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Functional coupling between proteins related to a novel triggered pathway for insulin secretion via TRPM2 in pancreatic beta-cells.

Research Project

Project/Area Number 15K09396
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Metabolomics
Research InstitutionJichi Medical University

Principal Investigator

KAKEI Masafumi  自治医科大学, 医学部, 客員教授 (90214270)

Project Period (FY) 2015-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2015: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywordsインスリン分泌 / TRPM2チャネル / KATPチャネル / 膵β細胞 / 背景電流 / TRPM2 / イオンチャネル / 膵ラ氏島 / TRPM2 / グレリン
Outline of Final Research Achievements

It has long been believed that the KATP channel plays an important role in insulin secretion evoked by glucose elevation at interstitial space. In the present study we found TRPM2 channel is related more importantly to insulin secretion triggered by glucose as a mechanism other than the above channel. TRPM2 channel opens upon glucose metabolism but also upon GLP-1, intestinal hormone secretd after meal. These mechanisms are novel and postulated for playing major mechanism in healthy man because in these subjects glood glucose level is not increased after meal, We propose this impactful correctional hypothesis as another pathway in additon to KATP channel-dependent pathway in glucose-stimulated insulin secretion.

Academic Significance and Societal Importance of the Research Achievements

従来考えられていたインスリン分泌機構はKATPチャネル遺族性の機序で、このチャネルの発見(1984年)以来信じられていた。本研究はこの機序に修正を求めるものであり、特に健常者においての修正が重要である。また、今後KATPチャネルの生理的意義はむしろ、肥満誘発の機序として注目されることと思われる。このように生理的意義におけるTRPM2チャネルの重要性と病態的意義としてのKATPチャネルの重要性が区別して議論されることとなると、新たな治療薬の開発にも結び付くこととなり、その社会的意義は大きい。

Report

(5 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Research Products

    (18 results)

All 2019 2018 2017 2016 2015

All Journal Article (9 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 9 results,  Open Access: 7 results,  Acknowledgement Compliant: 4 results) Presentation (9 results) (of which Invited: 1 results)

  • [Journal Article] ELKS/Voltage-dependent Ca2+ channel-β Subunit Module Regulates Polarized Ca2+ Influx in Pancreatic β-Cells.2019

    • Author(s)
      Ohara-Imaizumi, M., Aoyagi, K., Yamauchi, H., Yoshida, M., Mori, M.X., Hida, Y., Tran, H.N., Ohkura, M., Abe, M., Akimoto, Y., Nakamichi, Y., Nishiwaki, C., Kawakami, H., Hara, K., Sakimura, K., Nagamatsu, S., Mori, Y., Nakai, J., Kakei, M., and Ohtsuka, T.
    • Journal Title

      Cell Reports

      Volume: 26 Issue: 5 Pages: 1213-1226

    • DOI

      10.1016/j.celrep.2018.12.106

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] KATP/TRPチャネルの協調的インスリン分泌調節、破綻と病態2018

    • Author(s)
      加計正文
    • Journal Title

      心電図

      Volume: 38 Pages: 142-147

    • NAID

      130007553671

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Endogenous α2A-adrenoceptor-operated sympathoadrenergic tones attenuate insulin secretion via cAMP/TRPM2 signaling.2017

    • Author(s)
      Ito K, Dezaki K, Yoshida M, Yamada H, Miura R, Rita RS, Ookawara S, Tabei K, Kawakami M, Hara K, Morishita Y, Yada T, Kakei M
    • Journal Title

      Diabetes

      Volume: 66(3) Issue: 3 Pages: 699-709

    • DOI

      10.2337/db16-1166

    • NAID

      40021363366

    • Related Report
      2017 Research-status Report 2016 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Glucose and GTP-binding protein-coupled receptor cooperatively regulate transient receptor potential-channels to stimulate insulin secretion [Review]2016

    • Author(s)
      Kakei M, Yoshida M, Dezaki K, Ito K, Yamada H, Funazaki S, Kawakami M, Sugawara H, and Yada T
    • Journal Title

      Endocrine Journal

      Volume: 63 Issue: 10 Pages: 867-876

    • DOI

      10.1507/endocrj.EJ16-0262

    • NAID

      130005267891

    • ISSN
      0918-8959, 1348-4540
    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] The beta-cell GHSR and downstream cAMP/TRPM2 signaling account for insulinostatic and glycemic effects of ghrelin.2015

    • Author(s)
      Kurashina T, Dezaki K, Yoshida M, Sukma Rita R, Ito K, Taguchi M, Miura R, Tominaga M, Ishibashi S, Kakei M, Yada T
    • Journal Title

      Sci Rep

      Volume: 5 Issue: 1 Pages: 1-13

    • DOI

      10.1038/srep14041

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Partial Blockade of Kv2.1 Channel Potentiates GLP-1's Insulinotropic Effects in Islets and Reduces Its Dose Required for Improving Glucose Tolerance in Type 2 Diabetic Male Mice.2015

    • Author(s)
      Sukma Rita, R., K. Dezaki, T. Kurashina, M. Kakei, and T. Yada,
    • Journal Title

      Endocrinology.

