• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Homeostasis of the epidermal cells and its dysfunction in epidermolysis bullosa

Research Project

Project/Area Number 19H03449
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 49030:Experimental pathology-related
Research InstitutionGunma University

Principal Investigator

Izumi Tetsuro  群馬大学, 生体調節研究所, 教授 (00212952)

Co-Investigator(Kenkyū-buntansha) 松永 耕一  群馬大学, 生体調節研究所, 助教 (20570162)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2021: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2020: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2019: ¥7,410,000 (Direct Cost: ¥5,700,000、Indirect Cost: ¥1,710,000)
Keywords表皮細胞 / 細胞接着 / 細胞内膜輸送 / Rabタンパク質 / 表皮水疱症 / 細胞移動 / Rab27 / インテグリン / タンパク質複合体 / 表皮損傷 / ヘミデスモソーム
Outline of Research at the Start

表皮水疱症とは、先天的に皮膚が脆弱で、生後早期から、わずかな外力で全身に水疱、びらんの形成が起こる遺伝性疾患である。重症化すると日常生活が著しく制限され、致死となることもあるが、未だに対症療法しかない難病である。表皮水疱症の多くは、皮膚細胞を形作る構造タンパク質の異常によって起きるが、最近、それとは全く別のタイプで、皮膚細胞内の内部環境を保つ分子の異常によるものがあることが判明した。本研究では、この分子の機能を解明して、皮膚細胞を正常に保つ仕組みと、その破綻によって起こる表皮水疱症の病態を明らかにする。

Outline of Final Research Achievements

Genetic mutation of exophilin-5, one of the Rab27 effectors, is known to cause epidermolysis bullosa in humans. However, the molecular mechanism for the function and action mechanism of exophilin-8 in epidermal cells is largely unknown. In this study, we investigated the pathophysiological function of exophilin-8 by exploring interacting proteins, intracellular localization, and phenotypes in knockdown/knockout cells. As a result, we obtained evidence that exophilin-8 is involved in cell adhesion and migration via interactions with proteins constituting hemidesmosomes, desmosomes, and adherence junctions.

Academic Significance and Societal Importance of the Research Achievements

本研究によって、体の外表を覆う表皮細胞の恒常性を保つ仕組みと共に、その破綻によって起こる、皮膚が脆弱でわずかな外力で全身に水疱、びらんの形成が起こり、未だに対症療法しかない遺伝性疾患の表皮水疱症に関する病態生理に関して、その分子機序の一端が明らかとなった。

Report

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

    (32 results)

All 2022 2021 2020 2019 Other

All Journal Article (9 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 7 results,  Open Access: 5 results) Presentation (22 results) (of which Int'l Joint Research: 6 results,  Invited: 2 results) Remarks (1 results)

  • [Journal Article] Munc13b stimulus-dependently accumulates on granuphilin-mediated, docked granules prior to fusion2022

    • Author(s)
      Mizuno K, Izumi T.
    • Journal Title

      Cell Structure and Function

      Volume: 47 Issue: 1 Pages: 31-41

    • DOI

      10.1247/csf.22005

    • ISSN
      0386-7196, 1347-3700
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] In vivo Roles of Rab27 and Its Effectors in Exocytosis2021

    • Author(s)
      Izumi T.
    • Journal Title

      Cell Struct Funct

      Volume: 46 Issue: 2 Pages: 79-94

    • DOI

      10.1247/csf.21043

    • NAID

      130008114143

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Berberine is an insulin secretagogue targeting the KCNH6 potassium channel2021

    • Author(s)
      Zhao MM, Lu J, Li S, Wang H, Cao X, Li Q, Shi TT, Matsunaga K, Chen C, Huang H, Izumi T, Yang JK.
    • Journal Title

      Nat Commun

      Volume: 12 Issue: 1 Pages: 6342-6342

    • DOI

      10.1038/s41467-021-26635-8

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Melanophilin accelerates insulin granule fusion without predocking to the plasma membrane.2020

    • Author(s)
      Wang H, Mizuno K, Takahashi N, Kobayashi E, Shirakawa J, Terauchi Y, Kasai H, Okunishi K, Izumi T.
    • Journal Title

      Diabetes

      Volume: 69 Issue: 12 Pages: 2655-2666

    • DOI

      10.2337/db20-0069

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Exophilin-5 regulates allergic airway inflammation by controlling IL-33-mediated Th2 responses2020

    • Author(s)
      Katsuhide Okunishi, Hao Wang, Maho Suzukawa, Ray Ishizaki, Eri Kobayashi, Miho Kihara, Takaya Abe, Jun-ichi Miyazaki, Masafumi Horie, Akira Saito, Hirohisa Saito, Susumu Nakae, Tetsuro Izumi
    • Journal Title

