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Arman S, Tilley RD, Gooding JJ. A review of electrochemical impedance as a tool for examining cell biology and subcellular mechanisms: merits, limits, and future prospects. Analyst 2024; 149:269-289. [PMID: 38015145 DOI: 10.1039/d3an01423a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
Herein the development of cellular impedance biosensors, electrochemical impedance spectroscopy, and the general principles and terms associated with the cell-electrode interface is reviewed. This family of techniques provides quantitative and sensitive information into cell responses to stimuli in real-time with high temporal resolution. The applications of cell-based impedance biosensors as a readout in cell biology is illustrated with a diverse range of examples. The current state of the field, its limitations, the possible available solutions, and the potential benefits of developing biosensors are discussed.
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Affiliation(s)
- Seyedyousef Arman
- School of Chemistry, The University of New South Wales, Sydney, New South Wales 2052, Australia.
- Australia Centre for Nanomedicine, The University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Richard D Tilley
- School of Chemistry, The University of New South Wales, Sydney, New South Wales 2052, Australia.
- Electron Microscope Unit, Mark Wainwright Analytical Centre, The University of New South Wales, Sydney, New South Wales 2052, Australia
| | - J Justin Gooding
- School of Chemistry, The University of New South Wales, Sydney, New South Wales 2052, Australia.
- Australia Centre for Nanomedicine, The University of New South Wales, Sydney, New South Wales 2052, Australia
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Pioz MJ, Espinosa RL, Laguna MF, Santamaria B, Murillo AMM, Hueros ÁL, Quintero S, Tramarin L, Valle LG, Herreros P, Bellido A, Casquel R, Holgado M. A review of Optical Point-of-Care devices to Estimate the Technology Transfer of These Cutting-Edge Technologies. Biosensors (Basel) 2022; 12:bios12121091. [PMID: 36551058 PMCID: PMC9776401 DOI: 10.3390/bios12121091] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 11/12/2022] [Accepted: 11/18/2022] [Indexed: 06/07/2023]
Abstract
Despite the remarkable development related to Point-of-Care devices based on optical technology, their difficulties when used outside of research laboratories are notable. In this sense, it would be interesting to ask ourselves what the degree of transferability of the research work to the market is, for example, by analysing the relation between the scientific work developed and the registered one, through patent. In this work, we provide an overview of the state-of-the-art in the sector of optical Point-of-Care devices, not only in the research area but also regarding their transfer to market. To this end, we explored a methodology for searching articles and patents to obtain an indicator that relates to both. This figure of merit to estimate this transfer is based on classifying the relevant research articles in the area and the patents that have been generated from these ones. To delimit the scope of this study, we researched the results of a large enough number of publications in the period from 2015 to 2020, by using keywords "biosensor", "optic", and "device" to obtain the most representative articles from Web of Science and Scopus. Then, we classified them according to a particular classification of the optical PoC devices. Once we had this sampling frame, we defined a patent search strategy to cross-link the article with a registered patent (by surfing Google Patents) and classified them accordingly to the categories described. Finally, we proposed a relative figure called Index of Technology Transference (IoTT), which estimates to what extent our findings in science materialized in published articles are protected by patent.
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Affiliation(s)
- María Jesús Pioz
- Optics, Photonics and Biophotonics Group, Center for Biomedical Technology, Optics, Universidad Politécnica de Madrid, Campus Montegancedo, Pozuelo de Alarcón, 28223 Madrid, Spain
- University of Nebrija, C/del Hostal, Campus Berzosa, 28248 Madrid, Spain
| | - Rocío L. Espinosa
- Optics, Photonics and Biophotonics Group, Center for Biomedical Technology, Optics, Universidad Politécnica de Madrid, Campus Montegancedo, Pozuelo de Alarcón, 28223 Madrid, Spain
- Group of Organ and Tissue on-a-Chip and In-Vitro Detection, Health Research Institute of the Hospital Clínico San Carlos IdISSC, C/Profesor Martín Lagos s/n, 4ª _Planta Sur, 28040 Madrid, Spain
- Department of Applied Physics and Materials Engineering, Escuela Técnica Superior de Ingenieros Industriales, Universidad Politécnica de Madrid, C/José Gutiérrez Abascal 2, 28006 Madrid, Spain
| | - María Fe Laguna
- Optics, Photonics and Biophotonics Group, Center for Biomedical Technology, Optics, Universidad Politécnica de Madrid, Campus Montegancedo, Pozuelo de Alarcón, 28223 Madrid, Spain
- Group of Organ and Tissue on-a-Chip and In-Vitro Detection, Health Research Institute of the Hospital Clínico San Carlos IdISSC, C/Profesor Martín Lagos s/n, 4ª _Planta Sur, 28040 Madrid, Spain
- Department of Applied Physics and Materials Engineering, Escuela Técnica Superior de Ingenieros Industriales, Universidad Politécnica de Madrid, C/José Gutiérrez Abascal 2, 28006 Madrid, Spain
| | - Beatriz Santamaria
- Optics, Photonics and Biophotonics Group, Center for Biomedical Technology, Optics, Universidad Politécnica de Madrid, Campus Montegancedo, Pozuelo de Alarcón, 28223 Madrid, Spain
- Group of Organ and Tissue on-a-Chip and In-Vitro Detection, Health Research Institute of the Hospital Clínico San Carlos IdISSC, C/Profesor Martín Lagos s/n, 4ª _Planta Sur, 28040 Madrid, Spain
- Metch, Chem & Industrial Design Engineering Department, Escuela Técnica Superior de Ingeniería y Diseño Industrial, Universidad Politécnica de Madrid, Ronda de Valencia 3, 28012 Madrid, Spain
| | - Ana María M. Murillo
- Optics, Photonics and Biophotonics Group, Center for Biomedical Technology, Optics, Universidad Politécnica de Madrid, Campus Montegancedo, Pozuelo de Alarcón, 28223 Madrid, Spain
- Group of Organ and Tissue on-a-Chip and In-Vitro Detection, Health Research Institute of the Hospital Clínico San Carlos IdISSC, C/Profesor Martín Lagos s/n, 4ª _Planta Sur, 28040 Madrid, Spain
| | - Álvaro Lavín Hueros
- Optics, Photonics and Biophotonics Group, Center for Biomedical Technology, Optics, Universidad Politécnica de Madrid, Campus Montegancedo, Pozuelo de Alarcón, 28223 Madrid, Spain
- Group of Organ and Tissue on-a-Chip and In-Vitro Detection, Health Research Institute of the Hospital Clínico San Carlos IdISSC, C/Profesor Martín Lagos s/n, 4ª _Planta Sur, 28040 Madrid, Spain
- Department of Applied Physics and Materials Engineering, Escuela Técnica Superior de Ingenieros Industriales, Universidad Politécnica de Madrid, C/José Gutiérrez Abascal 2, 28006 Madrid, Spain
| | - Sergio Quintero
- Optics, Photonics and Biophotonics Group, Center for Biomedical Technology, Optics, Universidad Politécnica de Madrid, Campus Montegancedo, Pozuelo de Alarcón, 28223 Madrid, Spain
- Group of Organ and Tissue on-a-Chip and In-Vitro Detection, Health Research Institute of the Hospital Clínico San Carlos IdISSC, C/Profesor Martín Lagos s/n, 4ª _Planta Sur, 28040 Madrid, Spain
| | - Luca Tramarin
- Optics, Photonics and Biophotonics Group, Center for Biomedical Technology, Optics, Universidad Politécnica de Madrid, Campus Montegancedo, Pozuelo de Alarcón, 28223 Madrid, Spain
- Group of Organ and Tissue on-a-Chip and In-Vitro Detection, Health Research Institute of the Hospital Clínico San Carlos IdISSC, C/Profesor Martín Lagos s/n, 4ª _Planta Sur, 28040 Madrid, Spain
| | - Luis G Valle
- Optics, Photonics and Biophotonics Group, Center for Biomedical Technology, Optics, Universidad Politécnica de Madrid, Campus Montegancedo, Pozuelo de Alarcón, 28223 Madrid, Spain
