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2018 Fiscal Year Annual Research Report

Proposal of Molecular Leverage Hypothesis with Molecular Dynamic Calculation

Research Project

Project/Area Number 17K19669
Research InstitutionTokai University

Principal Investigator

後藤 信哉  東海大学, 医学部, 教授 (50225653)

Project Period (FY) 2017-06-30 – 2019-03-31
Keywords血小板 / 膜糖蛋白GPIIb/IIIa / 心筋梗塞 / 細胞活性化 / インテグリン
Outline of Annual Research Achievements

血小板膜糖蛋白GPIIb/IIIaの細胞外ドメインを分子動力学計算の対象とした。細胞内ドメインのわずかな構造変化が細胞外ドメインの大きな構造を惹起する「分枝レバレッジ仮説」の妥当性検証のために、GPIIb/IIIaの細胞外ドメインの活性型構造と非活性型構造の遷移の可能性を検証した。
分子動力学計算には本予算にて施設内に購入したXeon Pfiおよび学外高性能コンピューターとしてOakforest-PACSを用いた。GPIIb/IIIaの活性型構造に、リガンドとしてフィブリノーゲンのドデカペプチドが結合した構造を初期構造とした。リガンドが結合した条件では2フェムト秒毎に分子動力学計算を行い安定した構造も活性型構造に近似した。「分子レバレッジ」仮説の前提となる細胞外ドメインの複数のエネルギー的安定構造を明らかにするために、ドデカペプチドを外して2フェムト秒毎の分子動力学計算を10,00,000ステップ施行した。計算の継続とともに、細胞外ドメインは、中央付近にて折れ曲り、非活性型構造に近似した形態へと変化した。2年間の研究により、GPIIb/IIIaの細胞外ドメインは、GPIbalphaとは異なり、エネルギー的に安定した構造が複数存在すること、そのエネルギー安定構造の一部は活性型構造に、一部は非活性型構造に類似していること、お互いのエネルギー的安定構造間の遷移を惹起するためのエネルギー障壁は高くないことを確認した。
細胞膜を支点、細胞内ドメインを力点、細胞外ドメインを作動点とした「分子レバレッジ」とするために、細胞膜貫通ドメインおよび細胞内ドメインの構造を、過去に公開されたNMR解析と矛盾しない構造として自作した。「分子レバレッジ」における力点、支点、作用点となるアミノ酸を明確にするための予備的研究にも成功した。

  • Research Products

    (14 results)

All 2019 2018

All Journal Article (12 results) (of which Int'l Joint Research: 6 results,  Peer Reviewed: 9 results,  Open Access: 7 results) Presentation (1 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Effect of Dapagliflozin on Heart Failure and Mortality in Type 2 Diabetes Mellitus.2019

    • Author(s)
      Kato ET, Silverman MG, Mosenzon O, Zelniker TA, Cahn A, Furtado RHM, Kuder J, Murphy SA, Bhatt DL, Leiter LA, McGuire DK, Wilding JPH, Bonaca MP, Ruff CT, Desai AS, Goto S, Johansson PA, Gause-Nilsson I, Johanson P, Langkilde AM, Raz I, Sabatine MS, Wiviott SD.
    • Journal Title

      Circulation

      Volume: in press Pages: 115-124

    • DOI

      doi: 10.1161/CIRCULATIONAHA.119.040130

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Letter by Goto and Goto Regarding Article, "Fully Automated Echocardiogram Interpretation in Clinical Practice: Feasibility and Diagnostic Accuracy"2019

    • Author(s)
      Goto S and Goto S
    • Journal Title

      Circulation

      Volume: 139 Pages: 1646-1647.

    • DOI

      10.1161/CIRCULATIONAHA.118.038451.

    • Peer Reviewed / Open Access
  • [Journal Article] Management and 1-Year Outcomes of Patients With Newly Diagnosed Atrial Fibrillation and Chronic Kidney Disease: Results From the Prospective GARFIELD - AF Registry.2019

    • Author(s)
      Goto S, Angchaisuksiri P, Bassand JP, Camm AJ, Dominguez H, Illingworth L, Gibbs H, Goldhaber SZ, Goto S, Jing ZC, Haas S, Kayani G, Koretsune Y, Lim TW, Oh S, Sawhney JPS, Turpie AGG, van Eickels M, Verheugt FWA, Kakkar AK
    • Journal Title

      J Am Heart Assoc.

