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Analyses of biological roles and significance of nuclear paraspeckles, formed by LLPS, liquid-liquid phase separation

Research Project

Project/Area Number 22K19539
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 54:Internal medicine of the bio-information integration and related fields
Research InstitutionThe University of Tokyo

Principal Investigator

KITAMURA TOSHIO  東京大学, 大学院薬学系研究科(薬学部), 名誉教授 (20282527)

Co-Investigator(Kenkyū-buntansha) 合山 進  東京大学, 大学院新領域創成科学研究科, 教授 (80431849)
Project Period (FY) 2022-06-30 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2023: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2022: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Keywordsエピジェネティクス / ASXL1 / 炎症 / 蛋白質分解 / シグナル伝達 / パラスペックル / ストレス応答
Outline of Research at the Start

パラスペックルは、染色体近傍に存在し転写やスプライシングに関与し、感染/低酸素などのストレス下で数が増加し、ストレス応答や細胞分化につながることが知られているが、機能面の詳細は不明である。申請者らは、エピジェネティクス因子ASXL1がパラスペックル形成に重要な役割を担っていることを見出した。本研究では、ストレス応答におけるASXL1とパラスペックルが果たす役割を調べ、パラスペックル機能の統合的解明を目指す。

Outline of Final Research Achievements

The epigenetics factor ASXL1, whose C-terminal portion is deleted by cellular stresses such as infection, plays an integral role in regulating cellular stress responses through alteration of the nuclear transcriptional program and activation of cytoplasmic signaling pathways. In contrast, similar C-terminal deleted molecules are expressed by ASXL1 mutations identified in clonal hematopoiesis, a cause of a variety of diseases, and hematopoietic tumors. This indicates that prolonged inflammation may be a risk factor for various diseases.

Academic Significance and Societal Importance of the Research Achievements

超高齢社会の日本では、2025年に65歳以上の人口が30%を超える。約10年前に65歳以上の高齢者の10%においてDNMT3A、TET2、ASXL1などに白血病関連遺伝子変異を一つ有するクローン性造血(CHIP)が存在することが報告された。CHIPを有する人では、造血器腫瘍だけではなく心筋梗塞、脳梗塞、糖尿病、固形癌、骨粗鬆症、慢性関節リウマチなど多くの疾患のリスクが高まることが注目されている。
変異型ASXL1を有するクローン性造血マウスモデルを研究する本研究はCHから疾患の発症原因を明らかにするという点で学術的にも重要であるが同時に超高齢社会である我が国において社会的にも極めて重要である。

Report

(2 results)
  • 2023 Final Research Report ( PDF )
  • 2022 Research-status Report
  • Research Products

    (21 results)

All 2023 2022

All Journal Article (8 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 8 results,  Open Access: 8 results) Presentation (13 results) (of which Int'l Joint Research: 4 results,  Invited: 4 results)

  • [Journal Article] CHIP‐associated mutant ASXL1 in blood cells promotes solid tumor progression2022

    • Author(s)
      Liu Xiaoxiao、Sato Naru、Shimosato Yuko、Wang Teh‐Wei、Denda Tamami、Chang Yu‐Hsuan、Yabushita Tomohiro、Fujino Takeshi、Asada Shuhei、Tanaka Yosuke、Fukuyama Tomofusa、Enomoto Yutaka、Ota Yasunori、Sakamoto Takeharu、Kitamura Toshio、Goyama Susumu
    • Journal Title

      Cancer Science

      Volume: 113 Issue: 4 Pages: 1182-1194

    • DOI

      10.1111/cas.15294

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [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 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Multi-omics analysis defines highly refractory RAS burdened immature subgroup of infant acute lymphoblastic leukemia2022

    • Author(s)
      Tomoya Isobe, Masatoshi Takagi, Aiko Sato-Otsubo, et al. (57人中28番目)
    • Journal Title

      Nature Communications

      Volume: 13 Issue: 1 Pages: 4501-4501

    • DOI

      10.1038/s41467-022-32266-4

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Mechanisms involved in hematopoietic stem cell aging2022

    • Author(s)
      Fujino Takeshi、Asada Shuhei、Goyama Susumu、Kitamura Toshio
    • Journal Title

      Cellular and Molecular Life Sciences

      Volume: 79 Issue: 9 Pages: 473-473

    • DOI

      10.1007/s00018-022-04356-5

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] UBC9 inhibits myeloid differentiation in collaboration with AML1-MTG82022

    • Author(s)
      Fukuyama Tomofusa、Kitamura Toshio、Kozu Tomoko
    • Journal Title

      International Journal of Hematology

      Volume: 115 Issue: 5 Pages: 686-693

    • DOI

      10.1007/s12185-022-03303-1

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] RUNX1 Inhibition Using Lipid Nanoparticle-Mediated Silencing RNA Delivery as an Effective Treatment for Acute Leukemias2022

    • Author(s)
      Iida Kohei、Tsuchiya Akiho、Tamura Moe、Yamamoto Keita、Kawata Shigehisa、Ishihara-Sugano Mitsuko、Kato Motohiro、Kitamura Toshio、Goyama Susumu
    • Journal Title

      Experimental Hematology

      Volume: 112-113 Pages: 1-8

    • DOI

      10.1016/j.exphem.2022.05.001

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] IMPDH inhibition activates TLR‐VCAM1 pathway and suppresses the development of MLL‐fusion leukemia2022

