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EnglishBACKGROUND/AIM: Androgen receptor plays a key role in prostate cancer development and is a causative agent of its radio-resistance. The present study investigated the potential radio-sensitizing effect of enzalutamide, a second-generation anti-androgen, in human prostate cancer cells. MATERIALS AND METHODS: The radio-sensitizing effect of enzalutamide was assessed in the androgen-dependent LNCaP cells and the androgen-independent PC3 cells by clonogenic assay and γ-H2AX assay. RESULTS: Enzalutamide-treated LNCaP cells showed a significant decrease of cell survival at all radiation doses tested. An increased number of γ-H2AX-positive nuclei was observed, suggesting a possible impairment of the DNA repair machinery. Conversely, enzalutamide did not exhibit a significant radio-sensitizing effect on PC3 cells. CONCLUSION: The combination of enzalutamide with ionizing radiation significantly improves radio-sensitivity of hormone-dependent LNCaP cells. Translated in the clinical practice, our results may help to find additional strategies to improve effectiveness of radiotherapy.
| Titolo: | Exploring the role of enzalutamide in combination with radiation therapy: An in vitro study |
| Autori: | |
| Data di pubblicazione: | 2018 |
| Rivista: | |
| Abstract: | BACKGROUND/AIM: Androgen receptor plays a key role in prostate cancer development and is a causative agent of its radio-resistance. The present study investigated the potential radio-sensitizing effect of enzalutamide, a second-generation anti-androgen, in human prostate cancer cells. MATERIALS AND METHODS: The radio-sensitizing effect of enzalutamide was assessed in the androgen-dependent LNCaP cells and the androgen-independent PC3 cells by clonogenic assay and γ-H2AX assay. RESULTS: Enzalutamide-treated LNCaP cells showed a significant decrease of cell survival at all radiation doses tested. An increased number of γ-H2AX-positive nuclei was observed, suggesting a possible impairment of the DNA repair machinery. Conversely, enzalutamide did not exhibit a significant radio-sensitizing effect on PC3 cells. CONCLUSION: The combination of enzalutamide with ionizing radiation significantly improves radio-sensitivity of hormone-dependent LNCaP cells. Translated in the clinical practice, our results may help to find additional strategies to improve effectiveness of radiotherapy. |
| Handle: | http://hdl.handle.net/11379/513025 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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