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Neural Stem Cells in Neurospheres, Embryoid Bodies, and Central Nervous System of Human Embryos

Published online by Cambridge University Press:  19 July 2011

A. Henry Sathananthan
A. Henry Sathananthan
Affiliation:
Monash Immunology and Stem Cell Laboratories, Monash, Medical, Nursing and Health Sciences, Clayton, Vic. 3800, Australia
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Abstract

The process of neurogenesis and formation of neural stem cells is reported in human neurospheres (NS) and embryoid bodies (EB) derived from human embryonic stem cells, in vitro, and compared with neural tissue formed in human ectopic embryos in week 4 (stage 9), developed in vivo. This morphological study was done using digital imaging by light microscopy and routine transmission electron microscopy. Both NS and EB form neural rosettes from the surface epithelium much like the process of neural tube formation from ectoderm in the embryo. The rosette is the developmental signature of neuroprogenitors in cultures of differentiating embryonic stem cells and is a radial arrangement of columnar cells that express many of the proteins expressed in neuroepithelial cells in the neural tube. The NS produce all of the major classes of progeny of the neural tube, some of which have been documented here. Specific neural markers expressed in the NS and the clinical implications of this study in cell therapy are also discussed.

Keywords

neural stem cellsrosettesneurospheresembryoid bodiesembryosTEM
Type
Research Article
Information
Microscopy and Microanalysis , Volume 17 , Issue 4 , August 2011 , pp. 520 - 527
Copyright
Copyright © Microscopy Society of America 2011

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