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A mouse model of the most aggressive subgroup of human medulloblastoma [HT_MG-430_PM]


ABSTRACT: A series of mouse models designed to mimic pediatric medulloblastoma types in humans were tested by microarray and compared to published human medulloblastoma data Myc-type tumors [dka201-203] were generated by orthotopic injection of Myc-infected cerebellar cells from Cdkn2c-/-, Trp53-/-, Atoh1-GFP mice into the cerebral cortex of immunocompromised nude mice. For Shh-type medulloblastomas [dka204-206], spontaneous medulloblastomas from [Cdkn2c-/-; Trp53Fl/Fl; Nestin-Cre] (Uziel et al.,2005 Genes Dev) were used. FACS-sorted GFP-positive [dka220-222] and GFP-negative [dka211, 212 and 219] populations were obtained from postnatal day 6 Cdkn2c-/-, Trp53-/-, Atoh1-GFP cerebella. Myc-type secondary tumors [dka223-225] were generated by orthotopic transplantation of cultured sphere cells from Myc-type primary tumors.

ORGANISM(S): Mus musculus

SUBMITTER: David Finkelstein 

PROVIDER: E-GEOD-33200 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Medulloblastomas that display a large cell/anaplastic morphology and overexpress the cellular c-MYC gene are highly aggressive and carry a very poor prognosis. This so-called MYC-subgroup differs in its histopathology, gene expression profile, and clinical behavior from other forms of medulloblastoma. We generated a mouse model of MYC-subgroup medulloblastoma by transducing Trp53-null cerebellar progenitor cells with Myc. The cardinal features of these mouse medulloblastomas closely mimic those  ...[more]

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