      Journal of Clinical Investigation

      Volume: - Issue: 7 Pages: 3919-3935

    • DOI

      10.1172/jci127839

    • NAID

      40022605127

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] ALK7の肥満マウス白色脂肪織における生理的・病態生理的意義2020

    • Author(s)
      奥西 勝秀、泉 哲郎
    • Journal Title

      糖尿病・内分泌代謝科

      Volume: 51 Pages: 298-303

    • Related Report
      2020 Annual Research Report
  • [Journal Article] Exophilin-5 regulates allergic airway inflammation by controlling IL-33-mediated Th2 responses.2020

    • Author(s)
      Okunishi K, Wang H, Suzukawa M, Ishizaki R, Kobayashi E, Kihara M, Abe T, Miyazaki J, Horie M, Saito A, Saito H, Nakae S, and Izumi T.
    • Journal Title

      J. Clin. Invest.

      Volume: in press

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Coixol amplifies glucose-stimulated insulin secretion via cAMP mediated signaling pathway.2019

    • Author(s)
      Hameed A, Hafizur RM, Kahn MI, Jawed A, Wang H, Zhao M, Matsunaga K, Izumi T, Siddiqui S, Khan F, Adhikari A, and Sharma KR.
    • Journal Title

      Eur. J. Pharmacol.

      Volume: 858 Pages: 172514-172514

    • DOI

      10.1016/j.ejphar.2019.172514

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] インスリン、脂肪組織マクロファージを介する新奇脂肪蓄積機構2019

    • Author(s)
      泉 哲郎
    • Journal Title

      肥満研究

      Volume: 25 Pages: 128-133

    • Related Report
      2019 Annual Research Report
  • [Presentation] 抗ALK7中和抗体は肥満マウスにおける代謝環境を改善する2022

    • Author(s)
      趙 敏、歩 云、奥西 勝秀、泉 哲郎
    • Organizer
      第65回日本糖尿病学会年次学術集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Munc13によるインスリン顆粒の開口放出制御2022

    • Author(s)
      水野 広一、泉 哲郎
    • Organizer
      第65回日本糖尿病学会年次学術集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 複数のRab27エフェクターExophilinsが制御する、インスリン顆粒開口放出機構2022

    • Author(s)
      趙 クンリ、松永 耕一、水野 広一、王 昊、奥西 勝秀、泉 哲郎
    • Organizer
      第65回日本糖尿病学会年次学術集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 肥満マウスにおける抗ALK7中和抗体の効果の検討2021

    • Author(s)
      趙 敏、奥西 勝秀、泉 哲郎
    • Organizer
      第68回北関東医学会総会
    • Related Report
      2021 Annual Research Report
  • [Presentation] インスリン分泌顆粒の開口放出機序(特別シンポジウム2「インスリン発見100周年企画:ホルモンとしてのインスリン1」)2021

    • Author(s)
      泉 哲郎
    • Organizer
      第94回日本内分泌学会学術総会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] ALK-7: a validated target for the treatment of obesity2020

    • Author(s)
      Yun Bu, Min Zhao, Maureen Fredericks, Marishka Cannell, Yossi Dagon, Connor Emdin, Katsuhide Okunishi, Hao Wang, Dianne Sako, Roselyne Castonguay, Rajasekhar N.V.S. Suragani, Sekar Kathiresan, Asya Grinberg, John Knopf, R. Scott Pearsall, Ravindra Kumar, and Tetsuro Izumi
    • Organizer
      ADA’s 80th Scientific Sessions
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Rab27エフェクター蛋白質メラノフィリンは、細胞膜にドッキングしていないインスリン顆粒からの開口放出を促進させる2020

    • Author(s)
      王 昊、水野 広一、奥西 勝秀、泉 哲郎
    • Organizer
      第63回日本糖尿病学会年次学術集会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Exophilin-5 regulates IL-33-mediated Th2 responses2020

    • Author(s)
      Katsuhide Okunishi, Hao Wang, Maho Suzukawa, Ray Ishizaki, Susumu Nakae, and Tetsuro Izumi
    • Organizer
      The 15th International Symposium of the Institute Network for Biomedical Science 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ALK7中和抗体が肥満マウスの白色脂肪組織に及ぼす効果の検討2020

