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Assays for Validating Histone Acetyltransferase Inhibitors
Published on: August 6, 2020
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GCN5 acetyltransferase in cellular energetic and metabolic processes
Beste Mutlu1, Pere Puigserver1
1Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA, USA; Department of Cell Biology, Harvard Medical School, Boston, MA, USA.
Biochimica Et Biophysica Acta. Gene Regulatory Mechanisms
|August 23, 2020
Summary
General Control Non-repressed 5 (GCN5) links cellular metabolism to gene expression by sensing nutrients and acetylating key proteins like PGC-1α. This process regulates energy metabolism and mitochondrial function, adapting cells to changing conditions.
Area of Science:
- Biochemistry
- Molecular Biology
- Epigenetics
Background:
- General Control Non-repressed 5 (GCN5) is a key histone acetyltransferase linking histone acetylation to transcriptional activation.
- GCN5's enzymatic activity is influenced by cellular metabolic and energetic states, impacting gene expression.
- GCN5 plays a critical role in energy metabolism by sensing acetyl-CoA and acetylating PGC-1α.
Purpose of the Study:
- To review how metabolic changes influence GCN5-dependent histone acetylation for cellular adaptation.
- To summarize GCN5's function as a nutrient sensor, focusing on non-histone protein acetylation.
- To highlight the metabolic role of PGC-1α acetylation in various tissues.
Main Methods:
- Literature review of GCN5 function in metabolism and gene regulation.
- Analysis of GCN5's role in sensing acetyl-CoA and acetylating PGC-1α.
- Examination of metabolic reprogramming and PGC-1α association with GCN5.
Main Results:
- Metabolism dynamically regulates GCN5-dependent histone acetylation to adapt gene expression.
- GCN5 acts as a crucial nutrient sensor, particularly through non-histone protein acetylation.
- PGC-1α acetylation by GCN5 is vital for energy metabolism and mitochondrial biogenesis across tissues.
Conclusions:
- GCN5 integrates metabolic signals to control gene expression via histone and non-histone acetylation.
- Understanding GCN5's role in nutrient sensing and PGC-1α acetylation is key to metabolic regulation.
- GCN5 acetylation of PGC-1α is a significant mechanism for adapting cellular energy metabolism.
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