scholarly journals Concerted involvement of Cdx/Hox genes and Wnt signaling in morphogenesis of the caudal neural tube and cloacal derivatives from the posterior growth zone

Development ◽  
2011 ◽  
Vol 138 (17) ◽  
pp. 3859-3859 ◽  
Author(s):  
C. van de Ven ◽  
M. Bialecka ◽  
R. Neijts ◽  
T. Young ◽  
J. E. Rowland ◽  
...  
Keyword(s):  
Wnt Signaling ◽  
Neural Tube ◽  
Hox Genes ◽  
Growth Zone ◽  
Posterior Growth Zone

scholarly journals Concerted involvement of Cdx / Hox genes and Wnt signaling in morphogenesis of the caudal neural tube and cloacal derivatives from the posterior growth zone

Development ◽  
2011 ◽  
Vol 138 (16) ◽  
pp. 3451-3462 ◽  
Author(s):  
Cesca van de Ven ◽  
Monika Bialecka ◽  
Roel Neijts ◽  
Teddy Young ◽  
Jennifer E. Rowland ◽  
...  
Keyword(s):  
Wnt Signaling ◽  
Neural Tube ◽  
Hox Genes ◽  
Growth Zone ◽  
Posterior Growth Zone

scholarly journals Genetic interaction of Pax3 mutation and canonical Wnt signaling modulates neural tube defects and neural crest abnormalities

genesis ◽  
2021 ◽  
Author(s):  
Alexandra J. Palmer ◽  
Dawn Savery ◽  
Valentina Massa ◽  
Andrew J. Copp ◽  
Nicholas D. E. Greene
Keyword(s):  
Wnt Signaling ◽  
Neural Crest ◽  
Neural Tube ◽  
Neural Tube Defects ◽  
Genetic Interaction ◽  
Canonical Wnt Signaling ◽  
Canonical Wnt

scholarly journals Draxin acts as a molecular rheostat of canonical Wnt signaling to control cranial neural crest EMT

2018 ◽  
Vol 217 (10) ◽  
pp. 3683-3697 ◽  
Author(s):  
Erica J. Hutchins ◽  
Marianne E. Bronner
Keyword(s):  
Wnt Signaling ◽  
Neural Crest ◽  
Neural Tube ◽  
Epithelial To Mesenchymal Transition ◽  
Cranial Neural Crest ◽  
Canonical Wnt Signaling ◽  
Mesenchymal Transition ◽  
Molecular Rheostat ◽  
Timing Of Initiation ◽  
Canonical Wnt

Neural crest cells undergo a spatiotemporally regulated epithelial-to-mesenchymal transition (EMT) that proceeds head to tailward to exit from the neural tube. In this study, we show that the secreted molecule Draxin is expressed in a transient rostrocaudal wave that mirrors this emigration pattern, initiating after neural crest specification and being down-regulated just before delamination. Functional experiments reveal that Draxin regulates the timing of cranial neural crest EMT by transiently inhibiting canonical Wnt signaling. Ectopic maintenance of Draxin in the cranial neural tube blocks full EMT; while cells delaminate, they fail to become mesenchymal and migratory. Loss of Draxin results in premature delamination but also in failure to mesenchymalize. These results suggest that a pulse of intermediate Wnt signaling triggers EMT and is necessary for its completion. Taken together, these data show that transient secreted Draxin mediates proper levels of canonical Wnt signaling required to regulate the precise timing of initiation and completion of cranial neural crest EMT.

A Wnt signaling pathway controls hox gene expression and neuroblast migration in C. elegans

Development ◽  
1999 ◽  
Vol 126 (1) ◽  
pp. 37-49 ◽  
Author(s):  
J.N. Maloof ◽  
J. Whangbo ◽  
J.M. Harris ◽  
G.D. Jongeward ◽  
C. Kenyon
Keyword(s):  
Gene Expression ◽  
Wnt Signaling ◽  
Wnt Pathway ◽  
Hox Genes ◽  
Wnt Signaling Pathway ◽  
Beta Catenin ◽  
Hox Gene ◽  
C Elegans ◽  
Neuroblast Migration ◽  
Pathway Gene

The specification of body pattern along the anteroposterior (A/P) body axis is achieved largely by the actions of conserved clusters of Hox genes. Limiting expression of these genes to localized regional domains and controlling the precise patterns of expression within those domains is critically important for normal patterning. Here we report that egl-20, a C. elegans gene required to activate expression of the Hox gene mab-5 in the migratory neuroblast QL, encodes a member of the Wnt family of secreted glycoproteins. We have found that a second Wnt pathway gene, bar-1, which encodes a beta-catenin/Armadillo-like protein, is also required for activation of mab-5 expression in QL. In addition, we describe the gene pry-1, which is required to limit expression of the Hox genes lin-39, mab-5 and egl-5 to their correct local domains. We find that egl-20, pry-1 and bar-1 all function in a linear genetic pathway with conserved Wnt signaling components, suggesting that a conserved Wnt pathway activates expression of mab-5 in the migratory neuroblast QL. Moreover, we find that members of this Wnt signaling system play a major role in both the general and fine-scale control of Hox gene expression in other cell types along the A/P axis.

Expression pattern ofBrachyuryin the molluscPatella vulgatasuggests a conserved role in the establishment of the AP axis in Bilateria

Development ◽  
2002 ◽  
Vol 129 (6) ◽  
pp. 1411-1421 ◽  
Author(s):  
Nicolas Lartillot ◽  
Olivier Lespinet ◽  
Michel Vervoort ◽  
André Adoutte
Keyword(s):  
Expression Pattern ◽  
Bilateral Symmetry ◽  
Growth Zone ◽  
Posterior Pole ◽  
Axis Formation ◽  
Posterior Edge ◽  
Cell Stage ◽  
Posterior Growth Zone ◽  
Erk Activity ◽  
Anterior Posterior

We report the characterisation of a Brachyury ortholog (PvuBra) in the marine gastropod Patella vulgata. In this mollusc, the embryo displays an equal cleavage pattern until the 32-cell stage. There, an inductive event takes place that sets up the bilateral symmetry, by specifying one of the four initially equipotent vegetal macromeres as the posterior pole of all subsequent morphogenesis. This macromere, usually designated as 3D, will subsequently act as an organiser. We show that 3D expresses PvuBra as soon as its fate is determined. As reported for another mollusc (J. D. Lambert and L. M. Nagy (2001) Development128, 45-56), we found that 3D determination and activity also involve the activation of the MAP kinase ERK, and we further show that PvuBra expression in 3D requires ERK activity. PvuBra expression then rapidly spreads to neighbouring cells that cleave in a bilateral fashion and whose progeny will constitute the posterior edge of the blastopore during gastrulation, suggesting a role for PvuBra in regulating cell movements and cleavage morphology in Patella. Until the completion of gastrulation, PvuBra expression is maintained at the posterior pole, and along the developing anterior-posterior axis. Comparing this expression pattern with what is known in other Bilateria, we advocate that Brachyury might have a conserved role in the regulation of anterior-posterior patterning among Bilateria, through the maintenance of a posterior growth zone, suggesting that a teloblastic mode of axis formation might be ancestral to the Bilateria.

Genetic studies ofANKRD6as a molecular switch between Wnt signaling pathways in human neural tube defects

2014 ◽  
Vol 103 (1) ◽  
pp. 20-26 ◽  
Author(s):  
Redouane Allache ◽  
Mingqin Wang ◽  
Patrizia De Marco ◽  
Elisa Merello ◽  
Valeria Capra ◽  
...  
Keyword(s):  
Wnt Signaling ◽  
Signaling Pathways ◽  
Neural Tube ◽  
Neural Tube Defects ◽  
Molecular Switch ◽  
Genetic Studies

scholarly journals Wnt Signaling Inhibitors Regulate the Transcriptional Response to Morphogenetic Shh-Gli Signaling in the Neural Tube

2006 ◽  
Vol 11 (3) ◽  
pp. 325-337 ◽  
Author(s):  
Qiubo Lei ◽  
Yongsu Jeong ◽  
Kamana Misra ◽  
Shike Li ◽  
Alice K. Zelman ◽  
...  
Keyword(s):  
Wnt Signaling ◽  
Neural Tube ◽  
Transcriptional Response ◽  
Signaling Inhibitors
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