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Tetrasaccharide iteration synthesis of a heparin-like dodecasaccharide and radiolabelling for in vivo tissue distribution studies

Hansen, Steen U.; Miller, Gavin J.; Cole, Claire; Rushton, Graham; Avizienyte, Egle; Jayson, Gordon C.; Gardiner, John M.


Steen U. Hansen

Claire Cole

Graham Rushton

Egle Avizienyte

Gordon C. Jayson

John M. Gardiner


Heparin-like oligosaccharides mediate numerous important biological interactions, of which many are implicated in various diseases. Synthetic improvements are central to the development of such oligosaccharides as therapeutics and, in addition, there are no methods to elucidate the pharmacokinetics of structurally defined heparin-like oligosaccharides. Here we report an efficient two-cycle [4+4+4] tetrasaccharide-iteration-based approach for rapid chemical synthesis of a structurally defined heparin-related dodecasaccharide, combined with the incorporation of a latent aldehyde tag, unmasked in the final step of chemical synthesis, providing a generic end group for labelling/conjugation. We exploit this latent aldehyde tag for 3H radiolabelling to provide the first example of this kind of agent for monitoring in vivo tissue distribution and in vivo stability of a biologically active, structurally defined heparin related dodecasaccharide. Such studies are critical for the development of related saccharide therapeutics, and the data here establish that a biologically active, synthetic, heparin-like dodecasaccharide provides good organ distribution, and serum lifetimes relevant to developing future oligosaccharide therapeutics.

Journal Article Type Article
Acceptance Date May 16, 2013
Publication Date Jul 5, 2013
Journal Nature Communications
Print ISSN 2041-1723
Peer Reviewed Peer Reviewed
Volume 4
Article Number 2016
Keywords Kidney, Animals, Mice, Mice, SCID, Tritium, Heparin, Oligosaccharides, Chromatography, Gel, Chromatography, High Pressure Liquid, Magnetic Resonance Spectroscopy, Reproducibility of Results, Isotope Labeling, Tissue Distribution, Female
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