    • Author(s)
      奥西 勝秀、趙 敏、歩 云、泉 哲郎
    • Organizer
      第34回日本糖尿病・肥満動物学会年次学術集会
    • Related Report
      2019 Annual Research Report
  • [Presentation] メラノフィリンは開放型シンタキシン-4との結合を介して細胞膜ドッキングを迂回するインスリン開口放出を制御する2020

    • Author(s)
      水野 広一、王 昊、奥西 勝秀、泉 哲郎
    • Organizer
      第34回日本糖尿病・肥満動物学会年次学術集会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Rab27エフェクターexophilin-5のアレルギー性気道炎症における新奇の役割の解明2019

    • Author(s)
      奥西 勝秀、王 昊、泉 哲郎
    • Organizer
      第56回日本臨床分子医学会
    • Related Report
      2019 Annual Research Report
  • [Presentation] リポタンパク質の分泌を制御するSFT-4/Surf4 ファミリータンパク質の発見とその機能解析2019

    • Author(s)
      三枝 慶子、佐藤 美由紀、諸岡 信克、原 太一、松永 耕一、泉 哲郎、佐藤 健
    • Organizer
      第92回日本内分泌学会学術総会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Coixol amplifies glucose stimulated insulin secretion through cAMP-PKA signaling cascade-independent of K-ATP Channels.2019

    • Author(s)
      Abdul Hameed, Rahman M Hafizur, M Israr Khan, Hao Wang, Miaomiao Zhao, Kohichi Matsunaga, Tetsuro Izumi, Sonia Siddiqui, Faisal Khan, Achyut Adhikari, and Khaga Raj Sharma.
    • Organizer
      The 11th Scientific Meeting of the Asian Association for the Study of Diabetes.
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 脂肪蓄積における白色脂肪織マクロファージの役割2019

    • Author(s)
      奥西 勝秀、歩 云、泉 哲郎
    • Organizer
      第62回日本糖尿病学会年次学術集会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Hymecromone potentiates glucose-stimulated insulin secretion through cAMP-PKA signaling pathway.2019

    • Author(s)
      Rahman M Hafizur, M Israr Khan, Abdul Hameed, Kiran Maryam, Huma Aslam Bhatti, Munneb Ali, Zaheer-UI, Faisal Khan, Ghulam Abbas, Hao Wang, Kohichi Matsunaga, and Tetsuro Izumi
    • Organizer
      第62回日本糖尿病学会年次学術集会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Rab27エフェクターexophilin-5のアレルギー反応における役割2019

    • Author(s)
      奥西 勝秀、王 昊、泉 哲郎
    • Organizer
      第68回日本アレルギー学会学術大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Exocytosis of insulin granules captured within the actin cortex.2019

    • Author(s)
      Tetsuro Izumi
    • Organizer
      BDI Diabetes Forum
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Melanophilin accelerates insulin granule fusion without stable docking to the plasma membrane via interaction with myosin-Va and syntaxin-4.2019

    • Author(s)
      Tetsuro Izumi, Kouichi Mizuno, Katsuhide Okunishi, and Hao Wang.
    • Organizer
      The 55th Annual Meeting of the EASD
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ALK7中和抗体の投与は肥満マウスの脂肪重量を著減させる2019

    • Author(s)
      奥西 勝秀、歩 云、趙 敏、泉 哲郎
    • Organizer
      第40回日本肥満学会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Exploring the insulin secretory mechanisms of hymecromone and eupatorin in mice islets.2019

    • Author(s)
      Rahman M Hafizur, Abdul Hameed, M Israr Khan, Kiran Maryam, Muneeb Ali, Za-heer Ul-Haq, Hao Wang, Miaomiao Zhao, Kohichi Matsunaga, Tetsuro Izumi, Achyut Adhi-kari, Huma Aslam Bhatti.
    • Organizer
      The 7th International Symposium-cum-Training Course on Molecular Medicine and Drug Research, Karachi, Pakistan
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ALK7中和抗体による脂肪減量効果の検討2019

    • Author(s)
      趙 敏、歩 云、奥西 勝秀、泉 哲郎
    • Organizer
      第5回生体調節研究所内分泌代謝シンポジウム
    • Related Report
      2019 Annual Research Report
  • [Presentation] A novel regulatory role of the Rab27 effector exophilin5 in allergic airway inflammation.2019

    • Author(s)
      Katsuhide Okunishi, Hao Wang, Maho Suzukawa, Susumu Nakae, and Tetsuro Izumi
    • Organizer
      第48回日本免疫学会
    • Related Report
      2019 Annual Research Report
  • [Remarks] 遺伝生化学分野 泉研究室

    • URL

      http://molend.showa.gunma-u.ac.jp/

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report 2019 Annual Research Report

URL: 

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

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi