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Targeting Tryptophan Metabolism for Immune Regulation of Sepsis and Novel Therapeutic Strategies

Research Project

Project/Area Number 20K07432
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

Hoshi Masato  藤田医科大学, 保健学研究科, 准教授 (40633996)

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: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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)
KeywordsKMO / 3-hydroxykinurenine / Endotoxic shock / Interleukin-6 / ATF4 / Sepsis / 3-hydroxykynurenine / CLP / LPS / 敗血症 / トリプトファン代謝 / IDO / 炎症性サイトカイン
Outline of Research at the Start

近年、腫瘍や自己免疫性疾患等の各種炎症性疾患において、免疫チェックポイント阻害剤を始めとした自己免疫の制御が、極めて高い治療効果を上げることが知られている。一方で、細菌感染等により引き起こされる敗血症は、抗菌薬による治療が中心であり致死率や耐性菌の増加が課題となっている。本研究は、炎症性サイトカインにより酵素誘導され、免疫細胞を強力に制御することで注目されているトリプトファン代謝に着目し、敗血症における自己免疫制御機構への作用機序の解明と病態把握及び治療介入できる集団を弁別する検査法の確立を目的とする。

Outline of Final Research Achievements

Despite advances in our understanding of endotoxic shock, novel therapeutic interventions that can reduce the burden of sepsis remain elusive. Current treatment options are limited, and it is only through refinements in the ways that we deliver supportive care that mortality has fallen over the years.
Here, the role of kynurenine 3-monooxygenase (KMO) in immune regulation was examined in LPS-induced endotoxemia using KMOKO and WT mice treated with the KMO inhibitor Ro61-8048. We showed that LPS-induced or cecal ligation and puncture-induced mortality and hepatic IL-6 production increased in the absence of KMO, possibly involving increased ATF4 signaling in hepatic macrophages. Moreover, treatment of septic mice with 3-hydroxykynurenine reduced mortality rates and inflammatory responses regardless of the presence or absence of KMO.

Academic Significance and Societal Importance of the Research Achievements

抗菌薬の出現により細菌感染による死亡率は著しく減少したが、抗菌薬使用による耐性菌の問題やさらなる治療成績向上には、細菌を標的とする抗菌薬に加えて、生体側の免疫制御を標的とした新規治療戦略および検査法の確立が早急の課題である。
本研究では、マウス敗血症モデルにおけるKMOの役割を明らかにしたと共に、KMOの制御は耐性菌やさらなる治療効果の向上に向けた新規治療戦略となり得ることが期待された。

Report

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

    (11 results)

All 2022 2021 2020

All Journal Article (7 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 7 results,  Open Access: 6 results) Presentation (4 results)

  • [Journal Article] D-allose enhances the efficacy of hydroxychloroquine against Lewis lung carcinoma cell growth by inducing autophagy2022

    • Author(s)
      Kyoka Yamazaki、Masato Hoshi、Hiroyuki Tezuka、Nanaka Morita、Masaya Hirayama、Fumiaki Sato、Sayaka Yoshida、Kuniaki Saito
    • Journal Title

      Oncology Reports

      Volume: 47 Issue: 6 Pages: 117-117

    • DOI

      10.3892/or.2022.8328

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Absence of indoleamine 2,3?dioxygenase 2 promotes liver regeneration after partial hepatectomy in mice2022

    • Author(s)
      Ando Tatsuya、Hoshi Masato、Tezuka Hiroyuki、Ito Hiroyasu、Nakamoto Kentaro、Yamamoto Yasuko、Saito Kuniaki
    • Journal Title

      Molecular Medicine Reports

      Volume: 27 Issue: 2 Pages: 24-24

    • DOI

      10.3892/mmr.2022.12911

    • Related Report
      2022 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
      2021 Research-status Report 2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Evaluation of red blood cell parameters provided by the UF-5000 urine auto-analyzer in patients with glomerulonephritis282021

    • Author(s)
      Genki Mizuno
    • Journal Title

      Clin Chem Lab Med

      Volume: 28 Issue: 9 Pages: 1547-1553

    • DOI

      10.1515/cclm-2021-0287

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] 3-Hydroxykynurenine Regulates Lipopolysaccharide-Stimulated IL-6 Production and Protects against Endotoxic Shock in Mice2021

    • Author(s)
      Hoshi Masato、Kubo Hisako、Ando Tatsuya、Tashita Chieko、Nakamoto Kentaro、Yamamoto Yasuko、Tezuka Hiroyuki、Saito Kuniaki
    • Journal Title

      ImmunoHorizons

      Volume: 5 Issue: 6 Pages: 523-534

    • DOI

      10.4049/immunohorizons.2100028

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Viability of diffuse large B-cell lymphoma cells is regulated by kynurenine 3-monooxygenase activity2021

    • Author(s)
      Morita Nanaka、Hoshi Masato、Hara Takeshi、Ninomiya Soranobu、Enoki Taisuke、Yoneda Misao、Tsurumi Hisashi、Saito Kuniaki
    • Journal Title

      Oncology Letters

      Volume: 22 Issue: 5 Pages: 110-110

    • DOI

      10.3892/ol.2021.13051

    • Related Report
      2021 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
  • [Presentation] CD8+制御性T細胞はLPS誘導性敗血症の重症化を抑制する2022

    • Author(s)
      森田那奈架、星 雅人、手塚裕之、吉田清賀、佐藤史明、横井浩幸、斎藤邦明
    • Organizer
      第54回藤田医科大学医学会学術集会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Involvement of cerebellum blood-brain barrier in the depression-like behaviors induced by chronic social defeat stress.2021

    • Author(s)
      Aika Kosuge, Kazuo Kunisawa, Hiroyuki Tezuka, Masato Hoshi, Nanaka Morita, Yasuko Yamamoto, Kuniaki Saito, Toshitaka Nabeshima, Akihiro Mouri
    • Organizer
      第64回日本神経化学会
    • Related Report
      2021 Research-status Report
  • [Presentation] HILIC-ESI-MS/MSによる希少糖ヌクレオチドの探索2021

    • Author(s)
      中嶋和紀、木下充弘、星雅人、髙橋和男
    • Organizer
      第40回日本糖質学会
    • Related Report
      2021 Research-status Report
  • [Presentation] びまん性大細胞型B細胞リンパ腫の生存率はキヌレニン-3-モノオキシゲナーゼにより制御される2021

    • Author(s)
      森田那奈架、星 雅人、吉田清賀、佐藤史明、斎藤邦明
    • Organizer
      第40回JSTRY
    • Related Report
      2021 Research-status Report

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

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