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The FASEB Journal • Research Communication Inhibition of medulloblastoma tumorigenesis by the antiproliferative and pro-differentiative gene PC3

By Stefano Farioli-vecchioli, Mirella Tanori, Laura Micheli, Mariateresa Mancuso, Luca Leonardi, Anna Saran, Maria Teresa Ciotti, Elisabetta Ferretti, Alberto Gulino, Simonetta Pazzaglia, Felice Tirone and Molecular Medicine

Abstract

ABSTRACT Medulloblastoma, the most common brain tumor in childhood, appears to originate from cerebellar granule cell precursors (GCPs), located in the external granular layer (EGL) of the cerebellum. The antiproliferative gene PC3 (Tis21/BTG2) promotes cerebellar neurogenesis by inducing GCPs to shift from proliferation to differentiation. To assess whether PC3 can prevent the neoplastic transformation of GCPs and medulloblastoma development, we crossed transgenic mice conditionally expressing PC3 (TgPC3) in GCPs with Patched1 heterozygous mice (Ptc �/ –), a model of medulloblastoma pathogenesis characterized by hyperactivation of the Sonic Hedgehog pathway. Perinatal up-regulation of PC3 in Ptc �/ – /TgPC3 mice results in a decrease of medulloblastoma incidence of �40 % an

Topics: Granule neurons, the most abundant neur
Year: 2013
OAI identifier: oai:CiteSeerX.psu:10.1.1.318.2260
Provided by: CiteSeerX
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