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Sharp boundaries of Dpp signalling trigger local cell death required for Drosophila leg morphogenesis

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dc.contributor Ministerio de Economía y Competitividad (España)
dc.contributor Comunidad de Madrid
dc.contributor Fundación Ramón Areces
dc.contributor Ministerio de Educación y Ciencia (España)
dc.creator Manjón, Cristina
dc.creator Sánchez-Herrero, Ernesto
dc.creator Suzanne, Magali
dc.date 2008-05-30T12:41:27Z
dc.date 2008-05-30T12:41:27Z
dc.date 2006-12-03
dc.date.accessioned 2017-01-31T01:31:25Z
dc.date.available 2017-01-31T01:31:25Z
dc.identifier Nature Cell Biology 9, 57 - 63 (2006)
dc.identifier 1465-7392 (Print)
dc.identifier 1476-4679 (Online)
dc.identifier http://hdl.handle.net/10261/4699
dc.identifier.uri http://dspace.mediu.edu.my:8181/xmlui/handle/10261/4699
dc.description Article available at http://dx.doi.org/10.1038/ncb1518
dc.description Morphogens are secreted signalling molecules that govern many developmental processes1. In the Drosophila wing disc, the transforming growth factor (TGF) homologue Decapentaplegic (Dpp) forms a smooth gradient and specifies cell fate by conferring a defined value of morphogen activity. Thus, neighbouring cells have similar amounts of Dpp protein, and if a sharp discontinuity in Dpp activity is generated between these cells, Jun kinase (JNK)-dependent apoptosis is triggered to restore graded positional information2, 3. To date, it has been assumed that this apoptotic process is only activated when normal signalling is distorted. However, we now show that a similar process occurs during normal development: rupture in Dpp activity occurs during normal segmentation of the distal legs of Drosophila. This sharp boundary of Dpp signalling, independently of the absolute level of Dpp activity, induces a JNK—reaper-dependent apoptosis required for the morphogenesis of a particular structure of the leg, the joint. Our results show that Dpp could induce a developmental programme not only in a concentration dependent manner, but also by the creation of a sharp boundary of Dpp activity. Furthermore, the same process could be used either to restore a normal pattern in response to artificial disturbance or to direct a morphogenetic process.
dc.description This work has been supported by grants from the Dirección General de Investigación Científica y Técnica (BMC 2002-00300), the Comunidad Autónoma de Madrid (08.1/0031/2001.1 and GR/SAL/0147/2004) and an Institutional Grant from the Fundación Ramón Areces. C.M. is a recipient of a Formación del Personal Universitario (F.P.U.) fellowship from the Ministerio de Educación y Ciencia.
dc.description Peer reviewed
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dc.language eng
dc.publisher Nature Publishing Group
dc.rights openAccess
dc.subject Drosophila
dc.subject Decapentaplegic
dc.title Sharp boundaries of Dpp signalling trigger local cell death required for Drosophila leg morphogenesis
dc.type Artículo


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