1
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Systematic asymmetric analog synthesis of fluspidine, a σ1 receptor ligand, to improve ligand affinity. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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2
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Zhang X, Wang B, Liu Z, Zhou Y, Du L. How to Fluorescently Label the Potassium Channel: A Case in hERG. Curr Med Chem 2020; 27:3046-3054. [DOI: 10.2174/0929867326666181129094455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 11/13/2018] [Accepted: 11/22/2018] [Indexed: 11/22/2022]
Abstract
hERG (Human ether-a-go-go-related gene) potassium channel, which plays an essential
role in cardiac action potential repolarization, is responsible for inherited and druginduced
long QT syndrome. Recently, the Cryo-EM structure capturing the open conformation
of hERG channel was determined, thus pushing the study on hERG channel at 3.8 Å
resolution. This report focuses primarily on summarizing the design rationale and application
of several fluorescent probes that target hERG channels, which enables dynamic and real-time
monitoring of potassium pore channel affinity to further advance the understanding of the
channels.
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Affiliation(s)
- Xiaomeng Zhang
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (MOE), School of Pharmacy, Shandong University, Jinan, Shandong 250012, China
| | - Beilei Wang
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (MOE), School of Pharmacy, Shandong University, Jinan, Shandong 250012, China
| | - Zhenzhen Liu
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (MOE), School of Pharmacy, Shandong University, Jinan, Shandong 250012, China
| | - Yubin Zhou
- Institute of Biosciences and Technology, College of Medicine, Texas A&M University, Houston, TX 77030, United States
| | - Lupei Du
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (MOE), School of Pharmacy, Shandong University, Jinan, Shandong 250012, China
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3
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Qin X, Ma Z, Yang X, Hu S, Chen X, Liang D, Lin Y, Shi X, Du L, Li M. Discovery of Environment-Sensitive Fluorescent Agonists for α1-Adrenergic Receptors. Anal Chem 2019; 91:12173-12180. [DOI: 10.1021/acs.analchem.9b01059] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Xiaojun Qin
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (MOE), School of Pharmacy, Shandong University, Jinan, Shandong 250012, China
| | - Zhao Ma
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (MOE), School of Pharmacy, Shandong University, Jinan, Shandong 250012, China
- Department of Biochemistry and Molecular Medicine, UC Davis Comprehensive Cancer Center, University of California, Davis, Sacramento, California 95817, United States
| | - Xingye Yang
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (MOE), School of Pharmacy, Shandong University, Jinan, Shandong 250012, China
| | - Shilong Hu
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (MOE), School of Pharmacy, Shandong University, Jinan, Shandong 250012, China
| | - Xinxin Chen
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (MOE), School of Pharmacy, Shandong University, Jinan, Shandong 250012, China
| | - Dong Liang
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (MOE), School of Pharmacy, Shandong University, Jinan, Shandong 250012, China
| | - Yuxing Lin
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (MOE), School of Pharmacy, Shandong University, Jinan, Shandong 250012, China
| | - Xiaodong Shi
- Department of Chemistry, University of South Florida, Tampa, Florida 33620, United States
| | - Lupei Du
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (MOE), School of Pharmacy, Shandong University, Jinan, Shandong 250012, China
| | - Minyong Li
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (MOE), School of Pharmacy, Shandong University, Jinan, Shandong 250012, China
- State Key Laboratory of Microbial Technology, Shandong University, Jinan, Shandong 250100, China
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4
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Jackson WF. K V channels and the regulation of vascular smooth muscle tone. Microcirculation 2018; 25. [PMID: 28985443 DOI: 10.1111/micc.12421] [Citation(s) in RCA: 89] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Accepted: 10/01/2017] [Indexed: 12/31/2022]
Abstract
VSMCs in resistance arteries and arterioles express a diverse array of KV channels with members of the KV 1, KV 2 and KV 7 families being particularly important. Members of the KV channel family: (i) are highly expressed in VSMCs; (ii) are active at the resting membrane potential of VSMCs in vivo (-45 to -30 mV); (iii) contribute to the negative feedback regulation of VSMC membrane potential and myogenic tone; (iv) are activated by cAMP-related vasodilators, hydrogen sulfide and hydrogen peroxide; (v) are inhibited by increases in intracellular Ca2+ and vasoconstrictors that signal through Gq -coupled receptors; (vi) are involved in the proliferative phenotype of VSMCs; and (vii) are modulated by diseases such as hypertension, obesity, the metabolic syndrome and diabetes. Thus, KV channels participate in every aspect of the regulation of VSMC function in both health and disease.
