RAFT-based tri-component fluorescent glycopolymers: synthesis, characterization and application in lectin-mediated bacterial binding study.
A group of fluorescent statistical glycopolymers, prepared via reversible addition-fragmentation chain-transfer (RAFT)-based polymerizations, were successfully employed in lectin-mediated bacterial binding studies. The resultant glycopolymers contained three different monomers: N-(2-hydroxyethyl) acrylamide (HEAA), N-(2-aminoethyl) methacrylamide (AEMA) and N-(2-glyconamidoethyl)-methacrylamides possessing different pendant sugars. Low dispersities (≤1.32) and predictable degrees of polymerization were observed among the products. After the polymerization, the glycopolymers were further modified by different succinimidyl ester fluorophores targeting the primary amine groups on AEMA. With their binding specificities being confirmed by testing with lectin coated agarose beads, the glycopolymers were employed in bacterial binding studies, where polymers containing α-galactose or β-galactose as the pendant sugar were specifically bound by two clinically important pathogens Pseudomonas aeruginosa and Staphylococcus aureus, respectively. This is the first report of using RAFT-based glycopolymers in bacterial binding studies, and the ready access to tri-component statistical glycopolymers also warrants further exploration of their utility in other glycobiological applications.
Department of Biochemistry, University of Missouri, Columbia, MO, 65211, USA.
Wei
W
Wang
Deborah L
DL
Chance
Valeri V
VV
Mossine
Thomas P
TP
Mawhinney
D001419:Bacteria / Q000378:metabolism*; D005456:Fluorescent Dyes / Q000737:chemistry; D006025:Glycosaminoglycans / Q000737:chemistry; D007700:Kinetics; D037102:Lectins / Q000378:metabolism*; D015394:Molecular Structure; D011108:Polymers / Q000737:chemistry / Q000378:metabolism*; D011485:Protein Binding; D013379:Substrate Specificity
D005456:Fluorescent Dyes; D006025:Glycosaminoglycans; D037102:Lectins; D011108:Polymers