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The HOX Genes Network in Uro-Genital Cancers: Mechanisms and Potential Therapeutic Implications

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Genito-urinary malignancies (prostate, bladder, renal and testicular cancers) rank high among human tumors with an incidence that varies with age and organ involvement. Prostate cancer is the most commonly detected male cancer followed by bladder and kidney cancers, less frequent in women. Testicular cancer, although rare, is the most frequent cancer in males under 35. The majority of oncogenic and tumor suppressor signaling pathways involved with urogenital cancers converge on sets of transcription factors that ultimately control gene expression resulting in tumor formation and metastatic progression. The activity of these transcription factors is modulated by multiple mechanisms spanning from transcriptional regulation, deregulation of the splicing, maturation, export and location of mRNAs, protein synthesis and post-translational modifications. The recent involvement of the epigenitic mechanisms in the generation and the evolution of cancer has produced a great deal of interest. This is related to the possibility that revealing these mechanisms able to regulate the cell memory program (the gene systems polycomb, trithorax and HOX) may generate important biological and therapeutic achievements. The HOX gene network is the only physically and functionally identifiable transcription factor network located in the human genome controlling crucial cellular processes. Here we describe the implication of the HOX genes in the urogenital embryonic development and cancers. We further highlight the mechanisms uncovered along these processes and involving the HOX genes. Finally, we foresee the specific targeting of HOX genes and in general the cell memory gene program in the therapeutic setting of urogenital malignancies due to their upstream location in these stepwise cell processes and their early deregulation in cancer evolution.

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Keywords: Anti-Epigenetic Drugs; Epigenetic therapies; Epigenetics and cancer; HOTAIR; HOTTIP; HOX genes; HOX genes and cell identity; HOX genes and epithelial-mesenchymal interaction; HOX genes and miRNA; HOX genes and ncRNA; HOX genes and uro-genital cancers; HOX/PBX and therapy; HOXC11 and kidney cancer; HOXC4; HOXC5 and HOXC6 and bladder cancer; HOXC6 and prostate cancer

Document Type: Research Article

Publication date: 2011-11-01

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  • Current Medicinal Chemistry covers all the latest and outstanding developments in medicinal chemistry and rational drug design. Each issue contains a series of timely in-depth reviews written by leaders in the field covering a range of the current topics in medicinal chemistry. Current Medicinal Chemistry is an essential journal for every medicinal chemist who wishes to be kept informed and up-to-date with the latest and most important developments.
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