Journal
TETRAHEDRON
Volume 68, Issue 35, Pages 7148-7154Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2012.06.035
Keywords
Glyco-quantum dots; NMR; SPR; Galectin-3; N-Acetyl lactosamine; Cluster effect
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Funding
- Natural Science Foundation of China [90713004, 20732001]
- State New Drug Innovation [2009ZX09103-044, 2009ZX09501-011]
- National Basic Research Program of China [2012CB822100]
- State Key Laboratory of Natural and Biomimetic Drugs and Peking University
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Ternary core/shell CdSeS/ZnS-QDs coated with N-acetyl lactosamine was prepared as a fluorescent probe to study the interactions of N-acetyl lactosamine and galectin-3. The synthesis of N-acetyl lactosamine was achieved through the 'azidoiodoglycosylation' method. The amount of ligand coated on QDs was determined by H-1 NMR and ICP-OES. The interactions between carbohydrates and galectin-3 were measured using SPR. The results revealed that the affinity of galectin-3 with di- and multivalent N-acetyl lactosamine increased 20 and 184-fold, respectively. The prepared glyco-QDs could be used as an efficient fluorescent probe to study carbohydrates and galectin-3 interactions. (C) 2012 Elsevier Ltd. All rights reserved.
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