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Regulatory mechanism of HIV-ltranscription and its therapeutic control

Research Project

Project/Area Number 16017291
Research Category

Grant-in-Aid for Scientific Research on Priority Areas

Allocation TypeSingle-year Grants
Review Section Biological Sciences
Research InstitutionNAGOYA CITY UNIVERSTTY

Principal Investigator

OKAMOTO Takashi  Nagoya City University, Graduate School of Medical Sciences, Professor, 大学院医学研究科, 教授 (40146600)

Co-Investigator(Kenkyū-buntansha) KANAZAWA Satoshi  Nagoya City University, Graduate School of Medical Sciences, Research Associate, 大学院医学研究科, 助手 (90347401)
ASAMITST Kaori  Nagoya City University, Graduate School of Medical Sciences, Research Associate, 大学院医学研究科, 助手 (20381783)
Project Period (FY) 2004 – 2005
Project Status Completed (Fiscal Year 2005)
Budget Amount *help
¥15,000,000 (Direct Cost: ¥15,000,000)
Fiscal Year 2005: ¥7,500,000 (Direct Cost: ¥7,500,000)
Fiscal Year 2004: ¥7,500,000 (Direct Cost: ¥7,500,000)
KeywordsHIV / transcriptional regulation / Tat / NF-κB / viral replication / inhibitor / OGG1 / maintenance of genome integrity / IKK阻害剤 / AP-4 / 立体構造 / 計算化学 / HIV転写活性化 / RNA helicase A / 立体構造解析 / 分子モデリング / Bioinformatics
Research Abstract

In an attempt to identify the cellular target genes for HIV-encocled Tat, we have performed gene expression profile analysis and fund OGG1, the gene encoding an enzyme responsible for the repair of 8-oxo-dG, an damaged Guanine residue due to the action of radieal oxygen species (ROS). Among the as-regulatory elements located within the promoter of OGG1 gene, we have identified AP-4 sites to be responsible for the Tat-mediated OGG1 upregulation. When AP-4 sites were mutated the OGG1 gene expression was upregulated, indicating that AP-4 plays a negative role in OGG1 gene expression, and the effect of Tat was abolished. Using chromatin immunoprecipitation (ChIP) assay we fund that AP-4 binds to these AP-4 sites on the OGG1 promoter and AP-4 was reliesed from the OGG1 promoter upon Tat transduction. We also fund that Tat binds to AP-4 by immunoprecipitation followed by Western blotting. When the amounts of 8-oxo-dG level were measured, we found the dramatic decrease of the 8-oxo-dG upon Tat transduction. These findings indicate a possibility that Tat plays a role in Maintaining the genomic integrity of the HIV-infected cells and HIV proviral DNA.
We also examined the effect of a novel inhibitor of IKK that is primarily involved in the signal induced HIV replication from the latently infected cells. The HIV production was greatly augmented by stimulating cells infected with HIV and the pretreatment of cells with ACHP greatly inhibited the viral production under non-cytotoxic concentrations with IC 50 and CC50 values of 0.5 μM and 15 μM, respectively (therapeutic window being approximately 30). These findings suggest that ACHP and its derivatives may have therapeutic effect to prevent AIDS development by preventing HIV replication from the latently infected cells.

Report

(3 results)
  • 2005 Annual Research Report   Final Research Report Summary
  • 2004 Annual Research Report
  • Research Products

    (42 results)

All 2006 2005 2004 Other

All Journal Article (34 results) Book (5 results) Patent(Industrial Property Rights) (3 results)

  • [Journal Article] NF-kB signaling and carcinogenesis.2006

    • Author(s)
      Okamoto, T.
    • Journal Title

      Curr. Pharm. Design. (In press)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Induction of cell death in adult T-cell leukemia cells by a novel I κB kinase inhibitor.2006

    • Author(s)
      Okamoto, T.
    • Journal Title

      Leukemia. (In press)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Annual Research Report 2005 Final Research Report Summary
  • [Journal Article] Inhibition of HIV-1 replication in latently infected cells by a novel IkB kinase inhibitor.2006

    • Author(s)
      Victoriano, A.F.B.
    • Journal Title

      Antimicob. Agents Chemother. 50

      Pages: 547-555

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] NF-kB signaling and carcinogenesis.2006

    • Author(s)
      Okamoto, T.
    • Journal Title

      Cun. Pharm. Design.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] nduction of cell death in adult T-cell leukemia cells by a novel I K B kinase inhibitor.2006

    • Author(s)
      Okamoto, T.
    • Journal Title

      Leukemia.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Oxidative Stress in Rheumatoid Arthritis.2006

