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Notch Signaling Pathway

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 Pathway

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 Renewal

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...

Renewal of Skin Epidermal Stem Cells

Renewal of Skin Epidermal Stem Cells

The skin is divided into epidermis, dermis, and hypodermis, the skin's outermost, middle, and inner layers. The human epidermal layer regularly undergoes renewal, where old, dead cells are replaced by new cells. Epidermal stem cells or EpiSCs divide and differentiate to restore the lost cells. For the renewal process, some EpiSCs continuously self-renew. In contrast, few others differentiate into transit-amplifying cells, which later form prickle or spinous cells, followed by granular cells,...

Hedgehog Signaling Pathway

Hedgehog Signaling Pathway

The Hedgehog gene (Hh) was first discovered due to its control of the growth of disorganized, hair-like bristles phenotype in Drosophila, much like hedgehog spines. Hh plays a crucial role in the development of organs and the maintenance of homeostasis in both invertebrates and vertebrates. However, while Drosophila has only one Hh protein, mammals have multiple functional Hedgehog proteins - Sonic (Shh), Desert (Dhh), and Indian Hedgehog (Ihh). All of these homologous proteins have adapted to...

Hedgehog Signaling Pathway

Hedgehog Signaling Pathway

The Hedgehog gene (Hh) was first discovered due to its control of the growth of disorganized, hair-like bristles phenotype in Drosophila, much like hedgehog spines. Hh plays a crucial role in the development of organs and the maintenance of homeostasis in both invertebrates and vertebrates. However, while Drosophila has only one Hh protein, mammals have multiple functional Hedgehog proteins - Sonic (Shh), Desert (Dhh), and Indian Hedgehog (Ihh). All of these homologous proteins have adapted to...

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Related Experiment Video

Updated: May 24, 2026

Generation of Genetically Modified Organotypic Skin Cultures Using Devitalized Human Dermis

Generation of Genetically Modified Organotypic Skin Cultures Using Devitalized Human Dermis

Published on: December 14, 2015

Notch signaling and the developing skin epidermis.

Daniela Massi¹, John Panelos

¹Department of Critical Care Medicine and Surgery, University of Florence, Florence, Italy. Daniela.Massi@unifi.it

Advances in Experimental Medicine and Biology

|March 9, 2012

Summary

The skin epidermis relies on stem cell proliferation and differentiation for barrier function. Notch signaling is crucial for orchestrating these epidermal processes throughout life.

Area of Science:

Dermatology
Cell Biology
Molecular Biology

Background:

The skin epidermis forms a protective barrier maintained by stem cell activity.
Stem cell proliferation and differentiation are vital for epidermal homeostasis.
The Notch signaling pathway is a conserved regulator of cell fate.

Purpose of the Study:

To elucidate the role of Notch signaling in epidermal stem cell proliferation and differentiation.
To understand how Notch signaling orchestrates epidermal development and maintenance.

Main Methods:

Analysis of Notch pathway components (ligands, receptors).
Investigating downstream signaling events.
Studying stem cell behavior in the epidermis.

More Related Videos

Rapid Genetic Analysis of Epithelial-Mesenchymal Signaling During Hair Regeneration

Rapid Genetic Analysis of Epithelial-Mesenchymal Signaling During Hair Regeneration

Published on: February 28, 2013

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

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

Published on: December 12, 2019

Related Experiment Videos

Last Updated: May 24, 2026

Generation of Genetically Modified Organotypic Skin Cultures Using Devitalized Human Dermis

Generation of Genetically Modified Organotypic Skin Cultures Using Devitalized Human Dermis

Published on: December 14, 2015

Rapid Genetic Analysis of Epithelial-Mesenchymal Signaling During Hair Regeneration

Rapid Genetic Analysis of Epithelial-Mesenchymal Signaling During Hair Regeneration

Published on: February 28, 2013

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

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

Published on: December 12, 2019

Main Results:

Notch signaling is essential for regulating epidermal stem cell proliferation.
The pathway directs the differentiation of epidermal progenitor cells.
Sequential activation of Notch components controls epidermal homeostasis.

Conclusions:

Notch signaling is a key regulator of epidermal stem cell dynamics.
Understanding Notch pathway activity is critical for skin barrier function.
This pathway is a potential target for dermatological therapies.