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Related Experiment Videos

Nuclear/growth factors

A Prochiantz1, L Théodore

  • 1CNRS URA 1414, Développement et Evolution du Système Nerveux, Ecole Normale Supérieure, Paris, France.

Bioessays : News and Reviews in Molecular, Cellular and Developmental Biology
|January 1, 1995
PubMed
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Some growth factors directly influence gene transcription after entering the nucleus, challenging classical cell communication models. This suggests novel mechanisms for cellular interaction and information transfer.

Area of Science:

  • Cell Biology
  • Molecular Biology
  • Genetics

Background:

  • Classical cell-cell communication involves cell-surface receptors and signal transduction.
  • Transcriptional modifications are the typical outcome of these signaling pathways.

Purpose of the Study:

  • To explore alternative mechanisms of cell-cell communication.
  • To investigate the direct nuclear actions of growth factors.
  • To propose a new model for intercellular information transfer.

Main Methods:

  • Review and synthesis of existing scientific literature.
  • Analysis of studies demonstrating growth factor internalization and nuclear translocation.
  • Hypothesizing novel roles for nuclear factors in cell communication.

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Main Results:

  • Evidence suggests certain growth factors (e.g., FGF-1, FGF-2, SDGF) translocate to the nucleus.
  • These factors may directly modulate gene transcription.
  • A hypothesis is proposed for cell-to-cell transfer of homeoprotein isoforms.

Conclusions:

  • Cell-cell communication may involve direct nuclear interference by internalized factors.
  • This expands our understanding beyond cell-surface receptor interactions.
  • The model has implications for the specificity of cellular interactions.