High-throughput metabolic profiling based on small amount of hepatic cells

Area of Science:

• Cellular Metabolism
• Analytical Chemistry
• Biochemistry

Background:

• Standard metabolomics requires large cell numbers (10^6), limiting throughput.
• Cell culture and preparation are time-consuming, hindering rapid analysis.
• A need exists for sensitive metabolic profiling with fewer cells.

Purpose of the Study:

• To develop a high-throughput metabolomics scheme for small cell quantities.
• To enable sensitive detection and analysis of intracellular metabolites.
• To facilitate faster cellular metabolic profiling.

Main Methods:

• Integration of 96-well plate cultivation and in-situ cell pretreatment.
• Dansylation labeling coupled with Liquid Chromatography-Mass Spectrometry (LC-MS).
• Analysis of metabolites within HepG2 cells (approx. 10^3 cells/well).

Main Results:

• Achieved high-throughput analysis with significantly fewer cells.
• Demonstrated good extraction efficiency and precision (RSD < 5%) for polar metabolites.
• Reported high metabolite recovery rates (89.7-106.3%) using isotope-labeled amino acids.

Conclusions:

• The developed method offers a high-throughput, sensitive approach for cellular metabolomics.
• This technique reduces cell requirements and speeds up sample preparation.
• The method is suitable for exploring cellular responses, such as fatty acid effects on HepG2 cells.