1
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Quadrado RFN, Zhai Z, Zavadinack M, Klassen G, Iacomini M, Edgar KJ, Fajardo AR. All-polysaccharide, self-healing, pH-sensitive, in situ-forming hydrogel of carboxymethyl chitosan and aldehyde-functionalized hydroxyethyl cellulose. Carbohydr Polym 2024; 336:122105. [PMID: 38670749 DOI: 10.1016/j.carbpol.2024.122105] [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: 11/18/2023] [Revised: 03/25/2024] [Accepted: 03/26/2024] [Indexed: 04/28/2024]
Abstract
In situ forming hydrogels are promising for biomedical applications, especially in drug delivery. The precursor solution can be injected at the target site, where it undergoes a sol-gel transition to afford a hydrogel. In this sense, the most significant characteristic of these hydrogels is fast gelation behavior after injection. This study describes an all-polysaccharide, rapidly in situ-forming hydrogel composed of carboxymethyl chitosan (CMCHT) and hydroxyethyl cellulose functionalized with aldehyde groups (HEC-Ald). The HEC-Ald was synthesized through acetal functionalization, followed by acid deprotection. This innovative approach avoids cleavage of pyran rings, as is inherent in the periodate oxidation approach, which is the most common method currently employed for adding aldehyde groups to polysaccharides. The resulting hydrogel exhibited fast stress relaxation, self-healing properties, and pH sensitivity, which allowed it to control the release of an encapsulated model drug in response to the medium pH. Based on the collected data, the HEC-Ald/CMCHT hydrogels show promise as pH-sensitive drug carriers.
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Affiliation(s)
- Rafael F N Quadrado
- Laboratório de Tecnologia e Desenvolvimento de Compósitos e Materiais Poliméricos (LaCoPol), Federal University of Pelotas, 96010-900 Pelotas, RS, Brazil
| | - Zhenghao Zhai
- Macromolecules Innovation Institute, Virginia Tech, Blacksburg, VA 24061, USA
| | - Matheus Zavadinack
- Department of Biochemistry and Molecular Biology, Paraná Federal University, 81531-980 Curitiba, PR, Brazil
| | - Giseli Klassen
- Department of Basic Pathology, Paraná Federal University, 81531-980 Curitiba, PR, Brazil
| | - Marcello Iacomini
- Department of Biochemistry and Molecular Biology, Paraná Federal University, 81531-980 Curitiba, PR, Brazil
| | - Kevin J Edgar
- Macromolecules Innovation Institute, Virginia Tech, Blacksburg, VA 24061, USA; Department of Sustainable Biomaterials, Virginia Tech, Blacksburg, VA 24061, USA
| | - André R Fajardo
- Laboratório de Tecnologia e Desenvolvimento de Compósitos e Materiais Poliméricos (LaCoPol), Federal University of Pelotas, 96010-900 Pelotas, RS, Brazil.
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2
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Roh S, Nam Y, Nguyen MTN, Han JH, Lee JS. Dynamic Covalent Bond-Based Polymer Chains Operating Reversibly with Temperature Changes. Molecules 2024; 29:3261. [PMID: 39064840 PMCID: PMC11279090 DOI: 10.3390/molecules29143261] [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: 06/19/2024] [Revised: 07/04/2024] [Accepted: 07/08/2024] [Indexed: 07/28/2024] Open
Abstract
Dynamic bonds can facilitate reversible formation and dissociation of connections in response to external stimuli, endowing materials with shape memory and self-healing capabilities. Temperature is an external stimulus that can be easily controlled through heat. Dynamic covalent bonds in response to temperature can reversibly connect, exchange, and convert chains in the polymer. In this review, we introduce dynamic covalent bonds that operate without catalysts in various temperature ranges. The basic bonding mechanism and the kinetics are examined to understand dynamic covalent chemistry reversibly performed by equilibrium control. Furthermore, a recent synthesis method that implements dynamic covalent coupling based on various polymers is introduced. Dynamic covalent bonds that operate depending on temperature can be applied and expand the use of polymers, providing predictions for the development of future smart materials.
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Affiliation(s)
| | | | | | | | - Jun Seop Lee
- Department of Materials Science and Engineering, Gachon University, 1342 Seongnam-daero, Sujeong-gu, Seongnam-si 13120, Gyeonggi-do, Republic of Korea; (S.R.); (Y.N.); (M.T.N.N.); (J.-H.H.)
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3
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Esteve F, Rieu T, Lehn JM. Key structural features to favour imines over hydrates in water: pyridoxal phosphate as a muse. Chem Sci 2024; 15:10408-10415. [PMID: 38994419 PMCID: PMC11234862 DOI: 10.1039/d4sc02206h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Accepted: 06/10/2024] [Indexed: 07/13/2024] Open
Abstract
Imination reactions in water represent a challenge not only because of the high propensity of imines to be hydrolysed but also as a result of the competing hydrate formation through H2O addition to the aldehyde. In the present work we report a successful approach that allows for favouring imitation reactions while silencing hydrate formation. Such remarkable reactivity and selectivity can be attained by fine-tuning the electronic and steric structural features of the ortho-substituents of the carbonyl groups. It resulted from studying the structure-reactivity relationships in a series of condensation reactions between different amines and aldehydes, comparing the results to the ones obtained in the presence of the biologically-relevant pyridoxal phosphate (PLP). The key role of negatively-charged and sterically-crowding units (i.e., sulfonate groups) in disfavouring hydrate formation was corroborated by DFT and steric-hindrance calculations. Furthermore, the best-performing aldehyde leads to higher imine yields, selectivity and stability than those of PLP itself, allowing for the inhibition of a PLP-dependent enzyme (transaminase) through dynamic aldimine exchange. These results will increase the applicability of imine-based dynamic covalent chemistry (DCvC) under physiological conditions and will pave the way for the design of new carbonyl derivatives that might be used in the dynamic modification of biomolecules.
