Journal
BIOORGANIC & MEDICINAL CHEMISTRY LETTERS
Volume 22, Issue 1, Pages 313-318Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.bmcl.2011.11.010
Keywords
Agglutinin; Glycocluster; Glycocyclophane; Lectin; N-Glycosyl 1,2,3-triazoles
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Funding
- IRCSET
- Science Foundation Ireland [PI/IN1/B966, 08/SRC/B1393]
- EU [260600]
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The synthesis of nine bivalent lactosides (based on ditriazoles, diamides, a glycocyclophane and an acyclic analogue of the glycocyclophane) and one monovalent lactosyl triazole facilitated the assessment of the sensitivity of plant/animal lectins to this type of ligand display. The inhibitory potency of the compounds was determined in two assays of increasing biorelevance. These were solid-phase and cell binding set-ups. Hereby, the ability of the compounds to inhibit the binding of two plant agglutinins and the entire set of adhesion/growth-regulatory galectins from one organism (chicken) to a glycoprotein or to cell surfaces was systematically evaluated. Differential sensitivities were detected between plant and animal lectins and also between distinct galectin forms within the chicken series. Two of the bivalent probes can be considered as sensors for interlectin differences. Most pronounced were the selectivities of N-glycosyl 1,2,3-triazole derivatives for the chimera-type galectin and its proteolytically truncated version. (C) 2011 Elsevier Ltd. All rights reserved.
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