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Treatment development and elucidation of mechanism for radiation-induced osteonecrosis of the jaw with exosomes

Research Project

Project/Area Number 19K10264
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 57060:Surgical dentistry-related
Research InstitutionNagoya University

Principal Investigator

Okabe Kazuto  名古屋大学, 医学系研究科, 助教 (50801453)

Co-Investigator(Kenkyū-buntansha) 酒井 陽  名古屋大学, 医学部附属病院, 助教 (80772425)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords放射線性顎骨壊死 / エクソソーム / 歯髄幹細胞
Outline of Research at the Start

放射線治療は頭頸部がんに対して高い治療効果を有するが、口腔粘膜炎や口腔乾燥等の有害事象を必発する。特に晩期に発症する顎骨壊死は摂食障害や発音障害、審美障害をもたらし、著しくQOLを低下させる。しかしながら、顎骨壊死に対する治療法は未だ確立されておらず、放射線治療を推し進める上で解決しなければならない問題となっている。昨今、治療困難であった重篤な疾患に対して、間葉系幹細胞を由来とするエクソソームによる治療効果が注目されている。本研究では、さらに高い再生能力を持つ歯髄幹細胞を由来とするエクソソームに着目した放射線性顎骨壊死の新規治療法を開発し、発症機序の解明を図る。

Outline of Final Research Achievements

The purpose of this study was to develop a new treatment for radiation-induced osteonecrosis of the jaw (ORNJ), an intractable disease, using exosomes isolated from human dental pulp stem cells (DPSCs-EVs), and to clarify the pathogenesis of ORNJ. In cell experiments, we confirmed that co-culture with DPSCs-EVs promoted the proliferative ability of irradiated cells and inhibited cellular senescence. Based on these results, we moved on to animal experiments. Irradiated rats do not heal after tooth extraction and develop ORNJ. On the other hand, administration of DPSCs-EVs before tooth extraction promoted normal healing, suggesting that DPSCs-EVs may be a treatment for ORNJ and that cellular senescence may be a factor in its development.

Academic Significance and Societal Importance of the Research Achievements

放射線治療は頭頸部がんに対して高い治療効果を有し、機能や形態の温存の観点から選択されることは日常臨床において少なくない。その反面、様々な有害事象を患者にもたらす。中でも、放射線性顎骨壊死は治療法が確立しておらず、対応に苦慮し、顎骨切除を余儀なくされることが少なくない。その場合、摂食障害や発音障害、審美障害をもたらし、著しくQOLを低下させる。本研究では、DPSCsから単離したエクソソームの投与によりORNJの発症を抑制することを明らかにした。更なるエクソソームの解析により発症機序の解明や創薬へと引き継ぐことが可能となり、本研究は学術的ならびに社会的意義を有するものと考えられた。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (9 results)

All 2022 2021 2020

All Journal Article (3 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (4 results) Book (2 results)

  • [Journal Article] A case involving tooth extraction in a patient with acquired von Willebrand syndrome2021

    • Author(s)
      SAWAKI Tadashi、OKABE Kazuto、SAKAGUCHI Kohei、SAKAKURA Hiroki、KANEKO Ryuji、HIBI Hideharu
    • Journal Title

      Japanese Journal of Oral and Maxillofacial Surgery

      Volume: 67 Issue: 7 Pages: 459-463

    • DOI

      10.5794/jjoms.67.459

    • NAID

      130008090751

    • ISSN
      0021-5163, 2186-1579
    • Year and Date
      2021-07-20
    • Related Report
      2021 Annual Research Report
  • [Journal Article] The effect of macrophages on an atmospheric pressure plasma-treated titanium membrane with bone marrow stem cells in a model of guided bone regeneration.2020

    • Author(s)
      Toyama N, Tsuchiya S, Kamio H, Okabe K, Kuroda K, Okido M, Hibi H
    • Journal Title

      Journal of materials science. Materials in medicine

      Volume: 31 Issue: 8 Pages: 70-70

    • DOI

      10.1007/s10856-020-06412-7

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Chondroitin-4-sulfate transferase-1 depletion inhibits formation of a proteoglycan-rich layer and alters immunotolerance of bone marrow mesenchymal stem cells on titanium oxide surfaces.2020

    • Author(s)
      Kamio H, Tsuchiya S, Kuroda K, Okido M, Okabe K, Ohta Y, Toyama N, Hibi H
    • Journal Title

      Acta biomaterialia

      Volume: 114 Pages: 460-470

    • DOI

      10.1016/j.actbio.2020.07.034

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] ヒト歯髄幹細胞由来細胞外小胞が放射線性顎骨壊死に与える効果2022

    • Author(s)
      小原 豪,岡部一登,宋昕蔓, 渡邊純奈,外山直人,太田優也,小間義朗,日比英晴
    • Organizer
      第76回日本口腔科学会学術集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] p53変異頭頸部扁平上皮癌に対するTRAILと温熱療法を併用した治療法2021

    • Author(s)
      小原 豪,岡部一登,太田優也,山本憲幸,外山直人,浦田悠輔,日比英晴
    • Organizer
      第66回日本口腔外科学会総会・学術大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Fam20B depletion inhibits formation of proteoglycan-rich layer and alters calcification ability of bone marrow mesenchymal stem cells on titanium oxide surfaces2021

    • Author(s)
      Song Xinman, Kazuto Okabe, Hisanobu Kamio, Yuya Ohta, Go Ohara, Naoto Toyama, Hideharu Hibi
    • Organizer
      第75回日本口腔科学会学術集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 温熱療法を併用したTRAILの頭頸部扁平上皮癌に対する抗腫瘍効果2021

    • Author(s)
      小原 豪,岡部一登,太田優也,山本憲幸,日比英晴
    • Organizer
      第39回日本口腔腫瘍学会総会・学術大会
    • Related Report
      2021 Annual Research Report
  • [Book] Infected bone substitute after the bone augmentation in the maxilla: A case report2021

    • Author(s)
      Kazuto Okabe, Akira Sayo, Yuya Ohta, Go Ohara, Noriyuki Yamamoto, Hideharu Hibi
    • Total Pages
      54
    • Publisher
      Japanese Stomatological Society
    • ISBN
      9784990823733
    • Related Report
      2021 Annual Research Report
  • [Book] Oral Science in Japan 20202020

    • Author(s)
      Kazuto Okabe, Akira Sayo, Yuya Ohta, Go Ohara, Noriyuki Yamamoto, Hideharu Hibi
    • Total Pages
      54
    • Publisher
      Japanese stmatological society
    • ISBN
      9784990823733
    • Related Report
      2020 Research-status Report

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Published: 2019-04-18   Modified: 2023-01-30  

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