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Maintenance of the ES Cell State01:14

Maintenance of the ES Cell State

The cells of the blastocyst inner cell mass only remain pluripotent for a short time. This state of pluripotency and self-renewal can be maintained in embryonic stem (ES) cell culture by adding specific chemicals or growth factors to ensure the cells can continue dividing and later differentiate into different cell types. In some cases, the cells are grown on a feeder layer of differentiated cells, which provides the growth factors and extracellular matrix components necessary for stem cell...
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The development of all multicellular organisms starts with the fusion of haploid cells called sperm and egg to form a diploid zygote. A zygote is a totipotent cell that can develop into a complete organism. The zygote undergoes cell division or cleavage to form an 8-cell mass. Until this stage, the cells are spherical, loosely attached, and remain totipotent. Totipotent cells are capable of developing both the embryonic and the extraembryonic tissues. However, as they continue to divide, they...
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Related Experiment Video

Updated: Jun 18, 2026

Oct4GiP Reporter Assay to Study Genes that Regulate Mouse Embryonic Stem Cell Maintenance and Self-renewal
08:01

Oct4GiP Reporter Assay to Study Genes that Regulate Mouse Embryonic Stem Cell Maintenance and Self-renewal

Published on: May 30, 2012

Preview. Stem cell transcriptional loops generate precise temporal identity.

Minoree Kohwi1, Chris Q Doe

  • 1Institute of Neuroscience, University of Oregon, Eugene, OR 97405, USA; Institute of Molecular Biology, University of Oregon, Eugene, OR 97405, USA; Howard Hughes Medical Institute, University of Oregon, Eugene, OR 97405, USA.

Cell Stem Cell
|December 3, 2009
PubMed
Summary
This summary is machine-generated.

Multiple transcriptional cascades control neuron development from single stem cells. This study reveals how these cascades regulate the timing and specification of distinct neurons in Drosophila embryos.

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Related Experiment Videos

Last Updated: Jun 18, 2026

Oct4GiP Reporter Assay to Study Genes that Regulate Mouse Embryonic Stem Cell Maintenance and Self-renewal
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Published on: May 30, 2012

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Published on: September 14, 2018

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Published on: May 29, 2014

Area of Science:

  • Developmental biology
  • Neuroscience
  • Genetics

Background:

  • Neuronal diversity arises from progenitor cells with changing fate potentials.
  • Understanding the regulation of neuronal specification is crucial for developmental neuroscience.

Purpose of the Study:

  • To investigate the regulatory mechanisms governing neuronal fate specification from a single progenitor.
  • To elucidate the role of transcriptional cascades in temporal patterning of neuronal subtypes.

Main Methods:

  • Utilized Drosophila melanogaster as a model organism.
  • Employed genetic analysis to identify and characterize transcriptional regulators.
  • Investigated the temporal dynamics of gene expression during neurogenesis.

Main Results:

  • Identified multiple, simultaneously activated transcriptional cascades.
  • Demonstrated that these cascades control the timing of neuronal differentiation.
  • Showed that distinct neuron types are specified through these temporally regulated cascades.

Conclusions:

  • Simultaneously activated transcriptional cascades are key regulators of neuronal diversity.
  • Temporal control of gene expression by these cascades dictates specific neuronal fates.
  • This mechanism provides a framework for understanding how a single progenitor generates varied neuronal types.