1
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Kollár L, Grabrijan K, Hrast Rambaher M, Bozovičar K, Imre T, Ferenczy GG, Gobec S, Keserű GM. Boronic acid inhibitors of penicillin-binding protein 1b: serine and lysine labelling agents. J Enzyme Inhib Med Chem 2024; 39:2305833. [PMID: 38410950 PMCID: PMC10901194 DOI: 10.1080/14756366.2024.2305833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 01/08/2024] [Indexed: 02/28/2024] Open
Abstract
Penicillin-binding proteins (PBPs) contribute to bacterial cell wall biosynthesis and are targets of antibacterial agents. Here, we investigated PBP1b inhibition by boronic acid derivatives. Chemical starting points were identified by structure-based virtual screening and aliphatic boronic acids were selected for further investigations. Structure-activity relationship studies focusing on the branching of the boron-connecting carbon and quantum mechanical/molecular mechanical simulations showed that reaction barrier free energies are compatible with fast reversible covalent binding and small or missing reaction free energies limit the inhibitory activity of the investigated boronic acid derivatives. Therefore, covalent labelling of the lysine residue of the catalytic dyad was also investigated. Compounds with a carbonyl warhead and an appropriately positioned boronic acid moiety were shown to inhibit and covalently label PBP1b. Reversible covalent labelling of the catalytic lysine by imine formation and the stabilisation of the imine by dative N-B bond is a new strategy for PBP1b inhibition.
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Affiliation(s)
- Levente Kollár
- Medicinal Chemistry Research Group, Research Centre for Natural Sciences, Budapest, Hungary
- Department of Organic Chemistry and Technology, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Budapest, Hungary
| | | | | | | | - Tímea Imre
- MS Metabolomics Research Group, Research Centre for Natural Sciences, Budapest, Hungary
| | - György G Ferenczy
- Medicinal Chemistry Research Group, Research Centre for Natural Sciences, Budapest, Hungary
| | - Stanislav Gobec
- Faculty of Pharmacy, University of Ljubljana, Ljubljana, Slovenia
| | - György M Keserű
- Medicinal Chemistry Research Group, Research Centre for Natural Sciences, Budapest, Hungary
- Department of Organic Chemistry and Technology, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Budapest, Hungary
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2
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Szepesi Kovács D, Pásztor B, Ábrányi-Balogh P, Petri L, Imre T, Simon J, Tátrai E, Várady G, Tóvári J, Szijj PA, Keserű GM. Site-Selective Antibody Conjugation with Dibromopyrazines. Bioconjug Chem 2024. [PMID: 39151068 DOI: 10.1021/acs.bioconjchem.4c00296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/18/2024]
Abstract
In recent years, antibody conjugates have evolved as state-of-the-art options for diagnostic and therapeutic applications. During site-selective antibody conjugation, incomplete rebridging of antibody chains limits the homogeneity of conjugates and calls for the development of new rebridging agents. Herein, we report a dibromopyrazine derivative optimized to reach highly homogeneous conjugates rapidly and with high conversion on rebridging of trastuzumab, even providing a feasible route for antibody modification in acidic conditions. Furthermore, coupling a fluorescent dye and a cytotoxic drug resulted in effective antibody conjugates with excellent serum stability and in vitro selectivity, demonstrating the utility of the dibromopyrazine rebridging agent to produce on-demand future antibody conjugates for diagnostic or therapeutic applications.
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Affiliation(s)
- Dénes Szepesi Kovács
- Medicinal Chemistry Research Group, Research Centre for Natural Sciences, Magyar tudósok krt. 2, H-1117 Budapest, Hungary
- Department of Organic Chemistry and Technology, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem rkp. 3, H-1111 Budapest, Hungary
- National Drug Research and Development Laboratory, Magyar tudósok krt. 2, H-1117 Budapest, Hungary
| | - Bettina Pásztor
- Medicinal Chemistry Research Group, Research Centre for Natural Sciences, Magyar tudósok krt. 2, H-1117 Budapest, Hungary
- Department of Organic Chemistry and Technology, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem rkp. 3, H-1111 Budapest, Hungary
- National Drug Research and Development Laboratory, Magyar tudósok krt. 2, H-1117 Budapest, Hungary
| | - Péter Ábrányi-Balogh
- Medicinal Chemistry Research Group, Research Centre for Natural Sciences, Magyar tudósok krt. 2, H-1117 Budapest, Hungary
- Department of Organic Chemistry and Technology, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem rkp. 3, H-1111 Budapest, Hungary
- National Drug Research and Development Laboratory, Magyar tudósok krt. 2, H-1117 Budapest, Hungary
| | - László Petri
- Medicinal Chemistry Research Group, Research Centre for Natural Sciences, Magyar tudósok krt. 2, H-1117 Budapest, Hungary
- National Drug Research and Development Laboratory, Magyar tudósok krt. 2, H-1117 Budapest, Hungary
- Institute of Chemistry, Faculty of Science, Eötvös Loránd University, Egyetem t. 1-3, H-1053 Budapest, Hungary
| | - Tímea Imre
- Medicinal Chemistry Research Group, Research Centre for Natural Sciences, Magyar tudósok krt. 2, H-1117 Budapest, Hungary
- MS Metabolomics Research Laboratory, Research Centre for Natural Sciences, Magyar tudósok krt. 2, H-1117 Budapest, Hungary
| | - József Simon
- Medicinal Chemistry Research Group, Research Centre for Natural Sciences, Magyar tudósok krt. 2, H-1117 Budapest, Hungary
- MS Metabolomics Research Laboratory, Research Centre for Natural Sciences, Magyar tudósok krt. 2, H-1117 Budapest, Hungary
| | - Enikő Tátrai
- Department of Experimental Pharmacology, National Institute of Oncology, Ráth György u. 7-9, H-1122 Budapest, Hungary
- National Tumor Biology Laboratory, Ráth György u. 7-9, H-1122 Budapest, Hungary
| | - György Várady
- Molecular Cell Biology Research Group, Research Centre for Natural Sciences, H-1117 Budapest, Hungary
| | - József Tóvári
- Department of Experimental Pharmacology, National Institute of Oncology, Ráth György u. 7-9, H-1122 Budapest, Hungary
- National Tumor Biology Laboratory, Ráth György u. 7-9, H-1122 Budapest, Hungary
| | - Peter A Szijj
- Department of Chemistry, University College London, WC1H 0AJ London, U.K
| | - György M Keserű
- Medicinal Chemistry Research Group, Research Centre for Natural Sciences, Magyar tudósok krt. 2, H-1117 Budapest, Hungary
- Department of Organic Chemistry and Technology, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem rkp. 3, H-1111 Budapest, Hungary
- National Drug Research and Development Laboratory, Magyar tudósok krt. 2, H-1117 Budapest, Hungary
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3
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Lang W, Shu D, Liu S, Sun C, Liu H, Huang Q, Mao G, Yang S, Xing B. Enzyme-Responsive Fluorescent Labeling Strategy for In Vivo Imaging of Gut Bacteria. J Org Chem 2024. [PMID: 38607989 DOI: 10.1021/acs.joc.3c02848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/14/2024]
Abstract
Myrosinase (Myr), as a unique β-thioglucosidase enzyme capable of converting natural and gut bacterial metabolite glucosinolates into bioactive agents, has recently attracted a great deal of attention because of its essential functions in exerting homeostasis dynamics and promoting human health. Such nutraceutical and biomedical significance demands unique and reliable strategies for specific identification of Myr enzymes of gut bacterial origin in living systems, whereas the dearth of methods for bacterial Myr detection and visualization remains a challenging concern. Herein, we present a series of unique molecular probes for specific identification and imaging of Myr-expressing gut bacterial strains. Typically, an artificial glucosinolate with an azide group in aglycone was synthesized and sequentially linked with the probe moieties of versatile channels through simple click conjugation. Upon gut bacterial enzymatic cleavage, the as-prepared probe molecules could be converted into reactive isothiocyanate forms, which can further act as reactive electrophiles for the covalent labeling of gut bacteria, thus realizing their localized fluorescent imaging within a wide range of wavelength channels in live bacterial strains and animal models. Overall, our proposed method presents a novel technology for selective gut bacterial Myr enzyme labeling in vitro and in vivo. We envision that such a rational probe design would serve as a promising solution for chemoprevention assessment, microflora metabolic mechanistic study, and gut bacterium-mediated physiopathological exploration.
