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BASIC RESEARCH AIMING CONSTRUCTION OF ON-LINE MONITORING SYSTEM FOR MAMMALIAN CELL CULTURE SYSTEM

Research Project

Project/Area Number 06453105
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 生物・生体工学
Research InstitutionUNIVERSITY OF TOKYO

Principal Investigator

NAGAMUNE Teruyuki  UNIVERSITY OF TOKYO,DEPARTMENT OF CHEMISTRY AND BIOTECHNOLOGY,PROFESSOR, 大学院・工学系研究科, 教授 (20124373)

Co-Investigator(Kenkyū-buntansha) 寺田 聡  東京大学, 大学院工学系研究科, 特別研究員(DCI)
Project Period (FY) 1994 – 1996
Project Status Completed (Fiscal Year 1996)
Budget Amount *help
¥7,400,000 (Direct Cost: ¥7,400,000)
Fiscal Year 1996: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1995: ¥2,400,000 (Direct Cost: ¥2,400,000)
Fiscal Year 1994: ¥4,300,000 (Direct Cost: ¥4,300,000)
KeywordsMAMMALIAN CELL CULTURE / ON-LINE MONITORING / FT-IR / CONCENTRATION USING REVERSE OSMOSIS MEMBRANE / ELISA / CHIMERIC PROTEIN / 抗原抗体反応
Research Abstract

In order to control mammalian cell culture process optimally it is important to monitor the concentrations of substrates, metabolites and products such as glucose, glutamine, lactate, ammonia, antibody and cytokine. The aim of this study is to develop an on-line monitoring method for mammalian cell culture process using FT-IR spectrometer as a detector.
Since the concentrations of substances such as glucose, glutamine and lactate in culture broth are relatively low for detection by FT-IR spectrometer, we tried to concentrate culture broth by using reverse osmosis membrane. It was possible to concentrate glutamine or glucose solution up to about fifty times higher concentration than initial concentration by use of membrane made of poly-amide/poly-vinyl-alcohol at operating pressure of 2MPa. However reverse osmosis membrane method is not suitable for increasing lactate concentration because of low rejection factor of lactate.
The concentration of antibody or cytokine is also extremely low, … More less than several ten mg per litter and culture broth contains several gper litter of serum albumin, it is necessary to detect produced protein selectively and sensitively. Here we employed Enzyme-Linked-Immuno-Sorbent-Assay (ELISA) method and investigated the optimal combination of enzyme and substrate for ELISA method detected by FT-IR spectrometer. It was shown thatt the ELISA method using alkaline-phosphatase and phenol phosphate as enzyme and substrate, respectively, and detecting the formation of phenol is most suitable for FT-IR measurement in its sensitivity.
For conventional ELISA,the secondary antibody labeled with enzyme by chemical conjugation method has been used. Since chemical conjugation reaction is not site specific reaction, it is difficult to control the conjugation reaction site and the number of enzyme molecules conjugated with antibody. Consequently, standard curve between the concentration of target protein and enzymatic activity changes depending on the lot of enzyme-labeled secondary antibodies. To overcome this problem.we have designed and constructed a bacterial expression vector, which allows to produce a fusion protein of single-chain variable region of antibody and alkaline-phosphatase in Escherichia coli. This chimeric protein retained almost the same enzymatic activity and antigen binding affinity of parent enzyme and antibody. Novel ELISA system for detecting antigen with a single epitope was also developed based on interchain interaction of separated VH and VL chains from single antibody variable region and was named "Open Sandwich ELISA". Less

Report

(4 results)
  • 1996 Annual Research Report   Final Research Report Summary
  • 1995 Annual Research Report
  • 1994 Annual Research Report
  • Research Products

    (9 results)

All Other

All Publications (9 results)

  • [Publications] 上田宏: "抗体の分子内相互作用を利用した新しい免疫測定法" ケミカル・エンジニアリング. 41・11. 42-46 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] H.Ueda: "Open sandwich ELISA-a novel immunoassay based on the interchain interaction of an antibody variable region" Nature Biotechnology. 14・12. 1714-1718 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] C.Suzuki: "Construction of antibody variable domain fusion Proteins and their application to open sandwhich ELISA" 化学工学シンポジウムシリーズ. 57. 66-70 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] C.Suzuki: "Construction and characterization of anti-hapten scFv-alkaline phosphatase chimeric protein" Journal of Biochemistry. (in press). (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] H.UEDA et al.: "A NOVEL IMMUNOASSAY BASED INTER-MOLECULAR INTERACTION OF ANTIBODY" KEMIKARUENJINIARINGU. 41-11. 42-46 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] H.UEDA et al.: "OPEN SANDWICH ELISA-A NOVEL IMMUNOASSAY BASED ON THE INTERCHAIN INTER-ACTION OF AN ANTIBODY VARIABLE REGION" NATURE BIOTECHNOLOGY. 14-12. 1714-1718 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] C.SUZUKI et al.: "CONSTRUCTION OF ANTIBODY VARIABLE DOMAIN FUSION PROTEINS AND THEIR APPLICATION TO OPEN SANDWICH ELISA" CHEMICAL ENGINEERING SYMPOSIUM SERIES. 57. 66-70 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] C.SUZUKI et al.: "CONSTRUCTION AND CHARACTERIZATION OF ANTI-HAPTEN scFv-ALKALINE PHOSPHATASE CHIMERIC PROTEIN" JOURNAL OF BIOCHEMISTRY. (IN PRESS).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Chikako Suzuki: "Constrction of Antibody variable Domain Fusion Proteins and their Applications to Open Sandwich ELISA" 化学工学シンポジウムシリーズ57 Horizon of Biochemical Enginnering. 66-70 (1997)

    • Related Report
      1996 Annual Research Report

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Published: 1994-04-01   Modified: 2016-04-21  

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