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Affiliation(s)
- William F Jackson
- Department of Pharmacology & Toxicology, Michigan State University, East Lansing, MI, USA
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5
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Lee ECY, Steeno G, Wassermann AM, Zhang L, Shah F, Price DA. Amine promiscuity and toxicology analysis. Bioorg Med Chem Lett 2016; 27:653-657. [PMID: 28011216 DOI: 10.1016/j.bmcl.2016.11.085] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Revised: 11/27/2016] [Accepted: 11/28/2016] [Indexed: 12/22/2022]
Abstract
Drug discovery programs often face challenges to obtain sufficient duration of action of the drug (i.e. seek longer half-lives). If the pharmacodynamic response is driven by free plasma concentration of the drug then extending the plasma drug concentration is a valid approach. Half-life is dependent on the volume of distribution, which in turn can be dependent upon the ionization state of the molecule. Basic compounds tend to have a higher volume of distribution leading to longer half-lives. However, it has been shown that bases may also have higher promiscuity. In this work, we describe an analysis of in vitro pharmacological profiling and toxicology data investigating the role of primary, secondary, and tertiary amines in imparting promiscuity and thus off-target toxicity. Primary amines are found to be less promiscuous in in vitro assays and have improved profiles in in vivo toxicology studies compared to secondary and tertiary amines.
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Affiliation(s)
- Esther C Y Lee
- Medicine Design, Pfizer Worldwide Research & Development, Cambridge, MA 02139, United States.
| | - Gregory Steeno
- Research Statistics, Pfizer Worldwide Research & Development, Groton, CT 06340, United States
| | | | - Liying Zhang
- Computational Sciences, Pfizer Worldwide Research & Development, Cambridge, MA 02139, United States
| | - Falgun Shah
- Computational Sciences, Pfizer Worldwide Research & Development, Cambridge, MA 02139, United States
| | - David A Price
- Medicine Design, Pfizer Worldwide Research & Development, Cambridge, MA 02139, United States
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6
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Didziapetris R, Lanevskij K. Compilation and physicochemical classification analysis of a diverse hERG inhibition database. J Comput Aided Mol Des 2016; 30:1175-1188. [DOI: 10.1007/s10822-016-9986-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2016] [Accepted: 10/21/2016] [Indexed: 10/20/2022]
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7
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Liu Z, Jiang T, Wang B, Ke B, Zhou Y, Du L, Li M. Environment-Sensitive Fluorescent Probe for the Human Ether-a-go-go-Related Gene Potassium Channel. Anal Chem 2016; 88:1511-5. [PMID: 26730746 PMCID: PMC4741275 DOI: 10.1021/acs.analchem.5b04220] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
![]()
A novel
environment-sensitive probe S2 with turn-on switch for
Human Ether-a-go-go-Related Gene (hERG) potassium channel was developed
herein. After careful evaluation, this fluorescent probe showed high
binding affinity with hERG potassium channel with an IC50 value of 41.65 nM and can be well applied to hERG channel imaging
or cellular distribution study for hERG channel blockers. Compared
with other imaging techniques, such as immunofluorescence and fluorescent
protein-based approaches, this method is convenient and affordable,
especially since a washing procedure is not needed. Meanwhile, this
environment-sensitive turn-on design strategy may provide a good example
for the probe development for these targets that have no reactive
or catalytic activity.
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Affiliation(s)
- Zhenzhen Liu
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (MOE), School of Pharmacy, Shandong University , Jinan, Shandong 250012, China
| | - Tianyu Jiang
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (MOE), School of Pharmacy, Shandong University , Jinan, Shandong 250012, China
| | - Beilei Wang
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (MOE), School of Pharmacy, Shandong University , Jinan, Shandong 250012, China
| | - Bowen Ke
- Laboratory of Anaesthesiology and Critical Care Medicine, West China Hospital, Sichuan University , Chengdu, Sichuan 610041, China
| | - Yubin Zhou
- Institute of Biosciences and Technology, Texas A&M University Health Science Center , Houston, Texas 77030, United States
| | - Lupei Du
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (MOE), School of Pharmacy, Shandong University , Jinan, Shandong 250012, China
| | - Minyong Li
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (MOE), School of Pharmacy, Shandong University , Jinan, Shandong 250012, China
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8
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Liu Z, Zhou Y, Du L, Li M. Novel intramolecular photoinduced electron transfer-based probe for the Human Ether-a-go-go-Related Gene (hERG) potassium channel. Analyst 2015; 140:8101-8. [PMID: 26526230 PMCID: PMC4658274 DOI: 10.1039/c5an01974e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Drug induced long QT syndrome is a high risk event in clinic, which mainly results from their high affinity to the Human Ether-a-go-go-Related Gene (hERG) potassium channel. Therefore, evaluation of the drug's inhibitory activity against the hERG potassium channel is a required step in drug discovery and development. In this study, we developed a series of novel conformation-mediated intramolecular photoinduced electron transfer fluorogenic probes for the hERG potassium channel. After careful evaluation, probes N4 and N6 showed good activity and may have a promising application in the cell-based hERG potassium channel inhibitory activity assay, as well as potential hERG-associated cardiotoxicity evaluation. Compared with other assay methods, such as patch clamp assay, radio-ligand competitive binding assay, fluorescence polarization and potential-sensitive fluorescent probes, this method is convenient and can also selectively measure the inhibitory activity in the native state of the hERG potassium channel. Meanwhile, these probes can also be used for hERG potassium channel imaging without complex washing steps.