- Group of Organ and Tissue on-a-Chip and In-Vitro Detection, Health Research Institute of the Hospital Clínico San Carlos IdISSC, C/Profesor Martín Lagos s/n, 4ª _Planta Sur, 28040 Madrid, Spain
| | - Pedro Herreros
- Optics, Photonics and Biophotonics Group, Center for Biomedical Technology, Optics, Universidad Politécnica de Madrid, Campus Montegancedo, Pozuelo de Alarcón, 28223 Madrid, Spain
- Group of Organ and Tissue on-a-Chip and In-Vitro Detection, Health Research Institute of the Hospital Clínico San Carlos IdISSC, C/Profesor Martín Lagos s/n, 4ª _Planta Sur, 28040 Madrid, Spain
- Department of Applied Physics and Materials Engineering, Escuela Técnica Superior de Ingenieros Industriales, Universidad Politécnica de Madrid, C/José Gutiérrez Abascal 2, 28006 Madrid, Spain
| | - Alberto Bellido
- Optics, Photonics and Biophotonics Group, Center for Biomedical Technology, Optics, Universidad Politécnica de Madrid, Campus Montegancedo, Pozuelo de Alarcón, 28223 Madrid, Spain
- Multiplex Molecular Diagnostics S.L. C/ Munner 10, 08022 Barcelona, Spain
| | - Rafael Casquel
- Optics, Photonics and Biophotonics Group, Center for Biomedical Technology, Optics, Universidad Politécnica de Madrid, Campus Montegancedo, Pozuelo de Alarcón, 28223 Madrid, Spain
- Group of Organ and Tissue on-a-Chip and In-Vitro Detection, Health Research Institute of the Hospital Clínico San Carlos IdISSC, C/Profesor Martín Lagos s/n, 4ª _Planta Sur, 28040 Madrid, Spain
- Department of Applied Physics and Materials Engineering, Escuela Técnica Superior de Ingenieros Industriales, Universidad Politécnica de Madrid, C/José Gutiérrez Abascal 2, 28006 Madrid, Spain
| | - Miguel Holgado
- Optics, Photonics and Biophotonics Group, Center for Biomedical Technology, Optics, Universidad Politécnica de Madrid, Campus Montegancedo, Pozuelo de Alarcón, 28223 Madrid, Spain
- Group of Organ and Tissue on-a-Chip and In-Vitro Detection, Health Research Institute of the Hospital Clínico San Carlos IdISSC, C/Profesor Martín Lagos s/n, 4ª _Planta Sur, 28040 Madrid, Spain
- Department of Applied Physics and Materials Engineering, Escuela Técnica Superior de Ingenieros Industriales, Universidad Politécnica de Madrid, C/José Gutiérrez Abascal 2, 28006 Madrid, Spain
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Vlachodimou A, de Vries H, Pasoli M, Goudswaard M, Kim SA, Kim YC, Scortichini M, Marshall M, Linden J, Heitman LH, Jacobson KA, IJzerman AP. Kinetic profiling and functional characterization of 8-phenylxanthine derivatives as A 2B adenosine receptor antagonists. Biochem Pharmacol 2022; 200:115027. [PMID: 35395239 DOI: 10.1016/j.bcp.2022.115027] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 03/22/2022] [Accepted: 03/24/2022] [Indexed: 12/30/2022]
Abstract
A2B adenosine receptor (A2BAR) antagonists have therapeutic potential in inflammation-related diseases such as asthma, chronic obstructive pulmonary disease and cancer. However, no drug is currently clinically approved, creating a demand for research on novel antagonists. Over the last decade, the study of target binding kinetics, along with affinity and potency, has been proven valuable in early drug discovery stages, as it is associated with improved in vivo drug efficacy and safety. In this study, we report the synthesis and biological evaluation of a series of xanthine derivatives as A2BAR antagonists, including an isothiocyanate derivative designed to bind covalently to the receptor. All 28 final compounds were assessed in radioligand binding experiments, to evaluate their affinity and for those qualifying, kinetic binding parameters. Both structure-affinity and structure-kinetic relationships were derived, providing a clear relationship between affinity and dissociation rate constants. Two structurally similar compounds, 17 and 18, were further evaluated in a label-free assay due to their divergent kinetic profiles. An extended cellular response was associated with long A2BAR residence times. This link between a ligand's A2BAR residence time and its functional effect highlights the importance of binding kinetics as a selection parameter in the early stages of drug discovery.
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Affiliation(s)
- Anna Vlachodimou
- Division of Drug Discovery and Safety, Leiden Academic Centre for Drug Research (LACDR), Leiden University, P.O. Box 9502, 2300 RA Leiden, the Netherlands
| | - Henk de Vries
- Division of Drug Discovery and Safety, Leiden Academic Centre for Drug Research (LACDR), Leiden University, P.O. Box 9502, 2300 RA Leiden, the Netherlands
| | - Milena Pasoli
- Division of Drug Discovery and Safety, Leiden Academic Centre for Drug Research (LACDR), Leiden University, P.O. Box 9502, 2300 RA Leiden, the Netherlands
| | - Miranda Goudswaard
- Division of Drug Discovery and Safety, Leiden Academic Centre for Drug Research (LACDR), Leiden University, P.O. Box 9502, 2300 RA Leiden, the Netherlands
| | - Soon-Ai Kim
- Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases, NIH, 9000 Rockville Pike, Bethesda, MD 20892, USA
| | - Yong-Chul Kim
- Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases, NIH, 9000 Rockville Pike, Bethesda, MD 20892, USA
| | - Mirko Scortichini
- Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases, NIH, 9000 Rockville Pike, Bethesda, MD 20892, USA
| | - Melissa Marshall
- Department of Internal Medicine and Molecular Physiology & Biological Physics, University of Virginia Health Science Center, Charlottesville, VA 22908, USA
| | - Joel Linden
- Department of Internal Medicine and Molecular Physiology & Biological Physics, University of Virginia Health Science Center, Charlottesville, VA 22908, USA
| | - Laura H Heitman
- Division of Drug Discovery and Safety, Leiden Academic Centre for Drug Research (LACDR), Leiden University, P.O. Box 9502, 2300 RA Leiden, the Netherlands; Oncode Institute, Leiden, the Netherlands
| | - Kenneth A Jacobson
- Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases, NIH, 9000 Rockville Pike, Bethesda, MD 20892, USA.
| | - Adriaan P IJzerman
- Division of Drug Discovery and Safety, Leiden Academic Centre for Drug Research (LACDR), Leiden University, P.O. Box 9502, 2300 RA Leiden, the Netherlands.
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Seibel-Ehlert U, Plank N, Inoue A, Bernhardt G, Strasser A. Label-Free Investigations on the G Protein Dependent Signaling Pathways of Histamine Receptors. Int J Mol Sci 2021; 22:9739. [PMID: 34575903 PMCID: PMC8467282 DOI: 10.3390/ijms22189739] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 09/03/2021] [Accepted: 09/06/2021] [Indexed: 01/14/2023] Open
Abstract
G protein activation represents an early key event in the complex GPCR signal transduction process and is usually studied by label-dependent methods targeting specific molecular events. However, the constrained environment of such "invasive" techniques could interfere with biological processes. Although histamine receptors (HRs) represent (evolving) drug targets, their signal transduction is not fully understood. To address this issue, we established a non-invasive dynamic mass redistribution (DMR) assay for the human H1-4Rs expressed in HEK cells, showing excellent signal-to-background ratios above 100 for histamine (HIS) and higher than 24 for inverse agonists with pEC50 values consistent with literature. Taking advantage of the integrative nature of the DMR assay, the involvement of endogenous Gαq/11, Gαs, Gα12/13 and Gβγ proteins was explored, pursuing a two-pronged approach, namely that of classical pharmacology (G protein modulators) and that of molecular biology (Gα knock-out HEK cells). We showed that signal transduction of hH1-4Rs occurred mainly, but not exclusively, via their canonical Gα proteins. For example, in addition to Gαi/o, the Gαq/11 protein was proven to contribute to the DMR response of hH3,4Rs. Moreover, the Gα12/13 was identified to be involved in the hH2R mediated signaling pathway. These results are considered as a basis for future investigations on the (patho)physiological role and the pharmacological potential of H1-4Rs.
