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2011 Fiscal Year Annual Research Report

血管内皮細胞の低酸素誘導性形質変化の分子機序の解明

Research Project

Project/Area Number 21590335
Research InstitutionThe University of Tokushima

Principal Investigator

冨田 修平  徳島大学, 大学院・ヘルスバイオサイエンス研究部, 准教授 (00263898)

Co-Investigator(Kenkyū-buntansha) 玉置 俊晃  徳島大学, 大学院・ヘルスバイオサイエンス研究部, 教授 (80179879)
Keywords血管内皮細胞 / 低酸素応答 / 肺高血圧症 / 転写因子 / HIF / 微小環境 / 酸化ストレス / 活性酸素
Research Abstract

本研究課題では、微小低酸素環境が引き起こす血管再構築における血管内皮細胞(EC)の役割を明確化するために、ECのHIFシグナルによるその機能的・形態的変化がどのように血管再構築の主要変化である血管平滑筋(SMC)の増殖・遊走を引き起こすのか、その分子機構の解明を目指してい。具体的には、ECおよびSMCの各細胞系譜特異的HIF-1遺伝子欠失マウスにおける肺高血圧症モデルあるいは大腿動脈結紮虚血モデルによる血管再構築を主な研究対象とする。確立したマウスを用いて血管再構築モデルを作製することにより、生体内でECあるいはSMCに発現するHIF分子がどのように血管再構築過程に関与するのかを形態的観点より理解する、以上の結果をもとに、ECのHIFシグナル関連分子による血管再構築の人為的制御システムを構築し、ECを標的とした血管再構築の伴う疾患の新たな治療方針を提案する。本研究課題遂行期間に、我々はEC特異的なHIF-1beta遺伝子欠失マウスを作製し、モノクロタリン誘導性肺高血圧症モデルおよびその評価系の確立を行った。そして、肺高血圧症の病態は、ECに発現するHIF-1betaが、内皮由来血管収縮因子の一つであるendotheline-1の発現を介して、形成されることが分かった。本変異マウスの肺高血圧症モデルでは、右心系負荷を示す右心室重量/左心室重量比率は減少し、組織学的解析による小肺動脈の血管周囲の筋層化も軽減されていた。これうを踏まえ、細胞内での分子レベルの変化について解析するために、肺動脈血管内皮細胞の単離技術の確立を試みた。精製度80%程度のECの単雌が可能になった。

  • Research Products

    (22 results)

All 2012 2011 Other

All Journal Article (8 results) (of which Peer Reviewed: 3 results) Presentation (13 results) Remarks (1 results)

  • [Journal Article] Iron reduction by deferoxamine leads to amelioration of adiposity via the regulation of oxidative stress and inflammation in obese and type 2 diabetes KKAy mice2011

    • Author(s)
      Tajima S, Ikeda Y, Sawada K, Yamano N, Horinouchi Y, Kihira Y, Ishizawa K, Izawa-Ishizawa Y, Kawazoe K, Tomita S, Minakuchi K, Tsuchiya K, and Tamaki T
    • Journal Title

      Am J Physiol Endocrinol Metab

      Volume: 302 Pages: E77-E86

    • DOI

      doi:10.1152/ajpendo.00033.2011

  • [Journal Article] Protective effect of photodegradation product of nifedipine against tumor necrosis factor alpha-induced oxidative stress in human glomerular endothelial cells2011

    • Author(s)
      Fukuhara Y, Tsuchiya K, Horinouchi Y, Tajima S, Kihira Y, Hamano S, Kawazoe K, Ikeda Y, Ishizawa K, Tomita S and Tamaki T
    • Journal Title

      The Journal of Medical Investigation

      Volume: 59 Pages: 118-126

    • DOI

      doi:10.2152/jmi.58.118

  • [Journal Article] Deferoxamine promotes angiogenesis via the activation of vascular endothelial cell function2011

    • Author(s)
      Ikeda Y, Tajima S, Yoshida S, Yamano N, Kihira Y, Ishizawa K, Aihara K, Tomita S, Tsuchiya K and Tamaki T
    • Journal Title

      Atherosclerosis

      Volume: 215 Pages: 339-347

    • DOI

      doi:10.1016/j.atherosclerosis.2011.01.009

  • [Journal Article] Antioxidant effects of photodegradation product of nifedipine2011

    • Author(s)
      Horinouchi Y, Tsuchiya K, Taoka C, Tajima S, Kihira Y, Matsuda Y, Shishido K, Yoshida M, Hamano S, Kawazoe K, Ikeda Y, Ishizawa K, Tomita S, Tamaki T
    • Journal Title

      Chem Pharm Bull

      Volume: 59 Pages: 208-214

    • DOI

      doi:10.1248/cpb.59.208

  • [Journal Article] Basic fibroblast growth factor regulates glucose metabolism through glucose transporter 1 induced by hypoxia-inducible factor-1α in adipocytes2011

    • Author(s)
      Kihira Y, et al
    • Journal Title

      Int J Biochem Cell Biol

      Volume: 43 Pages: 1602-1611

    • DOI

      10.1016/j.biocel.2011.07.009

    • Peer Reviewed
  • [Journal Article] Drug discovery for overcoming CKD : Development of drugs on endo thelial cell protection for overcoming CKD2011

    • Author(s)
      Ishizawa K, et al
    • Journal Title

      J Pharmacol Sci

      Volume: 115 Pages: 466-470

    • DOI

      doi:10.1254/jphs.10R38FM

    • Peer Reviewed
  • [Journal Article] Inflammatory responses of Hif-1α in T cells observed in development of vascular remodeling2011

