title: Anionic polymer, poly(methyl vinyl ether-maleic anhydride)-coated beads-based capture of human influenza A and B virus.
abstract: An anionic magnetic beads-based method was developed for the capture of human influenza A and B viruses from nasal aspirates, allantoic fluid and culture medium. A polymer, poly(methyl vinyl ether-maleic anhydride) [poly(MVE-MA)], was used to endow magnetic beads with a negative charge and bioadhesive properties. After incubation with samples containing human influenza virus, the beads were separated from supernatants by applying a magnetic field. The adsorption [corrected] of the virus by the beads was confirmed by hemagglutinin assay, immunochromatography, Western blotting, egg infection, and cell infection. Successful capture was proved using 5 H1N1 influenza A viruses, 10 H3N2 influenza A viruses, and 6 influenza B viruses. Furthermore, the infectivity in chicken embryonated eggs and Madin-Darby canine kidney (MDCK) cells of the captured human influenza virus was similar to that of the total viral quantity of starting materials. Therefore, this method of capture using magnetic beads coated with poly(MVE-MA) can be broadly used for the recovery of infectious human influenza viruses.
authors.affiliation: Department of Virology, Center for Infectious Disease Control, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamadaoka, Suita, Osaka 565-0871, Japan. sakudo@biken.osaka-u.ac.jp
authors.forename: Akikazu
authors.initials: A
authors.lastname: Sakudo
authors.forename: Koichi
authors.initials: K
authors.lastname: Baba
authors.forename: Megumi
authors.initials: M
authors.lastname: Tsukamoto
authors.forename: Atsuko
authors.initials: A
authors.lastname: Sugimoto
authors.forename: Takashi
authors.initials: T
authors.lastname: Okada
authors.forename: Takanori
authors.initials: T
authors.lastname: Kobayashi
authors.forename: Norihito
authors.initials: N
authors.lastname: Kawashita
authors.forename: Tatsuya
authors.initials: T
authors.lastname: Takagi
authors.forename: Kazuyoshi
authors.initials: K
authors.lastname: Ikuta
mesh_terms: D000818:Animals; D001422:Bacterial Adhesion; D002642:Chick Embryo; D004285:Dogs; D006801:Humans; D007118:Immunoassay / Q000379:methods*; D053118:Influenza A Virus, H1N1 Subtype / Q000302:isolation & purification; D053122:Influenza A Virus, H3N2 Subtype / Q000302:isolation & purification; D009980:Influenza A virus / Q000302:isolation & purification*; D009981:Influenza B virus / Q000302:isolation & purification*; D007251:Influenza, Human / Q000821:virology; D008280:Magnetics; D011108:Polymers / Q000737:chemistry*; D055672:Static Electricity
chemical_list: D011108:Polymers