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Involvement of PEG10 in human hepatocellular carcinogenesis through interaction with SIAH1.

Okabe H., Satoh S., Furukawa Y., Kato T., Hasegawa S., Nakajima Y., Yamaoka Y., Nakamura Y.

Through a genome-wide cDNA microarray, we identified that the paternally expressed gene 10 (PEG10) was highly expressed in a great majority of hepatocellular carcinomas, although its expression was absent in normal liver cells. Exogenous expression of PEG10 conferred oncogenic activity and transfection of hepatoma cells with antisense S-oligonucleotides suppressing PEG10 resulted in their growth inhibition. Additional experiments revealed that PEG10 protein associated with SIAH1, a mediator of apoptosis, and that overexpression of PEG10 decreased the cell death mediated by SIAH1. These findings suggested that development of drug(s) inhibiting PEG10 activity could be a novel approach for the treatment of hepatocellular carcinomas.

Cancer Res. 63:3043-3048(2003) [PubMed] [Europe PMC]

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