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天然生薬資源からの新規抗マラリア薬候補の探索及びその作用機序の解析研究

Research Project

Project/Area Number 16017266
Research Category

Grant-in-Aid for Scientific Research on Priority Areas

Allocation TypeSingle-year Grants
Review Section Biological Sciences
Research InstitutionOkayama University

Principal Investigator

金 惠淑  岡山大学, 大学院医歯薬学総合研究科, 助教授 (70314664)

Project Period (FY) 2004 – 2005
Project Status Completed (Fiscal Year 2005)
Budget Amount *help
¥7,600,000 (Direct Cost: ¥7,600,000)
Fiscal Year 2005: ¥3,800,000 (Direct Cost: ¥3,800,000)
Fiscal Year 2004: ¥3,800,000 (Direct Cost: ¥3,800,000)
Keywordsマラリア / 新規抗マラリア薬 / 天然薬用資源 / 薬剤耐性 / アルテミシニン / 天然薬用マラリア資源 / 常山誘導体
Research Abstract

クロロキンをはじめとする既存抗マラリア薬に対する耐性熱帯熱マラリア原虫が出現し、既存の抗マラリア薬では治療できない状況になりつつある。そのために新しい抗マラリア薬の開発研究はマラリアに関する最優先研究事項である。私は、薬用天然資源の中から薬剤耐性マラリアを克服できる新規マラリア治療薬を開発し、マラリア制圧に寄与することを研究目的として本研究を進める。本研究では今までの研究で得られた新規構造を有する天然生薬成分、及び天然薬用資源中の薬効成分をリード化合物とし、熱帯熱マラリア原虫における抗マラリア薬候補の最適化、薬効を示す分子標的の同定、及び、その遺伝子機能を解析する。また、アフィニティ法とプロテオミクスを用い、高い確率で抗マラリア薬のターゲットになりうる分子標的を選抜する。さらに、薬剤耐性のメカニズム解析を行い、薬剤耐性を克服するための基盤研究を行う。
平成17年度の研究成果を下記に示す。
1.メフロキン高度耐性熱帯熱原虫(R/24株)を用い、pfmdr-1遺伝子の変異ヵ所が実際のマラリア流行地の患者でも見られるかどうか、マラリア流行地の血液サンプルを用いて解析した。タイのマラリア患者、及びタンザニアの患者由来のサンプルを用いてR/24株で見られる変異ヵ所を調べた結果、変異ヵ所は見られなかった。今後、メフロキン耐性が流行する地域の患者サンプルを増やして検討する。また、プロテオミックスとトランスクリプトームを駆使してメフロキン耐性メカニズムの解析を開始した。
2.生薬天然資源由来の租抽出分画由来のサンプルを用いて校マラリア活性を検討した結果、6種類の天然資源由来より強い抗マラリア活性が見られた(EC_<50>=<1μg/ml)。現在これらサンプルを更に分画して活性化合物を見出す研究を進めている。
3.生薬アルテミシニン誘導体の研究を行い、10^<-8>M程度で強い抗マラリア活性を示す種々の抗マラリア活性を示す誘導体を得たので、構造-活性の関連性を検討している。

Report

(2 results)
  • 2005 Annual Research Report
  • 2004 Annual Research Report
  • Research Products

    (19 results)

All 2006 2005 2004 Other

All Journal Article (17 results) Book (1 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Antimalarial Effect of Bis-pyridinium Salts, N, N'-Hexamethylenebis (4-carbamoyl-1-alkylpyridinium bromide).2006

    • Author(s)
      Fujimoto, K., Morisaki, D., Yoshida, M., Namba, T., Kim, H.-S., Wataya, Y., Kourai, H., Kakuta, H., Sasaki, K.
    • Journal Title

      Bioorg.Med.Chem.Lett., (In press)

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Co-catalyzed autoxidation of alkene in the presence of silane. The effect of the structure of silanes on the efficiency of the reaction and on the product distribution.2005

    • Author(s)
      Wu, J.-M., Kunikawa, S., Tokuyasu, T., Masuyama, A., Nojima, M., Kim H.-S., Wataya, Y.
    • Journal Title

      Tetrahedron, 61

      Pages: 9961-9968

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Synthesis and biological activity of fatty acid conjugate of quinine.2005

    • Author(s)
      Kumura, N., Izumi, M., Nakajima, S., Shimizu, S., Kim, H.-S., Wataya, Y., Baba, N.
    • Journal Title

      Biosci.Biotech.Biochem., 69(11)

      Pages: 2250-2253

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Synthesis and evaluation of b-carbolinium cations as new antimalarial agents based on pi-delocalized lipophilic cation (DLC) hypothesis.2005

    • Author(s)
      Takasu, K, Shimogama, T, Saiin, C, Kim H.-S, Wataya, Y, Brun, R, Ihara, M.
    • Journal Title

      Chem.Pharm.Bull., 53(6)

      Pages: 653-661

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Synthesis of novel siRNAs having thymidine dimers consisting of a carbamate or an urea linkage at their 3' overhang regions and their ability to suppress human RNase L protein expression.2005

    • Author(s)
      Ueno, Y., Naito, T., Kawada, K., Shibata, A., Kim, H.-S., Wataya, Y., Kitade, Y.
    • Journal Title

      Biol.Biophy.Res.Comm., 20,330(4)

