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アクアポリンの細胞内輸送・局在・機能分子メカニズムの研究

Research Project

Project/Area Number 13137203
Research Category

Grant-in-Aid for Scientific Research on Priority Areas

Allocation TypeSingle-year Grants
Review Section Biological Sciences
Research InstitutionTokyo Medical and Dental University

Principal Investigator

佐々木 成  東京医科歯科大学, 大学院・医歯学総合研究科, 教授 (60170677)

Co-Investigator(Kenkyū-buntansha) 桑原 道雄 (栗原 道雄)  東京医科歯科大学, 医学部附属病院, 助教授 (60221230)
山本 格  新潟大学, 大学院・医歯学総合研究科・腎研究施設, 教授 (30092737)
野田 裕美  東京医科歯科大学, 大学院・医歯学総合研究科, COE特別研究員 (30372436)
Project Period (FY) 2001 – 2004
Project Status Completed (Fiscal Year 2004)
Budget Amount *help
¥124,600,000 (Direct Cost: ¥124,600,000)
Fiscal Year 2004: ¥31,000,000 (Direct Cost: ¥31,000,000)
Fiscal Year 2003: ¥32,300,000 (Direct Cost: ¥32,300,000)
Fiscal Year 2002: ¥29,800,000 (Direct Cost: ¥29,800,000)
Fiscal Year 2001: ¥31,500,000 (Direct Cost: ¥31,500,000)
Keywords遺伝子 / 細胞生物学 / 生理学 / チャネル / 体内環境 / アクアポリン / 尿濃縮 / 細胞内ソーテング / チャネル病 / 水チャネル
Research Abstract

1.優性遺伝型式の腎性尿崩症をinvivoで再現するためにこの変異遺伝子を導入したトランスジェニックマウスを作成した。腎集合管でのAQP2変異蛋白の発現は量は少ないが認められ、軽度の尿濃縮力障害も認められた。さらに変異のノックインマウスを作成も行い、尿濃縮力障害が認められ解析を進めている。
2.AQP2のC末はPDZ結合配列になっているので、ここに付着するPDZ蛋白をクローニングするためにPDZ-1に対する抗体で腎髄質の発現ライブラリーをスクリーニングし、SPA-1を見つけた。SPA-1はRap1のGAPであり、GAP活性の阻害でAQP2の移動は抑制された。さらにAQP2結合蛋白としてactinを同定し、ビアコアで高結合能を確認した。
3.AQP7のノックアウトマウスが誕生した。外見、発育は正常であり、尿濃縮力と精子運動能にも異常は認められなかった。しかしAQP7ノックアウトマウスでは尿中のグリセロール排泄が増加していた。またAQP1とAQP7のダブルノックアウトも作成中である。AQP12についてもノックアウトマウス作成中である。
4.全国から腎性尿崩症の遺伝子解析を受けつけて行ない新たな変異を見つけだし、臨床症状と遺伝子変異種との対応を検討している。

Report

(4 results)
  • 2004 Annual Research Report
  • 2003 Annual Research Report
  • 2002 Annual Research Report
  • 2001 Annual Research Report
  • Research Products

    (39 results)

All 2004 Other

All Journal Article (11 results) Publications (28 results)

  • [Journal Article] Aquaporin-2 trafficking is regulated by PDZ-domain containing protein SPA-1.2004

    • Author(s)
      Noda Y et al.
    • Journal Title

      FEBS lett 569

      Pages: 139-145

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Water channel aquaporin-2 directly binds to actin.2004

    • Author(s)
      Noda Y et al.
    • Journal Title

      Biochem Biophys Res Commun 322

      Pages: 740-745

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Clinical characteristics of eight patients with congenital nephrogenic diabetes insipidus.2004

    • Author(s)
      Mizuno H et al.
    • Journal Title

      Endocrine 24

      Pages: 55-59

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Disease-causing mutant WNK4 increases paracellular chloride permeability and phosphorylates claudins.2004

    • Author(s)
      Yamauchi K et al.
    • Journal Title

      Proc Natl Acad Sci USA 101

      Pages: 4690-4694

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Aquaporin-2 is retrieved to the apical storage compartment via early endosomes and phosphatidylinositol 3-kinase-dependent pathway.2004

    • Author(s)
      Tajika Y et al.
    • Journal Title

      Endocrinology 145

      Pages: 4375-4383

    • Related Report
      2004 Annual Research Report
  • [Journal Article] ClC-3-independent, PKC-dependent activity of volume-sensitive Cl- channel in mouse ventricular cardiomyocytes.2004

    • Author(s)
      Gong WQ et al.
    • Journal Title

      Cell Physiol Biochem 14

      Pages: 213-224

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Localization of aquaporin-7 in human testis and ejaculated sperm : Possible involvement in maintenance of sperm quality.2004

    • Author(s)
      Saito K et al.
    • Journal Title

      J Urology 172

      Pages: 2073-2076

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Molecular and functional characterization of a vasotocin-sensitive aquaporin water channel in quail kidney.2004

    • Author(s)
      Yang Y et al.
    • Journal Title

      Am J Physiol 283

    • Related Report
      2004 Annual Research Report
  • [Journal Article] diabetes insipidus : update of genetic and clinical aspects.2004

    • Author(s)
      Sasaki S
    • Journal Title

      Nephrol Dial Transpl 19

      Pages: 1351-1353

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Molecular mechanism of water channel aquaporin-2 trafficking.2004

