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爆発的に増殖する肝上皮性幹様細胞の大量培養法の確立とそれを応用した人工肝臓の作成

Research Project

Project/Area Number 15659305
Research Category

Grant-in-Aid for Exploratory Research

Allocation TypeSingle-year Grants
Research Field Digestive surgery
Research InstitutionGunma University

Principal Investigator

小暮 公孝  群馬大学, 医学部, 講師 (80143220)

Co-Investigator(Kenkyū-buntansha) 小島 至  群馬大学, 生体調節研究所, 教授 (60143492)
星野 洪郎  群馬大学, 医学系研究科, 教授 (00107434)
Project Period (FY) 2003 – 2004
Project Status Completed (Fiscal Year 2004)
Budget Amount *help
¥3,300,000 (Direct Cost: ¥3,300,000)
Fiscal Year 2004: ¥1,300,000 (Direct Cost: ¥1,300,000)
Fiscal Year 2003: ¥2,000,000 (Direct Cost: ¥2,000,000)
Keywords肝上皮性幹様細胞 / 肝再生 / 人工肝臓 / 大量培養 / 肝オルガノイド
Research Abstract

本研究では爆発的に増殖する肝上皮性幹様細胞の大量培養法の確立とそれを応用した人工肝臓の作成法を確立することを目的としている。本年度の研究実施計画としては1.爆発的に増殖する肝上皮性幹様細胞の機能細胞への分化誘導、2.肝上皮性幹様細胞の発現蛋白の同定の二つを目標にした。第1の目標に関しては、採取、分離した肝上皮性幹様細胞をラットの皮下に移植して肝細胞塊を形成させることに成功した。この細胞塊の病理学的所見では通常の肝細胞よりも小型の肝細胞が増殖し集塊を形成していた。免疫組織学的にはAFP、アルブミンは弱陽性に染まるが通常の肝細胞と比較すると弱いものであった。第2の目標の肝上皮性幹様細胞そのものをの免疫組織学的に各種抗体を用いて染色し発現蛋白を検討した結果はAFP陽性,CD34一部陽性,Flk-1強陽性,PECOM-1強陽性、CK7/17ごく一部陽性、Albumin陽性(核),von Willebrand Factors抗体は一部陽性であった。また、HE, PAS染色ではエオジン好性の細胞質、PAS陽性顆粒が認められた。肝上皮性細胞は幹様細胞の性格を持つことからヘリング管由来ではないかと考える説もあるが今回の検討でCK7/17は疑陽性なのに対し内皮細胞に認められるFlk-1、CD34,PECOM-1が強陽性であったことはこの細胞が内皮細胞系列であることを示唆するものと考えられた。この細胞にはVEGFのreceptorであるFlk-1が強く発現していることからVEGFを投与することにより劇的に増殖あるいは分化する可能性が示唆された。そして、この細胞を肝機能を発揮する肝実質細胞へ分化転換させることにより、人工肝臓作成へ応用できる可能性が示された。

Report

(2 results)
  • 2004 Annual Research Report
  • 2003 Annual Research Report
  • Research Products

    (17 results)

All 2004 2003 Other

All Journal Article (5 results) Publications (12 results)

  • [Journal Article] Activin A augments vascular endothelial growth factor activity in promoting branching tubulogenesis in hepatic sinusoidal endothelial cells.2004

    • Author(s)
      Daisuke Endo
    • Journal Title

      Journal of Hepatology 40

      Pages: 399-404

    • Related Report
      2004 Annual Research Report
  • [Journal Article] A device of the isolation of epithelial stem like cells from rat liver.2004

    • Author(s)
      Kimitaka Kogure
    • Journal Title

      Gut (Supplement to 12th UEGW) 53

      Pages: 92-93

    • Related Report
      2004 Annual Research Report
  • [Journal Article] The right side border of the caudate lobe.2004

    • Author(s)
      Kimitaka Kogure
    • Journal Title

      Journal of Gastrointestinal Surgery (Abstract of 19th WCISDS) 8(7)

      Pages: 264-265

    • Related Report
      2004 Annual Research Report
  • [Journal Article] A device of the separation of the rat liver sinusoidal endothelial cells and the culture in the three-dimensional matrix.2003

    • Author(s)
      Kimitaka Kogure
    • Journal Title

      Abstracts of 11th Congress of the European Society for Organ Transplantation

      Pages: 79-79

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Long-term survival after hepatectomy for large metastatic breast cancer : a case report.2003

    • Author(s)
      Kimitaka Kogure
    • Journal Title

      Hepato-Gastroenteroloy 50

      Pages: 827-829

    • Related Report
      2004 Annual Research Report
  • [Publications] Kimitaka Kogure: "A device of the separation of the rat liver sinusoidal endotheleal cells and the culture in the three-dimensional matrix"Abstract of 11th Congress of the European Society for Organ Transplantation. Abstracts. 79-79 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Kimitaka Kogure: "Long-term survival after hepatectomy for large metastatic breast cancer: a case report."Hepato-Gastroenteroloy. 50. 827-829 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Kimitaka Kogure: "Re-proposal for Hjortsjo's segmental anatomy on the anterior segment in human liver"Archives of Surgery. 137. 1118-1124 (2002)

    • Related Report
      2003 Annual Research Report
  • [Publications] Ichikawa T: "Transforming growth factor beta and activin tonically inhibit DNA synthesis in the rat liver."Hepatology. 34(5). 918-925 (2001)

    • Related Report
      2003 Annual Research Report
  • [Publications] Fumio Arisawa: "Snowboarding splenic injury : four case reports."Injury. 33(2). 173-177 (2002)

    • Related Report
      2003 Annual Research Report
  • [Publications] 小暮公孝: "特集-人工肝臓研究-最近の進歩 III.幹細胞の培養 3.肝幹(様)細胞の培養"外科. 63(5). 571-580 (2001)

    • Related Report
      2003 Annual Research Report
  • [Publications] Kimitaka Kogure: "The role of activin and transforming growth factor-b in the regulation of organ mass in the rat liver."Hepatology. 31. 916-921 (2000)

    • Related Report
      2003 Annual Research Report
  • [Publications] Kimitaka Kogure: "Relation among portal segmentation, proper hepatic vein, and external notch of the caudate lobe in the human liver."Annals of Surgery. 231(2). 223-228 (2000)

    • Related Report
      2003 Annual Research Report
  • [Publications] Ishizaki M: "Hepatic arterial infusion chemotherapy for liver metastasis"The Kitakanto Medical Journal. 50(2). 111-115 (2000)

    • Related Report
      2003 Annual Research Report
  • [Publications] Kori T: "Sonographic features of acute colonic diverticulitis : the "Dome sign""Journal of Clinical Ultrasopund. 28(7). 340-346 (2000)

    • Related Report
      2003 Annual Research Report
  • [Publications] Kimitaka Kogure: "Evaluation of serum uric acid changes in different forms of hepatic vascular inflow occlusion in human liver surgeries"Life Science. 64(5). 305-313 (1999)

    • Related Report
      2003 Annual Research Report
  • [Publications] Kimitaka Kogure: "A comparative study of the anatomy of rat and human livers"Journal of Hepatobiliary Pancreatic Surgeries. 6. 171-175 (1999)

    • Related Report
      2003 Annual Research Report

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Published: 2003-04-01   Modified: 2016-04-21  

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