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Elucidation of the mechanisms regulating the vascular tone and proliferation : Development of a novel technique to introduce protein into the intact cells and its applications

Research Project

Project/Area Number 15590758
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Circulatory organs internal medicine
Research InstitutionKYUSHU UNIVERSITY

Principal Investigator

HIRANO Katsuya  Kyushu University, Graduate School of Medical Sciences, Assistant Professor, 大学院・医学研究院, 講師 (80291516)

Project Period (FY) 2003 – 2004
Project Status Completed (Fiscal Year 2004)
Budget Amount *help
¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 2004: ¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 2003: ¥1,800,000 (Direct Cost: ¥1,800,000)
Keywordsprotein transduction / vascular smooth muscle cells / vascular endothelial cells / nitric oxide / thrombin receptor / apoptosis / cell cycle / vascular tone / タンパク質 / 血管 / 平滑筋 / 内皮細胞 / 収縮 / 組換えDNA / 脱リン酸化酵素
Research Abstract

By using a cell-penetrating peptide, which is found in the human immunodeficiency viral transcription factor Tat and is composed of 11 amino acids, I have developed a novel technique to rapidly, reversibly and quantitatively introduce proteins into the vascular tissues and cells. The cargo protein to be introduced into the cells was prepared as a recombinant protein fused to the cell-penetrating peptide using a bacterial expression system. I have developed the expression vectors. Using this new technique of the protein transduction, I have made the following contribution to the vascular biology.
(1)I have for the first time found that the N-terminal region of the regulatory subunit of myosin phosphatase, MYPT1, plays a physiological role in regulating the vascular tone in an intact artery.
(2)By introducing the inhibitor proteins of the small G proteins RhoA and Rac1 in a time-specific manner, I have for the first time found that the activity of Rho proteins is required at the late G1 ph … More ase for the cell cycle to progress from the G1 phase to the S phase in the vascular endothelial cells.
(3)I found that the 24 h treatment of the arterial tissue with the RhoA inhibitor protein attenuated the arterial contractility in a manner dependent on the endothelial NO production. However, Rac1 inhibitor protein had no such effect. This finding thus for the first time present direct evidence that RhoA plays a physiological role in the production of NO in in situ endothelial cells.
(4)I found that the 24 h treatment of the cultured smooth muscle cells with the Rac1 inhibitor protein reduced the cell surface expression of the thrombin receptor PAR1. However, the RhoA inhibitor protein had no such effect. This observation thus suggests that Rac1 plays a critical role in determining the expression of PAR1 in the vascular smooth musclecells.
(5)Estrogen inhibited the TNF-α-induced apoptosis in the vascular endothelial cells. However, the introduction of the dominant negative mutant of Akt inhibited the anti-apoptotic effect of estrogen. This finding thus provide the first direct evidence that Akt plays a critical role in the anti-apoptotic signaling elicited by estrogen in the vascular endothelial cells. Less

Report

(3 results)
  • 2004 Annual Research Report   Final Research Report Summary
  • 2003 Annual Research Report
  • Research Products

    (21 results)

All 2004 2003 Other

All Journal Article (15 results) Publications (6 results)

  • [Journal Article] Transduction of the N-terminal fragments of MYPT1 enhances myofilament Ca^<2+> sensitivity in an intact coronary artery2004

    • Author(s)
      Hirano K, Derkach DN, Hirano M, Nishimura J, Takahashi S, Kanaide H
    • Journal Title

      Arteriosclerosis, Thrombosis and Vascular Biology 24

      Pages: 464-469

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Annual Research Report 2004 Final Research Report Summary
  • [Journal Article] A critical period requiring Rho proteins for cell cycle progression uncovered by reversible protein transduction in endothelial cells2004

    • Author(s)
      Hirano K, Hirano M, Nishimura J, Kanaide H
    • Journal Title

      FEBS Letters 570

      Pages: 149-154

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Annual Research Report 2004 Final Research Report Summary
  • [Journal Article] Akt plays a central role in the anti-apoptotic effect of estrogen in endothelial cells2004

    • Author(s)
      Koga M, Hirano K, Hirano M, Nishimura J, Kanaide H
    • Journal Title

      Biochemical and Biophysical Research Communications 324

      Pages: 321-325

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Annual Research Report 2004 Final Research Report Summary
  • [Journal Article] Transduction of the N-terminal fragments of MYPT1 enhances myofilament Ca^<2+> sensitivity in an intact coronary artery2004

    • Author(s)
      Hirano K, Derkach DN, Hirano M, Nishimura J, Takahashi S, Kanaide H.
    • Journal Title

      Arteriosclerosis, Thrombosis and Vascular Biology 24

      Pages: 464-469

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] A critical period requiring Rho proteins for cell cycle progression uncovered by reversible protein transduction in endothelial cells.2004

    • Author(s)
      Hirano K, Hirano M, Nishimura J, Kanaide H.
    • Journal Title

