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Quantitative metabolome analysis using capillary electrophoresis mass spectrometry
Tomoyoshi Soga1, Yoshiaki Ohashi, Yuki Ueno
1Institute for Advanced Biosciences, Keio University, Tsuruoka, Yamagata 997-0017, Japan. soga@sfc.keio.ac.jp
Journal of Proteome Research
|October 30, 2003
Summary
A novel capillary electrophoresis-mass spectrometry method offers comprehensive analysis of charged metabolites. This technique identified 352 standards and 1692 metabolites in Bacillus subtilis, revealing key changes during sporulation.
Area of Science:
- Metabolomics
- Analytical Chemistry
- Biochemistry
Background:
- Accurate analysis of charged metabolites is crucial for understanding biological processes.
- Existing methods for metabolite quantification can be limited in scope and sensitivity.
Purpose of the Study:
- To develop and validate a new capillary electrophoresis-mass spectrometry (CE-MS) approach for comprehensive and quantitative analysis of charged metabolites.
- To demonstrate the utility of the developed method in analyzing complex biological samples.
Main Methods:
- Charged metabolites were separated using capillary electrophoresis (CE) based on charge and size.
- Selective detection was achieved using mass spectrometry (MS) by monitoring a wide range of mass-to-charge (m/z) values.
- The method was applied to analyze metabolic standards and extracts from Bacillus subtilis.
Main Results:
- The CE-MS method enabled the determination of 352 metabolic standards.
- Analysis of Bacillus subtilis extracts identified 1692 metabolites.
- Significant metabolic changes were observed during Bacillus subtilis sporulation.
Conclusions:
- The proposed CE-MS method provides a powerful tool for comprehensive and quantitative analysis of charged metabolites.
- This approach is effective for characterizing metabolic profiles in complex biological systems.
- The findings highlight the utility of CE-MS in uncovering dynamic metabolic shifts, such as those occurring during bacterial sporulation.