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Development of new therapeutic agents for diabetic complications including periodontal disease

Research Project

Project/Area Number 19K10079
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 57020:Oral pathobiological science-related
Research InstitutionNihon University

Principal Investigator

OHASHI Akiko  日本大学, 歯学部, 助教 (00571019)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywordsテトラヒドロビオプテリン / 血管障害 / 酸化ストレス / 一酸化窒素合成酵素 / TRPチャネル / 浸透圧 / 輸送体 / 一酸化窒素 / 活性酸素
Outline of Research at the Start

糖尿病性の血管障害は一酸化窒素合成酵素(eNOS)の機能不全を主因とする。eNOS機能不全のは内因性の補因子テトラヒドロビオプテリン(BH4)が酸化型のBH2に置き換わることによる。これに対してBH4の投与が試みられているが,BH4投与ではBH4の酸化によるBH2の増加が伴うため,実用化できていない。申請者らは,BH4投与時のBH4酸化が細胞外で起こる自動酸化ではなく,組織・細胞で酵素的に起こることを観察した。BH4の細胞への流入の制御により,BH4の過剰な酸化を抑制できると考え,本研究では,細胞内へのBH4の取り込みを担う『輸送体』を同定し,同時にその特異的阻害剤を探索する。

Outline of Final Research Achievements

In studies using model animals, supplementation with tetrahydrobiopterin (BH4), which regulates the eNOS response, is effective for angiopathy caused by eNOS dysfunction.However, sufficient results have not been obtained in clinical trials.We noted that the causes were the oxidation of BH4 and the inefficiency of BH4 replenishment.In this study, we showed that BH4 oxidation occurs enzymatically in cells and tissues rather than autoxidation, and that NADPH oxidase is involved in this BH4 oxidation. On the other hand, it was shown that the activity of the transporter responsible for BH4 transport, which determines the BH4 replenishment efficiency, is affected by osmotic pressure.

Academic Significance and Societal Importance of the Research Achievements

糖尿病の主な合併症は細小血管症 (腎症,網膜症,神経障害),大血管症(脳梗塞,心筋梗塞)である。これら血管症に次ぐ合併症として歯周病が注目されている。歯周病と糖尿病は相互に負の影響を与えるため,糖尿病患者において有意に悪化するだけでなく,歯周病が糖尿病の合併症(腎症,心疾患)を悪化させる。本研究成果は,BH4の酸化とBH4補充効率を改善する一助であり,歯周病ならびに糖尿病の合併症の有効な治療によって,多くの患者の生活の質の維持と健康寿命の延長への貢献が期待できる。

Report

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

    (13 results)

All 2022 2021 2020 2019

All Journal Article (5 results) (of which Peer Reviewed: 5 results) Presentation (8 results) (of which Int'l Joint Research: 3 results)

  • [Journal Article] セピアプテリンの末梢投与による脳内セロトニン代謝回転の亢進2022

    • Author(s)
      大橋晶子,永島利通,酒井嶺,外木守雄,佐藤秀一,髙橋富久
    • Journal Title

      日大歯学

      Volume: 96 Pages: 11-18

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] p53 deficiency promotes bone regeneration by functional regulation of mesenchymal stromal cells and osteoblasts.2022

    • Author(s)
      Nagashima T, Ninomiya T, Nakamura Y, Nishimura S, Ohashi A, Aoki J, Mizogguchi T, Tonogi M, Takahashi T
    • Journal Title

      J Bone Miner Metab

      Volume: - Issue: 3 Pages: 434-447

    • DOI

      10.1007/s00774-022-01314-w

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] テトラヒドロビオプテリンの薬理作用と臨床応用について2020

    • Author(s)
      大橋晶子,髙橋富久
    • Journal Title

      日大歯学

      Volume: 94 Pages: 55-63

    • NAID

      40022498703

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] CRISPR/Cas9-mediated in vivo gene editing reveals that neuronal 5-HT1A receptors in the dorsal raphe nucleus contribute to body temperature regulation in mice2019

