Scientific Publications

Integrative genomic approaches identify IKBKE as a breast cancer oncogene.

Publication TypeJournal Article
AuthorsBoehm, JS, Zhao JJ, Yao J., Kim SY, Firestein R., Dunn IF, Sjostrom SK, Garraway LA, Weremowicz S., Richardson AL, Greulich H., Stewart CJ, Mulvey LA, Shen RR, Ambrogio L., Hirozane-Kishikawa T., Hill DE, Vidal M., Meyerson M., Grenier JK, Hinkle G., Root DE, Roberts TM, Lander E. S., Polyak K., and Hahn WC
AbstractThe karyotypic chaos exhibited by human epithelial cancers complicates efforts to identify mutations critical for malignant transformation. Here we integrate complementary genomic approaches to identify human oncogenes. We show that activation of the ERK and phosphatidylinositol 3-kinase (PI3K) signaling pathways cooperate to transform human cells. Using a library of activated kinases, we identify several kinases that replace PI3K signaling and render cells tumorigenic. Whole genome structural analyses reveal that one of these kinases, IKBKE (IKKepsilon), is amplified and overexpressed in breast cancer cell lines and patient-derived tumors. Suppression of IKKepsilon expression in breast cancer cell lines that harbor IKBKE amplifications induces cell death. IKKepsilon activates the nuclear factor-kappaB (NF-kappaB) pathway in both cell lines and breast cancers. These observations suggest a mechanism for NF-kappaB activation in breast cancer, implicate the NF-kappaB pathway as a downstream mediator of PI3K, and provide a framework for integrated genomic approaches in oncogene discovery.
Year of Publication2007
JournalCell
Volume129
Issue6
Pages1065-79
Date Published (YYYY/MM/DD)2007/06/15
ISSN Number0092-8674
DOI10.1016/j.cell.2007.03.052
PubMedhttp://www.ncbi.nlm.nih.gov/pubmed/17574021?dopt=Abstract