Abstract

Culturing pluripotent embryonic stem cells represents a unique model system for in vitro studies of embryo cell growth and differentiation, and represents a connection between in vitro and in vivo manipulation of genes. To further develop and refine stem cell technology for marine fish, we have established cultures of embryonic stem cells isolated from turbot blastulas. The pluripotent nature of our turbot-ES-like cells was supported by their morphology and elevated levels of alkaline phosphatase enzyme activity, their ability to remain undifferentiated for a prolonged culture period, their spontaneous differentiation potential in vitro and their ability to form embryoid bodies (EB) in response to changes in the extracellular environment. In addition, we show that turbot ES like cells express Oct-4 required for the maintenance of pluripotency of ES cells.

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