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Affiliation(s)
- Zhenzhen Liu
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology of Natural Products (MOE), School of Pharmacy, Shandong University, Jinan, Shandong 250012, China.
| | - Yubin Zhou
- Institute of Biosciences & Technology, Texas A&M University Health Science Center, Houston, TX 77030, USA
| | - Lupei Du
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology of Natural Products (MOE), School of Pharmacy, Shandong University, Jinan, Shandong 250012, China.
| | - Minyong Li
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology of Natural Products (MOE), School of Pharmacy, Shandong University, Jinan, Shandong 250012, China.
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9
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Zhang H, Wu Q, Berezin MY. Fluorescence anisotropy (polarization): from drug screening to precision medicine. Expert Opin Drug Discov 2015; 10:1145-61. [PMID: 26289575 DOI: 10.1517/17460441.2015.1075001] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
INTRODUCTION Fluorescence anisotropy (FA) is one of the major established methods accepted by industry and regulatory agencies for understanding the mechanisms of drug action and selecting drug candidates utilizing a high-throughput format. AREAS COVERED This review covers the basics of FA and complementary methods, such as fluorescence lifetime anisotropy and their roles in the drug discovery process. The authors highlight the factors affecting FA readouts, fluorophore selection and instrumentation. Furthermore, the authors describe the recent development of a successful, commercially valuable FA assay for long QT syndrome drug toxicity to illustrate the role that FA can play in the early stages of drug discovery. EXPERT OPINION Despite the success in drug discovery, the FA-based technique experiences competitive pressure from other homogeneous assays. That being said, FA is an established yet rapidly developing technique, recognized by academic institutions, the pharmaceutical industry and regulatory agencies across the globe. The technical problems encountered in working with small molecules in homogeneous assays are largely solved, and new challenges come from more complex biological molecules and nanoparticles. With that, FA will remain one of the major work-horse techniques leading to precision (personalized) medicine.
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Affiliation(s)
- Hairong Zhang
- a 1 Washington University School of Medicine, Department of Radiology , St. Louis 63110, USA
| | - Qian Wu
- a 1 Washington University School of Medicine, Department of Radiology , St. Louis 63110, USA
| | - Mikhail Y Berezin
- a 1 Washington University School of Medicine, Department of Radiology , St. Louis 63110, USA.,b 2 Washington University School of Medicine, Institute of Materials Science and Engineering, Department of Radiology , 510 S. Kingshighway, Barnard Bldg, 6th floor, 6604A, St. Louis, MO, USA +1 314 747 0701 ; +1 314 747 5191 ;
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10
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Liu Z, Wang B, Ma Z, Zhou Y, Du L, Li M. Fluorogenic probe for the human Ether-a-Go-Go-Related Gene potassium channel imaging. Anal Chem 2015; 87:2550-4. [PMID: 25665091 PMCID: PMC4374661 DOI: 10.1021/ac504763b] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
![]()
The
first small-molecule fluorogenic probe A1 for imaging the human Ether-a-go-go-Related
Gene (hERG) potassium channel based on the photoinduced electron transfer
(PET) off–on mechanism was described herein. After careful
biological evaluation, this probe had the potential of detecting and
imaging the hERG channel at the molecular and cellular level. Moreover,
the competitive binding mechanism of this probe would presumably minimize
the effects on the electrophysiological properties of the hERG channel.
Therefore, this probe may serve as a powerful toolkit to the hERG-associated
study.
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Affiliation(s)
- Zhenzhen Liu
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (MOE), School of Pharmacy, Shandong University , Jinan, Shandong 250012, China
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11
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Townsend C, Brown BS. Predicting drug-induced QT prolongation and torsades de pointes: a review of preclinical endpoint measures. ACTA ACUST UNITED AC 2013; Chapter 10:Unit 10.16. [PMID: 23744708 DOI: 10.1002/0471141755.ph1016s61] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Compound-induced prolongation of the cardiac QT interval is a major concern in drug development and this unit discusses approaches that can predict QT effects prior to undertaking clinical trials. The majority of compounds that prolong the QT interval block the cardiac rapid delayed rectifier potassium current, IKr (hERG). Described in this overview are different ways to measure hERG, from recent advances in automated electrophysiology to the quantification of channel protein trafficking and binding. The contribution of other cardiac ion channels to hERG data interpretation is also discussed. In addition, endpoint measures of the integrated activity of cardiac ion channels at the single-cell, tissue, and whole-animal level, including for example the well-established action potential to the more recent beat-to-beat variability, transmural dispersion of repolarization, and field potential duration, are described in the context of their ability to predict QT prolongation and torsadogenicity in humans.
