Protocols in Current Issue
    Triacylglycerol Measurement in HeLa Cells
    Authors:  Ximing Du and Hongyuan Yang, date: 12/20/2020, view: 752, Q&A: 0

    Lipid droplets store triacylglycerols (triglycerides) and sterol esters to regulate lipid and energy homeostasis. Triacylglycerol measurement is often performed during the investigation of lipid droplet formation and growth. This protocol describes a reliable method using a fluorometric lipid quantification kit to measure triacylglycerols

    Total Triglyceride Quantification in Caenorhabditis elegans
    Authors:  Anjali Sandhu and Varsha Singh, date: 11/20/2020, view: 923, Q&A: 0
    [Abstract] Several studies suggest an important role of lipid metabolism in regulating longevity of Caenorhabditis elegans. Therefore, assays to quantify lipids have enormous value in understanding aging and pathologies associated with it. Approximately 70% of lipid metabolism genes in the nematode have orthologs in humans. Amenability of C. elegans ...
    Quantification of Fatty Acids in Mammalian Tissues by Gas Chromatography–Hydrogen Flame Ionization Detection
    [Abstract] In mammalian organisms, fatty acids (FAs) exist mostly in esterified forms, as building blocks of phospholipids, triglycerides, and cholesteryl esters, while some exist as non-esterified free FAs. The absolute quantification of FA species in total lipids or in a specific lipid class is critical in lipid-metabolism studies. To quantify FAs in ...
    GC-MS-Based Analysis of Methanol: Chloroform-extracted Fatty Acids from Plant Tissues
    Authors:  Manish Kumar Patel, Shubhashis Das and Jitendra Kumar Thakur, date: 09/20/2018, view: 8408, Q&A: 0
    [Abstract] Fatty acids (FAs) are carboxylic acids with long aliphatic chains that may be straight, branched and saturated or unsaturated. Most of the naturally occurring plant FAs contains an even number of carbon (C4-C24). FAs are used in food and pharmacological industries due to their nutritional importance. In addition, FAs are considered as a promising ...
    Assessment of Uptake and Biodistribution of Radiolabeled Cholesterol in Mice Using Gavaged Recombinant Triglyceride-rich Lipoprotein Particles (rTRL)
    Authors:  Anna Worthmann, Clara John and Joerg Heeren, date: 07/05/2018, view: 3306, Q&A: 0
    [Abstract] The here described method can be used to estimate the uptake of orally provided cholesterol in mice. Briefly, mice are gavaged with radiolabeled cholesterol and 4 h later, organ distribution of the radiolabel is determined by liquid scintillation counting. The method has been applied successfully to determine dietary cholesterol handling of mice ...
    Tracking Lipid Transfer by Fatty Acid Isotopolog Profiling from Host Plants to Arbuscular Mycorrhiza Fungi
    Authors:  Andreas Keymer, Claudia Huber, Wolfgang Eisenreich and Caroline Gutjahr, date: 04/05/2018, view: 4838, Q&A: 0
    [Abstract] Lipid transfer from host plants to arbuscular mycorrhiza fungi was hypothesized for several years because sequenced arbuscular mycorrhiza fungal genomes lack genes encoding cytosolic fatty acid synthase (Wewer et al., 2014; Rich et al., 2017). It was finally shown by two independent experimental approaches (Jiang et al., ...
    Fatty Acid Content and Composition of Triacylglycerols of Chlorella kessleri
    Authors:  Motohide Aoki and Norihiro Sato, date: 01/05/2018, view: 5590, Q&A: 0
    [Abstract] Triacylglycerols (TAGs) are esters formed from one glycerol and three fatty acids. TAGs are induced to accumulate in algal cells under environmental stress conditions including nutrient-limitation, hyperosmosis, and low temperature, for the storage of metabolic energy and carbon, and also for the consumption of excess energy (e.g., Hirai ...
    Lipidomic Analysis of Caenorhabditis elegans Embryos
    Authors:  Hung-Chi Yang, Cheng-Yu Hung, Yi-Yun Pan, Szecheng J Lo and Daniel Tsun-Yee Chiu, date: 09/20/2017, view: 6689, Q&A: 0
    [Abstract] Metabolomic is an emerging field of system biology. Lipidomic, a branch of metabolomic, aims to characterize lipophilic metabolites in biological systems. Caenorhabditis elegans (C. elegans) is a genetically tractable and versatile animal model for novel discovery of lipid metabolism. In addition, C. elegans embryo is ...
    Sterol Analysis in Kluyveromyces lactis
    Authors:  Yvetta Gbelska, Nora Toth Hervay, Marcela Morvova and Alexandra Konecna, date: 09/05/2017, view: 4619, Q&A: 0
    [Abstract] Sterols are essential lipids of most eukaryotic cells with multiple functions (structural, regulatory and developmental). Sterol profile of yeast cells is often determined during the studies of ergosterol synthesis mutants used to uncover a number of functions for various sterols in yeast cells. Molecular studies of ergosterol biosynthesis have ...
    Metabolic Heavy Isotope Labeling to Study Glycerophospholipid Homeostasis of Cultured Cells
    Authors:  Satu Hänninen, Pentti Somerharju and Martin Hermansson, date: 05/05/2017, view: 5031, Q&A: 0
    [Abstract] Glycerophospholipids consist of a glycerophosphate backbone to which are esterified two acyl chains and a polar head group. The head group (e.g., choline, ethanolamine, serine or inositol) defines the glycerophospholipid class, while the acyl chains together with the head group define the glycerophospholipid molecular species. Stable ...

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