Kitano H, Gemmei-Ide M, Anraku Y, Saruwatari Y. Resistance of surface-confined telomers with pendent glucosylurea groups against non-specific adsorption of proteins.
Colloids Surf B Biointerfaces 2007;
56:188-96. [PMID:
16962744 DOI:
10.1016/j.colsurfb.2006.07.020]
[Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2006] [Accepted: 07/25/2006] [Indexed: 11/15/2022]
Abstract
A disulfide-carrying random telomer with pendent D-glucosylurea groups (Cys-poly(glucosylureaethyl methacrylate-r-ureaethyl methacrylate), Cys-Poly(GUMA-r-UMA)) was obtained by UV-irradiation of GUMA and UMA in the presence of benzyl N,N-diethyldithiocarbamoyl (BDC) derivative which shows the abilities of initiation, transfer, and termination (iniferter). The disulfide-carrying telomer was accumulated on a gold electrode and colloidal gold-immobilized glass substrate, and the binding of various proteins to the surface of the polymer brush was examined by both cyclic voltammetry (CV) with hydroquinone as a probe, and localized surface plasmon resonance (LSPR) absorption method. The Cys-Poly(GUMA-r-UMA) brush did not show a significant non-specific adsorption of proteins such as bovine serum albumin and egg white lysozyme. Furthermore, sugar binding proteins, concanavalin A (with an affinity for mannose and glucose) and wheat germ agglutinin (with an affinity for N-acetylglucosamine), were only slightly adsorbed to the GUMA-carrying brush, which is in contrast with the prompt and distinct binding of these proteins to the brushes composed of 2-methacryloyloxyethyl D-glucopyranoside and 1-(6'-methacrylamido)hexyl-2-N-acetoamido-2-deoxy-D-glucopyranoside, respectively. The glucosylurea group-carrying telomer brush prepared here might be useful to provide a "bio-inert" surface in bio-medical fields.
Collapse