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Seroepidemiology of the molecules expressed on the Plasmodium vivax-infected erythrocyte surface

Research Project

Project/Area Number 24406012
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypePartial Multi-year Fund
Section海外学術
Research Field Parasitology (including Sanitary zoology)
Research InstitutionNagasaki University

Principal Investigator

KANEKO Osamu  長崎大学, 熱帯医学研究所, 教授 (50325370)

Co-Investigator(Renkei-kenkyūsha) YAHATA Kazuhide  長崎大学, 熱帯医学研究所, 助教 (40467965)
TSUBOI Takafumi  愛媛大学, プロテオサイエンスセンター, 教授 (00188616)
Research Collaborator ASADA Masahito  長崎大学, 熱帯医学研究所, 助教
SUNGKAPONG Tippawan  タイ王国・ナレスワン大学, 健康科学部, 助手
HAN Eun-Taek  大韓民国・江原大学, 医学部, 教授
Project Period (FY) 2012-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥17,680,000 (Direct Cost: ¥13,600,000、Indirect Cost: ¥4,080,000)
Fiscal Year 2014: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2013: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2012: ¥7,540,000 (Direct Cost: ¥5,800,000、Indirect Cost: ¥1,740,000)
Keywords感染症 / マラリア / 血清疫学 / 原虫 / 抗原 / 寄生虫 / 多型
Outline of Final Research Achievements

Plasmodium vivax expresses several hundreds of proteins on the infected erythrocyte surface, such as VIR protein family, which is proposed to be responsible for the disease severity. However, humoral immunity against these antigens were not understood well. In this study, we examined antibody responses against a panel of VIR. Recombinant proteins were produced for 4 types of VIR (VirA, VirC, VirF, and Vir18) as well as the extracellular cysteine-rich domain of PvSTP2 (PvSTP2-CRD) and 19-kD region of merozoite surface protein 1 (PvMSP1-19kD). Plasma collected from Vivax patients in Southeast Asia were analyzed. The reactivity against all recombinant VIR was much lower than the PvMSP1-19kD. The reactivity pattern is similar between VirC and VirF, and between PvSTP2 and VirA, suggesting that they induce host response independently as groups. No correlation between antibody titre/reactivity against VIR and fever/parasitemia was observed.

Report

(5 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Annual Research Report
  • 2013 Annual Research Report
  • 2012 Annual Research Report
  • Research Products

    (4 results)

All 2015 Other

All Int'l Joint Research (2 results) Presentation (2 results)

  • [Int'l Joint Research] Naresuan University/Mahidol University/Chulalongkorn University(タイ)

    • Related Report
      2015 Annual Research Report
  • [Int'l Joint Research] Kangwon National University(韓国)

    • Related Report
      2015 Annual Research Report
  • [Presentation] Antigenicity of the P. vivax-encoded proteins expressed on the parasite-infected red blood cell.2015

    • Author(s)
      Kaneko O, Fauzi M, Han JH, Sungkapong T, Gitaka JN, Takashima E, Tsuboi T, Yahata K, Ha KS, Han ET
    • Organizer
      56回日本熱帯医学会大会
    • Place of Presentation
      大阪大学コンベンションセンター(大阪府吹田市)
    • Year and Date
      2015-12-04
    • Related Report
      2015 Annual Research Report
  • [Presentation] Characterization of Plasmodium vivax subtelomeric transmembrane protein2015

    • Author(s)
      Sungkapong T, Kaewthamasorn, Yahata K, Chotivanich K, Kaneko O
    • Organizer
      第4回感染症若手フォーラム
    • Place of Presentation
      アテーナ海月(兵庫県淡路市)
    • Year and Date
      2015-09-06
    • Related Report
      2015 Annual Research Report

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Published: 2012-04-24   Modified: 2022-02-01  

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