Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-23852
Pellegrino, M W; Gasser, R B; Sprenger, F; Stetak, A; Hajnal, A (2009). The conserved zinc finger protein VAB-23 is an essential regulator of epidermal morphogenesis in Caenorhabditis elegans. Developmental Biology, 336(1):84-93.
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Caenorhabditis elegans is an excellent model to observe cell movements and shape changes during the morphogenesis of the egg-shaped embryo into an elongated tube-like larva. Although much is known about the structural determinants involved in epidermal morphogenesis, relatively little is known about the transcriptional and post-transcriptional regulatory networks involved. Here, we describe the identification and functional characterization of the novel nuclear protein VAB-23, which belongs to a conserved protein family found in all metazoans. C. elegans VAB-23 is essential for ventral closure and elongation of the embryo. Time-lapse analysis indicates that VAB-23 is required for the formation of proper cell contacts between contralateral pairs of ventral epidermal cells. Tissue-specific rescue experiments reveal a function of VAB-23 in ventral neuroblasts that control the enclosure of the embryo by the overlaying epidermal cells. Finally, we provide evidence suggesting a role of VAB-23 in post-transcriptional gene regulation. We thus propose that VAB-23 regulates the expression of multiple secreted guidance cues in ventral neuroblasts that direct the migration of the overlaying epidermal cells. Members of the VAB-23 family may perform similar functions during morphogenesis in other metazoans.
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|Item Type:||Journal Article, refereed, original work|
|Communities & Collections:||07 Faculty of Science > Institute of Molecular Life Sciences|
|DDC:||570 Life sciences; biology|
|Uncontrolled Keywords:||Morphogenesis; C. elegans; Epidermis; Embryo|
|Date:||30 September 2009|
|Deposited On:||20 Nov 2009 09:03|
|Last Modified:||30 Nov 2013 01:40|
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