Chiral forces organize left-right patterning in C. elegans by uncoupling midline and anteroposterior axis Journal Article
| Authors: | Pohl, C.; Bao, Z. |
| Article Title: | Chiral forces organize left-right patterning in C. elegans by uncoupling midline and anteroposterior axis |
| Abstract: | Left-right (LR) patterning is an intriguing but poorly understood process of bilaterian embryogenesis. We report a mechanism for LR patterning in C. elegans in which the embryo uncouples its midline from the anteroposterior (AP) axis. Specifically, the eight-cell embryo establishes a midline that is tilted rightward from the AP axis and positions more cells on the left, allowing subsequent differential LR fate inductions. To establish the tilted midline, cells exhibit LR asymmetric protrusions and a handed collective movement. This process, termed chiral morphogenesis, involves differential regulation of cortical contractility between a pair of sister cells that are bilateral counterparts fate-wise and is activated by noncanonical Wnt signaling. Chiral morphogenesis is timed by the cytokinetic furrow of a neighbor of the sister pair, providing a developmental clock and an unexpected signaling interaction between the contractile ring and the adjacent cells. © 2010 Elsevier Inc. |
| Keywords: | nonhuman; animals; embryo; embryo development; embryo pattern formation; morphogenesis; embryo, nonmammalian; gene expression regulation, developmental; bilateria; caenorhabditis elegans; body patterning; anterior posterior axis; caenorhabditis elegans proteins |
| Journal Title: | Developmental Cell |
| Volume: | 19 |
| Issue: | 3 |
| ISSN: | 1534-5807 |
| Publisher: | Cell Press |
| Date Published: | 2010-09-14 |
| Start Page: | 402 |
| End Page: | 412 |
| Language: | English |
| DOI: | 10.1016/j.devcel.2010.08.014 |
| PUBMED: | 20833362 |
| PROVIDER: | scopus |
| PMCID: | PMC2952354 |
| DOI/URL: | |
| Notes: | --- - "Cited By (since 1996): 1" - "Export Date: 20 April 2011" - "CODEN: DCEEB" - "Source: Scopus" |
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