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Angiotensin II Type 2 (AT2) Receptor Singnal and Cardiovascular Action

Research Project

Project/Area Number 11470166
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Circulatory organs internal medicine
Research InstitutionKansai Medical University

Principal Investigator

MATSUBARA Hiroaki  Kansai University, Faculty of Engineering, Associate Professor, 医学部, 助教授 (10239072)

Project Period (FY) 1999 – 2000
Project Status Completed (Fiscal Year 2001)
Budget Amount *help
¥14,800,000 (Direct Cost: ¥14,800,000)
Fiscal Year 2000: ¥4,900,000 (Direct Cost: ¥4,900,000)
Fiscal Year 1999: ¥9,900,000 (Direct Cost: ¥9,900,000)
Keywordsangiotensin II receptor / angiotensin II AT1 receptor / angiotensin II AT2 receptor / angiotensin II type 1 receptor / angiotensin II type 2 receptor / ブラジキニン / AT1受容体 / AT2受容体
Research Abstract

Due to the discovery of nonpeptidic ligands the receptors for angiotensin (Angl II are classified into two subtypes (AT1-R and AT2-R). AT1-R. mediates most of the cardiovascular actions of Ang II. AT2-R is expressed at very high levels in the developing fetlrs. Its expression is vefy low in the cardiovascular system of the adult. The expression of AT2-R can be modulated by pathological states associated with tissue remodeling or inflaimmation. In failing hearts or neointima fonnation after vascular injury, AT2-R is re-expressed in cells proliferating in interstitial regions or neointima and exerts an inhibitory effect on Ang II-induced mitogen signals or synthesis of extracellular matrix proteins, resulting in attenuation of the tissue remodeling. An extreme form of cell growth inhibition ends in programmed cell death, and this process, which is initiated by the withdrawal of growth factors, is also enhanced by AT2-R. Cardiac myocyte- or vascular smooth muscle-specific mice that overexpress AT2-R display an inhibition of Ang II-induced chronotropic or pressor actions, suggesting the role of AT2-R on the activity of cardiac pacemaker cells and the maintenance of vascular resistance. AT2-R also activates the kinin/nitric. oxide/cGMP system in the cardiovascular and renal systems, restnlting in AT2-R-mediated cardioprotection, vasodilation and pressure natriuresis. These effects, transmitted by AT2-R, are mairily exerted by stimulation of protein tyrosine or serine/threonine phosphatases in a Gi-protein- dependent manner. The expression level of AT2-R is much higher in human hearts than in rodept hearts, and the AT2-R-mediated actions are likely enhanced, especially by clinical application of AT1-R antagonists. Thus, in this review, the regtilation of AT2-R expression, its cellular localization, its pathological role in cardiovascular and kidney ciseases, and phamlacotherapeutic effects of AT2-R stimulation are discussed.

Report

(3 results)
  • 2001 Final Research Report Summary
  • 2000 Annual Research Report
  • 1999 Annual Research Report
  • Research Products

    (33 results)

All Other

All Publications (33 results)

