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1993 Fiscal Year Final Research Report Summary

Regulation Mechanisms of Ribosomal Gene in Cellular Growth and Differentiation

Research Project

Project/Area Number 04404025
Research Category

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

Allocation TypeSingle-year Grants
Research Field General medical chemistry
Research InstitutionSaitama Medical School

Principal Investigator

MURAMATSU Masami  Saitama Medical School Fac.of Med.Professor, 医学部, 教授 (10035454)

Co-Investigator(Kenkyū-buntansha) MAKINO Yasutaka  Chiba University Fac.of Science Assistant, 理学部, 助手 (20240989)
TAMURA Taka-aki  Chiba University Fac.of Science Professor, 理学部, 教授 (30112692)
SUZUKI Toshiya  Saitama Medical School Fac.of Med.Assistant, 医学部, 助手 (90216416)
YAMAMOTO Kazuo  Saitama Medical School Fac.of Med.Assistant, 医学部, 助手 (70255123)
NOGI Yasuhisa  Saitama Medical School Fac.of Med.Assistant Professor, 医学部, 助教授 (60101937)
Project Period (FY) 1992 – 1993
KeywordsrDNA / RNA polymerase / UBF / Transcriptional Regulation / FM3A / MH134 / RPA40 / PAF53
Research Abstract

The major accomplishments during the three year period are summarized as follows.
1. Elucidation of the nucleolar targeting mechanism of mouse UBF (mUBF) and analysis of the transcription regulatory region of the mUBF gene.
By examining various domain deletion mutants of mUBF, it was found that the mUBF goes into the nucleus by NLS present in HMG box and accumulated into the nucleous by the strong affinity of the HMGbox1 and acidic domain to rDNA and SL1, respectively. On the other hand, by using upstream deletion mutants of mUBF connected to CAT gene, the mUBF gene has been found to have multiple SP1 binding sites working like one of the house keeping genes.
2. Identification of an RNA polymerase I inhibitory protein (PIN) in growth-arrested FM3A cells.
We have identified a protein which specifically inhibits rDNA transcription in vitro in extracts from mouse FM3A cells that have been deprived of serum and growth-arrested. This factor, designated PIN, appears to inhibit the start of pol I from the initiation complex.
3. Determination of subunit organization of mouse pol I and the cloning of RPA40 subunit and PAF 53 (polymerase associated factor 53).
We have developed a new purification procedure for RNA polymerase I (pol I) from mouse MH134 cells and analyzed the subunit composition. Unlike previous reports, mouse pol I was found to have about twelve small subunits in addition to two large subunits, corresponding in major part to those of yeast S.cerevisiae pol I.This has shown a strong conservation of pol I structure during evolution. Furthermore, a pol I associated factor with Mr=54KD was cloned and was found to stimulate specific rDNA transcription by interacting both with pol I and UBF.

  • Research Products

    (14 results)

All Other

All Publications (14 results)

  • [Publications] Koji Hisatake: "Cloning and structural analysis of cDNA and its gene for mouse transcription factor mUBF." Nucleic Acids Res.19. 4631-4637 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Takashi Kondo: "The regulation of the murine Hox-2.5 gene expression during cell differentiation." Nucleic Acids Res.20. 5729-5735 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Yasushi Maeda: "Nucleolar targeting of transcription factor UBF directed by both HMG boxes and acidic tail." EMBO J.11. 3695-3704 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Shigeru Morimura: "Trans-activation of glutathione transferase P gene during chemical hepatocarcinogenesis of the rat." Proc.Natl.Acad.Sci.USA. 90. 2065-2068 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Yukio Mishima: "Transcrption of mouse ribosomal RNA gene with inactive extracts is activated by NAD in vitro." J.Biochem.113. 36-42 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Milko Kermekchiev: "Presence of an inhibitor of RNA polymerase I mediated transcription in extracts from growth arrested mouse cells." Nucleic Acids Res.21. 447-453 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 村松 正實: "分子医学への招待" 南江堂, 98 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Koji Hisatake: "Cloning and structural analysis of cDNA and its gene for mouse transcription factor mUBF." Nucleic Acids Res.19. 4631-4637 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Takashi Kondo: "The regulation of the murine Hox-2.5 gene expression during cell differentiation." Nucleic Acids Res.20. 5729-5735 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Yasushi Maeda: "Nucleolar trageting of transcription factor UBF directed by both HMB boxes and acidic tail." EMBO J.11. 3695-3704 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Shigeru Morimura: "Trans-activation of glutathione transferase P gene during chemical hepatocarcinogenesis of the rat." Proc.Natl.Acad.Sci.USA. 90. 2065-2068 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Yukio Mishima: "Transcription of mouse ribosomal RNA gene with inactive extracts is activated by NAD in vitro." J.Biochem.113. 36-42 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Milko Kermekchiev: "Presence of an inhibitor of RNA polymerase I mediated transcription in extracts from growth arrested mouse cells." Nucleic Acids Res.21. 447-453 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Masami Muramatsu: Introduction to Molecular Medicine (in Japanese). Nanko-do, 98 (1992)

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

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Published: 1995-03-27  

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