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Westphal M, Panza P, Kastenhuber E, Wehrle J, Driever W. Wnt/β-catenin signaling promotes neurogenesis in the diencephalospinal dopaminergic system of embryonic zebrafish. Sci Rep 2022; 12:1030. [PMID: 35046434 PMCID: PMC8770493 DOI: 10.1038/s41598-022-04833-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Accepted: 12/28/2021] [Indexed: 12/21/2022] Open
Abstract
Wnt/β-catenin signaling contributes to patterning, proliferation, and differentiation throughout vertebrate neural development. Wnt/β-catenin signaling is important for mammalian midbrain dopaminergic neurogenesis, while little is known about its role in ventral forebrain dopaminergic development. Here, we focus on the A11-like, Otp-dependent diencephalospinal dopaminergic system in zebrafish. We show that Wnt ligands, receptors and extracellular antagonist genes are expressed in the vicinity of developing Otp-dependent dopaminergic neurons. Using transgenic Wnt/β-catenin-reporters, we found that Wnt/β-catenin signaling activity is absent from these dopaminergic neurons, but detected Wnt/β-catenin activity in cells adjacent to the caudal DC5/6 clusters of Otp-dependent dopaminergic neurons. Pharmacological manipulations of Wnt/β-catenin signaling activity, as well as heat-shock driven overexpression of Wnt agonists and antagonists, interfere with the development of DC5/6 dopaminergic neurons, such that Wnt/β-catenin activity positively correlates with their number. Wnt/β-catenin activity promoted dopaminergic development specifically at stages when DC5/6 dopaminergic progenitors are in a proliferative state. Our data suggest that Wnt/β-catenin signaling acts in a spatially and temporally restricted manner on proliferative dopaminergic progenitors in the hypothalamus to positively regulate the size of the dopaminergic neuron groups DC5 and DC6.
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Affiliation(s)
- Markus Westphal
- Developmental Biology, Faculty of Biology, Institute Biology 1, Albert Ludwigs University Freiburg, Hauptstrasse 1, 79104, Freiburg, Germany.,CIBSS and BIOSS-Centres for Biological Signalling Studies, University of Freiburg, Schänzlestrasse 18, 79104, Freiburg, Germany
| | - Paolo Panza
- Developmental Biology, Faculty of Biology, Institute Biology 1, Albert Ludwigs University Freiburg, Hauptstrasse 1, 79104, Freiburg, Germany.,Department of Developmental Genetics, Max-Planck-Institute for Heart and Lung Research, Ludwigstraße 43, 61231, Bad Nauheim, Germany
| | - Edda Kastenhuber
- Developmental Biology, Faculty of Biology, Institute Biology 1, Albert Ludwigs University Freiburg, Hauptstrasse 1, 79104, Freiburg, Germany.,Institute of Anatomy, University of Zurich, Winterthurerstrasse 190, 8057, Zurich, Switzerland
| | - Johanna Wehrle
- Developmental Biology, Faculty of Biology, Institute Biology 1, Albert Ludwigs University Freiburg, Hauptstrasse 1, 79104, Freiburg, Germany.,CIBSS and BIOSS-Centres for Biological Signalling Studies, University of Freiburg, Schänzlestrasse 18, 79104, Freiburg, Germany
| | - Wolfgang Driever
- Developmental Biology, Faculty of Biology, Institute Biology 1, Albert Ludwigs University Freiburg, Hauptstrasse 1, 79104, Freiburg, Germany. .,CIBSS and BIOSS-Centres for Biological Signalling Studies, University of Freiburg, Schänzlestrasse 18, 79104, Freiburg, Germany.
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Cell Biology and Signaling. Neuro Oncol 2010. [DOI: 10.1093/neuonc/noq116.s2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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