1
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Fleming CL, Benitez-Martin C, Bernson E, Xu Y, Kristenson L, Inghardt T, Lundbäck T, Thorén FB, Grøtli M, Andréasson J. All-photonic kinase inhibitors: light-controlled release-and-report inhibition. Chem Sci 2024; 15:6897-6905. [PMID: 38725520 PMCID: PMC11077529 DOI: 10.1039/d4sc00390j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Accepted: 04/05/2024] [Indexed: 05/12/2024] Open
Abstract
Light-responsive molecular tools targeting kinases affords one the opportunity to study the underlying cellular function of selected kinases. In efforts to externally control lymphocyte-specific protein tyrosine kinase (LCK) activity, the development of release-and-report LCK inhibitors is described, in which (i) the release of the active kinase inhibitor can be controlled externally with light; and (ii) fluorescence is employed to report both the release and binding of the active kinase inhibitor. This introduces an unprecedented all-photonic method for users to both control and monitor real-time inhibitory activity. A functional cellular assay demonstrated light-mediated LCK inhibition in natural killer cells. The use of coumarin-derived caging groups resulted in rapid cellular uptake and non-specific intracellular localisation, while a BODIPY-derived caging group predominately localised in the cellular membrane. This concept of release-and-report inhibitors has the potential to be extended to other biorelevant targets where both spatiotemporal control in a cellular setting and a reporting mechanism would be beneficial.
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Affiliation(s)
- Cassandra L Fleming
- Department of Chemistry and Chemical Engineering, Physical Chemistry, Chalmers University of Technology SE-41296 Göteborg Sweden
- Department of Chemistry and Molecular Biology, University of Gothenburg Box 462 SE-40530 Göteborg Sweden
| | - Carlos Benitez-Martin
- Department of Chemistry and Chemical Engineering, Physical Chemistry, Chalmers University of Technology SE-41296 Göteborg Sweden
| | - Elin Bernson
- TIMM Laboratory at Sahlgrenska Centre for Cancer Research, Department of Obstetrics and Gynecology, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg SE-41296 Göteborg Sweden
| | - Yongjin Xu
- Department of Chemistry and Molecular Biology, University of Gothenburg Box 462 SE-40530 Göteborg Sweden
| | - Linnea Kristenson
- TIMM Laboratory, Sahlgrenska Centre for Cancer Research, Department of Infectious Diseases, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg SE-41296 Göteborg Sweden
| | - Tord Inghardt
- Cardiovascular, Renal and Metabolism, Innovative Medicines and Early Development, AstraZeneca SE-43183 Mölndal Sweden
| | - Thomas Lundbäck
- Mechanistic and Structural Biology, Discovery Sciences, R&D, AstraZeneca SE-43183 Mölndal Sweden
| | - Fredrik B Thorén
- TIMM Laboratory, Sahlgrenska Centre for Cancer Research, Department of Medical Biochemistry and Cell Biology, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg SE-41296 Göteborg Sweden
| | - Morten Grøtli
- Department of Chemistry and Molecular Biology, University of Gothenburg Box 462 SE-40530 Göteborg Sweden
| | - Joakim Andréasson
- Department of Chemistry and Chemical Engineering, Physical Chemistry, Chalmers University of Technology SE-41296 Göteborg Sweden
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2
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Prasad PK, Eizenshtadt N, Goliand I, Fellus-Alyagor L, Oren R, Golani O, Motiei L, Margulies D. Chemically programmable bacterial probes for the recognition of cell surface proteins. Mater Today Bio 2023; 20:100669. [PMID: 37334185 PMCID: PMC10275978 DOI: 10.1016/j.mtbio.2023.100669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 05/01/2023] [Accepted: 05/17/2023] [Indexed: 06/20/2023] Open
Abstract
Common methods to label cell surface proteins (CSPs) involve the use of fluorescently modified antibodies (Abs) or small-molecule-based ligands. However, optimizing the labeling efficiency of such systems, for example, by modifying them with additional fluorophores or recognition elements, is challenging. Herein we show that effective labeling of CSPs overexpressed in cancer cells and tissues can be obtained with fluorescent probes based on chemically modified bacteria. The bacterial probes (B-probes) are generated by non-covalently linking a bacterial membrane protein to DNA duplexes appended with fluorophores and small-molecule binders of CSPs overexpressed in cancer cells. We show that B-probes are exceptionally simple to prepare and modify because they are generated from self-assembled and easily synthesized components, such as self-replicating bacterial scaffolds and DNA constructs that can be readily appended, at well-defined positions, with various types of dyes and CSP binders. This structural programmability enabled us to create B-probes that can label different types of cancer cells with distinct colors, as well as generate very bright B-probes in which the multiple dyes are spatially separated along the DNA scaffold to avoid self-quenching. This enhancement in the emission signal enabled us to label the cancer cells with greater sensitivity and follow the internalization of the B-probes into these cells. The potential to apply the design principles underlying B-probes in therapy or inhibitor screening is also discussed here.
