Reconstitution of the Cytoplasmic Regulation of the Wnt Signaling Pathway Using Xenopus Egg Extracts.

Hyde AS, Hang BI, Lee E
Methods Mol Biol. 2016 1481: 101-9

PMID: 27590156 · PMCID: PMC5567996 · DOI:10.1007/978-1-4939-6393-5_11

The regulation of β-catenin turnover is the central mechanism governing activation of the Wnt signaling pathway. All components of the pathway are present in the early embryo of Xenopus laevis, and Xenopus egg extracts have been used to recapitulate complex biological reactions such as microtubule dynamics, DNA replication, chromatin assembly, and phases of the cell cycle. Herein, we describe a biochemical method for analyzing β-catenin degradation using radiolabeled and luciferase-fusion proteins in Xenopus egg extracts. We show that in such a biochemical system, cytoplasmic β-catenin degradation is regulated by soluble components of the Wnt pathway as well as small molecules.

MeSH Terms (13)

Animals beta Catenin Cell Cycle Chromatin Assembly and Disassembly DNA Replication Embryonic Development Microtubules Molecular Biology Oocytes Proteolysis Wnt Proteins Wnt Signaling Pathway Xenopus laevis

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