1
|
Panknin O, Wagenfeld A, Bone W, Bender E, Nowak-Reppel K, Fernández-Montalván AE, Nubbemeyer R, Bäurle S, Ring S, Schmees N, Prien O, Schäfer M, Friedrich C, Zollner TM, Steinmeyer A, Mueller T, Langer G. Discovery and Characterization of BAY 1214784, an Orally Available Spiroindoline Derivative Acting as a Potent and Selective Antagonist of the Human Gonadotropin-Releasing Hormone Receptor as Proven in a First-In-Human Study in Postmenopausal Women. J Med Chem 2020; 63:11854-11881. [PMID: 32960053 DOI: 10.1021/acs.jmedchem.0c01076] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The growth of uterine fibroids is sex hormone-dependent and commonly associated with highly incapacitating symptoms. Most treatment options consist of the control of these hormonal effects, ultimately blocking proliferative estrogen signaling (i.e., oral contraceptives/antagonization of human gonadotropin-releasing hormone receptor [hGnRH-R] activity). Full hGnRH-R blockade, however, results in menopausal symptoms and affects bone mineralization, thus limiting treatment duration or demanding estrogen add-back approaches. To overcome such issues, we aimed to identify novel, small-molecule hGnRH-R antagonists. This led to the discovery of compound BAY 1214784, an orally available, potent, and selective hGnRH-R antagonist. Altering the geminal dimethylindoline core of the initial hit compound to a spiroindoline system significantly improved GnRH-R antagonist potencies across several species, mandatory for a successful compound optimization in vivo. In a first-in-human study in postmenopausal women, once daily treatment with BAY 1214784 effectively lowered plasma luteinizing hormone levels by up to 49%, at the same time being associated with low pharmacokinetic variability and good tolerability.
Collapse
Affiliation(s)
- Olaf Panknin
- Research & Development, Pharmaceuticals, Bayer AG, Müllerstrasse 170, 13342 Berlin, Germany
| | - Andrea Wagenfeld
- Research & Development, Pharmaceuticals, Bayer AG, Müllerstrasse 170, 13342 Berlin, Germany
| | - Wilhelm Bone
- Research & Development, Pharmaceuticals, Bayer AG, Müllerstrasse 170, 13342 Berlin, Germany
| | - Eckhard Bender
- Research & Development, Pharmaceuticals, Bayer AG, Aprather Weg 18a, 42113 Wuppertal, Germany
| | - Katrin Nowak-Reppel
- Research & Development, Pharmaceuticals, Bayer AG, Müllerstrasse 170, 13342 Berlin, Germany
| | | | - Reinhard Nubbemeyer
- Research & Development, Pharmaceuticals, Bayer AG, Müllerstrasse 170, 13342 Berlin, Germany
| | - Stefan Bäurle
- Research & Development, Pharmaceuticals, Bayer AG, Müllerstrasse 170, 13342 Berlin, Germany
| | - Sven Ring
- Research & Development, Pharmaceuticals, Bayer AG, Müllerstrasse 170, 13342 Berlin, Germany
| | - Norbert Schmees
- Research & Development, Pharmaceuticals, Bayer AG, Müllerstrasse 170, 13342 Berlin, Germany
| | - Olaf Prien
- Research & Development, Pharmaceuticals, Bayer AG, Müllerstrasse 170, 13342 Berlin, Germany
| | - Martina Schäfer
- Research & Development, Pharmaceuticals, Bayer AG, Müllerstrasse 170, 13342 Berlin, Germany
| | - Christian Friedrich
- Research & Development, Pharmaceuticals, Bayer AG, Müllerstrasse 170, 13342 Berlin, Germany
| | - Thomas M Zollner
- Research & Development, Pharmaceuticals, Bayer AG, Müllerstrasse 170, 13342 Berlin, Germany
| | - Andreas Steinmeyer
- Research & Development, Pharmaceuticals, Bayer AG, Müllerstrasse 170, 13342 Berlin, Germany
| | - Thomas Mueller
- Research & Development, Pharmaceuticals, Bayer AG, Aprather Weg 18a, 42113 Wuppertal, Germany
| | - Gernot Langer
- Research & Development, Pharmaceuticals, Bayer AG, Müllerstrasse 170, 13342 Berlin, Germany
| |
Collapse
|
2
|
Schulze VK, Klar U, Kosemund D, Wengner AM, Siemeister G, Stöckigt D, Neuhaus R, Lienau P, Bader B, Prechtl S, Holton SJ, Briem H, Marquardt T, Schirok H, Jautelat R, Bohlmann R, Nguyen D, Fernández-Montalván AE, Bömer U, Eberspaecher U, Brüning M, Döhr O, Raschke M, Kreft B, Mumberg D, Ziegelbauer K, Brands M, von Nussbaum F, Koppitz M. Treating Cancer by Spindle Assembly Checkpoint Abrogation: Discovery of Two Clinical Candidates, BAY 1161909 and BAY 1217389, Targeting MPS1 Kinase. J Med Chem 2020; 63:8025-8042. [PMID: 32338514 DOI: 10.1021/acs.jmedchem.9b02035] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Inhibition of monopolar spindle 1 (MPS1) kinase represents a novel approach to cancer treatment: instead of arresting the cell cycle in tumor cells, cells are driven into mitosis irrespective of DNA damage and unattached/misattached chromosomes, resulting in aneuploidy and cell death. Starting points for our optimization efforts with the goal to identify MPS1 inhibitors were two HTS hits from the distinct chemical series "triazolopyridines" and "imidazopyrazines". The major initial issue of the triazolopyridine series was the moderate potency of the HTS hits. The imidazopyrazine series displayed more than 10-fold higher potencies; however, in the early project phase, this series suffered from poor metabolic stability. Here, we outline the evolution of the two hit series to clinical candidates BAY 1161909 and BAY 1217389 and reveal how both clinical candidates bind to the ATP site of MPS1 kinase, while addressing different pockets utilizing different binding interactions, along with their synthesis and preclinical characterization in selected in vivo efficacy models.
