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Tumour suppressor genes

G Klein1

  • 1Department of Tumor Biology, Karolinska Institute, Stockholm, Sweden.

Journal of Cell Science. Supplement
|January 1, 1988
PubMed

Insights

Tumor suppressor genes, identified through various cell-based methods, counteract cancer-promoting genes. Further study of these genes alongside oncogenes may reveal shared functions in cancer biology.

Area of Science:

  • Molecular biology
  • Cancer genetics
  • Cell biology

Background:

  • Tumorigenic phenotype is regulated by specific genes.
  • Oncogenes promote tumor development.
  • Mechanisms for inhibiting tumor growth are being elucidated.

Purpose of the Study:

  • To review the detection methods for genes that inhibit the tumorigenic phenotype.
  • To discuss the diversity and potential functions of tumor suppressor genes.
  • To explore the relationship between tumor suppressor genes and oncogenes.

Main Methods:

  • Cell fusion techniques
  • Analysis of phenotypic reversion in transformed cells
  • Induction of terminal differentiation in malignant cell lines
  • Identification of regulatory sequences near oncogenes
  • Assay of normal cell products inhibiting tumor growth

Main Results:

  • Multiple approaches have identified genes capable of suppressing tumor formation.
  • Tumor suppressor genes are likely highly diverse, potentially exceeding oncogene diversity.
  • These genes operate through various mechanisms, including genetic loss and normal cell product inhibition.

Conclusions:

  • Tumor suppressor genes represent a critical counterpoint to oncogenes in cancer development.
  • Understanding both gene types is essential for a comprehensive view of cancer biology.
  • Further investigation may uncover interrelated functional properties between tumor suppressor genes and oncogenes.

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