    • Author(s)
      Liu Xiaoxiao、Sato Naru、Yabushita Tomohiro、Li Jingmei、Jia Yuhan、Tamura Moe、Asada Shuhei、 Fujino Takeshi、Fukushima Tsuyoshi、Yonezawa Taishi、Tanaka Yosuke、et al. O'Brien Eric、 Mizukawa Benjamin、Mulloy James C、Sugiura Yuki、Takizawa Hitoshi、Shibata Takuma、Miyake Kensuke、Kitamura Toshio、Goyama Susumu
    • Journal Title

      EMBO Molecular Medicine

      Volume: 15 Issue: 1

    • DOI

      10.15252/emmm.202115631

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Eliminating chronic myeloid leukemia stem cells by IRAK1/4 inhibitors2022

    • Author(s)
      Tanaka Yosuke....Goyama Susumu、Komatsu Norio、Takaku Tomoiku、Kitamura Toshio
    • Journal Title

      Nature Communications

      Volume: 13 Issue: 1 Pages: 271-271

    • DOI

      10.1038/s41467-021-27928-8

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 骨髄異形成症候群(MDS)細胞は miRNA を骨髄ニッチに送り込むことによって正常造血を抑制する:MDS における正常造血抑制機序の一例2023

    • Author(s)
      北村 俊雄
    • Organizer
      第7回日本骨免疫学会冬季学術集会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Clonal hematopoiesis, inflammation and cardiovascular diseases2023

    • Author(s)
      Toshio Kitamura
    • Organizer
      2023 Normal/Malignant Hematopoiesis and Novel Therapies for Hematologic Malignancies Symposium
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] MECOM 症候群で認められる変異は、MECOM の転写活性化能及び造腫瘍性を喪失さ せる2023

    • Author(s)
      飯田孝平、山本圭太 、浅田修平 、北村俊雄 、合山進
    • Organizer
      第27回造血器腫瘍研究会
    • Related Report
      2022 Research-status Report
  • [Presentation] Identification of tumor regulators in myeloid neoplasms using in vivo CRISPR-Cas9 screening2023

    • Author(s)
      Yu-Hsuan Chang, Takeshi Fujino, Toshio Kitamura, Susumu Goyama
    • Organizer
      第27回造血器腫瘍研究会
    • Related Report
      2022 Research-status Report
  • [Presentation] CRISPR-dCas9 activation全ゲノムスクリーニング法による骨髄系腫瘍に対するDecitabineの作用機序の解明2023

    • Author(s)
      藪下 知宏、知念 拓実、西山 敦哉、南谷 泰仁、中西 真、北川 大樹、北村 俊雄、合山 進
    • Organizer
      第40 回染色体ワークショップ、第21回核ダイナミクス研究会
    • Related Report
      2022 Research-status Report
  • [Presentation] A novel G0 marker identifies leukemic stem cells of CML which could be targeted by PD1/PDL1 antibodies or an IRAK2022

    • Author(s)
      Toshio Kitamura
    • Organizer
      24th Annual John Goldman Conference on Chronic Myeloid Leukemia: Biology and Therapy
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] クローン性造血と造血器腫瘍2022

    • Author(s)
      北村 俊雄
    • Organizer
      第22回日本抗加齢医学会総会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] クローン性造血と動脈硬化の関係性2022

    • Author(s)
      北村 俊雄
    • Organizer
      第70回日本心臓病学会学術集会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] ASXL1によるパラスペックル制御と白血病2022

    • Author(s)
      山本圭太、合山進、北村俊雄
    • Organizer
      第81回日本癌学会学術総会
    • Related Report
      2022 Research-status Report
  • [Presentation] In vivo CRISPR/Cas9ライブラリスクリーニングにより明らかとなった 急性骨髄性白血病におけるAtp2a2の腫瘍抑制因子としての役割2022

    • Author(s)
      志村瑠香、北村俊雄、合山進
    • Organizer
      第81回日本癌学会学術総会
    • Related Report
      2022 Research-status Report
  • [Presentation] Decitabine induces excessive DNA-DNMT1 crosslinks and perturbs faithful mitosis of myeloid tumors2022

    • Author(s)
      Tomohiro Yabushita, Shuhei Asada, Keita Yamamoto, Naru Sato, Yutaka Enomoto, Yosuke Tanaka, Tomofusa Fukuyama, Atsuya Nishiyama, Makoto Nakanishi, Toshio Kitamura, Susumu Goyama
    • Organizer
      The 84rd Annual Meeting of JSH
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] MECOM症候群で認められる変異は、MECOMの転写活性化能及び造腫瘍性を喪失させる2022

    • Author(s)
      飯田孝平、山本圭太、浅田修平、北村俊雄、合山進
    • Organizer
      第84回日本血液学会
    • Related Report
      2022 Research-status Report
  • [Presentation] Mitotic Perturbation Is a Key Mechanism of Action of Decitabine in Myeloid Tumor Treatment2022

    • Author(s)
      Tomohiro Yabushita, Takumi Chinen, Atsuya Nishiyama, Shuhei Asada, Keita Yamamoto, Naru Sato, Yutaka Enomoto, osuke Tanaka, Keiko Katoh, Kaori Saitoh, Takamasa Ishikawa, Hitoshi Sato, Tomoyoshi Soga, Yasuhito Nannya, Makoto Nakanishi, Daiju Kitagawa, Toshio Kitamura, Susumu Goyama
    • Organizer
      64th American Society of Hematology (ASH) Annual Meeting and Exposition New Orleans
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research

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Published: 2022-07-05   Modified: 2025-01-30  

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