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Affiliation(s)
- Claire Townsend
- GlaxoSmithKline Biological Reagents and Assay Development, Research Triangle Park, NC, USA
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12
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Coi A, Bianucci AM. Combining structure- and ligand-based approaches for studies of interactions between different conformations of the hERG K+ channel pore and known ligands. J Mol Graph Model 2013; 46:93-104. [PMID: 24185260 DOI: 10.1016/j.jmgm.2013.10.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2013] [Revised: 10/01/2013] [Accepted: 10/03/2013] [Indexed: 11/13/2022]
Abstract
Drug-induced insurgence of cardiotoxic effects signaled by the prolongation of the QT interval in the electrocardiogram, has the potential to evolve into a characteristic arrhythmic event named Torsade de Pointes (TdP). Although several different mechanisms can theoretically lead to prolonged QT interval, most of drugs showing this side effect, prolong the cardiac repolarization time through the inhibition of the rapid component of the delayed repolarizing current (IKr) which in humans is carried by a K(+) channel protein encoded by hERG. In this study, four 3D-models, representing different conformational states of hERG K(+) channel, were built by a homology-based technique. A dataset of 59 compounds was collected from the literature and rationally selected according to the availability of IC50 values derived from whole-cell patch clamp performed at 37 °C on HEK cells. Molecular docking was carried out on each one of the four conformations of the channel, hundreds of docking-based molecular descriptors were obtained and used, together with other 2D and 3D molecular descriptors, to develop QSAR models. The statistical parameters describing the accordance between predicted and experimental data and the interpretation of the QSAR models enabled us to assess the reliability of the four 3D-models of the channel pore, thus allowing to look in more depth at binding modes and key features of the interactions occurring between the hERG K(+) channel and ligands endowed of blocking activity.
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Affiliation(s)
- Alessio Coi
- INSTM (Consorzio National Interuniversity Consortium of Materials Science and Technology), Via Giusti 9, 50121 Firenze, Italy
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13
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Fujii M, Hayashi K, Ohya S, Yamamura H, Imaizumi Y. New screening system for selective blockers of voltage-gated K(+) channels using recombinant cell lines dying upon single action potential. J Pharmacol Sci 2013; 123:147-58. [PMID: 24096832 DOI: 10.1254/jphs.13063fp] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
Abstract
To develop a simple screening system for blockers of voltage-gated Kv1.3 and Kv1.5 channels, new cell lines co-expressing mutated Nav1.5 (IFM/Q3), Kir2.1 (Kir), and Kv1.3 or Kv1.5 were introduced as IFM/Q3+Kir+Kv1.3 and IFM/Q3+Kir+Kv1.5, respectively. Electrical stimulation (ES) of a cell line, IFM/Q3+Kir, induced prolonged action potentials due to the slow inactivation of IFM/Q3 and subsequent cell death. Additional co-expression of Kv1.3 or Kv1.5 to IFM/Q3+Kir shortened the evoked action potentials and prevented cell death. In the presence of margatoxin, a selective Kv1.3-blocker, ES induced cell death in IFM/Q3+Kir+Kv1.3, but not in IFM/Q3+Kir+Kv1.5. In the presence of 4-aminopyridine, a non-selective Kv-channel blocker, ES application elicited cell death in both cell lines. The IC50s of acacetin, a Kv1.5-blocker, was 10.2 μM in IFM/Q3+Kir+Kv1.3 and almost identical to that in IFM/Q3+Kir+Kv1.5 (7.6 μM). The IC50s of citalopram, a 5-HT uptake-inhibitor, were 1.8 μM in IFM/Q3+Kir+Kv1.3 and 1.5 μM in IFM/Q3+Kir+Kv1.5, respectively. These IC50s were comparable to those determined electrophysiologically. In conclusion, acacetin and citalopram block both Kv1.3 and Kv1.5 without selectivity. The Kv1.3 or Kv1.5 channel inhibition assay using these new cell lines may be applicable to high-throughput screening because of its simplicity, accuracy, and high cost-performance.