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Affiliation(s)
- Ferran Esteve
- Laboratoire de Chimie Supramoléculaire, Institut de Science et d'Ingénierie Supramoléculaires (ISIS), Université de Strasbourg 8 allée Gaspard Monge Strasbourg 67000 France
| | - Tanguy Rieu
- Laboratoire de Chimie Supramoléculaire, Institut de Science et d'Ingénierie Supramoléculaires (ISIS), Université de Strasbourg 8 allée Gaspard Monge Strasbourg 67000 France
| | - Jean-Marie Lehn
- Laboratoire de Chimie Supramoléculaire, Institut de Science et d'Ingénierie Supramoléculaires (ISIS), Université de Strasbourg 8 allée Gaspard Monge Strasbourg 67000 France
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4
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Esteve F, Rieu T, Lehn JM. Constitutional adaptation to p Ka modulation by remote ester hydrolysis. Chem Sci 2024; 15:7092-7103. [PMID: 38756812 PMCID: PMC11095373 DOI: 10.1039/d4sc01288g] [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: 02/23/2024] [Accepted: 04/09/2024] [Indexed: 05/18/2024] Open
Abstract
The mechanisms through which environmental conditions affect the expression of interconnected species is a key step to comprehending the principles underlying complex chemical processes. In Nature, chemical modifications triggered by the environment have a major impact on the structure and function of biomolecules and regulate different reaction pathways. Yet, minimalistic artificial systems implementing related adaptation behaviours remain barely explored. The hydrolysis of amino acid methyl esters to their corresponding amino acids leads to a drastic change in pKa (ca. 7 and 9, respectively) that protonates the free amino group at physiological conditions. Dynamic covalent libraries (DCvLs) based on amino acid methyl esters and aldehydes respond to such hydrolysis and lead to constitutional adaptation. Each of the libraries studied experiences a DCvL conversion allowing for constituent selection due to the silencing of the zwitterionic amino acids towards imine formation. The selective action of different enzymes on the DCvLs results in states with simplified constitutional distributions and transient chirality. When additional components (i.e., scavengers) that are not affected by hydrolysis are introduced into the dynamic libraries, the amino acid methyl ester hydrolysis induces the up-regulation of the constituents made of these scavenging components. In these systems, the constituent distribution is resolved from a scrambled mixture of imines to a state characterized by the predominance of a single aldimine. Remarkably, although the final libraries display higher "simplexity", the different transient states present an increased complexity that allows for the emergence of organized structures [micelle formation] and distributions [up-regulation of two antagonistic constituents]. This reactive site inhibition by a remote chemical modification resembles the scenario found in some enzymes for the regulation of their activity through proximal post-translational modifications.
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Affiliation(s)
- Ferran Esteve
- Laboratoire de Chimie Supramoléculaire, Institut de Science et d'Ingénierie Supramoléculaires (ISIS), Université de Strasbourg 8 allée Gaspard Monge 67000 Strasbourg France
| | - Tanguy Rieu
- Laboratoire de Chimie Supramoléculaire, Institut de Science et d'Ingénierie Supramoléculaires (ISIS), Université de Strasbourg 8 allée Gaspard Monge 67000 Strasbourg France
| | - Jean-Marie Lehn
- Laboratoire de Chimie Supramoléculaire, Institut de Science et d'Ingénierie Supramoléculaires (ISIS), Université de Strasbourg 8 allée Gaspard Monge 67000 Strasbourg France
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5
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Afari MNK, Lönnberg T. Base-Filling in Double-Helical Nucleic Acids. ChemistryOpen 2024:e202400088. [PMID: 38709096 DOI: 10.1002/open.202400088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Revised: 04/10/2024] [Indexed: 05/07/2024] Open
Abstract
Base-filling, i. e., post-synthetic furnishing of an oligonucleotide scaffold with base moieties or their analogues, is an interesting alternative to the conventional approach of sequential coupling of building blocks (modified or otherwise). Reversible attachment of the base moieties is particularly attractive as it allows the use of dynamic combinatorial chemistry and usually leads to higher fidelity. This concept article summarizes the various backbones and coupling reactions used for base-filling over the past fifteen years, discusses the impact of base stacking and pairing on efficiency and fidelity and highlights potential and realized applications.
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Affiliation(s)
| | - Tuomas Lönnberg
- Department of Chemistry, University of Turku, Henrikinkatu 2, 20500, Turku, Finland
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6
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Zelder F. "Covalent-Disassembly"-Based Approaches For Sensing Applications. Chemistry 2024; 30:e202302705. [PMID: 38179824 DOI: 10.1002/chem.202302705] [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: 08/18/2023] [Revised: 01/04/2024] [Accepted: 01/04/2024] [Indexed: 01/06/2024]
Abstract
The detection of analytes with small molecular probes is crucial for the analysis and understanding of chemical, medicinal, environmental and biological situations as well as processes. Classic detection approaches rely on the concept of molecular recognition and bond formation reactions. Bond breakage reactions have been less explored in similar contexts. This concept article introduces metal-salen and metal-imine complexes as "covalent-disassembly"-based (DB)-probes for detecting polyoxophosphates, thiols, amino acids, HCN and changes in pH. It discusses the roles, importance and combinations of structurally functionalized molecular building blocks in the construction of DB-probes. Applications of optimized DB-probes for analyte detection in live cells and foodstuff are also discussed. Furthermore, the mechanism of the disassembly of a Fe(III)-salen probe upon pyrophosphate binding is presented. Extraordinary selectivity for this analyte was achieved by a multistep disassembly sequence including an unprecedented structural change of the metal complex (i. e. "induced-fit" principle). Design principles of probes for sensing applications following the "covalent-disassembly" approach are summarized, which will help improving current systems, but will also facilitate the development of new DB-probes for challenging analytic targets.
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Affiliation(s)
- F Zelder
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057, Zurich, Switzerland
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7
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Rieu T, Osypenko A, Lehn JM. Triple Adaptation of Constitutional Dynamic Networks of Imines in Response to Micellar Agents: Internal Uptake-Interfacial Localization-Shape Transition. J Am Chem Soc 2024; 146:9096-9111. [PMID: 38526415 DOI: 10.1021/jacs.3c14200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/26/2024]
Abstract
Understanding the behavior of complex chemical reaction networks and how environmental conditions can modulate their organization as well as the associated outcomes may take advantage of the design of related artificial systems. Microenvironments with defined boundaries are of particular interest for their unique properties and prebiotic significance. Dynamic covalent libraries (DCvLs) and their underlying constitutional dynamic networks (CDNs) have been shown to be appropriate for studying adaptation to several processes, including compartmentalization. However, microcompartments (e.g., micelles) provide specific environments for the selective protection from interfering reactions such as hydrolysis and an enhanced chemical promiscuity due to the interface, governing different processes of network modulation. Different interactions between the micelles and the library constituents lead to dynamic sensing, resulting in different expressions of the network through pattern generation. The constituents integrated into the micelles are protected from hydrolysis and hence preferentially expressed in the network composition at the cost of constitutionally linked members. In the present work, micellar integration was observed for two processes: internal uptake based on hydrophobic forces and interfacial localization relying on attractive electrostatic interactions. The latter drives a complex triple adaptation of the network with feedback on the shape of the self-assembled entity. Our results demonstrate how microcompartments can enforce the expression of constituents of CDNs by reducing the hydrolysis of uptaken members, unravelling processes that govern the response of reactions networks. Such studies open the way toward using DCvLs and CDNs to understand the emergence of complexity within reaction networks by their interactions with microenvironments.
