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  • Title: Wnt-frizzled interactions in Xenopus.
    Author: Steinbeisser H, Swain RK.
    Journal: Methods Mol Biol; 2008; 469():451-63. PubMed ID: 19109725.
    Abstract:
    The Wnt signaling cascades are regulatory modules which are involved in embryonic patterning, cell differentiation, morphogenesis, and diseases. The Wnt pathways are activated when secreted Wnt ligands interact with 7-trans-membrane receptors of the Frizzled (Fz) family. Specific readouts are determined by the ligand/receptor combinations and the cellular context. Here we describe two methods for the analysis of Wnt/Frizzled interactions in Xenopus embryos. Physical interaction of ligand and receptor are demonstrated by co-immunoprecipitation assays. The activation of Wnt targets in Xenopus animal cap tissue provides a versatile test system for activating and inhibitory components of the Wnt/beta -catenin pathway.
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