title: Lineage-restricted neural precursors can be isolated from both the mouse neural tube and cultured ES cells.
abstract: We have previously identified multipotent neuroepithelial (NEP) stem cells and lineage-restricted, self-renewing precursor cells termed NRPs (neuron-restricted precursors) and GRPs (glial-restricted precursors) present in the developing rat spinal cord (A. Kalyani, K. Hobson, and M. S. Rao, 1997, Dev. Biol. 186, 202-223; M. S. Rao and M. Mayer-Proschel, 1997, Dev. Biol. 188, 48-63; M. Mayer-Proschel, A. J. Kalyani, T. Mujtaba, and M. S. Rao, 1997, Neuron 19, 773-785). We now show that cells identical to rat NEPs, NRPs, and GRPs are present in mouse neural tubes and that immunoselection against cell surface markers E-NCAM and A2B5 can be used to isolate NRPs and GRPs, respectively. Restricted precursors similar to NRPs and GRPs can also be isolated from mouse embryonic stem cells (ES cells). ES cell-derived NRPs are E-NCAM immunoreactive, undergo self-renewal in defined medium, and differentiate into multiple neuronal phenotypes in mass culture. ES cells also generate A2B5-immunoreactive cells that are similar to E9 NEP-cell-derived GRPs and can differentiate into oligodendrocytes and astrocytes. Thus, lineage restricted precursors can be generated in vitro from cultured ES cells and these restricted precursors resemble those derived from mouse neural tubes. These results demonstrate the utility of using ES cells as a source of late embryonic precursor cells.
authors.affiliation: Department of Neurobiology and Anatomy, University of Utah School of Medicine, 50 North Medical Drive, Salt Lake City, Utah 84132, USA.
authors.forename: T
authors.initials: T
authors.lastname: Mujtaba
authors.forename: D R
authors.initials: DR
authors.lastname: Piper
authors.forename: A
authors.initials: A
authors.lastname: Kalyani
authors.forename: A K
authors.initials: AK
authors.lastname: Groves
authors.forename: M T
authors.initials: MT
authors.lastname: Lucero
authors.forename: M S
authors.initials: MS
authors.lastname: Rao
mesh_terms: D000818:Animals; D002118:Calcium / Q000378:metabolism; D002454:Cell Differentiation; D002478:Cells, Cultured; D003470:Culture Media; D004847:Epithelial Cells / Q000166:cytology / Q000502:physiology; D066246:ErbB Receptors / Q000032:analysis / Q000235:genetics; D005732:Gangliosides / Q000032:analysis; D007150:Immunohistochemistry; D051379:Mice; D008810:Mice, Inbred C57BL; D009419:Nerve Tissue Proteins / Q000032:analysis / Q000235:genetics; D009420:Nervous System / Q000166:cytology / Q000196:embryology*; D019006:Neural Cell Adhesion Molecules / Q000032:analysis; D009474:Neurons / Q000166:cytology*; D016133:Polymerase Chain Reaction; D051381:Rats; D013116:Spinal Cord / Q000166:cytology / Q000196:embryology*; D013234:Stem Cells / Q000166:cytology*
chemical_list: D003470:Culture Media; D005732:Gangliosides; D009419:Nerve Tissue Proteins; D019006:Neural Cell Adhesion Molecules; C062875:ganglioside A2B5; D066246:ErbB Receptors; D002118:Calcium