    • Author(s)
      Nishitani Naoya、Ohmura Yu、Nagayasu Kazuki、Shibui Norihiro、Kaneko Shuji、Ohashi Akiko、Yoshida Takayuki、Yamanaka Akihiro、Yoshioka Mitsuhiro
    • Journal Title

      Brain Research

      Volume: 1719 Pages: 243-252

    • DOI

      10.1016/j.brainres.2019.06.009

    • NAID

      120006885155

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Forced expression of mouse progerin attenuates the osteoblast differentiation interrupting beta-catenin signal pathway in vitro.2019

    • Author(s)
      Tsukune Naoya, Naito Masako, Ohashi Akiko, Ninomiya Tadashi, Sato Shuichi, Takahashi Tomihisa
    • Journal Title

      Cell Tissue Res

      Volume: 375 Issue: 3 Pages: 655-664

    • DOI

      10.1007/s00441-018-2930-y

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] BH4の褐色脂肪組織への分化制御機構の解析,および胎生期における役割の検討.2021

    • Author(s)
      南野寛人,藤田義人,小栗靖生,大橋晶子,後藤剛,川原崎聡子,古谷太志,磯村望,武居晃平,李瀛,河田照雄,長谷川宏幸,稲垣暢也
    • Organizer
      第34回日本プテリジン研究会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Dynamic change of tetrahydrobiopterin and dihydrobiopterin in plasma and erythrocytes2020

    • Author(s)
      大橋晶子,髙橋富久
    • Organizer
      第62回歯科基礎医学会学術集会
    • Related Report
      2020 Research-status Report
  • [Presentation] Maternal Supplementation of Tetrahydrobiopterin Regulates Differentiation of Fetal Brown Adipose Tissue and Contributes to Offspring Metabolic Health2020

    • Author(s)
      HIROTO MINAMINO, YOSHIHITO FUJITA, YASUO OGURI, TSUYOSHI GOTO, AKIKO OHASHI, FUTOSHI FURUYA, NOZOMI ISOMURA, TAKESUE KOHEI, YING LI, SATOKO KAWARASAKI, TERUO KAWADA, HIROYUKI HASEGAWA and NOBUYA INAGAKI
    • Organizer
      American Diabetes Association's 80th Scientific Sessions
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] モノアミン産生細胞におけるテトラヒドロビオプテリンの2つの効果2019

    • Author(s)
      大橋晶子,原田智則,二宮禎,藤原恭子,髙橋富久,長谷川宏之
    • Organizer
      日本ビタミン学会第71回大会
    • Related Report
      2019 Research-status Report
  • [Presentation] Lamin Aの遺伝子変異体のprogerinの発現が骨芽細胞分化に与える影響2019

    • Author(s)
      髙橋富久,大橋晶子,二宮禎
    • Organizer
      第61回歯科基礎医学会学術集会
    • Related Report
      2019 Research-status Report
  • [Presentation] マウス歯根膜細胞のLRP1発現による抜歯窩修復への寄与2019

    • Author(s)
      二宮禎,中村純基,永島利通,大橋晶子,高橋富久
    • Organizer
      第61回歯科基礎医学会学術集会
    • Related Report
      2019 Research-status Report
  • [Presentation] Tetrahydrobiopterin Regulates Developmental Differentiation of Brown Adipose Tissue2019

    • Author(s)
      Minamino H, Fujita Y, Oguri Y, Goto T, Ohashi A, Furuya F, Isomura N, Kawarasaki S, Kawada T, Hasegawa H, Inagaki N
    • Organizer
      79th American Diabetes Association
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Tetrahydrobiopterin Is Required for Brown Adipose Tissue Development and Differentiation2019

    • Author(s)
      Minamino H, Fujita Y, Oguri Y, Goto T, Ohashi A, Furuya F, Isomura N, Kawarasaki S, Kawada T, Hasegawa H, Inagaki N
    • Organizer
      The 11th Scientific Meeting of the Asian Association for the Study of Diabetes
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research

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

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