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Affiliation(s)
- Ulla Seibel-Ehlert
- Institute of Pharmacy, Faculty of Chemistry and Pharmacy, University of Regensburg, 93040 Regensburg, Germany; (N.P.); (G.B.)
| | - Nicole Plank
- Institute of Pharmacy, Faculty of Chemistry and Pharmacy, University of Regensburg, 93040 Regensburg, Germany; (N.P.); (G.B.)
| | - Asuka Inoue
- Department of Pharmacological Sciences, Tohoku University, Sendai 980-8578, Japan;
| | - Guenther Bernhardt
- Institute of Pharmacy, Faculty of Chemistry and Pharmacy, University of Regensburg, 93040 Regensburg, Germany; (N.P.); (G.B.)
| | - Andrea Strasser
- Institute of Pharmacy, Faculty of Chemistry and Pharmacy, University of Regensburg, 93040 Regensburg, Germany; (N.P.); (G.B.)
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Abstract
Metastasis is a frequent complication of cancer and accounts for more than 60% of patients' mortality. Despite technological advancements, treatment options are still limited. Ion channels participate in the regulation of cell adhesion, whilst the regulation of cell adhesion further controls metastasis formation. However, to develop a new ion channel inhibitor targeting metastasis takes tremendous effort and resources; therefore, drug repurposing is an emerging strategy in oncology. In previous studies, we have developed a metal-based nanoslit surface plasmon resonance (SPR) platform to examine the influence of drugs on the cell adhesion process. In this work, we developed a scanner-based cell adhesion kinetic examination (CAKE) system that is capable of monitoring the cell adhesion process by measuring color changes of SPR biosensors. The system's performance was demonstrated by screening the anti-metastasis ability of compounds from a commercial ion-channel inhibitor library. Out of the 274 compounds from the inhibitor library, zinc pyrithione (ZPT) and terfenadine were demonstrated to influence CL1-5 cell adhesion. The cell responses to the two compounds were then compared with those by traditional cell adhesion assays where similar behavior was observed. Further investigation of the two compounds using wound healing and transwell assays was performed and inhibitions of both cell migration and invasion by the two compounds were also observed. The results indicate that ZPT and terfenadine are potential candidates for anti-metastasis drugs. Our work has demonstrated the label-free drug screening ability of our CAKE system for finding potential drugs for cancer treatment.
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Affiliation(s)
- Shih-En Chou
- Research Center for Applied Sciences, Academia Sinica Taiwan, Taipei, 11529, Taiwan.
| | - Kuang-Li Lee
- Research Center for Applied Sciences, Academia Sinica Taiwan, Taipei, 11529, Taiwan.
| | - Pei-Kuen Wei
- Research Center for Applied Sciences, Academia Sinica Taiwan, Taipei, 11529, Taiwan. and Institute of Biophotonics, National Yang Ming Chiao Tung University, Taipei, 11221, Taiwan
| | - Ji-Yen Cheng
- Research Center for Applied Sciences, Academia Sinica Taiwan, Taipei, 11529, Taiwan. and Institute of Biophotonics, National Yang Ming Chiao Tung University, Taipei, 11221, Taiwan and Department of Mechanical and Mechatronic Engineering, National Taiwan Ocean University, Keelung, 20224, Taiwan and College of Engineering, Chang Gung University, Taoyuan, 33302, Taiwan
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Lee KL, Hou HS, Cheng JY, Wei PK. High-Throughput and Dynamic Study of Drug and Cell Interactions Using Contrast Images in Aluminum-Based Nanoslit Arrays. Anal Chem 2020; 92:9674-9681. [DOI: 10.1021/acs.analchem.0c00972] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Kuang-Li Lee
- Research Center for Applied Sciences, Academia Sinica, 128 Academia Road, Section 2, Nankang, Taipei 11529, Taiwan
| | - Hsien-San Hou
- Research Center for Applied Sciences, Academia Sinica, 128 Academia Road, Section 2, Nankang, Taipei 11529, Taiwan
| | - Ji-Yen Cheng
- Research Center for Applied Sciences, Academia Sinica, 128 Academia Road, Section 2, Nankang, Taipei 11529, Taiwan
| | - Pei-Kuen Wei
- Research Center for Applied Sciences, Academia Sinica, 128 Academia Road, Section 2, Nankang, Taipei 11529, Taiwan
- Institute of Optoelectronic Sciences, National Taiwan Ocean University, Keelung 20224, Taiwan
- Institute of Biophotonics, National Yang-Ming University, Taipei 11221, Taiwan
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Wang R, Liu Y, Zhou H, Chen Y, Wang J, Zhang X, Yu R, Liang X. Integration of micro-fractionation, high-performance liquid chromatography-ultraviolet detector-charged aerosol detector-mass spectrometry analysis and cellular dynamic mass redistribution assay to accelerate alkaloid drug discovery. J Chromatogr A 2020; 1616:460779. [DOI: 10.1016/j.chroma.2019.460779] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Revised: 11/24/2019] [Accepted: 12/09/2019] [Indexed: 01/18/2023]
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Vlachodimou A, Konstantinopoulou K, IJzerman AP, Heitman LH. Affinity, binding kinetics and functional characterization of draflazine analogues for human equilibrative nucleoside transporter 1 (SLC29A1). Biochem Pharmacol 2020; 172:113747. [DOI: 10.1016/j.bcp.2019.113747] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Accepted: 12/05/2019] [Indexed: 12/31/2022]
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Zhou H, Peng X, Hou T, Zhao N, Qiu M, Zhang X, Liang X. Identification of novel phytocannabinoids from Ganoderma by label-free dynamic mass redistribution assay. J Ethnopharmacol 2020; 246:112218. [PMID: 31494202 DOI: 10.1016/j.jep.2019.112218] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Revised: 08/15/2019] [Accepted: 09/02/2019] [Indexed: 06/10/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Located throughout the body, cannabinoid receptors (CB1 and CB2) are therapeutic targets for obesity/metabolic diseases, neurological/mental disorders, and immune modulation. Phytocannabinoids are greatly important for the development of new medicines with high efficacy and/or minor side effects. Plants and fungi are used in traditional medicine for beneficial effects to mental and immune system. The current research studied five fungi from the genus Ganoderma and five plants: Ganoderma hainanense J.D. Zhao, L.W. Hsu & X.Q. Zhang; Ganoderma capense (Lloyd) Teng, Zhong Guo De Zhen Jun; Ganoderma cochlear (Blume & T. Nees) Bres., Hedwigia; Ganoderma resinaceum Boud.; Ganoderma applanatum (Pers.) Pat.; Carthamus tinctorius L. (Compositae); Cynanchum otophyllum C. K. Schneid. (Asclepiadaceae); Coffea arabica L. (Rubiaceae); Prinsepia utilis Royle (Rosaceae); Lepidium meyenii Walp. (Brassicaceae). They show immunoregulation, promotion of longevity and maintenance of vitality, stimulant effects on the central nervous system, hormone balance and other beneficial effects. However, it remains unclear whether cannabinoid receptors are involved in these effects. AIM OF THE STUDY This work aimed to identify components working on CB1 and CB2 from the above plants and fungi, as novel phytocannabinoids, and to investigate mechanisms of how these compounds affected the cells. By analyzing the structure-activity relationship, we could identify the core structure for future development. MATERIALS AND METHODS Eighty-two natural compounds were screened on stably transfected Chinese hamster ovary (CHO) cell lines, CHO-CB1 and CHO-CB2, with application of a label-free dynamic mass redistribution (DMR) technology that measured cellular responses to compounds. CP55,940 and WIN55,212-2 were agonist probe molecules, and SR141716A and SR144528 were antagonist probes. Pertussis toxin, cholera toxin, LY294002 and U73122 were signaling pathway inhibitors. The DMR data were acquired by Epic Imager software (Corning, NY), processed by Imager Beta 3.7 (Corning), and analyzed by GraphPad Prism 6 (GraphPad Software, San Diego, CA). RESULTS Transfected CHO-CB1 and CHO-CB2 cell lines were established and characterized. Seven compounds induced responses/activities in the cells. Among the seven compounds, four were purified from two Ganoderma species with potencies between 20 and 35 μM. Three antagonists: Kfb68 antagonized both receptors with a better desensitizing effect on CB2 to WIN55,212-2 over CP55,940. Kga1 and Kfb28 were antagonists selective to CB1 and CB2, respectively. Kfb77 was a special agonist and it stimulated CB1 in a mechanism different from that of CP55,940. Another three active compounds, derived from the Lepidium meyenii Walp. (Brassicaceae), were also identified but their effects were mediated through mechanisms much related to the signaling transduction pathways, especially through the stimulatory Gs protein. CONCLUSIONS We identified four natural cannabinoids that exhibited structural and functional diversities. Our work confirms the presence of active ingredients in the Ganoderma species to CB1 and CB2, and this finding establishes connections between the fungi and the cannabinoid receptors, which will serve as a starting point to connect their beneficial effects to the endocannabinoid system. This research will also enrich the inventory of cannabinoids and phytocannabinoids from fungi. Yet due to some limitations, further structure-activity relationship studies and mechanism investigation are warranted in future.
