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Down K, Amour A, Anderson NA, Barton N, Campos S, Cannons EP, Clissold C, Convery MA, Coward JJ, Doyle K, Duempelfeld B, Edwards CD, Goldsmith MD, Krause J, Mallett DN, McGonagle GA, Patel VK, Rowedder J, Rowland P, Sharpe A, Sriskantharajah S, Thomas DA, Thomson DW, Uddin S, Hamblin JN, Hessel EM. Discovery of GSK251: A Highly Potent, Highly Selective, Orally Bioavailable Inhibitor of PI3Kδ with a Novel Binding Mode. J Med Chem 2021; 64:13780-13792. [PMID: 34510892 DOI: 10.1021/acs.jmedchem.1c01102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Optimization of a previously reported lead series of PI3Kδ inhibitors with a novel binding mode led to the identification of a clinical candidate compound 31 (GSK251). Removal of an embedded Ames-positive heteroaromatic amine by reversing a sulfonamide followed by locating an interaction with Trp760 led to a highly selective compound 9. Further optimization to avoid glutathione trapping, to enhance potency and selectivity, and to optimize an oral pharmacokinetic profile led to the discovery of compound 31 (GSK215) that had a low predicted daily dose (45 mg, b.i.d) and a rat toxicity profile suitable for further development.
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Affiliation(s)
- Kenneth Down
- Medicines Research Centre, GlaxoSmithKline R&D, Gunnels Wood Road, Stevenage SG1 2NY, U.K
| | - Augustin Amour
- Medicines Research Centre, GlaxoSmithKline R&D, Gunnels Wood Road, Stevenage SG1 2NY, U.K
| | - Niall A Anderson
- Medicines Research Centre, GlaxoSmithKline R&D, Gunnels Wood Road, Stevenage SG1 2NY, U.K
| | - Nick Barton
- Medicines Research Centre, GlaxoSmithKline R&D, Gunnels Wood Road, Stevenage SG1 2NY, U.K
| | - Sebastien Campos
- Medicines Research Centre, GlaxoSmithKline R&D, Gunnels Wood Road, Stevenage SG1 2NY, U.K
| | - Edward P Cannons
- Medicines Research Centre, GlaxoSmithKline R&D, Gunnels Wood Road, Stevenage SG1 2NY, U.K
| | - Cole Clissold
- Charles River Discovery, Chesterford Research Park, Saffron Walden CB10 1XL, U.K
| | - Maire A Convery
- Medicines Research Centre, GlaxoSmithKline R&D, Gunnels Wood Road, Stevenage SG1 2NY, U.K
| | - John J Coward
- Medicines Research Centre, GlaxoSmithKline R&D, Gunnels Wood Road, Stevenage SG1 2NY, U.K
| | - Kevin Doyle
- Charles River Discovery, Chesterford Research Park, Saffron Walden CB10 1XL, U.K
| | - Birgit Duempelfeld
- Cellzome GmbH, A GlaxoSmithKline Company, Meyerhofstraße 1, Heidelberg 69117, Germany
| | - Christopher D Edwards
- Medicines Research Centre, GlaxoSmithKline R&D, Gunnels Wood Road, Stevenage SG1 2NY, U.K
| | - Michael D Goldsmith
- Charles River Discovery, Chesterford Research Park, Saffron Walden CB10 1XL, U.K
| | - Jana Krause
- Cellzome GmbH, A GlaxoSmithKline Company, Meyerhofstraße 1, Heidelberg 69117, Germany
| | - David N Mallett
- Medicines Research Centre, GlaxoSmithKline R&D, Gunnels Wood Road, Stevenage SG1 2NY, U.K
| | - Grant A McGonagle
- Medicines Research Centre, GlaxoSmithKline R&D, Gunnels Wood Road, Stevenage SG1 2NY, U.K
| | - Vipulkumar K Patel
- Medicines Research Centre, GlaxoSmithKline R&D, Gunnels Wood Road, Stevenage SG1 2NY, U.K
| | - James Rowedder
- Medicines Research Centre, GlaxoSmithKline R&D, Gunnels Wood Road, Stevenage SG1 2NY, U.K
| | - Paul Rowland
- Medicines Research Centre, GlaxoSmithKline R&D, Gunnels Wood Road, Stevenage SG1 2NY, U.K
| | - Andrew Sharpe
- Charles River Discovery, Chesterford Research Park, Saffron Walden CB10 1XL, U.K
| | | | - Daniel A Thomas
- Medicines Research Centre, GlaxoSmithKline R&D, Gunnels Wood Road, Stevenage SG1 2NY, U.K
| | - Douglas W Thomson
- Cellzome GmbH, A GlaxoSmithKline Company, Meyerhofstraße 1, Heidelberg 69117, Germany
| | - Sorif Uddin
- Medicines Research Centre, GlaxoSmithKline R&D, Gunnels Wood Road, Stevenage SG1 2NY, U.K
| | - J Nicole Hamblin
- Medicines Research Centre, GlaxoSmithKline R&D, Gunnels Wood Road, Stevenage SG1 2NY, U.K
| | - Edith M Hessel
