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in situ odontoblast direct reprogramming

Research Project

Project/Area Number 22K19611
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 57:Oral science and related fields
Research InstitutionTohoku University

Principal Investigator

Suzuki Shigeki  東北大学, 大学病院, 講師 (30549762)

Co-Investigator(Kenkyū-buntansha) 山崎 研志  東北大学, 医学系研究科, 非常勤講師 (40294798)
山田 聡  東北大学, 歯学研究科, 教授 (40359849)
土屋 志津  広島大学, 医系科学研究科(歯), 助教 (60610053)
Project Period (FY) 2022-06-30 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2023: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2022: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Keywords象牙芽細胞 / 相分離 / ダイレクトリプログラミング / クロマチンアクセシビリティ / ATAC-seq / IKBZ / エピゲノム・トランスクリプトーム統合解析 / 象牙質 / エピジェネティクス / IkBz
Outline of Research at the Start

IkBz KO象牙芽細胞では、象牙芽細胞分化マーカーおよび象牙質基質タンパク質をコードする遺伝子群(象牙質機能性遺伝子群)の遺伝子座特異的に、転写活性化ヒストン修飾であるH3K4me3が検出される現象を見い出している。そこで本研究では、生理的象牙質形成促進モデルであるIkBz KOマウスを開発基盤として、WT象牙芽細胞では形成されることのないIkBz KO象牙芽細胞特有のクロマチン高次構造を利用し、象牙芽細胞ダイレクトリプログラミング因子を同定することで、歯髄線維芽細胞から生理的象牙質を形成する「真」の象牙芽細胞へin situ ダイレクトリプログラミングする技術開発に挑戦する。

Outline of Final Research Achievements

To clarify the transcriptome machinery in which genes associated with dentin extracellular matrix organization are efficiently transcribed, we attempted to isolate the phase separation within the nuclear of odontoblasts by transfecting phase separation tools and to analyze the changes in whole-genomic chromatin accessibility during induced differentiation of human dental pulp stem cells (hDPSC). We failed to isolate the enough amounts of phase separated nuclear fraction in mouse odontoblasts due to insufficiency of phase separation tools. However, ATAC-seq analyses of hDPSC successfully disclosed that local epigenetic alteration mediated by the insulators may possess pivotal roles for hDPSC differentiation and, therefore, the chromatin accessibility modulation should have therapeutic potential for inducing odontogenic differentiation of hDPSC.

Academic Significance and Societal Importance of the Research Achievements

象牙質は象牙芽細胞が分泌する細胞外基質とその石灰化により形成される。しかしながら、萌出後に形成される反応性象牙質は骨様硬組織であり歯髄保護が十分でない。さらに、近年、リバスキュラリゼーション法と呼ばれる歯内療法の開発が進んでおり、根管充填材を充填するのではなく、根尖孔外から髄腔内に意図的出血を誘導し、歯髄腔内に生活組織を誘導することが可能となっている。しかしながら、歯髄腔内に形成される生活組織は歯根膜組織/セメント質であり、in situダイレクトリプログラミングする技術開発が必要である。本研究により、生理学的な覆髄法およびリバスキュラリゼーション法樹立に向けた基礎的知見を得ることができた。

Report

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

    (18 results)

All 2024 2023 2022

All Journal Article (10 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 9 results,  Open Access: 9 results) Presentation (8 results) (of which Int'l Joint Research: 4 results,  Invited: 2 results)

  • [Journal Article] Cementocyte-derived extracellular vesicles regulate osteoclastogenesis and osteoblastogenesis2024

    • Author(s)
      Li Jiajun、Sakisaka Yukihiko、Nemoto Eiji、Maruyama Kentaro、Suzuki Shigeki、Xiong Kaixin、Tada Hiroyuki、Tenkumo Taichi、Yamada Satoru
    • Journal Title

      Journal of Dental Sciences

      Volume: ‐ Issue: 4 Pages: 2236-2246

    • DOI

      10.1016/j.jds.2024.02.025

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Chromatin Accessibility Analysis Reveals Functional Transcription Factors and Regulators in Dental Pulp Stem Cell Differentiation2023

    • Author(s)
      鈴木 茂樹、長谷川 龍、佐藤 瞭子、大道寺 美乃、長﨑 果林、根本 英二、山田 聡
    • Journal Title

      The Japanese Journal of Conservative Dentistry

      Volume: 66 Issue: 3 Pages: 179-191

    • DOI

      10.11471/shikahozon.66.179

    • ISSN
      0387-2343, 2188-0808
    • Year and Date
      2023-06-30
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The histone deacetylase inhibitor MS-275 enhances the matrix mineralization of dental pulp stem cells by inducing fibronectin expression2023

    • Author(s)
      Suzuki Shigeki、Sasaki Kento、Fahreza Rahmad Rifqi、Nemoto Eiji、Yamada Satoru
    • Journal Title

      Journal of Dental Sciences

      Volume: - Issue: 3 Pages: 1680-1690

    • DOI

      10.1016/j.jds.2023.11.019

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Mice Lacking PLAP-1/Asporin Show Alteration of Periodontal Ligament Structures and Acceleration of Bone Loss in Periodontitis2023

    • Author(s)
      Kinoshita Masaki、Yamada Satoru、Sasaki Junichi、Suzuki Shigeki、Kajikawa Tetsuhiro、Iwayama Tomoaki、Fujihara Chiharu、Imazato Satoshi、Murakami Shinya
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 24 Issue: 21 Pages: 15989-15989

