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Related Concept Videos

Cellular Differentiation00:57

Cellular Differentiation

How does a complex organism such as a human develop from a single cell? It all starts from a single fertilized egg which gives rise to a vast array of cell types, such as nerve cells, muscle cells, and epithelial cells that characterize the adult? Throughout development and adulthood, cellular differentiation leads cells to assume their final morphology and physiology. Differentiation is the process by which unspecialized cells become specialized to carry out distinct functions.
A zygote is a...
Determination01:51

Determination

During embryogenesis, cells become progressively committed to different fates through a two-step process: specification followed by determination. Specification is demonstrated by removing a segment of an early embryo, “neutrally” culturing the tissue in vitro—for example, in a petri dish with simple medium—and then observing the derivatives. If the cultured region gives rise to cell types that it would normally generate in the embryo, this means that it is specified. In contrast, determination...
Forced Transdifferentiation01:28

Forced Transdifferentiation

Transdifferentiation, also known as lineage reprogramming, was first discovered by Selman and Kafatos in 1974 in silkmoths. They observed that the moths’ cuticle-producing cells transformed into salt-producing cells. Many such cases of natural transdifferentiation occur in organisms. In humans, pancreatic alpha cells can become beta cells. In newts, the loss of the eye’s lens causes the pigmented epithelial cells to transdifferentiate into the lens cells.
Artificial transdifferentiation occurs...
Lineage Commitment01:21

Lineage Commitment

Commitment is the  process whereby stem cells:
iPS Cell Differentiation01:22

iPS Cell Differentiation

The ability of induced pluripotent stem cells or iPSCs to differentiate into most body cell types has stimulated repair and regenerative medicine research over the past few decades. iPSC-derived blood cells, hepatocytes, beta islet cells, cardiomyocytes, neurons, and other cell types can repair injuries or regenerate damaged tissue in diseases such as diabetes and neurodegenerative disorders.
Differentiation of Common Myeloid Progenitor Cells01:15

Differentiation of Common Myeloid Progenitor Cells

Common myeloid progenitors (CMPs) are oligopotent cells that can differentiate into granulocytes and macrophages. Granulocytes and macrophages are essential for protecting the body against bacterial, viral, or fungal infections. They migrate from the bone marrow into the circulating blood to reach specific tissue sites where they differentiate and help in immune surveillance. However, they survive only for a few days and must be continuously made available to the organism to maintain a robust...

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Related Experiment Video

Updated: May 26, 2026

Initiating Differentiation in Immortalized Multipotent Otic Progenitor Cells
12:17

Initiating Differentiation in Immortalized Multipotent Otic Progenitor Cells

Published on: January 2, 2016

Temporal competition between differentiation programs determines cell fate choice.

Anna Kuchina1, Lorena Espinar, Tolga Çağatay

  • 1Green Center for Systems Biology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.

Molecular Systems Biology
|December 8, 2011
PubMed
Summary
This summary is machine-generated.

Cell differentiation involves competing programs. In Bacillus subtilis, these programs race, with timing determining cell fate, not complex interactions before the decision point.

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Last Updated: May 26, 2026

Initiating Differentiation in Immortalized Multipotent Otic Progenitor Cells
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Published on: January 2, 2016

Directed Differentiation of Primitive and Definitive Hematopoietic Progenitors from Human Pluripotent Stem Cells
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Blastomere Explants to Test for Cell Fate Commitment During Embryonic Development
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Area of Science:

  • Microbiology
  • Cell Biology
  • Systems Biology

Background:

  • Multipotent differentiation allows cells to adopt various fates, crucial in diverse organisms.
  • Cell fate decisions are driven by simultaneous, interacting differentiation programs.
  • The precise mechanisms governing these interactions remain largely unknown.

Purpose of the Study:

  • To investigate how competing differentiation programs interact to influence cell fate choice.
  • To elucidate the regulatory mechanisms underlying cell differentiation decisions in single cells.

Main Methods:

  • Simultaneous measurement of competing sporulation and competence programs in individual Bacillus subtilis cells.
  • Engineering artificial cross-regulation between differentiation circuits to alter program timing.

Main Results:

  • Competing differentiation programs (sporulation and competence) in Bacillus subtilis progress independently without cross-regulation prior to the decision point.
  • Cell fate choice appears to be determined by the relative timing of these competing programs.
  • Altering the relative timing via engineered cross-regulation supported a dynamic 'molecular race' model.

Conclusions:

  • Cell fate determination can be a result of a simple 'molecular race' between simultaneously active differentiation programs.
  • Complex checkpoints or intricate pre-decision cross-regulation are not necessarily required for cell fate decisions.
  • This study provides a dynamic mechanism for understanding decision-making in cellular differentiation.