  • [Publications] Shibasaki Y, 他: "AngiotensinII Type I Receptor Antagonist, Losavtan, Causes Regression of Left Ventricular Hypertrophy in End-Stage・・・・・"Nephron. 90. 256-261 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Uchiyama-Tanaka Y, 他: "AngiotensinII signaling and HB-EGF shedding via metalloproteinase in glomerular mesangial cells"Kidney Int. 60. 2153-2163 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Shibasaki Y, 他: "AngiotensinII Type 2 Receptor Inhibits EGF Receptor Transactivation by Increasing Association of SHP-1・・・"Hypertension. 38. 367-372 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Matsubara H: "Renin-angiotensin system in human failing hearts : message from nonmyocyte cells to myocytes"Circ Res.. 88. 861-863 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Fujiyama S, 他: "Angiotensin ATI and AT2 Receptors Differentially Regulate Angiopoiptin 2 Expression and VEGF Expression・・・・"Circ Res.. 88. 22-29 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Matsubara H, 他: "Effect of angiotensinII type 2 receptor on tyrosine kinase Pyk 2 and c-Jun NH2-terminal kinase・・・"Biochem Biophys Res Commun. 282. 1085-1091 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Shibasaki Y, Masaki H, Nishiure T, Nishikawa M, Matsubara H, Iwasaka T..: "Angiotensii II Type 1 Receptor Antagonist, Losartan, Causes regression of Left Ventricular Hypertrophy in End-Stage Renal Disease"Nephron. 90. 256-261 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Uchiyama-Tanaka Y, Matsubara H, Nozawa Y, murasawa S, Mori Y, Kosaki A, Maruyama K, MasakiH, Shibasaki Y, Fujiyama S, Nose A, Iba O, Hasagawa T, Tateishi E, Higashiyama S, Iwasaka T.: "Angiotensin II signaling and HB-EGF shedding via metalloproteinase in glomerular mesangial cells"Kindeny Int.. 60. 2153-2163 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Shibasaki Y, Matsubara H, Yoshihisa Nozawa, Yasukiyo Mori, Hiroya Masaki, Atsushi kosaki, Yoshiaki Tsutsumi, Yoko Uchiyama, soichiro Fujiyama, Atusko Nose, Osamu Iba, Eriko Tateishi, Takamasa Hasegawa, Masatsugu Horiuchi, Clara Nahmias. Toshiji Iwaska: "Angiotensin II Type 2 Receptor Inhibits EGF Receptor Transactivation by Increasing Association of SHP-1 Tyrosine Phosphatase"Hypertension. 38. 367-372 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Matsubara H.: "Renin-angiotensin system in human failing heats : message fro nonmyocyte cells to myocytes"Circ res.. 88. 861-863 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Matsubara H, Shibasaki Y, Okigaki M, Mori Y, Masaki H, Kosaki A, Tsutsmi Y, Uchiyama Y, Fujiyama S, Nose A, Iba O, Tateishi E, Hasegawa T, Horiuchi M, Nahmias C, Iwasaka T.Fujiwyama S, Matsubara H, Mori Y, masaki H, Tsutsumi Y, Shibasaki Y, Kitabayashi I,: "Angiotensin At1 and AT2 Receptors Differentially Regulate Angiopoietin 2 Expression and VEGF Expressioin and Angigenesis by Modulating Heparin Binding EGF-Mediated EGF Receptor Transactivation"Circ Res,. 88. 22-29 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Matsubara H, Shibasaki Y, Okigaki M, Mori Y, Masaki H, Kosaki A, Tsutsmi Y, Uchiyama Y, Fujiyama S, Nose A, Iba O, Tateishi E, Hasegawa T, Horiuchi M, Nahmias C, Iwasaka T.: "Effect of angiotensin II type 2 receptor on tyrosine kinase Pyk2 and c-Jun NH2-terminal kinase via SHP-1 tyrosine phosphatase activity : evidence from vascular-targeted transgenic mice of AT2 receptor"Biochem Biophys Res Comun. 282. 1085-1091 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Matsubara H, Moriguchi Y, Mori Y, Masaki H, Tsutsumi Y, Shibasaki Y, Uchiyama-Tanaka Y, Fujiyama S, Koyama Y, Nose-Fujiwyama A, Iba S, Tateishi e, Iwasaka T.: "Transactivation of EGF receptor induced yb angiotensin II regulates fibronectin and TGF-beta gene expression via transcriptional and post-transcriptional mechanisms"Mol Cell Biochem.. 212. 187-201 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Murasawa S, Matsubara H, Mori Y, Masaki H, Tsutumi Y, Shibasaki Y, Kitabayashi I, Tanaka Y, Fujiyama S, Koyama Y Fujiyama A, Iba S, Iwasaka T.: "Angiotensin Ii initiates tyrosine kinase Pyk2-dependent signalings leading to acitivation of Rac1-mediated c-Jun NH2-terminal Kinase"J Biol Chem.. 275. 26856-26863 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Moriguchi Y, Matsubara H. Mori M, Murawasa S, Masaki H, Maruyama K, Tsutsumi Y, Shibasaki Y, Tanaka Y, Nakajima T, Oda K, Iwasaka T.: "Angiotensin II-Induced Transactivation of EGF Receptor Regulates Fibronectin and TGF-β Synthesis via Transcriptional and Post-transcriptional Mechanisms"Circ Res. 84. 1073-1084 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Tsutusmi Y, Matsubara H. Masaki H, Mori Y, Maruyama K, Murasawa S, Moriguchi Y, Shibazaki Y, Tanaka Y, takahashi H, Iwasaka T.: "Angiotensin II type 2 receptor overxpression activates the vascular kinin system and causes vasodilation"J Clin Invest.. 104. 925-935 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Shibasaki Y, Matsubara H, Mori Y, Tsutumi Y, Masaki H, Sakamoto K, Murasawa S, Maruyama K, Moriguchi Y, Tanaka Y, Inaba M, Iwasaka T.: "Differential Kinetics of Circulating Angiotensin IV and II after Treatment with Angiotensin II Type 1 Receptor Antagonist and Their Plasma levels in Patients with Chronic renal Failure"Clin Nephrol.. 51. 83-91 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Fujiyama S,Matsubara H, 他8名: "Angiotensin AT1 and AT2 Receptors Differentially Regulate Angiopoietin 2 Expression and VEGF Expression and Angiogenesis by Modulating Heparin Binding EGF-Mediated EGF Receptor Transactivation."Circ Res. 88(1). 22-29 (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] Fujiyama S,Matsubara H 他11名: "Angiotensin II initiates tyrosine kinase Pyk2-dependent signalings leading to activation of Racl-mediated c-Jun NH2-terminal kinase."J Biol Chem. 275(35). 26856-26863 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Tsutusmi Y,Matsubara H 他9名: "Angiotensin II type 2 receptor overexpression activates the vascular kinin system and causes vasodilation."J Clin Invest. 104(7). 925-935 (1999)

