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Updated: Feb 3, 2026
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A New Approach for the Comparative Analysis of Multiprotein Complexes Based on 15N Metabolic Labeling and Quantitative Mass Spectrometry
Published on: March 13, 2014
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A versatile LC-MS/MS approach for comprehensive, quantitative analysis of central metabolic pathways
Adhish Walvekar1, Zeenat Rashida1,2, Hemanth Maddali1
1Institute for Stem Cell biology and Regenerative Medicine (inStem), Bangalore, Karnataka, 560065, India.
Wellcome Open Research
|October 23, 2018
Summary
This study introduces a versatile liquid chromatography-mass spectrometry method for analyzing multiple metabolic pathways simultaneously. This approach simplifies cellular metabolism analysis and supports quantitative metabolic flux experiments.
Area of Science:
- Metabolomics
- Biochemistry
- Analytical Chemistry
Background:
- Liquid chromatography-mass spectrometry (LC-MS/MS) is crucial for metabolite identification and quantitation in cellular metabolism studies.
- Existing LC-MS/MS methods often require specific conditions, limiting simultaneous analysis across multiple pathways.
- Current techniques typically focus on analyzing single metabolic pathways, necessitating multiple methods for comprehensive analysis.
Purpose of the Study:
- To develop a single-column based LC-MS/MS method for simultaneous analysis of multiple metabolic pathways.
- To enable quantitative, stable isotope-based metabolic flux experiments beyond steady-state measurements.
- To provide broadly applicable methods that simplify cellular metabolism analysis.
Main Methods:
- Development of a single-column liquid chromatography-mass spectrometry (LC-MS/MS) method.
- Application of the method for simultaneous coverage of central carbon, amino acid, and nucleotide metabolism.
- Utilizing stable isotope labeling for quantitative metabolic flux analysis.
Main Results:
- Demonstrated simultaneous coverage of multiple key metabolic pathways using a single LC-MS/MS method.
- Successfully applied the method for quantitative, stable isotope-based metabolic flux experiments.
- Presented expected kinetics of label accumulation for various pathways.
Conclusions:
- The presented single-column LC-MS/MS method simplifies and broadens the scope of metabolic pathway analysis.
- This approach reduces the need for multiple chromatographic methods, enhancing efficiency.
- Simple labeling experiments with this method facilitate a comprehensive understanding of cellular metabolic states.
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