Isolation and Expansion of Endothelial Progenitor Cells Derived from Mouse Embryonic Stem Cells
The unlimited differentiation and proliferation capacity of embryonic stem cells represents a great resource for regenerative medicine. Here, we describe a method for differentiating, isolating, and expanding endothelial cells (ECs) from mouse embryonic stem cells (mESCs). First, mESCs are expanded on a mouse embryonic fibroblast (mEF) feeder layer and partially differentiated into embryoid bodies (EBs) by growing the cells in an ultra-low attachment plate for up to 5 days. The EBs are then differentiated along the endothelial lineage using endothelial growth medium supplemented with 40 ng/mL vascular endothelial growth factor (VEGF). The differentiated endothelial population expresses both Fetal Liver Kinase 1 (Flk-1) and VE-Cadherin on the cell surface which can be further purified using a fluorescence-activated cell sorting (FACS) system and subsequently expanded on 0.1 % gelatin-coated plates. The differentiated cells can be analyzed by real-time PCR and flow cytometry to confirm enrichment of EC-specific genes and proteins.
Key wordsEmbryonic stem cells Differentiation FACS Endothelial cells
This work is supported by grants from NIH/NCI TMEN grant (U54CA126552.) to Nancy Boudreau and Mina J Bissell and U.S. Department of Energy, Office of Biological and Environmental Research (DE-AC02-05CH1123), a Distinguished Fellow Award and Low Dose Radiation Program (03-76SF00098) to Mina J. Bissell. Mandana Veiseh was supported by a postdoctoral fellowship from the NCI of the NIH (F32 CA132491A). We thank Pamela Derish in the Department of Surgery at UCSF for editorial review of the manuscript.
- 5.Blancas AA, Lauer NE, McCloskey KE (2008) Endothelial differentiation of embryonic stem cells. Curr Protoc Stem Cell Biol Chapter 1. Unit 1 F 5.Google Scholar