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Affiliation(s)
- Tanguy Rieu
- Laboratoire de Chimie Supramoléculaire, Institut de Science et d'Ingénierie Supramoléculaires (ISIS), Université de Strasbourg, 8 allée Gaspard Monge, 67000 Strasbourg, France
| | - Artem Osypenko
- Laboratoire de Chimie Supramoléculaire, Institut de Science et d'Ingénierie Supramoléculaires (ISIS), Université de Strasbourg, 8 allée Gaspard Monge, 67000 Strasbourg, France
| | - Jean-Marie Lehn
- Laboratoire de Chimie Supramoléculaire, Institut de Science et d'Ingénierie Supramoléculaires (ISIS), Université de Strasbourg, 8 allée Gaspard Monge, 67000 Strasbourg, France
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8
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Mason M, Belvisi L, Pignataro L, Dal Corso A. A Tight Contact: The Expanding Application of Salicylaldehydes in Lysine-Targeting Covalent Drugs. Chembiochem 2024; 25:e202300743. [PMID: 37986243 DOI: 10.1002/cbic.202300743] [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: 10/30/2023] [Revised: 11/16/2023] [Accepted: 11/17/2023] [Indexed: 11/22/2023]
Abstract
The installation of aldehydes into synthetic protein ligands is an efficient strategy to engage protein lysine residues in remarkably stable imine bonds and augment the compound affinity and selectivity for their biological targets. The high frequency of lysine residues in proteins and the reversibility of the covalent ligand-protein bond support the application of aldehyde-bearing ligands, holding promises for their future use as drugs. This review highlights the increasing exploitation of salicylaldehyde modules in various classes of protein binders, aimed at the reversible-covalent engagement of lysine residues.
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Affiliation(s)
- Mattia Mason
- Dipartimento di Chimica, Università degli Studi di Milano, Via C. Golgi, 19, 20133, Milan, Italy
| | - Laura Belvisi
- Dipartimento di Chimica, Università degli Studi di Milano, Via C. Golgi, 19, 20133, Milan, Italy
| | - Luca Pignataro
- Dipartimento di Chimica, Università degli Studi di Milano, Via C. Golgi, 19, 20133, Milan, Italy
| | - Alberto Dal Corso
- Dipartimento di Chimica, Università degli Studi di Milano, Via C. Golgi, 19, 20133, Milan, Italy
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9
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Deng Y, Zhang Q, Feringa BL. Dynamic Chemistry Toolbox for Advanced Sustainable Materials. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2308666. [PMID: 38321810 PMCID: PMC11005721 DOI: 10.1002/advs.202308666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 12/28/2023] [Indexed: 02/08/2024]
Abstract
Developing dynamic chemistry for polymeric materials offers chemical solutions to solve key problems associated with current plastics. Mechanical performance and dynamic function are equally important in material design because the former determines the application scope and the latter enables chemical recycling and hence sustainability. However, it is a long-term challenge to balance the subtle trade-off between mechanical robustness and dynamic properties in a single material. The rise of dynamic chemistry, including supramolecular and dynamic covalent chemistry, provides many opportunities and versatile molecular tools for designing constitutionally dynamic materials that can adapt, repair, and recycle. Facing the growing social need for developing advanced sustainable materials without compromising properties, recent progress showing how the toolbox of dynamic chemistry can be explored to enable high-performance sustainable materials by molecular engineering strategies is discussed here. The state of the art and recent milestones are summarized and discussed, followed by an outlook toward future opportunities and challenges present in this field.
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Affiliation(s)
- Yuanxin Deng
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research CenterSchool of Chemistry and Technology130 Meilong RoadShanghai200237China
- Stratingh Institute for Chemistry and Zernike Institute for Advanced MaterialsFaculty of Science and EngineeringUniversity of GroningenNijenborgh 4Groningen9747 AGThe Netherlands
| | - Qi Zhang
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research CenterSchool of Chemistry and Technology130 Meilong RoadShanghai200237China
- Stratingh Institute for Chemistry and Zernike Institute for Advanced MaterialsFaculty of Science and EngineeringUniversity of GroningenNijenborgh 4Groningen9747 AGThe Netherlands
| | - Ben L. Feringa
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research CenterSchool of Chemistry and Technology130 Meilong RoadShanghai200237China
- Stratingh Institute for Chemistry and Zernike Institute for Advanced MaterialsFaculty of Science and EngineeringUniversity of GroningenNijenborgh 4Groningen9747 AGThe Netherlands
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10
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McGary LC, Fetter CM, Gu M, Hamilton MC, Kumar H, Kuehm OP, Douglas CD, Bearne SL. Interrogating l-fuconate dehydratase with tartronate and 3-hydroxypyruvate reveals subtle differences within the mandelate racemase-subgroup of the enolase superfamily. Arch Biochem Biophys 2024; 754:109924. [PMID: 38354877 DOI: 10.1016/j.abb.2024.109924] [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: 12/16/2023] [Revised: 01/27/2024] [Accepted: 02/05/2024] [Indexed: 02/16/2024]
Abstract
Enzymes of the enolase superfamily share a conserved structure and a common partial reaction (i.e., metal-assisted, Brønsted base-catalyzed enol(ate) formation). The architectures of the enolization apparatus at the active sites of the mandelate racemase (MR)-subgroup members MR and l-fuconate dehydratase (FucD) are almost indistinguishable at the structural level. Tartronate and 3-hydroxypyruvate (3-HP) recognize the enolization apparatus and can be used to interrogate the active sites for differences that may not be apparent from structural data. We report a circular dichroism-based assay of FucD activity that monitors the change in ellipticity at 216 nm (Δ[Θ]S-P = 8985 ± 87 deg cm2 mol-1) accompanying the conversion of l-fuconate to 2-keto-3-deoxy-l-fuconate. Tartronate was a linear mixed-type inhibitor of FucD (Ki = 8.4 ± 0.7 mM, αKi = 63 ± 11 mM), binding 18-fold weaker than l-fuconate, compared with 2-fold weaker binding of tartronate by MR relative to mandelate. 3-HP irreversibly inactivated FucD (kinact/KI = 0.018 ± 0.002 M-1s-1) with an efficiency that was ∼4.6 × 103-fold less than that observed with MR. The inactivation arose predominantly from modifications at multiple sites and Tris-HCl, but not l-fuconate, afforded protection against inactivation. Similar to the reaction of 3-HP with MR, 3-HP modified the Brønsted base catalyst (Lys 220) at the active site of FucD, which was facilitated by the Brønsted acid catalyst His 351. Thus, the interactions of tartronate and 3-HP with MR and FucD revealed differences in binding affinity and reactivity that differentiated between the enzymes' enolization apparatuses.
