1
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Ozgencil F, Gunindi HB, Eren G. Dual-targeted NAMPT inhibitors as a progressive strategy for cancer therapy. Bioorg Chem 2024; 149:107509. [PMID: 38824699 DOI: 10.1016/j.bioorg.2024.107509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2024] [Revised: 04/29/2024] [Accepted: 05/28/2024] [Indexed: 06/04/2024]
Abstract
In mammals, nicotinamide phosphoribosyltransferase (NAMPT) is a crucial enzyme in the nicotinamide adenine dinucleotide (NAD+) synthesis pathway catalyzing the condensation of nicotinamide (NAM) with 5-phosphoribosyl-1-pyrophosphate (PRPP) to produce nicotinamide mononucleotide (NMN). Given the pivotal role of NAD+ in a range of cellular functions, including DNA synthesis, redox reactions, cytokine generation, metabolism, and aging, NAMPT has become a promising target for many diseases, notably cancer. Therefore, various NAMPT inhibitors have been reported and classified as first and second-generation based on their chemical structures and design strategies, dual-targeted being one. However, most NAMPT inhibitors suffer from several limitations, such as dose-dependent toxicity and poor pharmacokinetic properties. Consequently, there is no clinically approved NAMPT inhibitor. Hence, research on discovering more effective and less toxic dual-targeted NAMPT inhibitors with desirable pharmacokinetic properties has drawn attention recently. This review summarizes the previously reported dual-targeted NAMPT inhibitors, focusing on their design strategies and advantages over the single-targeted therapies.
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Affiliation(s)
- Fikriye Ozgencil
- SIRTeam Group, Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Gazi University, 06330 Ankara, Türkiye
| | - Habibe Beyza Gunindi
- SIRTeam Group, Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Gazi University, 06330 Ankara, Türkiye
| | - Gokcen Eren
- SIRTeam Group, Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Gazi University, 06330 Ankara, Türkiye.
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2
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Tang H, Wang L, Wang T, Yang J, Zheng S, Tong J, Jiang S, Zhang X, Zhang K. Recent advances of targeting nicotinamide phosphoribosyltransferase (NAMPT) for cancer drug discovery. Eur J Med Chem 2023; 258:115607. [PMID: 37413882 DOI: 10.1016/j.ejmech.2023.115607] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 06/16/2023] [Accepted: 06/26/2023] [Indexed: 07/08/2023]
Abstract
Nicotinamide phosphoribosyltransferase (NAMPT) is the rate-limiting enzyme for the biosynthesis of NAD+ in the salvage pathway. NAMPT is overexpressed in various cancers, associating with a poor prognosis and tumor progression. Beyond cancer metabolism, recent evidence unravels additional roles of NAMPT in cancer biology, including DNA repair machinery, crosstalk with oncogenic signaling pathways, cancer cell stemness, and immune responses. NAMPT is a promising therapeutic target for cancer. However, first-generation NAMPT inhibitors exhibited limited efficacy and dose-limiting toxicities in clinical trials. Multiple strategies are being exploited to improve their efficacy and minimize toxic-side effects. This review discusses the biomarkers predictive of response to NAMPT inhibitors, and summarizes the most significant advances in the evolution of structurally distinct NAMPT inhibitors, the manipulation of targeted delivery technologies via antibody-drug conjugates (ADCs), PhotoActivated ChemoTherapy (PACT) and the intratumoral delivery system, as well as the development and pharmacological outcomes of NAMPT degraders. Finally, a discussion of future perspectives and challenges in this area is also included.
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Affiliation(s)
- He Tang
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, China
| | - Lin Wang
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, China
| | - Tianyu Wang
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, China
| | - Jiamei Yang
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, China
| | - Shuai Zheng
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, China
| | - Jun Tong
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, China
| | - Sheng Jiang
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, China.
| | - Xiangyu Zhang
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, China.
| | - Kuojun Zhang
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, China.
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3
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Fluorescent and theranostic probes for imaging nicotinamide phosphoribosyl transferase (NAMPT). Eur J Med Chem 2023; 248:115080. [PMID: 36608458 DOI: 10.1016/j.ejmech.2022.115080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 11/20/2022] [Accepted: 12/29/2022] [Indexed: 01/02/2023]
Abstract
Nicotinamide phosphoribosyl transferase (NAMPT) has been regarded as an attractive target for cancer therapy. However, there is a lack of chemical tools for real-time visualization and detection of NAMPT. Herein, the first fluorescent and theranostic probes were designed for imaging NAMPT, which had dual functions of diagnosis and treatment. The designed probes possessed good affinity and environmental sensitivity to NAMPT with a turn-on mechanism and were successfully applied in fluorescence detecting and imaging of NAMPT at the level of living cells and tissue sections. They also effectively inhibited tumor cell proliferation and arrested cell cycle at the G2 phase. These fluorescent probes enabled detection and visualization of NAMPT, representing effective chemical tools for the pathological diagnosis and treatment of cancer.
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4
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Beutner GL, George DT. Opportunities for the Application and Advancement of the Corey–Chaykovsky Cyclopropanation. Org Process Res Dev 2022. [DOI: 10.1021/acs.oprd.2c00315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Gregory L. Beutner
- Chemical Process Development, Bristol Myers Squibb Company, One Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - David T. George
- Chemical Process Development, Bristol Myers Squibb Company, One Squibb Drive, New Brunswick, New Jersey 08903, United States
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5
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Zhu Y, Xu P, Huang X, Shuai W, Liu L, Zhang S, Zhao R, Hu X, Wang G. From Rate-Limiting Enzyme to Therapeutic Target: The Promise of NAMPT in Neurodegenerative Diseases. Front Pharmacol 2022; 13:920113. [PMID: 35903330 PMCID: PMC9322656 DOI: 10.3389/fphar.2022.920113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Accepted: 06/08/2022] [Indexed: 11/15/2022] Open
Abstract
Nicotinamide phosphoribosyltransferase (NAMPT) is the rate-limiting enzyme in the nicotinamide adenine dinucleotide (NAD) salvage pathway in mammals. It is of great significance in the metabolic homeostasis and cell survival via synthesizing nicotinamide mononucleotide (NMN) through enzymatic activities, serving as a key protein involved in the host’s defense mechanism. The NAMPT metabolic pathway connects NAD-dependent sirtuin (SIRT) signaling, constituting the NAMPT–NAD–SIRT cascade, which is validated as a strong intrinsic defense system. Neurodegenerative diseases belong to the central nervous system (CNS) disease that seriously endangers human health. The World Health Organization (WHO) proposed that neurodegenerative diseases will become the second leading cause of human death in the next two decades. However, effective drugs for neurodegenerative diseases are scant. NAMPT is specifically highly expressed in the hippocampus, which mediates cell self-renewal and proliferation and oligodendrocyte synthesis by inducing the biosynthesis of NAD in neural stem cells/progenitor cells. Owing to the active biological function of NAMPT in neurogenesis, targeting NAMPT may be a powerful therapeutic strategy for neurodegenerative diseases. This study aims to review the structure and biological functions, the correlation with neurodegenerative diseases, and treatment advance of NAMPT, aiming to provide a novel idea for targeted therapy of neurodegenerative diseases.
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Affiliation(s)
- Yumeng Zhu
- Innovation Center of Nursing Research, West China School of Nursing, Department of Gastrointestinal Surgery, National Clinical Research Center for Geriatrics, Nursing Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu, China
| | - Ping Xu
- Emergency Department, Institute of Medical Big Data, Zigong Academy of Big Data for Science and Artificial Intelligence, Zigong Fourth People’s Hospital, Zigong, China
| | - Xuan Huang
- Innovation Center of Nursing Research, West China School of Nursing, Department of Gastrointestinal Surgery, National Clinical Research Center for Geriatrics, Nursing Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu, China
| | - Wen Shuai
- Innovation Center of Nursing Research, West China School of Nursing, Department of Gastrointestinal Surgery, National Clinical Research Center for Geriatrics, Nursing Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu, China
| | - Li Liu
- Innovation Center of Nursing Research, West China School of Nursing, Department of Gastrointestinal Surgery, National Clinical Research Center for Geriatrics, Nursing Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu, China
| | - Shuai Zhang
- Innovation Center of Nursing Research, West China School of Nursing, Department of Gastrointestinal Surgery, National Clinical Research Center for Geriatrics, Nursing Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu, China
| | - Rui Zhao
- Innovation Center of Nursing Research, West China School of Nursing, Department of Gastrointestinal Surgery, National Clinical Research Center for Geriatrics, Nursing Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu, China
- *Correspondence: Rui Zhao, ; Xiuying Hu, ; Guan Wang,
| | - Xiuying Hu
- Innovation Center of Nursing Research, West China School of Nursing, Department of Gastrointestinal Surgery, National Clinical Research Center for Geriatrics, Nursing Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu, China
- *Correspondence: Rui Zhao, ; Xiuying Hu, ; Guan Wang,
| | - Guan Wang
- Innovation Center of Nursing Research, West China School of Nursing, Department of Gastrointestinal Surgery, National Clinical Research Center for Geriatrics, Nursing Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu, China
- *Correspondence: Rui Zhao, ; Xiuying Hu, ; Guan Wang,
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6
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Dragovich PS, Haap W, Mulvihill MM, Plancher JM, Stepan AF. Small-Molecule Lead-Finding Trends across the Roche and Genentech Research Organizations. J Med Chem 2022; 65:3606-3615. [PMID: 35138850 DOI: 10.1021/acs.jmedchem.1c02106] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The origin of small-molecule leads that were pursued across the independent research organizations Roche and Genentech from 2009 to 2020 is described. The identified chemical series are derived from a variety of lead-finding methods, which include public information, high-throughput screening (both full file and focused), fragment-based design, DNA-encoded library technology, use of legacy internal data, in-licensing, and de novo design (often structure-based). The translation of the lead series into in vivo tool compounds and development candidates is discussed as are the associated biological target classes and corresponding therapeutic areas. These analyses identify important trends regarding the various lead-finding approaches, which will likely impact their future application in the Roche and Genentech research groups. They also highlight commonalities and differences across the two independent research organizations. Several caveats associated with the employed data collection and analysis methodologies are included to enhance the interpretation of the presented information.
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Affiliation(s)
- Peter S Dragovich
- Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Wolfgang Haap
- Roche Pharma Research and Early Development, Roche Innovation Center Basel, F. Hoffmann-La Roche AG, 4070 Basel, Switzerland
| | - Melinda M Mulvihill
- Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Jean-Marc Plancher
- Roche Pharma Research and Early Development, Roche Innovation Center Basel, F. Hoffmann-La Roche AG, 4070 Basel, Switzerland
| | - Antonia F Stepan
- Roche Pharma Research and Early Development, Roche Innovation Center Basel, F. Hoffmann-La Roche AG, 4070 Basel, Switzerland
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7
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Ai Y, Hwang L, MacKerell AD, Melnick A, Xue F. Progress toward B-Cell Lymphoma 6 BTB Domain Inhibitors for the Treatment of Diffuse Large B-Cell Lymphoma and Beyond. J Med Chem 2021; 64:4333-4358. [PMID: 33844535 DOI: 10.1021/acs.jmedchem.0c01686] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
B-cell lymphoma 6 (BCL6) is a master regulator of germinal center formation that produce antibody-secreting plasma cells and memory B-cells for sustained immune responses. The BTB domain of BCL6 (BCL6BTB) forms a homodimer that mediates transcriptional repression by recruiting its corepressor proteins to form a biologically functional transcriptional complex. The protein-protein interaction (PPI) between the BCL6BTB and its corepressors has emerged as a therapeutic target for the treatment of DLBCL and a number of other human cancers. This Perspective provides an overview of recent advances in the development of BCL6BTB inhibitors from reversible inhibitors, irreversible inhibitors, to BCL6 degraders. Inhibitor design and medicinal chemistry strategies for the development of novel compounds will be provided. The binding mode of new inhibitors to BCL6BTB are highlighted. Also, the in vitro and in vivo assays used for the evaluation of new compounds will be discussed.
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Affiliation(s)
- Yong Ai
- Department of Pharmaceutical Sciences, University of Maryland School of Pharmacy, 20 Penn Street, Baltimore, Maryland 21201, United States
| | - Lucia Hwang
- Department of Pharmaceutical Sciences, University of Maryland School of Pharmacy, 20 Penn Street, Baltimore, Maryland 21201, United States
| | - Alexander D MacKerell
- Department of Pharmaceutical Sciences, University of Maryland School of Pharmacy, 20 Penn Street, Baltimore, Maryland 21201, United States
| | - Ari Melnick
- Department of Hematology and Oncology, Weill Cornell Medical College, New York, New York 10021, United States.,Department of Pharmacology, Weill Cornell Medical College, New York, New York 10021, United States
| | - Fengtian Xue
- Department of Pharmaceutical Sciences, University of Maryland School of Pharmacy, 20 Penn Street, Baltimore, Maryland 21201, United States
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8
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Maximiano AP, Sá MM. Stereoselective Synthesis of Cyclopropylidene Iminolactones and Functionalized Cyclopropanecarboxamides Mediated by Triflic Acid. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900931] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Adrielle P. Maximiano
- Departamento de Química; Universidade Federal de Santa Catarina; SC 88040-900 Florianópolis Brazil
| | - Marcus M. Sá
- Departamento de Química; Universidade Federal de Santa Catarina; SC 88040-900 Florianópolis Brazil
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9
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Travelli C, Aprile S, Mattoteia D, Colombo G, Clemente N, Scanziani E, Terrazzino S, Alisi MA, Polenzani L, Grosa G, Genazzani AA, Tron GC, Galli U. Identification of potent triazolylpyridine nicotinamide phosphoribosyltransferase (NAMPT) inhibitors bearing a 1,2,3-triazole tail group. Eur J Med Chem 2019; 181:111576. [PMID: 31400709 DOI: 10.1016/j.ejmech.2019.111576] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 07/29/2019] [Accepted: 07/30/2019] [Indexed: 12/14/2022]
Abstract
The enzyme nicotinamide phosphoribosyltransferase is both a key intracellular enzyme for NAD biosynthesis (iNAMPT) and an extracellular cytokine (eNAMPT). The relationship between this latter role and the catalytic activity of the enzyme is at present unknown. With the intent of discovering inhibitors specifically able to target eNAMPT, we increased the polarity of MV78 (EC50 = 5.8 nM; IC50 = 3.1 nM), a NAMPT inhibitor previously discovered by us. The replacement of a phenyl ring with a 1,2,3-triazole bearing a protonable N,N-dialkyl methanamine group gave a series of molecules which maintained the inhibition of the enzymatic activity but were unable to cross the plasma membrane and affect cell viability in vitro. Compounds 30b and 30f can therefore be considered as the first experimental/pharmacological tools for scientists that wish to understand the role of the catalytic activity of eNAMPT. Serendipitously, we also discovered a compound (25) which, notwithstanding its high polarity, was able to cross the plasma membrane being cytotoxic, a potent NAMPT inhibitor and effective in reducing growth of triple negative mammary carcinoma in mice. In our hands, 25 lacked retinal and cardiac toxicity, although we observed a lesser toxicity of NAMPT inhibitors in general compared to other reports.
