PMID- 24852167 OWN - NLM STAT- MEDLINE DCOM- 20151109 LR - 20211021 IS - 1539-7262 (Electronic) IS - 0022-2275 (Print) IS - 0022-2275 (Linking) VI - 55 IP - 9 DP - 2014 Sep TI - Spatiotemporal lipid profiling during early embryo development of Xenopus laevis using dynamic ToF-SIMS imaging. PG - 1970-80 LID - 10.1194/jlr.D048660 [doi] AB - Time-of-flight secondary ion mass spectrometry (ToF-SIMS) imaging has been used for the direct analysis of single intact Xenopus laevis embryo surfaces, locating multiple lipids during fertilization and the early embryo development stages with subcellular lateral resolution ( approximately 4 mum). The method avoids the complicated sample preparation for lipid analysis of the embryos, which requires selective chemical extraction of a pool of samples and chromatographic separation, while preserving the spatial distribution of biological species. The results show ToF-SIMS is capable of profiling multiple components (e.g., glycerophosphocholine, SM, cholesterol, vitamin E, diacylglycerol, and triacylglycerol) in a single X. laevis embryo. We observe lipid remodeling during fertilization and early embryo development via time course sampling. The study also reveals the lipid distribution on the gamete fusion site. The methodology used in the study opens the possibility of studying developmental biology using high resolution imaging MS and of understanding the functional role of the biological molecules. CI - Copyright (c) 2014 by the American Society for Biochemistry and Molecular Biology, Inc. FAU - Tian, Hua AU - Tian H AD - Manchester Institute of Biotechnology, School of Chemical Engineering and Analytical Science, University of Manchester, Manchester, UK. FAU - Fletcher, John S AU - Fletcher JS AD - Manchester Institute of Biotechnology, School of Chemical Engineering and Analytical Science, University of Manchester, Manchester, UK. FAU - Thuret, Raphael AU - Thuret R AD - Faculty of Life Science, University of Manchester, Manchester, UK. FAU - Henderson, Alex AU - Henderson A AD - Manchester Institute of Biotechnology, School of Chemical Engineering and Analytical Science, University of Manchester, Manchester, UK. FAU - Papalopulu, Nancy AU - Papalopulu N AD - Faculty of Life Science, University of Manchester, Manchester, UK. FAU - Vickerman, John C AU - Vickerman JC AD - Manchester Institute of Biotechnology, School of Chemical Engineering and Analytical Science, University of Manchester, Manchester, UK. FAU - Lockyer, Nicholas P AU - Lockyer NP AD - Manchester Institute of Biotechnology, School of Chemistry, University of Manchester, Manchester, UK. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140522 PL - United States TA - J Lipid Res JT - Journal of lipid research JID - 0376606 SB - IM MH - Animals MH - Embryonic Development MH - Female MH - Imaging, Three-Dimensional MH - *Lipid Metabolism MH - Male MH - Mass Spectrometry MH - Xenopus laevis/embryology/*metabolism MH - Zygote/metabolism PMC - PMC4617352 OTO - NOTNLM OT - embryo OT - mass spectrometry imaging OT - oocyte OT - time-of-flight secondary ion mass spectrometry EDAT- 2014/05/24 06:00 MHDA- 2015/11/10 06:00 PMCR- 2015/09/01 CRDT- 2014/05/24 06:00 PHST- 2014/05/24 06:00 [entrez] PHST- 2014/05/24 06:00 [pubmed] PHST- 2015/11/10 06:00 [medline] PHST- 2015/09/01 00:00 [pmc-release] AID - S0022-2275(20)35672-8 [pii] AID - d048660 [pii] AID - 10.1194/jlr.D048660 [doi] PST - ppublish SO - J Lipid Res. 2014 Sep;55(9):1970-80. doi: 10.1194/jlr.D048660. Epub 2014 May 22.