Micro-Lensed Fiber Laser Desorption Mass Spectrometry Imaging Reveals Subcellular Distribution of Drugs within Single Cells.
Angew Chem Int Ed Engl
; 59(41): 17864-17871, 2020 10 05.
Article
em En
| MEDLINE
| ID: mdl-32602223
ABSTRACT
The visualization of temporal and spatial changes in the intracellular environment has great significance for chemistry and bioscience research. Mass spectrometry imaging (MSI) plays an important role because of its unique advantages, such as being label-free and high throughput, yet it is a challenge for laser-based techniques due to limited lateral resolution. Here, we develop a simple, reliable, and economic nanoscale MSI approach by introducing desorption laser with a micro-lensed fiber. Using this integrated platform, we achieved 300â
nm resolution MSI and successfully visualized the distribution of various small-molecule drugs in subcellular locations. Exhaustive dynamic processes of anticancer drugs, including releasing from nanoparticle carriers entering nucleus of cells, can be readily acquired on an organelle scale. Considering the simplicity and universality of this nanoscale desorption device, it could be easily adapted to most of laser-based mass spectrometry applications.
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Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Espectrometria de Massas
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Frações Subcelulares
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Preparações Farmacêuticas
Idioma:
En
Ano de publicação:
2020
Tipo de documento:
Article