The peptides that bind to oligosaccharide of glycolipid were identified and their function was assayed. The monolayers of ganglioside were employed for an affinity selection by phage-displayed random libraries, and the ganglioside-binding peptides were selected. A synthetic peptide p3 inhibited the cholera toxin binding to GM1 (Galβ1-3GalNAcβ1-4(Neu5Acα2-3) Galβ1-4Glcβ1-1′Cer) with IC50 of 1 μM. A raft-like hybrid lipid bilayer was prepared and the binding of the peptide were visualized by atomic force microscopy, indicated that the peptide was specific to glycocluster in the lipid membrane. Furthermore, GM3 (Neu5Acα2- 3Galβ1-4Glcβ1-1′′Cer)-binding peptides bound to cells and the corresponding N-stearoyl derivatives inhibited the infection of Madin-Darby canine kidney cells by influenza virus, which recognizes α2,3- and α2,6-linked sialylgalactose structures.
|出版ステータス||Published - 2006 12月 1|
|イベント||55th Society of Polymer Science Japan Symposium on Macromolecules - Toyama, Japan|
継続期間: 2006 9月 20 → 2006 9月 22
|Other||55th Society of Polymer Science Japan Symposium on Macromolecules|
|Period||06/9/20 → 06/9/22|
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