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Affiliation(s)
- Wenchao Lang
- School of Chemistry, Chemical Engineering & Biotechnology, Nanyang Technological University, Singapore 637371
| | - Dunji Shu
- College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China
| | - Songhan Liu
- School of Chemistry, Chemical Engineering & Biotechnology, Nanyang Technological University, Singapore 637371
| | - Caixia Sun
- School of Chemistry, Chemical Engineering & Biotechnology, Nanyang Technological University, Singapore 637371
| | - Huihong Liu
- College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China
| | - Qianqian Huang
- School of Chemistry, Chemical Engineering & Biotechnology, Nanyang Technological University, Singapore 637371
| | - Guojiang Mao
- Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China
| | - Sheng Yang
- College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China
| | - Bengang Xing
- School of Chemistry, Chemical Engineering & Biotechnology, Nanyang Technological University, Singapore 637371
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4
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Chauhan P, V R, Kumar M, Molla R, Mishra SD, Basa S, Rai V. Chemical technology principles for selective bioconjugation of proteins and antibodies. Chem Soc Rev 2024; 53:380-449. [PMID: 38095227 DOI: 10.1039/d3cs00715d] [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: 01/03/2024]
Abstract
Proteins are multifunctional large organic compounds that constitute an essential component of a living system. Hence, control over their bioconjugation impacts science at the chemistry-biology-medicine interface. A chemical toolbox for their precision engineering can boost healthcare and open a gateway for directed or precision therapeutics. Such a chemical toolbox remained elusive for a long time due to the complexity presented by the large pool of functional groups. The precise single-site modification of a protein requires a method to address a combination of selectivity attributes. This review focuses on guiding principles that can segregate them to simplify the task for a chemical method. Such a disintegration systematically employs a multi-step chemical transformation to deconvolute the selectivity challenges. It constitutes a disintegrate (DIN) theory that offers additional control parameters for tuning precision in protein bioconjugation. This review outlines the selectivity hurdles faced by chemical methods. It elaborates on the developments in the perspective of DIN theory to demonstrate simultaneous regulation of reactivity, chemoselectivity, site-selectivity, modularity, residue specificity, and protein specificity. It discusses the progress of such methods to construct protein and antibody conjugates for biologics, including antibody-fluorophore and antibody-drug conjugates (AFCs and ADCs). It also briefs how this knowledge can assist in developing small molecule-based covalent inhibitors. In the process, it highlights an opportunity for hypothesis-driven routes to accelerate discoveries of selective methods and establish new targetome in the precision engineering of proteins and antibodies.
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Affiliation(s)
- Preeti Chauhan
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, 462 066, India.
| | - Ragendu V
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, 462 066, India.
| | - Mohan Kumar
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, 462 066, India.
| | - Rajib Molla
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, 462 066, India.
| | - Surya Dev Mishra
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, 462 066, India.
| | - Sneha Basa
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, 462 066, India.
| | - Vishal Rai
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, 462 066, India.
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5
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Szepesi Kovács D, Kontra B, Chiovini B, Müller D, Tóth EZ, Ábrányi-Balogh P, Wittner L, Várady G, Turczel G, Farkas Ö, Owen MC, Katona G, Győrffy B, Keserű GM, Mucsi Z, Rózsa BJ, Kovács E. Effective synthesis, development and application of a highly fluorescent cyanine dye for antibody conjugation and microscopy imaging. Org Biomol Chem 2023; 21:8829-8836. [PMID: 37917021 DOI: 10.1039/d3ob01471a] [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: 11/03/2023]
Abstract
An asymmetric cyanine-type fluorescent dye was designed and synthesized via a versatile, multi-step process, aiming to conjugate with an Her2+ receptor specific antibody by an azide-alkyne click reaction. The aromaticity and the excitation and relaxation energetics of the fluorophore were characterized by computational methods. The synthesized dye exhibited excellent fluorescence properties for confocal microscopy, offering efficient applicability in in vitro imaging due to its merits such as a high molar absorption coefficient (36 816 M-1 cm-1), excellent brightness, optimal wavelength (627 nm), larger Stokes shift (26 nm) and appropriate photostability compared to cyanines. The conjugated cyanine-trastuzumab was constructed via an effective, metal-free, strain-promoted azide-alkyne click reaction leading to a regulated number of dyes being conjugated. This novel cyanine-labelled antibody was successfully applied for in vitro confocal imaging and flow cytometry of Her2+ tumor cells.
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Affiliation(s)
- Dénes Szepesi Kovács
- Medicinal Chemistry Research Group, HUN-REN Research Centre for Natural Sciences, H-1117 Budapest, Hungary
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, H-1111 Budapest, Hungary
- National Laboratory for Drug Research and Development, H-1117 Budapest, Hungary
| | - Bence Kontra
- Brain Vision Center, H-1094 Budapest, Hungary
- Femtonics Ltd., H-1094 Budapest, Hungary
- Semmelweis University Doctoral School, H-1085 Budapest, Hungary
| | - Balázs Chiovini
- Faculty of Information Technology and Bionics, Pázmány Péter Catholic University, H-1444 Budapest, Hungary
| | - Dalma Müller
- Semmelweis University Doctoral School, H-1085 Budapest, Hungary
- Oncology Biomarker Research Group, HUN-REN Research Centre for Natural Sciences, H-1117 Budapest, Hungary
- Department of Bioinformatics, Semmelweis University, H-1094, Budapest, Hungary
| | - Estilla Zsófia Tóth
- National Laboratory for Drug Research and Development, H-1117 Budapest, Hungary
- Semmelweis University Doctoral School, H-1085 Budapest, Hungary
- Integrative Neuroscience Research Group, HUN-REN Research Centre for Natural Sciences, H-1117 Budapest, Hungary
| | - Péter Ábrányi-Balogh
- Medicinal Chemistry Research Group, HUN-REN Research Centre for Natural Sciences, H-1117 Budapest, Hungary
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, H-1111 Budapest, Hungary
- National Laboratory for Drug Research and Development, H-1117 Budapest, Hungary
| | - Lucia Wittner
- National Laboratory for Drug Research and Development, H-1117 Budapest, Hungary
- Integrative Neuroscience Research Group, HUN-REN Research Centre for Natural Sciences, H-1117 Budapest, Hungary
| | - György Várady
- Molecular Cell Biology Research Group, HUN-REN Research Centre for Natural Sciences, H-1117 Budapest, Hungary
| | - Gábor Turczel
- NMR Research Laboratory, HUN-REN Research Centre for Natural Sciences, H-1117 Budapest, Hungary
| | - Ödön Farkas
- Department of Organic Chemistry, Eötvös Loránd University, H-1117 Budapest, Hungary
| | - Michael C Owen
- Institute of Chemistry, University of Miskolc, Miskolc H-3515, Hungary
- Higher Education and Industrial Cooperation Centre, University of Miskolc, Miskolc H-3515, Hungary
| | - Gergely Katona
- Faculty of Information Technology and Bionics, Pázmány Péter Catholic University, H-1444 Budapest, Hungary
| | - Balázs Győrffy
- National Laboratory for Drug Research and Development, H-1117 Budapest, Hungary
- Oncology Biomarker Research Group, HUN-REN Research Centre for Natural Sciences, H-1117 Budapest, Hungary
- Department of Bioinformatics, Semmelweis University, H-1094, Budapest, Hungary
| | - György Miklós Keserű
- Medicinal Chemistry Research Group, HUN-REN Research Centre for Natural Sciences, H-1117 Budapest, Hungary
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, H-1111 Budapest, Hungary
- National Laboratory for Drug Research and Development, H-1117 Budapest, Hungary
| | - Zoltán Mucsi
- Brain Vision Center, H-1094 Budapest, Hungary
- Femtonics Ltd., H-1094 Budapest, Hungary
- Institute of Chemistry, University of Miskolc, Miskolc H-3515, Hungary
| | - Balázs J Rózsa
- Brain Vision Center, H-1094 Budapest, Hungary
- Faculty of Information Technology and Bionics, Pázmány Péter Catholic University, H-1444 Budapest, Hungary
- Laboratory of 3D Functional Network and Dendritic Imaging, HUN-REN Institute of Experimental Medicine, H-1083 Budapest, Hungary
| | - Ervin Kovács
- Femtonics Ltd., H-1094 Budapest, Hungary
- Polymer Chemistry and Physics Research Group, HUN-REN Research Centre for Natural Sciences, H-1117 Budapest, Hungary.
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6
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Choi WO, Jung YJ, Kim M, Kim H, Li J, Ko H, Lee HI, Lee HJ, Lee JK. Substituent Effects of Fluorescein on Photoredox Initiating Performance under Visible Light. ACS OMEGA 2023; 8:40277-40286. [PMID: 37929095 PMCID: PMC10620908 DOI: 10.1021/acsomega.3c04324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/17/2023] [Accepted: 10/06/2023] [Indexed: 11/07/2023]
Abstract
We demonstrated the effects of substituents in fluorescein on the photoredox catalytic performance under visible light. For the systematic investigation, the phenyl ring of fluorescein was substituted with six different functional groups (i.e., amine, amide, isothiocyanate, aminomethyl, bromo, or nitro group) at the 5- or 6-position. The fluorescein derivatives were carefully characterized through photophysical and electrochemical analyses. The substituent effects were estimated by comparing the photopolymerization of poly(ethylene glycol) diacrylate (PEGDA) and N-vinylpyrrolidone (VP) in the presence of triethanolamine (TEOA) under aerobic conditions to that of intact fluorescein. As a result, the amine and nitro groups exhibited the lowest performances, presumably due to intramolecular photoinduced electron transfer (PET) promoted by the strong electron push-pull effect. The others, representative moderate or weak deactivators and activators, exhibited inferior performances than intact fluorescein, presumably owing to the more negative ΔGPET values, resulting in a decreased rate of intermolecular PET. These results are crucial for understanding the structure-performance relationship and the development of visible-light photoredox catalysts with improved performance and functionality.
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Affiliation(s)
| | | | | | - Hoyun Kim
- Department of Chemistry and
Green-Nano Materials Research Center, Kyungpook
National University, Daegu 41566, South Korea
| | - Jingjing Li
- Department of Chemistry and
Green-Nano Materials Research Center, Kyungpook
National University, Daegu 41566, South Korea
| | - Hyebin Ko
- Department of Chemistry and
Green-Nano Materials Research Center, Kyungpook
National University, Daegu 41566, South Korea
| | - Hong-In Lee
- Department of Chemistry and
Green-Nano Materials Research Center, Kyungpook
National University, Daegu 41566, South Korea
| | - Hye Jin Lee
- Department of Chemistry and
Green-Nano Materials Research Center, Kyungpook
National University, Daegu 41566, South Korea
| | - Jungkyu K. Lee
- Department of Chemistry and
Green-Nano Materials Research Center, Kyungpook
National University, Daegu 41566, South Korea
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7
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Vaidya AJ, Rammohan M, Lee YH, Lee KZ, Chou CY, Hartley Z, Scott CA, Susler RG, Wang L, Loesch-Fries LS, Harris MT, Solomon KV. Engineering Alkaline-Stable Barley Stripe Mosaic Virus-Like Particles for Efficient Surface Modification. Biochem Eng J 2023; 199:109062. [PMID: 37692450 PMCID: PMC10486258 DOI: 10.1016/j.bej.2023.109062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
Abstract
Viruses and virus-like particles are powerful templates for materials synthesis because of their capacity for precise protein engineering and diverse surface functionalization. We recently developed a recombinant bacterial expression system for the production of barley stripe mosaic virus-like particles (BSMV VLPs). However, the applicability of this biotemplate was limited by low stability in alkaline conditions and a lack of chemical handles for ligand attachment. Here, we identify and validate novel residues in the BSMV Caspar carboxylate clusters that mediate virion disassembly through repulsive interactions at high pH. Point mutations of these residues to create attractive interactions that increase rod length ~2 fold, with an average rod length of 91 nm under alkaline conditions. To enable diverse chemical surface functionalization, we also introduce reactive lysine residues at the C-terminus of BSMV coat protein, which is presented on the VLP surface. Chemical conjugation reactions with this lysine proceed more quickly under alkaline conditions. Thus, our alkaline-stable VLP mutants are more suitable for rapid surface functionalization of long nanorods. This work validates novel residues involved in BSMV VLP assembly and demonstrates the feasibility of chemical functionalization of BSMV VLPs for the first time, enabling novel biomedical and chemical applications.
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Affiliation(s)
- Akash J. Vaidya
- 150 Academy St, Department of Chemical & Biomolecular Engineering, University of Delaware, Newark, DE, 19716, USA
| | - Mruthula Rammohan
- 150 Academy St, Department of Chemical & Biomolecular Engineering, University of Delaware, Newark, DE, 19716, USA
| | - Yu-Hsuan Lee
- 480 Stadium Mall Drive, School of Chemical Engineering, Purdue University, West Lafayette, IN 47907, United States
| | - Kok Zhi Lee
- 225 South University Street, Agricultural & Biological Engineering, Purdue University, West Lafayette, IN 47907-2093, United States
- 1203 West State Street, Bindley Bioscience Center, Purdue University, West Lafayette, IN 47906, United States
| | - Che-yu Chou
- 480 Stadium Mall Drive, School of Chemical Engineering, Purdue University, West Lafayette, IN 47907, United States
| | - Zachary Hartley
- 915 West State Street, Plant Genetics, Breeding and Biotechnology Program, Department of Agronomy, Purdue University, West Lafayette, IN 47907, United States
| | - Corren A. Scott
- 480 Stadium Mall Drive, School of Chemical Engineering, Purdue University, West Lafayette, IN 47907, United States
| | - Rachel G. Susler
- 480 Stadium Mall Drive, School of Chemical Engineering, Purdue University, West Lafayette, IN 47907, United States
| | - Longfei Wang
- 915 West State Street, Department of Botany and Plant Pathology, Purdue University, West Lafayette, IN 47907, United States
| | - L. Sue Loesch-Fries
- 915 West State Street, Department of Botany and Plant Pathology, Purdue University, West Lafayette, IN 47907, United States
| | - Michael T. Harris
- 480 Stadium Mall Drive, School of Chemical Engineering, Purdue University, West Lafayette, IN 47907, United States
| | - Kevin V. Solomon
- 150 Academy St, Department of Chemical & Biomolecular Engineering, University of Delaware, Newark, DE, 19716, USA
- 225 South University Street, Agricultural & Biological Engineering, Purdue University, West Lafayette, IN 47907-2093, United States
- 1203 West State Street, Bindley Bioscience Center, Purdue University, West Lafayette, IN 47906, United States
- 500 Central Drive, Laboratory of Renewable Resources Engineering (LORRE), Purdue University, West Lafayette, IN, 47907-2022, United States
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8
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Szepesi Kovács D, Chiovini B, Müller D, Tóth EZ, Fülöp A, Ábrányi-Balogh P, Wittner L, Várady G, Farkas Ö, Turczel G, Katona G, Győrffy B, Keserű GM, Mucsi Z, Rózsa BJ, Kovács E. Synthesis and Application of Two-Photon Active Fluorescent Rhodol Dyes for Antibody Conjugation and In Vitro Cell Imaging. ACS OMEGA 2023; 8:22836-22843. [PMID: 37396252 PMCID: PMC10308389 DOI: 10.1021/acsomega.3c01796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Accepted: 06/01/2023] [Indexed: 07/04/2023]
Abstract
A novel family of julolidine-containing fluorescent rhodols equipped with a wide variety of substituents was synthesized in a versatile two-step process. The prepared compounds were fully characterized and exhibited excellent fluorescence properties for microscopy imaging. The best candidate was conjugated to the therapeutic antibody trastuzumab through a copper-free strain-promoted azide-alkyne click reaction. The rhodol-labeled antibody was successfully applied for in vitro confocal and two-photon microscopy imaging of Her2+ cells.
