Combining rapid 2D NMR experiments with novel pre-processing workflows and MIC quality measures for metabolomics

Area of Science:

• Metabolomics
• Nuclear Magnetic Resonance (NMR) Spectroscopy

Background:

• Two-dimensional (2D) NMR, specifically COSY, offers metabolomics results comparable to 1D NMR with simpler preprocessing.
• A significant limitation to widespread 2D NMR adoption in metabolomics is the lengthy experiment duration.

Purpose of the Study:

• To address the time constraints of 2D COSY NMR in metabolomics.
• To evaluate faster acquisition techniques, including reduced transients and Non-Uniform Sampling (NUS).

Main Methods:

• Implemented novel 2D preprocessing workflows for faster COSY acquisition.
• Utilized Metabolomic Informative Content (MIC) indexes for data comparison.
• Employed Global Peak List (GPL) and Vectorization workflows for data preprocessing.

Main Results:

• Conventional COSY with one transient per increment and 50% NUS acquisition showed comparable MIC results to standard COSY (four transients).
• Faster acquisition methods significantly reduced experiment time without compromising data quality.

Conclusions:

• Reduced transient counts and NUS in COSY NMR are viable strategies for high-throughput metabolomics.
• These accelerated 2D COSY techniques facilitate broader application in metabolomics research.