title: Production of chick embryo extract for the cultivation of murine neural crest stem cells.
abstract: The neural crest arises from the neuro-ectoderm during embryogenesis and persists only temporarily. Early experiments already proofed pluripotent progenitor cells to be an integral part of the neural crest(1). Phenotypically, neural crest stem cells (NCSC) are defined by simultaneously expressing p75 (low-affine nerve growth factor receptor, LNGFR) and SOX10 during their migration from the neural crest(2,3,4,5). These progenitor cells can differentiate into smooth muscle cells, chromaffin cells, neurons and glial cells, as well as melanocytes, cartilage and bone(6,7,8,9). To cultivate NCSC in vitro, a special neural crest stem cell medium (NCSCM) is required(10). The most complex part of the NCSCM is the preparation of chick embryo extract (CEE) representing an essential source of growth factors for the NCSC as well as for other types of neural explants. Other NCSCM ingredients beside CEE are commercially available. Producing CCE using laboratory standard equipment it is of high importance to know about the challenging details as the isolation, maceration, centrifugation, and filtration processes. In this protocol we describe accurate techniques to produce a maximized amount of pure and high quality CEE.
authors.affiliation: Department of Pediatric Oncology, University Children's Hospital Essen. kristian.pajtler@uk-essen.de
authors.forename: Kristian
authors.initials: K
authors.lastname: Pajtler
authors.forename: Anna
authors.initials: A
authors.lastname: Bohrer
authors.forename: Jochen
authors.initials: J
authors.lastname: Maurer
authors.forename: Hubert
authors.initials: H
authors.lastname: Schorle
authors.forename: Alexander
authors.initials: A
authors.lastname: Schramm
authors.forename: Angelika
authors.initials: A
authors.lastname: Eggert
authors.forename: Johannes Hubertus
authors.initials: JH
authors.lastname: Schulte
mesh_terms: D000818:Animals; D018929:Cell Culture Techniques / Q000379:methods*; D002642:Chick Embryo / Q000737:chemistry*; D053595:Embryonic Stem Cells / Q000166:cytology*; D051379:Mice; D009432:Neural Crest / Q000166:cytology*; D014020:Tissue Extracts / Q000302:isolation & purification* / Q000494:pharmacology
chemical_list: D014020:Tissue Extracts