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Affiliation(s)
- Dénes Szepesi Kovács
- Medicinal
Chemistry Research Group, Research Centre
for Natural Sciences, H-1117 Budapest, Hungary
- Department
of Organic Chemistry and Technology, Budapest
University of Technology and Economics, H-1111 Budapest, Hungary
- National
Laboratory for Drug Research and Development, H-1117 Budapest, Hungary
| | - Balázs Chiovini
- Faculty
of Information Technology and Bionics, Pázmány
Péter Catholic University, H-1444 Budapest, Hungary
| | - Dalma Müller
- Oncology
Biomarker Research Group, Research Centre
for Natural Sciences, H-1117 Budapest, Hungary
- Department
of Bioinformatics, Semmelweis University, H-1094 Budapest, Hungary
- Semmelweis
University Doctoral School, H-1085 Budapest Hungary
| | - Estilla Zsófia Tóth
- National
Laboratory for Drug Research and Development, H-1117 Budapest, Hungary
- Semmelweis
University Doctoral School, H-1085 Budapest Hungary
- Integrative
Neuroscience Research Group, Research Centre
for Natural Sciences, H-1117 Budapest, Hungary
| | - Anna Fülöp
- Femtonics
Ltd., H-1094 Budapest, Hungary
| | - Péter Ábrányi-Balogh
- Medicinal
Chemistry Research Group, Research Centre
for Natural Sciences, H-1117 Budapest, Hungary
- Department
of Organic Chemistry and Technology, Budapest
University of Technology and Economics, H-1111 Budapest, Hungary
- National
Laboratory for Drug Research and Development, H-1117 Budapest, Hungary
| | - Lucia Wittner
- National
Laboratory for Drug Research and Development, H-1117 Budapest, Hungary
- Integrative
Neuroscience Research Group, Research Centre
for Natural Sciences, H-1117 Budapest, Hungary
| | - György Várady
- Molecular
Cell Biology Research Group, Research Centre
for Natural Sciences, H-1117 Budapest, Hungary
| | - Ödön Farkas
- Department
of Organic Chemistry, Eötvös
Loránd University, H-1117 Budapest, Hungary
| | - Gábor Turczel
- NMR
Research Laboratory, Research Centre for
Natural Sciences, H-1117 Budapest, Hungary
| | - Gergely Katona
- Faculty
of Information Technology and Bionics, Pázmány
Péter Catholic University, H-1444 Budapest, Hungary
| | - Balázs Győrffy
- National
Laboratory for Drug Research and Development, H-1117 Budapest, Hungary
- Oncology
Biomarker Research Group, Research Centre
for Natural Sciences, H-1117 Budapest, Hungary
- Department
of Bioinformatics, Semmelweis University, H-1094 Budapest, Hungary
- Department
of Pediatrics, Semmelweis University, H-1094 Budapest, Hungary
| | - György Miklós Keserű
- Medicinal
Chemistry Research Group, Research Centre
for Natural Sciences, H-1117 Budapest, Hungary
- Department
of Organic Chemistry and Technology, Budapest
University of Technology and Economics, H-1111 Budapest, Hungary
- National
Laboratory for Drug Research and Development, H-1117 Budapest, Hungary
| | - Zoltán Mucsi
- Brain Vision Center, H-1094 Budapest, Hungary
- Faculty
of Materials and Chemical Sciences, University
of Miskolc, Miskolc H-3515, Hungary
| | - Balázs J. Rózsa
- Faculty
of Information Technology and Bionics, Pázmány
Péter Catholic University, H-1444 Budapest, Hungary
- Brain Vision Center, H-1094 Budapest, Hungary
- Laboratory of 3D Functional Network and Dendritic Imaging, Institute of Experimental Medicine, H-1083 Budapest, Hungary
| | - Ervin Kovács
- Femtonics
Ltd., H-1094 Budapest, Hungary
- Polymer
Chemistry and Physics Research Group, Research
Centre for Natural Sciences, H-1117 Budapest, Hungary
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9
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Trabelcy B, Shteindel N, Lalzar M, Izhaki I, Gerchman Y. Bacterial detoxification of plant defence secondary metabolites mediates the interaction between a shrub and frugivorous birds. Nat Commun 2023; 14:1821. [PMID: 37002264 PMCID: PMC10066296 DOI: 10.1038/s41467-023-37525-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 03/14/2023] [Indexed: 04/03/2023] Open
Abstract
Many plants produce fleshy fruits, attracting fruit-eating animals that disperse the seeds in their droppings. Such seed dispersal results in a conflict between the plant and the animal, as digestion of seeds can be highly beneficial to the animal but reduces plant fitness. The plant Ochradenus baccatus uses the myrosinase-glucosinolates system to protect its seeds. We show that hydrolysis of the O. baccatus fruit glucosinolates by the myrosinase enzyme inhibited digestive enzymes and hampered digestion in naïve individuals of the bird Pycnonotus xanthopygos. However, digestion in birds regularly feeding on O. baccatus fruits was unaffected. We find that Pantoea bacteria, dominating the gut of these experienced birds as well as the fruits, thrive on glucosinolates hydrolysis products in culture. Augmentation of Pantoea protects both naïve birds and plant seedlings from the effects of glucosinolates hydrolysis products. Our findings demonstrate a tripartite interaction, where the plant-bird mutually beneficial interactions are mediated by a communal bacterial tenant.
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Affiliation(s)
- Beny Trabelcy
- Department of Evolutionary and Environmental Biology, Faculty of Natural Sciences, University of Haifa, Haifa, 3498838, Israel.
| | - Nimrod Shteindel
- Department of Evolutionary and Environmental Biology, Faculty of Natural Sciences, University of Haifa, Haifa, 3498838, Israel
| | - Maya Lalzar
- Bioinformatic Unit, University of Haifa, Haifa, Israel
| | - Ido Izhaki
- Department of Evolutionary and Environmental Biology, Faculty of Natural Sciences, University of Haifa, Haifa, 3498838, Israel
| | - Yoram Gerchman
- Department of Evolutionary and Environmental Biology, Faculty of Natural Sciences, University of Haifa, Haifa, 3498838, Israel.
- Oranim College, Kiryat Tivon, 3600600, Israel.
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10
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Ioannou E, Labrou NE. Rational Design of Self-Assembling Supramolecular Protein Nanostructures Utilizing the Cucurbit[8]Uril Macrocyclic Host. Methods Mol Biol 2022; 2487:177-187. [PMID: 35687236 DOI: 10.1007/978-1-0716-2269-8_11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Self-assembly is a phenomenon that governs molecular structural organization in nature, therefore raising research interest for the fabrication of novel nanomaterials with diverse applications in biocatalysis, biomedicine, material templating, and biosensor development. In this chapter we provide protocols for the development of supramolecular protein complexes based on host-guest interactions in the presence of the macrocyclic host, cucurbit[8]uril (CB[8]). CB[8] is reported to exhibit high binding affinity towards the tripeptide Phe-Gly-Gly (FGG), therefore it can be utilized as a selective adhesive of protein molecules, after fusion of FGG to an accessible protein surface.
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Affiliation(s)
- Elisavet Ioannou
- Laboratory of Enzyme Technology, Department of Biotechnology, School of Applied Biology and Biotechnology, Agricultural University of Athens, Athens, Greece
| | - Nikolaos E Labrou
- Laboratory of Enzyme Technology, Department of Biotechnology, School of Applied Biology and Biotechnology, Agricultural University of Athens, Athens, Greece.
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11
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Apley KD, Laflin AD, Johnson SN, Batrash N, Griffin JD, Berkland CJ, DeKosky BJ. Optimized Production of Fc Fusion Proteins by Sortase Enzymatic Ligation. Ind Eng Chem Res 2021; 60:16839-16853. [PMID: 38646185 PMCID: PMC11031256 DOI: 10.1021/acs.iecr.1c02842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Fc fusions are a growing class of drugs comprising an antibody Fc domain covalently linked to a protein or peptide and can pose manufacturing challenges. In this study we evaluated three synthetic approaches to generate Fc fusions, using Fc-insulin as a model drug candidate. Engineered human IgG1 was digested with HRV3C to produce an Fc fragment with a C-terminal sortase tag (Fc-LPETGGH6). The synthesis of Fc-insulin2 from Fc-LPETGGH6 was evaluated with direct sortase-mediated ligation (SML) and two chemoenzymatic strategies. Direct SML was performed with triglycine-insulin, and chemoenzymatic strategies used to SML fuse either triglycine-azide or triglycine-DBCO prior to linking insulin with copper-catalyzed or strain-promoted azidealkyne cycloaddition. Reaction conditions were optimized by evaluating reagent concentrations, relative equivalents, temperature, and time. Direct SML provided the most effective reaction yields, converting 60-70% of Fc-LPETGGH6 to Fc-insulin2, whereas our optimized chemoenzymatic synthesis converted 30-40% of Fc-LPETGGH6 to Fc-insulin2. Here we show that SML is a practical and efficient method to synthesize Fc fusions and provide an optimized pathway for fusion drug synthesis.
