1
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Wang S, Huo Y, Zhang J, Li L, Cao F, Song Y, Zhang Y, Yang K. Design, synthesis, antitumor activity, and molecular dynamics simulations of novel sphingosine kinase 2 inhibitors. Bioorg Med Chem 2023; 93:117441. [PMID: 37586181 DOI: 10.1016/j.bmc.2023.117441] [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: 06/27/2023] [Revised: 08/06/2023] [Accepted: 08/08/2023] [Indexed: 08/18/2023]
Abstract
Targeting sphingosine kinase 2 (SphK2) has become a novel strategy for the treatment of cancer. However, potent and selective SphK2 inhibitors are rare. In our work, a series of novel SphK2 inhibitors were innovatively designed, synthesized and screened. Compound 12e showed the best inhibitory activity. Molecular dynamics simulations were carried out to analyze the detailed interactions between the SphK2 and its inhibitors. Moreover, 12e exhibited anti-proliferative activity in various cancer cells, and inhibited the migration of human breast cancer cells MCF-7.
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Affiliation(s)
- ShaSha Wang
- Key Laboratory of Pharmaceutical Quality Control of Hebei Province, College of Pharmaceutical Sciences, Hebei University, Baoding 071002, China
| | - Yidan Huo
- Key Laboratory of Pharmaceutical Quality Control of Hebei Province, College of Pharmaceutical Sciences, Hebei University, Baoding 071002, China
| | - Jinmiao Zhang
- Key Laboratory of Pharmaceutical Quality Control of Hebei Province, College of Pharmaceutical Sciences, Hebei University, Baoding 071002, China
| | - Longfei Li
- Key Laboratory of Pharmaceutical Quality Control of Hebei Province, College of Pharmaceutical Sciences, Hebei University, Baoding 071002, China
| | - Fei Cao
- Key Laboratory of Pharmaceutical Quality Control of Hebei Province, College of Pharmaceutical Sciences, Hebei University, Baoding 071002, China
| | - Yali Song
- Key Laboratory of Pharmaceutical Quality Control of Hebei Province, College of Pharmaceutical Sciences, Hebei University, Baoding 071002, China
| | - Yajing Zhang
- College of Pharmacy, Hebei University of Chinese Medicine, Shijiazhuang 050200, China.
| | - Kan Yang
- Key Laboratory of Pharmaceutical Quality Control of Hebei Province, College of Pharmaceutical Sciences, Hebei University, Baoding 071002, China.
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2
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Fritzemeier R, Foster D, Peralta A, Payette M, Kharel Y, Huang T, Lynch KR, Santos WL. Discovery of In Vivo Active Sphingosine-1-phosphate Transporter (Spns2) Inhibitors. J Med Chem 2022; 65:7656-7681. [PMID: 35609189 PMCID: PMC9733493 DOI: 10.1021/acs.jmedchem.1c02171] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Sphingosine 1-phosphate (S1P) is a pleiotropic signaling molecule that interacts with five G-protein-coupled receptors (S1P1-5) to regulate cellular signaling pathways. S1P export is facilitated by Mfsd2b and spinster homologue 2 (Spns2). While mouse genetic studies suggest that Spns2 functions to maintain lymph S1P, Spns2 inhibitors are necessary to understand its biology and to learn whether Spns2 is a viable drug target. Herein, we report a structure-activity relationship study that identified the first Spns2 inhibitor 16d (SLF1081851). In vitro studies in HeLa cells demonstrated that 16d inhibited S1P release with an IC50 of 1.93 μM. Administration of 16d to mice and rats drove significant decreases in circulating lymphocyte counts and plasma S1P concentrations, recapitulating the phenotype observed in mice made deficient in Spns2. Thus, 16d has the potential for development and use as a probe to investigate Spns2 biology and to determine the potential of Spns2 as a drug target.
