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Pleiotropy01:33

Pleiotropy

Pleiotropy is the phenomenon in which a single gene impacts multiple, seemingly unrelated phenotypic traits. For example, defects in the SOX10 gene cause Waardenburg Syndrome Type 4, or WS4, which can cause defects in pigmentation, hearing impairments, and an absence of intestinal contractions necessary for elimination. This diversity of phenotypes results from the expression pattern of SOX10 in early embryonic and fetal development. SOX10 is found in neural crest cells that form melanocytes,...
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Embryonic Stem Cells

Embryonic stem (ES) cells are undifferentiated pluripotent cells, meaning they can produce any cell type in the body. This gives them tremendous potential in science and medicine since they can generate specific cell types for use in research or to replace body cells lost due to damage or disease.
Embryonic Stem Cells00:57

Embryonic Stem Cells

Embryonic stem (ES) cells were first discovered in mice in 1981 by Martin Evans. In 1998, James Thomson identified a method to isolate embryonic stem cells from humans. Human embryonic stem cells (hESCs) are obtained from 3-5 day old embryos that remain unused after an in vitro fertilization procedure.
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Related Experiment Video

Updated: Jun 20, 2026

The "Brain Milking" Method for the Isolation of Neural Stem Cells and Oligodendrocyte Progenitor Cells from Live Rats
06:52

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Published on: February 9, 2024

Sox2 roles in neural stem cells.

Larysa H Pevny1, Silvia K Nicolis

  • 1Department of Genetics, University of North Carolina Neuroscience Center, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA. larysa_pevny@med.unc.edu

The International Journal of Biochemistry & Cell Biology
|September 8, 2009
PubMed
Summary
This summary is machine-generated.

Sox2 is crucial for maintaining neural stem cells and guiding neuron development in the vertebrate eye and brain. Its function is dose-dependent, impacting specific neuron subtypes and revealing underlying mechanisms.

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Area of Science:

  • Developmental biology
  • Neuroscience
  • Genetics

Background:

  • Sox2 is a key transcription factor present throughout vertebrate evolution.
  • It marks the earliest precursor and stem cells in the developing nervous system.

Purpose of the Study:

  • To investigate the function of Sox2 in the developing eye and brain.
  • To understand the role of Sox2 in neural stem cell maintenance and neuronal differentiation.

Main Methods:

  • Gene targeting studies in neuronal systems.
  • Analysis of Sox2's role in stem cell maintenance.
  • Investigation of downstream target genes.

Main Results:

  • Sox2 is required for maintaining neural stem cells.
  • Sox2 plays a role in the differentiation of specific neuron subtypes.
  • Sox2's function is dose-dependent in both eye and brain development.

Conclusions:

  • Sox2 is essential for neural stem cell maintenance and neuronal differentiation.
  • The dose-dependent nature of Sox2 highlights its regulatory importance.
  • Ongoing research is elucidating the molecular mechanisms of Sox2 function.