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Deficiency of indoleamine 2,3-dioxygenase 2 is associated with the development of lifestyle-related diseases.

Research Project

Project/Area Number 19K07490
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 49030:Experimental pathology-related
Research InstitutionFujita Health University

Principal Investigator

Yamamoto Yasuko  藤田医科大学, 保健学研究科, 准教授 (00331869)

Co-Investigator(Kenkyū-buntansha) 藤垣 英嗣  藤田医科大学, 保健学研究科, 講師 (00612631)
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: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywordsトリプトファン代謝酵素 / 生活習慣病 / インシュリン抵抗性 / インドールアミン酸素添加酵素2 / トリプトファン代謝 / 脂質代謝 / IDO2 / 糖尿病
Outline of Research at the Start

生活習慣の変化による肥満率の増加は、生活習慣病の発症に深くかかわる因子である。また脂肪の蓄積による慢性炎症が生活習慣病に共通した基盤病態として注目を集めている。我々はこれまでにインドールアミン酸素添加酵素2 (Indoleamine 2,3-dioxygenase 2; IDO2)がマクロファージ内の炎症抑制に重要な役割を果たす事を明らかにしている。そこで本研究では糖尿病モデルマウスおよび臨床サンプルを用いた解析により、慢性炎症を起点とした糖尿病の発症にIDO2遺伝子が与える影響について検討を行う。またIDO2遺伝子変異が糖尿病発症のリスク因子になりうるかを明らかにする。

Outline of Final Research Achievements

Indoleamine 2,3-dioxygenase 2(IDO2), an isoform of IDO1, is a rate-limiting enzyme that catalyzes the initial reaction of the tryptophan kynurenine pathway, a major pathway in the metabolism of tryptophan. In this study, IDO2 knockout mice were fed a high-fat diet to investigate the effects of IDO2 deficiency on the inflammatory response of adipocytes and its involvement in the pathogenesis of lifestyle-related diseases.
In IDO2 knockout mice at 4 weeks after administration of a high-fat diet, significant increases were observed in serum biochemical parameters, namely, fasting blood glucose, cholesterol, and alanine aminotransferase. Furthermore, a blood glucose tolerance test showed increased insulin resistance in IDO2 knockout mice.In the long-term high-fat diet group, increased liver fibrosis was observed in IDO2 knockout mice compared with wild-type mice. Our results suggest that the deficiency of IDO2 might be a risk factor for lifestyle-related diseases.

Academic Significance and Societal Importance of the Research Achievements

生活習慣病は、不健全な生活の積み重ねによる内臓脂肪型肥満が原因となり引き起こされる。わが国においても生活習慣の変化による肥満率の増加は生活習慣病の増加につながる深刻な課題である。
本検討によりトリプトファン代謝酵素であるIDO2の欠失は、高脂肪食負荷により肝臓への脂肪蓄積およびインシュリン抵抗性を亢進する事が明らかとなった。さらに長期の高脂肪食負荷は、肝臓の線維化の亢進を認めた。IDO2は、生活習慣病の病態形成において重要な因子であることが明らかとなったことは、増加する生活習慣病の病態解明において新たな知見であると考えられる。

Report

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

    (12 results)

All 2021 2020 2019

All Journal Article (8 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 8 results,  Open Access: 6 results) Presentation (4 results) (of which Invited: 1 results)

  • [Journal Article] Serum Profiles of Tryptophan-Kynurenine Pathway Metabolites in Psoriasis.2021

    • Author(s)
      Mariko Seishima, Yasuko Yamamoto, Masashi Sakurai, Rika Sakai, Kento Fujii, Yoko Mizutani, Kuniaki Saito.
    • Journal Title

      Explor Immunol.

      Volume: 1 Pages: 258-268

    • DOI

      10.37349/ei.2021.00017

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Serum GP88 as a predictive biomarker for hepatocellular carcinoma in patients with viral hepatitis C after direct-acting antiviral agents.2021

    • Author(s)
      Hidekazu Ishida, Masao Takemura, Atsushi Suetsugu, Takafumi Naiki, Takuji Tanaka, Tomita Eiichi, Ginette Serrero, Hidetoshi Matsunami, Yasuko Yamamoto, Kuniaki Saito.
    • Journal Title

      Annals of Clinical Biochemistry.

