Interplay between Notch signaling and epigenetic silencers in cancer

Maria Dominguez1

  • 1Instituto de Neurociencias, Consejo Superior de Investigaciones Cientificas-Universidad Miguel Hernández, Campus de Sant Joan, Alicante, Spain. m.dominguez@umh.es

Cancer Research
|September 20, 2006
PubMed

Insights

The Notch pathway

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • The Notch signaling pathway is crucial for tissue development and renewal.
  • Its role in tumor development is increasingly recognized, but mechanisms remain unclear.
  • Aberrant epigenetic gene silencing is a hallmark of many human cancers.

Purpose of the Study:

  • To investigate the poorly understood mechanisms by which Notch hyperactivation promotes oncogenesis.
  • To explore the link between Notch signaling, epigenetic silencing, and tumor suppressor genes in cancer.
  • To identify potential new therapeutic targets for Notch-associated cancers.

Main Methods:

  • Utilized Drosophila melanogaster as a model organism to study tumorigenesis.
  • Investigated the interplay between Notch pathway components and epigenetic regulators.
  • Examined the role of the tumor suppressor gene Rb in Notch-mediated oncogenesis.

Main Results:

  • Recent findings link the Notch pathway to epigenetic silencing during tumorigenesis in Drosophila.
  • This pathway appears to interact with the tumor suppressor gene Rb.
  • These interactions suggest a mechanism for Notch-driven cancer development.

Conclusions:

  • The Notch pathway's role in cancer may involve epigenetic gene silencing.
  • Findings provide a new perspective on Notch's association with human cancers.
  • This research could inform the development of targeted cancer therapies.

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...
Epigenetic Regulation01:37

Epigenetic Regulation

Epigenetic changes alter the physical structure of the DNA without changing the genetic sequence and often regulate whether genes are turned on or off. This regulation ensures that each cell produces only proteins necessary for its function. For example, proteins that promote bone growth are not produced in muscle cells. Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
X-chromosome...
Epigenetic Regulation01:46

Epigenetic Regulation

Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
Epigenetic Regulation01:46

Epigenetic Regulation

Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
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...