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Development of the second generation Japanese encephalitis vaccine by recombinant DNA technology

Research Project

Project/Area Number 61870025
Research Category

Grant-in-Aid for Developmental Scientific Research

Allocation TypeSingle-year Grants
Research Field Virology
Research InstitutionNagasaki University

Principal Investigator

IGARASHI Akira  Nagasaki University, Institute of Tropical Medicine, 熱帯医学研究所, 教授 (40029773)

Co-Investigator(Kenkyū-buntansha) FUJITA Hiroyuki  Research Foundation for Microbial Diseases of Osaka University, Kanonji Institut, 観音寺研究所, 生物工学センター主任 (30156880)
TAKAGI Mitsuo  Research Foundation for Microbial Diseases of Osaka University, Kanonji Institut, 観音寺研究所, 技術部次長 (60113453)
YOSHIDA Iwao  Research Foundation for Microbial Diseases of Osaka University, Kanonji Institut, 観音寺研究所, 品質管理部長 (60072782)
MORITA Kouichi  Nagasaki University, Institute of Tropical Medicine, 熱帯医学研究所, 講師 (40182240)
SAKAKI Yoshiyuki  Kyushu University, Institute of Genetic Information, 遺伝情報実験施設, 教授 (10112327)
住吉 日出夫  長崎大学, 熱帯医学研究所, 助手 (80179308)
Project Period (FY) 1986 – 1988
Project Status Completed (Fiscal Year 1988)
Budget Amount *help
¥10,000,000 (Direct Cost: ¥10,000,000)
Fiscal Year 1988: ¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 1987: ¥2,500,000 (Direct Cost: ¥2,500,000)
Fiscal Year 1986: ¥6,000,000 (Direct Cost: ¥6,000,000)
KeywordsJapanese encephalitis virus / recombinant DNA / 第二世代ワクチン / Eタンパク / 組換DNA / ワクチン / 遺伝子RNA / 塩基配列解析
Research Abstract

Studies were made to develop the second generation Japanese encephalitis (JE) vaccine by recombinant DNA technology. In order to obtain basic information for this objective, complete nucleotide sequence of JE virus was analyzed. The virus genome consisted of 10,976 nucleotides, of which 95 bases existed in 5' noncoding region, 585 bases at 3' noncoding region, and 10,296 bases formed a long open reading frame (ORT) between both noncoding region. The N-terminal amino acid sequences of the structural proteins of JE virus showed that the structural protein gene existed in the 5' 1/4 of the ORF in the order of C, PreM (precursor of M), and E. Sicne E protein is known to produce neutralizing antibodies which play most important roles in the protection of je, e protein gene was inserted into various recombinant plasmids or viruses in order to express the E protein in the cells transformed or infected with these plasmids or viruses. The expression of E protein was detected in recombinant yeast, mammalian cells, vaccinia virus and bombix mori nuclear polyhedrosis virus, respectively, however, the immunogenicity of these expressed.E protein was much lower than that of the current vaccine in terms of eliciting neutralizing antibodies. The reason of the low immunogenicity could be (1) amount of the expressed E protein, (2) stability of the E protein in the expressed cells, (3) dependence of immunogenicity on the highly conformational structure of the E protein, (4) purity of the e protein in the expressed cells used for immunization. These problems should be overcome by further studies to improve the levels of expression, purification of the expressed E protein, and trying to express the neutralizing epitope which is resistant to protein denaturation and exists near C-terminal of the E protein.

Report

(3 results)
  • 1988 Annual Research Report   Final Research Report Summary
  • 1986 Annual Research Report
  • Research Products

    (21 results)

All Other

All Publications (21 results)

