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THE PHENOTYPIC TRANSFORMATION AND THE EXPRESSION OF TRANSCRIPTION FACTORS IN GLOMERULAR EPITHELIAL CELLS IN GLOMERULAR DISEASES

Research Project

Project/Area Number 12671019
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Kidney internal medicine
Research InstitutionTOHOKU UNIVERSITY

Principal Investigator

OOTAKA Tetsuya  DEPARTMENT OF MEDICAL TECHNOLOGY, COLLEGE OF MEDICAL SCIENCES, TOHOKU UNIVERSITY, 医療技術短期大学部, 助教授 (70271921)

Project Period (FY) 2000 – 2002
Project Status Completed (Fiscal Year 2002)
Budget Amount *help
¥2,700,000 (Direct Cost: ¥2,700,000)
Fiscal Year 2002: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2001: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2000: ¥1,100,000 (Direct Cost: ¥1,100,000)
Keywordsfocal segmental glomerulosclerosis / crescentic glomerulonephritis / glomerular epithelial cells / transcription factors / cytokeatin / 膜性増殖性糸球体腎炎 / IgA腎症 / 紫斑病性腎炎 / WT1 / マクロファージ / メサンギウム細胞 / 形質転換 / 細胞周期調節蛋白
Research Abstract

WT1 and Pax2 are transcription factors involved in kidney development and phenotypic regulation of glomerular epithelial cells. In primary focal segmental glomerulosclerosis (FSGS) and crescentic glomerulonephritis (CrGN) the alteration of the glomerular epithelial cells is important for the development of the cellular lesion (CL) or crescent (C). To investigate the contribution of WT1 and Pax2 to these lesions, an immunohistological study on the expression of WT1, Pax2 and cytokeratin (CK) was performed using renal biopsy specimens from 36 cases of FSGS and 45 cases of CrGN.
In FSGS, the expression of WT1 was decreased in the CL compared with unaffected podocytes but Pax2 and were expressed significantly in the CL and also in the cells morphologically recognized as podocytes in cases with CL. This results suggested that re-expression of Pax2 resulting in phenotypic change of podocytes to a different epithelial form is important of the CL in primary FSGS.
In CrGN, the apparent expression of Pax2 and weak expression of WT1 together with CK expression was observed in celluar crescent (CC). The expression of these proteins was rapidly decreased in fibrocelluar (FCC) ad fibrous cescents(FC). This result suggested that expression of Pax2 and phenotypic change is involved in the proliferation of epithelial cells resulting in crescent formation though the origin of cellular component of crescents is still unclear.

Report

(4 results)
  • 2002 Annual Research Report   Final Research Report Summary
  • 2001 Annual Research Report
  • 2000 Annual Research Report
  • Research Products

    (18 results)

All Other

All Publications (18 results)

  • [Publications] Ohtaka A., Sato T., Qotala T., Sato H., Saito T., Soma J., Ito S.: "Significance of early phenotypical change of podocyte as detected by Pax2 in primary focal segmental glomerulosclerosis (FSGS)"Journal of American Society of Nephrology. Vol.11. 549A-550A (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Kimura T., Ootaka T., Ohtaka A., Sato H., Ito S: "The expression of cytokeratin polypeptides, WT1 and Pax2 in human crescentic glomerulonephritis"Journal of American Society of Nephrology. Vol.12. 110A-110A (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Ootaka T., Sato H., Sato T., Ito S: "Intracapillary expression of transcription factor WT1 in proliferative glomerulonephritis"Journal of American Society of Nephrology. Vol.13. 469A-469A (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Ohtaka A., Sato T., Ootaka T., Sato H., Saito T., Soma J., Ito S.: "Significance of the early phenotypic change of podocyte as detected by Pax2 in primary focal segmental glomerulosclerosis (FSGS)"American Journal of Kidney Diseases. Vol.39. 475-486 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Ohtaka A., Ootaka T., Sato H., Ito S.: "Phenotypic change of glomerular podocytes in primary focal segmental glomerulosclerosis"Nephrology Dialysis Transplantation. Vol.17(suppl 9). 11-15 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Ohtaka A., Sato T., Ootala T., Sato H., Saito T., Soma J., Ito A.: "Significance of early phenotypical change of podocyte as detected by Pax2 in primary focal segmental glomerulosclerosis (FSGS)"Journal of American Society of Nephrology. Vol,11. 549A-550A (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Kimura T., Ootaka T., Ohtaka A., Sato H., Ito S.: "The expression of cytokeratin polypeptides, WT1 and Pax2 in human crescentic glomerulonephritis"Journal of American Society of Nephrology. Vol.12. P110A-110A (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Ootaka T., Sato H., Sato T., Ito S.: "Intracapillary expression of transcription factor WT1 in proliferative glomerulonephritis"Journal of American Society of Nephrology. Vol.13. 469A-P69A (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Ohtaka A., Sato T., Ootaka T., Sato H., Saito T., Some J., Ito S.: "Significance of the early phenotypic change of podocyte as detected by Pax2 in primary focal segmental glomerulosclerosis (FSGS)"American Journal of Kidney Diseases. Vol.39. 475-486 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Ohtaka A., Ootaka T., Sato H., Ito S.: "Phenotypic change of glomerular podocytes in primary focal segmental glomerulosclerosis"Nephrology Dialysis Transplantation. Vol.17 (suppl 9). 11-15 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Ohtaka A., Ootaka T., Sato H., Ito S.: "Phenotypic change of glomerular podocytes in primary focal segmental glomerulosclerosis"Nephrology Dialysis Transplantation. Vol.17(suppl.9). 11-15 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Ootaka T., Sato H., Sato T., Ito S: "Intracapillary expression of transcription factor WT1 in proliferative glomerulonephritis"Journal of American Society of Nephrology. Vol.13. 469A-469A (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Ohtaka A., Sato T., Ootaka T., Sato H., Saito T., Soma J., Ito S.: "Significance of the early phenotypic change of podocyte as detected by Pax2 in primary focal segmental glomerulosclerosis (FSGS)"American Journal of Kidney Diseases, in press. (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] Kimura T., Ootaka T., Ohtaka A., Sato H., Ito S: "The expression of cytokeratin polypeptides, WT1 and Pax2 in human crescentic glomerulonephritis"Journal of American Society of Nephrology. Vol.11. P110A-P110A (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 木村朋由, 大高徹也, 大高亮彦, 佐藤寿伸, 小倉祥之, 佐藤 博, 伊藤貞嘉: "半月体形成性糸球体腎炎(CresGN)におけるcytokeratin subtype及びWT1,Pax2発現の検討"日本腎臓学会誌. 43巻3号. 285-285 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 大高徹也, 大高亮彦, 木村朋由, 佐藤博, 伊藤貞嘉, 佐藤寿伸, 斉藤喬雄: "各種増殖性糸球体腎炎における糸球体細胞の転写因子発現について"日本腎臓学会誌. 43巻3号. 285-285 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Ohtaka A: "Significance of early phenotypical change of podocyte as detected by Pax2 in primary focal segmental glomerulosclerosis(FSGS)"Journal of American Society of Nephrology. Vol.11. P549A-550A (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 大高亮彦: "培養糸球体上皮細胞の形質に関与する転写因子WT1及びPax2の発現解析"日本腎臓学会誌. 42巻3号. 221-221 (2000)

    • Related Report
      2000 Annual Research Report

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Published: 2000-04-01   Modified: 2016-04-21  

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