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Differentiation of Mouse Embryonic Stem Cells into Cortical Interneuron Precursors
Published on: December 3, 2017
Metabolic specialization of mouse embryonic stem cells.
J Wang1, P Alexander, S L McKnight
1Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, Texas 75390-9152, USA.
Cold Spring Harbor Symposia on Quantitative Biology
|November 11, 2011
Summary
Mouse embryonic stem cells utilize threonine as a metabolic fuel via the threonine dehydrogenase (TDH) enzyme. This metabolic state is crucial for their rapid growth, pluripotency, and viability.
Area of Science:
- Stem Cell Biology
- Metabolic Regulation
- Biochemistry
Background:
- Mouse embryonic stem (ES) cells possess unique characteristics: small size, rapid division, lack of senescence, and pluripotency.
- These properties suggest a specialized metabolic state potentially underlying their unique biology.
Purpose of the Study:
- To investigate the metabolic state of mouse ES cells.
- To determine if unique metabolic features contribute to their unusual properties.
Main Methods:
- Analysis of metabolite abundance during differentiation of mouse ES cells into embryoid bodies.
- Nutritional and pharmacological studies to assess the role of threonine and threonine dehydrogenase (TDH).
Main Results:
- Significant changes in metabolite abundance related to one-carbon metabolism were observed during ES cell differentiation.
- Mouse ES cells were found to use threonine dehydrogenase (TDH) to convert threonine into acetyl-coenzyme A and glycine.
- Mouse ES cells demonstrated critical dependence on threonine and TDH for growth and viability.
Conclusions:
- Mouse ES cells rely on a specialized metabolic pathway involving threonine dehydrogenase.
- Threonine serves as a key metabolic fuel for mouse ES cell proliferation and survival.
- Targeting this metabolic dependency could offer insights into stem cell regulation.