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Affiliation(s)
- Russell Fritzemeier
- Department of Chemistry, Virginia Tech, Blacksburg, Virginia 24060, United States
| | - Daniel Foster
- Department of Chemistry, Virginia Tech, Blacksburg, Virginia 24060, United States
| | - Ashley Peralta
- Department of Chemistry, Virginia Tech, Blacksburg, Virginia 24060, United States
| | - Michael Payette
- Department of Chemistry, Virginia Tech, Blacksburg, Virginia 24060, United States
| | - Yugesh Kharel
- Department of Pharmacology, University of Virginia, Charlottesville, Virginia 22908, United States
| | - Tao Huang
- Department of Pharmacology, University of Virginia, Charlottesville, Virginia 22908, United States
| | - Kevin R Lynch
- Department of Pharmacology, University of Virginia, Charlottesville, Virginia 22908, United States
| | - Webster L Santos
- Department of Chemistry, Virginia Tech, Blacksburg, Virginia 24060, United States
- Virginia Tech Center for Drug Discovery, Virginia Tech, Blacksburg, Virginia 24060, United States
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3
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Revealing 2-Dimethylhydrazino-2-alkyl alkynyl sphingosine derivatives as Sphingosine Kinase 2 inhibitors: some hints on the structural basis for selective inhibition. Bioorg Chem 2022; 121:105668. [DOI: 10.1016/j.bioorg.2022.105668] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 02/02/2022] [Accepted: 02/07/2022] [Indexed: 12/29/2022]
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4
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Congdon M, Fritzemeier RG, Kharel Y, Brown AM, Serbulea V, Bevan DR, Lynch KR, Santos WL. Probing the substitution pattern of indole-based scaffold reveals potent and selective sphingosine kinase 2 inhibitors. Eur J Med Chem 2020; 212:113121. [PMID: 33445156 DOI: 10.1016/j.ejmech.2020.113121] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Revised: 12/16/2020] [Accepted: 12/18/2020] [Indexed: 01/07/2023]
Abstract
Elevated levels of sphingosine 1-phosphate (S1P) and increased expression of sphingosine kinase isoforms (SphK1 and SphK2) have been implicated in a variety of disease states including cancer, inflammation, and autoimmunity. Consequently, the S1P signaling axis has become an attractive target for drug discovery. Selective inhibition of either SphK1 or SphK2 has been demonstrated to be effective in modulating S1P levels in animal models. While SphK1 inhibitors have received much attention, the development of potent and selective SphK2 inhibitors are emerging. Previously, our group reported a SphK2 naphthalene-based selective inhibitor, SLC5081308, which displays approximately 7-fold selectivity for hSphK2 over hSphK1 and has a SphK2 Ki value of 1.0 μM. To improve SphK2 potency and selectivity, we designed, synthesized, and evaluated a series of indole-based compounds derived from SLC5081308. After investigating substitution patterns around the indole ring, we discovered that 1,5-disubstitution promoted optimal binding in the SphK2 substrate binding site and subsequent inhibition of enzymatic activity. Our studies led to the identification of SLC5101465 (6r, SphK2 Ki = 90 nM, >110 fold selective for SphK2 over SphK1). Molecular modeling studies revealed key nonpolar interactions with Val308, Phe548, His556, and Cys533 and hydrogen bonds with both Asp211 and Asp308 as responsible for the high SphK2 inhibition and selectivity.
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Affiliation(s)
- Molly Congdon
- Department of Chemistry, Virginia Tech, Blacksburg, VA, 24061, United States; Virginia Tech Center for Drug Discovery, Virginia Tech, Blacksburg, VA, 24061, United States
| | - Russell G Fritzemeier
- Department of Chemistry, Virginia Tech, Blacksburg, VA, 24061, United States; Virginia Tech Center for Drug Discovery, Virginia Tech, Blacksburg, VA, 24061, United States
| | - Yugesh Kharel
- Department of Pharmacology, University of Virginia, Charlottesville, VA, 22908, United States
| | - Anne M Brown
- Virginia Tech Center for Drug Discovery, Virginia Tech, Blacksburg, VA, 24061, United States; Department of Biochemistry, Virginia Tech, Blacksburg, VA, 24061, United States; Research and Informatics, University Libraries, Virginia Tech, Blacksburg, VA, 24061, United States
| | - Vlad Serbulea
- Department of Pharmacology, University of Virginia, Charlottesville, VA, 22908, United States
| | - David R Bevan
- Virginia Tech Center for Drug Discovery, Virginia Tech, Blacksburg, VA, 24061, United States; Department of Biochemistry, Virginia Tech, Blacksburg, VA, 24061, United States
| | - Kevin R Lynch
- Department of Pharmacology, University of Virginia, Charlottesville, VA, 22908, United States
| | - Webster L Santos
- Department of Chemistry, Virginia Tech, Blacksburg, VA, 24061, United States; Virginia Tech Center for Drug Discovery, Virginia Tech, Blacksburg, VA, 24061, United States.
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5
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Sibley CD, Morris EA, Kharel Y, Brown AM, Huang T, Bevan DR, Lynch KR, Santos WL. Discovery of a Small Side Cavity in Sphingosine Kinase 2 that Enhances Inhibitor Potency and Selectivity. J Med Chem 2020; 63:1178-1198. [PMID: 31895563 DOI: 10.1021/acs.jmedchem.9b01508] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The sphingosine-1-phosphate (S1P) signaling pathway is an attractive drug target due to its involvement in immune cell chemotaxis and vascular integrity. The formation of S1P is catalyzed by sphingosine kinase 1 or 2 (SphK1 or SphK2) from sphingosine (Sph) and ATP. Inhibition of SphK1 and SphK2 to attenuate levels of S1P has been reported to be efficacious in animal models of diseases such as cancer, sickle cell disease, and renal fibrosis. While inhibitors of both SphKs have been reported, improvements in potency and selectivity are still needed. Toward that end, we performed structure-activity relationship profiling of 8 (SLM6031434) and discovered a heretofore unrecognized side cavity that increased inhibitor potency toward SphK2. Interrogating this region revealed that relatively small hydrophobic moieties are preferred, with 10 being the most potent SphK2-selective inhibitor (Ki = 89 nM, 73-fold SphK2-selective) with validated in vivo activity.
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Affiliation(s)
- Christopher D Sibley
- Department of Chemistry , Virginia Tech , Blacksburg , Virginia 24061 , United States
| | - Emily A Morris
- Department of Chemistry , Virginia Tech , Blacksburg , Virginia 24061 , United States
| | - Yugesh Kharel
- Department of Pharmacology , University of Virginia , Charlottesville , Virginia 22908 , United States
| | - Anne M Brown
- Department of Biochemistry , Virginia Tech , Blacksburg , Virginia 24061 , United States.,Virginia Tech Center for Drug Discovery , Virginia Tech , Blacksburg , Virginia 24061 , United States
| | - Tao Huang
- Department of Pharmacology , University of Virginia , Charlottesville , Virginia 22908 , United States
| | - David R Bevan
- Department of Biochemistry , Virginia Tech , Blacksburg , Virginia 24061 , United States.,Virginia Tech Center for Drug Discovery , Virginia Tech , Blacksburg , Virginia 24061 , United States
| | - Kevin R Lynch
- Department of Pharmacology , University of Virginia , Charlottesville , Virginia 22908 , United States
| | - Webster L Santos
- Department of Chemistry , Virginia Tech , Blacksburg , Virginia 24061 , United States.,Virginia Tech Center for Drug Discovery , Virginia Tech , Blacksburg , Virginia 24061 , United States
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6
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Hosseini ST, Raissi H, Pakdel M. High-performance carbon dioxide capture and storage by multi-functional sphingosine kinase inhibitors through a CO2-philic membrane. NEW J CHEM 2020. [DOI: 10.1039/d0nj01231a] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Carbon dioxide (CO2) capture using environmentally friendly sphingosine-based materials was theoretically studied.
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Affiliation(s)
| | - Heidar Raissi
- Department of Chemistry
- Faculty of Science
- University of Birjand
- Birjand
- Iran
| | - Majid Pakdel
- Department of Chemistry
- Faculty of Science
- University of Birjand
- Birjand
- Iran
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7
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Abstract
There is substantial evidence that the enzymes, sphingosine kinase 1 and 2, which catalyse the formation of the bioactive lipid sphingosine 1-phosphate, are involved in pathophysiological processes. In this chapter, we appraise the evidence that both enzymes are druggable and describe how isoform-specific inhibitors can be developed based on the plasticity of the sphingosine-binding site. This is contextualised with the effect of sphingosine kinase inhibitors in cancer, pulmonary hypertension, neurodegeneration, inflammation and sickling.
