• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Molecular Mechanisms of Bone Marrow Disease in Langerhans cell histiocytosis (LCH)

Research Project

Project/Area Number 21K07813
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 52050:Embryonic medicine and pediatrics-related
Research InstitutionHirosaki University

Principal Investigator

Kudo Ko  弘前大学, 医学研究科, 准教授 (20455728)

Co-Investigator(Kenkyū-buntansha) 土岐 力  弘前大学, 医学研究科, 講師 (50195731)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2023: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2022: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords組織球症 / ランゲルハンス細胞組織球症 / BRAF遺伝子 / 微小残存病変 / 測定可能残存病変 / BRAFV600E変異 / BRAFV600E / 骨髄病変
Outline of Research at the Start

LCHにおいて、分子レベルの骨髄病変の臨床的意義が未解明である。我々は先行研究において、高感度遺伝子定量解析法により、LCH骨髄病変がBRAF V600E変異陽性例において高頻度に認められ、骨髄変異陽性細胞量は、臨床型および予後と相関が認めることを明らかにした。この結果より、BRAF V600E変異陽性例においては、骨髄がLCH病変の供給源であることが示唆された。以上より、LCH骨髄病変細胞の細胞起源および特性を明らかにし、新たな遺伝子異常の探索を行い、最終的にLCH骨髄病変の生存優位性の機序を解明するための研究を行う。

Outline of Final Research Achievements

Langerhans cell histiocytosis (LCH) has a systemic high-risk form of the disease. In addition, cases with involvement of risk organs such as bone marrow, liver, and spleen, termed risk organ-positive multisystem disease, have a poor response to therapy. We performed a retrospective genetic analysis of tumor-bone marrow pairs in pediatric LCH. We found that all patients with risk organ-positive LCH had BRAFV600E mutation-positive bone marrow disease at initial diagnosis, with a high mutation ratio, which correlated with age and prognosis.

Many of the characteristics of patients who were positive for bone marrow disease at initial presentation were consistent with those of clinically defined risk organ positive patients, suggesting that bone marrow disease positivity may be a new risk factor.

Academic Significance and Societal Importance of the Research Achievements

我々は、これまで存在は知られていたが意義が不明であった、LCHにおける骨髄における遺伝子変異陽性細胞は、新規の予後因子である可能性が高い、という臨床的意義を明らかにした。この結果を、各種学会で発表し論文報告した。多臓器型と呼ばれる全身性のLCHにおいては、骨髄に加えて末梢血での遺伝子変異の定量的解析が、白血病における微小残存病変のような疾患活動性や予後を推定する重要な予後因子である可能性が示された。この成果をもとに、現在進行中の日本小児がん研究グループによるLCHの前向き臨床試験で本研究の結果が追試、検証されている。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (16 results)

All 2024 2023 2022 2021 2020

All Journal Article (11 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 10 results,  Open Access: 3 results) Presentation (5 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Journal Article] Juvenile xanthogranuloma manifesting with LCH‐associated neurodegenerative disease‐like radiological findings2024

    • Author(s)
      Daifu Tomoo、Umeda Katsutsugu、Yokoyama Atsushi、Yoshida Takeshi、Saida Satoshi、Kato Itaru、Hiramatsu Hidefumi、Kudo Ko、Higuchi Yoshihisa、Takita Junko
    • Journal Title

      Pediatric Blood & Cancer

      Volume: NA Issue: 7

    • DOI

      10.1002/pbc.31043

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Detection of BRAF V600E mutation in radiological Langerhans cell histiocytosis-associated neurodegenerative disease using droplet digital PCR analysis.2023

    • Author(s)
      Shimizu S, Sakamoto K, Kudo K, Morimoto A, Shioda Y.
    • Journal Title

      Int J Hematol.

      Volume: 118 Issue: 1 Pages: 119-124

    • DOI

      10.1007/s12185-023-03588-w

    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Early chemotherapeutic intervention to avoid thyroidectomy in pediatric Langerhans cell histiocytosis with thyroid involvement accompanying tracheal stenosis: a report of two cases2023

    • Author(s)
      Aoyama S、Fukuoka K、Kubota H、Narita K、Kudo K、Mitani Y、Oshima K、Mori M、Arakawa Y、Ichimura K、Terui K、Tanami Y、Kawashima H、Nakazawa A、Niitsu T、Takahashi Y、Koh K
    • Journal Title

      International Journal of Hematology

      Volume: 119 Issue: 1 Pages: 99-103

    • DOI

      10.1007/s12185-023-03662-3

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Optimal timing of liver transplantation for liver cirrhosis caused by sclerosing cholangitis in a patient with Langerhans cell histiocytosis: a case report2023

    • Author(s)
      Watakabe Mai、Fukuoka Kohei、Ihara Yoshiyuki、Hara Tomoko、Kudo Ko、Tamura Megumi、Ichimura Kayoko、Tanami Yutaka、Kawashima Hiroshi、Iwama Itaru、Nakazawa Atsuko、Mizuta Koichi、Koh Katsuyoshi
    • Journal Title

