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Updated: Jun 24, 2025
08:51
Quantification of Coenzyme A in Cells and Tissues
Published on: September 27, 2019
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Coenzyme A biosynthesis: mechanisms of regulation, function and disease
Samuel A Barritt1, Sarah E DuBois-Coyne2, Christian C Dibble3
1Department of Pathology, Cancer Research Institute, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.
Nature Metabolism
|June 13, 2024
Summary
Coenzyme A (CoA) is vital for numerous cellular functions. This study explores how CoA production is regulated through nutrient pathways and signaling, impacting various metabolic processes and diseases.
Area of Science:
- Biochemistry and Molecular Biology
- Metabolic Regulation
- Cellular Cofactor Synthesis
Background:
- Coenzyme A (CoA) is an essential cofactor for critical cellular processes, including the tricarboxylic acid cycle, nutrient oxidation, lipid synthesis, and heme biosynthesis.
- While the roles of acyl groups carried by CoA are well-studied, the regulation of CoA biosynthesis itself remains less understood.
- CoA is synthesized from cysteine, ATP, and pantothenate (vitamin B5) or salvaged from precursors in mammals.
Purpose of the Study:
- To elucidate the regulatory mechanisms governing coenzyme A (CoA) biosynthesis.
- To identify key signaling pathways and metabolites involved in controlling CoA production.
- To discuss the implications of CoA biosynthesis dysregulation in human diseases.
Main Methods:
- Review and discussion of existing literature on CoA biosynthesis pathways and regulation.
- Analysis of metabolite feedback and signaling mechanisms impacting CoA production.
- Exploration of methods for measuring CoA-related metabolites and potential therapeutic targets.
Main Results:
- CoA biosynthesis is tightly regulated by metabolite feedback and complex signaling networks.
- Key regulators include acetyl-CoA, other acyl-CoAs, acyl-carnitines, transcription factors (MYC, p53), nuclear receptors (PPARα), and signaling pathways (PI3K-AKT).
- Regulation involves the pantothenate transporter SLC5A6/SMVT and CoA biosynthesis enzymes (PANK1-4, COASY).
Conclusions:
- Cellular CoA levels are dynamically controlled through intricate regulatory mechanisms involving nutrient availability and signaling pathways.
- Dysregulation of CoA biosynthesis is linked to various human diseases, including cataracts, cardiomyopathy, and neurodegenerative disorders like PKAN and COPAN.
- Understanding CoA production control offers potential avenues for therapeutic intervention in metabolic and genetic diseases.
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