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

Egr1 promotes growth and survival of prostate cancer cells. Identification of novel Egr1 target genes.

In the majority of aggressive tumorigenic prostate cancer cells, the transcription factor Egr1 is overexpressed. We provide new insights of Egr1 involvement in proliferation and survival of TRAMP C2 prostate cancer cells by the identification of several new target genes controlling growth, cell cycle progression, and apoptosis such as cyclin D2, P19ink4d, and Fas. Egr1 regulation of these genes, identified by Affymetrix microarray, was confirmed by real-time PCR, immunoblot, and chromatin immunoprecipitation assays. Furthermore we also showed that Egr1 is responsible for cyclin D2 overexpression in tumorigenic DU145 human prostate cells. The regulation of these genes by Egr1 was demonstrated using Egr1 antisense oligonucleotides that further implicated Egr1 in resistance to apoptotic signals. One mechanism was illustrated by the ability of Egr1 to inhibit CD95 (Fas/ Apo) expression, leading to insensitivity to FasL. The results provide a mechanistic basis for the oncogenic role of Egr1 in TRAMP C2 prostate cancer cells.[1]


  1. Egr1 promotes growth and survival of prostate cancer cells. Identification of novel Egr1 target genes. Virolle, T., Krones-Herzig, A., Baron, V., De Gregorio, G., Adamson, E.D., Mercola, D. J. Biol. Chem. (2003) [Pubmed]
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