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2012 Fiscal Year Research-status Report

早老症候群の疾患iPS細胞樹立と加齢性変化の分子メカニズム解明

Research Project

Project/Area Number 24659346
Research InstitutionChiba University

Principal Investigator

横手 幸太郎  千葉大学, 医学(系)研究科(研究院), 教授 (20312944)

Co-Investigator(Kenkyū-buntansha) 清水 孝彦  千葉大学, 医学(系)研究科(研究院), 准教授 (40301791)
Project Period (FY) 2012-04-01 – 2014-03-31
KeywordsWerner症候群 / iPS細胞 / 早老症候群 / 老化 / 遺伝子発現
Research Abstract

Werner症候群(以下、WS)の皮膚由来線維芽細胞は、通常、数代の継代培養により老化関連βガラクトシダーゼ活性上昇などの細胞老化形質を示し、分裂を停止する。同細胞にOct-4, Sox2, Klf4, c-Mycのいわゆる山中4因子をレトロウイルスベクターで導入し、老化関連βガラクトシダーゼ活性低下や無限分裂能の獲得を確認した。この細胞は、ES細胞に特徴的な未分化マーカーを発現し、免疫不全マウスの精巣への移植により三胚葉系細胞への分化(奇形腫形成)を確認し得た。以上の結果から、リプログラミングによりWS患者由来iPS細胞を得ることができた (Shimamoto et al. submitted for publication)。

Current Status of Research Progress
Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

WS由来iPS細胞を樹立できたため。

Strategy for Future Research Activity

WS由来iPS 細胞から分化誘導した細胞(以下、分化細胞と略)について、その継代初期(passage 2~5)に経時的にRNA を抽出、マイクロアレイによる網羅的な解析を実施、健常者由来iPS 細胞との比較により、早発性老化に関わる新規の候補遺伝子を同定する。In vitro で、RNA 干渉によるsilencing ならびに過剰発現系を用い、分化細胞におけるこれら遺伝子の機能を解析する。さらに、ChIP-sequenceによりゲノムワイドなヒストン修飾の解析を行い、早老形質に関連したエピゲノム変化と老化関連遺伝子の発現調節の関連を理解する。近年、長寿遺伝子として知られるSirtuin の一つSirt6が、ヒストンの脱アセチル化を介してテロメアとWRN ヘリケースの結合を強め、細胞老化を抑制することが示唆されており(Michishita E et al. Nature, 2008)、WS細胞を対象としたエピジェネティック解析が、新たな発見をもたらすと予想する。

Expenditure Plans for the Next FY Research Funding

研究試薬に600千円、成果発表費用に100千円の合計700千円を予定している。

Research Products

(24 results)

All 2013 2012 Other

All Journal Article Presentation

  • [Journal Article] Alteration of VEGF and Angiopoietins expressions in diabetic glomeruli implicated in the development of diabetic nephropathy.2013

    • Author(s)
      Sonezaki K
    • Journal Title

      dvanced Studies in Medical Sciences

      Volume: 1 Pages: 11-28

    • Peer Reviewed
  • [Journal Article] Risk of Cardiovascular Diseases Is Increased Even with Mild Diabetic Retinopathy: The Japan Diabetes Complications Study.2013

    • Author(s)
      Kawasaki R
    • Journal Title

      Opthalmology

      Volume: 120 Pages: 574-582

    • Peer Reviewed
  • [Journal Article] Diagnostic criteria for Werner syndrome based on Japanese nationwide epidemiological survey.2013

    • Author(s)
      Takemoto M
    • Journal Title

      Geriatr Gerontol Int

      Volume: 13 Pages: 475-481

    • Peer Reviewed
  • [Journal Article] Sitagliptin successfully ameliorates glycemic control in werner syndrome with diabetes2012

    • Author(s)
      Kitamoto T, Takemoto M, Fujimoto M, Ishikawa T, Onishi S, Okabe E, Ishibashi R, Kobayashi K, Kawamura H, Yokote K.
    • Journal Title

      Diabetes Care

      Volume: 35 (12) Pages: e83

    • DOI

      10.2337/dc12-1179

    • Peer Reviewed
  • [Journal Article] The role of the hypoxia-inducible factor 1 binding site in the induction of aquaporin-1 mRNA expression by hypoxia.2012

    • Author(s)
      Tanaka A
    • Journal Title

      DNA Cell Biol

      Volume: 30(8) Pages: 539-544

    • Peer Reviewed
  • [Journal Article] Smad3 contributes to positioning of proliferating cells in colonic crypts by inducing EphB receptor protein expression.2012

    • Author(s)
      Furukawa K
    • Journal Title

      Biochem Biophys Res Commun

      Volume: 405(4) Pages: 521-526

    • Peer Reviewed
  • [Journal Article] Factors associated with the efficiency of PBSC collection in POEMS syndrome patients undergoing autologous PBSC transplantation.2012

    • Author(s)
      Shimizu N
    • Journal Title

      Bone Marrow Transplantation

      Volume: 47 Pages: 1010-1012

    • Peer Reviewed
  • [Journal Article] Angiotensin II Type 1 Receptor Blocker Prevents Renal Injury via Inhibition of the Notch Pathway in Ins2 Akita Diabetic Mice.2012

