Please note that we have stopped the regular imports of Gene Expression Omnibus (GEO) data into ArrayExpress. This may not be the latest version of this experiment.
E-GEOD-7930 - Transcription profiling of human prostate cancer primary cell line vs metastasis cell line reveals Protein 4.1B suppresses prostate cancer progression and metastasis
Submitted on 28 May 2007, released on 15 June 2008, last updated on 27 March 2012
Protein 4.1B is a 4.1/ezrin/radixin/moesin (FERM) domain-containing protein whose expression is frequently lost in a variety of human tumors, including meningiomas, non-small-cell lung cancers and breast carcinomas. However, its potential tumor suppressive function under in vivo conditions remains to be validated. In a screen for genes involved with prostate cancer metastasis, we found that 4.1B expression is reduced in highly metastatic tumors. Downregulation of 4.1B increased the metastatic propensity of poorly metastatic cells in an orthotopic model of prostate cancer. Furthermore, 4.1B-deficient mice displayed increased susceptibility for developing aggressive, spontaneous prostate carcinomas. In both cases, enhanced tumor malignancy was associated with reduced apoptosis. As expression of Protein 4.1B is frequently downregulated in human clinical prostate cancer, as well as in a spectrum of other tumor types, these results suggest a more general role for Protein 4.1B as a negative regulator of cancer progression to metastatic disease. Experiment Overall Design: primary cell line vs metastasis cell line
transcription profiling by array, unknown experiment type
Protein 4.1B suppresses prostate cancer progression and metastasis. Sunny Y Wong, Herbert Haack, Joseph L Kissil, Marc Barry, Roderick T Bronson, Steven S Shen, Charles A Whittaker, Denise Crowley, Richard O Hynes. Proc Natl Acad Sci U S A 104(31):12784-9 (2007)