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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...
Torsion of Noncircular Members01:16

Torsion of Noncircular Members

Circular shafts undergoing torsional stress maintain their cross-sectional integrity due to their axisymmetric nature. This symmetry ensures an even distribution of stress, allowing the shaft to withstand torsion without distorting. In contrast, square bars, lacking this axial symmetry, experience significant distortion across their cross-sections when subjected to torsion, with the exception of along their diagonals and at lines connecting midpoints. A detailed examination of a cubic element...
Nodal Analysis01:10

Nodal Analysis

Nodal analysis is a fundamental method in electrical engineering used to simplify the process of circuit analysis. This method revolves around the concept of using node voltages as the primary variables for circuit analysis. The objective is to determine the voltage at each node in a circuit, which can then be used to find other quantities of interest, such as currents through specific components.
Consider, for instance, a simple circuit composed of three nodes and three resistors, as shown in...
Anchoring Junctions01:03

Anchoring Junctions

Anchoring junctions are multiprotein complexes that help cells connect to other cells and the extracellular matrix. Anchoring junctions are present on the lateral and basal surfaces of cells, providing strong and flexible connections. Focal adhesions are often formed due to cell interactions with the ECM substrata, which initiate signal transduction via kinase cascades and other mechanisms. Together, they provide stability and tissue integrity. There are three types of anchoring junctions:...

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Related Experiment Video

Updated: Jul 2, 2026

Stimulation of Notch Signaling in Mouse Osteoclast Precursors
08:01

Stimulation of Notch Signaling in Mouse Osteoclast Precursors

Published on: February 28, 2017

It's T-ALL about Notch.

R M Demarest1, F Ratti, A J Capobianco

  • 1Molecular and Cellular Oncogenesis, The Wistar Institute, Philadelphia, PA 19104, USA.

Oncogene
|September 2, 2008
PubMed
Summary
This summary is machine-generated.

This review highlights the Notch pathway's critical role in T-cell acute lymphoblastic leukemia (T-ALL) development. It details how Ikaros and p53 tumor suppressors interact with Notch, driving T-ALL progression.

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Real-time Bioluminescence Imaging of Notch Signaling Dynamics during Murine Neurogenesis
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Real-time Bioluminescence Imaging of Notch Signaling Dynamics during Murine Neurogenesis

Published on: December 12, 2019

Related Experiment Videos

Last Updated: Jul 2, 2026

Stimulation of Notch Signaling in Mouse Osteoclast Precursors
08:01

Stimulation of Notch Signaling in Mouse Osteoclast Precursors

Published on: February 28, 2017

Real-time Bioluminescence Imaging of Notch Signaling Dynamics during Murine Neurogenesis
10:25

Real-time Bioluminescence Imaging of Notch Signaling Dynamics during Murine Neurogenesis

Published on: December 12, 2019

Area of Science:

  • Molecular oncology
  • Hematologic malignancies
  • Cell signaling pathways

Background:

  • T-cell acute lymphoblastic leukemia (T-ALL) presents a poor clinical outcome compared to B-cell acute lymphoblastic leukemia (B-ALL).
  • Understanding the molecular drivers of T-ALL is crucial for developing improved therapeutic strategies.
  • The Notch signaling pathway is implicated in various cellular processes, including T-cell development.

Purpose of the Study:

  • To elucidate the central role of the Notch pathway in the pathogenesis of T-ALL.
  • To explore the interplay between Notch signaling and key tumor suppressor proteins, Ikaros and p53.
  • To identify cooperating mutations that contribute to T-ALL development by aberrant Notch pathway activation.

Main Methods:

  • Literature review synthesizing current research on Notch signaling in T-ALL.
  • Analysis of molecular interactions between Notch, Ikaros, and p53.
  • Examination of genetic mutations affecting Notch signaling and downstream cellular processes.

Main Results:

  • The Notch pathway is a critical regulator in T-ALL development.
  • Loss of the Ikaros tumor suppressor, a direct repressor of Notch target genes, is essential for T-ALL.
  • Suppression of p53-mediated apoptosis is a key mechanism in T-ALL pathogenesis.
  • Combinations of mutations in pathways that modulate Notch signaling can mimic Notch effects, driving T-ALL.

Conclusions:

  • The Notch pathway is a pivotal oncogenic driver in T-ALL.
  • Coordinated loss of Ikaros and p53 function, alongside Notch activation, is fundamental for T-ALL initiation and progression.
  • Understanding these molecular interactions provides targets for novel T-ALL therapies.