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Affiliation(s)
- Pragati K. Prasad
- Department of Chemical and Structural Biology, Weizmann Institute of Science Rehovot, 7610001, Israel
| | - Noa Eizenshtadt
- Department of Chemical and Structural Biology, Weizmann Institute of Science Rehovot, 7610001, Israel
| | - Inna Goliand
- Life Sciences Core Facilities, Weizmann Institute of Science, Rehovot, 7610001, Israel
| | - Liat Fellus-Alyagor
- Department of Veterinary Resources, Weizmann Institute of Science, Rehovot, 7610001, Israel
| | - Roni Oren
- Department of Veterinary Resources, Weizmann Institute of Science, Rehovot, 7610001, Israel
| | - Ofra Golani
- Life Sciences Core Facilities, Weizmann Institute of Science, Rehovot, 7610001, Israel
| | - Leila Motiei
- Department of Chemical and Structural Biology, Weizmann Institute of Science Rehovot, 7610001, Israel
| | - David Margulies
- Department of Chemical and Structural Biology, Weizmann Institute of Science Rehovot, 7610001, Israel
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3
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Mohamed M, Klenke AK, Anokhin MV, Amadou H, Bothwell PJ, Conroy B, Nesterov EE, Nesterova IV. Zero-Background Small-Molecule Sensors for Near-IR Fluorescent Imaging of Biomacromolecular Targets in Cells. ACS Sens 2023; 8:1109-1118. [PMID: 36866808 PMCID: PMC10515643 DOI: 10.1021/acssensors.2c02342] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/04/2023]
Abstract
In this study, we report a general approach to the design of a new generation of small-molecule sensors that produce a zero background but are brightly fluorescent in the near-IR spectral range upon selective interaction with a biomolecular target. We developed a fluorescence turn-on/-off mechanism based on the aggregation/deaggregation of phthalocyanine chromophores. As a proof of concept, we designed, prepared, and characterized sensors for in-cell visualization of epidermal growth factor receptor (EGFR) tyrosine kinase. We established a structure/bioavailability correlation, determined conditions for the optimal sensor uptake and imaging, and demonstrated binding specificity and applications over a wide range of treatment options involving live and fixed cells. The new approach enables high-contrast imaging and requires no in-cell chemical assembly or postexposure manipulations (i.e., washes). The general design principles demonstrated in this work can be extended toward sensors and imaging agents for other biomolecular targets.