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Affiliation(s)
- Laura C McGary
- Department of Biochemistry and Molecular Biology, Dalhousie University, Halifax, NS, B3H 4R2, Canada
| | - Christopher M Fetter
- Department of Biochemistry and Molecular Biology, Dalhousie University, Halifax, NS, B3H 4R2, Canada
| | - Minglu Gu
- Department of Biochemistry and Molecular Biology, Dalhousie University, Halifax, NS, B3H 4R2, Canada
| | - Meghan C Hamilton
- Department of Biochemistry and Molecular Biology, Dalhousie University, Halifax, NS, B3H 4R2, Canada
| | - Himank Kumar
- Department of Biochemistry and Molecular Biology, Dalhousie University, Halifax, NS, B3H 4R2, Canada
| | - Oliver P Kuehm
- Department of Biochemistry and Molecular Biology, Dalhousie University, Halifax, NS, B3H 4R2, Canada
| | - Colin D Douglas
- Department of Biochemistry and Molecular Biology, Dalhousie University, Halifax, NS, B3H 4R2, Canada
| | - Stephen L Bearne
- Department of Biochemistry and Molecular Biology, Dalhousie University, Halifax, NS, B3H 4R2, Canada; Department of Chemistry, Dalhousie University, Halifax, NS, B3H 4R2, Canada.
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11
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Wamser R, Zhang X, Kuropka B, Arkona C, Rademann J. Protein-Templated Ugi Reactions versus In-Situ Ligation Screening: Two Roads to the Identification of SARS-CoV-2 Main Protease Inhibitors. Chemistry 2024; 30:e202303940. [PMID: 38246870 DOI: 10.1002/chem.202303940] [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: 11/27/2023] [Revised: 01/10/2024] [Accepted: 01/11/2024] [Indexed: 01/23/2024]
Abstract
Protein-templated fragment ligation was established as a method for the rapid identification of high affinity ligands, and multicomponent reactions (MCR) such as the Ugi four-component reaction (Ugi 4CR) have been efficient in the synthesis of drug candidates. Thus, the combination of both strategies should provide a powerful approach to drug discovery. Here, we investigate protein-templated Ugi 4CR quantitatively using a fluorescence-based enzyme assay, HPLC-QTOF mass spectrometry (MS), and native protein MS with SARS-CoV-2 main protease as template. Ugi reactions were analyzed in aqueous buffer at varying pH and fragment concentration. Potent inhibitors of the protease were formed in presence of the protein via Ugi 4CR together with Ugi three-component reaction (Ugi 3CR) products. Binding of inhibitors to the protease was confirmed by native MS and resulted in the dimerization of the protein target. Formation of Ugi products was, however, more efficient in the non-templated reaction, apparently due to interactions of the protein with the isocyanide and imine fragments. Consequently, in-situ ligation screening of Ugi 4CR products was identified as a superior approach to the discovery of SARS-CoV-2 protease inhibitors.
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Affiliation(s)
- Rebekka Wamser
- Department of Biology, Chemistry and Pharmacy, Institute of Pharmacy, Medicinal Chemistry, Freie Universität Berlin, Königin-Luise-Str.2+4, 14195, Berlin, Germany
| | - Xinting Zhang
- Department of Biology, Chemistry and Pharmacy, Institute of Pharmacy, Medicinal Chemistry, Freie Universität Berlin, Königin-Luise-Str.2+4, 14195, Berlin, Germany
| | - Benno Kuropka
- Department of Biology, Chemistry and Pharmacy, Institute of Chemistry and Biochemistry, Freie Universität Berlin, Thielallee 63, 14195, Berlin, Germany
| | - Christoph Arkona
- Department of Biology, Chemistry and Pharmacy, Institute of Pharmacy, Medicinal Chemistry, Freie Universität Berlin, Königin-Luise-Str.2+4, 14195, Berlin, Germany
| | - Jörg Rademann
- Department of Biology, Chemistry and Pharmacy, Institute of Pharmacy, Medicinal Chemistry, Freie Universität Berlin, Königin-Luise-Str.2+4, 14195, Berlin, Germany
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12
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Ma Y, Morozova SM, Kumacheva E. From Nature-Sourced Polysaccharide Particles to Advanced Functional Materials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024:e2312707. [PMID: 38391153 DOI: 10.1002/adma.202312707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2023] [Revised: 02/15/2024] [Indexed: 02/24/2024]
Abstract
Polysaccharides constitute over 90% of the carbohydrate mass in nature, which makes them a promising feedstock for manufacturing sustainable materials. Polysaccharide particles (PSPs) are used as effective scavengers, carriers of chemical and biological cargos, and building blocks for the fabrication of macroscopic materials. The biocompatibility and degradability of PSPs are advantageous for their uses as biomaterials with more environmental friendliness. This review highlights the progresses in PSP applications as advanced functional materials, by describing PSP extraction, preparation, and surface functionalization with a variety of functional groups, polymers, nanoparticles, and biologically active species. This review also outlines the fabrication of PSP-derived macroscopic materials, as well as their applications in soft robotics, sensing, scavenging, water harvesting, drug delivery, and bioengineering. The paper is concluded with an outlook providing perspectives in the development and applications of PSP-derived materials.
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Affiliation(s)
- Yingshan Ma
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, M5S 3H6, Canada
| | - Sofia M Morozova
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, M5S 3H6, Canada
- Center of Fluid Physics and Soft Matter, N.E. Bauman Moscow State Technical University, 5/1 2-nd Baumanskaya street, Moscow, 105005, Russia
| | - Eugenia Kumacheva
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, M5S 3H6, Canada
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, 200 College Street, Toronto, Ontario, M5S 3E5, Canada
- The Institute of Biomaterials and Biomedical Engineering, University of Toronto, 4 Taddle Creek Road, Toronto, Ontario, M5S 3G9, Canada
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13
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Haggett JG, Domaille DW. ortho-Boronic Acid Carbonyl Compounds and Their Applications in Chemical Biology. Chemistry 2024; 30:e202302485. [PMID: 37967030 DOI: 10.1002/chem.202302485] [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: 07/31/2023] [Revised: 10/07/2023] [Accepted: 11/13/2023] [Indexed: 11/17/2023]
Abstract
Iminoboronates and diazaborines are related classes of compounds that feature an imine ortho to an arylboronic acid (iminoboronate) or a hydrazone that cyclizes with an ortho arylboronic acid (diazaborine). Rather than acting as independent chemical motifs, the arylboronic acid impacts the rate of imine/hydrazone formation, hydrolysis, and exchange with competing nucleophiles. Increasing evidence has shown that the imine/hydrazone functionality also impacts arylboronic acid reactivity toward diols and reactive oxygen and nitrogen species (ROS/RNS). Untangling the communication between C=N linked functionalities and arylboronic acids has revealed a powerful and tunable motif for bioconjugation chemistries and other applications in chemical biology. Here, we survey the applications of iminoboronates and diazaborines in these fields with an eye toward understanding their utility as a function of neighboring group effects.