    • Author(s)
      Tomita S, et al
    • Journal Title

      J Pharmacol Sci

      Volume: 115 Pages: 433-439

    • DOI

      doi:10.1254/jphs.10R22FM

    • Peer Reviewed
  • [Journal Article] 生体の低酸素応答と病態-血管リモデリングにおける転写因子HIFの関与-2011

    • Author(s)
      冨田修平, 他
    • Journal Title

      四国医学雑誌

      Volume: 67 Pages: 3-6

  • [Presentation] The alternation of iron metabolism in high fat diet-induced obese and diabetic mice2012

    • Author(s)
      Noriko Yamano
    • Organizer
      第34回日本分子生物学会年会
    • Place of Presentation
      パシフィコ横浜(横浜市)
    • Year and Date
      2012-11-12
  • [Presentation] Smooth Muscle Cell-Specific Hypoxia-Inducible Factor-1α Deficiency Attenuates Angiotensin II-Induced Vascular Remodeling in Mice2011

    • Author(s)
      Masaki Imanishi
    • Organizer
      AHA scientific sessions 2011
    • Place of Presentation
      Orange County Convention Center (Orlando)
    • Year and Date
      2011-11-16
  • [Presentation] Preconditionining of mice with prolyl hydroxylase inhibitor, dimethylo xalylglycine, prevents skin flap necrosis2011

    • Author(s)
      Mitsuru Takaku
    • Organizer
      AHA scientific sessions 2011
    • Place of Presentation
      Orange County Convention Center (Orlando)
    • Year and Date
      2011-11-16
  • [Presentation] PHD阻害剤の虚血皮弁生存拡大に対する効果2011

    • Author(s)
      高久暢
    • Organizer
      第21回日本循環薬理学会
    • Place of Presentation
      岡山大学(岡山市)
    • Year and Date
      2011-11-04
  • [Presentation] Heparin Cofactor II Promotes Angiogenesis via an AMPK-eNOS Signaling Pathway2011

    • Author(s)
      Yasumasa Ikeda
    • Organizer
      High Blood Pressure Research Scientific Sessions 2011 Scientific Sessions
    • Place of Presentation
      The Dolphin Hotel (Orlando)
    • Year and Date
      2011-09-28
  • [Presentation] Hypoxia-inducible Factor-1α Deficiency in Smooth Muscle Cells Suppresses Angiotensin II-induced Vascular Remodeling in Mice2011

    • Author(s)
      Masaki Imanishi
    • Organizer
      High Blood Pressure Research Scientific Sessions 2011 Scientific Sessions
    • Place of Presentation
      The Dolphin Hotel (Orlando)
    • Year and Date
      2011-09-28
  • [Presentation] Inhibition of Adipocyte Hypertrophy by Deferoxiamine Diabetic KKAy mice2011

    • Author(s)
      Soichiro Tajima
    • Organizer
      High Blood Pressure Research Scientific Sessions 2011 Scientific Sessions
    • Place of Presentation
      The Dolphin Hotel (Orlando)
    • Year and Date
      2011-09-28
  • [Presentation] Angiotensin II-induced Vascular Remodeling is Improved by Nitrosoni fedipine, a Possible New Class Drug Against Oxidative Stress2011

    • Author(s)
      Yuki Ishizawa
    • Organizer
      High Blood Pressure Research Scientific Sessions 2011 Scientific Sessions
    • Place of Presentation
      The Dolphin Hotel (Orlando)
    • Year and Date
      2011-09-28
  • [Presentation] Nitorosonifedipine is a new class drug to improve angiotensin II‐induced vascular remodeling2011

    • Author(s)
      Keisuke Ishizawa
    • Organizer
      European Society of Cardiology Congress 2011
    • Place of Presentation
      Themed villages (Paris)
    • Year and Date
      2011-08-27
  • [Presentation] Preconditioning of mice with a PHD inhibitor, dimethyloaxylglycine, prevent skin flap necrosis2011

    • Author(s)
      Mitsuru Takaku
    • Organizer
      ISSOT (International Society on Oxygen Transport to Tissue) 2011
    • Place of Presentation
      Georgetown University Conference Center (Washihgton DC)
    • Year and Date
      2011-08-25
  • [Presentation] Characterization of mice lacking HIF-1α gene in renal ischemia-reperf usion injury2011

    • Author(s)
      Shuhei Tomita
    • Organizer
      ISSOT (International Society on Oxygen Transport to Tissue) 2011
    • Place of Presentation
      Georgetown University Conference Center (Washington DC)
    • Year and Date
      2011-08-25
  • [Presentation] 鉄キレート剤は肥満の脂肪肥大進展を抑制する2011

    • Author(s)
      田島壮一郎
    • Organizer
      第120回日本薬理学会近畿部会
    • Place of Presentation
      京都国際会館(京都市)
    • Year and Date
      2011-06-22
  • [Presentation] Increment intracellular labile iron enhances angiotensin-induced intracellular adhesion molecule-1 (ICAM-1) expression in human glomerular endothelial cells2011

    • Author(s)
      Masaki Imanishi
    • Organizer
      World Congress of Nephrology 2011
    • Place of Presentation
      Vancouver Convention Center (Vancouver)
    • Year and Date
      2011-04-10
  • [Remarks]

    • URL

      http://puh2.db.tokushima-u.ac.jp/ERD/person/73029/profile-ja.html

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Published: 2013-06-26  

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