Related Experiment Video
Updated: Jun 4, 2026

09:38
Preparation of Mouse Embryonic Fibroblast Cells Suitable for Culturing Human Embryonic and Induced Pluripotent Stem Cells
Published on: June 21, 2012
Activin/nodal signaling and pluripotency
Zhenzhi Chng1, Ludovic Vallier, Roger Pedersen
1Institute of Medical Biology, Singapore, Singapore.
Vitamins and Hormones
|March 1, 2011
Summary
Embryonic stem cells maintain pluripotency, crucial for development. The Activin/Nodal pathway is key to controlling stem cell pluripotency and differentiation for regenerative medicine applications.
Area of Science:
- Developmental Biology
- Stem Cell Biology
- Molecular Signaling
Background:
- Pluripotent stem cells, including embryonic stem cells, are vital for mammalian development.
- These cells proliferate indefinitely in vitro and can differentiate into all three germ layers.
- Understanding stem cell regulation is essential for regenerative medicine.
Purpose of the Study:
- To differentiate between various pluripotent cell types.
- To explore the molecular mechanisms of Activin/Nodal signaling in pluripotency and differentiation.
- To provide knowledge-based strategies for stem cell manipulation.
Main Methods:
- Comparative analysis of pluripotent cell types.
- Review of current literature on Activin/Nodal signaling pathways.
- Molecular mechanism investigation.
Main Results:
- Differences among pluripotent cell types were elucidated.
- Key roles of Activin/Nodal signaling in maintaining pluripotency were identified.
- Insights into differentiation control by Activin/Nodal were discussed.
Conclusions:
- Activin/Nodal signaling is a critical regulator of stem cell pluripotency and differentiation.
- This pathway offers potential targets for stem cell therapies.
- Further research can advance regenerative medicine strategies.
Related Concept Videos
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...
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
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...
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
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...
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...
Somatic to iPS Cell Reprogramming
Reprogramming alters the gene expression in somatic cells, transforming them into induced pluripotent stem (iPS) cells over several generations. Scientists can reprogram cells by introducing genes for four transcription factors—Oct4, Sox2, Klf4, and c-Myc (OSKM) by viral or non-viral methods. These factors are also known as Yamanaka factors after Shinya Yamanaka, who first generated iPS cells using mouse skin cells. Yamanaka was awarded the Nobel Prize in Physiology or Medicine in 2012 for this...
Induced Pluripotent Stem Cells
Stem cells are undifferentiated cells that divide and produce different types of cells. Ordinarily, cells that have differentiated into a specific cell type are post-mitotic—that is, they no longer divide. However, scientists have found a way to reprogram these mature cells so that they “de-differentiate” and return to an unspecialized, proliferative state. These cells are also pluripotent like embryonic stem cells—able to produce all cell types—and are therefore called induced pluripotent stem...
Induced Pluripotent Stem Cells
Stem cells are undifferentiated cells that divide and produce different cell types. Ordinarily, cells that have differentiated into a specific cell type are terminally differentiated; however, scientists have found a way to reprogram these mature cells so that they dedifferentiate and return to an unspecialized, proliferative state. These cells are pluripotent like embryonic stem cells—able to produce all cell types—and are called induced pluripotent stem cells (iPSCs).
Somatic cells are...
Somatic cells are...

