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Título : Zinc-finger transcription factor Slug contributes to the function of the stem cell factor c-kit signaling pathway
Autor : Pérez-Losada, J.; Sánchez-Martín, M.; Rodríguez-García, A.; Sánchez, Maria Luz; Orfao, Alberto; Flores, Teresa; Sánchez García, Isidro
Fecha de publicación : 2002
Citación : Blood 100(4): 1274-1286 (2002)
Resumen: The stem cell factor c-kit signaling pathway (SCF/c-kit) has been previously implicated in normal hematopoiesis, melanogenesis, and gametogenesis through the formation and migration of c-kit+ cells. These biologic functions are also determinants in epithelial–mesenchymal transitions during embryonic development governed by the Snail family of transcription factors. Here we show that the activation of c-kit by SCF specifically induces the expression of Slug, a Snail family member. Slug mutant mice have a cell-intrinsic defect with pigment deficiency, gonadal defect, and impairment of hematopoiesis. Kit+ cells derived from Slug mutant mice exhibit migratory defects similar to those of c-kit+ cells derived from SCF and c-kit mutant mice. Endogenous Slug is expressed in migratory c-kit+ cells purified from control mice but is not present in c-kit+cells derived from SCF mutant mice or in bone marrow cells from W/Wv mice, though Slug is present in spleen c-kit+ cells of W/Wv (mutants expressing c-kit with reduced surface expression and activity). SCF-induced migration was affected in primary c-kit+ cells purified from Slug−/− mice, providing evidence for a role of Slug in the acquisition of c-kit+ cells with ability to migrate. Slug may thus be considered a molecular target that contributes to the biologic specificity to the SCF/c-kit signaling pathway, opening up new avenues for stem cell mobilization.
Versión del editor: http://bloodjournal.hematologylibrary.org/cgi/reprint/100/4/1274
URI : http://hdl.handle.net/10261/6276
ISSN: 0006-4971
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