Salt-inducible kinases regulate growth through the Hippo signalling pathway in Drosophila.
Nat Cell Biol
; 15(1): 61-71, 2013 Jan.
Article
en En
| MEDLINE
| ID: mdl-23263283
ABSTRACT
The specification of tissue size during development involves the coordinated action of many signalling pathways responding to organ-intrinsic signals, such as morphogen gradients, and systemic cues, such as nutrient status. The conserved Hippo (Hpo) pathway, which promotes both cell-cycle exit and apoptosis, is a major determinant of size control. The pathway core is a kinase cassette, comprising the kinases Hpo and Warts (Wts) and the scaffold proteins Salvador (Sav) and Mats, which inactivates the pro-growth transcriptional co-activator Yorkie (Yki). We performed a split-TEV-based genome-wide RNAi screen for modulators of Hpo signalling. We characterize the Drosophila salt-inducible kinases (Sik2 and Sik3) as negative regulators of Hpo signalling. Activated Sik kinases increase Yki target expression and promote tissue overgrowth through phosphorylation of Sav at Ser 413. As Sik kinases have been implicated in nutrient sensing, this suggests a link between the Hpo pathway and systemic growth control.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Transducción de Señal
/
Proteínas Serina-Treonina Quinasas
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Proteínas de Drosophila
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Péptidos y Proteínas de Señalización Intracelular
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Drosophila melanogaster
Límite:
Animals
Idioma:
En
Revista:
Nat Cell Biol
Año:
2013
Tipo del documento:
Article
País de afiliación:
Reino Unido
Pais de publicación:
ENGLAND
/
ESCOCIA
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GB
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GREAT BRITAIN
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INGLATERRA
/
REINO UNIDO
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SCOTLAND
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UK
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UNITED KINGDOM