Please use this identifier to cite or link to this item: https://doi.org/10.1242/dev.064733
Title: Neuroblast migration along the anteroposterior axis of C. elegans is controlled by opposing gradients of Wnts and a secreted Frizzled-related protein
Authors: Harterink, M.
Kim, D.H.
Middelkoop, T.C.
Doan, T.D. 
van Oudenaarden, A.
Korswagen, H.C.
Keywords: C. elegans
Neuroblast migration
Secreted Frizzled-related protein
Wnt
Issue Date: 15-Jul-2011
Citation: Harterink, M., Kim, D.H., Middelkoop, T.C., Doan, T.D., van Oudenaarden, A., Korswagen, H.C. (2011-07-15). Neuroblast migration along the anteroposterior axis of C. elegans is controlled by opposing gradients of Wnts and a secreted Frizzled-related protein. Development 138 (14) : 2915-2924. ScholarBank@NUS Repository. https://doi.org/10.1242/dev.064733
Abstract: The migration of neuroblasts along the anteroposterior body axis of C. elegans is controlled by multiple Wnts that act partially redundantly to guide cells to their precisely defined final destinations. How positional information is specified by this system is, however, still largely unknown. Here, we used a novel fluorescent in situ hybridization methods to generate a quantitative spatiotemporal expression map of the C. elegans Wnt genes. We found that the five Wnt genes are expressed in a series of partially overlapping domains along the anteroposterior axis, with a predominant expression in the posterior half of the body. Furthermore, we show that a secreted Frizzled-related protein is expressed at the anterior end of the body axis, where it inhibits Wnt signaling to control neuroblast migration. Our findings reveal that a system of regionalized Wnt gene expression and anterior Wnt inhibition guides the highly stereotypic migration of neuroblasts in C. elegans. Opposing expression of Wnts and Wnt inhibitors has been observed in basal metazoans and in the vertebrate neurectoderm. Our results in C. elegans support the notion that a system of posterior Wnt signaling and anterior Wnt inhibition is an evolutionarily conserved principle of primary body axis specification. © 2011.
Source Title: Development
URI: http://scholarbank.nus.edu.sg/handle/10635/128533
ISSN: 09501991
DOI: 10.1242/dev.064733
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