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Science. 2006 Dec 8;314(5805):1595-8. Epub 2006 Nov 9.

A complex oscillating network of signaling genes underlies the mouse segmentation clock.

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  • 1Howard Hughes Medical Institute, Kansas City, MO 64110, USA.

Abstract

The segmental pattern of the spine is established early in development, when the vertebral precursors, the somites, are rhythmically produced from the presomitic mesoderm. Microarray studies of the mouse presomitic mesoderm transcriptome reveal that the oscillator associated with this process, the segmentation clock, drives the periodic expression of a large network of cyclic genes involved in cell signaling. Mutually exclusive activation of the notch-fibroblast growth factor and Wnt pathways during each cycle suggests that coordinated regulation of these three pathways underlies the clock oscillator.

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PMID:
17095659
[PubMed - indexed for MEDLINE]
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