      International Journal of Hematology

      Volume: 117 Issue: 5 Pages: 759-764

    • DOI

      10.1007/s12185-022-03500-y

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] BRAFV600E-positive cells as molecular markers of bone marrow disease in pediatric Langerhans cell histiocytosis.2022

    • Author(s)
      Ko Kudo, Tsutomu Toki, Rika Kanezaki, and Etsuro Ito
    • Journal Title

      Haematologica

      Volume: epub ahead Issue: 7 Pages: 000-000

    • DOI

      10.3324/haematol.2021.279857

    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Childhood acute myeloid leukemia with 5q deletion and HNRNPH1-MLLT10 fusion: the first case report2022

    • Author(s)
      Kudo Ko、Kubota Yasuo、Toki Tsutomu、Kanezaki Rika、Kobayashi Akie、Sato Tomohiko、Kamio Takuya、Sasaki Shinya、Shiba Norio、Tomizawa Daisuke、Adachi Souichi、Yoshida Kenichi、Ogawa Seishi、Seki Masafumi、Takita Junko、Ito Etsuro、Terui Kiminori
    • Journal Title

      Blood Advances

      Volume: 6 Issue: 10 Pages: 3162-3166

    • DOI

      10.1182/bloodadvances.2021006383

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Isolated Bone Recurrence of Medulloblastoma With MYCN Amplification and TP53 Loss: A Case Report2021

    • Author(s)
      Takahashi Yuka、Kudo Ko、Ogawa Kaoru、Sato Tomohiko、Kamio Takuya、Sasaki Shinya、Kobayashi Akie、Ito Tatsuya、Yamamoto Tatsuya、Asano Kenichiro、Ohkuma Hiroki、Kurose Akira、Ito Etsuro、Terui Kiminori
    • Journal Title

      Journal of Pediatric Hematology/Oncology

      Volume: 44 Issue: 2 Pages: e593-e596

    • DOI

      10.1097/mph.0000000000002234

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Epstein-Barr Virus-Negative Granulomatous Disease Due to SAP Deficiency.2021

    • Author(s)
      Karasawa T, Kudo K, Tanita K, Takahashi Y, Kanegane H, Terui K.
    • Journal Title

      J Clin Immunol.

      Volume: 41(6) Issue: 6 Pages: 1372-1375

    • DOI

      10.1007/s10875-021-01032-4

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Association of Multiple Gene Polymorphisms Including Homozygous NUDT15 R139C With Thiopurine Intolerance During the Treatment of Acute Lymphoblastic Leukemia2021

    • Author(s)
      Kudo Ko、Sato Tomohiko、Takahashi Yuka、Yuzawa Kentaro、Kobayashi Akie、Kamio Takuya、Sasaki Shinya、Shimada Jun、Otani Katsuki、Tusjimoto Shinichi、Kato Motohiro、Toki Tsutomu、Terui Kiminori、Ito Etsuro
    • Journal Title

      Journal of Pediatric Hematology/Oncology

      Volume: 43 Issue: 8 Pages: e1173-e1176

    • DOI

      10.1097/mph.0000000000002085

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Salvage therapy with 2-chlorodeoxyadenosine for refractory and relapsed pediatric Langerhans cell histiocytosis: an updated nationwide survey in Japan2021

    • Author(s)
      Taniguchi Maki、Sakamoto Kenichi、Shioda Yoko、Doi Takehiko、Kudo Ko、Fujino Hisanori、Kudo Kazuko、Morimoto Akira
    • Journal Title

      International Journal of Hematology

      Volume: 113 Issue: 3 Pages: 461-463

    • DOI

      10.1007/s12185-020-03073-8

    • Related Report
      2021 Research-status Report
  • [Journal Article] Correction: Reduced-intensity conditioning is effective for hematopoietic stem cell transplantation in young pediatric patients with Diamond-Blackfan anemia2020

    • Author(s)
      Koyamaishi Shun、Ogawa Seishi et al.
    • Journal Title

      Bone Marrow Transplantation

      Volume: 56 Issue: 5 Pages: 1218-1219

    • DOI

      10.1038/s41409-020-01076-x

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 小児ランゲルハンス細胞組織球症における骨髄血 BRAFV600E 陽性細胞の臨床的意義2022

    • Author(s)
      工藤 耕
    • Organizer
      日本小児血液がん学会
    • Related Report
      2022 Research-status Report
  • [Presentation] 小児のランゲルハンス細胞組織球症2021

    • Author(s)
      工藤 耕
    • Organizer
      第63回日本小児血液・がん学会学術集会 教育講演
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 小児のランゲルハンス細胞組織球症における骨髄血中BRAF V600E陽性細胞の意義について2021

    • Author(s)
      工藤 耕
    • Organizer
      第63回日本小児血液・がん学会学術集会
    • Related Report
      2021 Research-status Report
  • [Presentation] BRAFV600E-positive cells as molecular markers of bone marrow disease in pediatric Langerhans cell histiocytosis2021

    • Author(s)
      工藤 耕
    • Organizer
      第37回国際組織球症学会
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 小児ランゲルハンス組織球症の骨髄病変におけるBRAFV600E変異2021

    • Author(s)
      工藤 耕
    • Organizer
      第83回日本血液学会学術集会
    • Related Report
      2021 Research-status Report

URL: 

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

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi