1
|
Fizazi K, Bernard-Tessier A, Roubaud G, Utriainen T, Barthélémy P, Fléchon A, van der Voet J, Gravis G, Ratta R, Jones R, Parikh O, Tanner M, Antonarakis ES, Baldini C, Peters N, Garratt C, Ikonen T, Pohjanjousi P, Joensuu H, Cook N. Targeted Inhibition of CYP11A1 in Castration-Resistant Prostate Cancer. NEJM EVIDENCE 2024; 3:EVIDoa2300171. [PMID: 38320513 PMCID: PMC10852404 DOI: 10.1056/evidoa2300171] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2024]
Abstract
BACKGROUND: Prostate cancer is regulated by steroid hormones, even in castration-resistant disease. ODM-208, a novel inhibitor of cytochrome P450 11A1 (which catalyzes the first step of steroid-hormone biosynthesis), was investigated in patients with heavily pretreated metastatic castration-resistant prostate cancer (mCRPC). METHODS: CYPIDES is a first-in-human phase 1 (3 + 3 design) and phase 2 study. We administered ODM-208 twice daily with glucocorticoid/mineralocorticoid replacement and ongoing androgen deprivation therapy to adults with previously treated mCRPC, regardless of androgen receptor gene (AR) ligand-binding domain mutations (phase 1) and with activating AR ligand-binding domain mutations (ARmut; phase 2). Safety, pharmacokinetics, steroid-hormone pharmacodynamics, and preliminary efficacy were the key outcomes. RESULTS: Ninety-two patients received one or more doses of ODM-208: 47 in phase 1 (20 [42.6%] with ARmut) and 45 in phase 2 (all ARmut). A dose of ODM-208 of 5 mg twice a day with dexamethasone 1 mg/fludrocortisone 0.1 mg provided a balance between decreased steroidogenesis and toxicity. Treatment-related adrenal insufficiency was the most common toxicity in phase 1 (n=17, 36.2%; necessitating ODM-208 discontinuation in one patient); this toxicity occurred in six patients (13.3%) at 5 mg twice a day in phase 2. Median circulating testosterone levels declined from 3.0 ng/dl (interquartile range, 1.3 to 6.2 ng/dl) at baseline to undetectable levels within the first week of ODM-208 5 mg twice a day treatment in 46 of 53 (87%) patients. A decrease in prostate-specific antigen levels of 50% or more occurred in 14 of 19 (73.7%) patients with ARmut and 2 of 23 (8.7%) patients with AR wild type in phase 1 and in 24 of 45 (53.3%) patients with ARmut in phase 2. CONCLUSIONS: ODM-208 potently inhibited steroid-hormone biosynthesis with the expected toxicity of adrenal insufficiency. Evidence of antitumor activity was observed in this heavily pretreated mCRPC population, especially in those with ARmut. (Funded by Orion Pharma; ClinicalTrials.gov number, NCT03436485.)
Collapse
Affiliation(s)
- Karim Fizazi
- Institut Gustave Roussy, University of Paris-Saclay, Villejuif, France
| | | | | | - Tapio Utriainen
- Comprehensive Cancer Center, Helsinki University Hospital, Helsinki, Finland
| | | | - Aude Fléchon
- Medical Oncology, Centre Léon Bérard, Lyon, France
| | | | | | | | - Robert Jones
- Cardiff University and Velindre University National Health Service Trust, Cardiff, United Kingdom
| | - Omi Parikh
- Oncology, Royal Preston Hospital-Lancashire Teaching Hospitals National Health Service Foundation Trust, Preston, United Kingdom
| | - Minna Tanner
- R&D, Tampere University Hospital, Tampere, Finland
| | | | - Capucine Baldini
- Drug Development Department, Université Paris-Saclay, Gustave Roussy, Villejuif, France
| | - Niamh Peters
- University of Manchester and the Christie National Health Service Foundation Trust, Manchester, United Kingdom
| | | | | | | | | | - Natalie Cook
- University of Manchester and the Christie National Health Service Foundation Trust, Manchester, United Kingdom
| |
Collapse
|
2
|
TBECH, 1,2-dibromo-4-(1,2 dibromoethyl) cyclohexane, alters androgen receptor regulation in response to mutations associated with prostate cancer. Toxicol Appl Pharmacol 2016; 307:91-101. [DOI: 10.1016/j.taap.2016.07.018] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Revised: 07/15/2016] [Accepted: 07/25/2016] [Indexed: 01/17/2023]
|
3
|
LASSO-ing Potential Nuclear Receptor Agonists and Antagonists: A New Computational Method for Database Screening. ACTA ACUST UNITED AC 2013. [DOI: 10.1155/2013/513537] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Nuclear receptors (NRs) are important biological macromolecular transcription factors that are implicated in multiple biological pathways and may interact with other xenobiotics that are endocrine disruptors present in the environment. Examples of important NRs include the androgen receptor (AR), estrogen receptors (ER), and the pregnane X receptor (PXR). In this study we have utilized the Ligand Activity by Surface Similarity Order (LASSO) method, a ligand-based virtual screening strategy to derive structural (surface/shape) molecular features used to generate predictive models of biomolecular activity for AR, ER, and PXR. For PXR, twenty-five models were built using between 8 to 128 agonists and tested using 3000, 8000, and 24,000 drug-like decoys including PXR inactive compounds (N=228). Preliminary studies with AR and ER using LASSO suggested the utility of this approach with 2-fold enrichment factors at 20%. We found that models with 64–128 PXR actives provided enrichment factors of 10-fold (10% actives in the top 1% of compounds screened). The LASSO models for AR and ER have been deployed and are freely available online, and they represent a ligand-based prediction method for putative NR activity of compounds in this database.
Collapse
|
4
|
Dhingra N, Bhagwat D. Benign prostatic hyperplasia: An overview of existing treatment. Indian J Pharmacol 2011; 43:6-12. [PMID: 21455413 PMCID: PMC3062123 DOI: 10.4103/0253-7613.75657] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2010] [Revised: 06/30/2010] [Accepted: 10/22/2010] [Indexed: 11/04/2022] Open
Abstract
Benign prostatic hyperplasia (BPH) is the most common condition in aging men, associated with lower urinary tract symptoms (LUTS). A better understanding of the prostate physiology, function, and pathogenesis has led to the development of promising agents, useful in the management of LUTS in men. The specific approach used to treat BPH depends upon number of factors like age, prostrate size, weight, prostate-specific antigen level, and severity of the symptoms. 5α-reductase inhibitors decrease the production of dihydrotestosterone within the prostate, which results in decreased prostate volume, increased peak urinary flow rate, improvement of symptoms, decreased risk of acute urinary retention, and need for surgical intervention. α(1)-adrenergic receptor (α(1)-AR) antagonists decrease LUTS and increase urinary flow rates in men with symptomatic BPH, but do not reduce the long-term risk of urinary retention or need for surgical intervention. Clinical efficacy of either 5α-reductase inhibitor or α(1)-AR antagonist has been further improved by using combination therapy; however, long-term outcomes are still awaited. Many more potential new therapies are under development that may improve the treatment of BPH. This article gives a brief account of rationale and efficacy of different treatment options presently available in the management of BPH.
Collapse
Affiliation(s)
- Neelima Dhingra
- Pharmaceutical Chemistry Division, University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh - 160 014, India
| | | |
Collapse
|
6
|
Yang W, Mu Y, Giesy JP, Zhang A, Yu H. Anti-androgen activity of polybrominated diphenyl ethers determined by comparative molecular similarity indices and molecular docking. CHEMOSPHERE 2009; 75:1159-64. [PMID: 19324393 DOI: 10.1016/j.chemosphere.2009.02.047] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2008] [Revised: 02/15/2009] [Accepted: 02/18/2009] [Indexed: 05/22/2023]
Abstract
Some polybrominated diphenyl ethers (PBDEs) may have endocrine-disrupting (ED) potencies. In this study, molecular docking and three-dimensional quantitative structure-activity relationship (3D-QSAR) were performed to explore the possible anti-androgenicity of PBDEs. Based on the alignment generated by docking conformations, a highly predictive comparative molecular similarity indices analysis (CoMSIA) model was developed with q(2) value of 0.642 and r(2) value of 0.973. The contributions of the steric, electrostatic, hydrophobic fields to the CoMSIA model are 13.1%, 61.0% and 25.9%, respectively. Br substitutions which are at meta and para positions of PBDEs will be unfavorable for androgen receptor (AR) antagonism and ortho Br substitutions for PBDEs are favorable for anti-androgen activity. Mapping the 3D-QSAR models to the active site of the AR provides new insight into the AR-PBDEs interaction. CoMSIA field contributions showed good consistency with structural features of the AR binding site and can be used to predict anti-androgen activities of other PBDE congeners.
Collapse
Affiliation(s)
- Weihua Yang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210093, PR China
| | | | | | | | | |
Collapse
|
7
|
Li Y, Wang Y, Ding J, Wang Y, Chang Y, Zhang S. In silico Prediction of Androgenic and Nonandrogenic Compounds Using Random Forest. ACTA ACUST UNITED AC 2009. [DOI: 10.1002/qsar.200810100] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
8
|
Ai N, Krasowski MD, Welsh WJ, Ekins S. Understanding nuclear receptors using computational methods. Drug Discov Today 2009; 14:486-94. [PMID: 19429508 DOI: 10.1016/j.drudis.2009.03.003] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2008] [Revised: 03/03/2009] [Accepted: 03/04/2009] [Indexed: 02/06/2023]
Abstract
Nuclear receptors (NRs) are important targets for therapeutic drugs. NRs regulate transcriptional activities through binding to ligands and interacting with several regulating proteins. Computational methods can provide insights into essential ligand-receptor and protein-protein interactions. These in turn have facilitated the discovery of novel agonists and antagonists with high affinity and specificity as well as have aided in the prediction of toxic side effects of drugs by identifying possible off-target interactions. Here, we review the application of computational methods toward several clinically important NRs (with special emphasis on PXR) and discuss their use for screening and predicting the toxic side effects of xenobiotics.
