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Articles by Sharon A. Louis in JoVE
JoVE Neuroscience
Hücre Testi Şekillendirme Sinir-Koloni: Sinir Progenitör Hücreler Bona Fide Sinir Kök Hücreler Ayırım Bir Testi
1Department of Neurosurgery, University of Florida, 2Department of Anatomical Sciences, Shiraz University of Medical Sciences, 3STEMCELL Technologies, Inc.
Bu video protokolü iyi niyetli nöral kök hücreler nöral prekürsör hücrelerin koloni oluşturan nöral hücre çalışması ile oluşan karışık bir nüfus nasıl ayrımcılık ve numaralandırmak göstermektedir.
Other articles by Sharon A. Louis on PubMed
Generation and Differentiation of Neurospheres from Murine Embryonic Day 14 Central Nervous System Tissue
Murine embryonic day 14 or E14 neural stem cells (NSCs), first isolated and characterized as a stem cell in culture, are a unique population of cells capable of self-renewal. In addition, they produce a large number of progeny capable of differentiating into the three primary phenotypes-neurons, astrocytes, and oligodendrocytes-found in the adult mammalian central nervous system (CNS). A defined serum-free medium supplemented with epidermal growth factor (EGF) is used to maintain the NSCs in an undifferentiated state in the form of clusters of cells, called neurospheres, for several culture passages. When EGF is removed and serum added to the medium, the intact or dissociated neurospheres differentiate into the three primary CNS phenotypes. This chapter outlines the simple NSC culture methodology and provides some of the more important details of the assay to achieve reproducible cultures.
Enumeration of Neural Stem and Progenitor Cells in the Neural Colony-forming Cell Assay
Advancement in our understanding of the biology of adult stem cells and their therapeutic potential relies heavily on meaningful functional assays that can identify and measure stem cell activity in vivo and in vitro. In the mammalian nervous system, neural stem cells (NSCs) are often studied using a culture system referred to as the neurosphere assay. We previously challenged a central tenet of this assay, that all neurospheres are derived from a NSC, and provided evidence that it overestimates NSC frequency, rendering it inappropriate for quantitation of NSC frequency in relation to NSC regulation. Here we report the development and validation of the neural colony-forming cell assay (NCFCA), which discriminates stem from progenitor cells on the basis of their proliferative potential. We anticipate that the NCFCA will provide additional clarity in discerning the regulation of NSCs, thereby facilitating further advances in the promising application of NSCs for therapeutic use.