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Affiliation(s)
- Susan Pyne
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde , Glasgow, Scotland, UK
| | - David R Adams
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh, Scotland, UK
| | - Nigel J Pyne
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde , Glasgow, Scotland, UK.
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8
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Kim SW, Lee T, Oh YS, Shin SM, Lee JY, Kim S, Baek DJ, Park EY. Synthesis and Biological Evaluation of PF-543 Derivative Containing Aliphatic Side Chain. Chem Pharm Bull (Tokyo) 2019; 67:599-603. [PMID: 31155566 DOI: 10.1248/cpb.c18-00724] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The PF-543 is known as a potent and selective inhibitor of sphingosine kinase (SK) 1 amongst all the SK inhibitors known to date. In a recently reported study by Pfizer on the synthesis of PF-543 derivatives and the SK inhibitory effects, the introduction of propyl moiety into sulfonyl group of PF-543 in the case of 26b revealed an excellent result of 1.7 nM of IC50 of SK1, suggesting the potential substitution of chain structure for benzenesulfonyl structure. In the present work, we aimed for identification of antitumor activity and inhibitory effects of PF-543 derivative containing aliphatic long chain (similar to known SK inhibitors) on SK1. The synthesized compound 2 exhibited an inhibitory effect on SK1 in a manner similar to that of PF-543; the PF-543 derivative manifested similar antitumor activity on HT29, HCT116 (colorectal cancer cell line), and AGS (gastric cancer cell line) cells. Also, from the docking study conducted with PF-543 and compound 2, it was apparent that the aliphatic chain in compound 2 could probably replace benzenesulfonyl structure of PF-543.
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Affiliation(s)
- Seon Woong Kim
- College of Pharmacy and Natural Medicine Research Institute, Mokpo National University
| | - Taeho Lee
- College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University
| | - Yoon Sin Oh
- Department of Food and Nutrition, Eulji University
| | | | - Joo-Youn Lee
- College of Pharmacy, Seoul National University.,Korea Chemical Bank, Korea Research Institute of Chemical Technology
| | - Sanghee Kim
- College of Pharmacy, Seoul National University
| | - Dong Jae Baek
- College of Pharmacy and Natural Medicine Research Institute, Mokpo National University
| | - Eun-Young Park
- College of Pharmacy and Natural Medicine Research Institute, Mokpo National University
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9
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Hasanifard L, Sheervalilou R, Majidinia M, Yousefi B. New insights into the roles and regulation of SphK2 as a therapeutic target in cancer chemoresistance. J Cell Physiol 2018; 234:8162-8181. [PMID: 30456838 DOI: 10.1002/jcp.27612] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Accepted: 09/24/2018] [Indexed: 12/21/2022]
Abstract
Chemoresistance is a complicated process developed by most cancers and accounts for the majority of relapse and metastasis in cancer. The main mechanisms of chemoresistance phenotype include increased expression and/or activated drug efflux pumps, altered DNA repair, altered metabolism of therapeutics as well as impaired apoptotic signaling pathways. Aberrant sphingolipid signaling has also recently received considerable attention in chemoresistance. Sphingolipid metabolites regulate main biological processes such as apoptosis, cell survival, proliferation, and differentiation. Two sphingosine kinases, SphK1 and SphK2, convert sphingosine to sphingosine-1-phosphate, an antiapoptotic bioactive lipid mediator. Numerous evidence has revealed the involvement of activated SphK1 in tumorigenesis and resistance, however, contradictory results have been found for the role of SphK2 in these functions. In some studies, overexpression of SphK2 suppressed cell growth and induced apoptosis. In contrast, some others have shown cell proliferation and tumor promotion effect for SphK2. Our understanding of the role of SphK2 in cancer does not have a sufficient integrity. The main focus of this review will be on the re-evaluation of the role of SphK2 in cell death and chemoresistance in light of our new understanding of molecular targeted therapy. We will also highlight the connections between SphK2 and the DNA damage response. Finally, we will provide our insight into the regulatory mechanisms of SphKs by two main categories, micro and long, noncoding RNAs as the novel players of cancer chemoresistance.
