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McKenna SM, Florea BI, Zisterer DM, van Kasteren SI, McGouran JF. Probing the metalloproteome: an 8-mercaptoquinoline motif enriches minichromosome maintenance complex components as significant metalloprotein targets in live cells. RSC Chem Biol 2024; 5:776-786. [PMID: 39092446 PMCID: PMC11289876 DOI: 10.1039/d4cb00053f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Accepted: 06/18/2024] [Indexed: 08/04/2024] Open
Abstract
Affinity-based probes are valuable tools for detecting binding interactions between small molecules and proteins in complex biological environments. Metalloproteins are a class of therapeutically significant biomolecules which bind metal ions as part of key structural or catalytic domains and are compelling targets for study. However, there is currently a limited range of chemical tools suitable for profiling the metalloproteome. Here, we describe the preparation and application of a novel, photoactivatable affinity-based probe for detection of a subset of previously challenging to engage metalloproteins. The probe, bearing an 8-mercaptoquinoline metal chelator, was anticipated to engage several zinc metalloproteins, including the 26S-proteasome subunit Rpn11. Upon translation of the labelling experiment to mammalian cell lysate and live cell experiments, proteomic analysis revealed that several metalloproteins were competitively enriched. The diazirine probe SMK-24 was found to effectively enrich multiple components of the minichromosome maintenance complex, a zinc metalloprotein assembly with helicase activity essential to DNA replication. Cell cycle analysis experiments revealed that HEK293 cells treated with SMK-24 experienced stalling in G0/G1 phase, consistent with inactivation of the DNA helicase complex. This work represents an important contribution to the library of cell-permeable chemical tools for studying a collection of metalloproteins for which no previous probe existed.
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Affiliation(s)
- Sean M McKenna
- School of Chemistry, Trinity Biomedical Sciences Institute, Trinity College Dublin 152-160 Pearse St Dublin 2 Ireland
- Synthesis and Solid State Pharmaceutical Centre (SSPC) Ireland
| | - Bogdan I Florea
- Department of Bioorganic Synthesis, Leiden Institute of Chemistry, Leiden University Einsteinweg 55 2333 CC Leiden The Netherlands
| | - Daniela M Zisterer
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin 152-160 Pearse St Dublin 2 Ireland
| | - Sander I van Kasteren
- Department of Bioorganic Synthesis, Leiden Institute of Chemistry, Leiden University Einsteinweg 55 2333 CC Leiden The Netherlands
| | - Joanna F McGouran
- School of Chemistry, Trinity Biomedical Sciences Institute, Trinity College Dublin 152-160 Pearse St Dublin 2 Ireland
- Synthesis and Solid State Pharmaceutical Centre (SSPC) Ireland
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2
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Klett T, Schwer M, Ernst LN, Engelhardt MU, Jaag SJ, Masberg B, Knappe C, Lämmerhofer M, Gehringer M, Boeckler FM. Evaluation of a Covalent Library of Diverse Warheads (CovLib) Binding to JNK3, USP7, or p53. Drug Des Devel Ther 2024; 18:2653-2679. [PMID: 38974119 PMCID: PMC11226190 DOI: 10.2147/dddt.s466829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2024] [Accepted: 06/12/2024] [Indexed: 07/09/2024] Open
Abstract
Purpose Over the last few years, covalent fragment-based drug discovery has gained significant importance. Thus, striving for more warhead diversity, we conceived a library consisting of 20 covalently reacting compounds. Our covalent fragment library (CovLib) contains four different warhead classes, including five α-cyanoacacrylamides/acrylates (CA), three epoxides (EO), four vinyl sulfones (VS), and eight electron-deficient heteroarenes with a leaving group (SNAr/SN). Methods After predicting the theoretical solubility of the fragments by LogP and LogS during the selection process, we determined their experimental solubility using a turbidimetric solubility assay. The reactivities of the different compounds were measured in a high-throughput 5,5'-dithiobis-(2-nitrobenzoic acid) DTNB assay, followed by a (glutathione) GSH stability assay. We employed the CovLib in a (differential scanning fluorimetry) DSF-based screening against different targets: c-Jun N-terminal kinase 3 (JNK3), ubiquitin-specific protease 7 (USP7), and the tumor suppressor p53. Finally, the covalent binding was confirmed by intact protein mass spectrometry (MS). Results In general, the purchased fragments turned out to be sufficiently soluble. Additionally, they covered a broad spectrum of reactivity. All investigated α-cyanoacrylamides/acrylates and all structurally confirmed epoxides turned out to be less reactive compounds, possibly due to steric hindrance and reversibility (for α-cyanoacrylamides/acrylates). The SNAr and vinyl sulfone fragments are either highly reactive or stable. DSF measurements with the different targets JNK3, USP7, and p53 identified reactive fragment hits causing a shift in the melting temperatures of the proteins. MS confirmed the covalent binding mode of all these fragments to USP7 and p53, while additionally identifying the SNAr-type electrophile SN002 as a mildly reactive covalent hit for p53. Conclusion The screening and target evaluation of the CovLib revealed first interesting hits. The highly cysteine-reactive fragments VS004, SN001, SN006, and SN007 covalently modify several target proteins and showed distinct shifts in the melting temperatures up to +5.1 °C and -9.1 °C.
