Androgen receptor levels are increased by interferons in human prostate stromal and epithelial cells
| Autor: | N Mohideen, Divaker Choubey, Fatouma Alimirah, Z Basrawala, Steven C. Campbell, Hong Xin, Robert C. Flanigan |
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| Rok vydání: | 2005 |
| Předmět: |
Adult
Male Cancer Research medicine.medical_specialty Stromal cell medicine.drug_class Antineoplastic Agents Biology medicine.disease_cause Interferon-gamma Prostate Interferon Internal medicine Genetics medicine Humans Molecular Biology Cells Cultured Cell Proliferation Protein Synthesis Inhibitors Cell growth Interferon-alpha Prostatic Neoplasms Epithelial Cells Interferon-beta Androgen Epithelium Androgen receptor Endocrinology medicine.anatomical_structure Receptors Androgen Cancer research Dactinomycin Stromal Cells Carcinogenesis medicine.drug |
| Zdroj: | Oncogene. 25(19) |
| ISSN: | 0950-9232 |
| Popis: | Proliferation of normal and malignant prostate epithelium is regulated by androgen stimulation via both the androgen receptor (AR)-positive stromal and epithelial cells. However, it is not known how AR expression is regulated in human prostate cells. We report that treatment of normal human prostate stromal cells (PrSCs) with type I IFN (alpha or beta), but not type II IFN (gamma), resulted in increased levels of AR protein. The maximal increase in AR protein levels was dependent on the dose and the duration of the IFN-alpha treatment. We found that the increase in AR protein levels was independent of de novo transcription and protein synthesis. Interestingly, the IFN-alpha treatment of PrSCs resulted in considerable nuclear accumulation of AR, stimulation of AR-mediated transcription of reporter genes, and retardation of cell proliferation. Furthermore, treatment of normal human prostate epithelial cells with IFNs (alpha, beta or gamma) also resulted in increased levels of AR protein. Together, our observations identify the androgen receptor as an IFN-regulated protein in normal human prostate stromal and epithelial cells and predict that IFN-induced levels of AR in prostate cells contribute to the regulation of androgen signaling. |
| Databáze: | OpenAIRE |
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