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Affiliation(s)
- Masato Fujii
- Department of Molecular and Cellular Pharmacology, Graduate School of Pharmaceutical Sciences, Nagoya City University, Japan
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14
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LaPlante SR, Aubry N, Bolger G, Bonneau P, Carson R, Coulombe R, Sturino C, Beaulieu PL. Monitoring drug self-aggregation and potential for promiscuity in off-target in vitro pharmacology screens by a practical NMR strategy. J Med Chem 2013; 56:7073-83. [PMID: 23919803 DOI: 10.1021/jm4008714] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A simple NMR assay was applied to monitor the tendency of compounds to self-aggregate in aqueous media. The observation of unusual spectral trends as a function of compound concentration appears to be signatory of the formation of self-assemblies. (1)H NMR resonances of aggregating compounds were sensitive to the presence of a range of molecular assemblies in solution including large molecular-size entities, smaller multimers, and mixtures of assembled species. The direct observation of aggregates via unusual NMR spectra also correlated with promiscuous behavior of molecules in off-target in vitro pharmacology assays. This empirical assay can have utility for predicting compound promiscuity and should complement predictive methods that principally rely on the computing of descriptors such as lipophilicity (cLogP) and topological surface area (TPSA). This assay should serve as a practical tool for medicinal chemists to monitor compound attributes in aqueous solution and various pharmacologically relevant media, as demonstrated herein.
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Affiliation(s)
- Steven R LaPlante
- Department of Chemistry, Boehringer Ingelheim (Canada) Ltd. , 2100 Cunard Street, Laval, Quebec, H7S 2G5, Canada
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15
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Lu S, Jessen B, Strock C, Will Y. The contribution of physicochemical properties to multiple in vitro cytotoxicity endpoints. Toxicol In Vitro 2012; 26:613-20. [DOI: 10.1016/j.tiv.2012.01.025] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2011] [Revised: 01/28/2012] [Accepted: 01/31/2012] [Indexed: 12/16/2022]
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16
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Discovery of PF-184563, a potent and selective V1a antagonist for the treatment of dysmenorrhoea. The influence of compound flexibility on microsomal stability. Bioorg Med Chem Lett 2011; 21:5684-7. [DOI: 10.1016/j.bmcl.2011.08.038] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2011] [Accepted: 08/06/2011] [Indexed: 11/15/2022]
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17
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Joubert J, Dyk SV, Green IR, Malan SF. Synthesis, evaluation and application of polycyclic fluorescent analogues as N-methyl-d-aspartate receptor and voltage gated calcium channel ligands. Eur J Med Chem 2011; 46:5010-20. [DOI: 10.1016/j.ejmech.2011.08.008] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2011] [Revised: 08/04/2011] [Accepted: 08/05/2011] [Indexed: 11/25/2022]
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18
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Ryckmans T, Aubdool AA, Bodkin JV, Cox P, Brain SD, Dupont T, Fairman E, Hashizume Y, Ishii N, Kato T, Kitching L, Newman J, Omoto K, Rawson D, Strover J. Design and pharmacological evaluation of PF-4840154, a non-electrophilic reference agonist of the TrpA1 channel. Bioorg Med Chem Lett 2011; 21:4857-9. [DOI: 10.1016/j.bmcl.2011.06.035] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2011] [Revised: 06/07/2011] [Accepted: 06/09/2011] [Indexed: 11/15/2022]
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19
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N-Benzylimidazole carboxamides as potent, orally active stearoylCoA desaturase-1 inhibitors. Bioorg Med Chem Lett 2011; 21:1621-5. [DOI: 10.1016/j.bmcl.2011.01.113] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2010] [Accepted: 01/25/2011] [Indexed: 11/23/2022]
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20
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Stupple PA, Batchelor DV, Corless M, Dorr PK, Ellis D, Fenwick DR, Galan SRG, Jones RM, Mason HJ, Middleton DS, Perros M, Perruccio F, Platts MY, Pryde DC, Rodrigues D, Smith NN, Stephenson PT, Webster R, Westby M, Wood A. An imidazopiperidine series of CCR5 antagonists for the treatment of HIV: the discovery of N-{(1S)-1-(3-fluorophenyl)-3-[(3-endo)-3-(5-isobutyryl-2-methyl-4,5,6,7-tetrahydro-1H-imidazo[4,5-c]pyridin-1-yl)-8-azabicyclo[3.2.1]oct-8-yl]propyl}acetamide (PF-232798). J Med Chem 2010; 54:67-77. [PMID: 21128663 DOI: 10.1021/jm100978n] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Preventing entry of HIV into human host cells has emerged as an attractive approach to controlling viral replication. Maraviroc 1 is an approved antagonist of the human CCR5 receptor which prevents the entry of HIV. Herein, we report the design and discovery of a series of imidazopiperidine CCR5 antagonists which retain the attractive antiviral profile and window over hERG activity of maraviroc 1, combined with improved absorption profiles in rat and dog. Furthermore, this series of compounds has been shown to retain activity against a laboratory generated maraviroc-resistant HIV-1 strain, which indicates an alternative resistance profile to that of maraviroc 1. Compound 41f (PF-232798) was selected as a clinical candidate from the imidazopiperidine series and is currently in phase II clinical trials.
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Affiliation(s)
- Paul A Stupple
- Pfizer Global Research and Development, Sandwich Laboratories, Sandwich, Kent, United Kingdom.
