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Study for inactivation mechanism of tumor-associated genes in sporadic colorectal cancers

Research Project

Project/Area Number 13671348
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Digestive surgery
Research InstitutionTOHO UNIVERSITY

Principal Investigator

HEMMI Hiromichi  Toho Univ Sch Med, Dept Mol Biol, Associate Professor, 医学部, 助教授 (90165514)

Co-Investigator(Kenkyū-buntansha) ARITA Michitsune  Toho Univ Sch Med, Dept Mol Biol, Research Associate, 医学部, 助手 (80307719)
小池 淳一  東邦大学, 医学部, 助手 (30339155)
Project Period (FY) 2001 – 2002
Project Status Completed (Fiscal Year 2002)
Budget Amount *help
¥3,600,000 (Direct Cost: ¥3,600,000)
Fiscal Year 2002: ¥1,400,000 (Direct Cost: ¥1,400,000)
Fiscal Year 2001: ¥2,200,000 (Direct Cost: ¥2,200,000)
KeywordsDNA mismatch repair genes / hMLH1 gene / hMSH2 gene / histone / acetylation / transcription factor / colorectal cancer / cell lines / ミスマッチ修復遺伝子 / ヒストンH4 / 転写活性 / アセチル化状態
Research Abstract

Accumulation of mutations in oncogenes and tumor suppressor genes is essential for generation of colorectal cancer. Defect of a DNA mismatch repair (MMR) gene is known to be responding to one of the accumulated mutations in these cancer-related genes. Seven human MMR genes including hMLH1 and hMSH2 have been identified. More than half of most HNPCC and certain fraction of sporadic colorectal cancers shows abnormality in the hMLH1 and hMSH2 genes. An epigeneic modification, namely hypermethylation, in the promoter region of the hMLH1 gene has been demonstrated as one of mechanisms of gene inactivation. Since we had inactivated sporadic cases without mutation in the gene nor hypermethylation, we looked for the another mechanism of inactivation. In this study, we focused two points: one is relationship between histone acetylation status and expression of hMLH1 and hMSH2; second is a regulatory mechanism of the hMLH1 gene expression.
1) Acetylation status of the hMLH1 gene promoter in human colorectal cancer cell lines was examined by a ChIP method using anti histone H4 antibody. There was no correlation between protein expression and the acetylation status. However, TSA, an inhibitor of the deacetylation enhanced gene expression, indicating that acetylation enhances the expression.
2) Essential sites in the promoter region of the hMLH1 gene for transcription has been identified. Then, we screened factors binding to the one of the essential sites by a yeast one-hybrid system. As on candidate, p29 protein, of which gene located in 1p31-32 where known to be frequent loss in colorectal cancer, has been found. The detailed investigation for the role and function of p29 are required in future.

Report

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

    (27 results)

All Other

All Publications (27 results)

