title: Gold nanoparticle arrangement on viral particles through carbohydrate recognition: a non-cross-linking approach to optical virus detection.
abstract: We propose a new approach to optical virus detection based on the spatial assembly of gold nanoparticles on the surface of viruses. Since JC virus-like particles (VLPs) comprise a repeating viral capsid protein that binds to sialic acid, the conjugation of sialic acid-linked Au particles with VLPs enables the spatial arrangement of Au particles on the VLP surface. This structure produced a red shift in the absorption spectrum due to plasmon coupling between adjacent Au particles, leading to the construction of an optical virus detection system. Our system depends not on the simple cross-linking of VLPs and Au particles, but on an ordered Au structure covering the entire surface of the VLPs and can be applied to various virus detection systems using the inherent ligand recognition of animal viruses.
authors.affiliation: Graduate School of Science and Research Institute for Electronic Science, Hokkaido University, Sapporo, Japan. kniikura@poly.es.hokudai.ac.jp
authors.forename: Kenichi
authors.initials: K
authors.lastname: Niikura
authors.forename: Keita
authors.initials: K
authors.lastname: Nagakawa
authors.forename: Noriko
authors.initials: N
authors.lastname: Ohtake
authors.forename: Tadaki
authors.initials: T
authors.lastname: Suzuki
authors.forename: Yasutaka
authors.initials: Y
authors.lastname: Matsuo
authors.forename: Hirofumi
authors.initials: H
authors.lastname: Sawa
authors.forename: Kuniharu
authors.initials: K
authors.lastname: Ijiro
mesh_terms: D002213:Capsid / Q000737:chemistry* / Q000648:ultrastructure*; D036022:Capsid Proteins / Q000737:chemistry*; D006046:Gold / Q000737:chemistry; D007577:JC Virus / Q000737:chemistry* / Q000302:isolation & purification / Q000648:ultrastructure*; D019158:N-Acetylneuraminic Acid / Q000737:chemistry*; D053758:Nanoparticles / Q000737:chemistry; D055620:Optical Phenomena; D011485:Protein Binding; D020349:Surface Plasmon Resonance; D014771:Virion / Q000737:chemistry / Q000648:ultrastructure
chemical_list: D036022:Capsid Proteins; D006046:Gold; D019158:N-Acetylneuraminic Acid