Metabolic Regulation of Epigenetic Modifications

Cellular metabolism shapes the epigenetic landscape by supplying substrates and cofactors for chromatin-modifying enzymes. Central metabolites such as acetyl-coenzyme A (acetyl-CoA), S-adenosylmethionine and α-ketoglutarate serve not only as fuel or building blocks but also as dynamic regulators of histone acetylation, methylation and other post-translational modifications. Fluctuations in nutrient availability, oxygen tension and energetic demand alter the balance of these metabolites, thereby influencing chromatin accessibility and gene expression programmes. This interplay underpins fundamental processes in development, differentiation, stress adaptation and disease. In cancer, metabolic rewiring frequently drives aberrant epigenetic states, while in normal physiology metabolic sensors relay environmental cues to the nucleus to preserve cellular identity. Recent advances in in vivo isotope tracing, subcellular metabolite quantification and high-resolution chromatin profiling have illuminated how specific metabolic pathways directly control epigenetic enzymes and the downstream transcriptional outcomes. Understanding these mechanisms offers new avenues for therapeutic intervention across oncology, cardiology and regenerative medicine.

Research from Nature Portfolio

Recent investigations have refined our view of how acetyl-CoA flux is coordinated with histone acetylation in health and disease. A comprehensive review of acetyl-CoA metabolism in cancer highlights advances in tracing acetyl-CoA generation across subcellular compartments and identifies key nodes where enzyme inhibitors show therapeutic promise. This work emphasises the dual role of acetyl-CoA as both a biosynthetic precursor and a chromatin modifier, outlining how tumour cells exploit acetate and citrate pathways to sustain hyperacetylated chromatin under metabolic stress. In parallel, studies of cardiac tissue reveal that specific mitochondrial dehydrogenases translocate to the nucleus in response to chemotherapeutic damage. These enzymes locally produce metabolites that enhance chromatin accessibility via histone acetylation and activate stress-responsive kinase signalling, thereby safeguarding cardiomyocyte viability. Together, these findings demonstrate the spatial coordination of metabolic enzymes and epigenetic regulation as adaptive mechanisms in diverse biological contexts.

Metabolic Regulation of Epigenetic Modifications publication trend

The graph below shows the total number of articles in metabolic regulation of epigenetic modifications across all publications each year (not limited to Nature Index journals).

Technical terms

Epigenetic modifications: Reversible chemical marks on DNA or histone proteins that regulate chromatin structure and gene expression without altering the underlying DNA sequence.

Acetyl-CoA: A central metabolite that serves as the acetyl donor for histone acetylation and as a substrate for energy production and lipid biosynthesis.

Histone acetylation: The addition of acetyl groups to lysine residues on histone tails, generally associated with relaxed chromatin and active transcription.

Histone methylation: The transfer of methyl groups to lysine or arginine residues on histones, which can either activate or repress transcription depending on the specific site and degree of methylation.

Chromatin accessibility: The degree to which DNA is exposed and available for binding by transcription factors and other regulatory proteins, influenced by nucleosome positioning and histone modifications.

Acetyl-CoA synthetase: An enzyme that converts acetate into acetyl-CoA, linking acetate metabolism to histone acetylation and lipid synthesis.

References

1. Acetyl-CoA metabolism in cancer. Nature Reviews Cancer (2023).
2. Nuclear translocation of mitochondrial dehydrogenases as an adaptive cardioprotective mechanism. Nature Communications (2023).
3. The rate of glycolysis quantitatively mediates specific histone acetylation sites. Cancer & Metabolism (2015).
4. Acetate Recapturing by Nuclear Acetyl-CoA Synthetase 2 Prevents Loss of Histone Acetylation during Oxygen and Serum Limitation. Cell Reports (2017).