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21
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Duan M, Peckham J, Edelstein M, Ferris R, Kazmierski WM, Spaltenstein A, Wheelan P, Xiong Z. Discovery of N-benzyl-N'-(4-pipyridinyl)urea CCR5 antagonists as anti-HIV-1 agents (II): modification of the acyl portion. Bioorg Med Chem Lett 2010; 20:7401-4. [PMID: 21055933 DOI: 10.1016/j.bmcl.2010.10.042] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2010] [Revised: 10/06/2010] [Accepted: 10/08/2010] [Indexed: 11/19/2022]
Abstract
Modification of the acyl moiety in the CCR5 lead molecule 2 led to identification of several new classes of CCR5 antagonists. Antiviral activity and pharmacokinetic properties of the synthesized compounds were evaluated. Structure-activity relationship (SAR) derived from these studies further guided the optimization efforts, ultimately leading to the discovery of 36 with an acceptable drug-like profile.
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Affiliation(s)
- Maosheng Duan
- Infectious Diseases Center for Excellence in Drug Discovery, GlaxoSmithKline, Research Ttriangle Park, NC 27709, USA.
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22
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Meyers MJ, Arhancet GB, Hockerman SL, Chen X, Long SA, Mahoney MW, Rico JR, Garland DJ, Blinn JR, Collins JT, Yang S, Huang HC, McGee KF, Wendling JM, Dietz JD, Payne MA, Homer BL, Heron MI, Reitz DB, Hu X. Discovery of (3S,3aR)-2-(3-Chloro-4-cyanophenyl)-3-cyclopentyl-3,3a,4,5-tetrahydro-2H-benzo[g]indazole-7-carboxylic Acid (PF-3882845), an Orally Efficacious Mineralocorticoid Receptor (MR) Antagonist for Hypertension and Nephropathy. J Med Chem 2010; 53:5979-6002. [PMID: 20672822 DOI: 10.1021/jm100505n] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Marvin J. Meyers
- St. Louis Laboratories, Pfizer Global Research and Development, Pfizer, Inc., 700 Chesterfield Parkway West, Chesterfield, Missouri 63017
| | - Graciela B. Arhancet
- St. Louis Laboratories, Pfizer Global Research and Development, Pfizer, Inc., 700 Chesterfield Parkway West, Chesterfield, Missouri 63017
| | - Susan L. Hockerman
- St. Louis Laboratories, Pfizer Global Research and Development, Pfizer, Inc., 700 Chesterfield Parkway West, Chesterfield, Missouri 63017
| | - Xiangyang Chen
- St. Louis Laboratories, Pfizer Global Research and Development, Pfizer, Inc., 700 Chesterfield Parkway West, Chesterfield, Missouri 63017
| | - Scott A. Long
- St. Louis Laboratories, Pfizer Global Research and Development, Pfizer, Inc., 700 Chesterfield Parkway West, Chesterfield, Missouri 63017
| | - Matthew W. Mahoney
- St. Louis Laboratories, Pfizer Global Research and Development, Pfizer, Inc., 700 Chesterfield Parkway West, Chesterfield, Missouri 63017
| | - Joseph R. Rico
- St. Louis Laboratories, Pfizer Global Research and Development, Pfizer, Inc., 700 Chesterfield Parkway West, Chesterfield, Missouri 63017
| | - Danny J. Garland
- St. Louis Laboratories, Pfizer Global Research and Development, Pfizer, Inc., 700 Chesterfield Parkway West, Chesterfield, Missouri 63017
| | - James. R. Blinn
- St. Louis Laboratories, Pfizer Global Research and Development, Pfizer, Inc., 700 Chesterfield Parkway West, Chesterfield, Missouri 63017
| | - Joe T. Collins
- St. Louis Laboratories, Pfizer Global Research and Development, Pfizer, Inc., 700 Chesterfield Parkway West, Chesterfield, Missouri 63017
| | - Shengtian Yang
- St. Louis Laboratories, Pfizer Global Research and Development, Pfizer, Inc., 700 Chesterfield Parkway West, Chesterfield, Missouri 63017
| | - Horng-Chih Huang
- St. Louis Laboratories, Pfizer Global Research and Development, Pfizer, Inc., 700 Chesterfield Parkway West, Chesterfield, Missouri 63017
| | - Kevin F. McGee
- Albany Molecular Research, Inc., 26 Corporate Circle, Albany, New York 12203
| | - Jay M. Wendling
- St. Louis Laboratories, Pfizer Global Research and Development, Pfizer, Inc., 700 Chesterfield Parkway West, Chesterfield, Missouri 63017
| | - Jessica D. Dietz
- St. Louis Laboratories, Pfizer Global Research and Development, Pfizer, Inc., 700 Chesterfield Parkway West, Chesterfield, Missouri 63017
| | - Maria A. Payne
- St. Louis Laboratories, Pfizer Global Research and Development, Pfizer, Inc., 700 Chesterfield Parkway West, Chesterfield, Missouri 63017
| | - Bruce L. Homer
- St. Louis Laboratories, Pfizer Global Research and Development, Pfizer, Inc., 700 Chesterfield Parkway West, Chesterfield, Missouri 63017
| | - Marcia I. Heron
- St. Louis Laboratories, Pfizer Global Research and Development, Pfizer, Inc., 700 Chesterfield Parkway West, Chesterfield, Missouri 63017
| | - David B. Reitz
- St. Louis Laboratories, Pfizer Global Research and Development, Pfizer, Inc., 700 Chesterfield Parkway West, Chesterfield, Missouri 63017
