Comment on "Controlling long-term signaling: receptor dynamics determine attenuation and refractory behavior of the

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Studying TGF-β Signaling and TGF-β-induced Epithelial-to-mesenchymal Transition in Breast Cancer and Normal Cells
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Aryeh Warmflash1, Qixiang Zhang2, Ali H Brivanlou2

  • 1Center for Studies in Physics and Biology, The Rockefeller University, New York, NY 10065, USA. Laboratory of Molecular Vertebrate Embryology, The Rockefeller University, New York, NY 10065, USA. aryeh.warmflash@rice.edu.

Science Signaling
|September 25, 2014
PubMed

Insights

The transforming growth factor-β (TGF-β) pathway

Area of Science:

  • Cellular signaling pathways
  • Molecular biology
  • Developmental biology

Background:

  • The transforming growth factor-β (TGF-β) pathway is crucial for development and disease.
  • Signaling dynamics downstream of TGF-β ligand stimulation are not well understood.
  • Receptor dynamics influence Smad2/3 activity following TGF-β stimulation.

Discussion:

  • Cellular response to TGF-β involves a refractory period after receptor loss.
  • Transcriptional activity terminates independently of receptors and Smad2/3.
  • Smad2/3 activity does not accurately reflect transcriptional dynamics.

Key Insights:

  • TGF-β receptor dynamics control Smad2/3 activation.
  • Transcriptional signaling in the TGF-β pathway ends much earlier than Smad2/3 activity.
  • Downstream transcriptional events must be directly measured to understand signaling dynamics.

Outlook:

  • Further investigation into the mechanisms of receptor- and Smad2/3-independent transcriptional termination.
  • Exploring the implications of these findings for understanding TGF-β-related diseases.
  • Developing novel methods to directly measure transcriptional dynamics in real-time.

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