  • [Publications] Sumiyoshi,H.;Morita,K.;Mori,C.;Fuke,I.;Shiba,T.;Sakaki,Y.;Igrarashi,A.: Gene. 48. 195-201 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Sumiyoshi,H.;Mori,C.Kuhara,S.;Kondou.J.;Kikuchi,Y.;Nagamatsu,M.;Igarashi,A.: Virology. 161. 497-510 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Fujita,H.;Sumiyoshi,H.;Mori,C.;Manabe,S.;Takagi,M.;Yoshida,I.;Morita,K.;Fuke,I.;Fukai K.;Igarashi A.: Bulletin of the World Health Organization. 65. 303-308 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Srivastava,A.K.;Aira,Y.;Mori,C.;Kobayashi,Y.;Igarashi,A.: Archives of Virology. 96. 97-107 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Nagamatsu,M.;Kikuchi,Y.;Igarashi,A.: Acta Virologica. 22. 75-78 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Igarashi,A.: Southeast Asian Journal of Tropical Medicine and Public Health. 19. 493-499 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Sumiyoshi, H.,;Morita, K.,;Mori, C.,;Fuke, I.,;Shiba, T.,;Sakaki, Y.,;Igarashi, A.: "Sequence of 3000 nucleotides at the 5' end of Japanese encephalitis virus RNA." Gene. 48. 195-201 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Sumiyoshi, H.,;Mori, C.,;Fuke, I.,;Morita, K.,;Kuhara, S.,;Kondou, J.,;Kikuchi, Y.,;Nagamatsu, M.,;Igarashi, A.: "Complete nucleotide sequence of the Japanese encephalitis virus genome RNA." Virology. 161. 497-510 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Fujita, H.,;Sumiyoshi, H.,;Mori, C.,;Manabe, S.,;Takagi, M.,;Yoshida, I.,;Morita, K.,;Fuke, I.,;Fukai, K.,;Igarashi. A.: "Studies in the development of Japanese encephalitis vaccine: expression of virus envelope glycoprotein V3(E) gene in yeast." Bulletin of the World Health Organization. 65. 303-308 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Srivastava, A. K.,;Aira, Y.,;Mori, C.,;Kobayashi, Y.,;Igarashi, A.: "Antigenicity of Japanese encephalitis virus envelope glycoprotein V3(E) and its cyanogen bromide cleaved fragments examined by monoclonal antibodies and Western blotting." Archives of Virology. 96. 97-107 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Nagamatsu, M.,;Kikuchi, Y.,;Igarashi, A.: "Terminal sequences of the replicative form of RNA of the Japanese encephalitis virus." Acta Virologica. 22. 75-78 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Sumiyoshi,H.;Morita,K.;Mori,C.;Fuke,I.;Shiba,T.;Sakaki,Y.;Igarashi,A.: Gene. 48. 195-201 (1986)

    • Related Report
      1988 Annual Research Report
  • [Publications] Sumiyoshi,H.;Mori,C.;Kuhara,S.;Kondou,J.;Kikuchi.Y.;Nagamatsu,M.;Igarashi,A.: Virology. 161. 497-510 (1987)

    • Related Report
      1988 Annual Research Report
  • [Publications] Fujita,H.;Sumiyoshi,H.;Mori,C.;Manabe,S.;Takagi,M.;Yoshida,I.;Morita,K.;Fuke,I.;Fukai,K.;Igarashi,A.: Bulletin of the World Health Organization. 65. 303-308 (1987)

    • Related Report
      1988 Annual Research Report
  • [Publications] Srivastava,A.K.;Aira,Y.;Mori,C.;Kobayashi,Y.;Igarash,A.: Archives of Virology. 96. 97-107 (1987)

    • Related Report
      1988 Annual Research Report
  • [Publications] Nagamatsu;M.;Kikuchi;Y.;Igarashi,A.: Acta Virologica. 22. 75-78 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] Igarashi,A.: Southeast Asian Journal of Tropical Medicine and Public Health. 19. 493-499 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] Sumiyoshi,H.;Morita,K.;Mori,C.;Fuke,I.;Shiba,T.;Sakaki,Y.;Igarashi,A.: Gene. 48. 195-201 (1986)

    • Related Report
      1986 Annual Research Report
  • [Publications] rashi,A.Fujita,H.;Sumiyoshi,H.;Mori,C.;Manabe,S.;Takagi,M.;Yoshida,I.;Morita,K.;Fuke,I.;Fukai,K.;Igar: Bulletin of the World Health Organization. (1986)

    • Related Report
      1986 Annual Research Report
  • [Publications] Sumiyoshi,H.;Mori,C.;Fuke,I.;Morita,K.;Kondou,J.;Kikuchi,Y.;Nagamatsu,H.;Igarashi,A.: Virology. (1986)

    • Related Report
      1986 Annual Research Report
  • [Publications] 五十嵐章,住吉日出夫: 実験医学. (1986)

    • Related Report
      1986 Annual Research Report

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Published: 1987-03-31   Modified: 2016-04-21  

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