Interaction of the EWS NH2 terminus with BARD1 links the Ewing's sarcoma gene to a common tumor suppressor pathway (original) (raw)

Cancer research, 2002

Abstract

In 85% of Ewing family tumors, the NH2 terminus of EWS is fused to the DNA-binding domain of FLI1, an ets transcription factor. The resulting chimeric protein is a strong transcriptional activator with transforming activity. We report that EWS and EWS-FLI1 interact via their common NH2 terminus with the COOH terminus of BARD1, a putative tumor suppressor, in vitro and in vivo. Because BARD1 associates via its NH2-terminal RING domain with the breast cancer susceptibility gene BRCA1 that provides a platform for interactions with proteins involved in DNA repair and checkpoint control, our results provide a link between the Ewing's sarcoma gene product and the genome surveillance complex.

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