Collapse
Affiliation(s)
- Volker K Schulze
- Research & Development, Pharmaceuticals, Bayer AG, 13353 Berlin, Germany
| | - Ulrich Klar
- Research & Development, Pharmaceuticals, Bayer AG, 13353 Berlin, Germany
| | - Dirk Kosemund
- Research & Development, Pharmaceuticals, Bayer AG, 13353 Berlin, Germany
| | - Antje M Wengner
- Research & Development, Pharmaceuticals, Bayer AG, 13353 Berlin, Germany
| | - Gerhard Siemeister
- Research & Development, Pharmaceuticals, Bayer AG, 13353 Berlin, Germany
| | - Detlef Stöckigt
- Research & Development, Pharmaceuticals, Bayer AG, 13353 Berlin, Germany
| | - Roland Neuhaus
- Research & Development, Pharmaceuticals, Bayer AG, 13353 Berlin, Germany
| | - Philip Lienau
- Research & Development, Pharmaceuticals, Bayer AG, 13353 Berlin, Germany
| | - Benjamin Bader
- Research & Development, Pharmaceuticals, Bayer AG, 13353 Berlin, Germany
| | - Stefan Prechtl
- Research & Development, Pharmaceuticals, Bayer AG, 13353 Berlin, Germany
| | - Simon J Holton
- Research & Development, Pharmaceuticals, Bayer AG, 13353 Berlin, Germany
| | - Hans Briem
- Research & Development, Pharmaceuticals, Bayer AG, 13353 Berlin, Germany
| | - Tobias Marquardt
- Research & Development, Pharmaceuticals, Bayer AG, 42113 Wuppertal, Germany
| | - Hartmut Schirok
- Research & Development, Pharmaceuticals, Bayer AG, 42113 Wuppertal, Germany
| | - Rolf Jautelat
- Research & Development, Pharmaceuticals, Bayer AG, 42113 Wuppertal, Germany
| | - Rolf Bohlmann
- Research & Development, Pharmaceuticals, Bayer AG, 13353 Berlin, Germany
| | - Duy Nguyen
- Research & Development, Pharmaceuticals, Bayer AG, 13353 Berlin, Germany
| | | | - Ulf Bömer
- Research & Development, Pharmaceuticals, Bayer AG, 13353 Berlin, Germany
| | - Uwe Eberspaecher
- Research & Development, Pharmaceuticals, Bayer AG, 13353 Berlin, Germany
| | - Michael Brüning
- Research & Development, Pharmaceuticals, Bayer AG, 13353 Berlin, Germany
| | - Olaf Döhr
- Research & Development, Pharmaceuticals, Bayer AG, 13353 Berlin, Germany
| | - Marian Raschke
- Research & Development, Pharmaceuticals, Bayer AG, 13353 Berlin, Germany
| | - Bertolt Kreft
- Research & Development, Pharmaceuticals, Bayer AG, 13353 Berlin, Germany
| | - Dominik Mumberg
- Research & Development, Pharmaceuticals, Bayer AG, 13353 Berlin, Germany
| | - Karl Ziegelbauer
- Research & Development, Pharmaceuticals, Bayer AG, 13353 Berlin, Germany
| | - Michael Brands
- Research & Development, Pharmaceuticals, Bayer AG, 13353 Berlin, Germany
| | - Franz von Nussbaum
- Research & Development, Pharmaceuticals, Bayer AG, 13353 Berlin, Germany
| | - Marcus Koppitz
- Research & Development, Pharmaceuticals, Bayer AG, 13353 Berlin, Germany
| |
Collapse
|
3
|
Georgi V, Dubrovskiy A, Steigele S, Fernández-Montalván AE. Considerations for improved performance of competition association assays analysed with the Motulsky-Mahan's "kinetics of competitive binding" model. Br J Pharmacol 2019; 176:4731-4744. [PMID: 31444916 PMCID: PMC7029771 DOI: 10.1111/bph.14841] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2018] [Revised: 06/26/2019] [Accepted: 08/07/2019] [Indexed: 12/29/2022] Open
Abstract
Background and Purpose Target engagement dynamics can influence drugs' pharmacological effects. Kinetic parameters for drug:target interactions are often quantified by evaluating competition association experiments—measuring simultaneous protein binding of labelled tracers and unlabelled test compounds over time—with Motulsky–Mahan's “kinetics of competitive binding” model. Despite recent technical improvements, the current assay formats impose practical limitations to this approach. This study aims at the characterisation, understanding and prevention of these experimental constraints, and associated analytical challenges. Experimental Approach Monte Carlo simulations were used to run virtual kinetic and equilibrium tracer binding and competition experiments in both normal and perturbed assay conditions. Data were fitted to standard equations derived from the mass action law (including Motulsky–Mahan's) and to extended versions aiming to cope with frequently observed deviations of the canonical traces. Results were compared to assess the precision and accuracy of these models and identify experimental factors influencing their performance. Key Results Key factors influencing the precision and accuracy of the Motulsky–Mahan model are the interplay between compound dissociation rates, measurement time and interval frequency, tracer concentration and binding kinetics and the relative abundance of equilibrium complexes in vehicle controls. Experimental results produced recommendations for better design of tracer characterisation experiments and new strategies to deal with systematic signal decay. Conclusions and Implications Our data advances our comprehension of the Motulsky–Mahan kinetics of competitive binding models and provides experimental design recommendations, data analysis tools, and general guidelines for its practical application to in vitro pharmacology and drug screening.
Collapse
Affiliation(s)
| | - Alexey Dubrovskiy
- Research and Development, Genedata AG, Basel, Switzerland.,Software Engineering, Google Inc., Zürich, Switzerland
| | | | - Amaury E Fernández-Montalván
- Drug Discovery, Pharmaceuticals, Bayer AG, Berlin, Germany.,Compound Screening, Institut de Recherches Servier, Croissy-sur-Seine, France
| |
Collapse
|
4
|
Siemeister G, Mengel A, Fernández-Montalván AE, Bone W, Schröder J, Zitzmann-Kolbe S, Briem H, Prechtl S, Holton SJ, Mönning U, von Ahsen O, Johanssen S, Cleve A, Pütter V, Hitchcock M, von Nussbaum F, Brands M, Ziegelbauer K, Mumberg D. Inhibition of BUB1 Kinase by BAY 1816032 Sensitizes Tumor Cells toward Taxanes, ATR, and PARP Inhibitors In Vitro and In Vivo. Clin Cancer Res 2018; 25:1404-1414. [PMID: 30429199 DOI: 10.1158/1078-0432.ccr-18-0628] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Revised: 07/03/2018] [Accepted: 11/08/2018] [Indexed: 11/16/2022]
Abstract
PURPOSE The catalytic function of BUB1 is required for chromosome arm resolution and positioning of the chromosomal passenger complex for resolution of spindle attachment errors and plays only a minor role in spindle assembly checkpoint activation. Here, we present the identification and preclinical pharmacologic profile of the first BUB1 kinase inhibitor with good bioavailability. EXPERIMENTAL DESIGN The Bayer compound library was screened for BUB1 kinase inhibitors and medicinal chemistry efforts to improve target affinity and physicochemical and pharmacokinetic parameters resulting in the identification of BAY 1816032 were performed. BAY 1816032 was characterized for kinase selectivity, inhibition of BUB1 signaling, and inhibition of tumor cell proliferation alone and in combination with taxanes, ATR, and PARP inhibitors. Effects on tumor growth in vivo were evaluated using human triple-negative breast xenograft models. RESULTS The highly selective compound BAY 1816032 showed long target residence time and induced chromosome mis-segregation upon combination with low concentrations of paclitaxel. It was synergistic or additive in combination with paclitaxel or docetaxel, as well as with ATR or PARP inhibitors in cellular assays. Tumor xenograft studies demonstrated a strong and statistically significant reduction of tumor size and excellent tolerability upon combination of BAY 1816032 with paclitaxel or olaparib as compared with the respective monotherapies. CONCLUSIONS Our findings suggest clinical proof-of-concept studies evaluating BAY 1816032 in combination with taxanes or PARP inhibitors to enhance their efficacy and potentially overcome resistance.
Collapse
Affiliation(s)
| | | | | | | | | | | | - Hans Briem
- Bayer AG, Muellerstrasse Berlin, Germany
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
5
|
Heroven C, Georgi V, Ganotra GK, Brennan P, Wolfreys F, Wade RC, Fernández-Montalván AE, Chaikuad A, Knapp S. Halogen-Aromatic π Interactions Modulate Inhibitor Residence Times. Angew Chem Int Ed Engl 2018; 57:7220-7224. [PMID: 29601130 PMCID: PMC7615044 DOI: 10.1002/anie.201801666] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Revised: 03/25/2018] [Indexed: 11/06/2022]
Abstract
Prolonged drug residence times may result in longer-lasting drug efficacy, improved pharmacodynamic properties, and "kinetic selectivity" over off-targets with high drug dissociation rates. However, few strategies have been elaborated to rationally modulate drug residence time and thereby to integrate this key property into the drug development process. Herein, we show that the interaction between a halogen moiety on an inhibitor and an aromatic residue in the target protein can significantly increase inhibitor residence time. By using the interaction of the serine/threonine kinase haspin with 5-iodotubercidin (5-iTU) derivatives as a model for an archetypal active-state (type I) kinase-inhibitor binding mode, we demonstrate that inhibitor residence times markedly increase with the size and polarizability of the halogen atom. The halogen-aromatic π interactions in the haspin-inhibitor complexes were characterized by means of kinetic, thermodynamic, and structural measurements along with binding-energy calculations.
Collapse
Affiliation(s)
- Christina Heroven
- Nuffield Department of Clinical Medicine, Structural Genomics Consortium, University of Oxford, Oxford, OX3 7DQ (UK)
| | - Victoria Georgi
- Bayer AG, Drug Discovery Pharmaceuticals, Lead Discovery Berlin 13353 Berlin (Germany)
| | - Gaurav K. Ganotra
- Molecular and Cellular Modeling Group Heidelberg Institute for Theoretical Studies (HITS) 69118 Heidelberg (Germany)
- Heidelberg Graduate School of Mathematical and Computational Methods for the Sciences Heidelberg University, 69120 Heidelberg (Germany)
| | - Paul Brennan
- Nuffield Department of Clinical Medicine, Structural Genomics Consortium, University of Oxford, Oxford, OX3 7DQ (UK)
- Target Discovery Institute, Nuffield Department of Clinical Medicine University of Oxford, Oxford, OX3 7FZ (UK)
| | - Finn Wolfreys
- Nuffield Department of Clinical Medicine, Structural Genomics Consortium, University of Oxford, Oxford, OX3 7DQ (UK)
- Target Discovery Institute, Nuffield Department of Clinical Medicine University of Oxford, Oxford, OX3 7FZ (UK)
| | - Rebecca C. Wade
- Molecular and Cellular Modeling Group Heidelberg Institute for Theoretical Studies (HITS) 69118 Heidelberg (Germany)
- Zentrum für Molekulare Biologie der Universität Heidelberg DKFZ-ZMBH Alliance, Heidelberg University, 69120 Heidelberg (Germany)
- Interdisciplinary Center for Scientific Computing Heidelberg University, 69120 Heidelberg (Germany)
| | | | - Apirat Chaikuad
- Nuffield Department of Clinical Medicine, Structural Genomics Consortium, University of Oxford, Oxford, OX3 7DQ (UK)
- Buchmann Institute for Molecular Life Sciences Johann Wolfgang Goethe-University, 60438 Frankfurt am Main (Germany)
- Institute for Pharmaceutical Chemistry, Johann Wolfgang Goethe-University, 60438 Frankfurt am Main (Germany)
| | - Stefan Knapp
- Nuffield Department of Clinical Medicine, Structural Genomics Consortium, University of Oxford, Oxford, OX3 7DQ (UK)
- Buchmann Institute for Molecular Life Sciences Johann Wolfgang Goethe-University, 60438 Frankfurt am Main (Germany)
- Institute for Pharmaceutical Chemistry, Johann Wolfgang Goethe-University, 60438 Frankfurt am Main (Germany)
- German Cancer Network (DKTK), Frankfurt/Mainz site 60438 Frankfurt am Main (Germany)
| |
Collapse
|
6
|
Heroven C, Georgi V, Ganotra GK, Brennan P, Wolfreys F, Wade RC, Fernández-Montalván AE, Chaikuad A, Knapp S. Halogenaromatische π-Wechselwirkungen modulieren die Verweilzeit von Inhibitoren. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201801666] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Christina Heroven
- Nuffield Department of Clinical Medicine; Structural Genomics Consortium; University of Oxford; Oxford OX3 7DQ Großbritannien
| | - Victoria Georgi
- Bayer AG; Drug Discovery; Pharmaceuticals; Lead Discovery Berlin; 13353 Berlin Deutschland
| | - Gaurav K. Ganotra
- Molecular and Cellular Modeling Group; Heidelberg Institut für Theoretische Studien (HITS); 69118 Heidelberg Deutschland
- Heidelberg Graduate School of Mathematical and Computational Methods for the Sciences; Universität Heidelberg; 69118 Heidelberg Deutschland
| | - Paul Brennan
- Nuffield Department of Clinical Medicine; Structural Genomics Consortium; University of Oxford; Oxford OX3 7DQ Großbritannien
- Target Discovery Institute; Nuffield Department of Clinical Medicine; University of Oxford; Oxford OX3 7FZ Großbritannien
| | - Finn Wolfreys
- Nuffield Department of Clinical Medicine; Structural Genomics Consortium; University of Oxford; Oxford OX3 7DQ Großbritannien
- Target Discovery Institute; Nuffield Department of Clinical Medicine; University of Oxford; Oxford OX3 7FZ Großbritannien
| | - Rebecca C. Wade
- Molecular and Cellular Modeling Group; Heidelberg Institut für Theoretische Studien (HITS); 69118 Heidelberg Deutschland
- Zentrum für Molekulare Biologie der Universität Heidelberg; DKFZ-ZMBH Allianz; Universität Heidelberg; 69120 Heidelberg Deutschland
- Interdisziplinäre Zentrum für Wissenschaftliches Rechnen (IWR); Universität Heidelberg; 69120 Heidelberg Deutschland
| | | | - Apirat Chaikuad
- Nuffield Department of Clinical Medicine; Structural Genomics Consortium; University of Oxford; Oxford OX3 7DQ Großbritannien
- Buchmann Institute for Molecular Life Sciences; Johann Wolfgang Goethe-Universität; 60438 Frankfurt am Main Deutschland
- Institut für Pharmazeutische Chemie; Johann Wolfgang Goethe-Universität; 60438 Frankfurt am Main Deutschland
| | - Stefan Knapp
- Nuffield Department of Clinical Medicine; Structural Genomics Consortium; University of Oxford; Oxford OX3 7DQ Großbritannien
- Buchmann Institute for Molecular Life Sciences; Johann Wolfgang Goethe-Universität; 60438 Frankfurt am Main Deutschland
- Institut für Pharmazeutische Chemie; Johann Wolfgang Goethe-Universität; 60438 Frankfurt am Main Deutschland
- Deutsches Konsortium für Translationale Krebsforschung (DKTK); Frankfurt/Mainz; 60438 Frankfurt am Main Deutschland
| |
Collapse
|
7
|
Koo SJ, Fernández-Montalván AE, Badock V, Ott CJ, Holton SJ, von Ahsen O, Toedling J, Vittori S, Bradner JE, Gorjánácz M. ATAD2 is an epigenetic reader of newly synthesized histone marks during DNA replication. Oncotarget 2018; 7:70323-70335. [PMID: 27612420 PMCID: PMC5342555 DOI: 10.18632/oncotarget.11855] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Accepted: 08/21/2016] [Indexed: 02/02/2023] Open
Abstract
ATAD2 (ATPase family AAA domain-containing protein 2) is a chromatin regulator harboring an AAA+ ATPase domain and a bromodomain, previously proposed to function as an oncogenic transcription co-factor. Here we suggest that ATAD2 is also required for DNA replication. ATAD2 is co-expressed with genes involved in DNA replication in various cancer types and predominantly expressed in S phase cells where it localized on nascent chromatin (replication sites). Our extensive biochemical and cellular analyses revealed that ATAD2 is recruited to replication sites through a direct interaction with di-acetylated histone H4 at K5 and K12, indicative of newly synthesized histones during replication-coupled chromatin reassembly. Similar to ATAD2-depletion, ectopic expression of ATAD2 mutants that are deficient in binding to these di-acetylation marks resulted in reduced DNA replication and impaired loading of PCNA onto chromatin, suggesting relevance of ATAD2 in DNA replication. Taken together, our data show a novel function of ATAD2 in cancer and for the first time identify a reader of newly synthesized histone di-acetylation-marks during replication.
Collapse
Affiliation(s)
| | | | | | - Christopher J Ott
- Center for the Science of Therapeutics, Broad Institute, Cambridge, MA, USA.,Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA.,Department of Medicine, Harvard Medical School, Boston, MA, USA
| | | | | | | | - Sarah Vittori
- Center for the Science of Therapeutics, Broad Institute, Cambridge, MA, USA.,Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - James E Bradner
- Center for the Science of Therapeutics, Broad Institute, Cambridge, MA, USA.,Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA.,Department of Medicine, Harvard Medical School, Boston, MA, USA.,Present address: Novartis Institute for BioMedical Research, Cambridge, MA, USA
| | | |
Collapse
|
8
|
Fernández-Montalván AE, Berger M, Kuropka B, Koo SJ, Badock V, Weiske J, Puetter V, Holton SJ, Stöckigt D, ter Laak A, Centrella PA, Clark MA, Dumelin CE, Sigel EA, Soutter HH, Troast DM, Zhang Y, Cuozzo JW, Keefe AD, Roche D, Rodeschini V, Chaikuad A, Díaz-Sáez L, Bennett JM, Fedorov O, Huber KVM, Hübner J, Weinmann H, Hartung IV, Gorjánácz M. Isoform-Selective ATAD2 Chemical Probe with Novel Chemical Structure and Unusual Mode of Action. ACS Chem Biol 2017; 12:2730-2736. [PMID: 29043777 PMCID: PMC6218015 DOI: 10.1021/acschembio.7b00708] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
![]()
ATAD2
(ANCCA) is an epigenetic regulator and transcriptional cofactor,
whose overexpression has been linked to the progress of various cancer
types. Here, we report a DNA-encoded library screen leading to the
discovery of BAY-850, a potent and isoform selective inhibitor that
specifically induces ATAD2 bromodomain dimerization and prevents interactions
with acetylated histones in vitro, as well as with
chromatin in cells. These features qualify BAY-850 as a chemical probe
to explore ATAD2 biology.
Collapse
Affiliation(s)
| | - Markus Berger
- Bayer AG, Pharmaceuticals, Drug Discovery, Berlin, Germany
| | - Benno Kuropka
- Bayer AG, Pharmaceuticals, Drug Discovery, Berlin, Germany
| | - Seong Joo Koo
- Bayer AG, Pharmaceuticals, Drug Discovery, Berlin, Germany
| | - Volker Badock
- Bayer AG, Pharmaceuticals, Drug Discovery, Berlin, Germany
| | - Joerg Weiske
- Bayer AG, Pharmaceuticals, Drug Discovery, Berlin, Germany
| | - Vera Puetter
- Bayer AG, Pharmaceuticals, Drug Discovery, Berlin, Germany
| | | | | | | | | | | | | | - Eric A. Sigel
- X-Chem Pharmaceuticals, Waltham, Massachusetts United States
| | | | - Dawn M. Troast
- X-Chem Pharmaceuticals, Waltham, Massachusetts United States
| | - Ying Zhang
- X-Chem Pharmaceuticals, Waltham, Massachusetts United States
| | - John W. Cuozzo
- X-Chem Pharmaceuticals, Waltham, Massachusetts United States
| | | | | | | | - Apirat Chaikuad
- Structural Genomics Consortium, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
- Target Discovery Institute, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Laura Díaz-Sáez
- Structural Genomics Consortium, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
- Target Discovery Institute, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - James M. Bennett
- Structural Genomics Consortium, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
- Target Discovery Institute, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Oleg Fedorov
- Structural Genomics Consortium, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
- Target Discovery Institute, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Kilian V. M. Huber
- Structural Genomics Consortium, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
- Target Discovery Institute, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Jan Hübner
- Bayer AG, Pharmaceuticals, Drug Discovery, Berlin, Germany
| | | | | | | |
Collapse
|
9
|
Fernández-Montalván AE, Berger M, Kuropka B, Koo SJ, Badock V, Weiske J, Holton SJ, Chaikuad A, Díaz-Sáez L, Bennett J, Federov O, Huber K, Centrella P, Clark MA, Dumelin CE, Sigel EA, Soutter HS, Troast DM, Zhang Y, Cuozzo JW, Keefe AD, Roche D, Rodeschini V, Hübner J, Weinmann H, Hartung IV, Gorjanacz M. Abstract 5084: Potent and isoform-selective ATAD2 bromodomain inhibitor with unprecedented chemical structure and mode of action. Cancer Res 2017. [DOI: 10.1158/1538-7445.am2017-5084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
ATAD2 (ATPase family AAA-domain containing protein 2, also called ANCCA) is an epigenetic regulator that binds to chromatin through its bromodomain (BD), a motif specialized for acetyl-lysine recognition. ATAD2 directly associates with multiple transcription factors such as ERα, AR, E2F, and Myc; hence, ATAD2 has been proposed to act as a co-factor for oncogenic transcription factors. Furthermore, we have recently reported a novel role for ATAD2 during DNA replication, uncovering interactions between ATAD2 and histone acetylation marks on newly synthesized histone H4. High expression of ATAD2 strongly correlates with poor patient prognosis in multiple tumor types, including gastric, endometrial, hepatocellular, ovarian, breast and lung cancers. However, the exact function of ATAD2 in these tumor types remains unclear. A more thorough validation of ATAD2 as a therapeutic target is hampered by the lack of isoform-selective, potent and cellularly active ATAD2 inhibitors. A systematic assessment of crystal structures of BD-containing protein family predicted that development of selective inhibitors of ATAD2 would be challenging. In line with this prediction, only limited progress in developing lead compounds targeting ATAD2 has been reported so far. A few notable exceptions relied on fragments as starting points, however, their weak potency, insufficient selectivity against other BDs, permeability limitations or modest cellular activity have curbed their further development towards drug candidates. Here we embarked on a novel strategy to identify ATAD2 inhibitors: 11 different DNA-encoded libraries adding up to 67 billion unique encoded compounds were combined and incubated with ATAD2 BD followed by two rounds of affinity-mediated selection. This approach provided with several series of binders, for which specific target engagement of their SMOL moiety upon off-DNA synthesis was confirmed in biochemical and biophysical assays. Several rounds of potency optimization led to the identification of BAY-850, a highly potent and ATAD2 (isoform A) mono-selective inhibitor, which holds an amine substituted 3-(2-furyl)benzamide core. This compound shows - as revealed by size exclusion chromatography and native mass spectrometry - a novel mode of action for a BD inhibitor based on specific target dimerization. In a cellular fluorescence recovery after photobleaching (FRAP) assay BAY-850 displaced wild-type ATAD2 from the chromatin to the same extent as the genetic mutagenesis of ATAD2 BD. In contrast, chemically very similar inactive control compounds showed no major effects on ATAD2 association with the chromatin. These results qualify BAY-850 as the first biologically active ATAD2 isoform A-specific chemical probe, which will enable further elucidation of the cancer biology of this intriguing protein.
Citation Format: Amaury E. Fernández-Montalván, Markus Berger, Benno Kuropka, Seong Joo Koo, Volker Badock, Joerg Weiske, Simon J. Holton, Apirat Chaikuad, Laura Díaz-Sáez, James Bennett, Oleg Federov, Kilian Huber, Paolo Centrella, Matthew A. Clark, Christoph E. Dumelin, Eric A. Sigel, Holly S. Soutter, Dawn M. Troast, Ying Zhang, John W. Cuozzo, Anthony D. Keefe, Didier Roche, Vincent Rodeschini, Jan Hübner, Hilmar Weinmann, Ingo V. Hartung, Matyas Gorjanacz. Potent and isoform-selective ATAD2 bromodomain inhibitor with unprecedented chemical structure and mode of action [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2017; 2017 Apr 1-5; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2017;77(13 Suppl):Abstract nr 5084. doi:10.1158/1538-7445.AM2017-5084
Collapse
Affiliation(s)
| | | | | | | | | | | | | | | | | | - James Bennett
- 2Structural Genomics Consortium, Oxford, United Kingdom
| | - Oleg Federov
- 2Structural Genomics Consortium, Oxford, United Kingdom
| | - Kilian Huber
- 2Structural Genomics Consortium, Oxford, United Kingdom
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
10
|
Bouche L, Christ CD, Siegel S, Tallant C, Fernández-Montalván AE, Huber KV, Pütter V, Müller S, Fedorov O, Laak AT, Sugawara T, Stöckigt D, Meier J, Holton SJ, Hartung IV, Haendler B. Abstract 980: BAY-299, a novel chemical probe for in-depth analysis of the function of the bromodomain proteins BRPF2 and TAF1. Cancer Res 2017. [DOI: 10.1158/1538-7445.am2017-980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
With the exception of the bromodomain and extra-terminal domain BET subgroup, little is known about the role of bromodomain (BD) containing proteins in cancer so that there is a dire need for chemical probes addressing other family members. The bromodomain and PHD-finger (BRPF) family encompasses three paralogs, BRPF1, BRPF2 and BRPF3, which are all found in histone acetyltransferase (HAT) complexes. BRPF2 is a scaffold protein and its knock-out leads to embryonic lethality at E15.5, potentially due to its role in embryonic stem cell differentiation. Here we present the structure-activity relationship (SAR) and characterization of the first selective BRPF2 chemical probe BAY-299, with additionnal strong activity at TAF1, a major component of the basal transcription initiation complex TFIID. BAY-299 shows in vitro activity for BRPF2 (IC50 = 67 nM) and TAF1 second bromodomain (BD2; IC50 = 8 nM) in the TR-FRET assay, as well as in the cellular NanoBRET assay [IC50 (BRPF2) = 575 nM; IC50 (TAF1 BD2) = 825 nM]. To the best of our knowledge BAY-299 is the only disclosed inhibitor showing BRPF2 selectivity over its two paralogues BRPF1 and BRPF3. It belongs to the 1,3-benzimidazolone scaffold and bears a novel substitution which is responsible for its high BRPF2 selectivity and also for its inactivity on BET BDs. The dual inhibitory properties of BAY-299 against BRPF2 and TAF1 make it an ideal research tool for further investigation of these two proteins in physiological and pathological processes.
Citation Format: Lea Bouche, Clara D. Christ, Stephan Siegel, Cynthia Tallant, Amaury E. Fernández-Montalván, Kilian V. Huber, Verra Pütter, Susanne Müller, Oleg Fedorov, Antonius ter Laak, Tatsuo Sugawara, Detlef Stöckigt, Julia Meier, Simon J. Holton, Ingo V. Hartung, Bernard Haendler. BAY-299, a novel chemical probe for in-depth analysis of the function of the bromodomain proteins BRPF2 and TAF1 [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2017; 2017 Apr 1-5; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2017;77(13 Suppl):Abstract nr 980. doi:10.1158/1538-7445.AM2017-980
Collapse
Affiliation(s)
| | | | | | | | | | | | | | | | - Oleg Fedorov
- 2Structural Genomics Consortium, Oxford, United Kingdom
| | | | | | | | | | | | | | | |
Collapse
|
11
|
Fernández-Montalván AE, Georgi V, Vasta J, Glaeske S, Puetter V, Robers MB, Moenning U, Sturz A, Lefranc J, Ziegelbauer K, Brands M, Stegmann C, Scott WJ, Liu N. Abstract 160: High target binding affinity with long lasting cellular target engagement and high dose intermittent schedule of PI3K inhibitor copanlisib contribute to the potent anti-tumor activity and good safety profile. Cancer Res 2017. [DOI: 10.1158/1538-7445.am2017-160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Introduction: Several generations of PI3K inhibitors have been tested in clinic. However, thus far, clinical activity has been moderate. Different from other oral PI3K inhibitors dosed continuously, copanlisib (BAY 80-6946) is an intravenous PI3K inhibitor given intermittently to patients. Copanlisib dosed once weekly demonstrated clinical benefit with an improved safety profile, and therefore challenges the concept of default continuous dosing of PI3K inhibitors. However, it is still unclear if this concept can be generalized and whether ‘micropharmacokinetic parameters’ also contributed to the potent anti-tumor profile of copanlisib. Here, we report the characterization of binding kinetics for copanlisib, as well as the functional consequence in vivo.
Methods: A set of PI3K inhibitors were characterized in 1) a kinetic probe competition assay (kPCA); 2) a cellular nanoBRET target engagement assay; 3) a cellular washout study with the assessment on pathway engagement; and 4) in vivo pharmacokinetics analysis.
Results: Copanlisib showed nearly diffusion-controlled on- and relatively slow off-rates with kon = 3.45E+7 [M-1*s-1] and koff = 1.67E-3 [s-1] to PI3Kα. Consequently, it exhibited very high affinity to PI3Kα ( Ki ePCA = 9.31E-11[M] and KD kPCA = 4.77E-11 [M]). In a cellular nanoBRET target engagement assay, the apparent half-life (t1/2) of ca. 2 hours greatly surpassed the 6.9 min measured using kPCA. The high affinity to PI3Kα also translated into potent cellular pathway engagement demonstrated by inhibition of p-AKT and p-PRAS40 in the PIK3CAmut KPL4 cell line. In a cellular washout study, p-AKT and p-PRAS40 were assessed till 168 h after incubation with copanlisib for 1 h followed by a washout step. A dose- and time-dependent pathway engagement was observed even at 72 h post washout. This result indicated that in cells, copanlisib engages PI3Kα for an extremely long time, likely due to rebinding effects facilitated by the fast equilibration kinetics of the compound and its micropharmacokinetic properties. Interestingly, in vivo, BAY 80-6946 levels were approximately 100-fold higher in the tumor than in plasma at 48 hours and drug clearance from the tumor occurred more slowly than from plasma. This high and prolonged tumor exposure might be explained, at least in part, by the high expression of PI3Kα and long lasting target occupancy of copanlisib in tumors.
Conclusion: Copanlisib demonstrated high affinity to PI3Kα with protracted target engagement at cellular and in vivo levels. This ‘micropharmacokinetic feature’ not only supports intermittent dosing but likely also explains the high exposure in tumors vs plasma, potent anti-tumor activity and good safety profiles.