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Affiliation(s)
- Cristina Travelli
- Dipartimento di Scienze del Farmaco, Università del Piemonte Orientale, Largo Donegani 2, 28100, Novara, Italy; Dipartimento di Scienze del Farmaco, Università degli Studi di Pavia, Viale Taramelli 12, 27100, Pavia, Italy
| | - Silvio Aprile
- Dipartimento di Scienze del Farmaco, Università del Piemonte Orientale, Largo Donegani 2, 28100, Novara, Italy
| | - Daiana Mattoteia
- Dipartimento di Scienze del Farmaco, Università del Piemonte Orientale, Largo Donegani 2, 28100, Novara, Italy
| | - Giorgia Colombo
- Dipartimento di Scienze del Farmaco, Università del Piemonte Orientale, Largo Donegani 2, 28100, Novara, Italy
| | - Nausicaa Clemente
- Dipartimento di Scienze della Salute and IRCAD, Università degli Studi del Piemonte Orientale, Via Solaroli 17, 28100, Novara, Italy
| | - Eugenio Scanziani
- Dipartimento di Medicina Veterinaria, Università degli Studi di Milano, Via Celoria 10, 20133, Milano, Italy; Mouse and Animal Pathology Lab (MAPLab), Fondazione Università degli Studi di Milano, Viale Ortles 22/4, 20139, Milano, Italy
| | - Salvatore Terrazzino
- Dipartimento di Scienze del Farmaco, Università del Piemonte Orientale, Largo Donegani 2, 28100, Novara, Italy
| | - Maria Alessandra Alisi
- Angelini RR&D (Research, Regulatory & Development), Angelini S.p.A, Piazzale della Stazione Snc, 00071, S. Palomba, Roma, Italy
| | - Lorenzo Polenzani
- Angelini RR&D (Research, Regulatory & Development), Angelini S.p.A, Piazzale della Stazione Snc, 00071, S. Palomba, Roma, Italy
| | - Giorgio Grosa
- Dipartimento di Scienze del Farmaco, Università del Piemonte Orientale, Largo Donegani 2, 28100, Novara, Italy
| | - Armando A Genazzani
- Dipartimento di Scienze del Farmaco, Università del Piemonte Orientale, Largo Donegani 2, 28100, Novara, Italy
| | - Gian Cesare Tron
- Dipartimento di Scienze del Farmaco, Università del Piemonte Orientale, Largo Donegani 2, 28100, Novara, Italy
| | - Ubaldina Galli
- Dipartimento di Scienze del Farmaco, Università del Piemonte Orientale, Largo Donegani 2, 28100, Novara, Italy.
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10
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Daemen A, Liu B, Song K, Kwong M, Gao M, Hong R, Nannini M, Peterson D, Liederer BM, de la Cruz C, Sangaraju D, Jaochico A, Zhao X, Sandoval W, Hunsaker T, Firestein R, Latham S, Sampath D, Evangelista M, Hatzivassiliou G. Pan-Cancer Metabolic Signature Predicts Co-Dependency on Glutaminase and De Novo Glutathione Synthesis Linked to a High-Mesenchymal Cell State. Cell Metab 2018; 28:383-399.e9. [PMID: 30043751 DOI: 10.1016/j.cmet.2018.06.003] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2016] [Revised: 03/16/2018] [Accepted: 06/04/2018] [Indexed: 12/20/2022]
Abstract
The enzyme glutaminase (GLS1) is currently in clinical trials for oncology, yet there are no clear diagnostic criteria to identify responders. The evaluation of 25 basal breast lines expressing GLS1, predominantly through its splice isoform GAC, demonstrated that only GLS1-dependent basal B lines required it for maintaining de novo glutathione synthesis in addition to mitochondrial bioenergetics. Drug sensitivity profiling of 407 tumor lines with GLS1 and gamma-glutamylcysteine synthetase (GCS) inhibitors revealed a high degree of co-dependency on both enzymes across indications, suggesting that redox balance is a key function of GLS1 in tumors. To leverage these findings, we derived a pan-cancer metabolic signature predictive of GLS1/GCS co-dependency and validated it in vivo using four lung patient-derived xenograft models, revealing the additional requirement for expression of GAC above a threshold (log2RPKM + 1 ≥ 4.5, where RPKM is reads per kilobase per million mapped reads). Analysis of the pan-TCGA dataset with our signature identified multiple indications, including mesenchymal tumors, as putative responders to GLS1 inhibitors.
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Affiliation(s)
- Anneleen Daemen
- Bioinformatics and Computational Biology, Genentech, South San Francisco, CA 94080, USA.
| | - Bonnie Liu
- Translational Oncology, Genentech, South San Francisco, CA 94080, USA
| | - Kyung Song
- Translational Oncology, Genentech, South San Francisco, CA 94080, USA
| | - Mandy Kwong
- Translational Oncology, Genentech, South San Francisco, CA 94080, USA
| | - Min Gao
- Translational Oncology, Genentech, South San Francisco, CA 94080, USA
| | - Rebecca Hong
- Translational Oncology, Genentech, South San Francisco, CA 94080, USA
| | - Michelle Nannini
- Translational Oncology, Genentech, South San Francisco, CA 94080, USA
| | - David Peterson
- Discovery Oncology, Genentech, South San Francisco, CA 94080, USA
| | - Bianca M Liederer
- Drug Metabolism and Pharmacokinetics, Genentech, South San Francisco, CA 94080, USA
| | - Cecile de la Cruz
- Translational Oncology, Genentech, South San Francisco, CA 94080, USA
| | - Dewakar Sangaraju
- Drug Metabolism and Pharmacokinetics, Genentech, South San Francisco, CA 94080, USA
| | - Allan Jaochico
- Drug Metabolism and Pharmacokinetics, Genentech, South San Francisco, CA 94080, USA
| | - Xiaofeng Zhao
- Drug Metabolism and Pharmacokinetics, Genentech, South San Francisco, CA 94080, USA
| | - Wendy Sandoval
- Microchemistry, Proteomics and Lipidomics, Genentech, South San Francisco, CA 94080, USA
| | - Thomas Hunsaker
- Translational Oncology, Genentech, South San Francisco, CA 94080, USA
| | - Ron Firestein
- Pathology, Genentech, South San Francisco, CA 94080, USA
| | - Sheerin Latham
- Drug Metabolism and Pharmacokinetics, Genentech, South San Francisco, CA 94080, USA
| | - Deepak Sampath
- Translational Oncology, Genentech, South San Francisco, CA 94080, USA
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11
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Korepanova A, Longenecker KL, Pratt SD, Panchal SC, Clark RF, Lake M, Gopalakrishnan SM, Raich D, Sun C, Petros AM. Fragment-based discovery of a potent NAMPT inhibitor. Bioorg Med Chem Lett 2018; 28:437-440. [DOI: 10.1016/j.bmcl.2017.12.023] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Revised: 12/04/2017] [Accepted: 12/12/2017] [Indexed: 02/07/2023]
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12
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Crystal structure-based comparison of two NAMPT inhibitors. Acta Pharmacol Sin 2018; 39:294-301. [PMID: 28858298 DOI: 10.1038/aps.2017.80] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Accepted: 05/11/2017] [Indexed: 02/07/2023] Open
Abstract
Inhibition of nicotinamide phosphoribosyltransferase (NAMPT) is a novel strategy for cancer therapy, but only two inhibitors of NAMPT (FK866 and CHS828) have progressed into clinical trials. This study seeks to compare a novel potent NAMPT inhibitor, MS0, with a classical inhibitor FK866 in their biological activity and molecular binding mode, thereby contributing to future chemical optimization and a further understanding of the action mode of NAMPT inhibitors. The IC50 values of MS0 and FK866 in inhibition of recombinant human NAMPT activity were 9.08±0.90 and 1.60±0.32 nmol/L, respectively. Consistently, FK866 exerted better antiproliferation in 6 human cancer cell lines (HepG2, A2780, 95-D, A549, U2OS and U266) than MS0 with IC50 values nearly 12-fold to 225-fold lower than those of MS0. Co-crystal structures of wild-type human NAMPT complexed with MS0 or FK866 were elucidated, which revealed that MS0 did not interact with Ser241. The hydrogen bond mediated by crystallographic water between MS0 and His191 or Val350 of NAMPT did not exist in FK866. Instead, FK866 exhibited hydrophobic interactions with Arg349. Based on the activity assays and crystal structure analyses, we elaborate the reason why the antiproliferation activity of MS0 was not as good as that of FK866, which would contributes to the current understanding of the mode of action of NAMPT inhibitors and will also contribute to further development of anticancer drugs in the future.