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Affiliation(s)
- Theresa Klett
- Laboratory for Molecular Design & Pharmaceutical Biophysics, Institute of Pharmaceutical Sciences, Department of Pharmacy and Biochemistry, Eberhard Karls Universität Tübingen, Tübingen, 72076, Germany
| | - Martin Schwer
- Laboratory for Molecular Design & Pharmaceutical Biophysics, Institute of Pharmaceutical Sciences, Department of Pharmacy and Biochemistry, Eberhard Karls Universität Tübingen, Tübingen, 72076, Germany
| | - Larissa N Ernst
- Laboratory for Molecular Design & Pharmaceutical Biophysics, Institute of Pharmaceutical Sciences, Department of Pharmacy and Biochemistry, Eberhard Karls Universität Tübingen, Tübingen, 72076, Germany
| | - Marc U Engelhardt
- Laboratory for Molecular Design & Pharmaceutical Biophysics, Institute of Pharmaceutical Sciences, Department of Pharmacy and Biochemistry, Eberhard Karls Universität Tübingen, Tübingen, 72076, Germany
| | - Simon J Jaag
- Pharmaceutical (Bio-) Analysis, Institute of Pharmaceutical Sciences, Department of Pharmacy and Biochemistry, Eberhard Karls Universität Tübingen, Tübingen, 72076, Germany
| | - Benedikt Masberg
- Pharmaceutical (Bio-) Analysis, Institute of Pharmaceutical Sciences, Department of Pharmacy and Biochemistry, Eberhard Karls Universität Tübingen, Tübingen, 72076, Germany
| | - Cornelius Knappe
- Pharmaceutical (Bio-) Analysis, Institute of Pharmaceutical Sciences, Department of Pharmacy and Biochemistry, Eberhard Karls Universität Tübingen, Tübingen, 72076, Germany
| | - Michael Lämmerhofer
- Pharmaceutical (Bio-) Analysis, Institute of Pharmaceutical Sciences, Department of Pharmacy and Biochemistry, Eberhard Karls Universität Tübingen, Tübingen, 72076, Germany
| | - Matthias Gehringer
- Pharmaceutical Chemistry, Institute of Pharmaceutical Sciences, Department of Pharmacy and Biochemistry, Eberhard Karls Universität Tübingen, Tübingen, 72076, Germany
- Medicinal Chemistry, Institute for Biomedical Engineering, Eberhard Karls Universität Tübingen, Tübingen, 72076, Germany
| | - Frank M Boeckler
- Laboratory for Molecular Design & Pharmaceutical Biophysics, Institute of Pharmaceutical Sciences, Department of Pharmacy and Biochemistry, Eberhard Karls Universität Tübingen, Tübingen, 72076, Germany
- Interfaculty Institute for Biomedical Informatics (IBMI), Eberhard Karls Universität Tübingen, Tübingen, 72076, Germany
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Zhou J, Hao J, Wang D, Wu J, Wang Z, Lin P, Hou J. Ligand reaction-based fluorescent peptide probes for the detection of Cu 2+ and glutathione. LUMINESCENCE 2024; 39:e4671. [PMID: 38286599 DOI: 10.1002/bio.4671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Accepted: 12/11/2023] [Indexed: 01/31/2024]
Abstract
Copper is a critical element in both human and animal metabolic processes. Its role includes supporting connective tissue cross-linking, as well as iron and lipid metabolism; at the same time, copper is also a toxic heavy metal that can cause harm to both the environment and human health. Glutathione (GSH) is a tripeptide composed of glutamic acid, cysteine, and glycine combined with sulfhydryl groups. Its properties include acting as an antioxidant and facilitating integrative detoxification. GSH is present in both plant and animal cells and has a fundamental role in maintaining living organisms. GSH is the most abundant thiol antioxidant in the human body. It exists in reduced and oxidized forms within cells and provides significant biochemical functions, such as regulating vitamins such as vitamins D, E, and C, and facilitating