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Affiliation(s)
- Kyle D Apley
- Department of Pharmaceutical Chemistry, University of Kansas, Lawrence, Kansas 66045, United States
| | - Amy D Laflin
- Department of Pharmaceutical Chemistry, University of Kansas, Lawrence, Kansas 66045, United States
| | - Stephanie N Johnson
- Department of Pharmaceutical Chemistry, University of Kansas, Lawrence, Kansas 66045, United States
| | - Noora Batrash
- Department of Chemical and Petroleum Engineering, University of Kansas, Lawrence, Kansas 66045, United States
| | - J Daniel Griffin
- Department of Pharmaceutical Chemistry, University of Kansas, Lawrence, Kansas 66045, United States
| | - Cory J Berkland
- Department of Pharmaceutical Chemistry, Department of Chemical and Petroleum Engineering, and Bioengineering Graduate Program, University of Kansas, Lawrence, Kansas 66045, United States
| | - Brandon J DeKosky
- Department of Pharmaceutical Chemistry, Department of Chemical and Petroleum Engineering, and Bioengineering Graduate Program, University of Kansas, Lawrence, Kansas 66045, United States; Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02142, United States; The Ragon Institute of MGH, MIT, and Harvard, Cambridge, Massachusetts 02139, United States
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12
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Kang MS, Kong TWS, Khoo JYX, Loh TP. Recent developments in chemical conjugation strategies targeting native amino acids in proteins and their applications in antibody-drug conjugates. Chem Sci 2021; 12:13613-13647. [PMID: 34760149 PMCID: PMC8549674 DOI: 10.1039/d1sc02973h] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 09/27/2021] [Indexed: 12/15/2022] Open
Abstract
Many fields in chemical biology and synthetic biology require effective bioconjugation methods to achieve their desired functions and activities. Among such biomolecule conjugates, antibody-drug conjugates (ADCs) need a linker that provides a stable linkage between cytotoxic drugs and antibodies, whilst conjugating in a biologically benign, fast and selective fashion. This review focuses on how the development of novel organic synthesis can solve the problems of traditional linker technology. The review shall introduce and analyse the current developments in the modification of native amino acids on peptides or proteins and their applicability to ADC linker. Thereafter, the review shall discuss in detail each endogenous amino acid's intrinsic reactivity and selectivity aspects, and address the research effort to construct an ADC using each conjugation method.
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Affiliation(s)
- Min Sun Kang
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University 21 Nanyang Link 637371 Singapore
| | - Theresa Wai See Kong
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University 21 Nanyang Link 637371 Singapore
| | - Joycelyn Yi Xin Khoo
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University 21 Nanyang Link 637371 Singapore
| | - Teck-Peng Loh
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University 21 Nanyang Link 637371 Singapore
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13
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Abstract
Isothiocyanates (ITCs) are biologically active molecules found in several natural products and pharmaceutical ingredients. Moreover, due to their high and versatile reactivity, they are widely used as intermediates in organic synthesis. This review considers the best practices for the synthesis of ITCs using elemental sulfur, highlighting recent developments. First, we summarize the in situ generation of thiocarbonyl surrogates followed by their transformation in the presence of primary amines leading to ITCs. Second, carbenes and amines afford isocyanides, and the further reaction of this species with sulfur readily generates ITCs under thermal, catalytic or basic conditions. Additionally, we also reveal that in the catalyst-free reaction of isocyanides and sulfur, two—until this time overlooked and not investigated—different mechanistic pathways exist.
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14
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Lima RC, de Carvalho APA, Vieira CP, Moreira RV, Conte-Junior CA. Green and Healthier Alternatives to Chemical Additives as Cheese Preservative: Natural Antimicrobials in Active Nanopackaging/Coatings. Polymers (Basel) 2021; 13:2675. [PMID: 34451212 PMCID: PMC8398146 DOI: 10.3390/polym13162675] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 08/02/2021] [Accepted: 08/05/2021] [Indexed: 02/05/2023] Open
Abstract
The side effects and potential impacts on human health by traditional chemical additives as food preservatives (i.e., potassium and sodium salts) are the reasons why novel policies are encouraged by worldwide public health institutes. More natural alternatives with high antimicrobial efficacy to extend shelf life without impairing the cheese physicochemical and sensory quality are encouraged. This study is a comprehensive review of emerging preservative cheese methods, including natural antimicrobials (e.g., vegetable, animal, and protist kingdom origins) as a preservative to reduce microbial cheese contamination and to extend shelf life by several efforts such as manufacturing ingredients, the active ingredient for coating/packaging, and the combination of packaging materials or processing technologies. Essential oils (EO) or plant extracts rich in phenolic and terpenes, combined with packaging conditions and non-thermal methods, generally showed a robust microbial inhibition and prolonged shelf life. However, it impaired the cheese sensory quality. Alternatives including EO, polysaccharides, polypeptides, and enzymes as active ingredients/nano-antimicrobials for an edible film of coating/nano-bio packaging showed a potent and broad-spectrum antimicrobial action during shelf life, preserving cheese quality parameters such as pH, texture, color, and flavor. Future opportunities were identified in order to investigate the toxicological effects of the discussed natural antimicrobials' potential as cheese preservatives.
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Affiliation(s)
- Rayssa Cruz Lima
- Department of Biochemistry, Chemistry Institute, Federal University of Rio de Janeiro, Rio de Janeiro 21941598, RJ, Brazil; (R.C.L.); (C.P.V.)
- Center for Food Analysis (NAL), Technological Development Support Laboratory (LADETEC), Federal University of Rio de Janeiro, Rio de Janeiro 21941598, RJ, Brazil
| | - Anna Paula Azevedo de Carvalho
- Department of Biochemistry, Chemistry Institute, Federal University of Rio de Janeiro, Rio de Janeiro 21941598, RJ, Brazil; (R.C.L.); (C.P.V.)