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13
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Palacios DS, Meredith E, Kawanami T, Adams C, Chen X, Darsigny V, Geno E, Palermo M, Baird D, Boynton G, Busby SA, George EL, Guy C, Hewett J, Tierney L, Thigale S, Weihofen W, Wang L, White N, Yin M, Argikar UA. Structure based design of nicotinamide phosphoribosyltransferase (NAMPT) inhibitors from a phenotypic screen. Bioorg Med Chem Lett 2018; 28:365-370. [DOI: 10.1016/j.bmcl.2017.12.037] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Revised: 12/13/2017] [Accepted: 12/16/2017] [Indexed: 10/18/2022]
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14
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Highly stereoselective synthesis of 1-cyanocyclopropane-carboxamides from 3-substituted-2-cyanoacrylamides with N -tosylhydrazones under metal-free conditions. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.05.070] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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15
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Discovery of a B-Cell Lymphoma 6 Protein-Protein Interaction Inhibitor by a Biophysics-Driven Fragment-Based Approach. J Med Chem 2017; 60:4358-4368. [PMID: 28471657 DOI: 10.1021/acs.jmedchem.7b00313] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
B-cell lymphoma 6 (BCL6) is a transcriptional factor that expresses in lymphocytes and regulates the differentiation and proliferation of lymphocytes. Therefore, BCL6 is a therapeutic target for autoimmune diseases and cancer treatment. This report presents the discovery of BCL6-corepressor interaction inhibitors by using a biophysics-driven fragment-based approach. Using the surface plasmon resonance (SPR)-based fragment screening, we successfully identified fragment 1 (SPR KD = 1200 μM, ligand efficiency (LE) = 0.28), a competitive binder to the natural ligand BCoR peptide. Moreover, we elaborated 1 into the more potent compound 7 (SPR KD = 0.078 μM, LE = 0.37, cell-free protein-protein interaction (PPI) IC50 = 0.48 μM (ELISA), cellular PPI IC50 = 8.6 μM (M2H)) by a structure-based design and structural integration with a second high-throughput screening hit.
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16
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Alonezi S, Tusiimire J, Wallace J, Dufton MJ, Parkinson JA, Young LC, Clements CJ, Park JK, Jeon JW, Ferro VA, Watson DG. Metabolomic Profiling of the Synergistic Effects of Melittin in Combination with Cisplatin on Ovarian Cancer Cells. Metabolites 2017; 7:metabo7020014. [PMID: 28420117 PMCID: PMC5487985 DOI: 10.3390/metabo7020014] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Revised: 04/10/2017] [Accepted: 04/12/2017] [Indexed: 12/13/2022] Open
Abstract
Melittin, the main peptide present in bee venom, has been proposed as having potential for anticancer therapy; the addition of melittin to cisplatin, a first line treatment for ovarian cancer, may increase the therapeutic response in cancer treatment via synergy, resulting in improved tolerability, reduced relapse, and decreased drug resistance. Thus, this study was designed to compare the metabolomic effects of melittin in combination with cisplatin in cisplatin-sensitive (A2780) and resistant (A2780CR) ovarian cancer cells. Liquid chromatography (LC) coupled with mass spectrometry (MS) was applied to identify metabolic changes in A2780 (combination treatment 5 μg/mL melittin + 2 μg/mL cisplatin) and A2780CR (combination treatment 2 μg/mL melittin + 10 μg/mL cisplatin) cells. Principal components analysis (PCA) and orthogonal partial least squares discriminant analysis (OPLS-DA) multivariate data analysis models were produced using SIMCA-P software. All models displayed good separation between experimental groups and high-quality goodness of fit (R2) and goodness of prediction (Q2), respectively. The combination treatment induced significant changes in both cell lines involving reduction in the levels of metabolites in the tricarboxylic acid (TCA) cycle, oxidative phosphorylation, purine and pyrimidine metabolism, and the arginine/proline pathway. The combination of melittin with cisplatin that targets these pathways had a synergistic effect. The melittin-cisplatin combination had a stronger effect on the A2780 cell line in comparison with the A2780CR cell line. The metabolic effects of melittin and cisplatin in combination were very different from those of each agent alone.
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Affiliation(s)
- Sanad Alonezi
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow G4 0RE, UK.
| | - Jonans Tusiimire
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow G4 0RE, UK.
- Department of Pharmacy, Faculty of Medicine, Mbarara University of Science and Technology, P.O. Box 1410 Mbarara, Uganda.
| | - Jennifer Wallace
- WestCHEM Department of Pure and Applied Chemistry, University of Strathclyde, Glasgow G1 1XL, UK.
| | - Mark J Dufton
- WestCHEM Department of Pure and Applied Chemistry, University of Strathclyde, Glasgow G1 1XL, UK.
| | - John A Parkinson
- WestCHEM Department of Pure and Applied Chemistry, University of Strathclyde, Glasgow G1 1XL, UK.
| | - Louise C Young
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow G4 0RE, UK.
| | - Carol J Clements
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow G4 0RE, UK.
| | - Jin-Kyu Park
- #204, Beesen Co. Ltd., Bio Venture Town, Yuseong Daero 1662, Dae Jeon 34054, Korea.
| | - Jong-Woon Jeon
- #204, Beesen Co. Ltd., Bio Venture Town, Yuseong Daero 1662, Dae Jeon 34054, Korea.
| | - Valerie A Ferro
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow G4 0RE, UK.
| | - David G Watson
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow G4 0RE, UK.
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17
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Travelli C, Aprile S, Rahimian R, Grolla AA, Rogati F, Bertolotti M, Malagnino F, di Paola R, Impellizzeri D, Fusco R, Mercalli V, Massarotti A, Stortini G, Terrazzino S, Del Grosso E, Fakhfouri G, Troiani MP, Alisi MA, Grosa G, Sorba G, Canonico PL, Orsomando G, Cuzzocrea S, Genazzani AA, Galli U, Tron GC. Identification of Novel Triazole-Based Nicotinamide Phosphoribosyltransferase (NAMPT) Inhibitors Endowed with Antiproliferative and Antiinflammatory Activity. J Med Chem 2017; 60:1768-1792. [DOI: 10.1021/acs.jmedchem.6b01392] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Cristina Travelli
- Dipartimento
di Scienze del Farmaco, Università degli Studi del Piemonte Orientale “A. Avogadro”, Largo Donegani 2, 28100 Novara, Italy
| | - Silvio Aprile
- Dipartimento
di Scienze del Farmaco, Università degli Studi del Piemonte Orientale “A. Avogadro”, Largo Donegani 2, 28100 Novara, Italy
| | - Reza Rahimian
- Department
of Pharmacology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
- Department
of Psychiatry and Neuroscience, Faculty of Medicine, Research Center
of the Mental Health Institute of Quebec, Laval University, Quebec, Quebec G1J 2G3, Canada
| | - Ambra A. Grolla
- Dipartimento
di Scienze del Farmaco, Università degli Studi del Piemonte Orientale “A. Avogadro”, Largo Donegani 2, 28100 Novara, Italy
| | - Federica Rogati
- Dipartimento
di Scienze del Farmaco, Università degli Studi del Piemonte Orientale “A. Avogadro”, Largo Donegani 2, 28100 Novara, Italy
| | - Mattia Bertolotti
- Dipartimento
di Scienze del Farmaco, Università degli Studi del Piemonte Orientale “A. Avogadro”, Largo Donegani 2, 28100 Novara, Italy
| | - Floriana Malagnino
- Dipartimento
di Scienze del Farmaco, Università degli Studi del Piemonte Orientale “A. Avogadro”, Largo Donegani 2, 28100 Novara, Italy
| | - Rosanna di Paola
- Department
of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Via C. Valeria Gazzi, 98100 Messina, Italy
| | - Daniela Impellizzeri
- Department
of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Via C. Valeria Gazzi, 98100 Messina, Italy
| | - Roberta Fusco
- Department
of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Via C. Valeria Gazzi, 98100 Messina, Italy
| | - Valentina Mercalli
- Dipartimento
di Scienze del Farmaco, Università degli Studi del Piemonte Orientale “A. Avogadro”, Largo Donegani 2, 28100 Novara, Italy
| | - Alberto Massarotti
- Dipartimento
di Scienze del Farmaco, Università degli Studi del Piemonte Orientale “A. Avogadro”, Largo Donegani 2, 28100 Novara, Italy
| | - Giorgio Stortini
- Department
