title: Isolation of neuronal precursors from differentiating P19 embryonal carcinoma cells by neuronal T alpha 1-promoter-driven GFP.
abstract: The induction of pluripotent P19 embryonal carcinoma (EC) cells with retinoic acid results in their differentiation into cells that resemble neurons, glia, and fibroblasts. To isolate and enrich the developing neurons from heterogeneously differentiating P19 EC cells, we used a recently introduced protocol combining the expression of green fluorescent protein (GFP) driven by a tissue-specific promoter and fluorescence-activated cell sorting. Cells were transfected with the gene for GFP, which is under the control of the neuronal T alpha 1 tubulin promoter. After four days of retinoic acid treatment, GFP was specifically detected in cells undergoing neuronal differentiation. Sorting of fluorescent differentiating P19 EC transfectants yielded populations highly enriched in neuronal precursors and neurons. Immunoreactivity for nestin and neurofilament was observed in 80 and 25% of the sorted cell population, respectively. These results demonstrate that differentiated neuronal precursor cells can be efficiently isolated from differentiating pluripotent embryonic cells in vitro, suggesting that this method can reproducibly provide homogeneous materials for further studies on neurogenesis.
authors.affiliation: Division of Life Sciences, Graduate School of Biotechnology, Korea University, Seoul 136-701, South Korea.
authors.forename: J
authors.initials: J
authors.lastname: Kim
authors.forename: S C
authors.initials: SC
authors.lastname: Choi
authors.forename: T H
authors.initials: TH
authors.lastname: Kim
authors.forename: K D
authors.initials: KD
authors.lastname: Kim
authors.forename: S Y
authors.initials: SY
authors.lastname: Cho
authors.forename: S S
authors.initials: SS
authors.lastname: Park
authors.forename: S H
authors.initials: SH
authors.lastname: Lee
mesh_terms: D000970:Antineoplastic Agents / Q000494:pharmacology; D018929:Cell Culture Techniques; D002454:Cell Differentiation / Q000187:drug effects / Q000502:physiology*; D002999:Clone Cells / Q000166:cytology / Q000187:drug effects / Q000378:metabolism; D054278:Embryonal Carcinoma Stem Cells; D004627:Embryonic Induction / Q000187:drug effects / Q000502:physiology; D005434:Flow Cytometry; D018507:Gene Expression Regulation, Developmental / Q000187:drug effects / Q000502:physiology; D049452:Green Fluorescent Proteins; D006801:Humans; D007150:Immunohistochemistry; D008164:Luminescent Proteins / Q000235:genetics*; D014411:Neoplastic Stem Cells / Q000166:cytology* / Q000187:drug effects / Q000378:metabolism; D009474:Neurons / Q000166:cytology* / Q000187:drug effects / Q000378:metabolism; D011401:Promoter Regions, Genetic / Q000502:physiology*; D013234:Stem Cells / Q000166:cytology* / Q000187:drug effects / Q000378:metabolism; D019076:Transgenes / Q000187:drug effects / Q000502:physiology; D014212:Tretinoin / Q000494:pharmacology; D014404:Tubulin / Q000235:genetics*
chemical_list: D000970:Antineoplastic Agents; D008164:Luminescent Proteins; D014404:Tubulin; D049452:Green Fluorescent Proteins; D014212:Tretinoin