    • DOI

      10.3390/ijms242115989

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Dynamic changes in chromatin accessibility during the differentiation of dental pulp stem cells reveal that induction of odontogenic gene expression is linked with specific enhancer construction2023

    • Author(s)
      Sasaki Kento、Suzuki Shigeki、Fahreza Rahmad Rifqi、Nemoto Eiji、Yamada Satoru
    • Journal Title

      Journal of Dental Sciences

      Volume: - Issue: 3 Pages: 1705-1713

    • DOI

      10.1016/j.jds.2023.10.022

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Procyanidin B2 enhances anti-inflammatory responses of periodontal ligament cells by inhibiting the dominant negative pro-inflammatory isoforms of peroxisome proliferator-activated receptor γ2023

    • Author(s)
      Yamamoto Tadahiro、Yuan Hang、Suzuki Shigeki、Nemoto Eiji、Saito Masahiro、Yamada Satoru
    • Journal Title

      Journal of Dental Sciences

      Volume: - Issue: 3 Pages: 1801-1810

    • DOI

      10.1016/j.jds.2023.09.027

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Public RNA-seq data-based identification and functional analyses reveal that MXRA5 retains proliferative and migratory abilities of dental pulp stem cells2023

    • Author(s)
      Yoshida Kazuma、Suzuki Shigeki、Yuan Hang、Sato Akiko、Hirata-Tsuchiya Shizu、Saito Masahiro、Yamada Satoru、Shiba Hideki
    • Journal Title

      Scientific Reports

      Volume: 13 Issue: 1 Pages: 1-16

    • DOI

      10.1038/s41598-023-42684-z

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Pharmacological Activation of YAP/TAZ by Targeting LATS1/2 Enhances Periodontal Tissue Regeneration in a Murine Mode2023

    • Author(s)
      Akiko Sato,Shigeki Suzuki,Hang Yuan,Rahmad Rifqi Fahreza,Xiuting Wang,Eiji Nemoto,Masahiro Saito and Satoru Yamada
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 24 Issue: 2 Pages: 970-970

    • DOI

      10.3390/ijms24020970

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Epigenetics in susceptibility, progression, and diagnosis of periodontitis2022

    • Author(s)
      Suzuki Shigeki、Yamada Satoru
    • Journal Title

      Japanese Dental Science Review

      Volume: 58 Pages: 183-192

    • DOI

      10.1016/j.jdsr.2022.06.001

    • Related Report
      2022 Research-status Report
  • [Journal Article] Loss of IκBζ Drives Dentin Formation via Altered H3K4me3 Status2022

    • Author(s)
      Yuan H.、Suzuki S.、Terui H.、Hirata-Tsuchiya S.、Nemoto E.、Yamasaki K.、Saito M.、Shiba H.、Aiba S.、Yamada S.
    • Journal Title

      Journal of Dental Research

      Volume: Online ahead of print Issue: 8 Pages: 951-961

    • DOI

      10.1177/00220345221075968

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Integrative epigenomic and transcriptomic analysis reveals that transcriptional factor competition at the distal enhancers of the Samd9l gene locus regulates osteoblast survival and activity in an inflammatory environment.2023

    • Author(s)
      Suzuki S
    • Organizer
      The 71st Annual Meeting of Japanese Association of Dental Research
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Establishment of pulp revascularization in the mouse model.2023

    • Author(s)
      Wang X, Suzuki S, Yamada S.
    • Organizer
      The 71st Annual Meeting of Japanese Association of Dental Research
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] RMND5A involvement in periodontal tissue homeostasis.2023

    • Author(s)
      Fahreza RR, Suzuki S, Nemoto E, Yamada S.
    • Organizer
      The 71st Annual Meeting of Japanese Association of Dental Research
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] The role of Piezo1 pathway on cementocyte functions.2023

    • Author(s)
      Xiong K, Chen L, Sakisaka Y, Suzuki S, Tenkumo T, Nemoto E, Yamada S.
    • Organizer
      The 71st Annual Meeting of Japanese Association of Dental Research
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 歯髄幹細胞分化過程におけるクロマチンアクセシビリティ解析.2023

    • Author(s)
      鈴木茂樹,佐藤瞭子,大道寺美乃,長﨑果林,長谷川 龍,根本英二,山田 聡.
    • Organizer
      日本歯科保存学会2023年度春季学術大会(第158回)
    • Related Report
      2023 Annual Research Report
  • [Presentation] 実験的歯周炎-歯周組織再生モデルにおける歯周組織エピゲノム変化の解析.2023

    • Author(s)
      大道寺美乃,鈴木茂樹,佐藤瞭子,山本真豊,佐々木健人,Wang X,長﨑果林,Rahmad Rifqi Fahreza,長谷川 龍,根本英二,山田 聡.
    • Organizer
      第66回春季日本歯周病学会学術大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Functional Roles of RMND5A in Periodontal Tissue Homeostasis.2023

    • Author(s)
      Fahreza RR, Suzuki S, Sato A, Yamamoto T, Sasaki K, Wang X, Daidoji Y, Nagasaki K, Hasegawa R, Nemoto E, Yamada S.
    • Organizer
      第66回春季日本歯周病学会学術大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] エピゲノムから捉える炎症と再生の交差点2022

    • Author(s)
      鈴木茂樹
    • Organizer
      第65回秋季日本歯周病学会学術大会
    • Related Report
      2022 Research-status Report
    • Invited

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

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