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NADPH oxidase mediates supersulfide activation and regulates infection and inflammatory responses

Planned Research

Project AreaLife Science Innovation Driven by Supersulfide Biology
Project/Area Number 21H05267
Research Category

Grant-in-Aid for Transformative Research Areas (A)

Allocation TypeSingle-year Grants
Review Section Transformative Research Areas, Section (III)
Research InstitutionKumamoto University

Principal Investigator

澤 智裕  熊本大学, 大学院生命科学研究部(医), 教授 (30284756)

Co-Investigator(Kenkyū-buntansha) 住本 英樹  久留米大学, 医学部, 客員教授 (30179303)
Project Period (FY) 2021-09-10 – 2026-03-31
Project Status Granted (Fiscal Year 2025)
Budget Amount *help
¥89,050,000 (Direct Cost: ¥68,500,000、Indirect Cost: ¥20,550,000)
Fiscal Year 2025: ¥16,380,000 (Direct Cost: ¥12,600,000、Indirect Cost: ¥3,780,000)
Fiscal Year 2024: ¥17,030,000 (Direct Cost: ¥13,100,000、Indirect Cost: ¥3,930,000)
Fiscal Year 2023: ¥16,250,000 (Direct Cost: ¥12,500,000、Indirect Cost: ¥3,750,000)
Fiscal Year 2022: ¥17,030,000 (Direct Cost: ¥13,100,000、Indirect Cost: ¥3,930,000)
Fiscal Year 2021: ¥22,360,000 (Direct Cost: ¥17,200,000、Indirect Cost: ¥5,160,000)
Keywords超硫黄 / グルタチオン / 肺炎球菌 / 超硫黄分子 / NADPHオキシダーゼ / NO合成酵素 / 炎症 / カテネーション
Outline of Research at the Start

本課題では、これまで全く知られていなかったNADPHオキシダーゼ(Nox)およびNO合成酵素(NOS)ファミリーの新規超硫黄分子代謝機構の解明を目指す。具体的には、NoxとNOSがともにNADPH依存的に超硫黄分子を活性化する可能性を検討し、これらの酵素を、硫黄の酸化還元酵素という機能特性に基づき、NADPH:Sulfur Oxidoreductase (NSOR)として再定義する。さらに、活性酸素や一酸化窒素と超硫黄分子による抗菌・抗炎症制御のクロストークを明らかにして、NSOR活性に基づき抗菌・抗炎症を誘導するという新たな発想に立脚した超硫黄分子創薬を目指す。

Outline of Annual Research Achievements

NADPHオキシダーゼ (Nox) はこれまで、Noxは酸素分子に電子を渡すことで、スーパーオキシド等を生成するとされてきた。しかし、最近、Noxファミリー因子であるNox2とNox4がそれぞれ、極めて効率よく超硫黄分子に電子を渡して、硫黄側鎖が伸長した高反応性の超硫黄分子を産生することを示した。さらに、一酸化窒素合成酵素NOSも同様の活性を有することを見出した。本課題では、NoxとNOSがともにNADPH依存的に超硫黄分子を活性化する可能性を検討し、これらの酵素を、硫黄の酸化還元酵素という機能特性に基づき、NADPH:Sulfur Oxidoreductase (NSOR)として再定義する。さらに、活性酸素や一酸化窒素と超硫黄分子による抗菌・抗炎症制御のクロストークを明らかにして、NSOR活性に基づき抗菌・抗炎症を誘導するという新たな発想に立脚した超硫黄分子創薬を目指す。本年度は、細胞内で超硫黄分子が活性化される場所、つまり細胞内のどこにNoxが局在化されるか、という点を解析した。Noxファミリー(ヒトではNox1からNox5およびDuox1とDuox2の7メンバー)は膜貫通型の酵素であるが、本研究により、上皮細胞ではそれぞれが異なる膜に局在することを示した。また本研究で、Nox1/2をapical膜に局在化させる分子機構について解析し、その局在化にはアダプタータンパク質GRAF3が必要であることを明らかにした。Trans-Golgi network (TGN)からrecycling endosomeを経てapical膜に輸送される過程にGRAF3が関与する(GRAF3のそのような役割は今まで全く知られていなかった)。さらにNoxタンパク質の安定化についても解析し、低酸素によってNox4の発現量が増加することを明らかにした。

Current Status of Research Progress
Current Status of Research Progress

1: Research has progressed more than it was originally planned.

