The Head's Tale: Anterior-Posterior Axis Formation in the Mouse Embryo

Current Topics in Developmental Biology
Matthew J Stower, Shankar Srinivas

Abstract

The establishment of the anterior-posterior (A-P) axis is a fundamental event during early development and marks the start of the process by which the basic body plan is laid down. This axial information determines where gastrulation, that generates and positions cells of the three-germ layers, occurs. A-P patterning requires coordinated interactions between multiple tissues, tight spatiotemporal control of signaling pathways, and the coordination of tissue growth with morphogenetic movements. In the mouse, a specialized population of cells, the anterior visceral endoderm (AVE) undergoes a migration event critical for correct A-P pattern. In this review, we summarize our understanding of the generation of anterior pattern, focusing on the role of the AVE. We will also outline some of the many questions that remain regarding the mechanism by which the first axial asymmetry is established, how the AVE is induced, and how it moves within the visceral endoderm epithelium.

Citations

Aug 25, 2020·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Néstor Saiz, Anna-Katerina Hadjantonakis
Dec 31, 2020·Developmental Cell·Gianluca AmadeiMagdalena Zernicka-Goetz
May 23, 2020·Current Opinion in Biomedical Engineering·Anna-Katerina HadjantonakisMijo Simunovic

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