detoxification. A fluorescent probe has been developed to detect copper ions selectively, sensitively, and rapidly. This report outlines the successful work on creating a peptide probe, TGN (TPE-Trp-Pro-Gly-Cln-His-NH2 ), with specific Cu2+ detection capabilities, and a significant fluorescence recovery occurred with the addition of GSH. This indicates that the probe can detect Cu2+ and GSH concurrently. The detection limit for Cu2+ in the buffer solution was 264 nM (R2 = 0.9992), and the detection limit for GSH using the TGN-Cu2+ complex was 919 nM (R2 = 0.9917). The probe exhibits high cell permeability and low biotoxicity that make it ideal for live cell imaging in biological conditions. This peptide probe has the capability to detect Cu2+ and GSH in biological cells.
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Affiliation(s)
- Jiang Zhou
- Key Laboratory for Tibet Plateau Phytochemistry of Qinghai Province, College of Pharmacy, Qinghai Nationalities University, Xining, China
| | - Junlei Hao
- Key Laboratory for Tibet Plateau Phytochemistry of Qinghai Province, College of Pharmacy, Qinghai Nationalities University, Xining, China
| | - Dajiang Wang
- Department of Pharmacy, West China Hospital, Sichuan University, Chengdu, China
| | - Jiang Wu
- Key Laboratory for Tibet Plateau Phytochemistry of Qinghai Province, College of Pharmacy, Qinghai Nationalities University, Xining, China
| | - Zhongchang Wang
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Institute of Artificial Intelligence Biomedicine, Engineering Research Center of Protein and Peptide Medicine, Nanjing University, Nanjing, China
| | - Pengcheng Lin
- Key Laboratory for Tibet Plateau Phytochemistry of Qinghai Province, College of Pharmacy, Qinghai Nationalities University, Xining, China
| | - Jingcheng Hou
- Key Laboratory for Tibet Plateau Phytochemistry of Qinghai Province, College of Pharmacy, Qinghai Nationalities University, Xining, China
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Blochouse E, Eid R, Araji N, Tuo W, Châtre R, Papot S, Lévêque N, Thuillier R, Poinot P. VOC-Based Probes, a New Set of Analytical Tools to Monitor Patient Health from Blood Sample. Proof of Concept on Tracking COVID-19 Infection. Anal Chem 2023; 95:11572-11577. [PMID: 37405898 DOI: 10.1021/acs.analchem.3c01732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/07/2023]
Abstract
Induced volatolomics is an emerging field that holds promise for many biomedical applications including disease detection and prognosis. In this pilot study, we report the first use of a cocktail of volatile organic compounds (VOCs)-based probes to highlight new metabolic markers allowing disease prognosis. In this pilot study, we specifically targeted a set of circulating glycosidases whose activities could be associated with critical COVID-19 illness. Starting from blood sample collection, our approach relies on the incubation of VOC-based probes in plasma samples. Once activated, the probes released a set of VOCs in the sample headspace. The dynamic monitoring of the signals of VOC tracers enabled the identification of three dysregulated glycosidases in the initial phase after infection, for which preliminary machine learning analyses suggested an ability to anticipate critical disease development. This study demonstrates that our VOC-based probes are a new set of analytical tools that can provide access to biological signals until now unavailable to biologists and clinicians and which could be included in biomedical research to properly construct multifactorial therapy algorithms, necessary for personalized medicine.