Reason

これまで明らかではなかったNoxの細胞内局在についてそれらを制御する機構を含めて明らかにすることができた。これは本研究の目的である超硫黄のリモデリングにも大きく関わる可能性があり、今後の研究の方向性にも大きく寄与すると考えられるため。

Strategy for Future Research Activity

本年度は、昨年度に調製が完了した肺炎球菌由来Noxについて機能解析をすすめる。現在まで予備的な検討で、得られた肺炎球菌由来NoxがNADPHを酸化すること、さらにこの反応にGSSSGを基質として用いることを確認している。今年度はさらに、この反応物における超硫黄メタボロミクスを行い、酵素反応の詳細を解析する。さらにその大腸菌の酸化ストレス抵抗性を解析する。

Report

(3 results)
  • 2023 Annual Research Report
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • Research Products

    (21 results)

All 2024 2023 2022 Other

All Int'l Joint Research (1 results) Journal Article (12 results) (of which Int'l Joint Research: 6 results,  Peer Reviewed: 12 results,  Open Access: 12 results) Presentation (8 results) (of which Int'l Joint Research: 4 results,  Invited: 4 results)

  • [Int'l Joint Research] Brown University/University of California(米国)

    • Related Report
      2023 Annual Research Report
  • [Journal Article] Acute Kidney Injury Caused by Rhabdomyolysis Is Ameliorated by Serum Albumin-Based Supersulfide Donors through Antioxidative Pathways2024

    • Author(s)
      Ikeda-Imafuku Mayumi、Fukuta Tatsuya、Tuan Giam Chuang Victor、Sawa Tomohiro、Maruyama Toru、Otagiri Masaki、Ishida Tatsuhiro、Ishima Yu
    • Journal Title

      Pharmaceuticals

      Volume: 17 Issue: 1 Pages: 128-128

    • DOI

      10.3390/ph17010128

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Thioglucose-derived tetrasulfide, a unique polysulfide model compound2024

    • Author(s)
      Lindahl Stephen、Shieh Meg、Zhang Tianli、Guo Chunyu、Robinson Jerome R.、Sawa Tomohiro、Xian Ming
    • Journal Title

      Redox Biology

      Volume: 70 Pages: 103045-103045

    • DOI

      10.1016/j.redox.2024.103045

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Regulation of innate immune and inflammatory responses by supersulfides2024

    • Author(s)
      Tsutsuki Hiroyasu、Zhang Tianli、Akaike Takaaki、Sawa Tomohiro
    • Journal Title

      International Immunology

      Volume: 36 Issue: 4 Pages: 143-154

    • DOI

      10.1093/intimm/dxad057

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Redox regulation of xenobiotics by reactive sulfur and supersulfide species2024

    • Author(s)
      Zhang Tianli、Akaike Takaaki、Sawa Tomohiro
    • Journal Title

      Antioxidants Redox Signaling

      Volume: 40 Issue: 10-12 Pages: 679-690

    • DOI

      10.1089/ars.2022.0172

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Hypoxia stabilizes the H2 O2 -producing oxidase Nox4 in cardiomyocytes via suppressing autophagy-related lysosomal degradation.2024

    • Author(s)
      Matsunaga S, Kohda A, Kamakura S, Hayase J, Miyano K, Shiose A, Sumimoto H.
    • Journal Title

      Genes Cells

      Volume: 29 Issue: 1 Pages: 63-72

    • DOI

      10.1111/gtc.13085

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] TMEM25 is a Par3-binding protein that attenuates claudin assembly during tight junction development.2024

    • Author(s)
      Kamakura S, Hayase J, Kohda A, Iwakiri Y, Chishiki K, Izaki T, Sumimoto H.
    • Journal Title

      EMBO Rep.

      Volume: 25 Issue: 1 Pages: 144-167

    • DOI

      10.1038/s44319-023-00018-0

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Altered Fhod3 Expression Involved in Progressive High-Frequency Hearing Loss via Dysregulation of Actin Polymerization Stoichiometry in The Cuticular Plate.2024

    • Author(s)
      Boussaty EC, Ninoyu Y, Andrade L, Li Q, Takeya R, Sumimoto H, Ohyama T, Wahlin KJ, Manor U, Friedman RA.
    • Journal Title

      PLoS Genet.

