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遺伝子発現を利用した照射効果測定

Research Project

Project/Area Number 11670870
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Radiation science
Research InstitutionTOKYO UNIVERSITY OF PHARMACY AND LIFE SCIENCE (2000)
The University of Tokyo (1999)

Principal Investigator

HIRANO Kazuya  TOKYO UNIVERSITY OF PHARMACY AND LIFE SCIENCE SCHOOL OF PHARMACY, LECTURER, 薬学部, 講師 (80251221)

Co-Investigator(Kenkyū-buntansha) BEPPU Masatoshi  TOKYO UNIVERSITY OF PHARMACY AND LIFE SCIENCE SCHOOL OF PHARMACY, PROFESSOR, 薬学部, 教授 (60114633)
SUZUKI Norio  TOKYO UNIVERSITY OF PHARMACY AND LIFE SCIENCE GARADIATE SCHOOL, FACULTY OF MEDICINE, UNIVERSITY OF TOKYO, PROFESSOR, 大学院・医学系研究科, 教授 (10010050)
松本 義久  東京大学, 大学院・医学系研究科, 助手 (20302672)
Project Period (FY) 1999 – 2000
Project Status Completed (Fiscal Year 2000)
Budget Amount *help
¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 2000: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1999: ¥2,800,000 (Direct Cost: ¥2,800,000)
KeywordsMUC1 / Radiation / Tumor anitigen / MUCl / 放射線 / 腫瘍抗原 / 放射線応答 / ムチン / X線
Research Abstract

The effect of X-irradiation on production of MUC1 was studied with human colon carcinoma HT-29 cells. Monoclonal antibody (mAb) MY.1E12 was used to identify MUC1. Immunomicroscopically, the percentage of MUC1 positive cell was 52% in 6 Gy irradiated cells at day 4, compared with 26% in unirradiated cells. By flow cytometric analysis, MUC1 on 6 Gy irradiated cells was elevated at day 1, reaching plateau by day 4. Westerm blot analysis showed both 500 kDa and 390 kDa bands corresponding to two polymorphic MUC1 alleles were increased after X-irradiation. The transcriptional activity of the MUC1 gene was analyzed by transient expression of MUC1-CAT reporter plasmid containing the 5'-flanking sequence of the MUC1 gene fused to the bacterial chloramphenicol acetyltransferase (CAT) gene. Elevation of CAT activity was observed in parallel with the expression of MUC1 after 6 Gy of X-irradiation. Moreover, to investigate in vivo effects, we developed a stable high-expression green fluorescent protein (GFP) transfectant of human colon carcinoma HT-29 cells. GFP-expressing cells (HT-29/GFP) were transplanted into the hind rimb of nude mice. After 40 days, tumor-bearing nude mice were irradiated of 0, 6, 10, 20, 30, 50 Gy. After 4 days, Westem blot analysis showed both 500 kDa and 390 kDa bands were increased of tumor derived HT-29/GFP cells after X-irradiation. These findings indicate that enhanced expression of MUC1 in irradiated HT-29 cells was due to upregulation of the MUC1 transcription.

Report

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

    (4 results)

All Other

All Publications (4 results)

  • [Publications] Y.Kang,K.Hirano,N.Suzuki et al.: "Increased expression after X-irradiation of MUCl in cultured human colon carcinoma HT-29 cells."Jpn.J.Cancer Res.. 91. 324-330 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Yun Kang, Kazuya Hirano, Norio Suzuki, Atsushi Enomoto, Akinori Morita, Tatsuro Irimura, and Kazuo Sakai: "Increased expression after X-irradiation of MUC1 in cultured human colon carcinoma HT-29 cells."Jpn.J.Cancer Res.. 91. 324-330 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y.Kang,K.Hirano,N.Suzuki et al.: "Increased expression after X-irradiation of MUCl in cultured human colon carcinoma HT-29 cells."Jpn.J.Cancer Res.. 91. 324-330 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Y. Kang, K. Hirano, N. Suzuki, A. Enomoto, A. Morita, T. Irimura, and K. Sakai: "Increased expression after X-irradiation of MUCI in cultured human colon carcinoma HT-29 cells"Jpn. J. Cancer Res.. 91(in press). (2000)

    • Related Report
      1999 Annual Research Report

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

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