title: Neural precursors derived from human embryonic stem cells.
abstract: Human embryonic stem (hES) cells provide a promising supply of specific cell types for transplantation therapy. We presented here the method to induce differentiation of purified neural precursors from hES cells. hES cells (Line PKU-1 and Line PKU-2) were cultured in suspension in bacteriological Petri dishes, which differentiated into cystic embryoid bodies (EBs). The EBs were then cultured in N2 medium containing bFGF in poly-L-lysine-coated tissue culture dishes for two weeks. The central, small cells with 2-3 short processes of the spreading outgrowth were isolated mechanically and replated. The resulting neurospheres were cultured in suspension for 10 days, then dissociated into single cell suspension with a Pasteur pipette and plated. Cells grew vigorously in an attached way and were passed every 4-5 days. Almost all the cells were proved nestin positive by immunostaining. Following withdrawal of bFGF, they differentiated into neurons expressing beta-tubulin isotype(III), GABA, serotonin and synaptophysin. Through induction of PDGF-AA, they differentiated into astrocytes expressing GFAP and oligodendrocytes expressing O4. The results showed that hES cells can differentiate into typical neural precursors expressing the specific marker nestin and capable of generating all three cell types of the central nervous system (CNS) in vitro.
authors.affiliation: Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100083, China.
authors.forename: Hongmei
authors.initials: H
authors.lastname: Peng
authors.forename: Gui'an
authors.initials: G
authors.lastname: Chen
mesh_terms: D000943:Antigens, Differentiation / Q000032:analysis; D001253:Astrocytes / Q000737:chemistry / Q000166:cytology / Q000187:drug effects; D002454:Cell Differentiation / Q000187:drug effects; D019070:Cell Lineage / Q000187:drug effects; D004622:Embryo, Mammalian / Q000166:cytology* / Q000187:drug effects; D016222:Fibroblast Growth Factor 2 / Q000494:pharmacology; D005904:Glial Fibrillary Acidic Protein / Q000032:analysis; D006801:Humans; D007150:Immunohistochemistry; D009474:Neurons / Q000737:chemistry / Q000166:cytology* / Q000187:drug effects; D009836:Oligodendroglia / Q000737:chemistry / Q000166:cytology / Q000187:drug effects; D010982:Platelet-Derived Growth Factor / Q000494:pharmacology; D020033:Protein Isoforms / Q000032:analysis; D012701:Serotonin / Q000032:analysis; D013234:Stem Cells / Q000166:cytology* / Q000187:drug effects; D016708:Synaptophysin / Q000032:analysis; D014404:Tubulin / Q000032:analysis; D005680:gamma-Aminobutyric Acid / Q000032:analysis
chemical_list: D000943:Antigens, Differentiation; D005904:Glial Fibrillary Acidic Protein; D010982:Platelet-Derived Growth Factor; D020033:Protein Isoforms; D016708:Synaptophysin; D014404:Tubulin; C075278:platelet-derived growth factor A; D016222:Fibroblast Growth Factor 2; D012701:Serotonin; D005680:gamma-Aminobutyric Acid