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Affiliation(s)
- Estelle Blochouse
- University of Poitiers, UMR CNRS 7285, Institut de Chimie des Milieux et Matériaux de Poitiers (IC2MP), 4 rue Michel-Brunet, TSA 51106, 86073 Poitiers cedex 9, France
| | - Rony Eid
- University of Poitiers, UMR CNRS 7285, Institut de Chimie des Milieux et Matériaux de Poitiers (IC2MP), 4 rue Michel-Brunet, TSA 51106, 86073 Poitiers cedex 9, France
| | - Nahla Araji
- University of Poitiers, UMR CNRS 7285, Institut de Chimie des Milieux et Matériaux de Poitiers (IC2MP), 4 rue Michel-Brunet, TSA 51106, 86073 Poitiers cedex 9, France
| | - Wei Tuo
- University of Poitiers, UMR CNRS 7285, Institut de Chimie des Milieux et Matériaux de Poitiers (IC2MP), 4 rue Michel-Brunet, TSA 51106, 86073 Poitiers cedex 9, France
| | - Rémi Châtre
- University of Poitiers, UMR CNRS 7285, Institut de Chimie des Milieux et Matériaux de Poitiers (IC2MP), 4 rue Michel-Brunet, TSA 51106, 86073 Poitiers cedex 9, France
| | - Sébastien Papot
- University of Poitiers, UMR CNRS 7285, Institut de Chimie des Milieux et Matériaux de Poitiers (IC2MP), 4 rue Michel-Brunet, TSA 51106, 86073 Poitiers cedex 9, France
| | - Nicolas Lévêque
- University of Poitiers, Laboratoire de Virologie et Mycobactériologie, CHU de Poitiers, UR 15560/LITEC, 2 rue Milétrie, 86000 Poitiers, France
| | - Raphaël Thuillier
- Faculty of Medicine and Pharmacy, University of Poitiers, F-86021 Poitiers, France
- Inserm UMR U1313, Ischémie Reperfusion, Métabolisme et Inflammation Stérile en Transplantation (IRMETIST), F-86021 Poitiers, France
- Biochemistry Department, CHU Poitiers, F-86021 Poitiers, France
| | - Pauline Poinot
- University of Poitiers, UMR CNRS 7285, Institut de Chimie des Milieux et Matériaux de Poitiers (IC2MP), 4 rue Michel-Brunet, TSA 51106, 86073 Poitiers cedex 9, France
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Calvert SH, McGouran JF. Rapid capture of small peptide binders. Nat Rev Chem 2023; 7:534-535. [PMID: 37434011 DOI: 10.1038/s41570-023-00517-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/13/2023]
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Châtre R, Blochouse E, Eid R, Djago F, Lange J, Tarighi M, Renoux B, Sobilo J, Le Pape A, Clarhaut J, Geffroy C, Opalinski I, Tuo W, Papot S, Poinot P. Induced-volatolomics for the design of tumour activated therapy. Chem Sci 2023; 14:4697-4703. [PMID: 37181780 PMCID: PMC10171039 DOI: 10.1039/d2sc06797h] [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: 12/09/2022] [Accepted: 04/07/2023] [Indexed: 05/16/2023] Open
Abstract
The discovery of tumour-associated markers is of major interest for the development of selective cancer chemotherapy. Within this framework, we introduced the concept of induced-volatolomics enabling to monitor simultaneously the dysregulation of several tumour-associated enzymes in living mice or biopsies. This approach relies on the use of a cocktail of volatile organic compound (VOC)-based probes that are activated enzymatically for releasing the corresponding VOCs. Exogenous VOCs can then be detected in the breath of mice or in the headspace above solid biopsies as specific tracers of enzyme activities. Our induced-volatolomics modality highlighted that the up-regulation of N-acetylglucosaminidase was a hallmark of several solid tumours. Having identified this glycosidase as a potential target for cancer therapy, we designed an enzyme-responsive albumin-binding prodrug of the potent monomethyl auristatin E programmed for the selective release of the drug in the tumour microenvironment. This tumour activated therapy produced a remarkable therapeutic efficacy on orthotopic triple-negative mammary xenografts in mice, leading to the disappearance of tumours in 66% of treated animals. Thus, this study shows the potential of induced-volatolomics for the exploration of biological processes as well as the discovery of novel therapeutic strategies.
