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Directed differentiation of Human Embryonic Stem Cells to Neural Crest Stem Cells, Functional Peripheral Neurons, and Corneal Keratocytes

19:31 EDT 1 Aug 2017 | Wiley Biotechnology Journal

Neural crest stem cells (NCSCs) are a transient and multipotent cell population giving rise to various cell types with clinical importance. Isolation of human NCSCs is extremely challenging that limits our knowledge about neural crest development and application. Here, we present a defined protocol to efficiently direct human embryonic stem cells (hESCs) to NCSCs and multiple neural crest lineages. A unique combination of small molecule inhibitors and growth factors was employed to generate NCSCs from hESCs through a neuroectoderm stage. The self‐renewal and multipotent capacities of hESC‐derived NCSCs were assessed subsequently. In our feeder‐free system, hESC‐derived NCSCs (P75+/HNK1+/AP2α+/PAX6−) in high purity were efficiently generated following neuroectodermal restriction. They could be propagated and differentiated toward multiple neural crest lineages in vitro, such as functional peripheral neurons (β‐tubulin III+/peripherin+), mesenchymal stem cells (CD73+CD90+CD105+), and corneal keratocytes (keratocan+). The in vivo developmental potential of hESC‐derived NCSCs was confirmed using zebrafish embryos. This report is the first demonstration of efficient differentiation of hESCs into corneal keratocytes as a monolayer in a feeder‐free system. Considering the high efficacy of NCSC generation, this new method will be a useful tool for future clinical organ repair and regeneration, such as peripheral nerve regeneration and corneal repair.

Original Article: Directed differentiation of Human Embryonic Stem Cells to Neural Crest Stem Cells, Functional Peripheral Neurons, and Corneal Keratocytes

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