Preparation of biotinylated glyconanoparticles via a photochemical process and study of their bioconjugation to streptavidin.
We report here the preparation of novel biotinylated glyconanoparticles from well-defined biotinylated glycopolymers and poly(N-isopropylacrylamide) (PNIPAAm) synthesized via the reversible addition fragmentation chain transfer (RAFT) polymerization process. The in situ reduction of the biotinylated glycopolymers, PNIPAAm, poly(ethylene glycol), and HAuCl4 via a photochemical process resulted in the formation of biotinylated gold nanoparticles. The multifunctional biotinylated glyconanoparticles were then evaluated for their bioconjugation toward streptavidin using UV-vis spectroscopy and surface plasmon resonance (SPR). The biotinylated nanoparticles underwent aggregation in the presence of streptavidin as revealed by spectrophotometry, which indicates the accessibility of the biotin for conjugation. These results were further confirmed by surface plasmon resonance even in the case of surface-immobilized streptavidin.
Narain
Ravin
R
Department of Chemistry and Biochemistry and Biomolecular Sciences Program, Laurentian University, 935, Ramsey Lake Rd, Sudbury, Ontario, Canada. rnarain@laurentian.ca
Housni
Abdelghani
A
Gody
Guillaume
G
Boullanger
Paul
P
Charreyre
Marie-Thérèse
MT
Delair
Thierry
T
D001710:Biotin / Q000737:chemistry*; D005947:Glucose / Q000737:chemistry*; D053758:Nanoparticles; D010777:Photochemistry; D013056:Spectrophotometry, Ultraviolet; D019809:Streptavidin / Q000737:chemistry*; D020349:Surface Plasmon Resonance
D001710:Biotin; D019809:Streptavidin; D005947:Glucose