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Related Experiment Videos

Regulatory elements that modulate expression of human c-myc.

N Hay1, J M Bishop, D Levens

  • 1Department of Microbiology and Immunology, University of California, San Francisco 94143.

Genes & Development
|September 1, 1987
PubMed
Summary

Researchers identified regulatory elements controlling the human c-myc gene, crucial for cell growth and tumor formation. These elements balance gene activity, influencing cellular proliferation and potentially impacting cancer development.

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Area of Science:

  • Molecular Biology
  • Oncology
  • Gene Regulation

Background:

  • The proto-oncogene c-myc is critical for cellular proliferation.
  • Dysregulation of c-myc is implicated in the development of various tumors.

Purpose of the Study:

  • To investigate the regulatory mechanisms controlling human c-myc transcription.
  • To identify the specific elements governing c-myc promoter activity.

Main Methods:

  • Analysis of a 2.3-kb upstream DNA domain of the human c-myc gene.
  • Identification of positive and negative regulatory elements.
  • Investigation of nuclear protein binding to regulatory sequences.

Main Results:

  • A composite of positive and negative regulators controls human c-myc transcript abundance from P1 and P2 promoters.

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  • Positive regulatory elements dominate in actively proliferating cells.
  • Nuclear proteins specifically bind to sequences within identified regulatory elements.

    • Conclusions:

    • The interplay of regulatory elements contributes to the dynamic transcription of c-myc.
    • These regulatory mechanisms are potentially affected by tumorigenic damage to c-myc.