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METTL23 mutation alters histone H3R17 methylation in normal-tension glaucoma

Research Project

Project/Area Number 20K18366
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 56060:Ophthalmology-related
Research Institution独立行政法人国立病院機構(東京医療センター臨床研究センター)

Principal Investigator

PAN YANG  独立行政法人国立病院機構(東京医療センター臨床研究センター), 分子細胞生物学研究部, 研究員 (20866389)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
KeywordsGenetic diseases / Mouse models / Ophthalmology / iPS cells / Normal-tension glaucoma / splicing / causative gene / Causative gene / Splicing / 正常眼圧緑内障 / 病因遺伝子 / 発症機序
Outline of Research at the Start

正常眼圧緑内障では、主要な発症リスク因子と治療のターゲットである眼圧亢進が顕著にみられないことが臨床課題となっており、原因遺伝子の同定と遺伝子検査、早期予防処置と治療が将来の重要な手段になると予想される。本研究では我々が同定した正常眼圧緑内障家系の新規原因遺伝子Xの野生型と変異型のタンパク質Xにういて、その生理機能を解析し、ノックインマウスを解析して、正常眼圧緑内障が惹起される分子メカニズムを明らかにすることを目的とする。この分子メカニズムの新知見に基づき、分子標的の探索を行い、新規治療法の開発をめざす。

Outline of Final Research Achievements

Normal-tension glaucoma (NTG) is a heterogeneous disease characterized by RGC death leading to cupping of the optic nerve head and visual field loss at normal IOP. The pathogenesis of NTG remains unclear. Here, we describe a single nucleotide mutation in exon 2 of the METTL23 gene identified in 3 generations of a Japanese family with NTG. This mutation caused mRNA aberrant splicing, which abolished normal protein production and altered subcellular localization. Mettl23-KI (-KO) mice developed a NTG like phenotype. METTL23 is a histone arginine methyltransferase expressed in murine and macaque RGCs. However, the novel mutation reduced METTL23 expression in RGCs of Mettl23-KI mice, which recapitulated both clinical and biological phenotypes. Moreover, our findings demonstrated that METTL23 catalyzed the dimethylation of H3R17 in the retina and was required for NF-κB-mediated TNF-α and IL-1β feedback. These findings suggest an etiologic role of METTL23 in NTG.

Academic Significance and Societal Importance of the Research Achievements

日本では開放隅角緑内障の多くが正常眼圧緑内障(NTG)であることが知られています。本研究は顕性NTG家系について全エクソーム解析を行い、新規原因遺伝子METTL23にc.A83G変異を発見しました。ゲノムDNAやヒストンのメチル化は遺伝子発現を制御しており、これを総称 してエピジェネティックスと呼んでいます。エピジェネティックスと緑内障との関連は長い 間推測されてきましたが、今回世界初となるエピジェネティックスの異常による正常眼圧緑内障の発症機序の解明に成功しました。今回の発見によって、エピジェネティックスと緑内障の関係がさらに明らかにされることが期待されます。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (12 results)

All 2022 2021 2020 Other

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

  • [Journal Article] METTL23 mutation alters histone H3R17 methylation in normal-tension glaucoma2022

    • Author(s)
      Pan Yang、Suga Akiko、Kimura Itaru、Kimura Chojiro、Minegishi Yuriko、Nakayama Mao、Yoshitake Kazutoshi、Iejima Daisuke、Minematsu Naoko、Yamamoto Megumi、Mabuchi Fumihiko、Takamoto Mitsuko、Shiga Yukihiro、Araie Makoto、Kashiwagi Kenji、Aihara Makoto、Nakazawa Toru、Iwata Takeshi
    • Journal Title

      Journal of Clinical Investigation

      Volume: 132 Issue: 21

    • DOI

      10.1172/jci153589

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Exploring the contribution of ARMS2 and HTRA1 genetic risk factors in age-related macular degeneration2022

    • Author(s)
      Pan Yang、Fu Yingbin、Baird Paul N.、Guymer Robyn H.、Das Taraprasad、Iwata Takeshi
    • Journal Title

      Progress in Retinal and Eye Research

      Volume: online ahead of print Pages: 101159-101159

    • DOI

      10.1016/j.preteyeres.2022.101159

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] HTRA1 Regulates Subclinical Inflammation and Activates Proangiogenic Response in the Retina and Choroid2022