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Affiliation(s)
- Leili Hasanifard
- Department of Clinical Biochemistry, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Roghayeh Sheervalilou
- Molecular Medicine Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Maryam Majidinia
- Solid Tumor Research Center, Urmia University of Medical Sciences, Urmia, Iran
| | - Bahman Yousefi
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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10
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Cao M, Ji C, Zhou Y, Huang W, Ni W, Tong X, Wei JF. Sphingosine kinase inhibitors: A patent review. Int J Mol Med 2018; 41:2450-2460. [PMID: 29484372 DOI: 10.3892/ijmm.2018.3505] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Accepted: 01/30/2018] [Indexed: 11/05/2022] Open
Abstract
Sphingosine kinases (SphKs) catalyze the conversion of the sphingosine to the promitogenic/migratory product, sphingosine-1-phosphate (S1P). SphK/S1P pathway has been linked to the progression of cancer and various other diseases including allergic inflammatory disease, cardiovascular diseases, rejection after transplantation, the central nervous system, and virus infections. Therefore, SphKs represent potential new targets for developing novel therapeutics for these diseases. The history and development of SphK inhibitors are discussed, summarizing SphK inhibitors by their structures, and describing some applications of SphK inhibitors. We concluded: i) initial SphK inhibitors based on sphingosine have low specificity with several important off-targets. Identification the off-targets that would work synergistically with SphKs, and developing compounds that target the unique C4 domain of SphKs should be the focus of future studies. ii) The modifications of SphK inhibitors, which are devoted to increasing the selectivity to one of the two isoforms, now focus on the alkyl length, the spacer between the head and linker rings, and the insertion and the position of lipidic group in tail region. iii) SphK/S1P signaling pathway holds therapeutic values for many diseases. To find the exact function of each isoform of SphKs increasing the number of SphK inhibitor clinical trials is necessary.
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Affiliation(s)
- Mengda Cao
- Department of Geriatrics, Beijing Hospital, National Center of Gerontology, Dongcheng, Beijing 100730, P.R. China
| | - Chunmei Ji
- Research Division of Clinical Pharmacology, Τhe First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Yanjun Zhou
- Research Division of Clinical Pharmacology, Τhe First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Wen Huang
- Research Division of Clinical Pharmacology, Τhe First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Weiwei Ni
- Research Division of Clinical Pharmacology, Τhe First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Xunliang Tong
- Department of Geriatrics, Beijing Hospital, National Center of Gerontology, Dongcheng, Beijing 100730, P.R. China
| | - Ji-Fu Wei
- Research Division of Clinical Pharmacology, Τhe First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
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11
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Childress ES, Kharel Y, Brown AM, Bevan DR, Lynch KR, Santos WL. Transforming Sphingosine Kinase 1 Inhibitors into Dual and Sphingosine Kinase 2 Selective Inhibitors: Design, Synthesis, and in Vivo Activity. J Med Chem 2017; 60:3933-3957. [PMID: 28406646 PMCID: PMC6047346 DOI: 10.1021/acs.jmedchem.7b00233] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Sphingosine 1-phosphate (S1P) is a pleiotropic signaling molecule that interacts with its five G-protein coupled receptors (S1P1-5) to regulate cell growth and survival and has been implicated in a variety of diseases including cancer and sickle cell disease. As the key mediators in the synthesis of S1P, sphingosine kinase (SphK) isoforms 1 and 2 have attracted attention as viable targets for pharmaceutical inhibition. In this article, we describe the design, synthesis, and biological evaluation of aminothiazole-based guanidine inhibitors of SphK. Surprisingly, combining features of reported SphK1 inhibitors generated SphK1/2 dual inhibitor 20l (SLC4011540) (hSphK1 Ki = 120 nM, hSphK2 Ki = 90 nM) and SphK2 inhibitor 20dd (SLC4101431) (Ki = 90 nM, 100-fold SphK2 selectivity). These compounds effectively decrease S1P levels in vitro. In vivo administration of 20dd validated that inhibition of SphK2 increases blood S1P levels.
