Zebrafish embryonic lipidomic analysis reveals that the yolk cell is metabolically active in processing lipid

Sanigorski, A; Gibert, Y; Meikle, PJ; Sinclair, AJ; Mellett, NA; Fraher, D
Abstract
The role of lipids in providing energy and structural cellular components during vertebrate development is poorly understood. To elucidate these roles further, we visualized lipid deposition and examined expression of key lipid-regulating genes during zebrafish embryogenesis. We also conducted a semiquantitative analysis of lipidomic composition using liquid chromatography (LC)-mass spectrometry. Finally, we analyzed processing of boron-dipyrromethene (BODIPY) lipid analogs injected into the yolk using thin layer chromatography. Our data reveal that the most abundant lipids in the embryo are cholesterol, phosphatidylcholine, and triglyceride. Moreover, we demonstrate that lipids are processed within the yolk prior to mobilization to the embryonic body. Our data identify a metabolically active yolk and body resulting in a dynamic lipid composition. This provides a foundation for studying lipid biology during normal or pharmacologically compromised embryogenesis. Copyright © 2016 The Authors. Published by Elsevier Inc. All rights reserved.
Journal CELL REP
ISSN 2211-1247
Published 16 Feb 2016
Volume 14
Issue 6
Pages 1317-29
DOI 10.1016/j.celrep.2016.01.016
Type Journal Article
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