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1992 Fiscal Year Final Research Report Summary

Analysis of N-myc Gene Amplification and Rearrangement in Neuroblastoma Cells and Tumors

Research Project

Project/Area Number 02807116
Research Category

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

Allocation TypeSingle-year Grants
Research Field General surgery
Research InstitutionFujita Health University

Principal Investigator

KISHIKAWA Teruaki  Fujita Health Univ., Medicine, Professor, 医学部, 教授 (60080131)

Co-Investigator(Kenkyū-buntansha) KATO Takasumi  Fujita Health Univ., Medicine, Assistant Professor, 医学部, 講師 (20117807)
Project Period (FY) 1990 – 1992
KeywordsAlu Sequence / Gene Amplification / Neuroblastoma / N-myc gene / PFG
Research Abstract

N-myc gene is frequently amplified in human Neuroblastoma(Nb) cells and correlation between N-myc gene amplification and advanced Nb tumor with poor prognosis is well documented. We have been working on the mechanism of N-myc gene amplification in Nb tumors and cell lines. We analyzed 7 cell lines (IMR-32, GOTO, TGW, Ngai, NB-1, YT-nu, SKNSH) and 86 tumor samples. Amplification of N-myc gene was observed in 5 cell line (IMR-32, GOTO, TGW, Nagai, YT-nu) and 9 tumor samples (StageIII2, StageIV_A 7) and DNA rearrangement in the vicinity of N-myc gene was also observed in 5 cell lines (GOTO, TGW, Ngai, YT-nu, NB-1). We isolated the rearranged DNA from TGW cells and determined the nucleotide sequences of the rearranged region. The rearrangement occurred between the end of exon 3 of N-myc gene and Alu sequence. The rearranged point in the Alu sequence corresponds to a hot point for DNA rearrangements including Alu-Alu homologous recombination. We also characterized N-myc gene amplification in three cell lines(IMR-32, TGW, GOTO). Rearrangements in long-range regions surrounding amplified N-myc genes were examined by pulsed-field gel electrophoresis. Since rarecutting enzymes complete-ly digested DNA at the middle of the N-myc gene, we were able to construct a physical map upstream and downstream of the germline N-myc gene, and to obtain information on restriction sites surrounding amplified N-myc genes. This method enables us to envisage the organization of amplified units over a long range. Digestion patterns differed considerably among the germline and the three cell lines, but were simple in each case.
We estimate that the minimal distance between neighboring N-myc genes is at least several hundred kilobases.

  • Research Products

    (8 results)

All Other

All Publications (8 results)

  • [Publications] 加藤 浩: "Characterization of DNA rearrangements of N-myc gene amplification in three neuroblastoma cell lines by pulsed-field gel electrophoresis" FEBS. 250. 529-535 (1989)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 加藤 浩: "培養神経芽腫細胞TGWにおける癌遺伝子N-mycのAmplification とRearrangement" 日本小児外科学会雑誌. 26. 1110-1117 (1990)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Tohru MATSUOKA: "Direct cloning of a long restriction fragment aided with a jumping clone" GENE. 107. 27-35 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 青野 真治: "癌遺伝子N-mycの増幅とdelayed primary operation手術切除材料におけるN-mycコピー数測定の問題点" 日本小児外科学会雑誌. 28. 1397-1402 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Hiroshi Kato: "Characterization of DNA rearrangements of N-myc gene amplification in three neuroblastoma cell lines by plused-field gel electrophoresis" FEBS 250. 2. 529-535 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Hiroshi Kato: "Analysis of N-myc Gene Amplification and Rearrangement in Neuroblastoma Cells and Tumors" 26.6. 1110-1117 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Tohru Matsuoka: "Direct cloning of a long restriction fragment aided with a jumping clone" GENE. 107. 27-35 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Shinji Aono: "The influence of delayed primary operation on the amplification of N-myc oncogene in human neuroblastoma" 28.7. 1397-1402 (1992)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1994-03-24  

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