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MOLECULAR BIOLOGICAL STUDIES OF APOPTOSIS ENDONUCLEASE IN HUMAN NEUROBLASTOMAS

Research Project

Project/Area Number 07457419
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 小児外科
Research InstitutionUNIVERSITY OF TOKYO

Principal Investigator

YOKOMORI Kinji  UNIVERSITY OF TOKYO HOSPITAL,ASSOCIATE PROFESSOR, 医学部・附属病院, 助教授 (20251291)

Co-Investigator(Kenkyū-buntansha) TANUMA Sei-ichi  UNIVERSITY OF TOKYO HOSPITAL,PROFESSOR, 薬学部, 教授 (10142449)
OBANA Kazuko  UNIVERSITY OF TOKYO HOSPITAL,ASSISTANT, 医学部・附属病院, 助手 (60272580)
KAMII Yoshiyuki  UNIVERSITY OF TOKYO HOSPITAL,ASSISTANT, 医学部・附属病院, 助手 (70177567)
TSUCHIDA Yoshiaki  UNIVERSITY OF TOKYO HOSPITAL,PROFESSOR, 医学部・附属病院, 教授 (80010164)
Project Period (FY) 1995 – 1996
Project Status Completed (Fiscal Year 1996)
Budget Amount *help
¥7,900,000 (Direct Cost: ¥7,900,000)
Fiscal Year 1996: ¥1,900,000 (Direct Cost: ¥1,900,000)
Fiscal Year 1995: ¥6,000,000 (Direct Cost: ¥6,000,000)
KeywordsNEUROBLASTOMA / APOPTOSIS / ENDONUCLEASE / DNA FRAGMENTATION
Research Abstract

During the research period in 1995, apoptosis induction was examined for each of 16 human neuroblastoma cell lines, using the following three apoptosis inducers, namely, actinomycin D,adriamycin, and camptothecin, . We have already found that the cleavage of DNA in apoptotic cells occurs in at least two steps, i.e., large fragmentation of DNA of 2-50 kilobase pairs and internucleosomal fragments of 180 basepairs. Depending upon the size of DNA fragmentation oberved in each tumor cell line, we found that 16 human neuroblastoma cell lines investigated were classified into the followign three categories ; (1) cell line in which even large fragmentation was not induced by any of the aforementioned three apoptotic inducers, (2) cell line in which only large fragmentation was induced followed by no further small fragmentaton, and (3) cell line in which small fragmentation into internucleosomal fragments with typical apoptotic DNA ladder formation was induced following large fragmentation.
Dur … More ing the year 1996, our study was directed mainly toward identification of DNase lambda, a newly recognized key-endonuclease responsible for large fragmentation, by comparing the enzymatic activity between a pair of neruoblastoma cell lines ; one cell line (TGW) with positive DNase lambda activity and the oher one (GOTO) lacking it. We exmined whether large DNA fragmentation can be induced in vitro by autodigested nuclei of DNase lambda positive TGW cells, and confirmed the induction of large fragmentation with about 20 kb fragments.
Using this autodigestion system, fragmentation induction in vitro was further exmined in GOTO cells without DNase lambda, and in SK-N-SH cells with both DNase lambda and DNase gamma (a key-endonuclease for small, internucleosomal fragmentation). As has been expected, no induction was seen in GOTO cells, while in SK-N-SH cells small fragmentation in vitro was shown.
For further genetic analysis studies on DNase gamma in small DNA fragmentation b, three neuroblastoma cells with distinct biological characteristics (GOTO,TWGW,and SK-N-SH) were propagated and kept frozen. Less

Report

(3 results)
  • 1996 Annual Research Report   Final Research Report Summary
  • 1995 Annual Research Report
  • Research Products

    (21 results)

All Other

All Publications (21 results)

  • [Publications] Sei-ichi Tanuma: "Molecular mechanisms of apoptosis" Apoptosis in Normal Development and Cancer (ed.by Mels Sluyser).Taylor & Francis. 39-59 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Sei-ichi Tanuma: "Inhibitory effect of tannic acid on human immunodeficiency virus promoter activity induced by 12-0-tetradecanoylphorbol-13-acetate in Jurkat T-cells." Biochem.Biophys.Res.Commun.220. 411-417 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Sei-ichi Tanuma: "DNA fragmentation during thymic apoptosis is catalyzed by DNase γ." Apoptosis. 1. 147-152 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Sei-ichi Tanuma: "Properties of poly (ADP-ribose) glycohydrolase purified from pig testis nuclei." Arch.Biochem.Biophys.336. 139-146 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Sei-ichi Tanuma: "Replication factor Crecognizes 5′-phosphate ends of telomeres." Biochem.Biophys.Res.Commun.229. 310-315 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Sei-ichi Tanuma: "Restrictive proteolysis of fodrin to 120 kDa fragment is not catalyzed by calpain during thymic apoposis" Apoptosis. 2. 1-7 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Sei-ichi Tanuma: "Molecular mechanisms of apoptosis" Apoptosis in Nomal Development and Cancer ced by Mels Sluyset), Taylor & Francis.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Sei-ichi Tanuma: "Inhibitory effect of fannic acid on human immunodeliciency virus promoter activity induced by 12-0-tetradecanoylphorbol-13-acetate in Jarkat T-cells" Biochem.Biophys.Res Commun. 200. 411-417 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Sei-ichi Tanuma: "DNA fragmentation during thymic apoptosis is catalyzed by DNase gamma" Apoptosis. 1. 147-152 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Sei-ichi Tanuma: "Properties of poly (ADP-ribose) glycohydrolase purified from pig testis muclei" Arch.Biochem.Biophys.336. 139-146 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Sei-ichi Tanuma: "Replication factor Crecognized 5'-phosphale ends of telomeres" Biochem.Biophys.Res.Commun.229. 310-315 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Sei-ichi Tanuma: "Restrictive proteolysis of fodrin : to 120 kDa fragment is not catalyzed by calpain during thymic apoptosis" Apoptosis. 2. 1-7 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Sei-ichi Tanuma: "Molecular mechanisms of apoptosis." Apoptosis in Normal Development and Cancer (ed.by Mels Sluyser),Taylor & Francis. 39-59 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Sei-ichi Tanuma: "Inhibitory effect of tannic acid on human immunodeficiency virus promoter activity induced by 12-0-tetradecanoylphorbol-13-acetate in Jurkat T-cells." Biochem.Biophys.Res.Commun.220. 411-417 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Sei-ichi Tanuma: "DNA fragmentation during thymic apoptosis is catalyzed by DNase γ." Apoptosis. 1. 147-152 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Sei-ichi Tanuma: "Properties of poly(ADP-ribose)glycohydrolase purified from pig testis nuclei." Arch.Biochem.Biophys.336. 139-146 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Sei-ichi Tanuma: "Replication factor C recognizes 5′-phosphate ends of telomeres." Biochem.Biophys.Res.Commun.229. 310-315 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Sei-ichi Tanuma: "Restrictive proteolysis of fodrin to 120 kDa fragment is not catalyzed by calpain during thymic apoptosis." Apoptosis. 2. 1-7 (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] 田沼 靖一: "アポトーシスとは何か-死からはじまる生の科学-" 講談社, 239 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 田沼 靖一: "アポトーシと創薬" ファルマシア, 140 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 横森欣司: "アポトーシス誘導による神経芽細胞腫細胞株分類の試み" 小児がん. 32. 353 (1995)

    • Related Report
      1995 Annual Research Report

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Published: 1995-04-01   Modified: 2016-04-21  

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