A simple, fully enzymic bioluminescent assay for triglycerides in serum

Area of Science:

• Biochemistry
• Analytical Chemistry
• Enzymology

Background:

• Triglycerides are key lipids in human health and disease.
• Accurate quantification of triglycerides is essential for clinical diagnostics.
• Existing triglyceride assays may have limitations in speed or precision.

Purpose of the Study:

• To develop a novel, fully enzymic bioluminescent assay for triglyceride determination.
• To establish a sensitive and precise method for quantifying triglyceride concentrations.
• To integrate all assay steps into a single test tube for convenience.

Main Methods:

• Utilized lipase (EC 3.1.1.3) and carboxylesterase (EC 3.1.1.1) to cleave triglycerides.
• Employed glycerol kinase (EC 2.7.1.30) to phosphorylate released glycerol with ATP.
• Quantified consumed ATP using the firefly luciferin-luciferase bioluminescent reaction.

Main Results:

• The bioluminescent signal directly correlated with triglyceride concentration.
• Assay precision (coefficient of variation) ranged from 1% to 7%.
• Demonstrated high correlation (r = 0.98) with a spectrophotometric method.

Conclusions:

• The developed fully enzymic bioluminescent assay provides a sensitive and precise method for triglyceride measurement.
• The single-test-tube format enhances assay efficiency and practicality.
• This assay is suitable for accurate triglyceride quantification in various biological samples.