    • Author(s)
      Okamoto, T.
    • Journal Title

      Oxidative Stress, Inflammation and Health Marcel Dekker

      Pages: 245-270

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] NF-kB signaling an carcinogenesis.2006

    • Author(s)
      Okamoto, T.
    • Journal Title

      Curr.Pharm.Design. (In press)

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Inhibition of HIV-1 replication in latently infected cells by a novel IkB kinase inhibitor.2006

    • Author(s)
      Victoriano, A.F.B.
    • Journal Title

      Antimicob Agents Chemother. 50

      Pages: 547-555

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Positive correlation between sialyl Lewis X expression and pathological findings in renal cell carcinoma.2005

    • Author(s)
      Tozawa, K.
    • Journal Title

      Kidney Int. 67

      Pages: 1391-1396

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Growth inhibition of multiple myeloma cells by a novel 1kB kinase inhibitor.2005

    • Author(s)
      Sanda, T.
    • Journal Title

      Clin. Can. Res. 11

      Pages: 1974-1982

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] 53BP2 induces apoptosis through the mitochondrial death pathway.2005

    • Author(s)
      Kobayashi, S.
    • Journal Title

      Genes Cells. 10

      Pages: 253-260

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Annual Research Report 2005 Final Research Report Summary
  • [Journal Article] Establishment of a simple and quantitative immunospot assay for detecting anti-type II collagen antibody using infrared fluorescence imaging system (IFIS).2005

    • Author(s)
      Ota, S.
    • Journal Title

      J. Immunol. Methods. 299

      Pages: 189-198

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Inhibition of the 53BP2S-mediated apoptosis by nuclear factor kB and Bcl-2 family proteins.2005

    • Author(s)
      Takahashi, N.
    • Journal Title

      Genes Cells. 10

      Pages: 803-811

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Annual Research Report 2005 Final Research Report Summary
  • [Journal Article] Induction of OGG 1 gene expression by HIV-1 Tat.2005

    • Author(s)
      Imai, K.
    • Journal Title

      J. Biol. Chem. 280

      Pages: 26701-26713

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Prevention of the ultraviolet B-mediated skin photoaging by a nuclear factor κB inhibitor parthenolide.2005

    • Author(s)
      Tanaka, K.
    • Journal Title

      J. Pharmacol. Exp. Ther. 315

      Pages: 624-630

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Estrogen Stimulates Transcription and Replication of Human Immunodeficiency Virus Type 1 (HIV-1).2005

    • Author(s)
      Katagiri.D.
    • Journal Title

      Int. Immunopharm. 6

      Pages: 170-181

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Positive correlation between sialyl Lewis X expression ani pathological findings in renal cell carcinoma.2005

    • Author(s)
      Tozawa, K.
    • Journal Title

      Kidney Int. 67

      Pages: 1391-1396

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Growth inhibition of multiple myeloma cells by a novel IkB kinase inhibitor. Growth inhibition of multiple myeloma cells by a novel 1kB kinase inhibitor.2005

    • Author(s)
      Sanda, T.
    • Journal Title

      Clin. Can. Res. 11

      Pages: 1974-1982

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Induction of OGG1 gene expression by HIV-1 Tat.2005

    • Author(s)
      Imai, K.
    • Journal Title

      J.Biol.Chem. 280

      Pages: 26701-26713

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Prevention of the ultraviolet B-mediated skin photoaging by a nuclear factor K B inhibitor parthenolide.2005

    • Author(s)
      Tanaka, K.
    • Journal Title

      J. Pharmacol. Exp. Ther. 315

      Pages: 624-630

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Estrogen Stimulates Transcription and Replication of Human Immunodeficiency Virus Type 1 (HIV-1).2005

    • Author(s)
      Katagiri.D.
    • Journal Title

      Immunopharm. 6

      Pages: 170-181

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Positive correlation between sialyl Lewis X expression and pathological findings in renal cell carcinoma.2005

    • Author(s)
      Tazawa, K.
    • Journal Title

      Kidney Int. 67

      Pages: 1391-1396

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Growth inhibition o multiple myeloma cells by a novel IkB kinase inhibitor.2005

    • Author(s)
      Sanda, T.
    • Journal Title

      Clin.Can.Res. 11

      Pages: 1974-1982

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Establishment of a simple and quantitative immunospot assay for detecting anti-type II collagen antibody using infrared fluorescence imaging system (IFIS).2005

    • Author(s)
      Ota, S.
    • Journal Title

      J.Immunol.Methods. 299

      Pages: 189-198

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Induction of OGG 1 gene expression by HIV-1 Tat.2005