- Medicines Research Centre, GlaxoSmithKline R&D, Gunnels Wood Road, Stevenage SG1 2NY, U.K
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Liddle J, Pearce AC, Arico-Muendel C, Belyanskaya S, Brewster A, Brown M, Chung CW, Denis A, Dodic N, Dossang A, Eddershaw P, Klimaszewska D, Haq I, Holmes DS, Jagger A, Jakhria T, Jigorel E, Lind K, Messer J, Neu M, Olszewski A, Ronzoni R, Rowedder J, Rüdiger M, Skinner S, Smith KJ, Trottet L, Uings I, Zhu Z, Irving JA, Lomas DA. The development of highly potent and selective small molecule correctors of Z α 1-antitrypsin misfolding. Bioorg Med Chem Lett 2021; 41:127973. [PMID: 33753261 DOI: 10.1016/j.bmcl.2021.127973] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 03/05/2021] [Accepted: 03/13/2021] [Indexed: 11/21/2022]
Abstract
α1-antitrypsin deficiency is characterised by the misfolding and intracellular polymerisation of mutant α1-antitrypsin protein within the endoplasmic reticulum (ER) of hepatocytes. Small molecules that bind and stabilise Z α1-antitrypsin were identified via a DNA-encoded library screen. A subsequent structure based optimisation led to a series of highly potent, selective and cellular active α1-antitrypsin correctors.
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Affiliation(s)
- John Liddle
- GlaxoSmithKline, Gunnels Wood Road, Stevenage, Herts SG1 2NY, United Kingdom
| | - Andrew C Pearce
- GlaxoSmithKline, Gunnels Wood Road, Stevenage, Herts SG1 2NY, United Kingdom
| | | | | | - Andrew Brewster
- GlaxoSmithKline, Gunnels Wood Road, Stevenage, Herts SG1 2NY, United Kingdom
| | - Murray Brown
- GlaxoSmithKline, Gunnels Wood Road, Stevenage, Herts SG1 2NY, United Kingdom
| | - Chun-Wa Chung
- GlaxoSmithKline, Gunnels Wood Road, Stevenage, Herts SG1 2NY, United Kingdom
| | - Alexis Denis
- GlaxoSmithKline, Avenue du Quebec, Paris 91140, France
| | - Nerina Dodic
- GlaxoSmithKline, Avenue du Quebec, Paris 91140, France
| | - Anthony Dossang
- GlaxoSmithKline, Gunnels Wood Road, Stevenage, Herts SG1 2NY, United Kingdom
| | - Peter Eddershaw
- GlaxoSmithKline, Gunnels Wood Road, Stevenage, Herts SG1 2NY, United Kingdom
| | - Diana Klimaszewska
- GlaxoSmithKline, Gunnels Wood Road, Stevenage, Herts SG1 2NY, United Kingdom
| | - Imran Haq
- UCL Respiratory, Rayne Institute, University College London, London WC1E 6JF, United Kingdom
| | - Duncan S Holmes
- GlaxoSmithKline, Gunnels Wood Road, Stevenage, Herts SG1 2NY, United Kingdom
| | - Alistair Jagger
- UCL Respiratory, Rayne Institute, University College London, London WC1E 6JF, United Kingdom
| | - Toral Jakhria
- GlaxoSmithKline, Gunnels Wood Road, Stevenage, Herts SG1 2NY, United Kingdom
| | | | - Ken Lind
- GlaxoSmithKline, Cambridge Park Drive, 6th Floor, Cambridge, MA 02140, USA
| | - Jeff Messer
- GlaxoSmithKline, Cambridge Park Drive, 6th Floor, Cambridge, MA 02140, USA
| | - Margaret Neu
- GlaxoSmithKline, Gunnels Wood Road, Stevenage, Herts SG1 2NY, United Kingdom
| | - Allison Olszewski
- GlaxoSmithKline, Cambridge Park Drive, 6th Floor, Cambridge, MA 02140, USA
| | - Riccardo Ronzoni
- UCL Respiratory, Rayne Institute, University College London, London WC1E 6JF, United Kingdom
| | - James Rowedder
- GlaxoSmithKline, Gunnels Wood Road, Stevenage, Herts SG1 2NY, United Kingdom
| | - Martin Rüdiger
- GlaxoSmithKline, Gunnels Wood Road, Stevenage, Herts SG1 2NY, United Kingdom
| | - Steve Skinner
- GlaxoSmithKline, Cambridge Park Drive, 6th Floor, Cambridge, MA 02140, USA
| | - Kathrine J Smith
- GlaxoSmithKline, Gunnels Wood Road, Stevenage, Herts SG1 2NY, United Kingdom
| | | | - Iain Uings
- GlaxoSmithKline, Gunnels Wood Road, Stevenage, Herts SG1 2NY, United Kingdom
| | - Zhengrong Zhu
- GlaxoSmithKline, Cambridge Park Drive, 6th Floor, Cambridge, MA 02140, USA
| | - James A Irving
- UCL Respiratory, Rayne Institute, University College London, London WC1E 6JF, United Kingdom
| | - David A Lomas
- UCL Respiratory, Rayne Institute, University College London, London WC1E 6JF, United Kingdom.
