Local acetyl-CoA metabolism and acetate recycling as epigenetic regulators of chromatin dynamics.

Local chromatin-proximal acetyl-CoA production and acetate recycling regulate histone acetylation independently of bulk metabolite levels.

• Why it matters: Understanding spatial control of histone acetylation is crucial because it links nutrient sensing to gene regulation and disease processes, yet how local metabolite pools are established remains unclear.
• What they did: The study examined yeast Acs2 and mammalian ACSS2 enzymes, showing their association with chromatin and their role in recapturing acetate to sustain histone acetylation, involving multi-enzyme complexes like the SESAME complex.
• The result: Findings suggest that local metabolite production influences epigenetic states and gene expression, providing insights into spatial metabolic regulation that could inform targeted therapeutic strategies.