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The yin-yang of PR-domain family genes in tumorigenesis

G L Jiang1, S Huang

  • 1Program in Oncogenes and Tumor Suppressor Genes, Burnham Institute, La Jolla, CA 92037, USA.

Histology and Histopathology
|February 11, 2000
PubMed

Insights

Alterations in PR-domain genes contribute to cancer development. An imbalance between PR-plus and PR-minus protein products, driven by genetic or epigenetic changes, is a key factor in malignancy.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Cancer arises from genetic alterations, typically involving proto-oncogenes and tumor suppressor genes.
  • Malignant cell expansion requires multiple genetic changes.
  • A family of PR-domain genes has emerged as significant in tumorigenesis.

Purpose of the Study:

  • To discuss the role of PR-domain genes in human cancer.
  • To elucidate the unusual involvement of PR-domain gene products in tumorigenesis.

Main Methods:

  • Analysis of PR-domain gene family members.
  • Examination of protein product expression in cancer cells.

Main Results:

  • PR-domain gene family members produce two protein variants: PR-plus and PR-minus.
  • In cancer cells, the PR-plus product is disrupted or underexpressed.
  • Conversely, the PR-minus product is present or overexpressed in cancer cells.
  • This leads to an imbalance in the levels of the two products.

Conclusions:

  • The imbalance between PR-plus and PR-minus protein products is a significant cause of malignancy.
  • Genetic or epigenetic events driving this imbalance are crucial in cancer development.

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