Abstract
A novel method for enhanced resolution, termed expansion mass spectrometry imaging, has been developed for lipid mass spectrometry imaging, utilizing existing commercially available mass spectrometers without necessitating modifications. This approach involves embedding tissue sections in a swellable polyelectrolyte gel, with the target biomolecules indirectly anchored to the gel network. By employing matrix-assisted laser desorption ionization mass spectrometry imaging, the method has realized an enhanced spatial resolution that surpasses the conventional resolution limits of commercial instruments by approximately 4.5 fold. This enhancement permits the detailed visualization of intricate structures within the mouse brain at a subcellular level, with a lateral resolution nearing 1 μm. As a physical technique for achieving resolution beyond standard capabilities, this readily adaptable approach presents a powerful tool for high-definition imaging in biological research.
Original language | English |
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Pages (from-to) | 2662-2670 |
Number of pages | 9 |
Journal | CCS Chemistry |
Volume | 6 |
Issue number | 11 |
DOIs | |
Publication status | Published - Nov 2024 |
Scopus Subject Areas
- General Chemistry
User-Defined Keywords
- expansion
- high resolution
- MALDI imaging
- mass spectrometry imaging
- molecular imaging
- spatial lipidomics
- subcellular imaging