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Related Concept Videos

Lineage Commitment01:21

Lineage Commitment

Commitment is the  process whereby stem cells:
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...
Molecular Factors Affecting Cell Division01:27

Molecular Factors Affecting Cell Division

Several external and internal factors influence the initiation and inhibition of cell division. For instance, the death of nearby cells or the release of human growth hormone (hGH) promotes cell division. In contrast, lack of hGH or crowding of cells can inhibit cell division.
Several proteins function as internal regulators to ensure each cell cycle stage is completed faithfully before proceeding to the next. Regulator molecules may act directly or influence the activity or production of other...
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...
Oxygen Requirements and Growth Patterns01:29

Oxygen Requirements and Growth Patterns

Microorganisms exhibit diverse oxygen requirements and growth patterns driven by their metabolic strategies and environmental adaptations. Oxygen, while essential for many organisms, can also be toxic under certain conditions, shaping how microorganisms grow and survive.Oxygen Requirements of MicroorganismsMicroorganisms are classified based on their ability to use or tolerate oxygen:● Obligate aerobes like Mycobacterium tuberculosis need oxygen for energy production, as it serves as the...

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Related Experiment Video

Updated: Jun 21, 2026

Blastomere Explants to Test for Cell Fate Commitment During Embryonic Development
14:08

Blastomere Explants to Test for Cell Fate Commitment During Embryonic Development

Published on: January 26, 2013

Oxygen and Cell Fate Decisions.

Qun Lin1, Yuri Kim, Rodolfo M Alarcon

  • 1Department of Therapeutic Radiology, Yale University School of Medicine, New Haven, CT 06520, U.S.A.

Gene Regulation and Systems Biology
|July 17, 2009
PubMed
Summary
This summary is machine-generated.

Molecular oxygen is crucial for biological processes. Low oxygen levels (hypoxia) maintain stem cell pluripotency and impact embryonic development, influencing cell fate decisions.

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Last Updated: Jun 21, 2026

Blastomere Explants to Test for Cell Fate Commitment During Embryonic Development
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Blastomere Explants to Test for Cell Fate Commitment During Embryonic Development

Published on: January 26, 2013

Affordable Oxygen Microscopy-Assisted Biofabrication of Multicellular Spheroids
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Affordable Oxygen Microscopy-Assisted Biofabrication of Multicellular Spheroids

Published on: April 6, 2022

Area of Science:

  • Cell Biology
  • Developmental Biology
  • Stem Cell Biology

Background:

  • Molecular oxygen is vital for numerous biological functions, including respiration and cardiovascular activity.
  • Emerging research highlights oxygen's significant influence on embryonic development, stem cell maintenance, and cell differentiation.
  • Key biological processes like early embryonic development and hematopoietic stem cell localization occur in hypoxic environments.

Purpose of the Study:

  • To review recent advances in molecular oxygen biology.
  • To discuss the impact of oxygen levels on stem cell pluripotency and cell fate.
  • To explore the role of hypoxia in embryonic development.

Main Methods:

  • Literature review of current observations and genetic studies.
  • Analysis of the role of hypoxia-inducible factors (HIFs).
  • Synthesis of findings on oxygen's impact on fundamental biological processes.

Main Results:

  • Hypoxia appears to inhibit cellular differentiation, preserving stem/progenitor cell pluripotency.
  • Hypoxia-inducible factors 1-alpha and 2-alpha are critical for embryonic development.
  • Oxygen levels significantly regulate stem cell maintenance and cell fate decisions.

Conclusions:

  • Molecular oxygen plays a fundamental role in stem cell biology and cell fate regulation.
  • Understanding oxygen's biological impact is crucial for fields like regenerative medicine and developmental biology.
  • Further research into oxygen's role can unlock new therapeutic strategies.