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Cancer Cell. 2007 Apr;11(4):361-74.

JUN oncogene amplification and overexpression block adipocytic differentiation in highly aggressive sarcomas.

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1
Institut Curie, Genetics and Biology of Cancers, 26 rue d'Ulm, 75248 Paris cedex 05, France; INSERM U830, F-75005 Paris, France.

Abstract

The human oncogene JUN encodes a component of the AP-1 complex and is consequently involved in a wide range of pivotal cellular processes, including cell proliferation, transformation, and apoptosis. Nevertheless, despite extensive analyses of its functions, it has never been directly involved in a human cancer. We demonstrate here that it is highly amplified and overexpressed in undifferentiated and aggressive human sarcomas, which are blocked at an early step of adipocyte differentiation. We confirm by cellular and xenograft mouse models recapitulating these sarcoma genetics that the failure to differentiate is dependent upon JUN amplification/overexpression.

PMID:
17418412
DOI:
10.1016/j.ccr.2007.02.007
[Indexed for MEDLINE]
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