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Nucleocytoplasmic shuttling of transcription factors

P Cartwright1, K Helin

  • 1Department of Experimental Oncology, European Institute of Oncology, Milan, Italy.

Cellular and Molecular Life Sciences : CMLS
|October 12, 2000
PubMed

Insights

Transcription factors shuttle between the nucleus and cytoplasm to regulate gene expression. This review details common and unique pathways for transcription factor nuclear transport, crucial for cell cycle progression.

Area of Science:

  • Cell Biology
  • Molecular Biology
  • Genetics

Background:

  • Cellular signals require nuclear transmission for transcriptional response.
  • Nucleocytoplasmic shuttling of transcription factors is a key mechanism for signal transduction.
  • Proper cell cycle progression depends on regulated transcriptional activation and inactivation.

Purpose of the Study:

  • To review the general mechanisms of nuclear import and export for transcription factors.
  • To highlight the diverse regulatory pathways for transcription factor activation and inactivation.
  • To discuss the role of accessory molecules and nuclear transport components.

Main Methods:

  • Literature review of nuclear transport mechanisms.
  • Analysis of common pathways for transcription factor import/export.
  • Case studies of diverse transcription factor regulation.

Main Results:

  • Common principles govern nuclear import and export across various transcription factors.
  • Specific differences in transport mechanisms allow for distinct transcription factor regulation.
  • Accessory molecules and nuclear pore complexes are vital for nucleocytoplasmic transport.

Conclusions:

  • Nucleocytoplasmic shuttling is essential for dynamic transcriptional regulation.
  • Understanding these pathways is key to comprehending cell cycle control and cellular responses.
  • The diversity in transcription factor regulation underscores cellular complexity.

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