    • Author(s)
      Koshizaka M
    • Journal Title

      Exp Diabetes Res

      Volume: 15987 Pages: -

    • DOI

      10.1155/2012/159874

    • Peer Reviewed
  • [Journal Article] Incidence and characteristics of metabolic disorders and vascular complications in individuals with Werner syndrome in Japan.2012

    • Author(s)
      Okabe E
    • Journal Title

      J Am Geriatr Soc

      Volume: 60(5) Pages: 997-998

    • Peer Reviewed
  • [Journal Article] Mobilization of PBSCs in poor mobilizers with POEMS syndrome using G-CSF with plerixafor.2012

    • Author(s)
      Shimizu N
    • Journal Title

      Bone Marrow Transplant

      Volume: 47(12) Pages: 1587-1588

    • Peer Reviewed
  • [Journal Article] Ezh2 augments leukemogenicity by reinforcing differentiation blockage in acute myeloid leukemia.2012

    • Author(s)
      Tanaka S
    • Journal Title

      Blood

      Volume: 120(5) Pages: 1107-1017

    • Peer Reviewed
  • [Journal Article] Circulating soluble LR11/SorLA levels are highly increased and ameliorated by chemotherapy in acute leukemias.2012

    • Author(s)
      Sakai S
    • Journal Title

      Clin Chim Acta

      Volume: 413 Pages: 1542-1548

    • Peer Reviewed
  • [Journal Article] The reduced form of coenzyme Q10 improves glycemic control in patients with type 2 diabetes: An open label pilot study.2012

    • Author(s)
      Mezawa M
    • Journal Title

      Biofactors

      Volume: 38(6) Pages: 416-421

    • Peer Reviewed
  • [Journal Article] The anti-ulcer agent, irsogladine, increases insulin secretion by MIN6 cells.2012

    • Author(s)
      Matsumoto T
    • Journal Title

      Eur J Pharmacol

      Volume: 685 Pages: 213-217

    • Peer Reviewed
  • [Journal Article] Intestinal epithelial cells with impaired autophagy lose their adhesive capacity in the presence of TNF-α.2012

    • Author(s)
      Saito M
    • Journal Title

      Dig Dis Sci

      Volume: 57(8) Pages: 2022-2030

    • Peer Reviewed
  • [Journal Article] Japanese diabetic patients with Werner syndrome exhibit high incidence of cancer.2012

    • Author(s)
      Onishi S
    • Journal Title

      Acta Diabetol. Epub

      Volume: 49 Pages: S259-S260

    • DOI

      10.1007/s00592-012-0424-z

    • Peer Reviewed
  • [Journal Article] Posterior reversible encephalopathy syndrome in an adult patient with acute lymphoblastic leukemia after remission induction chemotherapy.2012

    • Author(s)
      Tsukamoto S
    • Journal Title

      Int J Hematol

      Volume: 95(2) Pages: 204-208

    • Peer Reviewed
  • [Journal Article] Severe hyponatremia caused by syndrome of inappropriate secretion of antidiuretic hormone developed as initial manifestation of human herpesvirus-6-associated acute limbic encephalitis after unrelated bone marrow transplantation.2012

    • Author(s)
      Kawaguchi T
    • Journal Title

      Transpl Infect Dis

      Volume: 15 Pages: E54-E57

    • DOI

      10.1111/tid.12029

    • Peer Reviewed
  • [Journal Article] Multicenter Study to Determine the Diagnosis Criteria of Heterozygous Familial Hypercholesterolemia in Japan.2012

    • Author(s)
      Harada-Shiba M
    • Journal Title

      J Atheroscler Thromb

      Volume: 19(11) Pages: 1019-1026

    • Peer Reviewed
  • [Journal Article] Guidelines for the Management of Familial Hypercholesterolemia.2012

    • Author(s)
      Harada-Shiba M
    • Journal Title

      J Atheroscler Thromb

      Volume: 19 (12) Pages: 1043-1060

    • Peer Reviewed
  • [Presentation] 脂質異常症

    • Author(s)
      横手幸太郎
    • Organizer
      第47回日本成人病(生活習慣病)学会学術集会
    • Place of Presentation
      都市センターホール(東京)
  • [Presentation] Lipid management guideline in A-P region.

    • Author(s)
      Yokote K
    • Organizer
      8th Congress of Asian-Pacific Society of Atherosclerosis and Vascular Diseases
    • Place of Presentation
      Hilton Phuket Arcadia Resort and Spa( Thailand)
  • [Presentation] Familial hypercholesterolemia, model of care in Asian-Pacific region.

    • Author(s)
      Yokote K
    • Organizer
      8th Congress of Asian-Pacific Society of Atherosclerosis and Vascular Diseases
    • Place of Presentation
      Hilton Phuket Arcadia Resort and Spa( Thailand)
  • [Presentation] Cellular regulation in diabetic complications.

    • Author(s)
      Yokote K
    • Organizer
      2012 Shanghai Symposium on Obesity and Diabetes
    • Place of Presentation
      Chinese Academy of Sciences(China)
    • Invited

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Published: 2014-07-24  

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