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ヒ素によるアポトーシス誘導におけるDNaseIおよびIIの関与・役割の解明

Research Project

Project/Area Number 17790407
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Legal medicine
Research InstitutionShimane University

Principal Investigator

藤原 純子  島根大学, 医学部, 助手 (20346381)

Project Period (FY) 2005 – 2006
Project Status Completed (Fiscal Year 2006)
Budget Amount *help
¥2,300,000 (Direct Cost: ¥2,300,000)
Fiscal Year 2006: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 2005: ¥1,300,000 (Direct Cost: ¥1,300,000)
KeywordsDNase I / ヒ素 / アポトーシス / 活性 / 誘導 / Hep3B / 断片化 / アクチン / 糖鎖 / 精製 / 生化学的性状
Research Abstract

高濃度のヒ素を含む飲料水による慢性中毒がアジアを中心とする国々で問題となっている。無機ヒ素の発癌作用が肺、皮膚などで報告されている。その一方で低濃度のヒ素は白血病細胞、神経芽細胞、大腸癌細胞においてアポトーシスを誘導することが知られ、副作用の少ない抗癌剤として注目を集めている。DNA断片化に関与するDeoxyribonuclease I(DNase I)が、ヒ素によるアポトーシス誘導に果たす役割は不明である。そこで本研究では、ヒ素のアポトーシス誘導過程でDNA断片化にどのような機構・機序でDNase Iが関与しているのかを分子レベルおよび細胞レベルで解明することを目的とした。
最終年度にあたり、DNase Iをstableに発現する接着細胞系のHep3Bを用い、ヒ素化合物(亜ヒ酸・ヒ酸、モノメチルアルソン酸、ジメチルアルシン酸)によるアポトーシス誘導を行った。その結果、アポトーシスは亜ヒ酸>ヒ酸>モノメチルアルソン酸>ジメチルアルシン酸の順番で強く誘導されることがTUNEL assayにより明らかになった。またアポトーシス誘導により、DNase I活性はコントロール群と比較して有意差はみられなかった。さらに、ヒ素化合物がDNase Iの生化学的性状に及ぼす影響を調べた。その結果、DNase I活性はモノメチルアルソン酸によってのみ、活性が阻害されることが明らかになった。今後、浮遊細胞系のHL-60を用いたヒ素化合物によるアポトーシスの誘導を行いDNase I活性の変動について検討を行い、モノメチルアルソン酸がDNase Iの生化学的性状に及ぼす影響を調べる予定である。

Report

(2 results)
  • 2006 Annual Research Report
  • 2005 Annual Research Report
  • Research Products

    (23 results)

All 2007 2006 2005

All Journal Article (23 results)

  • [Journal Article] Variation of interleukin 8-251 A>T polymorphism in worldwide populations and intra-ethnic differences in Japanese populations.2007

    • Author(s)
      Fujihara J et al.
    • Journal Title

      Clinica Chimica Acta 377・1-2

      Pages: 79-82

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Specific determination of linear alkylbenzenesulfonates (LAS) in commercial detergents and whole blood by high performance liquid chromatography with solid phase extraction.2007

    • Author(s)
      Xue Y, Fujihara J et al.
    • Journal Title

      Journal of Analytical Toxicology 31・1

      Pages: 37-43

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Two deoxyribonuclease I gene polymorphisms and correlation between genotype and its activity in Japanese population.2007

    • Author(s)
      Fujihara J et al.
    • Journal Title

      Legal Medicine (In press)

    • NAID

      10024172712

    • Related Report
      2006 Annual Research Report
  • [Journal Article] CYP1A2 polymorphism (C>A at position-163) in Ovambos, Koreans and Mongolians.2007

    • Author(s)
      Fujihara J et al.
    • Journal Title

      Cell Biochemistry and Function (In press)

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Extremely high prevalence of DNASE1^*1 allele in African populations.2007

    • Author(s)
      Takeshita H, Fujihara J et al.
    • Journal Title

      Cell Biochemistry and Function (In press)

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Allele frequencies for nine STR loci in Ovambo population using AmpFlSTR【○!R】 profiler kit.2007

    • Author(s)
      Fujihara J et al.
    • Journal Title

      Forensic Science International (In press)

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Frequency of two human glutathione-S-transferase omega 1 polymorphisms (E155 deltion and E208K) in Ovambo and Japanese populations using the PCR-based genotyping method.2007

    • Author(s)
      Fujihara J et al.
    • Journal Title

      Clinical Chemistry Laboratory Medicine 45・5(In press)

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Actin-inhibition and folding of vertebrate deoxyribonuclease I are affected by mutations at residues 67 and 114.2006