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Affiliation(s)
- Elizabeth S. Childress
- Department of Chemistry and VT Center for Drug Discovery, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Yugesh Kharel
- Department of Pharmacology, University of Virginia, Charlottesville, Virginia 22908, United States
| | - Anne M. Brown
- Department of Biochemistry, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - David R. Bevan
- Department of Biochemistry, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Kevin R. Lynch
- Department of Pharmacology, University of Virginia, Charlottesville, Virginia 22908, United States
| | - Webster L. Santos
- Department of Chemistry and VT Center for Drug Discovery, Virginia Tech, Blacksburg, Virginia 24061, United States
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12
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Pitman MR, Costabile M, Pitson SM. Recent advances in the development of sphingosine kinase inhibitors. Cell Signal 2016; 28:1349-1363. [DOI: 10.1016/j.cellsig.2016.06.007] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Revised: 06/09/2016] [Accepted: 06/09/2016] [Indexed: 12/11/2022]
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13
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Pyne S, Adams DR, Pyne NJ. Sphingosine 1-phosphate and sphingosine kinases in health and disease: Recent advances. Prog Lipid Res 2016; 62:93-106. [PMID: 26970273 DOI: 10.1016/j.plipres.2016.03.001] [Citation(s) in RCA: 141] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Revised: 03/07/2016] [Accepted: 03/08/2016] [Indexed: 12/24/2022]
Abstract
Sphingosine kinases (isoforms SK1 and SK2) catalyse the formation of a bioactive lipid, sphingosine 1-phosphate (S1P). S1P is a well-established ligand of a family of five S1P-specific G protein coupled receptors but also has intracellular signalling roles. There is substantial evidence to support a role for sphingosine kinases and S1P in health and disease. This review summarises recent advances in the area in relation to receptor-mediated signalling by S1P and novel intracellular targets of this lipid. New evidence for a role of each sphingosine kinase isoform in cancer, the cardiovascular system, central nervous system, inflammation and diabetes is discussed. There is continued research to develop isoform selective SK inhibitors, summarised here. Analysis of the crystal structure of SK1 with the SK1-selective inhibitor, PF-543, is used to identify residues that could be exploited to improve selectivity in SK inhibitor development for future therapeutic application.
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Affiliation(s)
- Susan Pyne
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral St, Glasgow, G4 0RE, Scotland, UK.
| | - David R Adams
- School of Engineering & Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, Scotland, UK.
| | - Nigel J Pyne
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral St, Glasgow, G4 0RE, Scotland, UK.
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14
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Congdon MD, Kharel Y, Brown AM, Lewis SN, Bevan DR, Lynch KR, Santos WL. Structure-Activity Relationship Studies and Molecular Modeling of Naphthalene-Based Sphingosine Kinase 2 Inhibitors. ACS Med Chem Lett 2016; 7:229-34. [PMID: 26985306 DOI: 10.1021/acsmedchemlett.5b00304] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Accepted: 02/02/2016] [Indexed: 12/26/2022] Open
Abstract
The two isoforms of sphingosine kinase (SphK1 and SphK2) are the only enzymes that phosphorylate sphingosine to sphingosine-1-phosphate (S1P), which is a pleiotropic lipid mediator involved in a broad range of cellular processes including migration, proliferation, and inflammation. SphKs are targets for various diseases such as cancer, fibrosis, and Alzheimer's and sickle cell disease. Herein, we disclose the structure-activity profile of naphthalene-containing SphK inhibitors and molecular modeling studies that reveal a key molecular switch that controls SphK selectivity.
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Affiliation(s)
- Molly D. Congdon
- Department
of Chemistry, ‡Department of Biochemistry, and §Virginia Tech Center for Drug Discovery, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Yugesh Kharel
- Department
of Pharmacology, University of Virginia, Charlottesville, Virginia 22908, United States
| | | | | | | | - Kevin R. Lynch
- Department
of Pharmacology, University of Virginia, Charlottesville, Virginia 22908, United States
| | - Webster L. Santos
- Department
of Chemistry, ‡Department of Biochemistry, and §Virginia Tech Center for Drug Discovery, Virginia Tech, Blacksburg, Virginia 24061, United States
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