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C2ORF40 suppresses breast cancer cell proliferation and invasion through modulating expression of M phase cell cycle genes

AutorMao, Jian-Hua; Castellanos-Martín, Andrés ; Abad, María del Mar; Cruz, Juan Jesús; Pérez-Losada, J. ; Wei, Guangwei
Fecha de publicación2013
EditorTaylor & Francis
CitaciónEpigenetics 8(6): 571-583 (2013)
ResumenRecently, it has been suggested that C2ORF40 is a candidate tumor suppressor gene in breast cancer. However, the mechanism for reduced expression of C2ORF40 and its functional role in breast cancers remain unclear. Here we show that C2ORF40 is frequently silenced in human primary breast cancers and cell lines through promoter hypermethylation. C2ORF40 mRNA level is significantly associated with patient disease-free survival and distant cancer metastasis. Overexpression of C2ORF40 inhibits breast cancer cell proliferation, migration and invasion. By contrast, silencing C2ORF40 expression promotes these biological phenotypes. Bioinformatics and FACS analysis reveal C2ORF40 functions at G2/M phase by downregulation of mitotic genes expression, including UBE2C. Our results suggest that C2ORF40 acts as a tumor suppressor gene in breast cancer pathogenesis and progression and is a candidate prognostic marker for this disease.
URIhttp://hdl.handle.net/10261/134393
DOI10.4161/epi.24626
Identificadoresdoi: 10.4161/epi.24626
issn: 1559-2294
e-issn: 1559-2308
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