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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Up-regulation of tumor susceptibility gene 101 protein in ovarian carcinomas revealed by proteomics analyses.

Small GTPase RAS plays a critical role in cellular signaling and oncogenic transformation. Proteomics analysis of genetically defined human ovarian cancer models identified the tumor susceptibility gene 101 (TSG101) as a downstream target of RAS oncogene. Mechanistic studies revealed a novel post-translational regulation of TSG101 through the RAS/RAF/MEK/MAPK signaling pathway and downstream molecules p14(ARF)/HDM2. Immunoanalysis using ovarian cancer samples and microtissue array revealed elevated TSG101 levels in human ovarian carcinomas. Silencing of TSG101 by short interfering RNA in ovarian cancer cells led to growth inhibition and cell death. Concurrent with the apparent growth-inhibitory effect, the levels of the CBP/p300-interacting transactivator with ED-rich tail 2 (CITED2) and hypoxia-inducible factor 1alpha (HIF-1alpha), as well as its cellular activity, were markedly reduced after TSG101 knockdown. These results demonstrate that TSG101 is important for CITED2- and HIF-1alpha-mediated cellular regulation in ovarian carcinomas.[1]

References

  1. Up-regulation of tumor susceptibility gene 101 protein in ovarian carcinomas revealed by proteomics analyses. Young, T.W., Mei, F.C., Rosen, D.G., Yang, G., Li, N., Liu, J., Cheng, X. Mol. Cell Proteomics (2007) [Pubmed]
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