Talin autoinhibition is required for morphogenesis

Ellis, Stephanie J and Goult, Benjamin T and Fairchild, Michael J and Harris, Nathan J and Long, Jenny and Lobo, Paolo and Czerniecki, Stefan and Van Petegem, Filip and Schöck, Frieder and Peifer, Mark and Tanentzapf, Guy (2013) Talin autoinhibition is required for morphogenesis. Current biology, 23 (18). pp. 1825-1833. ISSN 1879-0445. (doi:https://doi.org/10.1016/j.cub.2013.07.054) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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Official URL
http://dx.doi.org/10.1016/j.cub.2013.07.054

Abstract

The establishment of a multicellular body plan requires coordinating changes in cell adhesion and the cytoskeleton to ensure proper cell shape and position within a tissue. Cell adhesion to the extracellular matrix (ECM) via integrins plays diverse, essential roles during animal embryogenesis and therefore must be precisely regulated. Talin, a FERM-domain containing protein, forms a direct link between integrin adhesion receptors and the actin cytoskeleton and is an important regulator of integrin function. Similar to other FERM proteins, talin makes an intramolecular interaction that could autoinhibit its activity. However, the functional consequence of such an interaction has not been previously explored in vivo. Here, we demonstrate that targeted disruption of talin autoinhibition gives rise to morphogenetic defects during fly development and specifically that dorsal closure (DC), a process that resembles wound healing, is delayed. Impairment of autoinhibition leads to reduced talin turnover at and increased talin and integrin recruitment to sites of integrin-ECM attachment. Finally, we present evidence that talin autoinhibition is regulated by Rap1-dependent signaling. Based on our data, we propose that talin autoinhibition provides a switch for modulating adhesion turnover and adhesion stability that is essential for morphogenesis.

Item Type: Article
Subjects: Q Science > QH Natural history > QH301 Biology
Divisions: Faculties > Sciences > School of Biosciences
Depositing User: Ben Goult
Date Deposited: 07 Aug 2014 20:23 UTC
Last Modified: 25 Mar 2015 16:18 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/42108 (The current URI for this page, for reference purposes)
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