Gold nanoparticle arrangement on viral particles through carbohydrate recognition: a non-cross-linking approach to optical virus detection.
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.
Niikura
Kenichi
K
Graduate School of Science and Research Institute for Electronic Science, Hokkaido University, Sapporo, Japan. kniikura@poly.es.hokudai.ac.jp
Nagakawa
Keita
K
Ohtake
Noriko
N
Suzuki
Tadaki
T
Matsuo
Yasutaka
Y
Sawa
Hirofumi
H
Ijiro
Kuniharu
K
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
D036022:Capsid Proteins; D006046:Gold; D019158:N-Acetylneuraminic Acid