Abstract

The ubiquitin-dependent proteasomal degradation of proteins controls signaling and cellular survival. An increasing body of evidence suggests that the E3 ubiquitin ligases SIAH1 and SIAH2 are able to dictate the growth, development, and chemo-/radiosensitivity of breast and prostate cancer cells. Here we review the current knowledge on the impact of SIAHs on breast and prostate tumorigenesis. Furthermore, we summarize how stress, hormones, and cytokines regulate SIAH1 and SIAH2 in transformed mammalian cells.

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