Using the CAG Promoter for Gene Expression in Stem Cells
Author Information
Author(s): Alexopoulou Annika N, Couchman John R, Whiteford James R
Primary Institution: National Heart and Lung Institute, Imperial College London
Hypothesis
Can the CAG promoter drive effective transgene expression during the differentiation of murine embryonic stem cells into vascular progenitors?
Conclusion
The CAG promoter is effective for long-term transgene expression during the differentiation of embryonic stem cells into mesodermal lineages.
Supporting Evidence
- The CAG promoter allowed for 100% expression of GFP in both undifferentiated and differentiated cells.
- Vectors with CMV and β-actin promoters showed very low levels of transgene expression.
- Differentiation of CCE cells into mesodermal lineages was successfully achieved using the CAG promoter.
Takeaway
Scientists found that a special tool called the CAG promoter helps keep genes working well in stem cells as they change into different types of cells.
Methodology
The study involved differentiating CCE mouse embryonic stem cells on collagen substrates and testing various promoter systems for transgene expression.
Limitations
The CMV and β-actin promoters were found to provide poor transgene expression during differentiation.
Digital Object Identifier (DOI)
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