Screening for mammalian neural genes via fluorescence-activated cell sorter purification of neural precursors from Sox1-gfp knock-in mice

Jerome Aubert, Marios P. Stavridis, Susan Tweedie, Michelle O'Reilly, Klemens Vierlinger, Meng Li, Peter Ghazal, Tom Pratt, John O. Mason, Douglas Roy, Austin Smith

    Research output: Contribution to journalArticle

    190 Citations (Scopus)

    Abstract

    The transcription factor Sox1 is the earliest and most specific known marker for mammalian neural progenitors. During fetal development, Sox1 is expressed by proliferating progenitor cells throughout the central nervous system and in no tissue but the lens. We generated a reporter mouse line in which egfp is inserted into the Sox1 locus. Sox1GFP animals faithfully recapitulate the expression of the endogenous gene. We have used the GFP reporter to purify neuroepithelial cells by fluorescence-activated cell sorting from embryonic day 10.5 embryos. RNAs prepared from Sox1GFP+ and Sox1GFP- embryo cells were then used to perform a pilot screen of subtracted cDNAs prepared from differentiating embryonic stem cells and arrayed on a glass chip. Fifteen unique differentially expressed genes were identified, all previously associated with fetal or adult neural tissue. Whole mount in situ hybridization against two genes of previously unknown embryonic expression, Lrrn1 and Musashi2, confirmed the selectivity of this screen for early neuroectodermal markers.
    Original languageEnglish
    Pages (from-to)11836-11841
    Number of pages6
    JournalProceedings of the National Academy of Sciences of the United States of America
    Volume100
    Issue numberSuppl. 1
    DOIs
    Publication statusPublished - 2003

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