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Role of KAISO and P120 complex in lymphoid leukemia

Research Project

Project/Area Number 19K23921
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0901:Oncology and related fields
Research InstitutionSapporo Medical University

Principal Investigator

Horiguchi Hiroto  札幌医科大学, 医学部, 研究員 (70634674)

Project Period (FY) 2019-08-30 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
KeywordsKAISO / リンパ性白血病 / 急性リンパ性白血病 / リンパ系腫瘍 / P120
Outline of Research at the Start

血液腫瘍に対する薬物治療は日々進歩をとげているが、再発難治性リンパ性腫瘍に対する治療成績は未だ不十分である。KAISOは、ジンクフィンガーを有する転写因子であり、メチル化CpG配列と非メチル化配列の2つの特異的な配列に結合することで2峰性に働くと想定されている。申請者は、造血細胞においては、KAISO-δカテニン複合体はRHOHと結合した後に核内移行することを突き止め、RHOHをノックアウトするとKAISOの核内移行が抑制され、リンパ腫が自然発症することを突き止めた。本研究ではヒトのリンパ性腫瘍におけるKAISOの意義を明らかとし、KAISO複合体を標的とした新規治療の確立を目指すものである。

Outline of Final Research Achievements

We purchased acute leukemia cell lines (BALL-1, HAL-01, NALM-6, TALL, MOLT-4, and Jurkat). They were cultured and their RNAs were extracted by using TRIzol.
Reverse transcription quantitative polymerase chain reaction (RT-qPCR) revealed that KAISO mRNAs of BALL-1 and HAL-01 were significantly decreased than normal B cell and KAISO mRNAs of TALL, MOLT-4, and Jurkat were significantly decreased than normal T cell. Moreover, Catenin delta-1 mRNAs of all B cell leukemia lines and T cell leukemia cell lines were significantly decreased than normal B cell and T cell, respectively.

Academic Significance and Societal Importance of the Research Achievements

急性リンパ性白血病におけるKAISO mRNAの発現は、多くの細胞株で正常B細胞、正常T細胞と比較し、優位に低下していることが明らかとなったが、その一部の細胞株では低下していなかった。一方で、KAISOの関連分子であるCatenin delta-1のmRNAの急性リンパ球性白血病株での発現は、正常のB細胞とT細胞と比較し、すべての白血病細胞株で有意に低下していた。このことは、KAISOやCatenin delta-1が治療の標的となりえることが、期待される。

Report

(3 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • Research Products

    (3 results)

All 2021 2020

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (2 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] Possible clinical outcomes using early enteral nutrition in individuals with allogeneic hematopoietic stem cell transplantation: A single-center retrospective study2021

    • Author(s)
      Satoshi Iyama, Hiroomi Tatsumi, Tsukasa Shiraishi, Shohei Kikuchi, Tsutomu Sato, Hirofumi Ohnishi, Shin-Ichi Yokota, Masayoshi Kobune
    • Journal Title

      Nutrition

      Volume: 83 Pages: 111093-111093

    • DOI

      10.1016/j.nut.2020.111093

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Presentation] CD34+ Positive Myelodysplastic Cells with Ring Sideroblasts or SF3B1 Mutation Produce High Erythroferrone and GDF152020

    • Author(s)
      Hiroto Horiguchi, Masayoshi Kobune, Kento Ono, Saori Shimoyama, Chisa Fujita, Akari Goto, Hiroshi Ikeda, Satoshi Iyama
    • Organizer
      62nd ASH Annual Meeting and Exposition
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Genomic Analysis of FLT3 Mutations in a Comprehensive NGS Multicenter Study of AML: HM-Screen-Japan 012020

    • Author(s)
      Kentaro Fukushima, SungGi Chi, and Hirohiko Shibayama et al.
    • Organizer
      62nd ASH Annual Meeting and Exposition
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research

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Published: 2019-09-03   Modified: 2022-01-27  

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