cited here. https://www.nature.com/articles/nature13041
- nutrient_topic
- Butyrate collection; molecular form, preparation, species, exposure and manipulation remain explicit. · Butyrate
- plain_language
- The surrounding immune signals helped determine which gene program turned on.
- primary_references
- Commensal microbe-derived butyrate induces the differentiation of colonic regulatory T cells. · 2013 · https://pubmed.ncbi.nlm.nih.gov/24226770/ · DOI 10.1038/nature12721
Butyrate: microbial production, fuel use, signaling and nutrient interactions (2026-09-19) · lines 334–340
AI-assisted research curation; primary-abstract references and experimental limitations individually identified. Not publisher full text. · supports · Mouse naive T-cell differentiation, chromatin measurements and colitis experiments. · source_derived_draft · unverified_draft
## butyrate-foxp3-acetylation The surrounding immune signals helped determine which gene program turned on. Butyrate increased histone H3 acetylation at Foxp3 regulatory regions under Treg-polarizing conditions and promoted Treg differentiation. Model: Mouse naive T-cell differentiation, chromatin measurements and colitis experiments. Limitations: Not a claim that butyrate turns every T cell into a Treg or universally suppresses immunity. Correction record: Publisher correction reviewed: Figure 1d upper-right axis identifies Neuropilin-1-positive Foxp3-positive cells; the originally printed negative-marker label was wrong. The notice does not amend the Foxp3 histone-acetylation result cited here. https://www.nature.com/articles/nature13041 Evidence access: Primary abstract Commensal microbe-derived butyrate induces the differentiation of colonic regulatory T cells. · 2013 · https://pubmed.ncbi.nlm.nih.gov/24226770/ · DOI 10.1038/nature12721
Complete structured claim and evidenceMutagenesis and RNA interference revealed that the putative monocarboxylic acid transporter Tarag was essential for enhancement of immunodeficiency pathway signalling by dietary acetate, and reduced expression of the histone acetyltransferase Tip60 decreased that signalling and blocked rescue by dietary acetate and by other sources of intracellular acetyl-CoA, while interference with histone deacetylation augmented transcription of ecdysone-regulated genes including pathway targets.
Experimental context and source evidence
- evidence_span
- {"source_cache": "artifacts/acetate-research/34107298.abstract.txt", "locator": "Indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "4e5644412d174b2512ecf9cedea282b022d647b1b8a82f693a8f389da991425a", "start_char": 0, "end_char": 1179, "text_sha256": "4e5644412d174b2512ecf9cedea282b022d647b1b8a82f693a8f389da991425a"}
- experimental_model
- Drosophila mutagenesis and RNA interference in enteroendocrine cells of the anterior midgut
- exposure
- Dietary acetate with disruption of a monocarboxylic acid transporter, of histone deacetylation, and of the Tip60 acetyltransferase
- limitations
- This is a fly study. The mammalian relevance is the authors’ statement that the Tip60-steroid hormone axis is conserved, not a mammalian measurement.
- 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
- Drosophila
- plain_language
- Acetate has to be carried inside the cell and turned into a chromatin mark; it is not read at the cell surface.
- primary_references
- [acetate-p34107298] Microbiota-derived acetate activates intestinal innate immunity via the Tip60 histone acetyltransferase complex. (2021). https://pubmed.ncbi.nlm.nih.gov/34107298/ DOI: 10.1016/j.immuni.2021.05.017
- tissue_or_cell_type
- Anterior midgut
- transport_effect
- raises The transporter was required for dietary acetate to reach the intracellular acetyl-CoA route.
- transport_pool
- the intracellular acetate pool The transporter was required for dietary acetate to reach the intracellular acetyl-CoA route.
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 693–704
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Drosophila mutagenesis and RNA interference in enteroendocrine cells of the anterior midgut · source_derived_draft · unverified_draft
### acetate-acetate-must-enter Mutagenesis and RNA interference revealed that the putative monocarboxylic acid transporter Tarag was essential for enhancement of immunodeficiency pathway signalling by dietary acetate, and reduced expression of the histone acetyltransferase Tip60 decreased that signalling and blocked rescue by dietary acetate and by other sources of intracellular acetyl-CoA, while interference with histone deacetylation augmented transcription of ecdysone-regulated genes including pathway targets. 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: Acetate has to be carried inside the cell and turned into a chromatin mark; it is not read at the cell surface. organism: Drosophila tissue_or_cell_type: Anterior midgut experimental_model: Drosophila mutagenesis and RNA interference in enteroendocrine cells of the anterior midgut limitations: This is a fly study. The mammalian relevance is the authors’ statement that the Tip60-steroid hormone axis is conserved, not a mammalian measurement. exposure: Dietary acetate with disruption of a monocarboxylic acid transporter, of histone deacetylation, and of the Tip60 acetyltransferase evidence_span: {"source_cache": "artifacts/acetate-research/34107298.abstract.txt", "locator": "Indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "4e5644412d174b2512ecf9cedea282b022d647b1b8a82f693a8f389da991425a", "start_char": 0, "end_char": 1179, "text_sha256": "4e5644412d174b2512ecf9cedea282b022d647b1b8a82f693a8f389da991425a"} [acetate-p34107298] Microbiota-derived acetate activates intestinal innate immunity via the Tip60 histone acetyltransferase complex. (2021). https://pubmed.ncbi.nlm.nih.gov/34107298/ DOI: 10.1016/j.immuni.2021.05.017
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