The emerging field of lipidomics has been made possible because of advances in mass spectrometry, and in particular tandem mass spectrometry of lipid ions generated by electrospray ionization. The ability to carry out basic biochemical studies of lipids using electrospray ionization is predicated upon understanding the behaviour of lipid derived ions following collision induced decomposition and mechanisms of product ion formation. During the past 20 years, a wealth of information has been generated about lipid molecules that are now analysed by mass spectrometry, however there is no central source where one can obtain basic information about how these very diverse biomolecules behave following collisional activation.
This book brings together, in one volume, this information so that investigators considering using tandem mass spectrometry to structurally characterize lipids or to quantitate their occurrence in a biological matrix, will have a convenient source to review mechanism of decomposition reactions related to the diversity of lipid structures.
A separate chapter is devoted to each of seven major lipid classes including fatty acids, eicosanoids and bioactive lipid mediators, fatty acyl esters and amides, glycerol esters, glycerophospholipids, sphingolipids, and steroids. Mechanistic details are provided for understanding the pathways of formation of major product ions and ions used for structural characterization. In most cases specific ancillary information has been critical to understand the pathways, including isotope labeling and high resolution analysis of precursor and product ions. For a few specific examples such data is missing and pathways are proposed as a means to initiate further mass spectral experiments to prove or disprove pathway hypotheses. While this work largely centres on the lipid biochemistry of animal (mammalian) systems, general principles can be taken from the specific examples and applied to lipid biochemistry found in plants, fungi, prokaryotes and archeal organisms.
Table des matières
Introduction; Fatty Acids; Bioactive Lipid Mediators; Glycerolipids; Glycerolphospholipids; Sphingolipids; Sterol Lipids; Index
A propos de l’auteur
Robert C Murphy graduated from Massachusetts Institute of Technology with a Ph D in chemistry and he is currently a University Distinguished Professor at the University of Colorado. He has worked in the area of mass spectrometry and eicosanoid biochemistry for approximately 40 years with much of his research activities centered on the use of mass spectrometry to studies of arachidonic acid biochemistry and formation of the biologically active leukotriene mediators. His interests also include the structural characterizaton of bioactive lipid products derived from the reaction of reactive oxygen species with cellular lipids. Over 400 peer-reviewed papers in scientific journals and several books concerning mass spectrometry of lipids have been authored by him.
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