    • Author(s)
      Noda Y, Sasaki S
    • Journal Title

      J Pharmacol Sci 96

      Pages: 249-254

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Aquaporin superfamily (superaquaporins) : Expansion of aquaporins restricted to multicellular organisms.2004

    • Author(s)
      Morishita Y et al.
    • Journal Title

      J Pharmacol Sci 96

      Pages: 276-279

    • Related Report
      2004 Annual Research Report
  • [Publications] Asai T et al.: "Pathogenesis of nephrogenic diabetes insipidus by aquaporin-2 C-terminus mutations."Kidney International. 64. 2-10 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Michimata M et al.: "Reverse pharmacological effect of loop diuretics and altered rBSC1 expression in rats with lithium nephropathy."Kidney International. 63. 165-171 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Mizuno H et al.: "Successful treatment of partial nephrogenic diabetes with thiazide and desmopressin."Horm Res. 59. 297-300 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Maehara H et al.: "Expression of CLC-KB gene promoter in the mouse cochlea."Neuro Report. 14. 1571-1573 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Michimata M et al.: "Vasopressin-independent renal urinary concentration : Increased rBSC1 and enhanced countercurrent multiplication."Kidney International. 64. 933-938 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Miyakoshi M et al.: "A case of a novel mutant vasopressin receptor-dependent nephrogenic diabetes insipidus with bilateral non-obstructive hydronephrosis"Endocrine J. 50. 809-814 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Hayama A et al.: "Molecular mechanisms of Bartter syndrome caused by mutations in the BSND gene."Histochem Cell Biol. 119. 485-493 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Shimamura H et al.: "The PI3-kinase-Akt pathway promotes mesangial cell survival and inhibits apoptosis in vitro via NF-kappa B and Bad."J Am Soc Nephrol. 14. 1427-1434 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Terada Y et al.: "Expression and function of the developmental gene Wnt-4 during experimental acute renal failure in rats."J Am Soc Nephrol. 14. 1223-1233 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Yamauchi K et al.: "A disease-causing mutant WNK4 increases paracellular chloride permeability and phosphorylates claudins."Proc Natl Acad Sci USA. (in press).

    • Related Report
      2003 Annual Research Report
  • [Publications] Ishibashi K et al.: "Cloning and identification of a new member of water channel (AQP10) as an aquaglyceroporin"Biochim Biophys Acta. 1576. 335-340 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Kobayashi K et al.: "Human CLC-KB Gene Promoter Drives the EGFP Expression in the Specific Distal Nephron Segments and Inner Ear"Jam Soc Nephrol. 13(8). 1992-1998 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Lin S-H et al.: "Two Novel Aquaporin-2 Mutations Responsible for Congenital Nephrogenic Diabetes Insipidus in Chinese Families"J Clin Endocrinol Metal. 87. 2694-2700 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Liu W et al.: "Analysis of NaCl transport in thin ascending limb of Henle's loop in CLC-K1 null mice"Am J Physiol Renal Physiol. 282(3). F451-F457 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Miyasaki H et al.: "Kidney-specific chloride channel, OmClC-K, predominantly expressed in the diluting segment of freshwater-adapted tilapia kidney"Proc Nutl Acad Sci USA. 99(24). 15782-15787 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Okado T et al.: "Smad7 mediates transforming growth factor-beta-induced apoptosis in mesangial cells"Kidney International. 62. 1178-1186 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Ota T et al.: "Expression of aquaporin-1 in the peritoneal tissues : localization and regulation by hyperosmolality"Perit Dial Int. 22. 307-315 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Terada Y et al.: "Gene transfer and expression of SMAD7 using adenovirus combined with in vivo electroporation in unilateral ureteral obstruction in rats"Kidney International. 61. S94-S98 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Yoshidawa M et al.: "CLC-3 deficiency leads to phenotypes similar to human neuronal ceroid lipofuscinosis"Genes Cells. 7(6). 597-605 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Kuwahara M.: "Three families with autosomal dominant nephrogenic diabetes insipidus caused by aquaporin-2 mutations in the C-terminus"Am.J.Hum.Genet.. 69. 738-748 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Kageyama Y.: "Expression of aquaporins 7 and 8 in the developing rat testis"Andrologia. 33. 165-169 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Saito T.: "Role of aquaporin-2 gene expression in hyponatremic rats with chronic vasopressin-induced antidiuresis"Kidney Int.. 60. 1266-1276 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Uchida S.: "Isolation of a novel zinc finger repressor that regulates the kidney-specific CLC-K7 promoter"Kidney Int.. 60. 416-421 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Akizuki N.: "Impaired solute accumulation in inner medulla of Clcnk1-/-mice kidney"Am.J.Physiol.. 280. F79-F87 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Ohshiro K.: "Expression and immunolocalization of AQP6 in intercalated cells of the rat kidney collecting duct"Arch.Histol.Cytol.. 64. 329-338 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Hatakeyama S.: "Cloning of a new aquaporin (AQP10) abundantly expressed in duodenum and jejunum"Biochem.Biophys.Res.Commun.. 5;287. 814-819 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Tani T.: "Immunolocalization of aquaporin-8 in rat digestive organs and testis"Arch.Histol.Cytol.. 64(2). 159-168 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Nihei K.: "Immunolocalization of aquaporin-9 in rat hepatocytes and Leydig cells"Arch.Histol.Cytol.. 64. 81-88 (2001)

    • Related Report
      2001 Annual Research Report

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Published: 2001-04-01   Modified: 2018-03-28  

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