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Molecular expression of biologically active substances produced from newborn larvae of Trichinella

Research Project

Project/Area Number 12670229
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 寄生虫学(含医用動物学)
Research InstitutionGifu University

Principal Investigator

TAKAHASHI Yuzo  Gifu University, School of Medicine, Professor, 医学部, 教授 (80094580)

Co-Investigator(Kenkyū-buntansha) NAGANO Isao  Gifu University, School of Medicine, Associate Professor, 医学部, 助教授 (40283296)
Project Period (FY) 2000 – 2001
Project Status Completed (Fiscal Year 2001)
Budget Amount *help
¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 2001: ¥1,700,000 (Direct Cost: ¥1,700,000)
KeywordsTrichinella________ / Newborn larvae_______ / Biologically active substances / Genetic Engineering / Recombinant Protein / Proteinase / 遺伝子発現 / cDNAライブラリー / セリンプロティナーゼインヒビター / 分泌・排出蛋白
Research Abstract

Trichinella have a number of biologically active substances, some of which may be endowed with unique characteristics and possible usage for experimental and pharmaceutical purposes. We have already cloned and expressed a serine proteinase inhibitor of T. spiralis of muscle larvae. Mass production of serine proteinase inhibitor by genetic engineering may provide a new means for pharmaceutical usage and vaccine.
Newborn larvae penetrate the host tissue and migrate through the body of the host. As a result of immunoscreening of the cDNA library constructed from not only muscle larvae but also newborn larvae, we could clone a novel excretory-secretory (E-S) protein, myosin, tropomyosin and serine proteinase. The recombinant proteins were produced in an Escherichia coli expression system. The recombinant protein of serine proteinase and enolase exhibited enzymatic activity. The enzymatic activity of recombinant serine proteinase could be mainly plasmin-like proteinase activity.
We developed a detection system for myogenic regulatory factors such as MyoD and myogenin. MyoD and myogenin were expressed from the early phase of cystogenesis in Trichinella infection.
We investigated gene expression at different developmental stages of Trichinella. The analysis genes included E-S proteins and macrophage migration inhibitory factor. There were many differences in the expression level of these proteins at different developmental stages.
After this, we would like to search more useful proteins from Trichinella cDNA library, and study the function of these proteins by using the recombinant proteins expressed in insect cells.

Report

(3 results)
  • 2001 Annual Research Report   Final Research Report Summary
  • 2000 Annual Research Report
  • Research Products

    (11 results)

All Other

All Publications (11 results)

  • [Publications] Zhiliang Wu: "Expression of MyoD and myogenin in muscles of mice experimentally infected with Trichinella spiralis or Trichinella pseudospiralis"Parasite. 8. S51-S53 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Isao Nagano: "Molecular cloning and characterization of a novel protein of Trichinella pseudospiralis excretory-secretory products"Journal of Helminthology. 76(in press). (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Zhiliang Wu: "Expression of excretory and secretory protein genes of Trichinella at muscle stage differs before and after cyst formation"Parasitology International. (in press). (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Takumi Nakada: "Antigenic peptide of myosin heavy chain-like protein from Trichinella spiralis"Japanese Journal of Tropical Medicine and Hygiene. (in press). (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Zhiliang Wu: "Expression of MyoD and myogenin in muscles of mice experimentally infected with Trichinella spiralis or Trichinella pseudospiralis"Parasite. 8. S51-53 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Isao Nagano: "Molecular cloning and characterization of a novel protein of Trichinella pseudospiralis excretory-secretory products"Journal of Helminthology. (in press.). (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Zhiliang Wu: "Expression of excretory and secretory protein genes of Trichinella at muscle stage differs before and after cyst formation"Parasitology International. (in press.). (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Takumi Nakada: "Antigenic peptide of myosin heavy chain-like protein from Trichinella spiralis"Japanese Journal of Tropical Medicine and Hygiene. (in press.). (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Isao Nagano: "Molecular cloning and characterization of a novel protein of Triohinella psevdospirazis excretory-secretory products"Journal of Helmintholosy. 76(in press). (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] Isao Nagano: "Molecular cloning and characterization of a serine proteinase inhibitor from Trichinella spiralis"Parasitology. (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] Isao Nagano: "Molecular cloning and characterization of a 21kDa protein secreted from Trichinella pseudospiralis"Journal of Helminthology. (2001)

    • Related Report
      2000 Annual Research Report

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Published: 2001-04-01   Modified: 2016-04-21  

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