- Center for Food Analysis (NAL), Technological Development Support Laboratory (LADETEC), Federal University of Rio de Janeiro, Rio de Janeiro 21941598, RJ, Brazil
- Graduate Program in Chemistry (PGQu), Chemistry Institute, Federal University of Rio de Janeiro, Rio de Janeiro 21941909, RJ, Brazil
- Graduate Program in Food Science (PPGCAL), Chemistry Institute, Federal University of Rio de Janeiro, Rio de Janeiro 21941909, RJ, Brazil
| | - Carla P. Vieira
- Department of Biochemistry, Chemistry Institute, Federal University of Rio de Janeiro, Rio de Janeiro 21941598, RJ, Brazil; (R.C.L.); (C.P.V.)
- Center for Food Analysis (NAL), Technological Development Support Laboratory (LADETEC), Federal University of Rio de Janeiro, Rio de Janeiro 21941598, RJ, Brazil
| | - Rodrigo Vilela Moreira
- Graduate Program in Veterinary Hygiene (PPGHV), Faculty of Veterinary Medicine, Fluminense Federal University (UFF), Niterói 24230340, RJ, Brazil;
| | - Carlos Adam Conte-Junior
- Department of Biochemistry, Chemistry Institute, Federal University of Rio de Janeiro, Rio de Janeiro 21941598, RJ, Brazil; (R.C.L.); (C.P.V.)
- Center for Food Analysis (NAL), Technological Development Support Laboratory (LADETEC), Federal University of Rio de Janeiro, Rio de Janeiro 21941598, RJ, Brazil
- Graduate Program in Chemistry (PGQu), Chemistry Institute, Federal University of Rio de Janeiro, Rio de Janeiro 21941909, RJ, Brazil
- Graduate Program in Food Science (PPGCAL), Chemistry Institute, Federal University of Rio de Janeiro, Rio de Janeiro 21941909, RJ, Brazil
- Graduate Program in Veterinary Hygiene (PPGHV), Faculty of Veterinary Medicine, Fluminense Federal University (UFF), Niterói 24230340, RJ, Brazil;
- Graduate Program in Sanitary Surveillance (PPGVS), National Institute of Health Quality Control, Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro 21040900, RJ, Brazil
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15
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Lu L, Duong VT, Shalash AO, Skwarczynski M, Toth I. Chemical Conjugation Strategies for the Development of Protein-Based Subunit Nanovaccines. Vaccines (Basel) 2021; 9:563. [PMID: 34071482 PMCID: PMC8228360 DOI: 10.3390/vaccines9060563] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 05/26/2021] [Accepted: 05/26/2021] [Indexed: 12/11/2022] Open
Abstract
The production of subunit nanovaccines relies heavily on the development of a vaccine delivery system that is safe and efficient at delivering antigens to the target site. Nanoparticles have been extensively investigated for vaccine delivery over the years, as they often possess self-adjuvanting properties. The conjugation of antigens to nanoparticles by covalent bonds ensures co-delivery of these components to the same subset of immune cells in order to trigger the desired immune responses. Herein, we review covalent conjugation strategies for grafting protein or peptide antigens onto other molecules or nanoparticles to obtain subunit nanovaccines. We also discuss the advantages of chemical conjugation in developing these vaccines.
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Affiliation(s)
| | | | | | - Mariusz Skwarczynski
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, QLD 4072, Australia; (L.L.); (V.T.D.); (A.O.S.)
| | - Istvan Toth
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, QLD 4072, Australia; (L.L.); (V.T.D.); (A.O.S.)
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16
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Szepesi Kovács D, Hajdu I, Mészáros G, Wittner L, Meszéna D, Tóth EZ, Hegedűs Z, Ranđelović I, Tóvári J, Szabó T, Szilágyi B, Milen M, Keserű GM, Ábrányi-Balogh P. Synthesis and characterization of new fluorescent boro-β-carboline dyes. RSC Adv 2021; 11:12802-12807. [PMID: 35423835 PMCID: PMC8697281 DOI: 10.1039/d1ra02132j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Accepted: 03/24/2021] [Indexed: 12/12/2022] Open
Abstract
The first representatives of the new fluorescent boro-β-carboline family were synthesized by the insertion of the difluoroboranyl group into the oxaza or diaza core. The resulting compounds showed good photophysical properties with fine Stokes-shifts in the range of 38-85 nm with blue and green emission. The energetics of the excitation states and molecular orbitals of two members were investigated by quantum chemical computations suggesting effects for the improved properties of diazaborinino-carbolines over oxazaborolo-carbolines. These properties nominated this chemotype as a new fluorophore for the development of fluorescent probes. As an example, diazaborinino-carbolines were used for the specific labeling of anti-Her2 antibody trastuzumab. The fluorescent conjugate showed a high fluorophore-antibody ratio and was confirmed as a useful tool for labeling and confocal microscopy imaging of tumour cells in vitro together with the ex vivo two-photon microscopy imaging of tumour slices.