    • Related Report
      2000 Annual Research Report
  • [Publications] Moriguchi Y,Matsubara H 他10名: "Angiotensin II-Induced Transactivation of EGF Receptor Regulates Fibronectin and TGF-β Synthesis via Transcriptional and Post-transcriptional Mechanisms."Circ Res. 84(9). 1073-1084 (1999)

    • Related Report
      2000 Annual Research Report
  • [Publications] Matsubara H: "Pathophysiological roles of angiotensin II type2 receptor in cardiovascular and renal diseases."Circ Res (Review). 83. 1182-1191 (1998)

    • Related Report
      2000 Annual Research Report
  • [Publications] Tsutsumi Y,Matsubara H 他12名: "Angiotensin II Type 2 Receptor Is Up-Regulated in Human Heart with Interstitial Fibrosis and Cardiac Fibroblasts Are the Major Cell Type for Its Expression."Circ Res. 83(10). 1035-1046 (1998)

    • Related Report
      2000 Annual Research Report
  • [Publications] 松原弘明,長谷川隆正 他2名: "治療学 特集:高血圧レニン・アンジオテンシン系研究の現況"ライフサイエンス出版. 385-389 (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] 松原弘明,立石恵里子 他2名: "分子心血管病連載講座-アンジオテンシンの新たな展開-第5回 心不全におけるARBとACE阻害薬,また,その併用療法の可能性〜臨床編〜"先端医学社. 553-558 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Tsutsumi Y,Matsubara H 他9人: "Angiotensin II type2 receptor overexpression activates・・・"J Clin Invest. 104. 925-935 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Moriguchi Y,Matsubara H 他10人: "Angiotensin II-Induced Transactivation of EGF Receptor"Circ Res. 84. 1073-1084 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Maruyama K,Mori Y,Matsubara H 他9人: "Interleukin-1B Upregulates Cardiac Expression of・・・"J.Mol Cell Cardiol. 31. 607-617 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Matsubra H: "Pathophysiological roles of angiotensin II type 2・・・"Circ. Res. 83. 1182-1191 (1998)

    • Related Report
      1999 Annual Research Report
  • [Publications] Tsutsumi Y,Matsubara H 他12人: "Angiotensin II type Receptor Is Up-Regulated in・・・"Circ. Res. 83・10. 1035-1046 (1998)

    • Related Report
      1999 Annual Research Report
  • [Publications] Murasawa S,Matsubara H 他10人: "Role of calcium-sensitive tyrosine kinase Pyk2/CA Kss/・・・"Hypertension. 32・4. 668-675 (1998)

    • Related Report
      1999 Annual Research Report
  • [Publications] Matsubara H 他12人: "Tissue-specific expression of human angiotensin II AT1・・・"Nephror. 80・1. 25-30 (1998)

    • Related Report
      1999 Annual Research Report
  • [Publications] Murasawa S,Matsubara H 他12人: "Angiotensin II type 1 receptor-induced extracellular・・・"Circ Res. 82. 1338-1348 (1998)

    • Related Report
      1999 Annual Research Report

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Published: 1999-04-01   Modified: 2016-04-21  

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