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The role of growth factors for neovascularization of CNS tumor

Research Project

Project/Area Number 10670177
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Human pathology
Research InstitutionTokyo Women's Medical University

Principal Investigator

SAWADA Tatsuo  Tokyo Women's Medical University, Department of pathology, Professor, 医学部, 教授 (90162544)

Co-Investigator(Kenkyū-buntansha) KATO Yoichiro  Tokyo Women's Medical University, Department of pathology, Research associate, 医学部, 助手 (40233829)
TAKEKAWA Yoshinori  Tokyo Women's Medical University, Department of pathology, Research associate, 医学部, 助手 (80236447)
Project Period (FY) 1998 – 1999
Project Status Completed (Fiscal Year 1999)
Budget Amount *help
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1999: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 1998: ¥1,000,000 (Direct Cost: ¥1,000,000)
KeywordsBalin tumor / angigenesis / growth factor / VEGF / Immunohistochemistry / in situ hybridization / In situ hybridization / 中枢神経系腫瘍 / 血管内皮細胞 / 血液脳関門
Research Abstract

1) Expression of VEGH, VEGFR and VEGFmRNA in human and rat brain tymumor.
Vascular endothelial growth factor (VEGF) is a secreted angiogeneic regulator or growth factor of blood vessels during embryonic development and in tumors. We performed expression of VEGF, VEGFR - 1 and VEGFmRNA in human and rat brain.
To evaluate to the role of VEGF in the development of vacular system in tumor, and the effects of the microcircumstance, we analyzed existence VEGF, VEGFR(flt-1) and expression of VEGF mRNA using immunohistochemistry and in situ hybridization in human brain tumors and rat trasnsplanted tumors. We used surgically removed astrocytic tumors and metastatic tumors, subcutaneous and intracerebral transplanted animals with ENU induced rat glioma cultured cell (C6). In astrocytic tumors and metastatic tumors, expression of VEGF and VEGER were recognized in newly-formed micro blood vessels which form glomeruloid proliferations. But no expression in endothelial cells without glomeruloid prolif … More erations. In transplanted tumors, no significant differences of proliferative activities of tumor cells and the morphlogy of newly-formed micro blood vessels were identified in each tumors. No glomeruolid proliferations were noted in newly formed micro blood vessels in both tumors.
Expression of VEGF and VEGFR were recognized in the endothelial cells but no expression of VEGF mRNA. In cerebral tumor, tumor infiltrations were noted in perivascular infilatrarions was recognized in subcutaneous tumor, pseduopalisading patterns were recognized in the subcutaneous ones and the expression of VEGF mRNA were increased in the tumor cells of pseudopalisading areas. The transplanted tumors were though to be affected by of transplanted areas. The biological and morpholgical characteristics the transplanted tumors were thought to be affected by the microcircumstance of transplanted areas.
2) Expression in VEGF, VEGFR, and VEGFmRNA in rat vasculognesis.
To evaluate to the role of VEGF in the development of vascular system in normal physiological state, we were analyzed the existence VEGF and expression of VEGF mRNA using immunohistochemistry and in situ hybridization in newborn rats. 24 newborn rat brains were surgically removed at 1, 3, 5, 7, 10 and 14 days after the birth. The expression of VEGF mRNA was recognized in the endothelial cells of capillaries from one day to the 7 days after the birth, the maximum expressions were demonstarated at 10 days. The expression is decreased at 10 days and no expressions are recognized at 14 days after birth. VEGFmRNA was up regulated in the neurons of all specmens, especially in Purukinje cells and neuron at hippocampi. Maximal expressions are recognized at 5days after birth and decreased grandually. Immunohistochemical stainngs using anti VEGF monoclonal antibody obtained similar findings these findings highly suggested that autocrine and paracrine signal transduction for the stimulation of the growth of neovasculature were established in rat vasculogenesis.
3) The relationship of tight junction related protein and tumor proliferative actoivities.
To elucidate the neovasculature of brain tumors preserve the blood brain barrier (BBB) functions, we studies the expressions of the MDR1 gene products, P-glycoprotein(PgP) and tight juinction related protein. Zo-1 using immunohistochemistry. 30 brain tumors were examined using an anti PgP and an anti ZO-1 Mab, and comparing the expression of VEGF, VEGFR and PCNA.. Positive reactions for PGP and Zo-1 were recoginzed in the endothelial cells in newly formed micro-blloc vessels in primariy glioma but not those in the meningiomas. Although endothelial cells in newly formed micro-blood vessels of all metastatic carcinomas showed positive reaction; negative reactions were seen in those of the primary carcinomas. Weak reactions for anti PgP and Zo-1 compared to those of endothelial cells forming glomeruloid proliferations in newly formed micro-blood vessles in glioblastomas and at the border of the surrounding cerebral tissue of metastatic carcinomas. The negative relations between positive reactions for BBB related proteins, and the expression of VEGF and the proliferative activities were recognized. These findings suggested that the endothelial cells in newly formed micro-blood vessels preserved the fundtions of BBB. Less

