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Updated: Jul 5, 2026
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Differentiation and Characterization of Neural Progenitors and Neurons from Mouse Embryonic Stem Cells
Published on: May 15, 2020
Embryonic stem cells as a platform for analyzing neural gene transcription
Xiaodong Zhang1, Scott A Horrell, Deany Delaney
1Department of Anatomy and Neurobiology, Box 8108, Washington University School of Medicine, 660 S. Euclid Avenue, St. Louis, Missouri 63110, USA.
Stem Cells (Dayton, Ohio)
|April 26, 2008
Summary
Embryonic stem cells (ESCs) provide a powerful model for studying mammalian gene regulation. This study shows the upstream regulatory region of the Olig2 gene contains a promoter essential for its specific expression in neural cells.
Area of Science:
- Developmental Biology
- Stem Cell Biology
- Molecular Genetics
Background:
- Analyzing transcriptional control of mammalian stem cell genes requires improved methods.
- Embryonic stem cells (ESCs) offer a versatile in vitro model for genetic manipulation and differentiation, circumventing the need for animal models.
- The transcription factor Olig2 is crucial for ventral nervous system and oligodendrocyte development.
Purpose of the Study:
- To investigate the functional role of the Olig2 upstream regulatory region (USR) in controlling gene expression.
- To demonstrate the utility of ESCs for analyzing cis-acting regulatory sequences in mammalian genes.
- To explore the mechanisms underlying Olig2 gene's specific expression during neural differentiation.
Main Methods:
- Utilized gene targeting in ESCs to delete the Olig2 USR.
- Differentiated engineered ESCs into ventral neural cells using sonic hedgehog and retinoic acid.
- Assessed Olig2 expression in differentiated cells and in cells with a defined Olig2 transgene insertion.
- Performed transient transfection assays to analyze promoter activity of a USR subregion.
Main Results:
- Deletion of the Olig2 USR via gene targeting abolished expression in differentiated ventral neural cells.
- The USR was found to be essential for regulated expression of an Olig2 transgene.
- A subregion of the USR exhibited non-specific promoter activity in non-expressing cells, suggesting repression contributes to specific expression.
- Data indicate the USR contains a promoter for the Olig2 gene.
Conclusions:
- The upstream regulatory region (USR) of the Olig2 gene contains a functional promoter.
- Repressive elements likely contribute to the specific expression of Olig2 in ventral neural cells.
- ESC-based technology is effective for studying cis-acting DNA elements and transcriptional control in mammalian genes.
- This approach facilitates research on gene regulation across various cell types and genes.
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00:57Embryonic Stem Cells
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