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Affiliation(s)
- Jack G Haggett
- Department of Chemistry, Colorado School of Mines, 1500 Illinois St., Golden, CO 80401, USA
| | - Dylan W Domaille
- Department of Chemistry, Colorado School of Mines, 1500 Illinois St., Golden, CO 80401, USA
- Quantitative Biology and Engineering Program, Colorado School of Mines, 1500 Illinois St., Golden, CO 80401, USA
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14
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Weigel RK, Rangamani A, Alabi CA. Synthetically encoded complementary oligomers. Nat Rev Chem 2023; 7:875-888. [PMID: 37973830 DOI: 10.1038/s41570-023-00556-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/19/2023] [Indexed: 11/19/2023]
Abstract
Creating the next generation of advanced materials will require controlling molecular architecture to a degree typically achieved only in biopolymers. Sequence-defined polymers take inspiration from biology by using chain length and monomer sequence as handles for tuning structure and function. These sequence-defined polymers can assemble into discrete structures, such as molecular duplexes, via reversible interactions between functional groups. Selectivity can be attained by tuning the monomer sequence, thereby creating the need for chemical platforms that can produce sequence-defined polymers at scale. Developing sequence-defined polymers that are specific for their complementary sequence and achieve their desired binding strengths is critical for producing increasingly complex structures for new functional materials. In this Review Article, we discuss synthetic platforms that produce sequence-defined, duplex-forming oligomers of varying length, strength and association mode, and highlight several analytical techniques used to characterize their hybridization.
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Affiliation(s)
- R Kenton Weigel
- Robert F. Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY, USA
| | - Adithya Rangamani
- Robert F. Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY, USA
| | - Christopher A Alabi
- Robert F. Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY, USA.
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15
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van Dam A, van Schendel R, Gangarapu S, Zuilhof H, Smulders MMJ. DFT Study of Imine-Exchange Reactions in Iron(II)-Coordinated Pincers. Chemistry 2023; 29:e202301795. [PMID: 37560922 DOI: 10.1002/chem.202301795] [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: 06/05/2023] [Revised: 08/08/2023] [Accepted: 08/10/2023] [Indexed: 08/11/2023]
Abstract
The imine bond is among the most applied motifs in dynamic covalent chemistry. Although its uses are varied and often involve coordination to a transition metal for stability, mechanistic studies on imine exchange reactions so far have not included metal coordination. Herein, we investigated the condensation and transimination reactions of an Fe2+ -coordinated diimine pyridine pincer, employing wB97XD/6-311G(2d,2p) DFT calculations in acetonitrile. We first experimentally confirmed that Fe2+ is strongly coordinated by these pincers, and is thus a justified model ion. When considering a four-membered ring-shaped transition state for proton transfers, the required activation energies for condensation and transimination reaction exceeded the values expected for reactions known to be spontaneous at room temperature. The nature of the incoming and exiting amines and the substituents on the para-position of the pincer had no effect on this. Replacing Fe2+ with Zn2+ or removing it altogether did not reduce it either. However, the addition of two ethylamine molecules lowered the energy barriers to be compatible with experiment (19.4 and 23.2 kcal/mol for condensation and transimination, respectively). Lastly, the energy barrier of condensation of a non-coordinated pincer was significantly higher than found for Fe2+ -coordinating pincers, underlining the catalyzing effect of metal coordination on imine exchange reactions.
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Affiliation(s)
- Annemieke van Dam
- Laboratory of Organic Chemistry, Wageningen University, Stippeneng 4, 6708WE, Wageningen, The Netherlands
| | - Robin van Schendel
- Laboratory of Organic Chemistry, Wageningen University, Stippeneng 4, 6708WE, Wageningen, The Netherlands
| | - Satesh Gangarapu
- Laboratory of Organic Chemistry, Wageningen University, Stippeneng 4, 6708WE, Wageningen, The Netherlands
| | - Han Zuilhof
- Laboratory of Organic Chemistry, Wageningen University, Stippeneng 4, 6708WE, Wageningen, The Netherlands
- School of Pharmaceutical Sciences and Technology, Tianjin University, 92 Weijin Road, Tianjin, 300072, P.R. China
| | - Maarten M J Smulders
- Laboratory of Organic Chemistry, Wageningen University, Stippeneng 4, 6708WE, Wageningen, The Netherlands
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16
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Esteve F, Rahmatova F, Lehn JM. Supramolecular multivalency effects enhance imine formation in aqueous medium allowing for dynamic modification of enzymatic activity. Chem Sci 2023; 14:10249-10257. [PMID: 37772124 PMCID: PMC10530293 DOI: 10.1039/d3sc04128j] [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: 08/07/2023] [Accepted: 09/05/2023] [Indexed: 09/30/2023] Open
Abstract
Imine formation under physiological conditions represents a challenging reaction due to the strong propensity of aldimines to be hydrolyzed. Herein we disclose the remarkable effect of supramolecular multivalency on increasing imine stability. A family of reactive aldehydes was synthesized bearing supramolecularly-active sites within their structure. The imine formation activity for such aldehydes was evaluated and compared with model aldehydes. The reaction of the best-performing species - containing two carboxylate groups-with a set of amines showed a significant decrease in imine yields as the degree of supramolecular multivalency between sidechains decreased. The reversible conjugation of amino acid derivatives and small peptides was also assayed, with excellent selectivities for the imine formation at the Nα position even in substrates containing competing sites. Preliminary results on protein bioconjugation revealed that a model enzyme could be dynamically inhibited upon reaction with the aldehyde, with its native activity being recovered by displacing the imine bonds with a suitable chemical effector (i.e., acylhydrazide).
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Affiliation(s)
- Ferran Esteve
- Laboratoire de Chimie Supramoléculaire, Institut de Science et d'Ingénierie Supramoléculaires (ISIS), Université de Strasbourg 8 allée Gaspard Monge 67000 Strasbourg France
| | - Fidan Rahmatova
- Laboratoire de Chimie Supramoléculaire, Institut de Science et d'Ingénierie Supramoléculaires (ISIS), Université de Strasbourg 8 allée Gaspard Monge 67000 Strasbourg France
| | - Jean-Marie Lehn
- Laboratoire de Chimie Supramoléculaire, Institut de Science et d'Ingénierie Supramoléculaires (ISIS), Université de Strasbourg 8 allée Gaspard Monge 67000 Strasbourg France
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17
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Verhoef CJA, Kay DF, van Dijck L, Doveston RG, Brunsveld L, Leney AC, Cossar PJ. Tracking the mechanism of covalent molecular glue stabilization using native mass spectrometry. Chem Sci 2023; 14:6756-6762. [PMID: 37350830 PMCID: PMC10284121 DOI: 10.1039/d3sc01732j] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 05/30/2023] [Indexed: 06/24/2023] Open
Abstract
Molecular glues are powerful tools for the control of protein-protein interactions. Yet, the mechanisms underlying multi-component protein complex formation remain poorly understood. Native mass spectrometry (MS) detects multiple protein species simultaneously, providing an entry to elucidate these mechanisms. Here, for the first time, covalent molecular glue stabilization was kinetically investigated by combining native MS with biophysical and structural techniques. This approach elucidated the stoichiometry of a multi-component protein-ligand complex, the assembly order, and the contributions of covalent versus non-covalent binding events that govern molecular glue activity. Aldehyde-based molecular glue activity is initially regulated by cooperative non-covalent binding, followed by slow covalent ligation, further enhancing stabilization. This study provides a framework to investigate the mechanisms of covalent small molecule ligation and informs (covalent) molecular glue development.