  • [Publications] Zhong X: "A single nucleotide polymorphism in the promoter region of the hMLH1 gene : Effect on transcriptional activity and application for a marker of detecting allelic loss"J Med Soc Toho. 48・2. 114-124 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Miyafuji Y: "Growth inhibition due to complementation of a transforming growth factor-β receptor type II-defect by human chromosome 3 transfer in human colorectal carcinoma cells"J Cell Physiol. 187・3. 356-364 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Guo RJ: "Microsattelite instability of papillary subtype of human gastric adenocarcinoma and hMLH1 promoter hypermethylation in the surrounding mucosa"Pathol Int. 51・4. 240-247 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Watanabe Y: "A change in microsatellite instability caused by cisplatin-based chemotherapy of ovarian cancer"Brit J Cancer. 85・7. 1064-1069 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Iwasaki I: "Establishment of cisplatin-resistant variants of human neuroblastoma cell lines, TGW and GOTO, and their drug cross-resistance profiles"Cancer Chemother Pharmacol. 49・6. 438-444 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Sugiyama H: "Differential inducibility of p53 downstream genes in human neuroblastoma sell lines"J Med Soc Toho. 50・1. 13-23 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Arita M: "Multiple sites required for expression in 5'-flanking region of the hMLH1 gene"Gene. 306C・1. 57-65 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Yamada K: "Oncogenic pathway of sporadic colorectal cancer with novel germline missense mutations in the hMSH2 gene"Oncol Rep. (in press). (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 逸見仁道: "遺伝子異常;MSI症例を中心に"日本臨床. (印刷中). (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Zhong X, et al: "A single nucleotide polymorphism in the promoter region of the hMLH1 gene: Effect on transcriptional activity and application for a marker of detecting allelic loss"J Med Soc Toho. 48 (2). 114-124 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Miyafuji Y, et al: "Growth inhibition due to complementation of a transforming growth factor-b receptor type II-defect by human chromosome 3 transfer in human colorectal carcinoma cells"J Cell Physiol. 187. 356-364 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Guo RJ, et al: "Microsatellite Instability of papillary subtype of human gastric adenocarcinoma and hMLH1 promoter hypermethylation in the surrounding mucosa"Pathol Int. 51. 240-247 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Watanabe Y, et al: "A change in microsatellite instability caused by cisplatin-based chemotherapy of ovarian cancer"Brit J Cancer. 85. 1064-1069 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Iwasaki I, et al: "Establishment of cisplatin-resistant variations of human neuroblastoma cell lines, TGW and GOTO, and their drug cross-resistance profiles"Cancer Chemother Pharmacol. 49. 438-444 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Sugiyama H, et al: "Differential inducibility of p53 downstream genes in human neuroblastoma cell lines"J Med Soc Toho. 50(1). 13-23 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Arita M, et al: "Multiple sites required for expression in 5'-flanking region of the hMLH1 gene"Gene. 306C. 57-65 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Yamada K, et al: "Oncogenic pathway of sporadic colorectal cancer with novel germline missense mutations in the hMSH2 gene"Oncol Rep. in press. (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Iwasaki I: "Establishment of cisplatin-resistant variants of human neuroblastoma cell lines, TGW and GOTO, and their drug cross-resistance profiles"Cancer Chemother Pharmacol. 49・6. 438-444 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Sugiyama H: "Differential inducibility of p53 downstream genes in human neuroblastoma cell lines"J Med Soc Toho. 50・1. 13-23 (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] Arita M: "Multiple sites required for expression in 5'-flanking region of the hMLH1 gene"Gene. 306C・1. 57-65 (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] Yamada K: "Oncogenic pathway of sporadic colorectal cancer with novel germline missense mutations in the hMSH2 gene"Oncol Rep. (in press). (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] 逸見仁道: "遺伝子異常:MSI症例を中心に"日本臨床. (印刷中). (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] Zhong X: "A single nucleotide polymorphism in the promoter region of the hMLH1 gene:Effect on transcriptional activity and application for a marker of detecting allelic loss"J Med Soc Toho. 48・2. 114-124 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Miyafuji Y: "Growth inhibition due to complementation of a transforming growth factor-β receptor type II-defect by human chromosome 3 transfer in human colorectal carcinoma cells"J Cell Physiol. 187・3. 356-364 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Guo RJ: "Microsattelite instability of papillary subtype of human gastric adenocarcinoma and hMLH1 promoter hypermethylation in the surrounding mucosa"Pathol Int. 51・4. 240-247 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Watanabe Y: "A change in microsatellite instability caused by cisplatin-based chemotherapy of ovarian cancer"Brit J Cancer. 85・7. 1064-1069 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Iwasaki I: "Establishment of cisplatin-resistant variants of human neuroblastoma cell lines,TGW and GOTO,and their drug cross-resistance profiles"Cancer Chemother Pharmacol. (in press). (2001)

    • Related Report
      2001 Annual Research Report

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Published: 2001-04-01   Modified: 2016-04-21  

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