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Lomas DA, Irving JA, Arico‐Muendel C, Belyanskaya S, Brewster A, Brown M, Chung C, Dave H, Denis A, Dodic N, Dossang A, Eddershaw P, Klimaszewska D, Haq I, Holmes DS, Hutchinson JP, Jagger AM, Jakhria T, Jigorel E, Liddle J, Lind K, Marciniak SJ, Messer J, Neu M, Olszewski A, Ordonez A, Ronzoni R, Rowedder J, Rüdiger M, Skinner S, Smith KJ, Terry R, Trottet L, Uings I, Wilson S, Zhu Z, Pearce AC. Development of a small molecule that corrects misfolding and increases secretion of Z α 1 -antitrypsin. EMBO Mol Med 2021; 13:e13167. [PMID: 33512066 PMCID: PMC7933930 DOI: 10.15252/emmm.202013167] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 12/08/2020] [Accepted: 12/10/2020] [Indexed: 01/23/2023] Open
Abstract
Severe α1 -antitrypsin deficiency results from the Z allele (Glu342Lys) that causes the accumulation of homopolymers of mutant α1 -antitrypsin within the endoplasmic reticulum of hepatocytes in association with liver disease. We have used a DNA-encoded chemical library to undertake a high-throughput screen to identify small molecules that bind to, and stabilise Z α1 -antitrypsin. The lead compound blocks Z α1 -antitrypsin polymerisation in vitro, reduces intracellular polymerisation and increases the secretion of Z α1 -antitrypsin threefold in an iPSC model of disease. Crystallographic and biophysical analyses demonstrate that GSK716 and related molecules bind to a cryptic binding pocket, negate the local effects of the Z mutation and stabilise the bound state against progression along the polymerisation pathway. Oral dosing of transgenic mice at 100 mg/kg three times a day for 20 days increased the secretion of Z α1 -antitrypsin into the plasma by sevenfold. There was no observable clearance of hepatic inclusions with respect to controls over the same time period. This study provides proof of principle that "mutation ameliorating" small molecules can block the aberrant polymerisation that underlies Z α1 -antitrypsin deficiency.
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Affiliation(s)
- David A Lomas
- UCL RespiratoryRayne InstituteUniversity College LondonLondonUK
| | - James A Irving
- UCL RespiratoryRayne InstituteUniversity College LondonLondonUK
| | | | | | | | | | | | | | | | | | | | | | | | - Imran Haq
- UCL RespiratoryRayne InstituteUniversity College LondonLondonUK
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Henley ZA, Amour A, Barton N, Bantscheff M, Bergamini G, Bertrand SM, Convery M, Down K, Dümpelfeld B, Edwards CD, Grandi P, Gore PM, Keeling S, Livia S, Mallett D, Maxwell A, Price M, Rau C, Reinhard FBM, Rowedder J, Rowland P, Taylor JA, Thomas DA, Hessel EM, Hamblin JN. Optimization of Orally Bioavailable PI3Kδ Inhibitors and Identification of Vps34 as a Key Selectivity Target. J Med Chem 2019; 63:638-655. [DOI: 10.1021/acs.jmedchem.9b01585] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
| | | | | | - Marcus Bantscheff
- Cellzome GmbH, GlaxoSmithKline, Meyerhofstrasse 1, 69117 Heidelberg, Germany
| | - Giovanna Bergamini
- Cellzome GmbH, GlaxoSmithKline, Meyerhofstrasse 1, 69117 Heidelberg, Germany
| | | | | | | | - Birgit Dümpelfeld
- Cellzome GmbH, GlaxoSmithKline, Meyerhofstrasse 1, 69117 Heidelberg, Germany
| | | | - Paola Grandi
- Cellzome GmbH, GlaxoSmithKline, Meyerhofstrasse 1, 69117 Heidelberg, Germany
| | | | | | | | | | | | - Mark Price
- In Vitro In Vivo Translation, GlaxoSmithKline R&D, David Jack Centre, Park Road, Ware SG12 0DP, U.K
| | - Christina Rau
- Cellzome GmbH, GlaxoSmithKline, Meyerhofstrasse 1, 69117 Heidelberg, Germany
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Barton N, Convery M, Cooper AWJ, Down K, Hamblin JN, Inglis G, Peace S, Rowedder J, Rowland P, Taylor JA, Wellaway N. Discovery of Potent, Efficient, and Selective Inhibitors of Phosphoinositide 3-Kinase δ through a Deconstruction and Regrowth Approach. J Med Chem 2018; 61:11061-11073. [PMID: 30532965 DOI: 10.1021/acs.jmedchem.8b01556] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
A deconstruction of previously reported phosphoinositide 3-kinase δ (PI3Kδ) inhibitors and subsequent regrowth led to the identification of a privileged fragment for PI3Kδ, which was exploited to deliver a potent, efficient, and selective lead series with a novel binding mode observed in the PI3Kδ crystal structure.
