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Transcriptional control by E2F

P D Adams1, W G Kaelin

  • 1Dana Farber Cancer Institute, Boston, MA, USA.

Seminars in Cancer Biology
|April 1, 1995
PubMed

Insights

The E2F transcription factor family is crucial for controlling cell growth. Deregulation of E2F by viruses and cell cycle regulators impacts DNA replication and tumor formation.

Area of Science:

  • Molecular Biology
  • Cell Biology
  • Oncology

Background:

  • The E2F/DRTF1 transcription factor family (E2F) is implicated in cell growth control.
  • Viral transformation and cell cycle regulation are linked to E2F activity.

Purpose of the Study:

  • To elucidate the role of E2F in cell growth regulation.
  • To understand how viral oncoproteins and cell cycle regulators affect E2F.

Main Methods:

  • Review of existing evidence on E2F function.
  • Analysis of E2F's role in viral oncogenesis.
  • Examination of E2F interactions with cell cycle regulators.

Main Results:

  • E2F directly regulates genes involved in DNA replication and cell growth.
  • Viral transformation by SV40, adenovirus, and HPV is associated with E2F deregulation.
  • Cell cycle regulators like pRb, p53, CDKs, and cyclins modulate E2F activity.

Conclusions:

  • E2F is a central regulator of cell proliferation.
  • E2F deregulation is a key mechanism in viral-induced cell transformation.
  • Interference with E2F by mutated cell cycle proteins contributes to tumorigenesis.

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