    • Author(s)
      Imai, K.
    • Journal Title

      J.Biol.Chem. 280

      Pages: 26701-26713

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Prevention of the ultraviolet B-mediate skin photoaging by a nuclear factor κB inhibitor parthenolide.2005

    • Author(s)
      Tanaka, K.
    • Journal Title

      J.Pharmacol.Exp.Ther. 315

      Pages: 624-630

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Estrogen Stimulates Transcription and Replication of Human Immunodeficiency Virus Type 1 (HIV-1).2005

    • Author(s)
      Katagiri, D.
    • Journal Title

      Int.Immunopharm. 6

      Pages: 170-181

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Growth inhibition of multiple myeloma cells by a novel IkB kinase inhibitor2005

    • Author(s)
      Sanda, T.
    • Journal Title

      Clin.Can.Res. (in press)

    • Related Report
      2004 Annual Research Report
  • [Journal Article] 53BP2 induces apoptosis through the mitochondrial death pathway.2005

    • Author(s)
      Kobayashi, S.
    • Journal Title

      Genes Cells (in press)

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Establishment of a simple and quantitative immunospot assay for detecting anti-type II collagen antibody using infrared fluorescence imaging system (IFIS)2005

    • Author(s)
      Ota, S.
    • Journal Title

      J.Immunol.Methods (in press)

    • Related Report
      2004 Annual Research Report
  • [Journal Article] The epigenetic alteration of synovial cell gene expression in rheumatoid arthritis and the roles of NF-kB and Notch signaling pathways.2005

    • Author(s)
      Okamoto, T.
    • Journal Title

      Modem Rheum. (in press)

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Expression of 53BP2 and ASPP2 proteins from TP53BP2 gene by alternative splicing2004

    • Author(s)
      Takahashi, N.
    • Journal Title

      Biochem.Biophys.Res.Commun. 315

      Pages: 434-438

    • Related Report
      2004 Annual Research Report
  • [Journal Article] RNA helicase A interacts with nuclear factor-[[kappa]]B p65 and functions as a transcriptional coactivator2004

    • Author(s)
      Tetsuka, T.
    • Journal Title

      Eur.J.Biochem. 271

      Pages: 3741-3751

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Inhibition of HIV-1 replication in inilf151iMed cells by a novel IkB kinase inhibitor.

    • Author(s)
      Victoriano, A.F.B.
    • Journal Title

      Antimicob. Agents Chemother. 50

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Book] Oxidative Stress in Rheumatoid Arthritis2006

    • Author(s)
      Okamoto, T.
    • Publisher
      Marcel Dekker
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Book] 隔月刊誌 「炎症と免疫」Vol.14 No.2 関節リウマチ患者滑膜細胞の遺伝子発現プロフィール解析2006

    • Author(s)
      岡本 尚
    • Total Pages
      13
    • Publisher
      先端医学社
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Book] 厳選辞書シリーズ「転写」エロンゲータ SII エロンギン P-TEFb CSB ELL DSIF NELF2006

    • Author(s)
      岡本 尚
    • Publisher
      羊土社(In press)
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Annual Research Report 2005 Final Research Report Summary
  • [Book] Oxidative Stress in Rheumatoid Arthritis2006

    • Author(s)
      Okamoto, T.
    • Publisher
      Marcel Dekker (In press)
    • Related Report
      2005 Annual Research Report
  • [Book] 炎症と免疫 Vol.14 No.2「関節リウマチ患者滑膜細胞の遺伝子発現プロフィール解析」(隔月刊誌)2006

    • Author(s)
      岡本 尚
    • Total Pages
      13
    • Publisher
      先端医学社
    • Related Report
      2005 Annual Research Report
  • [Patent(Industrial Property Rights)] IKK阻害剤2005

    • Inventor(s)
      岡本 尚, 北出幸夫
    • Industrial Property Rights Holder
      名古屋市, 国立大学法人岐阜大学
    • Industrial Property Number
      2005-292660
    • Filing Date
      2005-10-05
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Patent(Industrial Property Rights)] ヒト関節リウマチの病態を再現するトランスジェニック非ヒト哺乳動物2005

    • Inventor(s)
      金澤 智, 岡本 尚
    • Industrial Property Rights Holder
      財)中部TLO, 岡本 尚, 金澤智
    • Industrial Property Number
      2004-066218
    • Filing Date
      2005-03-08
    • Related Report
      2004 Annual Research Report
  • [Patent(Industrial Property Rights)] IKK阻害剤

    • Inventor(s)
      岡本尚, 北出幸夫
    • Industrial Property Rights Holder
      名古屋市, 国立大学法人岐阜大学
    • Industrial Property Number
      2005-292660
    • Related Report
      2005 Annual Research Report

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

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