Multivalent Interaction and Selectivities in Selectin Binding of Functionalized Gold Colloids Decorated with Carbohydrate Mimetics.

M. Roskamp, S. Enders, F. Pfrengle, S. Yekta, V. Dekaris, J. Dernedde, H.-U. Reissig, S. Schlecht – 2011

Colloidal gold particles with functionalized organic shells were applied as novel selectin binders. The ligand shell was terminated with different monocyclic carbohydrate mimetics as simplified analogs of the sLex unit found in biological selectin ligands. The multivalent presentation of the sulfated selectin binding epitopes on the gold particles led to extremely high binding affinities towards L- and P-selectin and IC50 values in the subnanomolar range. Depending on the ring size of the sulfated carbohydrate mimetic, its substitution pattern and its configuration, different selectivities for either L-selectin or P-selectin were obtained. These selectivities were not found for gold particles with simple acyclic sulfated alcohols, diols and triols in the ligand shell. In addition, the influence of the particle size and the thickness of the hydrophobic organic shell were systematically investigated.

Titel
Multivalent Interaction and Selectivities in Selectin Binding of Functionalized Gold Colloids Decorated with Carbohydrate Mimetics.
Verfasser
M. Roskamp, S. Enders, F. Pfrengle, S. Yekta, V. Dekaris, J. Dernedde, H.-U. Reissig, S. Schlecht
Datum
2011
Kennung
10.1039/C1OB05583F
Quelle/n
Zitierweise
Org. Biomol. Chem. 2011, 9, 7448-7456. 
Art
Text
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