Validated comprehensive analytical method for quantification of coenzyme A activated compounds in biological tissues...

Area of Science:

• Biochemistry
• Analytical Chemistry
• Metabolomics

Background:

• Coenzyme A (CoA) esters are vital metabolites involved in numerous cellular processes.
• Accurate quantification of acyl-CoAs is essential for understanding metabolic pathways and disease states.
• Existing methods for acyl-CoA analysis can be complex and lack comprehensive coverage.

Purpose of the Study:

• To establish a robust and comprehensive analytical method for identifying and quantifying the entire class of acyl-CoAs.
• To enable accurate measurement of short-, medium-, and long-chain acyl-CoAs in various biological tissues.
• To provide a reliable tool for metabolomic studies involving CoA-activated substances.

Main Methods:

• Development of an online solid-phase extraction (SPE) coupled with liquid chromatography-tandem mass spectrometry (LC/MS/MS).
• A simplified three-step sample preparation protocol: buffer/solvent/standard addition, homogenization, and centrifugation.
• Direct injection of the supernatant into the SPE-LC/MS/MS system for analysis.

Main Results:

• The method demonstrated excellent accuracy (87–107%) and precision (0.1–12.8%) for acyl-CoA fatty acids in mouse skeletal muscle.
• Achieved a low limit of quantification, below 3.1% of physiological levels in 200 mg of mouse tissue.
• Validated across multiple tissues including mouse liver, adipose tissue, and rat liver, with no observed matrix effects.

Conclusions:

• The developed SPE-LC/MS/MS method is robust, reliable, and comprehensive for acyl-CoA analysis.
• This method facilitates accurate quantification of diverse acyl-CoAs in biological samples.
• It offers a valuable tool for advancing research in metabolic biochemistry and disease diagnostics.