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Konteatis Z, Travins J, Gross S, Marjon K, Barnett A, Mandley E, Nicolay B, Nagaraja R, Chen Y, Sun Y, Liu Z, Yu J, Ye Z, Jiang F, Wei W, Fang C, Gao Y, Kalev P, Hyer ML, DeLaBarre B, Jin L, Padyana AK, Dang L, Murtie J, Biller SA, Sui Z, Marks KM. Discovery of AG-270, a First-in-Class Oral MAT2A Inhibitor for the Treatment of Tumors with Homozygous MTAP Deletion. J Med Chem 2021; 64:4430-4449. [PMID: 33829783 DOI: 10.1021/acs.jmedchem.0c01895] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The metabolic enzyme methionine adenosyltransferase 2A (MAT2A) was recently implicated as a synthetic lethal target in cancers with deletion of the methylthioadenosine phosphorylase (MTAP) gene, which is adjacent to the CDKN2A tumor suppressor and codeleted with CDKN2A in approximately 15% of all cancers. Previous attempts to target MAT2A with small-molecule inhibitors identified cellular adaptations that blunted their efficacy. Here, we report the discovery of highly potent, selective, orally bioavailable MAT2A inhibitors that overcome these challenges. Fragment screening followed by iterative structure-guided design enabled >10 000-fold improvement in potency of a family of allosteric MAT2A inhibitors that are substrate noncompetitive and inhibit release of the product, S-adenosyl methionine (SAM), from the enzyme's active site. We demonstrate that potent MAT2A inhibitors substantially reduce SAM levels in cancer cells and selectively block proliferation of MTAP-null cells both in tissue culture and xenograft tumors. These data supported progressing AG-270 into current clinical studies (ClinicalTrials.gov NCT03435250).
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Affiliation(s)
- Zenon Konteatis
- Agios Pharmaceuticals, Inc., 88 Sidney Street, Cambridge, Massachusetts 02139, United States
| | - Jeremy Travins
- Agios Pharmaceuticals, Inc., 88 Sidney Street, Cambridge, Massachusetts 02139, United States
| | - Stefan Gross
- Agios Pharmaceuticals, Inc., 88 Sidney Street, Cambridge, Massachusetts 02139, United States
| | - Katya Marjon
- Agios Pharmaceuticals, Inc., 88 Sidney Street, Cambridge, Massachusetts 02139, United States
| | - Amelia Barnett
- Agios Pharmaceuticals, Inc., 88 Sidney Street, Cambridge, Massachusetts 02139, United States
| | - Everton Mandley
- Agios Pharmaceuticals, Inc., 88 Sidney Street, Cambridge, Massachusetts 02139, United States
| | - Brandon Nicolay
- Agios Pharmaceuticals, Inc., 88 Sidney Street, Cambridge, Massachusetts 02139, United States
| | - Raj Nagaraja
- Agios Pharmaceuticals, Inc., 88 Sidney Street, Cambridge, Massachusetts 02139, United States
| | - Yue Chen
- Agios Pharmaceuticals, Inc., 88 Sidney Street, Cambridge, Massachusetts 02139, United States
| | - Yabo Sun
- Viva Biotech, Shanghai 201203, China
| | | | - Jie Yu
- Viva Biotech, Shanghai 201203, China
| | | | - Fan Jiang
- Viva Biotech, Shanghai 201203, China
| | | | | | - Yi Gao
- ChemPartner, Shanghai 201203, China
| | - Peter Kalev
- Agios Pharmaceuticals, Inc., 88 Sidney Street, Cambridge, Massachusetts 02139, United States
| | - Marc L Hyer
- Agios Pharmaceuticals, Inc., 88 Sidney Street, Cambridge, Massachusetts 02139, United States
| | - Byron DeLaBarre
- Agios Pharmaceuticals, Inc., 88 Sidney Street, Cambridge, Massachusetts 02139, United States
| | - Lei Jin
- Agios Pharmaceuticals, Inc., 88 Sidney Street, Cambridge, Massachusetts 02139, United States
| | - Anil K Padyana
- Agios Pharmaceuticals, Inc., 88 Sidney Street, Cambridge, Massachusetts 02139, United States
| | - Lenny Dang
- Agios Pharmaceuticals, Inc., 88 Sidney Street, Cambridge, Massachusetts 02139, United States
| | - Joshua Murtie
- Agios Pharmaceuticals, Inc., 88 Sidney Street, Cambridge, Massachusetts 02139, United States
| | - Scott A Biller
- Agios Pharmaceuticals, Inc., 88 Sidney Street, Cambridge, Massachusetts 02139, United States
| | - Zhihua Sui
