Chemical synthesis, modification and mimicry of the GPI anchor

Lear, Martin and Reux, Bastien and Sekar, Karthik (2012) Chemical synthesis, modification and mimicry of the GPI anchor. In: GPI membrane anchors: the much needed link. Bentham Science Publishers Ltd, pp. 64-82. ISBN 9781608051236

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Book eISBN 978-1-60805-123-6 - chapter 5 - pp. 64 (20 pages; with cover art).pdf

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Abstract

Glycophosphatidylinositol (GPI) anchors are complex glycolipids which typically anchor extracellular proteins onto the lipid membranes of eukaryotic cells. Although providing a natural platform in which to present or transfer functional molecules onto cells and viruses, GPI anchors are difficult biologics to generate in a homogenously pure form. It is also difficult, though not impossible, to elucidate and confirm their structures unambiguously. Today, chemical synthesis offers not only the versatility to make both complex and simplified GPI mimics and tools, but also the means to directly relate an exact GPI structure to its biological function. These synthetic GPIs may be further modified to allow the chemical attachment of any functional molecule, and not solely proteins, in a biologically compatible manner. Fluorescent labels and affinity tags can be exploited to investigate a particular biological response or process. Alternatively, synthetic glycans of GPI anchors can be employed to elicit a particular immune response or to generate GPI-specific antibodies. In this chapter, we shall overview the structure and synthesis of GPI anchors, and give perspectives on the biological study and therapeutic potential of synthetically-derived GPI biologics.

Keywords:Glycolipids, Total synthesis, Biomimicry, Glycobiology
Subjects:F Physical Sciences > F165 Biomolecular Chemistry
F Physical Sciences > F160 Organic Chemistry
F Physical Sciences > F163 Bio-organic Chemistry
Divisions:College of Science > School of Chemistry
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ID Code:17139
Deposited On:23 Apr 2015 14:22

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