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whole genome and multiomics analysis of hairy cell leukemia japansese variant

Research Project

Project/Area Number 21H02711
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 49030:Experimental pathology-related
Research InstitutionThe University of Tokyo

Principal Investigator

YOKOYAMA KAZUAKI  東京大学, 医科学研究所, 准教授 (00647498)

Co-Investigator(Kenkyū-buntansha) 井元 清哉  東京大学, 医科学研究所, 教授 (10345027)
木村 晋也  佐賀大学, 医学部, 教授 (80359794)
石井 敬人  東京慈恵会医科大学, 医学部, 助教 (90814294)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2023: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2022: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2021: ¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Keywords有毛細胞白血病 / 全ゲノム解析 / エンハンサー / 全ゲノム / マルチオミクス / オミクス解析
Outline of Research at the Start

本邦固有の希少がんである有毛細胞白血病(HCL)の日本型亜型HCLjvは、欧米型と異なり、変異等の分子病態や、標準治療も確立していない。そこで本研究では、予備知見に基づき、HCLjv例を集積して、全ゲノム-マルチオミクス情報基盤を構築し、それに基づき、1)診断、治療バイオマーカーを探索する事、2)日本発の遺伝学的疾患エビデンスを発信する事、3)それらに基づいた標的治療開発する事,の3点を狙う。

Outline of Final Research Achievements

In an effort to elucidate the molecular pathology and develop targeted therapies for Hairy Cell Leukemia-Japanese variant (HCLjv), a rare cancer unique to Japan, we conducted whole genome analyses in comparison with Western-type HCL (positive for BRAF.pV600E mutation). Our findings revealed novel structural abnormalities in the oncogene X in 20% of HCLjv cases, suggesting tumorigenesis driven by overexpression of X through hijacking of the strong Emu enhancer. The overexpression of X frequently coexisted with loss-of-function mutations in the tumor suppressor genes Y and Z. Further investigations using cell lines demonstrated that overexpression of X activates the PI3K/Akt pathway, while loss of Y induces activation of the NFkb2 pathway. Future studies will involve in vivo analysis of the oncogenic potential of X using floxed mice engineered to specifically assess the role of X in tumorigenesis.

Academic Significance and Societal Importance of the Research Achievements

我々は、現在標準治療のない、日本固有の希少がん、有毛細胞白血病日本型(HCLjv)について、その分子病態を解明と標的治療法の開発を目指して全ゲノム解析を行い、癌遺伝子X, がん抑制遺伝子Y,Zの変異を見出した。本研究により、癌遺伝子Xによる、腫瘍化のメカニズム解明と、それに基づく新しい治療法開発への道が開かれる事が期待される。

Report

(3 results)
  • 2023 Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • Research Products

    (9 results)

All 2023 2022 2021

All Journal Article (6 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (2 results) Book (1 results)

  • [Journal Article] Explainable AI for Estimating Pathogenicity of Genetic Variants Using Large-Scale Knowledge Graphs.2023

    • Author(s)
      Abe S, Tago S, Yokoyama K, Ogawa M, Takei T, Imoto S, Fuji M.
    • Journal Title

      Cancers (Basel)

      Volume: 15 Issue: 4 Pages: 1118-1118

    • DOI

      10.3390/cancers15041118

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] MDS cells impair osteolineage differentiation of MSCs via extracellular vesicles to suppress normal hematopoiesis.2022

    • Author(s)
      Hayashi Y, Inoue D, et al.
    • Journal Title

      Cell Reports

      Volume: VOLUME 39, ISSUE 6 Issue: 6 Pages: 110805-110805

    • DOI

      10.1016/j.celrep.2022.110805

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Anti-inflammatory effects of ruxolitinib on chronic neutrophilic leukemia harboring CSF3R-T618I mutation with bilateral renal abscesses.2022

    • Author(s)
      Sahara N, Yokoyama K, Matsunaga T, Kitahara S, Fujii T, Kobayashi S, Yusa N, Shimizu E, Imoto S, Tojo A, Ohno N.
    • Journal Title

      Leuk Res Rep.

      Volume: 18 Pages: 100348-100348

    • DOI

      10.1016/j.lrr.2022.100348

    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Journal Article] Repeated Lineage Switches in an Elderly Case of Refractory B-Cell Acute Lymphoblastic Leukemia With MLL Gene Amplification: A Case Report and Literature Review2022

    • Author(s)
      Takeda Reina、Yokoyama Kazuaki、Fukuyama Tomofusa、Kawamata Toyotaka、Ito Mika、Yusa Nozomi、Kasajima Rika、Shimizu Eigo、Ohno Nobuhiro、Uchimaru Kaoru、Yamaguchi Rui、Imoto Seiya、Miyano Satoru、Tojo Arinobu
    • Journal Title

      Frontiers in Oncology

      Volume: 12

    • DOI

      10.3389/fonc.2022.799982

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Role of Circulating Tumor DNA in Hematological Malignancy2021

    • Author(s)
      Ogawa Miho、Yokoyama Kazuaki、Imoto Seiya、Tojo Arinobu
    • Journal Title

      Cancers

      Volume: 13 Issue: 9 Pages: 2078-2078

    • DOI

      10.3390/cancers13092078

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Comprehensive molecular analysis of genomic profiles and PD-L1 expression in lung adenocarcinoma with a high-grade fetal adenocarcinoma component2021

    • Author(s)
      Masaki Suzuki, Rika Kasajima, Tomoyuki Yokose, Hiroyuki Ito, Eigo Shimizu, Seira Hatakeyama, Kazuaki Yokoyama, Rui Yamaguchi, Yoichi Furukawa, Satoru Miyano, Seiya Imoto, Emi Yoshioka, Kota Washimi, Yoichiro Okubo, Kae Kawachi, Shinya Sato, Yohei Miyagi
    • Journal Title

      Translational Lung Cancer Research

      Volume: 10 Issue: 3 Pages: 1292-1304

    • DOI

      10.21037/tlcr-20-1158

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Myeloid/Natural Killer (NK) Cell Precursor Acute Leukemia As a Novel Distinctive Leukemia Entity2021

    • Author(s)
      Akira Nishimura, Kazuaki Yokoyama, Masatoshi Takagi et al.
    • Organizer
      第83回日本血液学会総会 プレナリー セッション
    • Related Report
      2021 Annual Research Report
  • [Presentation] Unraveling heterogeneity of aged hematopoietic stem cells by single-cell RNA sequence analysis2021

    • Author(s)
      Shuhei Koide, Motohiko Oshima, Akira Nishiyama, Koichi Murakami, Yaeko-Nakajima Takagi, Naoki Itokawa, Nozomi Yusa, Kazuaki Yokoyama, Kiyoshi Yamaguchi, Yoichi Furukawa, Arinobu Tojo, Tomohiko Tamura, Atsushi Iwama.
    • Organizer
      第83回日本血液学会総会
    • Related Report
      2021 Annual Research Report
  • [Book] 令和3年度厚生労働省委託事業がんの全ゲノム解析に関する人材育成推進事業 テキスト4章2021

    • Author(s)
      横山和明 清水英悟
    • Publisher
      厚生労働省
    • Related Report
      2021 Annual Research Report

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Published: 2021-04-28   Modified: 2025-01-30  

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