      FEBS Letters 570

      Pages: 149-154

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Akt plays a central role in the anti-apoptotic effect of estrogen in endothelial cells2004

    • Author(s)
      Koga M, Hirano K, Hirano M, Nishimura J, Kanaide H.
    • Journal Title

      Biochemical and Biophysical Research Communications 324

      Pages: 321-325

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Facilitation of proteasomal degradation of p27^<Kip1> by N-terminal cleavage,2004

    • Author(s)
      Hirano K, Ihara E, Hirano M, Nishimura J, Nawata H, Kanaide H
    • Journal Title

      FEBS Letters 574

      Pages: 111-115

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Protein kinase network in the regulation of phosphorylation and dephosphorylation of smooth muscle myosin light chain (Review article)2003

    • Author(s)
      Hirano K, Derkach DN, Hirano M, Nishimura J, Kanaide H
    • Journal Title

      Molecular and Cellular Biochemistry 248

      Pages: 105-114

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Protein kinase network in the regulation of phosphorylation and dephosphoryla tion of smooth muscle myosin light chain (Review article)2003

    • Author(s)
      Hirano K, Derkach DN, Hirano M, Nishimura J, Kanaide H.
    • Journal Title

      Molecular and Cellular Biochemistry 248

      Pages: 105-114

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Protein kinase network in the regulation of phosphorylation and dephosphorylation of smooth muscle myosin light chain(Review article)2003

    • Author(s)
      Hirano K, Derkach DN, Hirano M, Nishimura J, Kanaide H
    • Journal Title

      Molecular and Cellular Biochemistry 248

      Pages: 105-114

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Long-term inhibition of RhoA attenuates vascular contractility by enhancing endothelial NO production in an intact rabbit mesenteric artery

    • Author(s)
      Shiga N, Hirano K, Hirano M, Nishimura J, Nawata H, Kanaide H.
    • Journal Title

      Circulation Reseaerch (In press)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Rac1 regulation of the surface expression of PAR1 and responsiveness to thrombin in vascular smooth muscle cells

    • Author(s)
      Yufu T, Hirano K, Bi D, Hirano M, Nishimura J, Iwamoto Y, Kanaide H.
    • Journal Title

      Arteriosclerosis, Thrombosis and Vascular Biology (In press)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Long-term inhibition of RhoA attenuates vascular contractility by enhancing endothelial NO production in an intact rabbit mesenteric artery.

    • Author(s)
      Shiga N, Hirano K, Hirano M, Nishimura J, Nawata H, Kanaide H.
    • Journal Title

      Circulation Research (in press)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Rac1 regulation of the surface expression of PAR1 and respon siveness to thrombin in vascular smooth muscle cells

    • Author(s)
      Yufu T, Hirano K, Bi D, Hirano M, Nishimura J, Iwamoto Y, Kanaide H.
    • Journal Title

      Arteriosclerosis, Thrombosis and Vascular Biology (in press)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Regulation of myosin phosphorylation and myofilament Ca^<2+> sensitivity in vascular smooth muscle(Review article)

    • Author(s)
      Hirano K, Hirano M, Kanaide K
    • Journal Title

      Journal of Smooth Muscle Research (in press)

    • Related Report
      2004 Annual Research Report
  • [Publications] Hirano K, Derkach DN, Hirano M, Nishimura J, Takahashi S, Kanaide H: "Transduction of the N-terminal fragments of MYPT1 enhances myofilament Ca^<2+> sensitivity in an intact coronary artery"Athersclerosis Thromb Vasc Biol. (印刷中). (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] Hirano K, Derkach DN, Hirano M, Nishimura J, Kanaide H: "Protein kinase network in the regulation of phosphorylation and dephosphorylation of smooth muscle myosin light chain"Mol Cell Biochem. 248. 105-114 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Hirano K, Zeng Y, Hirano M, Nishimura J, Kanaide H: "Sequence requirement for nuclear localization and growth inhibition of p27^<KiP1R> a degradation-resistant isoform of p27^<KiP1>"J Cell Biochem. 89. 191-202 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Maeda Y, Hirano K, Nishimura J, Sasaki T, Kanaide H: "Rho-kinase inhibitor inhibits both myosin phosphorylation-dependent and -independent enhancement of myofilament Ca^<2+> sensitivity in bovine middle cerebral artery"Br J Pharmacol. 140. 871-880 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Nakayama T, Hirano K, Shintani Y, Nishimura J, Nakatsuka A, Kuga H, Takahashi S, Kanaide H: "Unproductive cleavage and inactivation of protease-activated receptor-1 by trypsin in vascular endotheial cells"Br J Pharmacol. 138. 121-130 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Eto W, Hirano K, Hirano M, Nishimura J, Kanaide H: "Intracellular alkalinization induces Ca^<2+> influx via non-voltage-operated Ca^<2+> channels in the rat aortic smooth muscle cells"Cell Calcium. 34. 477-484 (2003)

    • Related Report
      2003 Annual Research Report

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Published: 2003-04-01   Modified: 2016-04-21  

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