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転写調節による造血分化制御

Research Project

Project/Area Number 10181102
Research Category

Grant-in-Aid for Scientific Research on Priority Areas (A)

Allocation TypeSingle-year Grants
Review Section Biological Sciences
Research InstitutionOsaka University

Principal Investigator

仲野 徹  大阪大学, 微生物病研究所, 教授 (00172370)

Co-Investigator(Kenkyū-buntansha) 田中 信之  日本医科大学, 老人病研究所, 教授 (80222115)
平井 久丸  東京大学, 医学部・附属病院, 助教授 (90181130)
山本 雅之  筑波大学, TARAセンター, 教授 (50166823)
五十嵐 和彦  広島大学, 医学部, 教授 (00250738)
小守 寿文 (小守 壽文)  大阪大学, 医学研究科, 助手 (00252677)
北村 幸彦  大阪大学, 医学部, 教授 (70028520)
Project Period (FY) 1998 – 2001
Project Status Completed (Fiscal Year 2001)
Budget Amount *help
¥196,100,000 (Direct Cost: ¥196,100,000)
Fiscal Year 2001: ¥50,900,000 (Direct Cost: ¥50,900,000)
Fiscal Year 2000: ¥49,800,000 (Direct Cost: ¥49,800,000)
Fiscal Year 1999: ¥47,700,000 (Direct Cost: ¥47,700,000)
Fiscal Year 1998: ¥47,700,000 (Direct Cost: ¥47,700,000)
Keywords血液細胞 / 細胞分化 / 転写因子 / 赤血球 / マスト細胞 / T細胞 / 幹細胞 / 造血幹細胞 / 骨髄形成 / 遺伝子ターゲティング / GATA転写因子 / アポトーシス / 白血球 / 白血病
Research Abstract

マウス胚性幹細胞から血液細胞への分化誘導法と、テトラサイクリンによるコンデイショナル遺伝子発現系を組み合わせて、GATA-2の機能解析をおこなった。その結果、GATA-2は未分化な造血前駆細胞の増殖を亢進させること、また赤血球・巨核球への分化を促進することがあきらかになった。また、GATA-1の機能ドメインを解析するために、GATA-1ノックダウンマウスの致死性をGATA-1遺伝子の発現制御領域制御下に種々のGATA-1変異体を発現するトランスジェニックマウスにより相補する実験をおこなった。その結果、Cフィンガー,Nフィンガーは両方とも個体レベルでのGATA-1機能に必須であることがあきらかになった。
mi遺伝子座がコードするbasic-helix-loop-helix leucine zipper型転写因子(MITF)はbasic domainの1アミノ酸の異常では抑制性の機能をもつのに対し、大半のアミノ酸を欠損することであらゆる機能を失った。また、MITFと結合するタンパク質としてzinc finger domainをもつMAZRを単離した。MAZRはマスト細胞で高発現しているプロテアーゼ遺伝子の転写活性をMITFと相乗的に高めていた。また、骨芽細胞分化、破骨細胞分化、骨形成におけるCbfa1の機能およびB細胞分化におけるBach1の機能を明らかにした。
AML1の成体における機能を明らかにするため、AML1のコンディショナル・ノックアウトマウスを作製し、T細胞特異的AML1欠損マウスおよびB細胞特異的AML1欠損マウスの解析を行った。T細胞特異的AML1欠損マウスは著しい胸腺低形成を示し、CD4,8陰性(DN)分画内ではCD25陽性CD44陰性(DN3)分画に細胞が蓄積し、それ以降の分化が抑制されていた。また、B細胞特異的AML1欠損マウスにおいてもB細胞の分化障害を認めた。
以上のように、種々の血液細胞系列における転写因子の機能を明らかにすることができた。

Report

(4 results)
  • 2001 Annual Research Report
  • 2000 Annual Research Report
  • 1999 Annual Research Report
  • 1998 Annual Research Report
  • Research Products

    (25 results)

All Other

All Publications (25 results)

