BMP and retinoic acid regulate anterior–posterior patterning of the non-axial mesoderm across the dorsal–ventral axis

Richard W. Naylor, Lauren Brilli Skvarca, Christine Thisse, Bernard Thisse, Neil A. Hukriede and Alan J. Davidson ()
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Richard W. Naylor: University of Auckland
Lauren Brilli Skvarca: University of Pittsburgh
Christine Thisse: University of Virginia
Bernard Thisse: University of Virginia
Neil A. Hukriede: University of Pittsburgh
Alan J. Davidson: University of Auckland

Nature Communications, 2016, vol. 7, issue 1, 1-14

Abstract: Abstract Despite the fundamental importance of patterning along the dorsal–ventral (DV) and anterior–posterior (AP) axes during embryogenesis, uncertainty exists in the orientation of these axes for the mesoderm. Here we examine the origin and formation of the zebrafish kidney, a ventrolateral mesoderm derivative, and show that AP patterning of the non-axial mesoderm occurs across the classic gastrula stage DV axis while DV patterning aligns along the animal–vegetal pole. We find that BMP signalling acts early to establish broad anterior and posterior territories in the non-axial mesoderm while retinoic acid (RA) functions later, but also across the classic DV axis. Our data support a model in which RA on the dorsal side of the embryo induces anterior kidney fates while posterior kidney progenitors are protected ventrally by the RA-catabolizing enzyme Cyp26a1. This work clarifies our understanding of vertebrate axis orientation and establishes a new paradigm for how the kidney and other mesodermal derivatives arise during embryogenesis.

Date: 2016
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DOI: 10.1038/ncomms12197

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