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Affiliation(s)
- Carlo J A Verhoef
- Department of Biomedical Engineering and Institute for Complex Molecular Systems, Eindhoven University of Technology Eindhoven 5600 MB The Netherlands
| | - Danielle F Kay
- School of Biosciences, University of Birmingham Birmingham B15 2TT UK
| | - Lars van Dijck
- Department of Biomedical Engineering and Institute for Complex Molecular Systems, Eindhoven University of Technology Eindhoven 5600 MB The Netherlands
| | - Richard G Doveston
- Leicester Institute of Structural and Chemical Biology and School of Chemistry, University of Leicester Leicester LE1 7RH UK
| | - Luc Brunsveld
- Department of Biomedical Engineering and Institute for Complex Molecular Systems, Eindhoven University of Technology Eindhoven 5600 MB The Netherlands
| | - Aneika C Leney
- School of Biosciences, University of Birmingham Birmingham B15 2TT UK
| | - Peter J Cossar
- Department of Biomedical Engineering and Institute for Complex Molecular Systems, Eindhoven University of Technology Eindhoven 5600 MB The Netherlands
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18
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Waehayee A, Duangkamol C, Chotsawat M, Lerdwiriyanupap T, Pewklang T, Nakajima H, Butburee T, Kamkaew A, Suthirakun S, Siritanon T. Controlling the Photocatalytic Activity and Benzylamine Photooxidation Selectivity of Bi 2WO 6 via Ion Substitution: Effects of Electronegativity. Inorg Chem 2023; 62:3506-3517. [PMID: 36787191 DOI: 10.1021/acs.inorgchem.2c03860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
Doping or ion substitution is often used as an effective strategy to improve photocatalytic activities of several semiconductors. Most frequently, the dopants provide extra states to increase light absorption, alter the electronic structure, or lower the carrier recombination. This work focuses on ion substitution in Bi2WO6, where the dopants modify band-edge potentials of the catalysts. Specifically, we investigate how the electronegativity (EN) of the dopant could be used to tune the band-edge potentials and how such changes influence the photocatalytic mechanism. Compared to Te that has a lower EN, I lowers the band-edge potentials. While substitutions with both ions enhance Rh B photodegradation and benzylamine photooxidation, the modified band potentials of I-doped Bi2WO6 influence the benzylamine photooxidation pathway, resulting in higher selectivity. Additionally, substitution of I7+ in the Bi2WO6 lattice improves the morphologies, decreases the band-gap energy, and reduces the carrier recombination. As a result, I-doped Bi2WO6 shows almost 3 times higher %conversion while maintaining 100% selectivity in the oxidative coupling of benzylamine. The findings here signify the importance of the choices of dopants on the photocatalytic reactions and would benefit the design of other related materials for such applications.
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Affiliation(s)
- Anurak Waehayee
- School of Chemistry, Institute of Science, Suranaree University of Technology, 111 University Avenue, Muang, Nakhon Ratchasima 30000, Thailand.,Institute of Research and Development, Suranaree University of Technology, 111 University Avenue, Muang, Nakhon Ratchasima 30000, Thailand
| | - Chuthamat Duangkamol
- Division of Basic and Medical Sciences, Faculty of Allied Health Sciences, Pathumthani University, Pathum Thani 12000, Thailand
| | - Maneerat Chotsawat
- Institute of Research and Development, Suranaree University of Technology, 111 University Avenue, Muang, Nakhon Ratchasima 30000, Thailand
| | - Tharit Lerdwiriyanupap
- Institute of Research and Development, Suranaree University of Technology, 111 University Avenue, Muang, Nakhon Ratchasima 30000, Thailand
| | - Thitima Pewklang
- School of Chemistry, Institute of Science, Suranaree University of Technology, 111 University Avenue, Muang, Nakhon Ratchasima 30000, Thailand
| | - Hideki Nakajima
- Synchrotron Light Research Institute, 111 University Avenue, Nakhon Ratchasima 30000, Thailand
| | - Teera Butburee
- National Nanotechnology Center, National Science and Technology Development Agency, 111 Thailand Science Park, Pathum Thani 12120, Thailand
| | - Anyanee Kamkaew
- School of Chemistry, Institute of Science, Suranaree University of Technology, 111 University Avenue, Muang, Nakhon Ratchasima 30000, Thailand
| | - Suwit Suthirakun
- School of Chemistry, Institute of Science, Suranaree University of Technology, 111 University Avenue, Muang, Nakhon Ratchasima 30000, Thailand
| | - Theeranun Siritanon
- School of Chemistry, Institute of Science, Suranaree University of Technology, 111 University Avenue, Muang, Nakhon Ratchasima 30000, Thailand
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19
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Cibotaru S, Nicolescu A, Marin L. Dynamic PEGylated phenothiazine imines; synthesis, photophysical behavior and reversible luminescence switching in response to external stimuli. J Photochem Photobiol A Chem 2023. [DOI: 10.1016/j.jphotochem.2022.114282] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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20
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Self-Assembly of a Purely Organic Bowl in Water via Acylhydrazone Formation. Molecules 2023; 28:molecules28030976. [PMID: 36770651 PMCID: PMC9921396 DOI: 10.3390/molecules28030976] [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: 12/07/2022] [Revised: 01/05/2023] [Accepted: 01/11/2023] [Indexed: 01/21/2023] Open
Abstract
A bowl-shaped molecule can be self-assembled by condensing a triscationic hexaaldehyde compound and three equiv. of a dihydrazide linkers in pure water. The molecular bowl is thus composed of a triscationic π-electron deficient platform, as well as a hexagonal rim that contains six acylhydrazone functions. When the counteranions are chloride, the solid-state structure reveals that this molecular bowl undergoes dimerization via N-H···Cl hydrogen bonds, forming a cage-like dimer with a huge inner cavity. This molecular bowl can employ its cavity to accommodate a hydrophobic guest, namely 1-adamantanecarboxylic acid in aqueous media.