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Affiliation(s)
- Dénes Szepesi Kovács
- Research Centre for Natural Sciences, Medicinal Chemistry Research Group POB 286 1519 Budapest Hungary +36-13826961
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics 1521 Budapest Hungary
| | - Imre Hajdu
- Research Centre for Natural Sciences, Medicinal Chemistry Research Group POB 286 1519 Budapest Hungary +36-13826961
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics 1521 Budapest Hungary
| | - Gergely Mészáros
- Research Centre for Natural Sciences, Comparative Psychophysiology Research Group POB 286 1519 Budapest Hungary
- Faculty of Information Technology and Bionics, Pázmány Péter Catholic University POB 278 1444 Budapest Hungary
| | - Lucia Wittner
- Research Centre for Natural Sciences, Comparative Psychophysiology Research Group POB 286 1519 Budapest Hungary
| | - Domokos Meszéna
- Research Centre for Natural Sciences, Comparative Psychophysiology Research Group POB 286 1519 Budapest Hungary
- Faculty of Information Technology and Bionics, Pázmány Péter Catholic University POB 278 1444 Budapest Hungary
| | - Estilla Zsófia Tóth
- Research Centre for Natural Sciences, Comparative Psychophysiology Research Group POB 286 1519 Budapest Hungary
- János Szentágothai Doctoral School of Neurosciences, Semmelweis University 1085 Budapest Hungary
| | - Zita Hegedűs
- National Institute of Oncology, Department of Experimental Pharmacology POB 21 1525 Budapest Hungary
| | - Ivan Ranđelović
- National Institute of Oncology, Department of Experimental Pharmacology POB 21 1525 Budapest Hungary
| | - József Tóvári
- National Institute of Oncology, Department of Experimental Pharmacology POB 21 1525 Budapest Hungary
| | - Tímea Szabó
- Egis Pharmaceuticals Plc., Directorate of Drug Substance Development POB 100 1475 Budapest Hungary
| | - Bence Szilágyi
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics 1521 Budapest Hungary
| | - Mátyás Milen
- Egis Pharmaceuticals Plc., Directorate of Drug Substance Development POB 100 1475 Budapest Hungary
| | - György Miklós Keserű
- Research Centre for Natural Sciences, Medicinal Chemistry Research Group POB 286 1519 Budapest Hungary +36-13826961
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics 1521 Budapest Hungary
| | - Péter Ábrányi-Balogh
- Research Centre for Natural Sciences, Medicinal Chemistry Research Group POB 286 1519 Budapest Hungary +36-13826961
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics 1521 Budapest Hungary
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17
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Oggianu M, Figus C, Ashoka-Sahadevan S, Monni N, Marongiu D, Saba M, Mura A, Bongiovanni G, Caltagirone C, Lippolis V, Cannas C, Cadoni E, Mercuri ML, Quochi F. Silicon-based fluorescent platforms for copper(ii) detection in water. RSC Adv 2021; 11:15557-15564. [PMID: 35481193 PMCID: PMC9029085 DOI: 10.1039/d1ra02695j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Accepted: 04/19/2021] [Indexed: 12/23/2022] Open
Abstract
The potential of silicon-based fluorescent platforms for the detection of trace toxic metal ions was investigated in an aqueous environment. To this aim, silicon chips were first functionalized with amino groups, and fluorescein organic dyes, used as sensing molecules, were then covalently linked to the surface via formation of thiourea groups. The obtained hybrid heterostructures exhibited high sensitivity and selectivity towards copper(ii), a limit of detection compatible with the recommended upper limits for copper in drinking water, and good reversibility using a standard metal–chelating agent. The fluorophore–analyte interaction mechanism at the basis of the reported fluorescence quenching, as well as the potential of performance improvement, were also studied. The herein presented sensing architecture allows, in principle, tailoring of the selectivity towards other metal ions by proper fluorophore selection, and provides a favorable outlook for integration of fluorescent chemosensors with silicon photonics technology. Covalent linkage of fluorescein to silanized silicon chips yields solid-state platforms for detection of copper(ii) in water. This architecture represents a step forward towards the fabrication of sensors for remote water analysis applications.![]()
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18
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Le Guern F, Mussard V, Gaucher A, Rottman M, Prim D. Fluorescein Derivatives as Fluorescent Probes for pH Monitoring along Recent Biological Applications. Int J Mol Sci 2020; 21:E9217. [PMID: 33287208 PMCID: PMC7729466 DOI: 10.3390/ijms21239217] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 11/24/2020] [Accepted: 12/01/2020] [Indexed: 12/19/2022] Open
Abstract
Potential of hydrogen (pH) is one of the most relevant parameters characterizing aqueous solutions. In biology, pH is intrinsically linked to cellular life since all metabolic pathways are implicated into ionic flows. In that way, determination of local pH offers a unique and major opportunity to increase our understanding of biological systems. Whereas the most common technique to obtain these data in analytical chemistry is to directly measure potential between two electrodes, in biological systems, this information has to be recovered in-situ without any physical interaction. Based on their non-invasive optical properties, fluorescent pH-sensitive probe are pertinent tools to develop. One of the most notorious pH-sensitive probes is fluorescein. In addition to excellent photophysical properties, this fluorophore presents a pH-sensitivity around neutral and physiologic domains. This review intends to shed new light on the recent use of fluorescein as pH-sensitive probes for biological applications, including targeted probes for specific imaging, flexible monitoring of bacterial growth, and biomedical applications.
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Affiliation(s)
- Florent Le Guern
- Institut Lavoisier de Versailles, CNRS, UVSQ, Université Paris-Saclay, 78035 Versailles, France; (V.M.); (A.G.); (D.P.)
| | - Vanessa Mussard
- Institut Lavoisier de Versailles, CNRS, UVSQ, Université Paris-Saclay, 78035 Versailles, France; (V.M.); (A.G.); (D.P.)
| | - Anne Gaucher
- Institut Lavoisier de Versailles, CNRS, UVSQ, Université Paris-Saclay, 78035 Versailles, France; (V.M.); (A.G.); (D.P.)
| | - Martin Rottman
- Faculté de Médecine Simone Veil, Université de Versailles St Quentin, INSERM UMR U1173, 2 Avenue de la Source de la Bièvre, 78180 Montigny le Bretonneux, France;
- Hôpital Raymond Poincaré, AP-HP, GHU Paris Saclay, 104 Bd Poincaré, 92380 Garches, France
| | - Damien Prim
- Institut Lavoisier de Versailles, CNRS, UVSQ, Université Paris-Saclay, 78035 Versailles, France; (V.M.); (A.G.); (D.P.)
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19
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Burianova V, Kalinin S, Supuran CT, Krasavin M. Radiotracers for positron emission tomography (PET) targeting tumour-associated carbonic anhydrase isoforms. Eur J Med Chem 2020; 213:113046. [PMID: 33303236 DOI: 10.1016/j.ejmech.2020.113046] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 11/20/2020] [Accepted: 11/22/2020] [Indexed: 12/11/2022]
Abstract
The tumour-associated, cell membrane-bound isoforms IX and XII of human carbonic anhydrase (CA, EC 4.2.1.1) are overexpressed in cancer cells contributing to the hypoxic tumour pH/metabolism regulating machinery and as thus, can serve as markers of malignant neoplastic tissue. Inhibitors of CAs can be employed both for the treatment of hypoxic tumours and in the design of radiotracers for positron emission tomography and imaging of such cancers. The present review provides a comprehensive summary of the progress achieved to-date in the field of developing PET-tracers based on monoclonal antibodies, biomolecules, and small-molecule ligands of CA IX and XII.
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Affiliation(s)
- Valeria Burianova
- Institute of Chemistry, St. Petersburg State University, St. Petersburg, Russia
| | - Stanislav Kalinin
- Institute of Chemistry, St. Petersburg State University, St. Petersburg, Russia
| | - Claudiu T Supuran
- Neurofarba Department, Section of Pharmaceutical Sciences, University of Florence, Florence, Italy.
| | - Mikhail Krasavin
- Institute of Chemistry, St. Petersburg State University, St. Petersburg, Russia.
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