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© Emeline Camand
Marquage par immunofluorescence d'astrocytes tumoraux ou astrocytomes (lignée cellulaire humaine U373), montrant en rouge, APC et en vert, la tubuline des microtubules. APC est un supresseur de tumeur qui est impliqué dans la polarisation des astrocytes normaux. La localisation d'APC est altérée dans des lignées de gliomes. Pour essayer de corriger, les dérèglements observés lors de la migration des cellules d'astrocytes tumuraux ou gliomes on cherche à connaitre les mécanismes moléculaires fondamentaux qui controlent la polarisation et la migration cellulaire.
Publication : Current biology : CB

Scrib controls Cdc42 localization and activity to promote cell polarization during astrocyte migration

Team: Cell Polarity, Migration And Cancer
Member: Sandrine Etienne-Manneville
Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Current biology : CB - 02 Nov 2006

Osmani N, Vitale N, Borg JP, Etienne-Manneville S

Link to Pubmed [PMID] – 17081755

Curr. Biol. 2006 Dec;16(24):2395-405

Mammalian Scribble (Scrib) plays a conserved role in polarization of epithelial and neuronal cells. Polarization is essential for migration of a variety of cell types; however, the function of Scrib in this context remains unclear. Scrib has been shown to interact with betaPIX, a guanine nucleotide exchange factor for the small GTPases Rac and Cdc42. Cdc42 controls cell polarity from yeast to mammals during asymmetric cell division and epithelial cell polarization, as well as during cell migration. Cdc42 is, in particular, required for polarization and orientation of astrocytes in a scratch-induced polarized migration assay. Using this assay, we characterized Scrib function during polarized cell migration.