Signaling inputs converge on nuclear effectors in TGF-beta signaling

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Studying TGF-β Signaling and TGF-β-induced Epithelial-to-mesenchymal Transition in Breast Cancer and Normal Cells
06:54

Studying TGF-β Signaling and TGF-β-induced Epithelial-to-mesenchymal Transition in Breast Cancer and Normal Cells

Published on: October 27, 2020

P ten Dijke1, K Miyazono, C H Heldin

  • 1Ludwig Institute for Cancer Research, Box 595, S-751 24 Uppsala, Sweden. ptdijke@nki.nl

Trends in Biochemical Sciences
|February 9, 2000
PubMed

Insights

Smad proteins are key intracellular signals for TGF-beta family members. They form complexes that regulate gene expression in the nucleus, acting as crucial signal integrators.

Area of Science:

  • Molecular Biology
  • Cell Signaling
  • Genetics

Background:

  • Transforming Growth Factor-beta (TGF-beta) signaling pathways are crucial for cellular processes.
  • Smad proteins are known intracellular mediators in these pathways.
  • Understanding Smad function is key to deciphering TGF-beta family signaling.

Purpose of the Study:

  • To elucidate the role of Smad proteins as intracellular effectors of TGF-beta family members.
  • To describe the mechanism of Smad activation and nuclear translocation.
  • To highlight Smads' function as signal integrators.

Main Methods:

  • Review of recent studies on Smad proteins and TGF-beta signaling.
  • Analysis of Smad protein complex formation and nuclear translocation.
  • Examination of Smad-mediated gene expression control.

Main Results:

  • Smad proteins are pivotal intracellular effectors for TGF-beta family members.
  • Receptor-regulated Smads complex with common-partner Smads upon activation.
  • These complexes translocate to the nucleus to control cell-type-specific gene expression.

Conclusions:

  • Smads act as nuclear effectors for TGF-beta signaling.
  • Smads integrate signals within a complex intracellular network.
  • Smad proteins are central to TGF-beta family-mediated cellular responses.

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