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Affiliation(s)
- Myar Mohamed
- Department of Chemistry and Biochemistry, Northern Illinois University, DeKalb, IL 60115, USA
| | - Anastasia K. Klenke
- Department of Chemistry and Biochemistry, Northern Illinois University, DeKalb, IL 60115, USA
| | - Maksim V. Anokhin
- Department of Chemistry and Biochemistry, Northern Illinois University, DeKalb, IL 60115, USA
| | - Harouna Amadou
- Department of Chemistry and Biochemistry, Northern Illinois University, DeKalb, IL 60115, USA
| | - Paige J. Bothwell
- Department of Chemistry and Biochemistry, Northern Illinois University, DeKalb, IL 60115, USA
| | - Brigid Conroy
- Department of Chemistry and Biochemistry, Northern Illinois University, DeKalb, IL 60115, USA
| | - Evgueni E. Nesterov
- Department of Chemistry and Biochemistry, Northern Illinois University, DeKalb, IL 60115, USA
| | - Irina V. Nesterova
- Department of Chemistry and Biochemistry, Northern Illinois University, DeKalb, IL 60115, USA
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4
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Zhang J, Wu YJ, Hu XX, Wei W. New insights into the Lck-NF-κB signaling pathway. Front Cell Dev Biol 2023; 11:1120747. [PMID: 36910149 PMCID: PMC9999026 DOI: 10.3389/fcell.2023.1120747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Accepted: 02/15/2023] [Indexed: 03/14/2023] Open
Abstract
Lck is essential for the development, activity, and proliferation of T cells, which may contribute to pathological progression and development of human diseases, such as autoimmune disorders and cancers when functioning aberrantly. Nuclear factor-κB (NF-κB) was initially discovered as a factor bound to the κ light-chain immunoglobulin enhancer in the nuclei of activated B lymphocytes. Activation of the nuclear factor-κB pathway controls expression of several genes that are related to cell survival, apoptosis, and inflammation. Abnormal expression of Lck and nuclear factor-κB has been found in autoimmune diseases and malignancies, including rheumatoid arthritis, systemic lupus erythematosus, acute T cell lymphocytic leukemia, and human chronic lymphocytic leukemia, etc. Nuclear factor-κB inhibition is effective against autoimmune diseases and malignancies through blocking inflammatory responses, although it may lead to serious adverse reactions that are unexpected and unwanted. Further investigation of the biochemical and functional interactions between nuclear factor-κB and other signaling pathways may be helpful to prevent side-effects. This review aims to clarify the Lck-nuclear factor-κB signaling pathway, and provide a basis for identification of new targets and therapeutic approaches against autoimmune diseases and malignancies.
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Affiliation(s)
- Jing Zhang
- Department of Pharmacy, The First Affiliated Hospital of Anhui Medical University, Hefei, China.,Key Laboratory of Anti-Inflammatory and Immune Medicine, Anhui Collaborative Innovation Center of Anti-Inflammatory and Immune Medicine, Ministry of Education, Institute of Clinical Pharmacology, Anhui Medical University, Hefei, China
| | - Yu-Jing Wu
- Key Laboratory of Anti-Inflammatory and Immune Medicine, Anhui Collaborative Innovation Center of Anti-Inflammatory and Immune Medicine, Ministry of Education, Institute of Clinical Pharmacology, Anhui Medical University, Hefei, China
| | - Xiao-Xi Hu
- Key Laboratory of Anti-Inflammatory and Immune Medicine, Anhui Collaborative Innovation Center of Anti-Inflammatory and Immune Medicine, Ministry of Education, Institute of Clinical Pharmacology, Anhui Medical University, Hefei, China
| | - Wei Wei
- Key Laboratory of Anti-Inflammatory and Immune Medicine, Anhui Collaborative Innovation Center of Anti-Inflammatory and Immune Medicine, Ministry of Education, Institute of Clinical Pharmacology, Anhui Medical University, Hefei, China
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Abstract
Fluorescent dyes attached to kinase inhibitors (KIs) can be used to probe kinases in vitro, in cells, and in vivo. Ideal characteristics of the dyes vary with their intended applications. Fluorophores used in vitro may inform on kinase active site environments, hence the dyes used should be small and have minimal impact on modes of binding. These probes may have short wavelength emissions since blue fluorophores are perfectly adequate in this context. Thus, for instance, KI fragments that mimic nucleobases may be modified to be fluorescent with minimal perturbation to the kinase inhibitor structure. However, progressively larger dyes, that emit at longer wavelengths, are required for cellular and in vivo work. In cells, it is necessary to have emissions above autofluorescence of biomolecules, and near infrared dyes are needed to enable excitation and observation through tissue in vivo. This review is organized to describe probes intended for applications in vitro, in cells, then in vivo. The readers will observe that the probes featured tend to become larger and responsive to the near infared end of the spectrum as the review progresses. Readers may also be surprised to realize that relatively few dyes have been used for fluorophore-kinase inhibitor conjugates, and the area is open for innovations in the types of fluorophores used.
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Affiliation(s)
- Syed Muhammad Usama
- Department of Chemistry, Texas A&M University, Box 30012, College Station, TX 77842, USA.