| | - Xiao Hu
- St. Louis Laboratories, Pfizer Global Research and Development, Pfizer, Inc., 700 Chesterfield Parkway West, Chesterfield, Missouri 63017
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23
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Mikhailov D, Traebert M, Lu Q, Whitebread S, Egan W. Should Cardiosafety be Ruled by hERG Inhibition? Early Testing Scenarios and Integrated Risk Assessment. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/9783527627448.ch16] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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24
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Meyers MJ, Pelc M, Kamtekar S, Day J, Poda GI, Hall MK, Michener ML, Reitz BA, Mathis KJ, Pierce BS, Parikh MD, Mischke DA, Long SA, Parlow JJ, Anderson DR, Thorarensen A. Structure-based drug design enables conversion of a DFG-in binding CSF-1R kinase inhibitor to a DFG-out binding mode. Bioorg Med Chem Lett 2010; 20:1543-7. [DOI: 10.1016/j.bmcl.2010.01.078] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2009] [Revised: 01/13/2010] [Accepted: 01/14/2010] [Indexed: 10/19/2022]
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25
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Guo D, Klaasse E, de Vries H, Brussee J, Nalos L, Rook MB, Vos MA, van der Heyden MAG, Ijzerman AP. Exploring chemical substructures essential for HERG k(+) channel blockade by synthesis and biological evaluation of dofetilide analogues. ChemMedChem 2009; 4:1722-32. [PMID: 19725081 DOI: 10.1002/cmdc.200900203] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
In this study we followed a new approach to analyze molecular substructures required for hERG channel blockade. We designed and synthesized 40 analogues of dofetilide (1), a potent hERG potassium channel blocker, and established structure-activity relationships (SAR) for their interaction with this important cardiotoxicity-related off-target. Structural modifications to dofetilide were made by diversifying the substituents on the phenyl rings and the protonated nitrogen and by varying the carbon chain length. The analogues were evaluated in a radioligand binding assay and SAR data were derived with the aim to specify structural features that give rise to hERG toxicity.
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Affiliation(s)
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- Division of Medicinal Chemistry, Leiden/Amsterdam Center for Drug Research, Leiden University, P.O. Box 9502, 2300 RA Leiden (The Netherlands)
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26
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A new homogeneous high-throughput screening assay for profiling compound activity on the human ether-a-go-go-related gene channel. Anal Biochem 2009; 394:30-8. [PMID: 19583963 DOI: 10.1016/j.ab.2009.07.003] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2009] [Revised: 06/27/2009] [Accepted: 07/02/2009] [Indexed: 01/08/2023]
Abstract
Long QT syndrome, either inherited or acquired from drug treatments, can result in ventricular arrhythmia (torsade de pointes) and sudden death. Human ether-a-go-go-related gene (hERG) channel inhibition by drugs is now recognized as a common reason for the acquired form of long QT syndrome. It has been reported that more than 100 known drugs inhibit the activity of the hERG channel. Since 1997, several drugs have been withdrawn from the market due to the long QT syndrome caused by hERG inhibition. Food and Drug Administration regulations now require safety data on hERG channels for investigative new drug (IND) applications. The assessment of compound activity on the hERG channel has now become an important part of the safety evaluation in the process of drug discovery. During the past decade, several in vitro assay methods have been developed and significant resources have been used to characterize hERG channel activities. However, evaluation of compound activities on hERG have not been performed for large compound collections due to technical difficulty, lack of throughput, and/or lack of biological relevance to function. Here we report a modified form of the FluxOR thallium flux assay, capable of measuring hERG activity in a homogeneous 1536-well plate format. To validate the assay, we screened a 7-point dilution series of the LOPAC 1280 library collection and reported rank order potencies of ten common hERG inhibitors. A correlation was also observed for the hERG channel activities of 10 known hERG inhibitors determined in this thallium flux assay and in the patch clamp experiment. Our findings indicate that this thallium flux assay can be used as an alternative method to profile large-volume compound libraries for compound activity on the hERG channel.
