Crosstalk between cellular metabolism and histone acetylation

Area of Science:

• Biochemistry
• Epigenetics
• Metabolomics

Background:

• Cellular metabolism dynamically influences epigenetic regulation.
• Acetyl-coenzyme A (acetyl-CoA) is a central metabolite acting as the acetyl-donor for histone acetylation.
• Histone acetylation, a key epigenetic mark, controls gene expression.

Purpose of the Study:

• To highlight the critical role of acetyl-CoA in mediating the metabolic control of epigenetics.
• To address the challenge of quantifying metabolic conditions influencing histone acetylation.
• To provide guidance on experimental design for metabolite quantification and isotope tracing.

Main Methods:

• Discusses the enzymatic and non-enzymatic roles of acetyl-CoA in histone acetylation.
• Emphasizes the importance of measuring acetyl-CoA concentrations in physiological contexts.
• Proposes the use of isotope dilution and tracing for quantifying acetyl-CoA and related metabolites.

Main Results:

• Acetyl-CoA concentration acts as a rheostat for nutrient availability, impacting histone acetylation.
• Changes in acetyl-CoA levels directly affect histone acetylation and gene expression.
• Sub-cellular localization, metabolite quantities, and substrate availability influence the acetyl-CoA-histone acetylation relationship.

Conclusions:

• Understanding the interplay between acetyl-CoA metabolism and histone acetylation is vital for comprehending normal and pathological cellular functions.
• Accurate quantification of acetyl-CoA and related metabolites is essential for dissecting epigenetic regulation.
• Advanced metabolomic techniques, including isotope tracing, are critical for elucidating these complex biological networks.