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21
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Cibotaru S, Ailincai D, Andreica BI, Cheng X, Marin L. TEGylated Phenothiazine-Imine-Chitosan Materials as a Promising Framework for Mercury Recovery. Gels 2022; 8:692. [PMID: 36354600 PMCID: PMC9689029 DOI: 10.3390/gels8110692] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 10/19/2022] [Accepted: 10/21/2022] [Indexed: 08/26/2023] Open
Abstract
This paper reports new solid materials based on TEGylated phenothiazine and chitosan, with a high capacity to recover mercury ions from aqueous solutions. They were prepared by hydrogelation of chitosan with a formyl derivative of TEGylated phenothiazine, followed by lyophilization. Their structural and supramolecular characterization was carried out by 1H-NMR and FTIR spectroscopy, as well as X-ray diffraction and polarized light microscopy. Their morphology was investigated by scanning electron microscopy and their photophysical behaviour was examined by UV/Vis and emission spectroscopy. Swelling evaluation in different aqueous media indicated the key role played by the supramolecular organization for their hydrolytic stability. Mercury recovery experiments and the analysis of the resulting materials by X-ray diffraction and FTIR spectroscopy showed a high ability of the studied materials to bind mercury ions by coordination with the sulfur atom of phenothiazine, imine linkage, and amine units of chitosan.
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Affiliation(s)
- Sandu Cibotaru
- “Petru Poni” Institute of Macromolecular Chemistry, Gr. Ghica Voda Alley, 41A, 700487 Iasi, Romania
| | - Daniela Ailincai
- “Petru Poni” Institute of Macromolecular Chemistry, Gr. Ghica Voda Alley, 41A, 700487 Iasi, Romania
| | - Bianca-Iustina Andreica
- “Petru Poni” Institute of Macromolecular Chemistry, Gr. Ghica Voda Alley, 41A, 700487 Iasi, Romania
| | - Xinjian Cheng
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430079, China
| | - Luminita Marin
- “Petru Poni” Institute of Macromolecular Chemistry, Gr. Ghica Voda Alley, 41A, 700487 Iasi, Romania
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22
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Dascalu AE, Halgreen L, Torres-Huerta A, Valkenier H. Dynamic covalent chemistry with azines. Chem Commun (Camb) 2022; 58:11103-11106. [PMID: 36102679 DOI: 10.1039/d2cc03523e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dynamic covalent chemistry is used in many applications that require both the stability of covalent bonds and the possibility to exchange building blocks. Here we present azines as a dynamic covalent functional group that combines the best characteristics of imines and acylhydrazones. We show that azines are stable in the presence of water and that dynamic combinatorial libraries of azines and aldehydes equilibrate in less than an hour.
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Affiliation(s)
- Anca-Elena Dascalu
- Université libre de Bruxelles (ULB), Ecole polytechnique de Bruxelles, Engineering Molecular NanoSystems, Avenue Franklin Roosevelt 50, 1050, Brussels, Belgium.
| | - Lau Halgreen
- Université libre de Bruxelles (ULB), Ecole polytechnique de Bruxelles, Engineering Molecular NanoSystems, Avenue Franklin Roosevelt 50, 1050, Brussels, Belgium.
| | - Aaron Torres-Huerta
- Université libre de Bruxelles (ULB), Ecole polytechnique de Bruxelles, Engineering Molecular NanoSystems, Avenue Franklin Roosevelt 50, 1050, Brussels, Belgium.
| | - Hennie Valkenier
- Université libre de Bruxelles (ULB), Ecole polytechnique de Bruxelles, Engineering Molecular NanoSystems, Avenue Franklin Roosevelt 50, 1050, Brussels, Belgium.
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23
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Li M, Dong Y, Quan M, Jiang W. Stabilization of Imines and Hemiaminals in Water by an Endo‐Functionalized Container Molecule. Angew Chem Int Ed Engl 2022; 61:e202208508. [DOI: 10.1002/anie.202208508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Indexed: 11/09/2022]
Affiliation(s)
- Ming‐Shuang Li
- School of Chemistry and Chemical Engineering Harbin Institute of Technology No.92 Xidazhi Street Harbin 150001 China
- Shenzhen Grubbs Institute Guangdong Provincial Key Laboratory of Catalysis, and Department of Chemistry Southern University of Science and Technology (SUSTech) Xueyuan Blvd 1088 Shenzhen 518055 China
| | - Yi‐Wei Dong
- Shenzhen Grubbs Institute Guangdong Provincial Key Laboratory of Catalysis, and Department of Chemistry Southern University of Science and Technology (SUSTech) Xueyuan Blvd 1088 Shenzhen 518055 China
| | - Mao Quan
- Shenzhen Grubbs Institute Guangdong Provincial Key Laboratory of Catalysis, and Department of Chemistry Southern University of Science and Technology (SUSTech) Xueyuan Blvd 1088 Shenzhen 518055 China
| | - Wei Jiang
- Shenzhen Grubbs Institute Guangdong Provincial Key Laboratory of Catalysis, and Department of Chemistry Southern University of Science and Technology (SUSTech) Xueyuan Blvd 1088 Shenzhen 518055 China
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24
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Seidi F, Zhong Y, Xiao H, Jin Y, Crespy D. Degradable polyprodrugs: design and therapeutic efficiency. Chem Soc Rev 2022; 51:6652-6703. [PMID: 35796314 DOI: 10.1039/d2cs00099g] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Prodrugs are developed to increase the therapeutic properties of drugs and reduce their side effects. Polyprodrugs emerged as highly efficient prodrugs produced by the polymerization of one or several drug monomers. Polyprodrugs can be gradually degraded to release therapeutic agents. The complete degradation of polyprodrugs is an important factor to guarantee the successful disposal of the drug delivery system from the body. The degradation of polyprodrugs and release rate of the drugs can be controlled by the type of covalent bonds linking the monomer drug units in the polymer structure. Therefore, various types of polyprodrugs have been developed based on polyesters, polyanhydrides, polycarbonates, polyurethanes, polyamides, polyketals, polymetallodrugs, polyphosphazenes, and polyimines. Furthermore, the presence of stimuli-responsive groups, such as redox-responsive linkages (disulfide, boronate ester, metal-complex, and oxalate), pH-responsive linkages (ester, imine, hydrazone, acetal, orthoester, P-O and P-N), light-responsive (metal-complex, o-nitrophenyl groups) and enzyme-responsive linkages (ester, peptides) allow for a selective degradation of the polymer backbone in targeted tumors. We envision that new strategies providing a more efficient synergistic therapy will be developed by combining polyprodrugs with gene delivery segments and targeting moieties.
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Affiliation(s)
- Farzad Seidi
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources and International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing 210037, China. .,Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong 21210, Thailand.
| | - Yajie Zhong
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources and International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing 210037, China.
| | - Huining Xiao
- Department of Chemical Engineering, University of New Brunswick, Fredericton, New Brunswick, E3B 5A3, Canada
| | - Yongcan Jin
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources and International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing 210037, China.
| | - Daniel Crespy
- Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong 21210, Thailand.
