English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/41355
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Title

Polarized Subcellular Localization of JAK/STAT Components Is Required for Efficient Signaling

AuthorsSotillos, Sol ; Díaz-Meco, M. Teresa; Moscat, Jorge ; Castelli-Gair Hombría, James
KeywordsSYSNEURO
Cell polarity
Drosophila
Ectoderm
Epithelial cells
Janus Kinases
Mesoderm
STAT transcription factors
Issue Date17-Apr-2008
PublisherElsevier
CitationCurrent Biology 18(8): 624-629 (2008)
AbstractThree protein complexes control polarization of epithelial cells: the apicolateral Crumbs and Par-3 complexes and the basolateral Lethal giant larvae complex [1] and [2] . Polarization results in the specific localization of proteins and lipids to different membrane domains. The receptors of the Notch, Hedgehog, and WNT pathways are among the proteins that are polarized, with subcellular receptor localization representing an important aspect of signaling regulation. For example, in the WNT pathway, differential DFz2 receptor localization results in activation of either the canonical or the planar polarity pathway [3]. Despite the large body of research on the vertebrate JAK/STAT pathway, there are no reports indicating polarized signaling. By using the conserved Drosophila JAK/STAT pathway as a system, we find that the receptor and its associated kinase are located in the apical membrane of epithelial cells. Unexpectedly, the transcription factor STAT is enriched in the apicolateral membrane domain of ectoderm epithelial cells in a Par-3-dependent manner. Our results indicate that preassembly of STAT and the Receptor/JAK complex to specific membrane domains is a key aspect for signaling efficiency. Our results also suggest that receptor polarization in the ectoderm cell membrane restricts the cell's response to ligands provided by neighboring cells.
Description6 páginas, 4 figuras.
Publisher version (URL)http://dx.doi.org/10.1016/j.cub.2008.03.055
URIhttp://hdl.handle.net/10261/41355
DOI10.1016/j.cub.2008.03.055
ISSN0960-9822
E-ISSN1879-0445
Appears in Collections:(CABD) Artículos
Files in This Item:
There are no files associated with this item.
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.