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27
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Price DA, Blagg J, Jones L, Greene N, Wager T. Physicochemical drug properties associated within vivotoxicological outcomes: a review. Expert Opin Drug Metab Toxicol 2009; 5:921-31. [DOI: 10.1517/17425250903042318] [Citation(s) in RCA: 117] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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28
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Design, Synthesis, and Pharmacology of Fluorescently Labeled Analogs of Serotonin: Application to Screening of the 5-HT2C Receptor. ACTA ACUST UNITED AC 2009; 14:360-70. [DOI: 10.1177/1087057109331804] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Novel fluorescent derivatives of serotonin have been synthesized and used as tracers for the development of a 5-HT2C fluorescence polarization assay. Serotonin analogs that feature a fluorescent probe attached through an ether linkage at the tryptamine 5-position have high affinity for the 5-HT2C receptor, and affinity is dependent on both linker length and pendent dye. These variables have been optimized to generate Cy3B derivative 5a, which has 10-fold higher 5-HT2C affinity relative to serotonin (Kd = 0.23 nM). In receptor activation experiments, 5a acts as a full agonist of 5-HT2C. Upon binding to 5-HT2C cell membranes, 5a shows a robust increase in fluorescence polarization (FP) signal. In an FP binding assay using 5a as a tracer ligand, Ki values for known 5-HT2C agonists and antagonists showed excellent agreement with Ki values from radioligand binding ( r2 = 0.93). The FP ligand assay is suitable for high-throughput drug screening applications with respect to speed of analysis, displaceable signal, precision, and sensitivity to various reagents. A 384-well-based high-throughput assay that is rapid, economical, and predictive of test compounds' ability to bind to the 5-HT2C receptor has been compiled and validated. ( Journal of Biomolecular Screening 2009:360-370)
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29
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Developments in fluorescent probes for receptor research. Drug Discov Today 2009; 14:706-12. [PMID: 19573791 DOI: 10.1016/j.drudis.2009.03.015] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2008] [Revised: 03/27/2009] [Accepted: 03/30/2009] [Indexed: 11/21/2022]
Abstract
Early reports on the identification of fluorescent probes for receptors date back to mid-1970s. Fluorescent probes were initially used to visualize molecular targets in an analogous way to the use of fluorescent antibodies but with the same resolution as isotopically labelled ligands. In parallel to the rapid development of techniques, such as fluorescence correlation spectroscopy, multi-photon excitation fluorescence microscopy, fluorescence polarization and in vivo fluorescence imaging, fluorescent probes are becoming multifaceted tools in life science. The present review will focus on how the design of fluorescent ligands for receptors has evolved to meet the needs of most recent fluorescence applications.
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30
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(3,3-Difluoro-pyrrolidin-1-yl)-[(2S,4S)-(4-(4-pyrimidin-2-yl-piperazin-1-yl)-pyrrolidin-2-yl]-methanone: A potent, selective, orally active dipeptidyl peptidase IV inhibitor. Bioorg Med Chem Lett 2009; 19:1991-5. [DOI: 10.1016/j.bmcl.2009.02.041] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2008] [Revised: 02/09/2009] [Accepted: 02/10/2009] [Indexed: 11/21/2022]
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31
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2,4-Diaminopyridine δ-opioid receptor agonists and their associated hERG pharmacology. Bioorg Med Chem Lett 2009; 19:1702-6. [DOI: 10.1016/j.bmcl.2009.01.106] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2008] [Revised: 01/27/2009] [Accepted: 01/28/2009] [Indexed: 11/22/2022]
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32
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Lansdell MI, Burring DJ, Hepworth D, Strawbridge M, Graham E, Guyot T, Betson MS, Hart JD. Design and synthesis of fluorescent SGLT2 inhibitors. Bioorg Med Chem Lett 2008; 18:4944-7. [DOI: 10.1016/j.bmcl.2008.08.036] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2008] [Revised: 08/11/2008] [Accepted: 08/12/2008] [Indexed: 11/30/2022]
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33
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Development of the Predictor hERG Fluorescence Polarization Assay Using a Membrane Protein Enrichment Approach. Assay Drug Dev Technol 2008; 6:213-23. [DOI: 10.1089/adt.2008.137] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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34
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Lacivita E, Leopoldo M. N-[ω-[4-(2-Methoxyphenyl)-1-piperazinyl]alkyl]-2-quinolinamines as High-Affinity Fluorescent 5-HT1A Receptor Ligands. J Med Chem 2008; 51:1492-5. [DOI: 10.1021/jm7013919] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Enza Lacivita
- Dipartimento Farmaco-Chimico, Università degli Studi di Bari, via Orabona, 4, 70125 Bari, Italy
| | - Marcello Leopoldo
- Dipartimento Farmaco-Chimico, Università degli Studi di Bari, via Orabona, 4, 70125 Bari, Italy
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