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6
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Elkamhawy A, Ali EMH, Lee K. New horizons in drug discovery of lymphocyte-specific protein tyrosine kinase (Lck) inhibitors: a decade review (2011-2021) focussing on structure-activity relationship (SAR) and docking insights. J Enzyme Inhib Med Chem 2021; 36:1574-1602. [PMID: 34233563 PMCID: PMC8274522 DOI: 10.1080/14756366.2021.1937143] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Lymphocyte-specific protein tyrosine kinase (Lck), a non-receptor Src family kinase, has a vital role in various cellular processes such as cell cycle control, cell adhesion, motility, proliferation, and differentiation. Lck is reported as a key factor regulating the functions of T-cell including the initiation of TCR signalling, T-cell development, in addition to T-cell homeostasis. Alteration in expression and activity of Lck results in numerous disorders such as cancer, asthma, diabetes, rheumatoid arthritis, atherosclerosis, and neuronal diseases. Accordingly, Lck has emerged as a novel target against different diseases. Herein, we amass the research efforts in literature and pharmaceutical patents during the last decade to develop new Lck inhibitors. Additionally, structure-activity relationship studies (SAR) and docking models of these new inhibitors within the active site of Lck were demonstrated offering deep insights into their different binding modes in a step towards the identification of more potent, selective, and safe Lck inhibitors.
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Affiliation(s)
- Ahmed Elkamhawy
- College of Pharmacy, Dongguk University-Seoul, Goyang, Republic of Korea.,Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - Eslam M H Ali
- Center for Biomaterials, Korea Institute of Science & Technology (KIST School), Seoul, Republic of Korea.,University of Science & Technology (UST), Daejeon, Republic of Korea.,Pharmaceutical Chemistry Department, Faculty of Pharmacy, Modern University for Technology and Information (MTI), Cairo, Egypt
| | - Kyeong Lee
- College of Pharmacy, Dongguk University-Seoul, Goyang, Republic of Korea
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7
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Lassagne F, Sims JM, Erb W, Mongin O, Richy N, El Osmani N, Fajloun Z, Picot L, Thiéry V, Robert T, Bach S, Dorcet V, Roisnel T, Mongin F. Thiazolo[5,4‐
f
]quinoxalines, Oxazolo[5,4‐
f
]quinoxalines and Pyrazino[
b,e
]isatins: Synthesis from 6‐Aminoquinoxalines and Properties. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100362] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Frédéric Lassagne
- Univ. Rennes CNRS, ISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226 35000 Rennes France
| | - Joshua M. Sims
- Univ. Rennes CNRS, ISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226 35000 Rennes France
- Univ. Lyon, ENS de Lyon, CNRS UMR 5182 Université Claude Bernard Lyon 1, Laboratoire de Chimie 69342 Lyon France
| | - William Erb
- Univ. Rennes CNRS, ISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226 35000 Rennes France
| | - Olivier Mongin
- Univ. Rennes CNRS, ISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226 35000 Rennes France
| | - Nicolas Richy
- Univ. Rennes CNRS, ISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226 35000 Rennes France
| | - Nour El Osmani
- Laboratory of Applied Biotechnology (LBA3B), Azm Center for Research in Biotechnology and its Applications, EDST Lebanese University 1300 Tripoli Lebanon
| | - Ziad Fajloun
- Laboratory of Applied Biotechnology (LBA3B), Azm Center for Research in Biotechnology and its Applications, EDST Lebanese University 1300 Tripoli Lebanon
- Faculty of Sciences 3 Lebanese University, Campus Michel Slayman 1352 Ras Maska – Tripoli Lebanon
| | - Laurent Picot
- La Rochelle Université Laboratoire Littoral Environnement et Sociétés, UMRi CNRS 7266 17042 La Rochelle France
| | - Valérie Thiéry
- La Rochelle Université Laboratoire Littoral Environnement et Sociétés, UMRi CNRS 7266 17042 La Rochelle France
| | - Thomas Robert
- Sorbonne Université CNRS, FR2424, Plateforme de criblage KISSf (Kinase Inhibitor Specialized Screening facility), Station Biologique de Roscoff Place Georges Teissier 29682 Roscoff France
- Sorbonne Université CNRS, UMR 8227, Integrative Biology of Marine Models, Station Biologique de Roscoff, CS 90074 29688 Roscoff Cedex France
| | - Stéphane Bach
- Sorbonne Université CNRS, FR2424, Plateforme de criblage KISSf (Kinase Inhibitor Specialized Screening facility), Station Biologique de Roscoff Place Georges Teissier 29682 Roscoff France
- Sorbonne Université CNRS, UMR 8227, Integrative Biology of Marine Models, Station Biologique de Roscoff, CS 90074 29688 Roscoff Cedex France
- Centre of Excellence for Pharmaceutical Sciences North-West University, Private Bag X6001 Potchefstroom 2520 South Africa
| | - Vincent Dorcet
- Univ. Rennes CNRS, ISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226 35000 Rennes France
| | - Thierry Roisnel