      Volume: Endocrinology. 1(1): Issue: 1 Pages: 114-123

    • DOI

      10.1210/en.2014-1728

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Arcuate Na+,K+-ATPase senses systemic energy states and regulates feeding behavior through glucose-inhibited neurons.2015

    • Author(s)
      Kurita H, Xu KY, Maejima Y, Nakata M, Dezaki K, Santoso P, Yang Y, Arai T, Gantulga D, Muroya S, Lefor AK, Kakei M, Watanabe E, Yada T.
    • Journal Title

      Am J Physiol Endocrinol Metab.

      Volume: 309 Issue: 4 Pages: 320-333

    • DOI

      10.1152/ajpendo.00446.2014

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Peripheral oxytocin activates vagal afferent neurons to suppress feeding in normal and leptin-resistant mice: a route for ameliorating hyperphagia and obesity.2015

    • Author(s)
      Iwasaki, Y., Y. Maejima, S. Suyama, M. Yoshida, T. Arai, K. Katsurada, P. Kumari, H. Nakabayashi, M. Kakei, and T. Yada,
    • Journal Title

      Am J Physiol Regul Integr Comp Physiol.

      Volume: 308 Issue: 5 Pages: R360-R369

    • DOI

      10.1152/ajpregu.00344.2014

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Circulating betatrophin is elevated in patients with type 1 and type 2 diabetes2015

    • Author(s)
      Yamada H, Saito T, Aoki A, Asano T, Yoshida M, Ikoma A, Kusaka I, Toyoshima H, Kakei M, Ishikawa S E
    • Journal Title

      Endocrine Journal

      Volume: 62 Issue: 5 Pages: 417-421

    • DOI

      10.1507/endocrj.EJ14-0525

    • NAID

      130005071800

    • ISSN
      0918-8959, 1348-4540
    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] アクティブゾーンタンパク質ELKSのインスリン分泌における役割2018

    • Author(s)
      今泉 美佳1, 青柳 共太1, 吉田 昌史2, 飛田 耶馬人3, 大倉 正道4,5, 山内 肇3, 﨑村 建司6, 中井 淳一4,5, 加計 正文2, 永松 信哉1, 大塚 稔久3
    • Organizer
      第61回日本糖尿病学会学術集会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 膵β細胞GPR40シグナルはPLC-PKC-TrpC経路を介してインスリン分泌を増強する2018

    • Author(s)
      山田 穂高1, 船崎 俊介1, 吉田 昌史1, 伊藤 聖学2, 出崎 克也3, 川上 正舒4, 矢田 俊彦3, 石川 三衛5, 加計 正文1, 原 一雄1
    • Organizer
      第61回日本糖尿病学会学術集会
    • Related Report
      2018 Annual Research Report
  • [Presentation] TRPM2チャネルの膜電位特性の数理モデル解析2017

    • Author(s)
      藤原 寛太郎, 安東 弘泰, 池口 徹, 吉田 昌史, 加計 正文
    • Organizer
      第60回日本糖尿病学会学術集会
    • Related Report
      2017 Research-status Report
  • [Presentation] 生理学的低濃度のアドレナリンはcAMP/TRPM経路を介してインスリン分泌を抑制する2017

    • Author(s)
      伊藤 聖学, 出崎 克也, 吉田 昌史, 山田 穂高, 三浦 李菜, 大河原 晋, 田部井 薫, 川上 正舒, 原 一雄, 森下 義幸, 矢田 俊彦, 加計 正文
    • Organizer
      第60回日本糖尿病学会学術集会
    • Related Report
      2017 Research-status Report
  • [Presentation] 膵β細胞における脂肪酸受容体GPR40を介する新規インスリン分泌メカニズム2016

    • Author(s)
      山田 穂高, 吉田 昌史, 伊藤 聖学, 他
    • Organizer
      第59回日本糖尿病学会年次学術集会
    • Place of Presentation
      京都
    • Year and Date
      2016-05-19
    • Related Report
      2016 Research-status Report
  • [Presentation] アドレナリンによるβ細胞背景電流抑制によるインスリン分泌抑制作用2016

    • Author(s)
      伊藤 聖学, 吉田 昌史, 山田 穂高, 他
    • Organizer
      第59回日本糖尿病学会年次学術集会
    • Place of Presentation
      京都
    • Year and Date
      2016-05-19
    • Related Report
      2016 Research-status Report
  • [Presentation] グレリンのインスリン分泌・糖代謝作用における膵β細胞 vs 全身GHS-Rの役割2016

    • Author(s)
      出崎 克也, 倉科 智行, 吉田 昌史, 他
    • Organizer
      第59回日本糖尿病学会年次学術集会
    • Place of Presentation
      京都
    • Related Report
      2016 Research-status Report
  • [Presentation] グレリンのcAMP-EPAC-Trpm2経路に及ぼす影響の検討2016

    • Author(s)
      吉田 昌史, 出崎 克也, 伊藤 聖学, 他
    • Organizer
      第59回日本糖尿病学会年次学術集会
    • Place of Presentation
      京都
    • Related Report
      2016 Research-status Report
  • [Presentation] 新規ブドウ糖刺激インスリン分泌惹起経路としてのTrpm22015

    • Author(s)
      吉田昌史,出崎克也,中田正範,内田邦敏,伊藤聖学,山田穂高,富永真琴,川上正舒,矢田俊彦,加計正文
    • Organizer
      第58回日本糖尿病学会年次学術集会
    • Place of Presentation
      下関
    • Year and Date
      2015-05-21
    • Related Report
      2015 Research-status Report
    • Invited

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Published: 2015-04-16   Modified: 2020-03-30  

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