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Cis-Acting and Trans-Acting Elements that Regulate Tissue-Specific Gene Expression

Research Project

Project/Area Number 01570131
Research Category

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

Allocation TypeSingle-year Grants
Research Field General medical chemistry
Research InstitutionOsaka University

Principal Investigator

NOGUCHI Tamio  Osaka Univ. Faculty of Med. Assist. Prof., 医学部, 講師 (70135721)

Project Period (FY) 1989 – 1990
Project Status Completed (Fiscal Year 1990)
Budget Amount *help
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1990: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 1989: ¥1,200,000 (Direct Cost: ¥1,200,000)
KeywordsPyruvate kinase genes / Enhancer / Transcription factor / Tissue-specific expression / Alternative splicing / cis-Acting element / CATアッセイ / 肝特異的転写因子
Research Abstract

Cis-Acting elements responsible for tissue- (cell-) specific expression of the pyruvate kinase L gene was studied by transient DNA transfer experiments with chloramphenicol acetyltransferase fusion and by transgenic mice carrying the fusion gene. We found three positive regulatory regions required for expression of the L-type isozyme in adult rat hepatocytes. These regions were designated as PKL-I, PKL-II, and PKL-III. PKL-I showed enhancer-like activity alone, whereas PKL-II PKL-III did not have any independent effect. The inclusion of all three elements oriented in the same direction had the maximum synergistic effect, indicating that these elements function as a unit. This unit enhanced expression from heterologous as well as homologous promoters in a manner that was independent of its orientation and position relative to the cap site. The activity of the unit was not detected in HeL a cells. The 5' flanking region of the L gene containing the unit also directed tissue-specific expr … More ession of transgene in a manner similar to that of the endogeneous L-type isozyme. Thus, this unit is responsible for tissue (cell)-specific expression of the L-type isozyme. Gel retardation assay indicated that the transcription factor called LF-B1 bound to PKL-I and that different unknown nuclear proteins bound to PKL-II and PKL-III. Genomic clones containing the human pyruvate kinase M gene were isolated and their sequences were determined. The gene is approximately 32 kb long and consists of 12 exons and 11 introns. The 5' flanking region of the gene showed high sequence similarity with that of the rat M gene. Bacterial chloramphenicol acetyl-transferase assay revealed that the upstream region from -493 to - 51 contained a cis-acting element (s) that was essential for expression of the M gene in Hela calls. Long stretches of conserved regions were found in the introns around the M_1- and M_2-specific exons, suggesting that these regions may be involved in the alternative splicing machinery. Less

Report

(3 results)
  • 1990 Annual Research Report   Final Research Report Summary
  • 1989 Annual Research Report
  • Research Products

    (14 results)

All Other

All Publications (14 results)

  • [Publications] K.リヨウイキ19885-19891

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] Kazuya Yamada et al.: "Tissueーspecific expression of rat pyruvate kinase L/chloramphenicol acetyltransferase fusion gene in transgenic mice and its regulation by diet and insulin" Biochemical Biophysical Research Communication. 171. 243-249 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] Kazuya Yamada et al.: "Identification and characterization of hepatocyteーspecific regulatory regions of the rat pyruvate kinase L gene.The synergistic effects of multiple elements." Journal of Biological Chemistry. 265. (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 野口 民夫: "ピルビン酸キナ-ゼの遺伝子調節機構と臨床応用" 臨床病理. 38. 868-875 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] Masaru Takenaka et al.: "Isolation and characterization of the human pyruvate kinase M gene" European Journal of Biochemistry. (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] Yamada, K. et al.: "Tissue-specific expression of rat pyruvate kinase L/chloramphenicol acetyltransferase fusion gene in transgenic mice and its regulation by diet and insulin." Biochem. Biophys. Res. Commun. 171. 243-249 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] Yamada, K. et al.: "Identification and characterization of hepatocyte-specific regulatory regions of the rat pyruvate kinase L gene. The synergistic effects of multiple elements." J. Biol. Chem. 265. 19885-19891 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] Takenaka, M. et al.: "Isolation and characterization of the human phruvate kinase M gene." Eur. J. Biochem. (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] kazuya Yamada,et al.: "Tissueーspecific expression of rat pyruvate kinase L/chloramphenicol acetyltransferase fusion gene in transgenic mice and its regulation by diet and insulin" Biochemical Biophysical Research Communication. 171. 243-249 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] Kazuya Yamada,et al.: "Identification and characterization of hepatocyteーspecific regulatory regions of the rat pyruvate kinase L gene.The synergistic effects of multiple elements." Journal of Biological Chemistry. 265. 19885-19891 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 野口 民夫: "ピルビン酸キナ-ゼの遺伝子調節機構と臨床応用" 臨床病理. 38. 868-875 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] Masaru Takenaka et al.: "Isolation and characterization of the human pyruvate kinase M gene" European Journal of Biochemistry. (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] Masaru Takenaka: "Rat pyruvate kinase M gene.Its complete structure and characterization of the 5'ーfianking region" Journal of Biological Chemistry. 264. 2363-2367 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] Kazuya Yamada: "Identification of hepatocyteーspecific regulatory regions of rat pyruvate kinase L gene" Journal of Biological Chemistry.

    • Related Report
      1989 Annual Research Report

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Published: 1989-04-01   Modified: 2016-04-21  

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