Citation Format: Amaury E. Fernández-Montalván, Victoria Georgi, James Vasta, Sarah Glaeske, Vera Puetter, Matthew B. Robers, Ursula Moenning, Andrea Sturz, Julien Lefranc, Karl Ziegelbauer, Michael Brands, Christian Stegmann, William J. Scott, Ningshu Liu. High target binding affinity with long lasting cellular target engagement and high dose intermittent schedule of PI3K inhibitor copanlisib contribute to the potent anti-tumor activity and good safety profile [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2017; 2017 Apr 1-5; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2017;77(13 Suppl):Abstract nr 160. doi:10.1158/1538-7445.AM2017-160
Collapse
|
12
|
Siemeister G, Mengel A, Bone W, Schröder J, Zitzmann-Kolbe S, Briem H, Fernández-Montalván AE, Holton S, Mönning U, Ahsen OV, Johanssen S, Cleve A, Hitchcock M, Meyer K, Nussbaum FV, Brands M, Mumberg D, Ziegelbauer K. Abstract 287: BAY 1816032, a novel BUB1 kinase inhibitor with potent antitumor activity. Cancer Res 2017. [DOI: 10.1158/1538-7445.am2017-287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
The spindle assembly checkpoint represents a highly conserved surveillance mechanism which safeguards correct chromosome segregation by delaying anaphase onset until all chromosomes are properly bi-oriented on the spindle apparatus. Non-catalytic functions of the mitotic kinase BUB1 (budding uninhibited by benzimidazoles 1) were reported to be essential for spindle assembly checkpoint activation. In contrast, the catalytic function of BUB1 plays a minor role in spindle assembly checkpoint activation but is required for chromosome arm resolution and positioning of the chromosomal passenger complex for resolution of spindle attachment errors. Here, we disclose for the first time the structure and functional characterization of a novel, first-in-class Bub1 kinase inhibitor. Medicinal chemistry efforts resulted in BAY 1816032 featuring high potency, long target residence time and good oral bioavailablity. It inhibits BUB1 enzymatic activity with an IC50 of 7 nanomol/L, shows slow dissociation kinetics resulting in a long target residence time of 87 min, and an excellent selectivity on a panel of 395 kinases. Mechanistically BAY 1816032 abrogated nocodazole-induced Thr-120 phosphorylation of the major BUB1 target protein histone H2A in HeLa cells with an IC50 of 29 nanomol/L, induced lagging chromosomes and mitotic delay. Persistent lagging chromosomes and missegregation were observed upon combination with low concentrations of paclitaxel. Single agent BAY 1816032 inhibited proliferation of various tumor cell lines with a median IC50 of 1.4 micromol/L and demonstrated synergy or additivity with paclitaxel or docetaxel in almost all cell lines evaluated (minimal combination index 0.3). In tumor xenograft studies BAY 1816032 only marginally inhibited tumor growth as single agent upon oral administration, however, upon combination with paclitaxel or docetaxel a strong and statistically significant reduction of tumor size as compared to the respective monotherapy was observed. Intratumoral levels of phospho-Thr120 H2A were found to be strongly reduced, and no hints on drug-drug interactions were found. In line with the good tolerability in xenograft studies, no relevant findings from non-GLP 2 weeks toxicological studies in rat and dog were reported. Our findings validate the innovative concept of interference with mitotic checkpoints and justify clinical proof of concept studies evaluating BUB1 inhibitor BAY 1816032 in combination with taxanes in order to enhance their efficacy and potentially overcome resistance.
Citation Format: Gerhard Siemeister, Anne Mengel, Wilhelm Bone, Jens Schröder, Sabine Zitzmann-Kolbe, Hans Briem, Amaury E. Fernández-Montalván, Simon Holton, Ursula Mönning, Oliver von Ahsen, Sandra Johanssen, Arwed Cleve, Marion Hitchcock, Kirstin Meyer, Franz von Nussbaum, Michael Brands, Dominik Mumberg, Karl Ziegelbauer. BAY 1816032, a novel BUB1 kinase inhibitor with potent antitumor activity [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2017; 2017 Apr 1-5; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2017;77(13 Suppl):Abstract nr 287. doi:10.1158/1538-7445.AM2017-287
Collapse
|
13
|
Bouché L, Christ CD, Siegel S, Fernández-Montalván AE, Holton SJ, Fedorov O, Ter Laak A, Sugawara T, Stöckigt D, Tallant C, Bennett J, Monteiro O, Díaz-Sáez L, Siejka P, Meier J, Pütter V, Weiske J, Müller S, Huber KVM, Hartung IV, Haendler B. Benzoisoquinolinediones as Potent and Selective Inhibitors of BRPF2 and TAF1/TAF1L Bromodomains. J Med Chem 2017; 60:4002-4022. [PMID: 28402630 PMCID: PMC5443610 DOI: 10.1021/acs.jmedchem.7b00306] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
![]()
Bromodomains
(BD) are readers of lysine acetylation marks present
in numerous proteins associated with chromatin. Here we describe a
dual inhibitor of the bromodomain and PHD finger (BRPF) family member
BRPF2 and the TATA box binding protein-associated factors TAF1 and
TAF1L. These proteins are found in large chromatin complexes and play
important roles in transcription regulation. The substituted benzoisoquinolinedione
series was identified by high-throughput screening, and subsequent
structure–activity relationship optimization allowed generation
of low nanomolar BRPF2 BD inhibitors with strong selectivity against
BRPF1 and BRPF3 BDs. In addition, a strong inhibition of TAF1/TAF1L
BD2 was measured for most derivatives. The best compound of the series
was BAY-299, which is a very potent, dual inhibitor with an IC50 of 67 nM for BRPF2 BD, 8 nM for TAF1 BD2, and 106 nM for
TAF1L BD2. Importantly, no activity was measured for BRD4 BDs. Furthermore,
cellular activity was evidenced using a BRPF2– or TAF1–histone
H3.3 or H4 interaction assay.
