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AN ANALYSIS OF THE ALTERATIONS OF INTEGRIN GENE FAMILY IN GLIOMAS.

Research Project

Project/Area Number 06671398
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field Cerebral neurosurgery
Research InstitutionSAGA MEDICAL SCHOOL

Principal Investigator

TODA Keisuke (1995)  SAGA MEDICAL SCHOOL,FACULTY OF MEDICINE,LECTURER, 医学部, 助手 (80274588)

広津 辰美 (1994)  佐賀医科大学, 医学部, 助手 (00244012)

Co-Investigator(Kenkyū-buntansha) KOGA Hisao  SAGA MEDICAL SCHOOL,FACULTY OF MEDICINE,LECTURER, 医学部, 助手 (30153513)
SHIRAISHI Tetsuya  SAGA MEDICAL SCHOOL,FACULTY OF MEDICINE,LECTURER, 医学部, 助手 (70206275)
FUKUYAMA Kouzou  SAGA MEDICAL SCHOOL,FACULTY OF MEDICINE,LECTURER, 医学部, 助手 (60238516)
HIROTSU Tatsumi  SAGA MEDICAL SCHOOL,FACULTY OF MEDICINE,LECTURER, 医学部, 助手 (00244012)
Project Period (FY) 1994 – 1995
Project Status Completed (Fiscal Year 1995)
Budget Amount *help
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1995: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1994: ¥1,400,000 (Direct Cost: ¥1,400,000)
Keywordsintegrin / glioma / GFAP / extracellular matrix / collagenase / stromelysin / 細胞接着 / 脳腫瘍 / 細胞間情報伝達
Research Abstract

The integrin family is a group of cell surface receptors against extracellular matrix proteins, such as collagen, fibronectin and laminin. They make a complex with membrane conjugated proteins, such as tarin and vinculin, which connected with cyteskeletone proteins ; actine and myosine. The actine is well known as a partner of glial cell specific intermediate filament ; CFAP,in glial cells. That is the various signals from the extracellular matrix go through integrins into cytoplasm, finally transduce to GFAP,which modulates the cellular molphology and mobility.
In normal central nervous system, it is observed the expression of a2-, a3-, a6-, b1, and b4-subunit of integrin, but no expression of a4-, a5-, av-, b2-, and b3-subunit. It has been reported that the overexpression of a3-and b1-subunit and abnormal expression of a5-, av-, and b3-subunit were detected in human glioma cells. In this study we revealed the deceased expression of a5- and a6-subunit specifically in some invasive glio … More mas, which were deficient with GFAP.These cells produced increased volume of type IV collagenase and stromelysin, and decreased volume of their inhibitors ; TIMP-1 and TIMP-2. It seemed very interesting that the decreased expression of a5-and a6-subunit was associated with the deficient of the GFAP in glial tumors.
It is observed many GFAP processes are anchoring the vessells in glial tumor. Most of them are MIB-1 negative, non-proliferating cells. The MIB-1 positive, proliferating cells are usually detach from vessels, and migrate into brain parenchyme. We hypothesized that the tumor cells without certain integrins easily detach from the extracellular matrix, and migrate, and invade and proliferate in brain parenchyme. In this study we observed invasive glioma cells which are deficient with a5-and a6-subunit produced increased amount of collagenases, also expressed fewer amount of GFAP.This fact can explain the hypothesis that the integrin mediate the anchorage dependent growth and migration suppression. Less

Report

(3 results)
  • 1995 Annual Research Report   Final Research Report Summary
  • 1994 Annual Research Report
  • Research Products

    (15 results)

All Other

All Publications (15 results)

  • [Publications] Fukuyama K et al: "Analysis of GFAP gene methy lation in human malignant glioma" Anticancer research. 16. (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Matsuzawa K,Fukuyama K: "Transfection of an invasive astroaytoma cell line with TIMP-1 cDNA" J of Neuropathology and Experimeutal Neurology. 55. 88-96 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Muller M,Fukuyama K: "Characterization of pineal region melignant rhabdoid tumcγ" Pediatric Neurosurgery. 22. 204-209 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Rutka JT,Fukuyama K: "Expression of TIMP1,TIMP2,72K and 92K type IV collagenase pans-criots in human astrocytoma cell lines" International Journal of Oncology. 6. 877-884 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Rutko JT,Fukuyama K: "Effects of Auti-Sevse Glial fibrillary Acidic Protein conpleuatony DNA on the growth,invasion of human as Docytowa cells." Cancer Research. 54. 3267-3273 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] James T Rutka, Sherri Lynn Hubbard, Kozo Fukuyama, Kazuhito Matsuzawa, Peter Dirks: "Effects of Anti-sense Glial Fibrillray Acidic Protein complementary DNA on the growth, invasion, and adhesion of human astrocytoma cells." Cancer Res.54. 3267-3273 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Rutka, J.T., Matsuzawa, K., Hubbard, S.L., Fukuyama, K., Becker, L.E., Stetler-Stevenson, W., Edwards, D.R., Dirks, P.B.: "Expression of TIMP-1, TIMP-2,72-and 92-kDa type IV collagenase transcripts in human astrocytoma cell lines : Correlation with astrocytoma cell invasiveness." International Journal of Oncology. 6. 877-884 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Muller, M., Hubburd, S.L., Fukuyama, K., Dirks, P., Matsuzawa, K., Rutka, J.T.: "Characterization of pineal region malignant rhabdoid tumor." Pediatric Neurosurgery. 22. 204-209 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Tabuchi, K., Fukuyama, K.: "Anoverview of gene therapy for glioma." Neurosurgeons. 14. 148-158 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Matsuzawa, K., Fukuyama, K., Rutka, J.T.: "Transfection of an invasive astrocytoma cell line with TIMP-1 cDAN : Modulation of astrocytoma invasive potential." J.of Neuropatholgy and Experimental Neurology. 55. (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Fukuyama, K., Matsuzawa, K., Hubbard, S.L., Dirks, B.P., Murakami, M., Rutka, J.T.: "Analysis of GFAP gene methy-lation in human malignant gliomas." Anticancer Research. 16(in press). 88-96 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Fukuyama K et al.: "Analysis of GFAP gene methy lation in human macignant glioua" Anticancer research. 16. (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] Matsuzawa K,Fukuyama K.: "Transtection of an invasive astroaytoma cell Line with TIMP-1 cDNA" J of Neuropathology and Experimecital Neurology. 55. 88-96 (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] Muller M, Fukuyama K.: "Characterization of pineal region malignant rhabdoid tumcr" Pediatric Neurosurgery. 22. 204-209 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] Rutka JT,Fukuyama K.: "Expression of TIMP1,TIMP2,72K and 92K type TV collagenase trams-cripts in human astrocytona cell lines" International Journal of Orcology. 6. 877-884 (1995)

    • Related Report
      1995 Annual Research Report

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Published: 1994-04-01   Modified: 2016-04-21  

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