期刊
JOURNAL OF LIPID RESEARCH
卷 51, 期 8, 页码 2295-2302出版社
ELSEVIER
DOI: 10.1194/jlr.M005488
关键词
ocular lens; sphingolipid; matrix-assisted laser desorption/ionization
资金
- Sigrid Juselius Foundation
- Finnish Eye Foundation
- Academy of Finland [122354, 114292]
- University of Helsinki [2105060]
- Ministry of Education, Youth, and Sports of the Czech Republic [LC07017, MSM 6198959216]
- Institute of Microbiology, Academy of Sciences of the Czech Republic [AV0Z50200510]
- Marie Curie International Reintegration grant
- Academy of Finland (AKA) [122354, 122354, 114292, 114292] Funding Source: Academy of Finland (AKA)
The intraocular lens contains high levels of both cholesterol and sphingolipids, which are believed to be functionally important for normal lens physiology. The aim of this study was to explore the spatial distribution of sphingolipids in the ocular lens using mass spectrometry imaging (MSI). Matrix-assisted laser desorption/ionization (MALDI) imaging with ultra high resolution Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) was used to visualize the lipid spatial distribution. Equatorially-cryosectioned, 12 mu m thick slices of tissue were thaw-mounted to an indium-tin oxide (ITO) glass slide by soft-landing to an ethanol layer. This procedure maintained the tissue integrity. After the automated MALDI matrix deposition, the entire lens section was examined by MALDI MSI in a 150 mu m raster. We obtained spatial- and concentration-dependent distributions of seven lens sphingomyelins (SM) and two ceramide-1-phosphates (CerP), which are important lipid second messengers. Glycosylated sphingolipids or sphingolipid breakdown products were not observed. Owing to ultra high resolution MS, all lipids were identified with high confidence, and distinct distribution patterns for each of them are presented.jlr The distribution patterns of SMs provide an understanding of the physiological functioning of these lipids in clear lenses and offer a novel pathophysiological means for understanding diseases of the lens.-Vidov similar to V., J. Pol, M. Volny, P. Novak, V. Havlicek, S. K. Wiedmer, and J. M. Holopainen. Visualizing spatial lipid distribution in porcine lens by MALDI imaging high-resolution mass spectrometry. J. Lipid Res. 2010. 51: 2295-2302.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据