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Affiliation(s)
- Nick Barton
- GlaxoSmithKline R&D, Medicines Research Centre , Gunnels Wood Road , SG1 2NY Stevenage , U.K
| | - Máire Convery
- GlaxoSmithKline R&D, Medicines Research Centre , Gunnels Wood Road , SG1 2NY Stevenage , U.K
| | - Anthony W J Cooper
- GlaxoSmithKline R&D, Medicines Research Centre , Gunnels Wood Road , SG1 2NY Stevenage , U.K
| | - Kenneth Down
- GlaxoSmithKline R&D, Medicines Research Centre , Gunnels Wood Road , SG1 2NY Stevenage , U.K
| | - J Nicole Hamblin
- GlaxoSmithKline R&D, Medicines Research Centre , Gunnels Wood Road , SG1 2NY Stevenage , U.K
| | - Graham Inglis
- GlaxoSmithKline R&D, Medicines Research Centre , Gunnels Wood Road , SG1 2NY Stevenage , U.K
| | - Simon Peace
- GlaxoSmithKline R&D, Medicines Research Centre , Gunnels Wood Road , SG1 2NY Stevenage , U.K
| | - James Rowedder
- GlaxoSmithKline R&D, Medicines Research Centre , Gunnels Wood Road , SG1 2NY Stevenage , U.K
| | - Paul Rowland
- GlaxoSmithKline R&D, Medicines Research Centre , Gunnels Wood Road , SG1 2NY Stevenage , U.K
| | - Jonathan A Taylor
- GlaxoSmithKline R&D, Medicines Research Centre , Gunnels Wood Road , SG1 2NY Stevenage , U.K
| | - Natalie Wellaway
- GlaxoSmithKline R&D, Medicines Research Centre , Gunnels Wood Road , SG1 2NY Stevenage , U.K
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Skinner RH, Picardo M, Gane NM, Cook ND, Morgan L, Rowedder J, Lowe PN. Direct measurement of the binding of RAS to neurofibromin using a scintillation proximity assay. Anal Biochem 1994; 223:259-65. [PMID: 7887472 DOI: 10.1006/abio.1994.1582] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Protein-protein interactions are of major importance in many cellular processes. When no enzymic activity is involved, assays for direct binding are required. One such example is the relatively weak interaction between oncogenic Ras and the GTPase-activating protein neurofibromin (NF1). The complex between the catalytic domain of NF1 and the GTP-form of oncogenic Ras protein dissociates rapidly; hence, equilibrium binding must be quantitated. Scintillation proximity assay (SPA) technology, a radioisotopic technique that requires no separation step, was used to characterize this interaction. Leu-61 Ras complexed with [3H]GTP was generated by nucleotide exchange in the presence of a GTP-regenerating system. A SPA signal was obtained when radiolabeled Ras was mixed with NF1 fused with glutathione S-transferase (GST), anti-GST, and protein A-coated SPA beads. This signal was abolished when any of the components were omitted and also by the addition of NaCl, which potently reduces the affinity of interaction between Ras and NF1. The neutralizing anti-Ras monoclonal antibody Y13-259 and the detergent n-dodecyl maltoside, a specific inhibitor of NF1 catalytic activity, both abolished the SPA signal from the NF1/Ras assay but neither affected a control SPA signal in which a [3H]GTP.GST-Ras fusion protein was bound to protein A-coated SPA beads. This technology could be readily extended to the measurement of other protein-protein interactions and could form the basis for high-throughput screens for the discovery of novel therapeutic agents.
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Affiliation(s)
- R H Skinner
- Department of Cell Biology, Wellcome Research Laboratories, Beckenham, Kent, United Kingdom
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