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Affiliation(s)
- Han Zhou
- Key Lab of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China.
| | - Xingrong Peng
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China; Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China.
| | - Tao Hou
- Key Lab of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China.
| | - Nan Zhao
- Pharmacology Department, University College London, London, WC1E 6BT, UK.
| | - Minghua Qiu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China; Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China.
| | - Xiuli Zhang
- Key Lab of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China; College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, China.
| | - Xinmiao Liang
- Key Lab of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China.
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Vlachodimou A, IJzerman AP, Heitman LH. Label-free detection of transporter activity via GPCR signalling in living cells: A case for SLC29A1, the equilibrative nucleoside transporter 1. Sci Rep 2019; 9:13802. [PMID: 31551431 PMCID: PMC6760145 DOI: 10.1038/s41598-019-48829-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Accepted: 08/06/2019] [Indexed: 12/31/2022] Open
Abstract
Transporters are important therapeutic but yet understudied targets due to lack of available assays. Here we describe a novel label-free, whole-cell method for the functional assessment of Solute Carrier (SLC) inhibitors. As many SLC substrates are also ligands for G protein-coupled receptors (GPCRs), transporter inhibition may affect GPCR signalling due to a change in extracellular concentration of the substrate/ligand, which can be monitored by an impedance-based label-free assay. For this study, a prototypical SLC/GPCR pair was selected, i.e. the equilibrative nucleoside transporter-1 (SLC29A1/ENT1) and an adenosine receptor (AR), for which adenosine is the substrate/ligand. ENT1 inhibition with three reference compounds was monitored sensitively via AR activation on human osteosarcoma cells. Firstly, the inhibitor addition resulted in an increased apparent potency of adenosine. Secondly, all inhibitors concentration-dependently increased the extracellular adenosine concentration, resulting in an indirect quantitative assessment of their potencies. Additionally, AR activation was abolished by AR antagonists, confirming that the monitored impedance was AR-mediated. In summary, we developed a novel assay as an in vitro model system that reliably assessed the potency of SLC29A1 inhibitors via AR signalling. As such, the method may be applied broadly as it has the potential to study a multitude of SLCs via concomitant GPCR signalling.
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Affiliation(s)
- Anna Vlachodimou
- Division of Drug Discovery and Safety, Leiden Academic Centre for Drug Research (LACDR), Leiden University, P.O. Box 9502, 2300 RA, Leiden, The Netherlands
| | - Adriaan P IJzerman
- Division of Drug Discovery and Safety, Leiden Academic Centre for Drug Research (LACDR), Leiden University, P.O. Box 9502, 2300 RA, Leiden, The Netherlands
| | - Laura H Heitman
- Division of Drug Discovery and Safety, Leiden Academic Centre for Drug Research (LACDR), Leiden University, P.O. Box 9502, 2300 RA, Leiden, The Netherlands.
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11
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Zhou W, Wang J, Zhao Y, Yu L, Fang Y, Jin H, Zhou H, Zhang P, Liu Y, Zhang X, Liang X. Discovery of β2- adrenoceptor agonists in Curcuma zedoaria Rosc using label-free cell phenotypic assay combined with two-dimensional liquid chromatography. J Chromatogr A 2018; 1577:59-65. [DOI: 10.1016/j.chroma.2018.09.053] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Revised: 09/15/2018] [Accepted: 09/24/2018] [Indexed: 10/28/2022]
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12
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13
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Nederpelt I, Vergroesen R, IJzerman A, Heitman L. Persistent GnRH receptor activation in pituitary αT3-1 cells analyzed with a label-free technology. Biosens Bioelectron 2016; 79:721-7. [DOI: 10.1016/j.bios.2015.12.066] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Revised: 12/10/2015] [Accepted: 12/20/2015] [Indexed: 12/21/2022]
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14
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Abstract
INTRODUCTION In the past decade, a range of innovative strategies have been developed to improve the productivity of pharmaceutical research and development. In particular, compound annotation, combined with informatics, has provided unprecedented opportunities for drug discovery. AREAS COVERED In this review, a literature search from 2000 to 2015 was conducted to provide an overview of the compound annotation approaches currently used in drug discovery. Based on this, a framework related to a compound annotation approach using real-time cellular activity profiles for probe, drug, and biology discovery is proposed. EXPERT OPINION Compound annotation with chemical structure, drug-like properties, bioactivities, genome-wide effects, clinical phenotypes, and textural abstracts has received significant attention in early drug discovery. However, these annotations are mostly associated with endpoint results. Advances in assay techniques have made it possible to obtain real-time cellular activity profiles of drug molecules under different phenotypes, so it is possible to generate compound annotation with real-time cellular activity profiles. Combining compound annotation with informatics, such as similarity analysis, presents a good opportunity to improve the rate of discovery of novel drugs and probes, and enhance our understanding of the underlying biology.
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Affiliation(s)
- Ye Fang
- a Biochemical Technologies, Science and Technology Division , Corning Incorporated , Corning , NY , USA
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15
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Klein AB, Nittegaard-Nielsen M, Christensen JT, Al-Khawaja A, Wellendorph P. Demonstration of the dynamic mass redistribution label-free technology as a useful cell-based pharmacological assay for endogenously expressed GABAA receptors. Med Chem Commun 2016. [DOI: 10.1039/c5md00442j] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Within the continuous quest for the discovery of pharmacologically interesting compounds, the development of new and superior drug screening assays is desired.
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Affiliation(s)
- Anders B. Klein
- Department of Drug Design and Pharmacology
- Faculty of Health and Medical Sciences
- University of Copenhagen
- DK-2100 Copenhagen
- Denmark
| | - Mia Nittegaard-Nielsen
- Department of Drug Design and Pharmacology
- Faculty of Health and Medical Sciences
- University of Copenhagen
- DK-2100 Copenhagen
- Denmark
| | - Julie T. Christensen
- Department of Drug Design and Pharmacology
- Faculty of Health and Medical Sciences
- University of Copenhagen
- DK-2100 Copenhagen
- Denmark
| | - Anas Al-Khawaja
- Department of Drug Design and Pharmacology
- Faculty of Health and Medical Sciences
- University of Copenhagen
- DK-2100 Copenhagen
- Denmark
| | - Petrine Wellendorph
- Department of Drug Design and Pharmacology
- Faculty of Health and Medical Sciences
- University of Copenhagen
- DK-2100 Copenhagen
- Denmark
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16
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Anderson ME, O'Brien EC, Grayek EN, Hermansen JK, Hunt HK. The Detection of Helicobacter hepaticus Using Whispering-Gallery Mode Microcavity Optical Sensors. Biosensors (Basel). 2015;5:562-576. [PMID: 26262647 DOI: 10.3390/bios5030562] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Accepted: 08/05/2015] [Indexed: 11/17/2022]
Abstract
Current bacterial detection techniques are relatively slow, require bulky instrumentation, and usually require some form of specialized training. The gold standard for bacterial detection is culture testing, which can take several days to receive a viable result. Therefore, simpler detection techniques that are both fast and sensitive could greatly improve bacterial detection and identification. Here, we present a new method for the detection of the bacteria Helicobacter hepaticus using whispering-gallery mode (WGM) optical microcavity-based sensors. Due to minimal reflection losses and low material adsorption, WGM-based sensors have ultra-high quality factors, resulting in high-sensitivity sensor devices. In this study, we have shown that bacteria can be non-specifically detected using WGM optical microcavity-based sensors. The minimum detection for the device was 1 × 104 cells/mL, and the minimum time of detection was found to be 750 s. Given that a cell density as low as 1 × 103 cells/mL for Helicobacter hepaticus can cause infection, the limit of detection shown here would be useful for most levels where Helicobacter hepaticus is biologically relevant. This study suggests a new approach for H. hepaticus detection using label-free optical sensors that is faster than, and potentially as sensitive as, standard techniques.
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17
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Wang F, Anderson M, Bernards MT, Hunt HK. PEG Functionalization of Whispering Gallery Mode Optical Microresonator Biosensors to Minimize Non-Specific Adsorption during Targeted, Label-Free Sensing. Sensors (Basel) 2015; 15:18040-60. [PMID: 26213937 PMCID: PMC4570306 DOI: 10.3390/s150818040] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Revised: 07/16/2015] [Accepted: 07/17/2015] [Indexed: 01/14/2023]
Abstract
Whispering Gallery Mode (WGM) optical microresonator biosensors are a powerful tool for targeted detection of analytes at extremely low concentrations. However, in complex environments, non-specific adsorption can significantly reduce their signal to noise ratio, limiting their accuracy. To overcome this, poly(ethylene glycol) (PEG) can be employed in conjunction with appropriate recognition elements to create a nonfouling surface capable of detecting targeted analytes. This paper investigates a general route for the addition of nonfouling elements to WGM optical biosensors to reduce non-specific adsorption, while also retaining high sensitivity. We use the avidin-biotin analyte-recognition element system, in conjunction with PEG nonfouling elements, as a proof-of-concept, and explore the extent of non-specific adsorption of lysozyme and fibrinogen at multiple concentrations, as well as the ability to detect avidin in a concentration-dependent fashion. Ellipsometry, contact angle measurement, fluorescence microscopy, and optical resonator characterization methods were used to study non-specific adsorption, the quality of the functionalized surface, and the biosensor’s performance. Using a recognition element ratio to nonfouling element ratio of 1:1, we showed that non-specific adsorption could be significantly reduced over the controls, and that high sensitivity could be maintained. Due to the frequent use of biotin-avidin-biotin sandwich complexes in functionalizing sensor surfaces with biotin-labeled recognition elements, this chemistry could provide a common basis for creating a non-fouling surface capable of targeted detection. This should improve the ability of WGM optical biosensors to operate in complex environments, extending their application towards real-world detection.
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Affiliation(s)
- Fanyongjing Wang
- Department of Bioengineering, University of Missouri, Columbia, MO 65201, USA.
| | - Mark Anderson
- Department of Biochemistry, University of Missouri, Columbia, MO 65201, USA.
| | - Matthew T Bernards
- Department of Chemical Engineering, University of Missouri, Columbia, MO 65201, USA.
| | - Heather K Hunt
- Department of Bioengineering, University of Missouri, Columbia, MO 65201, USA.
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18
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Fang Y. Total internal reflection fluorescence quantification of receptor pharmacology. Biosensors (Basel) 2015; 5:223-40. [PMID: 25922915 PMCID: PMC4493547 DOI: 10.3390/bios5020223] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/22/2015] [Revised: 04/15/2015] [Accepted: 04/17/2015] [Indexed: 12/30/2022]
Abstract
Total internal reflection fluorescence (TIRF) microscopy has been widely used as a single molecule imaging technique to study various fundamental aspects of cell biology, owing to its ability to selectively excite a very thin fluorescent volume immediately above the substrate on which the cells are grown. However, TIRF microscopy has found little use in high content screening due to its complexity in instrumental setup and experimental procedures. Inspired by the recent demonstration of label-free evanescent wave biosensors for cell phenotypic profiling and drug screening with high throughput, we had hypothesized and demonstrated that TIRF imaging is also amenable to receptor pharmacology profiling. This paper reviews key considerations and recent applications of TIRF imaging for pharmacology profiling.
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Affiliation(s)
- Ye Fang
- Biochemical Technologies, Science and Technology Division, Corning Incorporated, Corning, NY 14831, USA.
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19
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Affiliation(s)
- Ye Fang
- Corning Inc., Biochemical Technologies, Science and Technology Division, Corning, NY 14831, USA
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20
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Wang J, Hou T, Wei L, Shi L, He J, Zhou N, Sun G, Zhang X, Liang X. Discovery of new targets of phenolic acids in danshen using a label-free cell phenotypic assay. RSC Adv 2015. [DOI: 10.1039/c4ra16102e] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Pharmacological profiling of 10 known phenolic acids in danshen using a label-free cell phenotypic assay in HT-29 and A431 cells revealed that lithospermic acid, salvianolic acid A, B, C and danshensu all displayed agonistic activity towards GPR35.
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Affiliation(s)
- Jixia Wang
- Key Lab of Separation Science for Analytical Chemistry
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian
- China
| | - Tao Hou
- Institute of Materia Medica
- Dalian University
- Dalian
- China
| | - Lai Wei
- Key Lab of Separation Science for Analytical Chemistry
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian
- China
| | - Liying Shi
- Institute of Materia Medica
- Dalian University
- Dalian
- China
| | - Jian He
- Key Lab of Separation Science for Analytical Chemistry
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian
- China
| | - Nan Zhou
- Department of Oral Pathology
- College of Stomatology
- Dalian Medical University
- Dalian
- China
| | - Guangwei Sun
- Key Lab of Separation Science for Analytical Chemistry
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian
- China
| | - Xiuli Zhang
- Key Lab of Separation Science for Analytical Chemistry
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian
- China
| | - Xinmiao Liang
- Key Lab of Separation Science for Analytical Chemistry
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian
- China
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21
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Fang Y, French J, Zhao H, Benkovic S. G-protein-coupled receptor regulation of de novo purine biosynthesis: a novel druggable mechanism. Biotechnol Genet Eng Rev 2014; 29:31-48. [PMID: 24568251 DOI: 10.1080/02648725.2013.801237] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Spatial organization of metabolic enzymes may represent a general cellular mechanism to regulate metabolic flux. One recent example of this type of cellular phenomenon is the purinosome, a newly discovered multi-enzyme metabolic assembly that includes all of the enzymes within the de novo purine biosynthetic pathway. Our understanding of the components and regulation of purinosomes has significantly grown in recent years. This paper reviews the purine de novo biosynthesis pathway and its regulation, and presents the evidence supporting the purinosome assembly and disassembly processes under the control of G-protein-coupled receptor (GPCR) signaling. This paper also discusses the implications of purinosome and GPCR regulation in drug discovery.
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Affiliation(s)
- Ye Fang
- a Biochemical Technologies, Science and Technology Division , Corning Incorporated , Corning , New York , USA
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22
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Sun H, Wei Y, Deng H, Xiong Q, Li M, Lahiri J, Fang Y. Label-free cell phenotypic profiling decodes the composition and signaling of an endogenous ATP-sensitive potassium channel. Sci Rep 2014; 4:4934. [PMID: 24816792 DOI: 10.1038/srep04934] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2014] [Accepted: 04/24/2014] [Indexed: 11/27/2022] Open
Abstract
Current technologies for studying ion channels are fundamentally limited because of their inability to functionally link ion channel activity to cellular pathways. Herein, we report the use of label-free cell phenotypic profiling to decode the composition and signaling of an endogenous ATP-sensitive potassium ion channel (KATP) in HepG2C3A, a hepatocellular carcinoma cell line. Label-free cell phenotypic agonist profiling showed that pinacidil triggered characteristically similar dynamic mass redistribution (DMR) signals in A431, A549, HT29 and HepG2C3A, but not in HepG2 cells. Reverse transcriptase PCR, RNAi knockdown, and KATP blocker profiling showed that the pinacidil DMR is due to the activation of SUR2/Kir6.2 KATP channels in HepG2C3A cells. Kinase inhibition and RNAi knockdown showed that the pinacidil activated KATP channels trigger signaling through Rho kinase and Janus kinase-3, and cause actin remodeling. The results are the first demonstration of a label-free methodology to characterize the composition and signaling of an endogenous ATP-sensitive potassium ion channel.