- Univ. Rennes CNRS, ISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226 35000 Rennes France
| | - Florence Mongin
- Univ. Rennes CNRS, ISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226 35000 Rennes France
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8
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Simeth NA, Kinateder T, Rajendran C, Nazet J, Merkl R, Sterner R, König B, Kneuttinger AC. Towards Photochromic Azobenzene-Based Inhibitors for Tryptophan Synthase. Chemistry 2021; 27:2439-2451. [PMID: 33078454 PMCID: PMC7898615 DOI: 10.1002/chem.202004061] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 10/16/2020] [Indexed: 01/25/2023]
Abstract
Light regulation of drug molecules has gained growing interest in biochemical and pharmacological research in recent years. In addition, a serious need for novel molecular targets of antibiotics has emerged presently. Herein, the development of a photocontrollable, azobenzene-based antibiotic precursor towards tryptophan synthase (TS), an essential metabolic multienzyme complex in bacteria, is presented. The compound exhibited moderately strong inhibition of TS in its E configuration and five times lower inhibition strength in its Z configuration. A combination of biochemical, crystallographic, and computational analyses was used to characterize the inhibition mode of this compound. Remarkably, binding of the inhibitor to a hitherto-unconsidered cavity results in an unproductive conformation of TS leading to noncompetitive inhibition of tryptophan production. In conclusion, we created a promising lead compound for combatting bacterial diseases, which targets an essential metabolic enzyme, and whose inhibition strength can be controlled with light.
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Affiliation(s)
- Nadja A. Simeth
- Institute for Organic ChemistryDepartment of Chemistry and PharmacyUniversity of RegensburgUniversitätsstrasse 3193040RegensburgGermany
- Stratingh Institute for ChemistryFaculty of Science and EngineeringUniversity of GroningenNijenborgh 49747AGGroningenThe Netherlands
| | - Thomas Kinateder
- Institute for Biophysics and Physical BiochemistryRegensburg Center for BiochemistryUniversity of RegensburgUniversitätsstrasse 3193040RegensburgGermany
| | - Chitra Rajendran
- Institute for Biophysics and Physical BiochemistryRegensburg Center for BiochemistryUniversity of RegensburgUniversitätsstrasse 3193040RegensburgGermany
| | - Julian Nazet
- Institute for Biophysics and Physical BiochemistryRegensburg Center for BiochemistryUniversity of RegensburgUniversitätsstrasse 3193040RegensburgGermany
| | - Rainer Merkl
- Institute for Biophysics and Physical BiochemistryRegensburg Center for BiochemistryUniversity of RegensburgUniversitätsstrasse 3193040RegensburgGermany
| | - Reinhard Sterner
- Institute for Biophysics and Physical BiochemistryRegensburg Center for BiochemistryUniversity of RegensburgUniversitätsstrasse 3193040RegensburgGermany
| | - Burkhard König
- Institute for Organic ChemistryDepartment of Chemistry and PharmacyUniversity of RegensburgUniversitätsstrasse 3193040RegensburgGermany
| | - Andrea C. Kneuttinger
- Institute for Biophysics and Physical BiochemistryRegensburg Center for BiochemistryUniversity of RegensburgUniversitätsstrasse 3193040RegensburgGermany
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9
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Zhang L, Gong X, Tian C, Fu H, Tan H, Dai J, Cui M. Near-Infrared Fluorescent Probes with Rotatable Polyacetylene Chains for the Detection of Amyloid-β Plaques. J Phys Chem B 2021; 125:497-506. [PMID: 33415984 DOI: 10.1021/acs.jpcb.0c08845] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The plaques of accumulated β-amyloid (Aβ) in the parenchymal brain are accepted as an important biomarker for the early diagnosis of Alzheimer's disease (AD). Many near-infrared (NIR) probes, which were based on the D-π-A structure and bridged by conjugated double bonds, had been reported and displayed a high affinity to Aβ plaques. Considering the isomerization caused by the polyethylene chain, however, the conjugated polyacetylene chain is a better choice for developing new NIR Aβ probes. Hence, in this report, a new series of NIR probes with naphthyl or phenyl rings and different numbers of conjugated triple bonds were designed, synthesized, and evaluated as NIR probes for Aβ plaques. Upon interaction with Aβ aggregates, these probes displayed a significant increase in fluorescence intensity (45- to 360-fold) and a high to moderate affinity (6.05-56.62 nM). Among them, probe 22b displayed excellent fluorescent properties with a 183-fold increase in fluorescence intensity and an emission maximum at 650 nm after incubated with Aβ aggregates. Furthermore, 22b had a high affinity to Aβ aggregates (Kd = 12.96 nM) and could efficiently detect the Aβ plaques in brain sections from both transgenic mice and AD patients in vitro. In summary, this work may lead to a new direction in the development of novel NIR probes for the detection of Aβ plaques.