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Affiliation(s)
- Rémi Châtre
- University of Poitiers, UMR CNRS 7285, Institut de Chimie des Milieux et Matériaux de Poitiers (IC2MP), Equipe Labellisée Ligue Contre le Cancer 4 Rue Michel-Brunet, TSA 51106 86073 Poitiers Cedex 9 France
| | - Estelle Blochouse
- University of Poitiers, UMR CNRS 7285, Institut de Chimie des Milieux et Matériaux de Poitiers (IC2MP), Equipe Labellisée Ligue Contre le Cancer 4 Rue Michel-Brunet, TSA 51106 86073 Poitiers Cedex 9 France
| | - Rony Eid
- University of Poitiers, UMR CNRS 7285, Institut de Chimie des Milieux et Matériaux de Poitiers (IC2MP), Equipe Labellisée Ligue Contre le Cancer 4 Rue Michel-Brunet, TSA 51106 86073 Poitiers Cedex 9 France
| | - Fabiola Djago
- University of Poitiers, UMR CNRS 7285, Institut de Chimie des Milieux et Matériaux de Poitiers (IC2MP), Equipe Labellisée Ligue Contre le Cancer 4 Rue Michel-Brunet, TSA 51106 86073 Poitiers Cedex 9 France
| | - Justin Lange
- University of Poitiers, UMR CNRS 7285, Institut de Chimie des Milieux et Matériaux de Poitiers (IC2MP), Equipe Labellisée Ligue Contre le Cancer 4 Rue Michel-Brunet, TSA 51106 86073 Poitiers Cedex 9 France
| | - Mehrad Tarighi
- University of Poitiers, UMR CNRS 7285, Institut de Chimie des Milieux et Matériaux de Poitiers (IC2MP), Equipe Labellisée Ligue Contre le Cancer 4 Rue Michel-Brunet, TSA 51106 86073 Poitiers Cedex 9 France
| | - Brigitte Renoux
- University of Poitiers, UMR CNRS 7285, Institut de Chimie des Milieux et Matériaux de Poitiers (IC2MP), Equipe Labellisée Ligue Contre le Cancer 4 Rue Michel-Brunet, TSA 51106 86073 Poitiers Cedex 9 France
| | - Julien Sobilo
- UAR No. 44 PHENOMIN TAAM-Imagerie In Vivo, CNRS 3B Rue de la Férollerie F-45071 Orléans France
| | - Alain Le Pape
- UAR No. 44 PHENOMIN TAAM-Imagerie In Vivo, CNRS 3B Rue de la Férollerie F-45071 Orléans France
| | - Jonathan Clarhaut
- University of Poitiers, UMR CNRS 7285, Institut de Chimie des Milieux et Matériaux de Poitiers (IC2MP), Equipe Labellisée Ligue Contre le Cancer 4 Rue Michel-Brunet, TSA 51106 86073 Poitiers Cedex 9 France
- CHU de Poitiers 2 Rue de la Miléterie, CS 90577 F-86021 Poitiers France
| | - Claude Geffroy
- University of Poitiers, UMR CNRS 7285, Institut de Chimie des Milieux et Matériaux de Poitiers (IC2MP), Equipe Labellisée Ligue Contre le Cancer 4 Rue Michel-Brunet, TSA 51106 86073 Poitiers Cedex 9 France
| | - Isabelle Opalinski
- University of Poitiers, UMR CNRS 7285, Institut de Chimie des Milieux et Matériaux de Poitiers (IC2MP), Equipe Labellisée Ligue Contre le Cancer 4 Rue Michel-Brunet, TSA 51106 86073 Poitiers Cedex 9 France
| | - Wei Tuo
- University of Poitiers, UMR CNRS 7285, Institut de Chimie des Milieux et Matériaux de Poitiers (IC2MP), Equipe Labellisée Ligue Contre le Cancer 4 Rue Michel-Brunet, TSA 51106 86073 Poitiers Cedex 9 France
| | - Sébastien Papot
- University of Poitiers, UMR CNRS 7285, Institut de Chimie des Milieux et Matériaux de Poitiers (IC2MP), Equipe Labellisée Ligue Contre le Cancer 4 Rue Michel-Brunet, TSA 51106 86073 Poitiers Cedex 9 France
- Seekyo SA 2 Avenue Galilée, BP 30153 86961 Futuroscope France
| | - Pauline Poinot
- University of Poitiers, UMR CNRS 7285, Institut de Chimie des Milieux et Matériaux de Poitiers (IC2MP), Equipe Labellisée Ligue Contre le Cancer 4 Rue Michel-Brunet, TSA 51106 86073 Poitiers Cedex 9 France
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Proteins through the eyes of an organic chemist. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.133022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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