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The c-Myb oncoprotein

T J Gonda1

  • 1Division of Human Immunology, Hanson Centre for Cancer Research, Institute of Medical and Veterinary Science, Adelaide, Australia. tom.gonda@imvs.sa.gov.au

The International Journal of Biochemistry & Cell Biology
|August 7, 1998
PubMed
Summary
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The c-myb gene, a transcription factor, is crucial in cell development and can cause cancer when abnormally expressed. Further research is needed to identify its specific roles in malignant diseases.

Area of Science:

  • Molecular Biology
  • Oncology
  • Genetics

Background:

  • The c-myb gene encodes a transcription factor (c-Myb) homologous to viral oncogenes.
  • c-Myb recognizes specific DNA sequences through a helix-turn-helix motif.
  • c-myb expression is vital in immature hematopoietic and gastrointestinal cells, decreasing during differentiation.

Purpose of the Study:

  • To investigate the role of c-myb in cellular transformation and its potential involvement in human cancers.
  • To identify critical target genes regulated by c-Myb that contribute to its transforming activity.

Main Methods:

  • Analysis of c-myb gene expression patterns in different cell types and differentiation states.
  • Investigating the transforming potential of c-Myb in hematopoietic cells in vitro and in vivo.

Related Experiment Videos

  • Reviewing existing literature on genes regulated by c-Myb and its association with tumors.

    • Main Results:

    • Enforced expression of c-Myb transforms hematopoietic cells, particularly of the myeloid lineage.
    • c-myb is down-regulated during cellular differentiation.
    • Increased c-myb expression is observed in colonic tumors.

    Conclusions:

    • c-myb plays a significant role in cellular differentiation and transformation.
    • The precise target genes mediating c-Myb's transforming activity remain to be identified.
    • c-myb may contribute to the development of human malignant diseases, such as colon cancer.