Wednesday, July 4, 2012

Epithelial–Mesenchymal Transition in the Prostate Caused by Androgen Deprivation


Currently, there is a well-known therapy for prostate cancer in the United States – the deprivation of androgen!  Though this process is proven to effectively fight androgen-dependent diseases, lack of androgen often results in an androgen-independent mechanism that could lead to worst cases.

Such type of cancer, specifically castration-resistant prostate cancer, poses a major challenge in the field of medicine. Furthermore, the processes in this castration resistance mechanism are not yet fully well grasped. Epithelial–mesenchymal transition (EMT) is a major developmental process and has been identified as the major factor in cancer metastasis and resistance to therapeutic processes recently.  Until today, the various factors that may contribute to EMT in human cancers are still unclear.

There was this experiment which showed that both the normal mouse prostate tissue and human LuCaP35 prostate tumor tissue display an EMT.  It further shows increased stem cell-like features in prostate tumors from patients given androgen-deprivation therapy. 

To sum it all, this experiment shows for the first time that androgen deprivation induces ENT either in normal prostate or in prostate cancer.  This recent experiment clinically reveals an important consequence of a standard-of-care treatment for prostate cancer.

Reference:  www.cdc.gov

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