2006 Fiscal Year Final Research Report Summary
Development of new technology for removing viruses from water environment
| Project/Area Number |
16360260
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Civil and environmental engineering
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| Research Institution | Tohoku University |
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Principal Investigator |
OMURA Tatsuo Tohoku University, Graduate School of Engineering, Professor, 大学院工学研究科, 教授 (30111248)
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| Co-Investigator(Kenkyū-buntansha) |
WATANABE Toru Tohoku University, Graduate School of Engineering, Research Associate, 大学院工学研究科, 助手 (10302192)
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| Project Period (FY) |
2004 – 2006
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| Keywords | Virus-Binding Proteins / Pathogenic viruses / Water environment / Immobilization / Polylysine-tag |
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| Research Abstract |
Virus-binding proteins (VBPs) are bacterial proteins to which human viruses preferentially adsorb in water environment. VBPs were discovered from a bacterial culture derived from activated sludge with affinity chromatography assay in which a viral capsid peptide was used as a ligand. The purpose of this study was to develop a novel technology using VBPs for virus removal from environmental water. Achievements described below were obtained during the 3-year study duration.
At the first year of the study duration, the scale-up of VBP production and purification was conducted in order to obtain large amount of VBP. A handmade column for VBP purification was constructed, which made it possible to obtain about 10 times larger volume of VBP than conventional procedure.
At the second year, gene of hexalysine-tagged VBP (LysTagVBP), which has 6-consecutive lysine residues in its C terminus, was fabricated with PCR, and used for production of LysTagVBP with E. coli. Then, polylysine region in LysTagVBP was coupled with the surface of glass particles using silane coupling reagent and glutaraldehyde. The creation of LysTagVBP directly linked to the effective immobilization of VBP on carrier surface.
At the third year of the study duration, the virus-removing column in which LysTagVBP was immobilized was constructed, and virus removal efficiency with the column was evaluated. As a result, about 40% of viruses were reduced during the first 1-hour operation, and 70% of viruses were removed after the 3-hour operation. The development of virus removal technology using VBPs is a totally new challenge, and the achievements with regards to the utilization of VBPs as viral adsorbent would be useful in the farther application of VBPs to virus removal from water.
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[Journal Article] Sapovirus in water, Japan.2007
Author(s)
Grant S.Hansman, Daisuke Sano, You Ueki, Takahiro Imai, Tomoichiro Oka, Kazuhiko Katayama, Naokazu Takeda, Tatsuo Omura
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Journal Title
Emerging Infectious Diseases 13(1)
Pages: 133-135
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Detection of human sapovirus in shellfish from Japan.2007
Author(s)
Grant S.Hansman, Tomoichiro Oka, Reiko Okamoto, Tomoko Nishida, Mamoru Noda, Daisuke Sano, You Ueki, Takahiro Imai, Tatsuo Omura, Osamu Nishio, Hirokazu Kimura, Naokazu Takeda
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Journal Title
Emerging Infectious Diseases (in press)
Description
「研究成果報告書概要(欧文)」より
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