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A morphogen gradient of Wnt/β-catenin signalling regulates anteroposterior neural patterning in Xenopus

Kiecker, Clemens, Niehrs, Christof·2001·Development

Abstract

Anteroposterior (AP) patterning of the vertebrate neural plate is initiated during gastrulation and is regulated by Spemann’s organizer and its derivatives. The prevailing model for AP patterning predicts a caudally increasing gradient of a ‘transformer’ which posteriorizes anteriorly specified neural cells. However, the molecular identity of the transforming gradient has remained elusive. We show that in Xenopus embryos (1) dose-dependent Wnt signalling is both necessary and sufficient for AP patterning of the neuraxis, (2) Wnt/β-catenin signalling occurs in a direct and long-range fashion within the ectoderm, and (3) that there is an endogenous AP gradient of Wnt/β-catenin signalling in the presumptive neural plate of the Xenopus gastrula. Our results indicate that an activity gradient of Wnt/β-catenin signalling acts as transforming morphogen to pattern the Xenopus central nervous system.

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Metadata

Authors
Kiecker, C., & Niehrs, C.
Venue
Development
Published
2001-11-01
Volume
128
Issue
21
Pages
4189-4201
ISSN
  • 0950-1991 (ISSN-L)
  • 1477-9129
OpenAlex
W2102735467
Cited by
512
References
2
FWCI
6.51
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: A morphogen gradient of Wnt/β-catenin signalling regulates anteroposterior neural patterning in Xenopus. https://app.cochat.ai/papers/10.1242/dev.128.21.4189
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Kiecker, C., & Niehrs, C. (2001). A morphogen gradient of Wnt/β-catenin signalling regulates anteroposterior neural patterning in Xenopus. Development. https://doi.org/10.1242/dev.128.21.4189

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