Collapse
Affiliation(s)
- Léa Bouché
- Drug Discovery, Bayer AG , Müllerstrasse 178, 13353 Berlin, Germany
| | - Clara D Christ
- Drug Discovery, Bayer AG , Müllerstrasse 178, 13353 Berlin, Germany
| | - Stephan Siegel
- Drug Discovery, Bayer AG , Müllerstrasse 178, 13353 Berlin, Germany
| | | | - Simon J Holton
- Drug Discovery, Bayer AG , Müllerstrasse 178, 13353 Berlin, Germany
| | - Oleg Fedorov
- Structural Genomics Consortium, Nuffield Department of Clinical Medicine, University of Oxford , Roosevelt Drive, Oxford OX3 7DQ, U.K.,Target Discovery Institute, Nuffield Department of Clinical Medicine, University of Oxford , Roosevelt Drive, Oxford OX3 7FZ, U.K
| | | | - Tatsuo Sugawara
- Drug Discovery, Bayer AG , Müllerstrasse 178, 13353 Berlin, Germany
| | - Detlef Stöckigt
- Drug Discovery, Bayer AG , Müllerstrasse 178, 13353 Berlin, Germany
| | - Cynthia Tallant
- Structural Genomics Consortium, Nuffield Department of Clinical Medicine, University of Oxford , Roosevelt Drive, Oxford OX3 7DQ, U.K.,Target Discovery Institute, Nuffield Department of Clinical Medicine, University of Oxford , Roosevelt Drive, Oxford OX3 7FZ, U.K
| | - James Bennett
- Structural Genomics Consortium, Nuffield Department of Clinical Medicine, University of Oxford , Roosevelt Drive, Oxford OX3 7DQ, U.K.,Target Discovery Institute, Nuffield Department of Clinical Medicine, University of Oxford , Roosevelt Drive, Oxford OX3 7FZ, U.K
| | - Octovia Monteiro
- Structural Genomics Consortium, Nuffield Department of Clinical Medicine, University of Oxford , Roosevelt Drive, Oxford OX3 7DQ, U.K.,Target Discovery Institute, Nuffield Department of Clinical Medicine, University of Oxford , Roosevelt Drive, Oxford OX3 7FZ, U.K
| | - Laura Díaz-Sáez
- Structural Genomics Consortium, Nuffield Department of Clinical Medicine, University of Oxford , Roosevelt Drive, Oxford OX3 7DQ, U.K.,Target Discovery Institute, Nuffield Department of Clinical Medicine, University of Oxford , Roosevelt Drive, Oxford OX3 7FZ, U.K
| | - Paulina Siejka
- Structural Genomics Consortium, Nuffield Department of Clinical Medicine, University of Oxford , Roosevelt Drive, Oxford OX3 7DQ, U.K.,Target Discovery Institute, Nuffield Department of Clinical Medicine, University of Oxford , Roosevelt Drive, Oxford OX3 7FZ, U.K
| | - Julia Meier
- Structural Genomics Consortium, Nuffield Department of Clinical Medicine, University of Oxford , Roosevelt Drive, Oxford OX3 7DQ, U.K
| | - Vera Pütter
- Drug Discovery, Bayer AG , Müllerstrasse 178, 13353 Berlin, Germany
| | - Jörg Weiske
- Drug Discovery, Bayer AG , Müllerstrasse 178, 13353 Berlin, Germany
| | - Susanne Müller
- Structural Genomics Consortium, Nuffield Department of Clinical Medicine, University of Oxford , Roosevelt Drive, Oxford OX3 7DQ, U.K.,Target Discovery Institute, Nuffield Department of Clinical Medicine, University of Oxford , Roosevelt Drive, Oxford OX3 7FZ, U.K
| | - Kilian V M Huber
- Structural Genomics Consortium, Nuffield Department of Clinical Medicine, University of Oxford , Roosevelt Drive, Oxford OX3 7DQ, U.K.,Target Discovery Institute, Nuffield Department of Clinical Medicine, University of Oxford , Roosevelt Drive, Oxford OX3 7FZ, U.K
| | - Ingo V Hartung
- Drug Discovery, Bayer AG , Müllerstrasse 178, 13353 Berlin, Germany
| | - Bernard Haendler
- Drug Discovery, Bayer AG , Müllerstrasse 178, 13353 Berlin, Germany
| |
Collapse
|
14
|
Nederpelt I, Georgi V, Schiele F, Nowak-Reppel K, Fernández-Montalván AE, IJzerman AP, Heitman LH. Characterization of 12 GnRH peptide agonists - a kinetic perspective. Br J Pharmacol 2015; 173:128-41. [PMID: 26398856 DOI: 10.1111/bph.13342] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2014] [Revised: 09/04/2015] [Accepted: 09/09/2015] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND AND PURPOSE Drug-target residence time is an important, yet often overlooked, parameter in drug discovery. Multiple studies have proposed an increased residence time to be beneficial for improved drug efficacy and/or longer duration of action. Currently, there are many drugs on the market targeting the gonadotropin-releasing hormone (GnRH) receptor for the treatment of hormone-dependent diseases. Surprisingly, the kinetic receptor-binding parameters of these analogues have not yet been reported. Therefore, this project focused on determining the receptor-binding kinetics of 12 GnRH peptide agonists, including many marketed drugs. EXPERIMENTAL APPROACH A novel radioligand-binding competition association assay was developed and optimized for the human GnRH receptor with the use of a radiolabelled peptide agonist, [(125) I]-triptorelin. In addition to radioligand-binding studies, a homogeneous time-resolved FRET Tag-lite™ method was developed as an alternative assay for the same purpose. KEY RESULTS Two novel competition association assays were successfully developed and applied to determine the kinetic receptor-binding characteristics of 12 high-affinity GnRH peptide agonists. Results obtained from both methods were highly correlated. Interestingly, the binding kinetics of the peptide agonists were more divergent than their affinities with residence times ranging from 5.6 min (goserelin) to 125 min (deslorelin). CONCLUSIONS AND IMPLICATIONS Our research provides new insights by incorporating kinetic, next to equilibrium, binding parameters in current research and development that can potentially improve future drug discovery targeting the GnRH receptor.
Collapse
Affiliation(s)
- Indira Nederpelt
- Division of Medicinal Chemistry, Leiden Academic Centre for Drug Research (LACDR), Leiden University, Leiden, The Netherlands
| | - Victoria Georgi
- Global Drug Discovery, Lead Discovery Berlin, Bayer Healthcare Pharmaceuticals, Berlin, Germany
| | - Felix Schiele
- Global Drug Discovery, Lead Discovery Berlin, Bayer Healthcare Pharmaceuticals, Berlin, Germany
| | - Katrin Nowak-Reppel
- Global Drug Discovery, Lead Discovery Berlin, Bayer Healthcare Pharmaceuticals, Berlin, Germany
| | | | - Adriaan P IJzerman
- Division of Medicinal Chemistry, Leiden Academic Centre for Drug Research (LACDR), Leiden University, Leiden, The Netherlands
| | - Laura H Heitman
- Division of Medicinal Chemistry, Leiden Academic Centre for Drug Research (LACDR), Leiden University, Leiden, The Netherlands
| |
Collapse
|