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Involvement of the translation machinery in the improvement of anemia in myelodysplastic syndromes by Aza-dC

Research Project

Project/Area Number 18K08357
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 54010:Hematology and medical oncology-related
Research InstitutionHiroshima University

Principal Investigator

Nagamachi Akiko  広島大学, 原爆放射線医科学研究所, 助教 (20585153)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords骨髄異形成症候群 / アザシチジン / 赤血球分化 / 貧血
Outline of Final Research Achievements

Accumulating evidence has demonstrated successful epigenetic therapy by targeting DNA demethylation with Aza/Aza-dC in MDS. However, the mechanism by which Aza/Aza-dC induces Hb synthesis is still largely unknown. To identify the direct targets of Aza-dC, we applied whole genome methylation and transcriptome analysis to K562 cells, in which Hb synthesis was significantly enhanced. This identified that a translational regulator, eEF1A2 was greatly induced by Aza-dC, coupled with significant DNA demethylation of the gene promoter. BMT assay using eEF1A2-deficient mice and ATAC-seq analysis, which identifies genome wide open chromatin regions revealed that the related eEF1A1 gene mainly contributes to hematopoiesis. These data indicated that the ectopic expression of eEF1A2 is a mechanism through which Aza-dC improves the anemia of MDS patients.

Academic Significance and Societal Importance of the Research Achievements

本研究は複雑なエピゲノム変動を伴うMDS細胞を用いた臨床側からのアプローチではなく、K562細胞株というシンプルな実験系で赤血球分化に標的を絞ったアプローチであり、得られた翻訳効率の関与という新しい知見と本研究での解析結果は、Azaの作用機序への理解をさらに進めるものであると考えられる。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (9 results)

All 2021 2020 2019 2018

All Journal Article (5 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 5 results,  Open Access: 5 results) Presentation (4 results)

  • [Journal Article] UTX maintains functional integrity of murine hematopoietic system by globally regulating aging-associated genes.2021

    • Author(s)
      Sera Y; Nakata Y; Ueda T; Yamasaki N; Koide S; Kobayashi H; Ikeda KI; Kobatake K; Iwasaki M; Oda H; Wolff L; Kanai A; Nagamachi A; Inaba T; Sotomaru Y; Ichinohe T; Koizumi M; Miyakawa Y; Honda ZI; Iwama A; Suda T; Takubo K; Honda H
    • Journal Title

      Blood.

      Volume: 137 Issue: 7 Pages: 908-922

    • DOI

      10.1182/blood.2019001044

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Multi-organ failure with abnormal receptor metabolism in mice mimicking Samd9/9L syndromes2021

    • Author(s)
      Nagamachi A, Kanai A, Nakamura M, Okuda H, Yokoyama A, Shinriki S, Matsui H, Inaba T.
    • Journal Title

      J Clin Invest

      Volume: 131 Issue: 4 Pages: 1-16

    • DOI

      10.1172/jci140147

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Revertant somatic mosaicism as a cause of cancer2021

    • Author(s)
      Inaba Toshiya、Nagamachi Akiko
    • Journal Title

      Cancer Science

      Volume: 112 Issue: 4 Pages: 1383-1389

    • DOI

      10.1111/cas.14852

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Association of aberrant ASNS imprinting with asparaginase sensitivity and chromosomal abnormality in childhood BCP-ALL2020

    • Author(s)
      Atsushi Watanabe, Kunio Miyake, Jessica Nordlund, Ann-Christine Syvanen, Louise van der Weyden, Hiroaki Honda, Norimasa Yamasaki, Akiko Nagamachi, Toshiya Inaba, Tomokatsu Ikawa, Kevin Y Urayama, Nobutaka Kiyokawa, Akira Ohara, Shunsuke Kimura, Yasuo Kubota, Junko Takita, Hiroaki Goto, Kimiyoshi Sakaguchi, et al.
    • Journal Title

      Blood

      Volume: 136 Issue: 20 Pages: 2319-2333

    • DOI

      10.1182/blood.2019004090

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Effects of Radiation on Blood Pressure and Body Weight in the Spontaneously Hypertensive Rat Model. Are Radiation Effects on Blood Pressure Affected by Genetic Background?2020

    • Author(s)
      105.Takahashi N, Misumi M, Niwa Y, Murakami H, Ohishi W, Inaba T, Nagamachi A, Tanaka S, Iii IBT, Suzuki G.
    • Journal Title

      Radiat Res.

      Volume: in press Issue: 6 Pages: 552-552

    • DOI

      10.1667/rr15536.1

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Abnormal endocytosis due to a Samd9L mutation causes bone marrow/multi-organ failure in mice mimicking MIRAGE syndrome2020

    • Author(s)
      長町安希子
    • Organizer
      第79回日本癌学会学術総会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Abnormal endocytosis due to a Samd9L mutation causes bone marrow/multi-organ failure in mice mimicking MIRAGE syndrome2020

    • Author(s)
      長町安希子
    • Organizer
      第82回日本血液学会学術総会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Regulation of receptor internalization by Samd9/Samd9L and their mutants2019

    • Author(s)
      Akiko Nagamachi
    • Organizer
      第81回日本血液学会学術集会
    • Related Report
      2019 Research-status Report
  • [Presentation] The role of Samd9 and Samd9L in the early endocytotic pathway2018

    • Author(s)
      長町安希子
    • Organizer
      第80回日本血液学会学術総会
    • Related Report
      2018 Research-status Report

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Published: 2018-04-23   Modified: 2022-01-27  

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