PMID- 33451122 OWN - NLM STAT- MEDLINE DCOM- 20210407 LR - 20210407 IS - 1422-0067 (Electronic) IS - 1422-0067 (Linking) VI - 22 IP - 2 DP - 2021 Jan 13 TI - Phosphodiesterase Type-5 Inhibitor Tadalafil Modulates Steroid Hormones Signaling in a Prostate Cancer Cell Line. LID - 10.3390/ijms22020754 [doi] LID - 754 AB - BACKGROUND: The androgen receptor (AR) plays a key role in normal prostate homeostasis and in prostate cancer (PCa) development, while the role of aromatase (Cyp19a1) is still unclear. We evaluated the effects of a treatment with Tadalafil (TAD) on both these proteins. METHODS: Androgen-sensitive human PCa cell line (LnCAP) was incubated with/without TAD (10(-6) M) and bicalutamide (BCT) (10(-4) M) to evaluate a potential modulation on cell proliferation, protein and mRNA expression of Cyp19a, AR and estrogen receptor-beta (ERbeta), respectively. RESULTS: TAD increased early AR nuclear translocation (p < 0.05, after 15 min of exposure), and increased AR transcriptional activity (p < 0.05) and protein expression (p < 0.05) after 24 h. Moreover, after 24 h this treatment upregulated Cyp19a1 and ERbeta mRNA (p < 0.05 and p < 0.005 respectively) and led to an increase in protein expression of both after 48 h (p < 0.05). Interestingly, TAD counteracted Cyp19a1 stimulation induced by BCT (p < 0.05) but did not alter the effect induced by BCT on the AR protein expression. CONCLUSION: We demonstrate for the first time that TAD can significantly modulate AR expression and activity, Cyp19a1 and ERbeta expression in PCa cells, suggesting a specific effect of these proteins. In addition, TAD potentiates the antiproliferative activity of BCT, opening a new clinical scenario in the treatment of PCa. FAU - Bimonte, Viviana M AU - Bimonte VM AD - Department of Movement, Human and Health Sciences, "Foro Italico" University, 00135 Rome, Italy. AD - Department of Experimental Medicine, "Sapienza" University of Rome, 00161 Rome, Italy. AD - Department of Experimental and Clinical Medicine, Magna Graecia University, 88100 Catanzaro, Italy. FAU - Marampon, Francesco AU - Marampon F AD - Department of Radiological, Oncological and Pathological Sciences, "Sapienza" University, 00161 Rome, Italy. FAU - Antonioni, Ambra AU - Antonioni A AD - Department of Experimental Medicine, "Sapienza" University of Rome, 00161 Rome, Italy. FAU - Fittipaldi, Simona AU - Fittipaldi S AUID- ORCID: 0000-0001-7578-395X AD - Department of Biomedicine and Prevention, "Tor Vergata" University, 00133 Rome, Italy. FAU - Ferretti, Elisabetta AU - Ferretti E AUID- ORCID: 0000-0001-7265-6429 AD - Department of Experimental Medicine, "Sapienza" University of Rome, 00161 Rome, Italy. FAU - Pestell, Richard G AU - Pestell RG AUID- ORCID: 0000-0003-3244-8777 AD - Pennsylvania Cancer and Regenerative Medicine Research Center, Baruch S. Blumberg Institute, Pennsylvania Biotechnology Center, Wynnewood, PA 19111, USA. FAU - Curreli, Mariaignazia AU - Curreli M AD - Department of Experimental Medicine, "Sapienza" University of Rome, 00161 Rome, Italy. FAU - Lenzi, Andrea AU - Lenzi A AD - Department of Experimental Medicine, "Sapienza" University of Rome, 00161 Rome, Italy. FAU - Vitale, Giovanni AU - Vitale G AUID- ORCID: 0000-0003-2478-683X AD - Department of Medical Biotechnologies and Translational Medicine, University of Milan, 20122 Milan, Italy. AD - Laboratory of Geriatric and Oncologic Neuroendocrinology Research, Istituto Auxologico Italiano, IRCCS, Cusano Milanino, 20095 Milan, Italy. FAU - Brunetti, Antonio AU - Brunetti A AUID- ORCID: 0000-0003-1533-8779 AD - Department of Health Sciences, Magna Graecia University, 88100 Catanzaro, Italy. FAU - Migliaccio, Silvia AU - Migliaccio S AUID- ORCID: 0000-0002-4563-6630 AD - Department of Movement, Human and Health Sciences, "Foro Italico" University, 00135 Rome, Italy. FAU - Aversa, Antonio AU - Aversa A AUID- ORCID: 0000-0002-2989-2618 AD - Department of Experimental and Clinical Medicine, Magna Graecia University, 88100 Catanzaro, Italy. LA - eng GR - 2015XCR88M_008/Agenzia Italiana del Farmaco, Ministero della Salute/ GR - 2017HBHA98/Agenzia Italiana del Farmaco, Ministero della Salute/ PT - Journal Article DEP - 20210113 PL - Switzerland TA - Int J Mol Sci JT - International journal of molecular sciences JID - 101092791 RN - 0 (AR protein, human) RN - 0 (Biomarkers) RN - 0 (Hormones) RN - 0 (Phosphodiesterase 5 Inhibitors) RN - 0 (Receptors, Androgen) RN - 0 (Steroids) RN - 742SXX0ICT (Tadalafil) SB - IM MH - Biomarkers MH - Cell Line, Tumor MH - Cell Proliferation/drug effects MH - Cell Survival/drug effects MH - Drug Resistance, Neoplasm MH - Gene Expression Profiling MH - Gene Expression Regulation, Neoplastic MH - Hormones/*metabolism MH - Humans MH - Male MH - Phosphodiesterase 5 Inhibitors/*pharmacology MH - Prostatic Neoplasms/drug therapy/etiology/*metabolism/pathology MH - Protein Transport MH - Receptors, Androgen/genetics/metabolism MH - Signal Transduction/*drug effects MH - Steroids/*metabolism MH - Tadalafil/*pharmacology PMC - PMC7828628 OTO - NOTNLM OT - androgen resistance OT - aromatase OT - bicalutamide OT - prostate cancer OT - tadalafil COIS- The authors declare no conflict of interest. EDAT- 2021/01/17 06:00 MHDA- 2021/04/10 06:00 PMCR- 2021/01/13 CRDT- 2021/01/16 01:02 PHST- 2020/12/15 00:00 [received] PHST- 2021/01/07 00:00 [revised] PHST- 2021/01/08 00:00 [accepted] PHST- 2021/01/16 01:02 [entrez] PHST- 2021/01/17 06:00 [pubmed] PHST- 2021/04/10 06:00 [medline] PHST- 2021/01/13 00:00 [pmc-release] AID - ijms22020754 [pii] AID - ijms-22-00754 [pii] AID - 10.3390/ijms22020754 [doi] PST - epublish SO - Int J Mol Sci. 2021 Jan 13;22(2):754. doi: 10.3390/ijms22020754.