      Volume: 20 Issue: 3 Pages: e1011211-e1011211

    • DOI

      10.1371/journal.pgen.1011211

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Alkyl gallates inhibit serine O-acetyltransferase in bacteria and enhance susceptibility of drug-resistant Gram-negative bacteria to antibiotics2023

    • Author(s)
      Toyomoto Touya、Ono Katsuhiko、Shiba Tomoo、Momitani Kenta、Zhang Tianli、Tsutsuki Hiroyasu、Ishikawa Takeshi、Hoso Kanae、Hamada Koma、Rahman Azizur、Wen Liping、Maeda Yosuke、Yamamoto Keiichi、Matsuoka Masao、Hanaoka Kenjiro、Niidome Takuro、Akaike Takaaki、Sawa Tomohiro
    • Journal Title

      Frontiers in Microbiology

      Volume: 14 Pages: 1276447-1276447

    • DOI

      10.3389/fmicb.2023.1276447

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Sulfur metabolic response in macrophage limits excessive inflammatory response by creating a negative feedback loop.2023

    • Author(s)
      Takeda H, Murakami S, Liu Z, Sawa T, Takahashi M, Izumi Y, Bamba T, Sato H, Akaike T, Sekine H, Motohashi H*.
    • Journal Title

      Redox Biology

      Volume: 65 Pages: 102834-102834

    • DOI

      10.1016/j.redox.2023.102834

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Supersulphides provide airway protection in viral and chronic lung diseases2023

    • Author(s)
      Matsunaga Tetsuro、Sano Hirohito、Takita Katsuya、Morita Masanobu、Yamanaka Shun、Ichikawa Tomohiro、Numakura Tadahisa、Ida Tomoaki、Jung Minkyung、Ogata Seiryo、Yoon Sunghyeon、Fujino Naoya、Kyogoku Yorihiko、Akaike Takaaki、et al.
    • Journal Title

      Nature Communications

      Volume: 14 Issue: 1 Pages: 4476-4476

    • DOI

      10.1038/s41467-023-40182-4

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Supersulfide biology and translational medicine for disease control2023

    • Author(s)
      Barayeu Uladzimir、Sawa Tomohiro、Nishida Motohiro、Wei Fan-Yan、Motohashi Hozumi、Akaike Takaaki
    • Journal Title

      British Journal of Pharmacology

      Volume: - Pages: 1-11

    • DOI

      10.1111/bph.16271

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] GPR125 (ADGRA3) is an autocleavable adhesion GPCR that traffics with Dlg1 to the basolateral membrane and regulates epithelial apicobasal polarity.2022

    • Author(s)
      Sakurai T, Kamakura S, Hayase J, Kohda A, Nakamura M, Sumimoto H.
    • Journal Title

      J. Biol. Chem.

      Volume: 298 Issue: 10 Pages: 102475-102475

    • DOI

      10.1016/j.jbc.2022.102475

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 上皮細胞におけるNoxファミリーの局在制御の分子メカニズム2023

    • Author(s)
      神田 朗,住本 英樹
    • Organizer
      第96回日本生化学会大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 細胞極性制御因子によるtight junction形成の制御機構2023

    • Author(s)
      鎌倉 幸子,住本 英樹
    • Organizer
      第96回日本生化学会大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 超硫黄分子による炎症応答制御2023

    • Author(s)
      澤 智裕
    • Organizer
      第76回日本酸化ストレス学会学術集会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 超硫黄分子による炎症応答制御2023

    • Author(s)
      澤 智裕
    • Organizer
      第96回日本生化学会大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Protein S-sulfhydration based regulation of NLRP3 inflammasome2022

    • Author(s)
      Tianli Zhang, Hiroyasu Tsutsuki, Motohiro Nishida, Takaaki Akaike, Tomohiro Sawa
    • Organizer
      Gordon Research Conference
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Regulation of innate immune responses by supersulfides2022

    • Author(s)
      Tomohiro Sawa
    • Organizer
      The 15th Korea-Japan International Symposium on Microbiology
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Regulation of innate immune responses by reactive sulfur species2022

    • Author(s)
      Tomohiro Sawa
    • Organizer
      The 12th International Conference on the Biology, Chemistry and Therapeutic Applications of Nitric Oxide
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Regulation of innate immune responses by reactive sulfur species2022

    • Author(s)
      Tomohiro Sawa
    • Organizer
      10th Biennial Conference of the Society for Free Radical Research Asia
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited

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Published: 2021-10-22   Modified: 2025-06-20  

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