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23
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Ferrie AM, Wang C, Deng H, Fang Y. A label-free optical biosensor with microfluidics identifies an intracellular signalling wave mediated through the β(2)-adrenergic receptor. Integr Biol (Camb) 2014; 5:1253-61. [PMID: 23989552 DOI: 10.1039/c3ib40112j] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The canonical model of G protein-coupled receptor (GPCR) signalling states that it is solely initiated at the cell surface. In recent years, a handful of evidence has started emerging from high-resolution molecular assays that the internalized receptors can mediate the third wave of signalling, besides G protein- and β-arrestin-mediated signalling both initiating at the cell surface. However, little is known about the functional consequences of distinct waves of GPCR signalling, in particular, at the whole cell system level. We here report the development of label-free biosensor antagonist reverse assays and their use to differentiate the signalling waves of an endogenous β2-adrenergic receptor (β2-AR) in A431 cells. Results showed that the persistent agonist treatment activated the β2-ARs, leading to a long-term sustained dynamic mass redistribution (DMR) signal, a whole cell phenotypic response. Under the persistent treatment scheme in microplates, a panel of known β-blockers all dose-dependently and completely reversed the DMR signal of epinephrine at a relatively low dose (10 nM), except for sotalol which partially reversed the DMR. Under the perfusion conditions with microfluidics, the subsequent perfusion with sotalol only reversed the DMR induced by epinephrine or isoproterenol at 10 nM, but not at 10 μM. Furthermore, the degree of the DMR reversion by sotalol was found to be in an opposite relation with the duration of the initial agonist treatment. Together, these results suggest that the hydrophilic antagonist sotalol is constrained outside the cells throughout the assays, and the early signalling wave initiated at the cell surface dominates the DMR induced by epinephrine or isoproterenol at relatively low doses, while a secondary and late signalling wave is initiated once the receptors are internalized and contributes partially to the long-term sustainability of the DMR of epinephrine or isoproterenol at high doses.
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Affiliation(s)
- Ann M Ferrie
- Biochemical Technologies, Science and Technology Division, Corning Incorporated, Corning, NY 14831, USA.
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24
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Abstract
Current drug discovery is dominated by label-dependent molecular approaches, which screen drugs in the context of a predefined and target-based hypothesis in vitro. Given that target-based discovery has not transformed the industry, phenotypic screen that identifies drugs based on a specific phenotype of cells, tissues, or animals has gained renewed interest. However, owing to the intrinsic complexity in drug-target interactions, there is often a significant gap between the phenotype screened and the ultimate molecular mechanism of action sought. This paper presents a label-free strategy for early drug discovery. This strategy combines label-free cell phenotypic profiling with computational approaches, and holds promise to bridge the gap by offering a kinetic and holistic representation of the functional consequences of drugs in disease relevant cells that is amenable to mechanistic deconvolution.
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Affiliation(s)
- Ye Fang
- Biochemical Technologies, Science and Technology Division, Corning Incorporated Corning, NY, USA
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25
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Nørskov-Lauritsen L, Thomsen ARB, Bräuner-Osborne H. G protein-coupled receptor signaling analysis using homogenous time-resolved Förster resonance energy transfer (HTRF®) technology. Int J Mol Sci 2014; 15:2554-72. [PMID: 24531140 PMCID: PMC3958867 DOI: 10.3390/ijms15022554] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Revised: 01/17/2014] [Accepted: 01/28/2014] [Indexed: 11/18/2022] Open
Abstract
Studying multidimensional signaling of G protein-coupled receptors (GPCRs) in search of new and better treatments requires flexible, reliable and sensitive assays in high throughput screening (HTS) formats. Today, more than half of the detection techniques used in HTS are based on fluorescence, because of the high sensitivity and rich signal, but quenching, optical interferences and light scattering are serious drawbacks. In the 1990s the HTRF® (Cisbio Bioassays, Codolet, France) technology based on Förster resonance energy transfer (FRET) in a time-resolved homogeneous format was developed. This improved technology diminished the traditional drawbacks. The optimized protocol described here based on HTRF® technology was used to study the activation and signaling pathways of the calcium-sensing receptor, CaSR, a GPCR responsible for maintaining calcium homeostasis. Stimulation of the CaSR by agonists activated several pathways, which were detected by measuring accumulation of the second messengers D-myo-inositol 1-phosphate (IP1) and cyclic adenosine 3',5'-monophosphate (cAMP), and by measuring the phosphorylation of extracellular signal-regulated kinase 1 and 2 (ERK1/2). Here we show how an optimized HTRF® platform with numerous advantages compared to previous assays provides a substantial and robust mode of investigating GPCR signaling. It is furthermore discussed how these assays can be optimized and miniaturized to meet HTS requirements and for screening compound libraries.
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Affiliation(s)
- Lenea Nørskov-Lauritsen
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Fruebjergvej 3, Mailbox 10, Copenhagen DK-2100, Denmark.
| | - Alex Rojas Bie Thomsen
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Fruebjergvej 3, Mailbox 10, Copenhagen DK-2100, Denmark.
| | - Hans Bräuner-Osborne
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Fruebjergvej 3, Mailbox 10, Copenhagen DK-2100, Denmark.
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26
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Ferrie AM, Sun H, Zaytseva N, Fang Y. Divergent label-free cell phenotypic pharmacology of ligands at the overexpressed β₂-adrenergic receptors. Sci Rep 2014; 4:3828. [PMID: 24451999 PMCID: PMC3899747 DOI: 10.1038/srep03828] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2013] [Accepted: 01/06/2014] [Indexed: 01/14/2023] Open
Abstract
We present subclone sensitive cell phenotypic pharmacology of ligands at the β2-adrenergic receptor (β2-AR) stably expressed in HEK-293 cells. The parental cell line was transfected with green fluorescent protein (GFP)-tagged β2-AR. Four stable subclones were established and used to profile a library of sixty-nine AR ligands. Dynamic mass redistribution (DMR) profiling resulted in a pharmacological activity map suggesting that HEK293 endogenously expresses functional Gi-coupled α2-AR and Gs-coupled β2-AR, and the label-free cell phenotypic activity of AR ligands are subclone dependent. Pathway deconvolution revealed that the DMR of epinephrine is originated mostly from the remodeling of actin microfilaments and adhesion complexes, to less extent from the microtubule networks and receptor trafficking, and certain agonists displayed different efficacy towards the cAMP-Epac pathway. We demonstrate that receptor signaling and ligand pharmacology is sensitive to the receptor expression level, and the organization of the receptor and its signaling circuitry.
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Affiliation(s)
- Ann M Ferrie
- 1] Biochemical Technologies, Science and Technology Division, Corning Incorporated, Corning, NY 14831, United States of America [2]
| | - Haiyan Sun
- 1] Biochemical Technologies, Science and Technology Division, Corning Incorporated, Corning, NY 14831, United States of America [2] [3]
| | - Natalya Zaytseva
- Biochemical Technologies, Science and Technology Division, Corning Incorporated, Corning, NY 14831, United States of America
| | - Ye Fang
- Biochemical Technologies, Science and Technology Division, Corning Incorporated, Corning, NY 14831, United States of America
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27
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Zhang X, Deng H, Xiao Y, Xue X, Ferrie AM, Tran E, Liang X, Fang Y. Label-free cell phenotypic profiling identifies pharmacologically active compounds in two traditional Chinese medicinal plants. RSC Adv 2014. [DOI: 10.1039/c4ra03609c] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Label-free cell phenotypic profiling with three cell lines identified multiple pharmacologically active compounds including niacin in two TCM plants.