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Affiliation(s)
- Longfei Zhang
- Key Laboratory of Radiopharmaceuticals, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Xin Gong
- Key Laboratory of Radiopharmaceuticals, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Chuan Tian
- Key Laboratory of Radiopharmaceuticals, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Hualong Fu
- Key Laboratory of Radiopharmaceuticals, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Hongwei Tan
- Key Laboratory of Radiopharmaceuticals, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Jiapei Dai
- Wuhan Institute for Neuroscience and Neuroengineering, South-Central University for Nationalities, Wuhan 430074, China
| | - Mengchao Cui
- Key Laboratory of Radiopharmaceuticals, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, China
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10
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Fleming CL, Sandoz PA, Inghardt T, Önfelt B, Grøtli M, Andréasson J. A Fluorescent Kinase Inhibitor that Exhibits Diagnostic Changes in Emission upon Binding. Angew Chem Int Ed Engl 2019; 58:15000-15004. [PMID: 31411364 PMCID: PMC6851755 DOI: 10.1002/anie.201909536] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Indexed: 02/03/2023]
Abstract
The development of a fluorescent LCK inhibitor that exhibits favourable solvatochromic properties upon binding the kinase is described. Fluorescent properties were realised through the inclusion of a prodan-derived fluorophore into the pharmacophore of an ATP-competitive kinase inhibitor. Fluorescence titration experiments demonstrate the solvatochromic properties of the inhibitor, in which dramatic increase in emission intensity and hypsochromic shift in emission maxima are clearly observed upon binding LCK. Microscopy experiments in cellular contexts together with flow cytometry show that the fluorescence intensity of the inhibitor correlates with the LCK concentration. Furthermore, multiphoton microscopy experiments demonstrate both the rapid cellular uptake of the inhibitor and that the two-photon cross section of the inhibitor is amenable for excitation at 700 nm.
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Affiliation(s)
- Cassandra L. Fleming
- Department of Chemistry and Chemical EngineeringPhysical ChemistryChalmers University of Technology41296GöteborgSweden
- Department of Chemistry and Molecular BiologyUniversity of Gothenburg41296GöteborgSweden
| | - Patrick A. Sandoz
- Department of Applied PhysicsScience for Life LaboratoryKTH Royal Institute of Technology10691StockholmSweden
| | - Tord Inghardt
- Medicinal Chemistry, Research and Early Development Cardiovascular, Renal and Metabolism, BioPharmaceuticals R&DAstraZenecaGothenburgSweden
| | - Björn Önfelt
- Department of Applied PhysicsScience for Life LaboratoryKTH Royal Institute of Technology10691StockholmSweden
- Department of Microbiology, Tumor and Cell BiologyKarolinska Institute17177StockholmSweden
| | - Morten Grøtli
- Department of Chemistry and Molecular BiologyUniversity of Gothenburg41296GöteborgSweden
| | - Joakim Andréasson
- Department of Chemistry and Chemical EngineeringPhysical ChemistryChalmers University of Technology41296GöteborgSweden
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