of Oncology, Nerviano Medical Sciences Srl, Viale Pasteur 10, 20014 Nerviano, Milan, Italy
| | - Salvatore Terrazzino
- Dipartimento
di Scienze del Farmaco, Università degli Studi del Piemonte Orientale “A. Avogadro”, Largo Donegani 2, 28100 Novara, Italy
| | - Erika Del Grosso
- Dipartimento
di Scienze del Farmaco, Università degli Studi del Piemonte Orientale “A. Avogadro”, Largo Donegani 2, 28100 Novara, Italy
| | - Gohar Fakhfouri
- Department
of Pharmacology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Maria Pia Troiani
- R&D, Angelini Research Center, Piazzale della Stazione, 00040 S. Palomba-Pomezia, Italy
| | | | - Giorgio Grosa
- Dipartimento
di Scienze del Farmaco, Università degli Studi del Piemonte Orientale “A. Avogadro”, Largo Donegani 2, 28100 Novara, Italy
| | - Giovanni Sorba
- Dipartimento
di Scienze del Farmaco, Università degli Studi del Piemonte Orientale “A. Avogadro”, Largo Donegani 2, 28100 Novara, Italy
| | - Pier Luigi Canonico
- Dipartimento
di Scienze del Farmaco, Università degli Studi del Piemonte Orientale “A. Avogadro”, Largo Donegani 2, 28100 Novara, Italy
| | - Giuseppe Orsomando
- Department
of Clinical Sciences (DISCO), Section of Biochemistry, Polytechnic University of Marche, Via Ranieri 67, 60131 Ancona, Italy
| | - Salvatore Cuzzocrea
- Department
of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Via C. Valeria Gazzi, 98100 Messina, Italy
| | - Armando A. Genazzani
- Dipartimento
di Scienze del Farmaco, Università degli Studi del Piemonte Orientale “A. Avogadro”, Largo Donegani 2, 28100 Novara, Italy
| | - Ubaldina Galli
- Dipartimento
di Scienze del Farmaco, Università degli Studi del Piemonte Orientale “A. Avogadro”, Largo Donegani 2, 28100 Novara, Italy
| | - Gian Cesare Tron
- Dipartimento
di Scienze del Farmaco, Università degli Studi del Piemonte Orientale “A. Avogadro”, Largo Donegani 2, 28100 Novara, Italy
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Zak M, Yuen PW, Liu X, Patel S, Sampath D, Oeh J, Liederer BM, Wang W, O’Brien T, Xiao Y, Skelton N, Hua R, Sodhi J, Wang Y, Zhang L, Zhao G, Zheng X, Ho YC, Bair KW, Dragovich PS. Minimizing CYP2C9 Inhibition of Exposed-Pyridine NAMPT (Nicotinamide Phosphoribosyltransferase) Inhibitors. J Med Chem 2016; 59:8345-68. [DOI: 10.1021/acs.jmedchem.6b00697] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Mark Zak
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Po-wai Yuen
- Pharmaron Beijing Co. Ltd., 6 Taihe Road, BDA, Beijing 100176, PR China
| | - Xiongcai Liu
- Pharmaron Beijing Co. Ltd., 6 Taihe Road, BDA, Beijing 100176, PR China
| | - Snahel Patel
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Deepak Sampath
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Jason Oeh
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Bianca M. Liederer
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Weiru Wang
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Thomas O’Brien
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Yang Xiao
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Nicholas Skelton
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Rongbao Hua
- Pharmaron Beijing Co. Ltd., 6 Taihe Road, BDA, Beijing 100176, PR China
| | - Jasleen Sodhi
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Yunli Wang
- Pharmaron Beijing Co. Ltd., 6 Taihe Road, BDA, Beijing 100176, PR China
| | - Lei Zhang
- Pharmaron Beijing Co. Ltd., 6 Taihe Road, BDA, Beijing 100176, PR China
| | - Guiling Zhao
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Xiaozhang Zheng
- FORMA Therapeutics Inc., 500 Arsenal Street, Watertown, Massachusetts 02472, United States
| | - Yen-Ching Ho
- FORMA Therapeutics Inc., 500 Arsenal Street, Watertown, Massachusetts 02472, United States
| | - Kenneth W. Bair
- FORMA Therapeutics Inc., 500 Arsenal Street, Watertown, Massachusetts 02472, United States
| | - Peter S. Dragovich
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
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19
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Bai J, Liao C, Liu Y, Qin X, Chen J, Qiu Y, Qin D, Li Z, Tu ZC, Jiang S. Structure-Based Design of Potent Nicotinamide Phosphoribosyltransferase Inhibitors with Promising in Vitro and in Vivo Antitumor Activities. J Med Chem 2016; 59:5766-79. [PMID: 27224875 DOI: 10.1021/acs.jmedchem.6b00324] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Inhibition of nicotinamide phosphoribosyltransferase (NAMPT) has the potential to directly limit NAD production in cancer cells and is an effective strategy for cancer treatment. Using a structure-based strategy, we have designed a new class of potent small-molecule inhibitors of NAMPT. Several designed compounds showed promising antiproliferative activities in vitro. (E)-N-(5-((4-(((2-(1H-Indol-3-yl)ethyl)(isopropyl)amino)methyl)phenyl)amino)pentyl)-3-(pyridin-3-yl)acrylamide, 30, bearing an indole moiety, has an IC50 of 25.3 nM for binding to the NAMPT protein and demonstrated promising inhibitory activities in the nanomolar range against several cancer cell lines (MCF-7 GI50 = 0.13 nM; MDA-MB-231 GI50 = 0.15 nM). Triple-negative breast cancer is the most malignant subtype of breast cancer with no effective targeted treatments currently available. Significant antitumor efficacy of compound 30 was achieved (TGI was 73.8%) in an orthotopic MDA-MB-231 triple-negative breast cancer xenograft tumor model. This paper reports promising lead molecules for the inhibition of NAMPT which could serve as a basis for further investigation.
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Affiliation(s)
- Jinhong Bai
- Laboratory of Medicinal Chemistry, Guangzhou Institute of Biomedicine and Health, Chinese Academy of Sciences , 190 Kai Yuan Avenue, Science Park, Guangzhou 510530, China
| | - Chenzhong Liao
- School of Medical Engineering, Hefei University of Technology , Hefei, Anhui 230009, China
| | - Yanghan Liu
- Laboratory of Medicinal Chemistry, Guangzhou Institute of Biomedicine and Health, Chinese Academy of Sciences , 190 Kai Yuan Avenue, Science Park, Guangzhou 510530, China
| | - Xiaochu Qin
- Laboratory of Medicinal Chemistry, Guangzhou Institute of Biomedicine and Health, Chinese Academy of Sciences , 190 Kai Yuan Avenue, Science Park, Guangzhou 510530, China
| | - Jiaxuan Chen
- Laboratory of Medicinal Chemistry, Guangzhou Institute of Biomedicine and Health, Chinese Academy of Sciences , 190 Kai Yuan Avenue, Science Park, Guangzhou 510530, China
| | - Yatao Qiu
- Laboratory of Medicinal Chemistry, Guangzhou Institute of Biomedicine and Health, Chinese Academy of Sciences , 190 Kai Yuan Avenue, Science Park, Guangzhou 510530, China
| | - Dongguang Qin
- Laboratory of Medicinal Chemistry, Guangzhou Institute of Biomedicine and Health, Chinese Academy of Sciences , 190 Kai Yuan Avenue, Science Park, Guangzhou 510530, China.,ABA Chemicals Corporation , Shanghai 200063, China
| | - Zheng Li
- The Houston Methodist Research Institute , Houston, Texas 77030, United States
| | - Zheng-Chao Tu
- Laboratory of Medicinal Chemistry, Guangzhou Institute of Biomedicine and Health, Chinese Academy of Sciences , 190 Kai Yuan Avenue, Science Park, Guangzhou 510530, China
| | - Sheng Jiang
- Laboratory of Medicinal Chemistry, Guangzhou Institute of Biomedicine and Health, Chinese Academy of Sciences , 190 Kai Yuan Avenue, Science Park, Guangzhou 510530, China
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20
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Application of virtual screening to the discovery of novel nicotinamide phosphoribosyltransferase (NAMPT) inhibitors with potential for the treatment of cancer and axonopathies. Bioorg Med Chem Lett 2016; 26:2920-2926. [PMID: 27158141 DOI: 10.1016/j.bmcl.2016.04.039] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Revised: 04/14/2016] [Accepted: 04/15/2016] [Indexed: 11/22/2022]
Abstract
NAMPT may represent a novel target for drug discovery in various therapeutic areas, including oncology and inflammation. Additionally, recent work has suggested that targeting NAMPT has potential in treating axon degeneration. In this work, publicly available X-ray co-crystal structures of NAMPT and the structures of two known NAMPT inhibitors were used as the basis for a structure- and ligand-based virtual screening campaign. From this, two novel series of NAMPT inhibitors were identified, one of which showed a statistically significant protective effect when tested in a cellular model of axon degeneration.