    • Author(s)
      Ahamed Waseem、Yu Richard Ming Chuan、Pan Yang、Iwata Takeshi、Barathi Veluchamy Amutha、Wey Yeo Sia、Tun Sai Bo Bo、Qiu Beiying、Tan Alison、Wang Xiaomeng、Cheung Chui Ming Gemmy、Wong Tien Yin、Yanagi Yasuo
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 23 Issue: 18 Pages: 10206-10206

    • DOI

      10.3390/ijms231810206

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Binding of Gtf2i-β/δ transcription factors to the ARMS2 gene leads to increased circulating HTRA1 in AMD patients and in?vitro2021

    • Author(s)
      Pan Yang、Iejima Daisuke、Nakayama Mao、Suga Akiko、Noda Toru、Kaur Inderjeet、Das Taraprasad、Chakrabarti Subhabrata、Guymer Robyn H.、DeAngelis Margaret M.、Yamamoto Megumi、Baird Paul N.、Iwata Takeshi
    • Journal Title

      Journal of Biological Chemistry

      Volume: 296 Pages: 100456-100456

    • DOI

      10.1016/j.jbc.2021.100456

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Dominant Mutation in METTL23 gene is responsible for Normal tension glaucoma2022

    • Author(s)
      Pan Yang
    • Organizer
      The XXVth Biennial Meeting of the International Society of Eye Research (ISER) 2023
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] METTL23 mutation alters histone H3R17 methylation in normal-tension glaucoma2022

    • Author(s)
      Pan Yang
    • Organizer
      第15回RRM
    • Related Report
      2022 Annual Research Report
  • [Presentation] Dominant Mutation in X gene is responsible for Normal Tension Glaucoma2022

    • Author(s)
      Pan Yang
    • Organizer
      第1回NHOネットワーク共同研究 感覚器グループ会議・班会議
    • Related Report
      2022 Annual Research Report
  • [Presentation] The ARMS2 insertion/deletion leads to systemic upregulation of secreted HTRA1 levels in the blood in AMD patients2021

    • Author(s)
      Yang Pan; Akiko Suga; Toru Noda; Inderjeet Kaur; Taraprasad Das; Subhabrata Chakrabarti; Robyn H Guymer; Margaret M DeAngelis; Paul N Baird; Takeshi Iwata
    • Organizer
      2021 ARVO Annual Meeting
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] The ARMS2 insertion/deletion leads to increased circulating HTRA1 in AMD patients and in vitro2021

    • Author(s)
      Yang Pan, Daisuke Iejima, Mao Nakayama, Akiko Suga, Toru Noda, Inderjeet Kaur, Taraprasad Das, Subhabrata Chakrabarti, Robyn H. Guymer, Margaret M. DeAngelis, Paul N. Baird, Takeshi Iwata
    • Organizer
      第14回RRM
    • Related Report
      2021 Research-status Report
  • [Presentation] 常染色体優性遺伝による正常眼圧緑内障の新規原因遺伝子の解明2020

    • Author(s)
      潘洋1、木村至1、2、須賀晶子1、峰松尚子1、山本めぐみ1、間渕文彦3、柏木賢治3、志賀由己浩4、橋本和軌4、西口康二4、中澤徹4、高本光子5、相原一5、新家眞5、緑内障学会遺伝子研究班、岩田岳1
    • Organizer
      Japanese Glaucoam Society
    • Related Report
      2020 Research-status Report
  • [Remarks] 正常眼圧緑内障の新たな原因発症メカニズムの解明 ― エピジェネティックスと緑内障 ―

    • URL

      https://www.tohoku.ac.jp/japanese/2022/10/press20221031-01-glaucoma.html

    • Related Report
      2022 Annual Research Report
  • [Patent(Industrial Property Rights)] 家族性正常眼圧緑内障の診断補助方法、診断キット及びバイオマーカー2021

    • Inventor(s)
      潘 洋, 岩田 岳, 木村 至
    • Industrial Property Rights Holder
      潘 洋, 岩田 岳, 木村 至
    • Industrial Property Rights Type
      特許
    • Filing Date
      2021
    • Related Report
      2021 Research-status Report

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Published: 2020-04-28   Modified: 2024-01-30  

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