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Article
Open AccessLiver ACOX1 regulates levels of circulating lipids that promote metabolic health through adipose remodeling
The liver gene expression of the peroxisomal β-oxidation enzyme acyl-coenzyme A oxidase 1 (ACOX1), which catabolizes very long chain fatty acids (VLCFA), increases in the context of obesity, but how this pathw...
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Isolation and Mass Spectrometry-Based Profiling of Major Lipids in Brown Adipose Tissue
Brown adipose tissue (BAT) is an important regulator of metabolic homeostasis through its role in adaptive thermogenesis and control of whole-body glucose metabolism. Lipids play multiple roles in BAT function...
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Article
Structural characterization of phospholipids and sphingolipids by in-source fragmentation MALDI/TOF mass spectrometry
Phospholipids (PLs) and sphingolipids (SLs) perform critical structural and biological functions in cells. The structure of these lipids, including the stereospecificity and double-bond position of fatty acyl ...
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Mass Spectrometry-Based Lipidomics: An Overview
Over the last few decades, MS-based lipidomics has emerged as a powerful tool to study lipids in biological systems. This success is driven by the constant demand for complete and reliable data. The improvemen...
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Comprehensive Mouse Skin Ceramide Analysis on a Solid-Phase and TLC Separation with High-Resolution Mass Spectrometry Platform
Lipidomic analyses by mass spectrometry (MS) of epidermal ceramides, a large family of lipids crucial to the permeability barrier of the skin, have been reported previously. To ensure the accuracy of lipid ide...
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Mass Spectrometry-Based Shotgun Lipidomics Using Charge-Switch Derivatization for Analysis of Complex Long-Chain Fatty Acids
Charge-switch derivatization to convert long-chain fatty acids (LCFAs) to their N-(4-aminomethylphenyl) pyridinium (AMPP) derivatives (FA-AMPP derivative) drastically increases their sensitivity (>102) detected b...
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Ceramide Analysis by Multiple Linked-Scan Mass Spectrometry Using a Tandem Quadrupole Instrument
Ceramides are a special class of sphingolipids and play a central role in sphingolipid metabolism, and have diverse structures. In this book chapter, tandem quadrupole mass spectrometric approaches applying mu...
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Shotgun Lipidomic Analysis of Leishmania Cells
To understand the interplay of lipids between Leishmania promastigotes, amastigotes, and vertebrate host cells, a robust method for cultivating Leishmania parasites, lipid extraction, and shotgun lipidomic analys...
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Characterization of the Uncommon Lipid Families in Corynebacterium glutamicum by Mass Spectrometry
This book chapter provides readers the step-by-step instruction for cell growth, lipid isolation, and lipid analysis to obtain the lipidome of Corynebacterium glutamicum (C. glutamicum) in the genus Corynebacteri...
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Article
Open AccessFatty acid transport protein 4 is required for incorporation of saturated ultralong-chain fatty acids into epidermal ceramides and monoacylglycerols
Fatty acid transport protein 4 (FATP4) is an acyl-CoA synthetase that is required for normal permeability barrier in mammalian skin. FATP4 (SLC27A4) mutations cause ichthyosis prematurity syndrome, a nonlethal di...
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Open AccessPhosphatidylcholine synthesis through cholinephosphate cytidylyltransferase is dispensable in Leishmania major
Phosphatidylcholine (PC) is a major cell membrane constituent and precursor of important second messengers. In Leishmania parasites, PC synthesis can occur via the choline branch of the Kennedy pathway, the N-met...
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Open AccessLipid metabolism of phenol-tolerant Rhodococcus opacus strains for lignin bioconversion
Lignin is a recalcitrant aromatic polymer that is a potential feedstock for renewable fuel and chemical production. Rhodococcus opacus PD630 is a promising strain for the biological upgrading of lignin due to its...
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Correction to: Characterization of Long-Chain Fatty Acid as N-(4-Aminomethylphenyl) Pyridinium Derivative by MALDI LIFT-TOF/TOF Mass Spectrometry
In the preceding article “Characterization of Long-Chain Fatty Acid as N-(4-Aminomethylphenyl) Pyridinium Derivative by MALDI LIFT-TOF/TOF Mass Spectrometry” by Frankfater et al., errors in Figs. 2 and 3 have ...
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Publisher Correction: Mycobacterium tuberculosis carrying a rifampicin drug resistance mutation reprograms macrophage metabolism through cell wall lipid changes
In the version of this Letter originally published, in Fig. 2d, in the third graph, the label for the y axis was incorrect as ‘TNF-α (pg ml–1)’; it should have read ‘IL-1β (pg ml–1)’. This has now been corrected.
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Article
Mycobacterium tuberculosis carrying a rifampicin drug resistance mutation reprograms macrophage metabolism through cell wall lipid changes
Tuberculosis is a significant global health threat, with one-third of the world’s population infected with its causative agent Mycobacterium tuberculosis (Mtb). The emergence of multidrug-resistant (MDR) Mtb that...
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Article
Mass spectrometry-based shotgun lipidomics – a critical review from the technical point of view
Over the past decade, mass spectrometry (MS)-based “shotgun lipidomics” has emerged as a powerful tool for quantitative and qualitative analysis of the complex lipids in the biological system. The aim of this ...
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Article
Characterization of Long-Chain Fatty Acid as N-(4-Aminomethylphenyl) Pyridinium Derivative by MALDI LIFT-TOF/TOF Mass Spectrometry
Charge remote fragmentation (CRF) elimination of CnH2n+2 residues along the aliphatic tail of long chain fatty acid is hall mark of keV high-energy CID fragmentation process. It is an important fragmentation path...
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Article
Characterization of Hydroxyphthioceranoic and Phthioceranoic Acids by Charge-Switch Derivatization and CID Tandem Mass Spectrometry
Hydroxyphthioceranoic (HPA) and phthioceranoic (PA) acids are polymethylated long chain fatty acids with and without a hydroxyl group attached to the carbon next to the terminal methyl-branched carbon distal t...
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Article
Characterization of polar lipids of Listeria monocytogenes by HCD and low-energy CAD linear ion-trap mass spectrometry with electrospray ionization
Listeria monocytogenes (L. monocytogenes) is a facultative, Gram-positive, food-borne bacterium, which causes serious infections. Although it is known that lipids play important roles in the surv...
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Article
Structural Distinction of Diacyl-, Alkylacyl, and Alk-1-Enylacyl Glycerophosphocholines as [M – 15]– Ions by Multiple-Stage Linear Ion-Trap Mass Spectrometry with Electrospray Ionization
We describe a linear ion-trap (LIT) multiple-stage (MSn) mass spectrometric approach towards differentiation of alkylacyl, alk-1-enylacyl- and diacyl-glycerophoscholines (PCs) as the [M – 15]– ions desorbed by el...
