![]() Because of their broad potential, the possibility to isolate NCSCs from easily accessible tissue, and the recent accomplishment to generate NCSC-like cells from human ES and induced pluripotent stem (iPS) cells, NCSCs have become an ideal model system to study stem cell biology in development and disease. These postmigratory NCSCs functionally resemble their embryonic counterparts in their ability to differentiate into a variety of cell types. Intriguingly, such neural crest-derived stem cells (NCSCs) are not only present in the embryonic neural crest, but also in various neural crest-derived tissues in the fetal and even adult organism. Although neural crest cells undergo developmental restrictions with time, at least some neural crest cells have the capacity to self-renew and display a developmental potential almost only topped by embryonic stem (ES) cells. The neural crest is a transient embryonic structure in vertebrates that gives rise to most of the peripheral nervous system (PNS) and to several non-neural cell types, including smooth muscle cells of the cardiovascular system, pigment cells in the skin, and craniofacial bones, cartilage, and connective tissue.
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