      Pages: 1168-1175

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Synthesis of 5'-methylenearisteromycin and its 2-fluoro congener with potent antimalarial activity due to the parasite S-adenosyl homocysteine hydrolase Inhibition.2005

    • Author(s)
      Takagi, T., Sukeda, M., Kim, H.-S., Wataya, Y., Kitade, Y., Matsuda, A., Shuto, S.
    • Journal Title

      Org.Biomol.Chem., 3

      Pages: 1245-1251

    • Related Report
      2005 Annual Research Report
  • [Journal Article] 1,2,4,5-Tetraoxan cycloalkanes : Synthesis and Antimalarial Activity.2005

    • Author(s)
      Masuyama, A., Wu, J-M., Nojima, M., Kim, H.-S., Wataya, Y.
    • Journal Title

      Mini-Reviews Med.chem. 5

      Pages: 1035-1043

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Sequence analysis of the 5'-flanking regions of human dihydropyrimidine dehydrogenase gene : Identification of a new polymorphism related with effects of 5-fluorouracil.2005

    • Author(s)
      Hasegawa, T., Kim, H.-S., Fukushima, M., Wataya, Y.
    • Journal Title

      Nucleosides Nucleotides Nucleic Acids, 24(4)

      Pages: 233-242

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Inhibitory Mechanisms of 1-(3-C-ethynyl-b- D-ribo-pentofuranosyl)uracil (EUrd) on RNA Synthesis..2005

    • Author(s)
      Yokogawa, T., Kanda, H., Takatori, S., Takenaka, K., Naito, T., Sasaki, T., Matsuda, A., Fukushima, M., Kim, H.-S., Wataya, Y.I
    • Journal Title

      Nucleosides Nucleotides Nucleic Acids, 24(3)

      Pages: 227-232

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Gastrodia elata Blume and an active component, p-hydroxybenzyl alcohol reduce focal ischemic brain injury through antioxidant related gene expressions2005

    • Author(s)
      Yu, Kim, Lee, Han, Lee, Kim, H.-S., Hong, J., Kang, S.
    • Journal Title

      Biol.Pharm.Bull., 28(6)

      Pages: 1016-1020

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Duffy antigen is important for lethality of the lethal strain P.yoelii 17XL2004

    • Author(s)
      Akimitsu, N., Kim, H.-S., Ono, K., Wataya, Y., Torii, M., Sekimizu, K.
    • Journal Title

      Parasitolgy Res. 93

      Pages: 499-530

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Antimalarial Activity of Lavandulyl Flavanones Isolated from the Roots of Sophora flavescens.2004

    • Author(s)
      Kim, Y.-C., Kim, H.-S., Wataya, Y., Sohn, D.-H., Kang, T.-H., Kim, M.-S., Kim, Y.-M., Lee, K.-M., Chang, J.-D., Park, H.
    • Journal Title

      Biol.Pharm.Bull. 25

      Pages: 748-750

    • Related Report
      2004 Annual Research Report
  • [Journal Article] 抗原虫薬2004

    • Author(s)
      金 惠淑, 綿矢 有佑, 木村幹男, 益山新樹, 野島正朋
    • Journal Title

      臨床と微生物

      Pages: 5-5

    • NAID

      10015599985

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Synthesis of 5'-methylenearisteromycin and its 2-fluoro congener with potent antimalarial activity due to the parasite S-adenosyl homocysteine hydrolase Inhibition.

    • Author(s)
      Takagi, T., Sukeda, M., Kim, H.-S., Wataya, Y., Kitade, Y., Matsuda, A., Shuto, S.
    • Journal Title

      SBO (In press)

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Sequence analysis of the 5'-flanking regions of human dihydropyrimidine dehydrogenase gene : Identification of a new polymorphism related with effects of 5-fluorouracil.

    • Author(s)
      Hasegawa, T., Kim, H.-S., Fukushima, M., Wataya, Y.
    • Journal Title

      Nucleosides Nucleotides Nucleic Acids (In press)

    • Related Report
      2004 Annual Research Report
  • [Journal Article] astrodia elata Blume and an active component, p-hydroxybenzyl alcohol reduce focal ischemic brain injury through antioxidant related gene expressions

    • Author(s)
      Yu, S., Kim, J., Lee, C., Han, J., Lee, J., Kim, H.-S., Hong, J., Kang, S.
    • Journal Title

      Biol.Pharm.Bull. (In press)

    • Related Report
      2004 Annual Research Report
  • [Journal Article] 1,2,4,5-Tetraoxan cycloalkanes : Synthesis and Antimalarial Activity.

    • Author(s)
      Masuyama, A., Wu, J-M., Nojima, M., Kim, H.-S., Wataya, Y.
    • Journal Title

      MRMC (In press)

    • Related Report
      2004 Annual Research Report
  • [Book] 実験医学 5.抗マラリア薬の開発:過去-現在-未来2005

    • Author(s)
      綿矢 有佑, 金 惠淑
    • Total Pages
      5
    • Related Report
      2005 Annual Research Report
  • [Patent(Industrial Property Rights)] ヘムへの配位能を有する抗マラリ2006

    • Inventor(s)
      樋口 恒彦, 大宮 弘久, 梅澤 直樹, 金 惠淑, 綿矢 有佑
    • Industrial Property Rights Holder
      樋口 恒彦
    • Industrial Property Number
      2006-049678
    • Filing Date
      2006-02-28
    • Related Report
      2005 Annual Research Report

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Published: 2004-04-01   Modified: 2018-03-28  

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