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Related Experiment Videos

Characterization of a candidate bcl-1 gene.

D A Withers1, R C Harvey, J B Faust

  • 1Department of Medicine, University of California, San Francisco.

Molecular and Cellular Biology
|October 1, 1991
PubMed
Summary

Researchers identified the bcl-1 gene, a cyclin family member, linked to human B-lymphocytic malignancy. This gene

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Area of Science:

  • Genetics
  • Oncology
  • Molecular Biology

Background:

  • The t(11;14)(q13;q32) translocation is linked to human B-lymphocytic malignancy.
  • This translocation joins the immunoglobulin heavy-chain gene to the bcl-1 locus.
  • The bcl-1 gene, a potential dominant oncogene, remained unidentified.

Purpose of the Study:

  • To identify and characterize the bcl-1 gene.
  • To investigate the role of bcl-1 in cell cycle regulation and oncogenesis.

Main Methods:

  • Isolation of genomic clones from the bcl-1 locus.
  • Identification of a candidate bcl-1 gene using specific probes.
  • Cloning of bcl-1 mRNA cDNAs from cell lines.

Main Results:

  • The bcl-1 gene was identified and found to be a member of the cyclin gene family.
  • bcl-1 mRNA is widely expressed in human cell lines, except in lymphoid or myeloid lineages.
  • The deduced amino acid sequence confirmed bcl-1's cyclin family membership.

Conclusions:

  • The bcl-1 gene is a cyclin, potentially acting as a dominant oncogene.
  • Altered cell cycle control due to bcl-1 activation may drive oncogenesis.
  • Differential bcl-1 expression suggests distinct cell cycle regulation mechanisms in various tissues.

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