Advances in Tandem Mass Spectrometry Imaging for Next-Generation Spatial Metabolomics

Area of Science:

• Metabolomics
• Mass Spectrometry Imaging (MSI)
• Biomolecular Analysis

Background:

• Spatial metabolomics using mass spectrometry imaging (MSI) reveals metabolite distributions in tissues.
• Accurate metabolite identification, including distinguishing isomers/isobars, is vital for understanding biological functions and disease biomarkers.
• Tandem mass spectrometry (MS/MS) provides structural information but has limited coverage in conventional MSI.

Purpose of the Study:

• To highlight recent advancements in MS/MS imaging strategies for spatial metabolomics.
• To address the challenge of achieving high-coverage, structure-resolving spatial mapping of biomolecules.
• To improve metabolite annotation and spatial distribution analysis in biological tissues.

Main Methods:

• Focuses on advanced MS/MS imaging strategies.
• Discusses overcoming limitations of sample amount per tissue pixel for MS/MS scans.
• Reviews techniques for enhancing structural information acquisition in MSI.

Main Results:

• Recent developments enable higher coverage in MS/MS-based spatial metabolomics.
• Improved strategies allow for more detailed molecular structural information from tissue samples.
• These advancements facilitate better correlation of metabolite functions with spatial patterns.

Conclusions:

• Advanced MS/MS imaging is key to unlocking high-coverage spatial metabolomics.
• These techniques are essential for precise biomolecule identification and spatial mapping.
• The findings support the potential for enhanced disease biomarker discovery and fundamental biological research.