Report

(3 results)
  • 1999 Annual Research Report   Final Research Report Summary
  • 1998 Annual Research Report
  • Research Products

    (23 results)

All Other

All Publications (23 results)

  • [Publications] 加藤陽一郎,坂寄紀子,山本智子,柴田亮行,澤田達男,小林槇雄: "癌組織におけるC-JUN遺伝子の発現とその局在の検討"日本病理学会会誌. 87. 359 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 澤田達男,柴田亮行,金澤美穂,加藤陽一郎,竹川義則 他2名: "中枢神経系腫瘍新生血管内皮細胞におけるMDR-1 P-glycoprotein(Pgp)の発現と意義"日本病理学会会誌. 87. 392 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 澤田達男,小林槇雄,竹川義則: "脳腫瘍新生血管内皮細胞におけるP-glycoprotein(Pgp)の局在とその臨床的意義"Brain Tumor Pathology. 15. 57 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Kato Y, Sakayori N, Shibata N, Sawada T, Kobayashi M: "Exppression and its significance of c-jun and mRNA in Rat Brain"Acta Histochme Cytochem. 31. 345-354 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Sawada T, Takekawa Y, Sakurai I, Kobayashi M: "Apoptosis in metastatic carcinoma of the central nervous system"Neuropathology. 18. 370-375 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 澤田達男,加藤陽一郎,小林槇雄,竹川義則: "脳腫瘍におけるVEGFmRNAの局在"Neuropathology. 18. 80 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Sawada T., Kato Y., Sakayori N., Kobayashi M.,: "Vascular endothelial grwoth factor in brain tumor"Handbook and Abstract Proceedng. 88. 35 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Takekawa Y, Sawada T: "Vascular endothelial grwoth factor and neovascularization in astrocytic tumors"Pathology International. 48. 109-114 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Takekawa Y. & Sawada T, Sakurai I: "Expression of apoptosis and its related protein in astrosygeic tumors."Brain Tumor Pathology. 16. 11-16 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Sawada T, Kato Y, Sakayori N, Takekawa N, Kobayashi M: "Expression of the multidrug resistance P-glycoprotein (Pgp MDR-1) by endothelial cells of neovasculature in central nervous system."Brain Tumor Pathology. 16. 23-28 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 澤田達男: "脳腫瘍の血管増殖因子"脳と神経. 51. 109-114 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 澤田達男,加藤陽一郎,金澤美穂: "Astrocytic tumorにおけるvegf, vegrの発現とその臨床的意義"日本病理学会会誌. 88. 163 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 澤田達男: "脳腫瘍の血管増殖因子"脳と神経. 51. 404-410 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Takekawa Y. and Sawada T.: "Vascular endothelial growth factor and neovascularization in astrocytic tumors"Pathology International. 48. 109-114 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Kato Y., Sakayori N., Shibata N., Sawada T., Kobayashi M.: "Chronological Expression and its significance of c-jun and mRNA in Rat Brain"Acta Histochm Cytochem. 31. 345-354 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Sawada T., Takekawa Y., Sakurai I.., Kobayashi M.: "Apotosis in metastatic carcinoma of the central nervous system"Neuropathology. 18. 370-375 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Takekawa Y., Sawada T., Sakurai I.: "Expression of apoptosis and its related protein in astorocytic tumors"Brain Tumor Pathology. 16. 11-16 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Sawada T., Kato Y., Sakayori N., Takekawa N., Kobayashi M.: "Expression of the multidrug resistance P-glycoprotein(Pgp Mdr-1) by endothelial cells of neovasculature in central nervous system"Brain Tumor Pathology. 16. 23-28 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Takekawa Y. & Sawada T.,Sakurai I: "Expression of apoptosis and its related protein in astrosygeic tumors"Brain Tumor Pathology. 16. 11-16 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Sawada T,Kato Y,Sakayori N Takekawa N,Kobayashi M: "Expression of the multidrug resistance P-glycoprotein(Pgp MDR-1) by endothelial cells of neovasculature in central nervous system"Brain Tumor Pathology. 16. 23-28 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 澤田 達男: "脳腫瘍の血管増殖因子"脳と神経. 51. 109-114 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Takekawa Y.et al.: "Vascular endothelial growth factor and neovascularization in astrocytic tumors" Pathology International. 48. 109-114 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Sawada T.et al.: "Apoptosis in metastatic carcinoma of the central nervous system" Neuropathology. 18. 370-375 (1998)

    • Related Report
      1998 Annual Research Report

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Published: 1998-04-01   Modified: 2016-04-21  

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