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21
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Abstract
INTRODUCTION Fragment-based approaches have played an increasing role alongside high-throughput screening in drug discovery for 15 years. The label-free biosensor technology based on surface plasmon resonance (SPR) is now sensitive and informative enough to serve during primary screens and validation steps. AREAS COVERED In this review, the authors discuss the role of SPR in fragment screening. After a brief description of the underlying principles of the technique and main device developments, they evaluate the advantages and adaptations of SPR for fragment-based drug discovery. SPR can also be applied to challenging targets such as membrane receptors and enzymes. EXPERT OPINION The high-level of immobilization of the protein target and its stability are key points for a relevant screening that can be optimized using oriented immobilized proteins and regenerable sensors. Furthermore, to decrease the rate of false negatives, a selectivity test may be performed in parallel on the main target bearing the binding site mutated or blocked with a low-off-rate ligand. Fragment-based drug design, integrated in a rational workflow led by SPR, will thus have a predominant role for the next wave of drug discovery which could be greatly enhanced by new improvements in SPR devices.
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Affiliation(s)
- Alain Chavanieu
- a Institut des Biomolécules Max Mousseron (IBMM), UMR 5247 , Université de Montpellier, CNRS, ENSCM , Montpellier Cedex 5, France
| | - Martine Pugnière
- b IRCM , Institut de Recherche en Cancérologie de Montpellier , Montpellier , France.,c INSERM, U1194 , Université Montpellier , Montpellier , France.,d ICM , Institut Régional du Cancer , Montpellier , France
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22
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Blöcher R, Lamers C, Wittmann SK, Merk D, Hartmann M, Weizel L, Diehl O, Brüggerhoff A, Boß M, Kaiser A, Schader T, Göbel T, Grundmann M, Angioni C, Heering J, Geisslinger G, Wurglics M, Kostenis E, Brüne B, Steinhilber D, Schubert-Zsilavecz M, Kahnt AS, Proschak E. N-Benzylbenzamides: A Novel Merged Scaffold for Orally Available Dual Soluble Epoxide Hydrolase/Peroxisome Proliferator-Activated Receptor γ Modulators. J Med Chem 2015; 59:61-81. [PMID: 26595749 DOI: 10.1021/acs.jmedchem.5b01239] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Metabolic syndrome (MetS) is a multifactorial disease cluster that consists of dyslipidemia, cardiovascular disease, type 2 diabetes mellitus, and obesity. MetS patients are strongly exposed to polypharmacy; however, the number of pharmacological compounds required for MetS treatment can be reduced by the application of multitarget compounds. This study describes the design of dual-target ligands that target soluble epoxide hydrolase (sEH) and the peroxisome proliferator-activated receptor type γ (PPARγ). Simultaneous modulation of sEH and PPARγ can improve diabetic conditions and hypertension at once. N-Benzylbenzamide derivatives were determined to fit a merged sEH/PPARγ pharmacophore, and structure-activity relationship studies were performed on both targets, resulting in a submicromolar (sEH IC50 = 0.3 μM/PPARγ EC50 = 0.3 μM) modulator 14c. In vitro and in vivo evaluations revealed good ADME properties qualifying 14c as a pharmacological tool compound for long-term animal models of MetS.
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Affiliation(s)
- René Blöcher
- Institute of Pharmaceutical Chemistry, Goethe-University Frankfurt , Max-von-Laue-Strasse 9, D-60438 Frankfurt am Main, Germany
| | - Christina Lamers
- Institute of Pharmaceutical Chemistry, Goethe-University Frankfurt , Max-von-Laue-Strasse 9, D-60438 Frankfurt am Main, Germany
| | - Sandra K Wittmann
- Institute of Pharmaceutical Chemistry, Goethe-University Frankfurt , Max-von-Laue-Strasse 9, D-60438 Frankfurt am Main, Germany
| | - Daniel Merk
- Institute of Pharmaceutical Chemistry, Goethe-University Frankfurt , Max-von-Laue-Strasse 9, D-60438 Frankfurt am Main, Germany
| | - Markus Hartmann
- Institute of Pharmaceutical Chemistry, Goethe-University Frankfurt , Max-von-Laue-Strasse 9, D-60438 Frankfurt am Main, Germany
| | - Lilia Weizel
- Institute of Pharmaceutical Chemistry, Goethe-University Frankfurt , Max-von-Laue-Strasse 9, D-60438 Frankfurt am Main, Germany
| | - Olaf Diehl
- Institute of Pharmaceutical Chemistry, Goethe-University Frankfurt , Max-von-Laue-Strasse 9, D-60438 Frankfurt am Main, Germany
| | - Astrid Brüggerhoff
- Institute of Pharmaceutical Chemistry, Goethe-University Frankfurt , Max-von-Laue-Strasse 9, D-60438 Frankfurt am Main, Germany
| | - Marcel Boß
- Institute of Biochemistry I, Goethe-University Frankfurt , Theodor-Stern-Kai 7, D-60590 Frankfurt am Main, Germany
| | - Astrid Kaiser
- Institute of Pharmaceutical Chemistry, Goethe-University Frankfurt , Max-von-Laue-Strasse 9, D-60438 Frankfurt am Main, Germany
| | - Tim Schader
- Institute of Pharmaceutical Chemistry, Goethe-University Frankfurt , Max-von-Laue-Strasse 9, D-60438 Frankfurt am Main, Germany
| | - Tamara Göbel
- Institute of Pharmaceutical Chemistry, Goethe-University Frankfurt , Max-von-Laue-Strasse 9, D-60438 Frankfurt am Main, Germany
| | - Manuel Grundmann
- Institute of Pharmaceutical Biology, Rheinische Friedrich-Wilhelms-Universität Bonn , Nussallee 6, D-53115 Bonn, Germany
| | - Carlo Angioni
- Institute of Clinical Pharmacology, Goethe-University Frankfurt , Theodor-Stern-Kai 7, D-60590 Frankfurt am Main, Germany
| | - Jan Heering
- Project Group Translational Medicine and Pharmacology TMP, Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Theodor-Stern-Kai 7, D-60590 Frankfurt am Main, Germany
| | - Gerd Geisslinger
- Institute of Clinical Pharmacology, Goethe-University Frankfurt , Theodor-Stern-Kai 7, D-60590 Frankfurt am Main, Germany
| | - Mario Wurglics
- Institute of Pharmaceutical Chemistry, Goethe-University Frankfurt , Max-von-Laue-Strasse 9, D-60438 Frankfurt am Main, Germany
| | - Evi Kostenis
- Institute of Pharmaceutical Biology, Rheinische Friedrich-Wilhelms-Universität Bonn , Nussallee 6, D-53115 Bonn, Germany
| | - Bernhard Brüne
- Institute of Biochemistry I, Goethe-University Frankfurt , Theodor-Stern-Kai 7, D-60590 Frankfurt am Main, Germany
| | - Dieter Steinhilber
- Institute of Pharmaceutical Chemistry, Goethe-University Frankfurt , Max-von-Laue-Strasse 9, D-60438 Frankfurt am Main, Germany
| | - Manfred Schubert-Zsilavecz
- Institute of Pharmaceutical Chemistry, Goethe-University Frankfurt , Max-von-Laue-Strasse 9, D-60438 Frankfurt am Main, Germany
| | - Astrid S Kahnt
- Institute of Pharmaceutical Chemistry, Goethe-University Frankfurt , Max-von-Laue-Strasse 9, D-60438 Frankfurt am Main, Germany
| | - Ewgenij Proschak
- Institute of Pharmaceutical Chemistry, Goethe-University Frankfurt , Max-von-Laue-Strasse 9, D-60438 Frankfurt am Main, Germany
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23
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Wang X, Xu TY, Liu XZ, Zhang SL, Wang P, Li ZY, Guan YF, Wang SN, Dong GQ, Zhuo S, Le YY, Sheng CQ, Miao CY. Discovery of Novel Inhibitors and Fluorescent Probe Targeting NAMPT. Sci Rep 2015; 5:12657. [PMID: 26227784 PMCID: PMC4521150 DOI: 10.1038/srep12657] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Accepted: 07/01/2015] [Indexed: 12/11/2022] Open
Abstract
Nicotinamide phosphoribosyltransferase (NAMPT) is a promising antitumor target. Novel NAMPT inhibitors with diverse chemotypes are highly desirable for development of antitumor agents. Using high throughput screening system targeting NAMPT on a chemical library of 30000 small-molecules, we found a non-fluorescent compound F671-0003 and a fluorescent compound M049-0244 with excellent in vitro activity (IC50: 85 nM and 170 nM respectively) and anti-proliferative activity against HepG2 cells. These two compounds significantly depleted cellular NAD levels. Exogenous NMN rescued their anti-proliferative activity against HepG2 cells. Structure-activity relationship study proposed a binding mode for NAMPT inhibitor F671-0003 and highlighted the importance of hydrogen bonding, hydrophobic and π-π interactions in inhibitor binding. Imaging study provided the evidence that fluorescent compound M049-0244 (3 μM) significantly stained living HepG2 cells. Cellular fluorescence was further verified to be NAMPT dependent by using RNA interference and NAMPT over expression transgenic mice. Our findings provide novel antitumor lead compounds and a "first-in-class" fluorescent probe for imaging NAMPT.