  • [Publications] Suzuki A, (13), Nakano T(corresponding author), Mak T W: "T-cell specific loss of PTEN leads to defects in central and peripheral tolerance"Immunity. 14. 523-534 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Iwai N, Kitajima K, Sakai K, Kimura T, Nakano T: "Alteration of cell adhesion and cell cycle properties of ES cells by an inducible dominant interfering Myb mutant"Oncogene. 20. 1425-1434 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Shimizu R, Takahashi S, Ohneda K, Engel JD, Yamamoto M: "In vivo requirements for GATA-1 functional domain during primitive and definitive erythropoiesis"EMBO J. 20. 5250-5260 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Shimizu K, Chiba S, Saito T, (2), Hamada Y, Hirai H: "Integrity of intracellular domain of Notch ligand is indispensable for cleavage required for release of Notch2 intracellular domain"EMBO J. 21. 294-302 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Liu W, (4) Liu Y, Himeno M, Narai S, Yamaguchi A, Komori T: "Overexpression of Cbfa1 in osteoblasts inhibits osteoblast maturation and causes osteopenia with multiple fractures"J Cell Biol. 155. 157-166 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Morii E, (3), Sakuma T, Nomura S, Esko JD, Handa H, Kitamura Y: "Inhibitory effect of MITF encoded by the mutant mi allele on GABP-mediated transcript expression in mouse mast cells"BLOOD. 97. 3032-3039 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 仲野 徹: "胚性幹細胞(ES細胞)の分化とサイトカイン 造血サイトカイン-研究の進歩と臨床応用-"元吉和夫. 64-73 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] T.Era,Y.Takagi,T.Takahashi,J.C.Bories,T.Nakano: "Characterization of hematopoietic lineage specific gene expression by ES cell in vitro differentiation induction system"Blood. 95. 870-878 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Oda,E.,Ohki,R.,Murasawa,H.,Nemoto,J.,Shibue,T.,Tanaka,N.: "Noxa,a BH3-only member of the bcl-2 family and candidate mediator of p53-induced apoptosis."Science. 288. 1053-1058 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Kurokawa M,Mitani K,Yamagata T,Nishida E,Yazaki Y,Hirai H: "The Evi-1 oncoprotein inhibits c-Jun N-terminal kinase and prevents stress-induced cell death."EMBO J. 19. 2958-2968 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] C.Ueta,M.Iwamoto,N.Kanatani,K.Takada,K.Kurisu,T.Komori,: "Skeletal malformations caused by overexpression of Cbfa1 or its dominant negative form in chondrocytes."J Cell Biol. (in press).

    • Related Report
      2000 Annual Research Report
  • [Publications] Katsuoka,F.,Motohashi,H.,Onodera,K.,Yamamoto,M.: "One enhancer mediates mafK transcriptional activation in both hematopoietic and cardiac muscle cells."EMBO J. 19. 1335-1345 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Kobayashi,A.,Yamagiwa,H.,Hoshino,H.,Igarashi,K.: "A combinatorial code for gene expression generated by transcription factor Bach2 and MAZR through BTB/POZ domain."Mol Cell Biol. 20. 1733-1746 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] N. Motoyama, T. Kimura, T. Takahashi, T. Watanabe, T. Nakano: "bcl-x Prevents Apoptotic Cell Death of Both Primitive and Definitive Erythrocytes at the End of Maturation"J Exp Med. 189. 1691-1698 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] T. Era, T. Takahashi, Y. Takagi, T. Nakano: "Characterization of hematopoietic lineage specific gene expression by ES cell in vitro differentiation induction system"BLOOD. 95. 870-878 (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] S. Nishimura, S. Takahashi, T. Kuroha, T. Nagasawa, M. Yamamoto: "A GATA box in the GATA-1 gene hematopoietic enhancer is a critical element in the network of GATA factors and sites that regulate this gene"Mol Cell Biol. 20. 713-723 (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] A. Ito, E. Morii, D. K. Kim, T. Jippo T, K. Maeyama K, H. Nojima H, Y. Kitamura: "Inhibitory effect of the transcription factor encoded by the mi mutant allele in cultured mast cells of mice"BLOOD. 93. 1189-1196 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] K. Maki, K. Mitani, T. Yamagata, Y. Kanda, Y Yazaki, H. Hirai: "Transcriptional inhibition of p53 by the MLL/MEN chimeric protein found in myeloid leukemia"BLOOD. 93. 3216-3224 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] H. Enomoto, M. Enomoto-Iwamoto, Y. Kitamura, T. Kishimoto, T. Komori: "Cbfa1 is a positive regulatory factor in chondrocyte maturation"J. Biol. Chem. (in press). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] Kurokawa M,Mitani K,Hirai H,et al: "The oncoprotein Evi-1 represses TGF-beta signalling by inhibiting Smad3" Nature. 394. 92-96 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Hirota S,Isozaki K,Kitamura Y,et al: "Gain-of-function mutations of c-kit in human gastrointestinal stromal tumors" Science. 279. 577-580 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Suwabe N,Takahashi S,Nakano T.et al: "GATA-1 regulates growth and differentiation of definitive erythroid lineage cells during in vitro ES cell differentiation" Blood. 92. 4108-4118 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Takahashi S,Komeno T,Yamamoto M.et al: "Role of GATA-1 in proliferation and differentiation of definitive erythroid and megakaryocytic cells in vivo" Blood. 92. 434-442 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Yagi H,Deguchi K,Komori T.et al: "Growth disturbance in fetal liver hematopoiesis of Mll-mutant mice" Blood. 92. 108-117 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Tanaka N,Sato M,Taniguchi T.et al: "Type l interferons are essential mediators of apoptotic death in virally infected cells" Genes Cells. 3. 29-37 (1998)

    • Related Report
      1998 Annual Research Report

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Published: 1998-04-01   Modified: 2018-03-28  

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