    • Author(s)
      Fujihara J et al.
    • Journal Title

      Comparative Biochemistry and Physiology Part B 143・1

      Pages: 70-75

    • Related Report
      2006 Annual Research Report 2005 Annual Research Report
  • [Journal Article] One-step purification of mammalian Deoxyribonucleases I, and differences among pancreas, parotid and pancreas-parotid (mixed) types based on species-and organ-specific N-linked glycosylation.2006

    • Author(s)
      Fujihara J et al.
    • Journal Title

      Biochemistry (Moscow) 71・Suppl

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Analysis of genetic polymorphism of deoxyribonuclease I in Japanese from Shimane prefecture using genotyping method.2006

    • Author(s)
      Takatsuka H, Fujihara J et al.
    • Journal Title

      Shimane Journal of Medical Science 23

      Pages: 1-6

    • NAID

      110008755231

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Frequency of a single nucleotide (A2317G) and 56-bp variable number of tandem repeat polymorphisms within the deoxyribonuclease I gene in five ethnic populations.2006

    • Author(s)
      Fujihara J et al.
    • Journal Title

      Clinical Chemistry Laboratory Medicine 44・10

      Pages: 1188-1191

    • Related Report
      2006 Annual Research Report
  • [Journal Article] CYP2A6 polymorphism reveals differences in Japan and the existence of a specific variant in Ovambo and Turk populations.2006

    • Author(s)
      Takeshita H, Fujihara J et al.
    • Journal Title

      Human Biology 78・2

      Pages: 235-242

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Single-step purification by lectin affinity and deglycosylation analysis of recombinant human and porcine deoxyribonucleases I expressed in COS-7 cells.2006

    • Author(s)
      Fujihara J et al.
    • Journal Title

      Biotechnology Letters 28・4

      Pages: 215-221

    • Related Report
      2006 Annual Research Report
  • [Journal Article] One-step purification of mammalian Deoxyribonucleases I, and differences among pancreas, parotid and pancreas-parotid (mixed) types based on species-and organ-specific N-linked glycosylation.2006

    • Author(s)
      Fujihara J et al.
    • Journal Title

      Biochemistry (Moscow) 71

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Contamination by arsenic and other trace elements in tube-well water and its risk assessment to humans in Hanoi, Vietnam.2006

    • Author(s)
      Agusa T, Fujihara J et al.
    • Journal Title

      Environmental Pollution 139(1)

      Pages: 95-106

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Urinary 8-hydroxy-2'-deoxyguanosine in inhabitants chronically exposed to arsenic in groundwater in Cambodia.2006

    • Author(s)
      Kubota T, Fujihara J et al.
    • Journal Title

      Journal of Environmental Monitoring 8・2

      Pages: 293-299

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Single-step purification by lectin affinity and deglycosylation analysis of recombinant human and porcine deoxyribonuclease I expressed in COS-7 cells.2006

    • Author(s)
      Fujihara J et al.
    • Journal Title

      Biotechnology Letters (In press)

    • Related Report
      2005 Annual Research Report
  • [Journal Article] CYP2A6^*1A, ^*1B, ^*1F, ^*1G, ^*4A and ^*4D polymorphism reveals differences among small areas of Japan and the existence of a specific variant in Ovambo and Turk populations.2006

    • Author(s)
      Takeshita H, Fujihara J et al.
    • Journal Title

      Human Biology (In press)

    • Related Report
      2005 Annual Research Report
  • [Journal Article] CYP1A2 polymorphism (C>A at position-163) in Ovambos, Koreans and Mongolians.2006

    • Author(s)
      Fujihara J et al.
    • Journal Title

      Cell Biochemistry and Function (In press)

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Analysis of genetic polymorphism of deoxyribonuclease I (DNase I) in Ovambo and Turk populations using genotyping method.2005

    • Author(s)
      Fujihara J et al.
    • Journal Title

      Biochemical Genetics 43・11/12

      Pages: 631-638

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Placental transfer of arsenic to fetus of Dall's porpoises (Phocoenoides dalli).2005

    • Author(s)
      Kubota T, Fujihara J et al.
    • Journal Title

      Marine Pollution Bulletin 51・8-12

      Pages: 845-849

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Deoxyribonucleases I typing from tears.2005

    • Author(s)
      Fujihara J et al.
    • Journal Title

      Shimane Journal of Medical Science 22・2

      Pages: 45-49

    • NAID

      110008755238

    • Related Report
      2005 Annual Research Report
  • [Journal Article] A fatal case of pure ethanol ingestion.2005

    • Author(s)
      Hieda Y, Fujihara J et al.
    • Journal Title

      Forensic Science International 149・2/3

      Pages: 243-247

    • Related Report
      2005 Annual Research Report

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Published: 2005-04-01   Modified: 2016-04-21  

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