Journal
DEVELOPMENTAL DYNAMICS
Volume 236, Issue 11, Pages 3137-3143Publisher
WILEY-LISS
DOI: 10.1002/dvdy.21338
Keywords
planar cell polarity; mouse embryo; A-P axis; Flamingo; Prickle; testin; TES
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Funding
- Medical Research Council [MC_U120081320] Funding Source: Medline
- Medical Research Council [MC_U120081320] Funding Source: researchfish
- MRC [MC_U120081320] Funding Source: UKRI
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The Drosophila melanogaster proteins Flamingo and Prickle act in the planar cell polarity (PCP) pathway, which is required for acquisition of epithelial polarity in the wing, eye, and epidermis. In mammals, PCP signaling has been shown to regulate cell movements and polarity in a variety of tissues. Here, we show that the murine Flamingo orthologues Celsr1-3 and the Prickle orthologues Prickle1, Prickle2, and Testin have dynamic patterns of expression during pregastrulation and gastrulation stages. Celsr1 is expressed in the anterior visceral endoderm and nascent mesoderm, Celsr2 and Celsr3 mark the prospective neuroectoderm, Prickle1 is expressed in the primitive streak and mesoderm, Prickle2 in the node, and Testin in the anterior visceral endoderm, the extraembryonic ectoderm, primitive streak, and mesoderm. Analysis of a gene-trap mutation in Testin indicates that this gene is not required for embryogenesis; therefore, other Prickle homologues may compensate for its function during development.
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