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Affiliation(s)
- Xiuli Zhang
- Key Laboratory of Separation Science for Analytical Chemistry
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian, China
| | - Huayun Deng
- Biochemical Technologies
- Science and Technology Division
- Corning Incorporated
- Corning, USA
| | - Yuansheng Xiao
- Key Laboratory of Separation Science for Analytical Chemistry
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian, China
| | - Xingya Xue
- Key Laboratory of Separation Science for Analytical Chemistry
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian, China
| | - Ann M. Ferrie
- Biochemical Technologies
- Science and Technology Division
- Corning Incorporated
- Corning, USA
| | - Elizabeth Tran
- Biochemical Technologies
- Science and Technology Division
- Corning Incorporated
- Corning, USA
| | - Xinmiao Liang
- Key Laboratory of Separation Science for Analytical Chemistry
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian, China
| | - Ye Fang
- Biochemical Technologies
- Science and Technology Division
- Corning Incorporated
- Corning, USA
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28
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Zaytseva N, Lynn JG, Wu Q, Mudaliar DJ, Sun H, Kuang PQ, Fang Y. Resonant waveguide grating biosensor-enabled label-free and fluorescence detection of cell adhesion. Sens Actuators B Chem 2013; 188:10.1016/j.snb.2013.08.012. [PMID: 24319319 PMCID: PMC3852437 DOI: 10.1016/j.snb.2013.08.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Cell adhesion to extracellular matrix (ECM) is fundamental to many distinct aspects of cell biology, and has been an active topic for label-free biosensors. However, little attention has been paid to study the impact of receptor signaling on the cell adhesion process. We here report the development of resonant waveguide grating biosensor-enabled label-free and fluorescent approaches, and their use for investigating the adhesion of an engineered HEK-293 cell line stably expressing green fluorescent protein (GFP) tagged β2-adrenergic receptor (β2-AR) onto distinct surfaces under both ambient and physiological conditions. Results showed that cell adhesion is sensitive to both temperature and ECM coating, and distinct mechanisms govern the cell adhesion process under different conditions. The β2-AR agonists, but not its antagonists or partial agonists, were found to be capable of triggering signaling during the adhesion process, leading to an increase in the adhesion of the engineered cells onto fibronectin-coated biosensor surfaces. These results suggest that the dual approach presented is useful to investigate the mechanism of cell adhesion, and to identify drug molecules and receptor signaling that interfere with cell adhesion.
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Affiliation(s)
- Natalya Zaytseva
- Biochemical Technologies, Science and Technology Division, Corning Incorporated, Corning, New York 14831, USA
| | - Jeffery G. Lynn
- Biochemical Technologies, Science and Technology Division, Corning Incorporated, Corning, New York 14831, USA
| | - Qi Wu
- Biochemical Technologies, Science and Technology Division, Corning Incorporated, Corning, New York 14831, USA
| | | | | | - Patty Q. Kuang
- Biochemical Technologies, Science and Technology Division, Corning Incorporated, Corning, New York 14831, USA
| | - Ye Fang
- Biochemical Technologies, Science and Technology Division, Corning Incorporated, Corning, New York 14831, USA
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Honarparvar B, Govender T, Maguire GEM, Soliman MES, Kruger HG. Integrated Approach to Structure-Based Enzymatic Drug Design: Molecular Modeling, Spectroscopy, and Experimental Bioactivity. Chem Rev 2013; 114:493-537. [DOI: 10.1021/cr300314q] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Bahareh Honarparvar
- Catalysis
and Peptide Research Unit and ‡School of Health Sciences, University of KwaZulu Natal, Durban 4001, South Africa
| | - Thavendran Govender
- Catalysis
and Peptide Research Unit and ‡School of Health Sciences, University of KwaZulu Natal, Durban 4001, South Africa
| | - Glenn E. M. Maguire
- Catalysis
and Peptide Research Unit and ‡School of Health Sciences, University of KwaZulu Natal, Durban 4001, South Africa
| | - Mahmoud E. S. Soliman
- Catalysis
and Peptide Research Unit and ‡School of Health Sciences, University of KwaZulu Natal, Durban 4001, South Africa
| | - Hendrik G. Kruger
- Catalysis
and Peptide Research Unit and ‡School of Health Sciences, University of KwaZulu Natal, Durban 4001, South Africa
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Deng H, Sun H, Fang Y. Label-free cell phenotypic assessment of the biased agonism and efficacy of agonists at the endogenous muscarinic M3 receptors. J Pharmacol Toxicol Methods 2013; 68:323-33. [PMID: 23933114 DOI: 10.1016/j.vascn.2013.07.005] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2013] [Revised: 07/26/2013] [Accepted: 07/30/2013] [Indexed: 01/14/2023]
Abstract
INTRODUCTION Efficacy describes the property of a ligand that enables the receptor to change its behavior towards the host cell, while biased agonism defines the ability of a ligand to differentially activate some of the vectorial pathways over others mediated through the receptor. However, little is known about the molecular basis defining the efficacy of ligands at G protein-coupled receptors. Here we characterize the biased agonism and cell phenotypic efficacy of seven agonists at the endogenous muscarinic M3 receptors in six different cell lines including HT-29, PC-3, HeLa, SF268, CCRF-CEM and HCT-15 cells. METHODS Quantitative real-time PCR and multiple label-free whole cell dynamic mass redistribution (DMR) assays were used to determine the functional muscarinic receptors in each cell line. DMR pathway deconvolution assay was used to determine the pathway biased activity of the muscarinic agonists. Operational agonism model was used to quantify the pathway bias, while macro-kinetic data reported in literature was used to analyze the biochemical mechanism of action of these agonists. RESULTS Quantitative real-time PCR and ligand pharmacology studies showed that all the native cell lines endogenously express functional M3 receptors. Furthermore, different agonists triggered distinct DMR signals in a specific cell line as well as in different cell lines. DMR pathway deconvolution using known G protein modulators revealed that the M3 receptor in all the six cell lines signals through multiple G protein-mediated pathways, and certain agonists display biased agonism in a cell line-dependent manner. The whole cell efficacy and potency of these agonists were found to be sensitive to the assay time as well as the cell background. Correlation analysis suggested that the whole cell efficacy of agonists is correlated well with their macro-dissociation rate constants. DISCUSSION This study implicates that the endogenous M3 receptors are coupled to multiple pathways, and the muscarinic agonists can display distinct biased agonism and whole cell phenotypic efficacy.
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Affiliation(s)
- Huayun Deng
- Biochemical Technologies, Science and Technology Division, Corning Incorporated, Corning, NY 14831, United States
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Deng H, Fang Y. The Three Catecholics Benserazide, Catechol and Pyrogallol are GPR35 Agonists. Pharmaceuticals (Basel) 2013; 6:500-9. [PMID: 24276120 PMCID: PMC3816702 DOI: 10.3390/ph6040500] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2013] [Revised: 03/20/2013] [Accepted: 04/01/2013] [Indexed: 11/16/2022] Open
Abstract
Nearly 1% of all clinically used drugs are catecholics, a family of catechol-containing compounds. Using label-free dynamic mass redistribution and Tango β-arrestin translocation assays, we show that several catecholics, including benserazide, catechol, 3-methoxycatechol, pyrogallol, (+)-taxifolin and fenoldopam, display agonistic activity against GPR35.
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Affiliation(s)
- Huayun Deng
- Biochemical Technologies, Science and Technology Division, Corning Inc., Corning, NY 14831, USA.
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Morse M, Sun H, Tran E, Levenson R, Fang Y. Label-free integrative pharmacology on-target of opioid ligands at the opioid receptor family. BMC Pharmacol Toxicol 2013; 14:17. [PMID: 23497702 PMCID: PMC3602246 DOI: 10.1186/2050-6511-14-17] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2012] [Accepted: 10/31/2012] [Indexed: 01/08/2023] Open
Abstract
Background In vitro pharmacology of ligands is typically assessed using a variety of molecular assays based on predetermined molecular events in living cells. Many ligands including opioid ligands pose the ability to bind more than one receptor, and can also provide distinct operational bias to activate a specific receptor. Generating an integrative overview of the binding and functional selectivity of ligands for a receptor family is a critical but difficult step in drug discovery and development. Here we applied a newly developed label-free integrative pharmacology on-target (iPOT) approach to systematically survey the selectivity of a library of fifty-five opioid ligands against the opioid receptor family. All ligands were interrogated using dynamic mass redistribution (DMR) assays in both recombinant and native cell lines that express specific opioid receptor(s). The cells were modified with a set of probe molecules to manifest the binding and functional selectivity of ligands. DMR profiles were collected and translated to numerical coordinates that was subject to similarity analysis. A specific set of opioid ligands were then selected for quantitative pharmacology determination. Results Results showed that among fifty-five opioid ligands examined most ligands displayed agonist activity in at least one opioid receptor expressing cell line under different conditions. Further, many ligands exhibited pathway biased agonism. Conclusion We demonstrate that the iPOT effectively sorts the ligands into distinct clusters based on their binding and functional selectivity at the opioid receptor family.