- Agios Pharmaceuticals, Inc., 88 Sidney Street, Cambridge, Massachusetts 02139, United States
| | - Kevin M Marks
- Agios Pharmaceuticals, Inc., 88 Sidney Street, Cambridge, Massachusetts 02139, United States
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Qin S, Ren Y, Fu X, Shen J, Chen X, Wang Q, Bi X, Liu W, Li L, Liang G, Yang C, Shui W. Multiple ligand detection and affinity measurement by ultrafiltration and mass spectrometry analysis applied to fragment mixture screening. Anal Chim Acta 2015; 886:98-106. [PMID: 26320641 DOI: 10.1016/j.aca.2015.06.017] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Revised: 05/20/2015] [Accepted: 06/04/2015] [Indexed: 12/11/2022]
Abstract
Binding affinity of a small molecule drug candidate to a therapeutically relevant biomolecular target is regarded the first determinant of the candidate's efficacy. Although the ultrafiltration-LC/MS (UF-LC/MS) assay enables efficient ligand discovery for a specific target from a mixed pool of compounds, most previous analysis allowed for relative affinity ranking of different ligands. Moreover, the reliability of affinity measurement for multiple ligands with UF-LC/MS has hardly been strictly evaluated. In this study, we examined the accuracy of K(d) determination through UF-LC/MS by comparison with classical ITC measurement. A single-point K(d) calculation method was found to be suitable for affinity measurement of multiple ligands bound to the same target when binding competition is minimized. A second workflow based on analysis of the unbound fraction of compounds was then developed, which simplified sample preparation as well as warranted reliable ligand discovery. The new workflow implemented in a fragment mixture screen afforded rapid and sensitive detection of low-affinity ligands selectively bound to the RNA polymerase NS5B of hepatitis C virus. More importantly, ligand identification and affinity measurement for mixture-based fragment screens by UF-LC/MS were in good accordance with single ligand evaluation by conventional SPR analysis. This new approach is expected to become a valuable addition to the arsenal of high-throughput screening techniques for fragment-based drug discovery.
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Affiliation(s)
- Shanshan Qin
- Key Laboratory of Systems Microbial Biotechnology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China; High-throughput Molecular Drug Discovery Center, Tianjin Joint Academy of Biotechnology and Medicine, Tianjin 300457, China
| | - Yiran Ren
- High-throughput Molecular Drug Discovery Center, Tianjin Joint Academy of Biotechnology and Medicine, Tianjin 300457, China
| | - Xu Fu
- High-throughput Molecular Drug Discovery Center, Tianjin Joint Academy of Biotechnology and Medicine, Tianjin 300457, China
| | - Jie Shen
- Key Laboratory of Systems Microbial Biotechnology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China
| | - Xin Chen
- High-throughput Molecular Drug Discovery Center, Tianjin Joint Academy of Biotechnology and Medicine, Tianjin 300457, China
| | - Quan Wang
- High-throughput Molecular Drug Discovery Center, Tianjin Joint Academy of Biotechnology and Medicine, Tianjin 300457, China
| | - Xin Bi
- Institute of Elemento-organic Chemistry, Nankai University, Tianjin 300071, China
| | - Wenjing Liu
- High-throughput Molecular Drug Discovery Center, Tianjin Joint Academy of Biotechnology and Medicine, Tianjin 300457, China
| | - Lixin Li
- High-throughput Molecular Drug Discovery Center, Tianjin Joint Academy of Biotechnology and Medicine, Tianjin 300457, China
| | - Guangxin Liang
- Institute of Elemento-organic Chemistry, Nankai University, Tianjin 300071, China
| | - Cheng Yang
- High-throughput Molecular Drug Discovery Center, Tianjin Joint Academy of Biotechnology and Medicine, Tianjin 300457, China
| | - Wenqing Shui
- Key Laboratory of Systems Microbial Biotechnology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China.
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