Differentiation of mouse embryonic stem cells into neurons using conditioned medium of dorsal root ganglia.
Mouse embryonic stem (ES) cells, which are continuously growing cell lines, have a pluripotent ability to differentiate into various cell lineages in vitro including neurons. We investigated the effects of chick dorsal root ganglion (DRG) conditioned medium (CM) and nerve growth factor (NGF) on the directed differentiation of ES cells into neurons. Because DRGs from 8-day-old chick embryos are often used in bioassays of neurotrophic factors, DRGs may release soluble factors that can induce ES cell differentiation into neurons in a culture broth. When cultivated in a Dulbecco's modified Eagle's medium (DMEM)/F-12K medium containing DRG-CM or NGF, the ES cell colonies clearly showed neurite outgrowths. Of particular significance, the immunofluorescence analysis of ES cell colonies using an anti-betaIII-tubulin antibody indicated that the addition of DRG-CM effectively promoted the differentiation of ES cells into neurons. We confirmed the effect of DRG-CM addition on ES cell differentiation into neurons via neuronal stem cells by the immunofluorescence analysis of ES cell colonies. Thus, DRG-CM appeared to effectively promote ES cell differentiation into neurons.
Kitazawa
Ayako
A
Graduate School of Life Sciences, Toyo University, 1-1-1 Izumino, Itakura-machi, Ora-gun, Gunma 374-0193, Japan.
Shimizu
Norio
N
D000818:Animals; D018929:Cell Culture Techniques / Q000379:methods; D002454:Cell Differentiation / Q000187:drug effects; D049109:Cell Proliferation / Q000187:drug effects; D002478:Cells, Cultured; D004305:Dose-Response Relationship, Drug; D005727:Ganglia, Spinal / Q000166:cytology* / Q000187:drug effects / Q000502:physiology*; D051379:Mice; D009414:Nerve Growth Factors / Q000008:administration & dosage*; D009474:Neurons / Q000166:cytology* / Q000187:drug effects / Q000502:physiology*; D013234:Stem Cells / Q000166:cytology* / Q000187:drug effects / Q000502:physiology*; D023822:Tissue Engineering / Q000379:methods
D009414:Nerve Growth Factors