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Affiliation(s)
- Xia Wang
- Department of Pharmacology, Second Military Medical University, Shanghai, China
| | - Tian-Ying Xu
- Department of Pharmacology, Second Military Medical University, Shanghai, China
| | - Xin-Zhu Liu
- Department of Pharmacology, Second Military Medical University, Shanghai, China
| | - Sai-Long Zhang
- Department of Pharmacology, Second Military Medical University, Shanghai, China
| | - Pei Wang
- Department of Pharmacology, Second Military Medical University, Shanghai, China
| | - Zhi-Yong Li
- Department of Pharmacology, Second Military Medical University, Shanghai, China
| | - Yun-Feng Guan
- Department of Pharmacology, Second Military Medical University, Shanghai, China
| | - Shu-Na Wang
- Department of Pharmacology, Second Military Medical University, Shanghai, China
| | - Guo-Qiang Dong
- Department of Medicinal Chemistry, Second Military Medical University, Shanghai, China
| | - Shu Zhuo
- 1] Key Laboratory of Food Safety Research, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences. [2] Key Laboratory of Food Safety Risk Assessment, Ministry of Health, Beijing 100021, China
| | - Ying-Ying Le
- 1] Key Laboratory of Food Safety Research, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences. [2] Key Laboratory of Food Safety Risk Assessment, Ministry of Health, Beijing 100021, China
| | - Chun-Quan Sheng
- Department of Medicinal Chemistry, Second Military Medical University, Shanghai, China
| | - Chao-Yu Miao
- Department of Pharmacology, Second Military Medical University, Shanghai, China
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24
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Sampath D, Zabka TS, Misner DL, O’Brien T, Dragovich PS. Inhibition of nicotinamide phosphoribosyltransferase (NAMPT) as a therapeutic strategy in cancer. Pharmacol Ther 2015; 151:16-31. [DOI: 10.1016/j.pharmthera.2015.02.004] [Citation(s) in RCA: 162] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Accepted: 02/02/2015] [Indexed: 12/12/2022]
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Tan B, Dong S, Shepard RL, Kays L, Roth KD, Geeganage S, Kuo MS, Zhao G. Inhibition of Nicotinamide Phosphoribosyltransferase (NAMPT), an Enzyme Essential for NAD+ Biosynthesis, Leads to Altered Carbohydrate Metabolism in Cancer Cells. J Biol Chem 2015; 290:15812-15824. [PMID: 25944913 DOI: 10.1074/jbc.m114.632141] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Indexed: 12/18/2022] Open
Abstract
Nicotinamide phosphoribosyltransferase (NAMPT) has been extensively studied due to its essential role in NAD(+) biosynthesis in cancer cells and the prospect of developing novel therapeutics. To understand how NAMPT regulates cellular metabolism, we have shown that the treatment with FK866, a specific NAMPT inhibitor, leads to attenuation of glycolysis by blocking the glyceraldehyde 3-phosphate dehydrogenase step (Tan, B., Young, D. A., Lu, Z. H., Wang, T., Meier, T. I., Shepard, R. L., Roth, K., Zhai, Y., Huss, K., Kuo, M. S., Gillig, J., Parthasarathy, S., Burkholder, T. P., Smith, M. C., Geeganage, S., and Zhao, G. (2013) Pharmacological inhibition of nicotinamide phosphoribosyltransferase (NAMPT), an enzyme essential for NAD(+) biosynthesis, in human cancer cells: metabolic basis and potential clinical implications. J. Biol. Chem. 288, 3500-3511). Due to technical limitations, we failed to separate isotopomers of phosphorylated sugars. In this study, we developed an enabling LC-MS methodology. Using this, we confirmed the previous findings and also showed that NAMPT inhibition led to accumulation of fructose 1-phosphate and sedoheptulose 1-phosphate but not glucose 6-phosphate, fructose 6-phosphate, and sedoheptulose 7-phosphate as previously thought. To investigate the metabolic basis of the metabolite formation, we carried out biochemical and cellular studies and established the following. First, glucose-labeling studies indicated that fructose 1-phosphate was derived from dihydroxyacetone phosphate and glyceraldehyde, and sedoheptulose 1-phosphate was derived from dihydroxyacetone phosphate and erythrose via an aldolase reaction. Second, biochemical studies showed that aldolase indeed catalyzed these reactions. Third, glyceraldehyde- and erythrose-labeling studies showed increased incorporation of corresponding labels into fructose 1-phosphate and sedoheptulose 1-phosphate in FK866-treated cells. Fourth, NAMPT inhibition led to increased glyceraldehyde and erythrose levels in the cell. Finally, glucose-labeling studies showed accumulated fructose 1,6-bisphosphate in FK866-treated cells mainly derived from dihydroxyacetone phosphate and glyceraldehyde 3-phosphate. Taken together, this study shows that NAMPT inhibition leads to attenuation of glycolysis, resulting in further perturbation of carbohydrate metabolism in cancer cells. The potential clinical implications of these findings are also discussed.
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Affiliation(s)
- Bo Tan
- Discovery Chemistry, Lilly Research Laboratories, Eli Lilly and Co., Indianapolis, Indiana 46285
| | - Sucai Dong
- Cancer Research, Lilly Research Laboratories, Eli Lilly and Co., Indianapolis, Indiana 46285
| | - Robert L Shepard
- Cancer Research, Lilly Research Laboratories, Eli Lilly and Co., Indianapolis, Indiana 46285
| | - Lisa Kays
- Cancer Research, Lilly Research Laboratories, Eli Lilly and Co., Indianapolis, Indiana 46285
| | - Kenneth D Roth
- Discovery Chemistry, Lilly Research Laboratories, Eli Lilly and Co., Indianapolis, Indiana 46285
| | - Sandaruwan Geeganage
- Cancer Research, Lilly Research Laboratories, Eli Lilly and Co., Indianapolis, Indiana 46285
| | - Ming-Shang Kuo
- Discovery Chemistry, Lilly Research Laboratories, Eli Lilly and Co., Indianapolis, Indiana 46285.
| | - Genshi Zhao
- Cancer Research, Lilly Research Laboratories, Eli Lilly and Co., Indianapolis, Indiana 46285.
