Lipid Profiling of 20 Mammalian Cells by Capillary Microsampling Combined with High-Resolution Spectral Stitching Nanoelectrospray Ionization Direct-Infusion Mass Spectrometry.
Tianrun XuHang LiDisheng FengPeng DouXianzhe ShiChunxiu HuGuo-Wang XuPublished in: Analytical chemistry (2021)
Studies of cellular metabolism can provide profound insights into the underlying molecular mechanisms and metabolic function. To date, the majority of cellular metabolism studies based on chromatography-mass spectrometry (MS) require population cells to obtain informative metabolome. These methods are not only time-consuming but also not suitable for amount-limited cell samples such as circulating tumor cells, stem cells, and neurons. Therefore, it is extremely essential to develop analytical methods enabling to detect metabolome from tens of cells in a high-throughput and high-sensitivity way. In this work, a novel platform for rapid and sensitive detection of lipidome in 20 mammalian cells was proposed using capillary microsampling combined with high-resolution spectral stitching nanoelectrospray ionization direct-infusion MS. It can be used to collect cells rapidly and accurately via the capillary microprobe, extract lipids directly in a 96-well plate using a spray solvent, and detect more than 500 lipids covering 19 lipid subclasses within 3 min. This novel platform was successfully applied to study the lipid features of different cancer cell types and subtypes as well as target cells from tissue samples. This study provides a strategy for determining the lipid species with rich information in tens of cells and demonstrates great potential for clinical applications.
Keyphrases
- mass spectrometry
- induced apoptosis
- high resolution
- cell cycle arrest
- high throughput
- stem cells
- liquid chromatography
- circulating tumor cells
- sensitive detection
- fatty acid
- gas chromatography
- cell death
- oxidative stress
- multiple sclerosis
- low dose
- healthcare
- capillary electrophoresis
- ms ms
- high performance liquid chromatography
- bone marrow
- tandem mass spectrometry
- magnetic resonance imaging
- magnetic resonance
- signaling pathway
- quantum dots
- autism spectrum disorder
- anti inflammatory
- cell therapy