      Volume: 11 Issue: 6 Pages: 605-613

    • DOI

      10.1177/00045632211036723

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Kynurenine 3-monooxygenase deficiency induces depression-like behavior via enhanced antagonism of α7 nicotinic acetylcholine receptors by kynurenic acid2021

    • Author(s)
      Mori Yuko、Mouri Akihiro、Kunisawa Kazuo、Hirakawa Mami、Kubota Hisayoshi、Kosuge Aika、Niijima Moe、Hasegawa Masaya、Kurahashi Hitomi、Murakami Reiko、Hoshi Masato、Nakano Takashi、Fujigaki Suwako、Fujigaki Hidetsugu、Yamamoto Yasuko、Nabeshima Toshitaka、Saito Kuniaki
    • Journal Title

      Behavioural Brain Research

      Volume: 405 Pages: 113191-113191

    • DOI

      10.1016/j.bbr.2021.113191

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Progranulin depletion inhibits proliferation via the transforming growth factor beta/SMAD family member 2 signaling axis in Kasumi-1 cells2021

    • Author(s)
      Yabe Kuniaki、Yamamoto Yasuko、Takemura Masao、Hara Takeshi、Tsurumi Hisashi、Serrero Ginette、Nabeshima Toshitaka、Saito Kuniaki
    • Journal Title

      Heliyon

      Volume: 7 Issue: 1 Pages: e05849-e05849

    • DOI

      10.1016/j.heliyon.2020.e05849

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Serum metabolic profiles of the tryptophan-kynurenine pathway in the high risk subjects of major depressive disorder2020

    • Author(s)
      Sakurai Masashi、Yamamoto Yasuko、Kanayama Noriyo、Hasegawa Masaya、Mouri Akihiro、Takemura Masao、Matsunami Hidetoshi、Miyauchi Tomoya、Tokura Tatsuya、Kimura Hiroyuki、Ito Mikiko、Umemura Eri、(Boku) Aiji Sato、Nagashima Wataru、Tonoike Takashi、Kurita Kenichi、Ozaki Norio、Nabeshima Toshitaka、Saito Kuniaki
    • Journal Title

      Scientific Reports

      Volume: 10 Issue: 1 Pages: 1961-1961

    • DOI

      10.1038/s41598-020-58806-w

    • Related Report
      2020 Research-status Report 2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Kynurenine produced by indoleamine 2,3-dioxygenase 2 exacerbates acute liver injury by carbon tetrachloride in mice.2020

    • Author(s)
      Hoshi M, Osawa Y, Nakamoto K, Morita N, Yamamoto Y, Ando T, Tashita C, Nabeshima T, Saito K.
    • Journal Title

      Toxicology

      Volume: 438 Pages: 152458-152458

    • DOI

      10.1016/j.tox.2020.152458

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Indoleamine 2,3‐dioxygenase 2 depletion suppresses tumor growth in a mouse model of Lewis lung carcinoma2019

    • Author(s)
      Yamasuge Wakana、Yamamoto Yasuko、Fujigaki Hidetsugu、Hoshi Masato、Nakamoto Kentaro、Kunisawa Kazuo、Mouri Akihiro、Nabeshima Toshitaka、Saito Kuniaki
    • Journal Title

      Cancer Science

      Volume: 110 Issue: 10 Pages: 3061-3067

    • DOI

      10.1111/cas.14179

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Selective and competitive inhibition of kynurenine aminotransferase 2 by glycyrrhizic acid and its analogues2019

    • Author(s)
      Yoshida Yukihiro、Fujigaki Hidetsugu、Kato Koichi、Yamazaki Kyoka、Fujigaki Suwako、Kunisawa Kazuo、Yamamoto Yasuko、Mouri Akihiro、Oda Akifumi、Nabeshima Toshitaka、Saito Kuniaki
    • Journal Title

      Scientific Reports

      Volume: 9 Issue: 1 Pages: 10243-10243

    • DOI

      10.1038/s41598-019-46666-y

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Indoleamine 2,3-dioxygenase 2 (IDO2)欠失による乾癬病態増悪のメカニズム解明2021

    • Author(s)
      酒井 里佳, 山本康子、藤垣英嗣、齋藤邦明
    • Organizer
      日本トリプトファン研究会第40回学術集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Indoleamine 2,3-dioxygenase 2 (IDO2)欠失による乾癬病態増悪のメカニズム解明2021

    • Author(s)
      酒井 里佳, 山本康子、藤垣英嗣、齋藤邦明
    • Organizer
      第15回日本臨床検査学教育学会学術大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 疾患バイオマーカーとしてのトリプトファン ― キヌレニン経路2020

    • Author(s)
      山本康子、藤垣英嗣、齋藤邦明
    • Organizer
      第67回日本臨床検査医学会学術集会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] トリプトファン代謝酵素 indoleamine 2,3-dioxygenase 2欠損が脳内に及ぼす影響2020

    • Author(s)
      石川雅樹、山本康子、齋藤邦明
    • Organizer
      第60回日本臨床化学会年次学術集会
    • Related Report
      2020 Research-status Report

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

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