Collapse
Affiliation(s)
- Ni Ai
- Department of Pharmacology, Robert Wood Johnson Medical School, University of Medicine & Dentistry of New Jersey, Piscataway, NJ 08854, USA
| | | | | | | |
Collapse
|
9
|
McLean SR, Gana-Weisz M, Hartzoulakis B, Frow R, Whelan J, Selwood D, Boshoff C. Imatinib binding and cKIT inhibition is abrogated by the cKIT kinase domain I missense mutation Val654Ala. Mol Cancer Ther 2005; 4:2008-15. [PMID: 16373716 DOI: 10.1158/1535-7163.mct-05-0070] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Several activating mutations in the cKIT receptor tyrosine kinase are associated with the development and progression of gastrointestinal stromal tumors (GIST). Treatment of GIST with the tyrosine kinase inhibitor imatinib (Gleevec, STI571; Novartis, Basel, Switzerland) increases patient survival. However, many patients develop resistance to imatinib following initial responses. We sequenced cKIT exons from two patients with GIST after the development of imatinib resistance, revealing a point mutation in kinase domain I (exon 13), Val654Ala, which has been associated previously with relapse and resistance. Molecular modeling of cKIT-imatinib complexes shows that this residue is located in the drug-binding site and that the Val654Ala mutation disrupts drug binding by removing hydrophobic contacts with the central diaminophenyl ring of imatinib. Loss of these contacts results in a destabilizing effect on two key hydrogen bonds between imatinib and Asp310 and Thr670 of cKIT. Calculations based on published crystallography data show an estimated destabilization energy of 2.25 kcal/mol in the Val654Ala cKIT compared with wild type. When present on the same cKIT allele as an oncogenic mutation, the Val654Ala mutation abolishes imatinib-mediated inhibition of cKIT phosphoactivation in vitro. These results highlight some of the structural and functional consequences of the Val654Ala mutation in relapsing imatinib-resistant GIST and emphasize the importance of tumor genetics in drug development and patient-specific cancer treatment regimens.
Collapse
Affiliation(s)
- Sean R McLean
- Cancer Research UK Viral Oncology Group, Wolfson Institute for Biomedical Research, University College London, London WC1E 6BT, United Kingdom
| | | | | | | | | | | | | |
Collapse
|
10
|
Sun Y, Welsh WJ, Latour RA. Prediction of the orientations of adsorbed protein using an empirical energy function with implicit solvation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2005; 21:5616-26. [PMID: 15924498 DOI: 10.1021/la046932o] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
When simulating protein adsorption behavior, decisions must first be made regarding how the protein should be oriented on the surface. To address this problem, we have developed a molecular simulation program that combines an empirical adsorption free energy function with an efficient configurational search method to calculate orientation-dependent adsorption free energies between proteins and functionalized surfaces. The configuration space is searched systematically using a quaternion rotation technique, and the adsorption free energy is evaluated using an empirical energy function with an efficient grid-based calculational method. In this paper, the developed method is applied to analyze the preferred orientations of a model protein, lysozyme, on various functionalized alkanethiol self-assembled monolayer (SAM) surfaces by the generation of contour graphs that relate adsorption free energy to adsorbed orientation, and the results are compared with experimental observations. As anticipated, the adsorbed orientation of lysozyme is predicted to be dependent on the discrete organization of the functional groups presented by the surface. Lysozyme, which is a positively charged protein, is predicted to adsorb on its 'side' on both hydrophobic and negatively charged surfaces. On surfaces with discrete positively charged sites, attractive interaction energies can also be obtained due to the presence of discrete local negative charges present on the lysozyme surface. In this case, 'end-on' orientations are preferred. Additionally, SAM surface models with mixed functionality suggest that the interactions between lysozyme and surfaces could be greatly enhanced if individual surface functional groups are able to access the catalytic cleft region of lysozyme, similar to ligand-receptor interactions. The contour graphs generated by this method can be used to identify low-energy orientations that can then be used as starting points for further simulations to investigate conformational changes induced in protein structure following initial adsorption.
Collapse
Affiliation(s)
- Yu Sun
- Department of Bioengineering and Center for Advanced Engineering Fibers & Films (CAEFF), Clemson University, Clemson, South Carolina 29634, USA
| | | | | |
Collapse
|