      Volume: 8 Pages: e010510

    • DOI

      10.1161/JAHA.118.010510

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Artificial intelligence to predict needs for urgent revascularization from 12-leads electrocardiography in emergency patients.2019

    • Author(s)
      Goto S, Kimura M, Katsumata Y, Goto S, Kamatani T, Ichihara G, Ko S, Sasaki J, Fukuda K, Sano M1
    • Journal Title

      PLoS One.

      Volume: 14 Pages: e0210103

    • DOI

      10.1371/journal.pone.0210103. eCollection 2019.

    • Peer Reviewed
  • [Journal Article] Characteristics and Management of Patients with Venous Thromboembolism: The GARFIELD-VTE Registry.2019

    • Author(s)
      Ageno W, Haas S, Weitz JI, Goldhaber SZ, Turpie AGG, Goto S, Angchaisuksiri P, Nielsen JD, Kayani G, Pieper KS, Schellong S, Bounameaux H, Mantovani LG, Prandoni P, Kakkar AK
    • Journal Title

      Thromb Haemostasis

      Volume: 119 Pages: 319-327

    • DOI

      0.1055/s-0038-1676611

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Early Risks of Death, Stroke/Systemic Embolism, and Major Bleeding in Patients With Newly Diagnosed Atrial Fibrillation.2019

    • Author(s)
      Bassand JP, Virdone S, Goldhaber SZ, Camm AJ, Fitzmaurice DA, Fox KAA, Goto S, Haas S, Hacke W, Kayani G2, Mantovani LG10, Misselwitz F, Pieper KS2, Turpie AGG, van Eickels M, Verheugt FWA, Kakkar AK
    • Journal Title

      Circulation

      Volume: 139 Pages: 787-798

    • DOI

      10.1161/CIRCULATIONAHA.118.035012.

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Risk Profile and 1-Year Outcome of Newly Diagnosed Atrial Fibrillation in Japan - Insights From GARFIELD-AF.2018

    • Author(s)
      Koretsune Y, Etoh T, Katsuda Y, Suetsugu T, Kumeda K, Sakuma I, Eshima K, Shibuya M, Ando SI, Yokota N, Goto S, Pieper KS, Allu J, Kakkar AK
    • Journal Title

      Circ J

      Volume: 83 Pages: 67-74

    • DOI

      10.1253/circj.CJ-18-0655

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] High rate of death in patients with atrial fibrillation -Results from EORP-AF Pilot General Registry.2018

    • Author(s)
      Ayabe K and Goto S
    • Journal Title

      Int J Cardiol.

      Volume: 271 Pages: 109-110

    • DOI

      10.1016/j.ijcard.2018.06.0

    • Peer Reviewed / Open Access
  • [Journal Article] Overview of oral antithrombotic treatment in elderly patients with atrial fibrillation.2018

    • Author(s)
      Kato ET, Goto S, Giugliano RP
    • Journal Title

      Ageing Res Rev

      Volume: 49 Pages: 115-124

    • DOI

      10.1016/j.arr.2018.10.006

  • [Journal Article] Edoxaban's Journey: From East Asia to the Globe, Back to East Asia.2018

    • Author(s)
      Goto S and Goto S
    • Journal Title

      J Am Coll Cardiol.

      Volume: 72 Pages: 854-856

    • DOI

      10.1016/j.jacc.2018.05.067.

  • [Journal Article] Antithrombotic therapy use and clinical outcomes following thrombo-embolic events in patients with atrial fibrillation: insights from ARISTOTLE.2018

    • Author(s)
      Goto S, Merrill P, Wallentin L, Wojdyla DM, Hanna M, Avezum A, Easton JD, Harjola VP, Huber K, Lewis BS9
    • Journal Title

      Eur Heart J Cardiovasc Pharmacother

      Volume: 4 Pages: 75-81.

    • DOI

      10.1093/ehjcvp/pvy002.

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Validation of DAPT Score (Dual Antiplatelet Therapy) in East Asian Patients.2018

    • Author(s)
      Yabushita H, Goto S
    • Journal Title

      Circulation

      Volume: 137 Pages: 563-56

    • DOI

      10.1161/CIRCULATIONAHA.117.031785.

  • [Presentation] Biologically Validated Model of Platelet Adhesion under Blood Flow Conditions2018

    • Author(s)
      Goto S
    • Organizer
      The Scientific Committee of the Joint Meeting of ESCHM-ISB-ISCH
    • Int'l Joint Research / Invited
  • [Patent(Industrial Property Rights)] 抗血液凝固剤投薬治療における予後イベント予測2019

    • Inventor(s)
      後藤信哉、後藤信一
    • Industrial Property Rights Holder
      学校法人東海大学
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      1.特願2019-038948

URL: 

Published: 2019-12-27  

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