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Affiliation(s)
- Megan Morse
- Department of Pharmacology, Pennsylvania State University College of Medicine, Hershey, PA, USA
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Fang Y. Troubleshooting and deconvoluting label-free cell phenotypic assays in drug discovery. J Pharmacol Toxicol Methods 2013; 67:69-81. [PMID: 23340025 DOI: 10.1016/j.vascn.2013.01.004] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2012] [Revised: 12/10/2012] [Accepted: 01/04/2013] [Indexed: 01/04/2023]
Abstract
INTRODUCTION Central to drug discovery and development is to comprehend the target(s), potency, efficacy and safety of drug molecules using pharmacological assays. Owing to their ability to provide a holistic view of drug actions in native cells, label-free biosensor-enabled cell phenotypic assays have been emerging as new generation phenotypic assays for drug discovery. Despite the benefits associated with wide pathway coverage, high sensitivity, high information content, non-invasiveness and real-time kinetics, label-free cell phenotypic assays are often viewed to be a blackbox in the era of target-centric drug discovery. METHODS This article first reviews the biochemical and biological complexity of drug-target interactions, and then discusses the key characteristics of label-free cell phenotypic assays and presents a five-step strategy to troubleshooting and deconvoluting the label-free cell phenotypic profiles of drugs. RESULTS Drug-target interactions are intrinsically complicated. Label-free cell phenotypic signatures of drugs mirror the innate complexity of drug-target interactions, and can be effectively deconvoluted using the five-step strategy. DISCUSSION The past decades have witnessed dramatic expansion of pharmacological assays ranging from molecular to phenotypic assays, which is coincident with the realization of the innate complexity of drug-target interactions. The clinical features of a drug are defined by how it operates at the system level and by its distinct polypharmacology, ontarget, phenotypic and network pharmacology. Approaches to examine the biochemical, cellular and molecular mechanisms of action of drugs are essential to increase the efficiency of drug discovery and development. Label-free cell phenotypic assays and the troubleshooting and deconvoluting approach presented here may hold great promise in drug discovery and development.
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Deng H, Wang C, Fang Y. Label-free cell phenotypic assessment of the molecular mechanism of action of epidermal growth factor receptor inhibitors. RSC Adv 2013. [DOI: 10.1039/c3ra40426a] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
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Deng H, Wang C, Su M, Fang Y. Probing Biochemical Mechanisms of Action of Muscarinic M3 Receptor Antagonists with Label-Free Whole Cell Assays. Anal Chem 2012; 84:8232-9. [DOI: 10.1021/ac301495n] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Huayun Deng
- Biochemical Technologies, Science
and Technology Division, Corning Inc.,
Corning, New York 14831, United States
| | - Chaoming Wang
- Biochemical Technologies, Science
and Technology Division, Corning Inc.,
Corning, New York 14831, United States
- NanoScience Technology Center,
Department of Mechanical, Materials and Aerospace Engineering, University of Central Florida, Orlando, Florida 32816,
United States
| | - Ming Su
- NanoScience Technology Center,
Department of Mechanical, Materials and Aerospace Engineering, University of Central Florida, Orlando, Florida 32816,
United States
| | - Ye Fang
- Biochemical Technologies, Science
and Technology Division, Corning Inc.,
Corning, New York 14831, United States
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Abstract
INTRODUCTION The study of drug-target interactions is essential for the understanding of biological processes and for the efforts to develop new therapeutic molecules. Increased ligand-binding assays have coincided with the advances in reagents, detection and instrumentation technologies, the expansion in therapeutic targets of interest, and the increasingly recognized importance of biochemical aspects of drug-target interactions in determining the clinical performance of drug molecules. Nowadays, ligand-binding assays can determine every aspect of many drug-target interactions. AREAS COVERED Given that ligand-target interactions are very diverse, the author has decided to focus on the binding of small molecules to protein targets. This article first reviews the key biochemical aspects of drug-target interactions, and then discusses the detection principles of various ligand-binding techniques in the context of their primary applications for drug discovery and development. EXPERT OPINION Equilibrium-binding affinity should not be used as a solo indicator for the in vivo pharmacology of drugs. The clinical relevance of drug-binding kinetics demands high throughput kinetics early in drug discovery. The dependence of ligand binding and function on the conformation of targets necessitates solution-based and whole cell-based ligand-binding assays. The increasing need to examine ligand binding at the proteome level, driven by the clinical importance of the polypharmacology of ligands, has started to make the structure-based in silico binding screen an indispensable technique for drug discovery and development. Integration of different ligand-binding assays is important to improve the efficiency of the drug discovery and development process.
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Affiliation(s)
- Ye Fang
- Biochemical Technologies, Science and Technology Division, Corning, Inc., Corning, NY 14831, USA.
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Deng H, Fang Y. Synthesis and Agonistic Activity at the GPR35 of 5,6-Dihydroxyindole-2-carboxylic Acid Analogues. ACS Med Chem Lett 2012; 3:550-4. [PMID: 24900508 DOI: 10.1021/ml300076u] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2012] [Accepted: 06/06/2012] [Indexed: 11/29/2022] Open
Abstract
5,6-Dihydroxyindole-2-carboxylic acid (DHICA), an intermediate of melanin synthesis and an eumelanin building block, was recently discovered to be a GPR35 agonist with moderate potency. Here, we report the synthesis and pharmacological characterization of a series of DHICA analogues against GPR35 using both label-free dynamic mass redistribution and Tango β-arrestin translocation assays. This led to identification of novel GPR35 agonists with improved potency and/or having biased agonism.
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Affiliation(s)
- Huayun Deng
- Biochemical Technologies, Science and Technology Division, Corning Inc., Corning, New York 14831, United States
| | - Ye Fang
- Biochemical Technologies, Science and Technology Division, Corning Inc., Corning, New York 14831, United States
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Deng H, Hu J, Hu H, He M, Fang Y. Thieno[3,2-b]thiophene-2-carboxylic acid derivatives as GPR35 agonists. Bioorg Med Chem Lett 2012; 22:4148-52. [DOI: 10.1016/j.bmcl.2012.04.057] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2012] [Revised: 04/04/2012] [Accepted: 04/10/2012] [Indexed: 10/28/2022]
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Abstract
Both kynurenic acid and 2-acyl lysophosphatidic acid have been postulated to be the endogenous agonists of GPR35. However, controversy remains whether alternative endogenous agonists exist. The molecular targets accounted for many nongenomic actions of thyroid hormones are mostly unknown. Here we report the agonist activity of multiple tyrosine metabolites at the GPR35. Tyrosine metabolism intermediates that contain carboxylic acid and/or catechol functional groups were first selected. Whole cell dynamic mass redistribution (DMR) assays enabled by label-free optical biosensor were then used to characterize their agonist activity in native HT-29. Molecular assays including β-arrestin translocation, ERK phosphorylation and receptor internalization confirmed that GPR35 functions as a receptor for 5,6-dihydroxyindole-2-carboxylic acid, 3,3',5'-triiodothyronine, 3,3',5-triiodothyronine, gentisate, rosmarinate, and 3-nitrotyrosine. These results suggest that multiple tyrosine metabolites are alternative endogenous ligands of GPR35, and GPR35 may represent a druggable target for treating certain diseases associated with abnormality of tyrosine metabolism.
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Deng H, Hu H, Ling S, Ferrie AM, Fang Y. Discovery of Natural Phenols as G Protein-Coupled Receptor-35 (GPR35) Agonists. ACS Med Chem Lett 2012; 3:165-9. [PMID: 24900447 DOI: 10.1021/ml2003058] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2011] [Accepted: 01/17/2012] [Indexed: 01/09/2023] Open
Abstract
We report the discovery and characterization of natural phenols as G protein-coupled receptor-35 (GPR35) agonists. Pharmacological characterization using label-free dynamic mass redistribution and Tango β-arrestin translocation assays revealed that GPR35-active natural phenols are divergent in their biased agonism.
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Affiliation(s)
- Huayun Deng
- Biochemical Technologies, Science and Technology Division,
Corning Inc., Corning, New York 14831, United States
| | - Haibei Hu
- Biochemical Technologies, Science and Technology Division,
Corning Inc., Corning, New York 14831, United States
| | - Shizhang Ling
- Biochemical Technologies, Science and Technology Division,
Corning Inc., Corning, New York 14831, United States
| | - Ann M. Ferrie
- Biochemical Technologies, Science and Technology Division,
Corning Inc., Corning, New York 14831, United States
| | - Ye Fang
- Biochemical Technologies, Science and Technology Division,
Corning Inc., Corning, New York 14831, United States
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