Determination of ATP Content in Cells

Area of Science:

• Biochemistry
• Analytical Chemistry
• Cell Biology

Background:

• Adenosine triphosphate (ATP) is a crucial molecule for cellular energy.
• Accurate quantification of ATP is essential for understanding cellular metabolism and function.
• High-performance liquid chromatography (HPLC) is a powerful technique for analyzing biomolecules.

Purpose of the Study:

• To develop and optimize an HPLC method for the separation and quantification of ATP.
• To demonstrate the method's ability to distinguish cellular ATP from external standards.

Main Methods:

• Utilized a Poroshell 120 EC-C18 column (3 × 150 mm, 2.7 μm).
• Employed a mobile phase consisting of a pH 6.8 buffer solution (0.05 mol/L KH2PO4 - 0.05 mol/L K2HPO4, V:V = 1:1).
• Operated at 25°C with a flow rate of 0.6 mL/min and detected at 254 nm.

Main Results:

• Achieved clear separation between ATP standards (red chromatogram) and ATP extracted from cells (blue chromatogram).
• The chromatograms indicate successful resolution and detection of ATP.
• The optimized conditions facilitated reliable ATP analysis.

Conclusions:

• The developed HPLC method is suitable for accurate ATP quantification in cellular extracts.
• This technique enables differentiation and measurement of endogenous ATP.
• The findings support the use of HPLC for biochemical and metabolic studies involving ATP.