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2008 Fiscal Year Final Research Report

Roles of Rho GTPases in pathogenesis of leukemia

Research Project

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Project/Area Number 19591105
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Hematology
Research InstitutionNagoya University

Principal Investigator

KATSUMI Akira  Nagoya University, 大学院・医学系・研究科, 特任講師 (80378025)

Co-Investigator(Kenkyū-buntansha) KAIBUCHI Kozo  名古屋大学, 大学院・医学系・研究科, 教授 (00169377)
Project Period (FY) 2007 – 2008
Keywords細胞接着 / RhoH, Rac / 急性骨髄性白血病
Research Abstract

成人急性骨髄性白血病(AML)90例の白血病細胞のRhoH発現量をTaqMan PCR法で定量した.RhoH発現はFAB分類、年齢、初診時白血球数、寛解導入率、染色体異常の有無に無関係であった.RhoH低発現群と高発現群に分けて予後を検討したところ、低発現群では有意に予後不良であった.また多変量解析にて、RhoH低発現は無病生存率において予後不良因子であった.COS7細胞にRhoHを過剰発現させた状態ではsmall GTPase Racが不活性化することが明らかになった.またRac-PAKの下流に存在するBadのS112のリン酸化を測定したところ、RhoH発現によりBad S112のリン酸化が抑制される事が明らかになった.

  • Research Products

    (5 results)

All 2008 Other

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

  • [Journal Article] Prognostic implication and biological roles of RhoH in acute myeloid leukaemia2008

    • Author(s)
      Iwasaki T, Katsumi A, Kiyoi H, Tanizaki R, Ishikawa Y, Ozeki K, Kobayashi M, Abe A, Matsushita T, Watanabe T, Amano M, Kojima T, Kaibuchi K, Naoe T.
    • Journal Title

      Eur J Haematol 81(6)

      Pages: 454-60

    • Peer Reviewed
  • [Journal Article] Retention But Significant Reduction of BCR-ABL Transcript in Hematopoietic Stem Cells in Chronic Myelogenous Leukemia After Imatinib Therapy2008

    • Author(s)
      Abe A, Minami Y, Hayakawa F, Kitamura K, Nomura Y, Murata M, Katsumi A, Kiyoi H, Jamieson H.M.C., Wang Y.J.J., Naoe T
    • Journal Title

      Int J Hematol 88(5)

      Pages: 471-5

    • Peer Reviewed
  • [Journal Article] Mutational analysis of SOS1 in acute myeloid leukemia2008

    • Author(s)
      Tanizaki R, Katsumi A, Kiyoi H, Kunishima S, Iwasaki T, Ishikawa Y, Kobayashi M, Abe A, Matsushita T, Watanabe T, Kojima T, Kaibuchi K, Kojima S, Naoe T
    • Journal Title

      Int J Hematol 88(4)

      Pages: 460-2

    • Peer Reviewed
  • [Presentation] Prognostic implication and biological roles of RhoH in acute myeloid leukemia2008

    • Author(s)
      Katsumi A, et.al
    • Organizer
      The 50^<th> ASH (American Society of Hematology) annual meeting and exposition
    • Place of Presentation
      San Francisco, CA
    • Year and Date
      20081206-09
  • [Remarks]

    • URL

      http://www.med.nagoya-u.ac.jp/hematology/Welcome.html

URL: 

Published: 2010-06-10   Modified: 2016-04-21  

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