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Nenajdenko VG, Muzalevskiy VM, Shastin AV. Polyfluorinated ethanes as versatile fluorinated C2-building blocks for organic synthesis. Chem Rev 2015; 115:973-1050. [PMID: 25594605 DOI: 10.1021/cr500465n] [Citation(s) in RCA: 113] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Valentine G Nenajdenko
- Department of Chemistry, Moscow State University , Leninskie Gory, Moscow 119992, Russia
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27
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Zak M, Liederer BM, Sampath D, Yuen PW, Bair KW, Baumeister T, Buckmelter AJ, Clodfelter KH, Cheng E, Crocker L, Fu B, Han B, Li G, Ho YC, Lin J, Liu X, Ly J, O'Brien T, Reynolds DJ, Skelton N, Smith CC, Tay S, Wang W, Wang Z, Xiao Y, Zhang L, Zhao G, Zheng X, Dragovich PS. Identification of nicotinamide phosphoribosyltransferase (NAMPT) inhibitors with no evidence of CYP3A4 time-dependent inhibition and improved aqueous solubility. Bioorg Med Chem Lett 2014; 25:529-41. [PMID: 25556090 DOI: 10.1016/j.bmcl.2014.12.026] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Accepted: 12/09/2014] [Indexed: 10/24/2022]
Abstract
Herein we report the optimization efforts to ameliorate the potent CYP3A4 time-dependent inhibition (TDI) and low aqueous solubility exhibited by a previously identified lead compound from our NAMPT inhibitor program (1, GNE-617). Metabolite identification studies pinpointed the imidazopyridine moiety present in 1 as the likely source of the TDI signal, and replacement with other bicyclic systems was found to reduce or eliminate the TDI finding. A strategy of reducing the number of aromatic rings and/or lowering cLogD7.4 was then employed to significantly improve aqueous solubility. These efforts culminated in the discovery of 42, a compound with no evidence of TDI, improved aqueous solubility, and robust efficacy in tumor xenograft studies.
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Affiliation(s)
- Mark Zak
- Genentech Inc., 1 DNA Way, South San Francisco, CA 94080, USA.
| | | | - Deepak Sampath
- Genentech Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Po-Wai Yuen
- Pharmaron Beijing Co. Ltd, 6 Taihe Road, BDA, Beijing 100176, PR China
| | - Kenneth W Bair
- Forma Therapeutics Inc., 500 Arsenal Street, Watertown, MA 02472, USA
| | - Timm Baumeister
- Forma Therapeutics Inc., 500 Arsenal Street, Watertown, MA 02472, USA
| | | | - Karl H Clodfelter
- Forma Therapeutics Inc., 500 Arsenal Street, Watertown, MA 02472, USA
| | - Eric Cheng
- Genentech Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Lisa Crocker
- Genentech Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Bang Fu
- Pharmaron Beijing Co. Ltd, 6 Taihe Road, BDA, Beijing 100176, PR China
| | - Bingsong Han
- Forma Therapeutics Inc., 500 Arsenal Street, Watertown, MA 02472, USA
| | - Guangkun Li
- Pharmaron Beijing Co. Ltd, 6 Taihe Road, BDA, Beijing 100176, PR China
| | - Yen-Ching Ho
- Forma Therapeutics Inc., 500 Arsenal Street, Watertown, MA 02472, USA
| | - Jian Lin
- Forma Therapeutics Inc., 500 Arsenal Street, Watertown, MA 02472, USA
| | - Xiongcai Liu
- Pharmaron Beijing Co. Ltd, 6 Taihe Road, BDA, Beijing 100176, PR China
| | - Justin Ly
- Genentech Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Thomas O'Brien
- Genentech Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | | | | | - Chase C Smith
- Forma Therapeutics Inc., 500 Arsenal Street, Watertown, MA 02472, USA
| | - Suzanne Tay
- Genentech Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Weiru Wang
- Genentech Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Zhongguo Wang
- Forma Therapeutics Inc., 500 Arsenal Street, Watertown, MA 02472, USA
| | - Yang Xiao
- Genentech Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Lei Zhang
- Pharmaron Beijing Co. Ltd, 6 Taihe Road, BDA, Beijing 100176, PR China
| | - Guiling Zhao
- Genentech Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Xiaozhang Zheng
- Forma Therapeutics Inc., 500 Arsenal Street, Watertown, MA 02472, USA
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28
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Wang W, Elkins K, Oh A, Ho YC, Wu J, Li H, Xiao Y, Kwong M, Coons M, Brillantes B, Cheng E, Crocker L, Dragovich PS, Sampath D, Zheng X, Bair KW, O'Brien T, Belmont LD. Structural basis for resistance to diverse classes of NAMPT inhibitors. PLoS One 2014; 9:e109366. [PMID: 25285661 PMCID: PMC4186856 DOI: 10.1371/journal.pone.0109366] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2014] [Accepted: 09/08/2014] [Indexed: 01/07/2023] Open
Abstract
Inhibiting NAD biosynthesis by blocking the function of nicotinamide phosphoribosyl transferase (NAMPT) is an attractive therapeutic strategy for targeting tumor metabolism. However, the development of drug resistance commonly limits the efficacy of cancer therapeutics. This study identifies mutations in NAMPT that confer resistance to a novel NAMPT inhibitor, GNE-618, in cell culture and in vivo, thus demonstrating that the cytotoxicity of GNE-618 is on target. We determine the crystal structures of six NAMPT mutants in the apo form and in complex with various inhibitors and use cellular, biochemical and structural data to elucidate two resistance mechanisms. One is the surprising finding of allosteric modulation by mutation of residue Ser165, resulting in unwinding of an α-helix that binds the NAMPT substrate 5-phosphoribosyl-1-pyrophosphate (PRPP). The other mechanism is orthosteric blocking of inhibitor binding by mutations of Gly217. Furthermore, by evaluating a panel of diverse small molecule inhibitors, we unravel inhibitor structure activity relationships on the mutant enzymes. These results provide valuable insights into the design of next generation NAMPT inhibitors that offer improved therapeutic potential by evading certain mechanisms of resistance.
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Affiliation(s)
- Weiru Wang
- Genentech, Inc., South San Francisco, California, United States of America
| | - Kristi Elkins
- Genentech, Inc., South San Francisco, California, United States of America
| | - Angela Oh
- Genentech, Inc., South San Francisco, California, United States of America
| | - Yen-Ching Ho
- Forma Therapeutics, Inc., Watertown, Massachusetts, United States of America
| | - Jiansheng Wu
- Genentech, Inc., South San Francisco, California, United States of America
| | - Hong Li
- Genentech, Inc., South San Francisco, California, United States of America
| | - Yang Xiao
- Genentech, Inc., South San Francisco, California, United States of America
| | - Mandy Kwong
- Genentech, Inc., South San Francisco, California, United States of America
| | - Mary Coons
- Genentech, Inc., South San Francisco, California, United States of America
| | - Bobby Brillantes
- Genentech, Inc., South San Francisco, California, United States of America
| | - Eric Cheng
- Genentech, Inc., South San Francisco, California, United States of America
| | - Lisa Crocker
- Genentech, Inc., South San Francisco, California, United States of America
| | - Peter S. Dragovich
- Genentech, Inc., South San Francisco, California, United States of America
| | - Deepak Sampath
- Genentech, Inc., South San Francisco, California, United States of America
| | - Xiaozhang Zheng
- Forma Therapeutics, Inc., Watertown, Massachusetts, United States of America
| | - Kenneth W. Bair
- Forma Therapeutics, Inc., Watertown, Massachusetts, United States of America
| | - Thomas O'Brien
- Genentech, Inc., South San Francisco, California, United States of America
| | - Lisa D. Belmont
- Genentech, Inc., South San Francisco, California, United States of America
- * E-mail:
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