Fabry disease: renal sphingolipid distribution in the alpha-Gal A knockout mouse model by mass spectrometric and immunohistochemical imaging

0444865 - MBÚ 2016 RIV DE eng J - Journal Article
Kuchař, L. - Faltýsková, Helena - Ledvinová, J. - Krásný, Lukáš - Dobrovolný, R. - Hůlková, H. - Volný, Michael - Strohalm, Martin - Lemr, Karel - Kryšpínová, L. - Asfaw, B. - Rybová, J. - Desnick, R.J. - Havlíček, Vladimír
Fabry disease: renal sphingolipid distribution in the alpha-Gal A knockout mouse model by mass spectrometric and immunohistochemical imaging.
Analytical and Bioanalytical Chemistry. Roč. 407, č. 8 (2015), s. 2283-2291. ISSN 1618-2642. E-ISSN 1618-2650
R&D Projects: GA MŠMT(CZ) LD13038; GA ČR(CZ) GAP206/12/1150
Institutional support: RVO:61388971
Keywords : Fabry disease * Kidney * Glycosphingolipids
Subject RIV: CE - Biochemistry
Impact factor: 3.125, year: 2015

Fabry disease is an X-linked lysosomal storage disease due to deficient alpha-galactosidase A (alpha-Gal A) activity and the resultant lysosomal accumulation of globotriaosylceramide (Gb3) and related lipids primarily in blood vessels, kidney, heart, and other organs. The renal distribution of stored glycolipid species in the alpha-Gal A knockout mouse model was compared to that in mice to assess relative distribution and absolute amounts of accumulated sphingolipid isoforms. Twenty isoforms of five sphingolipid groups were visualized by mass spectrometry imaging (MSI), and their distribution was compared with immunohistochemical (IHC) staining of Gb3, the major stored glycosphingolipid in consecutive tissue sections. Quantitative bulk lipid analysis of tissue sections was assessed by electrospray ionization with tandem mass spectrometry (ESI-MS/MS). In contrast to the findings in wild-type mice, all three analytical techniques (MSI, IHC, and ESI-MS/MS) revealed increases in Gb3 isoforms and ceramide dihexosides (composed mostly of galabiosylceramides), respectively. To our knowledge, this is the first report of the distribution of individual molecular species of Gb3 and galabiosylceramides in kidney sections in Fabry disease mouse. In addition, the spatial distribution of ceramides, ceramide monohexosides, and sphingomyelin forms in renal tissue is presented and discussed in the context of their biosynthesis
Permanent Link: http://hdl.handle.net/11104/0247336