Notch and epithelial-mesenchyme transition in development and tumor progression: another turn of the screw

Joaquín Grego-Bessa1, Juan Díez, Luika Timmerman

  • 1Department of Immunology and Oncology, Centro Nacional de Biotecnología (CSIC), Campus Cantoblanco, Madrid, Spain.

Insights

The Notch signaling pathway regulates cell development and can act as an oncogene or tumor suppressor in cancer. Notch promotes epithelial-to-mesenchymal transition (EMT), a process crucial for tumor progression and invasion.

Area of Science:

  • Cellular signaling pathways
  • Developmental biology
  • Cancer research

Background:

  • The Notch signaling system is fundamental for cell fate, stem cell maintenance, and differentiation in embryonic and adult tissues.
  • Dysregulation of Notch signaling in adults is linked to various cancers, where it can function as either an oncogene or a tumor suppressor.
  • Notch signaling interacts with other pathways during cellular transformation.

Purpose of the Study:

  • To investigate the role of Notch signaling in epithelial-to-mesenchymal transition (EMT).
  • To explore the potential involvement of Notch in cancer progression via EMT.

Main Methods:

  • Analysis of Notch signaling pathways.
  • Investigation of Notch-induced EMT during cardiac valve formation.
  • Examination of snail induction and cadherin downregulation mechanisms.

Main Results:

  • Notch signaling was shown to promote EMT during cardiac valve development.
  • This promotion occurred through the induction of snail and subsequent downregulation of cadherins.
  • These findings suggest a conserved mechanism for Notch-mediated EMT.

Conclusions:

  • Notch signaling plays a role in EMT, a process critical for embryonic development.
  • The mechanism of Notch-induced EMT, involving snail and cadherins, may be relevant to tumor progression.
  • Notch signaling could be a key factor in the EMT process driving cancer invasion and metastasis.

Related Concept Videos

Notch Signaling Pathway03:14

Notch Signaling Pathway

The Notch signaling pathway is a major intracellular signaling pathway that is highly conserved over a broad spectrum of metazoan species. It stands unique from other intracellular signaling mechanisms in animals because notch protein itself acts as the receptor as well as the primary signaling molecule.
The Notch gene came into the limelight in 1914 after the discovery that its mutation in Drosophila melanogaster leads to a serrated (or "notched") wing margin phenotype. It was not until 1985...
Notch Signaling Pathway03:14

Notch Signaling Pathway

The Notch signaling pathway is a major intracellular signaling pathway that is highly conserved over a broad spectrum of metazoan species. It stands unique from other intracellular signaling mechanisms in animals because notch protein itself acts as the receptor as well as the primary signaling molecule.
The Notch gene came into the limelight in 1914 after the discovery that its mutation in Drosophila melanogaster leads to a serrated (or "notched") wing margin phenotype. It was not until 1985...
Role Of Notch Signalling In Intestinal Stem Cell Renewal01:12

Role Of Notch Signalling In Intestinal Stem Cell Renewal

Notch signaling was first discovered in Drosophila melanogaster, where it is involved in cell lineage differentiation. Notch signaling regulates the maintenance and differentiation of intestinal stem cells or ISCs by controlling the expression of atonal homolog 1 or Atoh1. Atoh1 directs cells to differentiate into secretory cells.
Direct cell-to-cell contact is needed for the activation of Notch signaling. The signal is initiated when a notch ligand binds to a receptor on an adjacent cell, also...
Cadherins in Tissue Organization01:19

Cadherins in Tissue Organization

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Tumor Progression02:07

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