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25
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Li MS, Dong YW, Quan M, Jiang W. Stabilization of Imines and Hemiaminals in Water by an Endo‐Functionalized Container Molecule. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202208508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ming-Shuang Li
- Southern University of Science and Technology Department of Chemistry CHINA
| | - Yi-Wei Dong
- Southern University of Science and Technology Department of Chemistry CHINA
| | - Mao Quan
- Southern University of Science and Technology Department of Chemistry CHINA
| | - Wei Jiang
- Southern University of Science and Technology Department of Chemistry Xueyuan Blvd 1088, Nanshan District 518055 Shenzhen CHINA
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26
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Casciuc I, Osypenko A, Kozibroda B, Horvath D, Marcou G, Bonachera F, Varnek A, Lehn JM. Toward in Silico Modeling of Dynamic Combinatorial Libraries. ACS CENTRAL SCIENCE 2022; 8:804-813. [PMID: 35756377 PMCID: PMC9228562 DOI: 10.1021/acscentsci.2c00048] [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: 01/18/2022] [Indexed: 06/15/2023]
Abstract
Dynamic combinatorial libraries (DCLs) display adaptive behavior, enabled by the reversible generation of their molecular constituents from building blocks, in response to external effectors, e.g., protein receptors. So far, chemoinformatics has not yet been used for the design of DCLs-which comprise a radically different set of challenges compared to classical library design. Here, we propose a chemoinformatic model for theoretically assessing the composition of DCLs in the presence and the absence of an effector. An imine-based DCL in interaction with the effector human carbonic anhydrase II (CA II) served as a case study. Support vector regression models for the imine formation constants and imine-CA II binding were derived from, respectively, a set of 276 imines synthesized and experimentally studied in this work and 4350 inhibitors of CA II from ChEMBL. These models predict constants for all DCL constituents, to feed software assessing equilibrium concentrations. They are publicly available on the dedicated website. Models rationally selected two amines and two aldehydes predicted to yield stable imines with high affinity for CA II and provided a virtual illustration on how effector affinity regulates DCL members.
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Affiliation(s)
- Iuri Casciuc
- Laboratoire
de Chémoinformatique UMR 7140 CNRS, Institut Le Bel 4, rue B. Pascal 67081 Strasbourg, France
- Laboratoire
de Chimie Supramoléculaire, Institut de Science et d’Ingénierie
Supramoléculaires (ISIS), Université
de Strasbourg, 8 allée Gaspard Monge, 67000 Strasbourg, France
| | - Artem Osypenko
- Laboratoire
de Chimie Supramoléculaire, Institut de Science et d’Ingénierie
Supramoléculaires (ISIS), Université
de Strasbourg, 8 allée Gaspard Monge, 67000 Strasbourg, France
| | - Bohdan Kozibroda
- Laboratoire
de Chimie Supramoléculaire, Institut de Science et d’Ingénierie
Supramoléculaires (ISIS), Université
de Strasbourg, 8 allée Gaspard Monge, 67000 Strasbourg, France
- Institute
of High Technologies, Taras Shevchenko National
University of Kyiv, 4g
Hlushkova Avenue, 03022 Kyiv, Ukraine
| | - Dragos Horvath
- Laboratoire
de Chémoinformatique UMR 7140 CNRS, Institut Le Bel 4, rue B. Pascal 67081 Strasbourg, France
| | - Gilles Marcou
- Laboratoire
de Chémoinformatique UMR 7140 CNRS, Institut Le Bel 4, rue B. Pascal 67081 Strasbourg, France
| | - Fanny Bonachera
- Laboratoire
de Chémoinformatique UMR 7140 CNRS, Institut Le Bel 4, rue B. Pascal 67081 Strasbourg, France
| | - Alexandre Varnek
- Laboratoire
de Chémoinformatique UMR 7140 CNRS, Institut Le Bel 4, rue B. Pascal 67081 Strasbourg, France
| | - Jean-Marie Lehn
- Laboratoire
de Chimie Supramoléculaire, Institut de Science et d’Ingénierie
Supramoléculaires (ISIS), Université
de Strasbourg, 8 allée Gaspard Monge, 67000 Strasbourg, France
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27
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Bayer T, Pfaff L, Branson Y, Becker A, Wu S, Bornscheuer UT, Wei R. Biosensor and chemo-enzymatic one-pot cascade applications to detect and transform PET-derived terephthalic acid in living cells. iScience 2022; 25:104326. [PMID: 35602945 PMCID: PMC9117539 DOI: 10.1016/j.isci.2022.104326] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2021] [Revised: 04/04/2022] [Accepted: 04/26/2022] [Indexed: 01/14/2023] Open
Abstract
Plastic waste imposes a serious problem to the environment and society. Hence, strategies for a circular plastic economy are demanded. One strategy is the engineering of polyester hydrolases toward higher activity for the biotechnological recycling of polyethylene terephthalate (PET). To provide tools for the rapid characterization of PET hydrolases and the detection of degradation products like terephthalic acid (TPA), we coupled a carboxylic acid reductase (CAR) and the luciferase LuxAB. CAR converted TPA into the corresponding aldehydes in Escherichia coli, which yielded bioluminescence that not only semiquantitatively reflected amounts of TPA in hydrolysis samples but is suitable as a high-throughput screening assay to assess PET hydrolase activity. Furthermore, the CAR-catalyzed synthesis of terephthalaldehyde was combined with a reductive amination cascade in a one-pot setup yielding the corresponding diamine, suggesting a new strategy for the transformation of TPA as a product obtained from PET biodegradation. First bioreduction of terephthalic acid (TPA) by a carboxylic acid reductase in vivo Real-time, high-throughput detection of TPA-derived aldehydes by luciferase LuxAB Bioluminescence reflects TPA amounts, assessing (engineered) PET hydrolase activity Transformation of TPA into the diamine through chemo-enzymatic one-pot cascade
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Affiliation(s)
- Thomas Bayer
- Institute of Biochemistry, Department of Biotechnology & Enzyme Catalysis, University of Greifswald, Felix-Hausdorff-Straße 4, 17487 Greifswald, Germany
- Institute of Molecular Biotechnology, TU Graz, Petersgasse 14, 8010 Graz, Austria
- Corresponding author
| | - Lara Pfaff
- Institute of Biochemistry, Department of Biotechnology & Enzyme Catalysis, University of Greifswald, Felix-Hausdorff-Straße 4, 17487 Greifswald, Germany
| | - Yannick Branson
- Institute of Biochemistry, Department of Biotechnology & Enzyme Catalysis, University of Greifswald, Felix-Hausdorff-Straße 4, 17487 Greifswald, Germany
| | - Aileen Becker
- Institute of Biochemistry, Department of Biotechnology & Enzyme Catalysis, University of Greifswald, Felix-Hausdorff-Straße 4, 17487 Greifswald, Germany
| | - Shuke Wu
- Institute of Biochemistry, Department of Biotechnology & Enzyme Catalysis, University of Greifswald, Felix-Hausdorff-Straße 4, 17487 Greifswald, Germany
- College of Life Science & Technology, Huazhong Agricultural University, Shizishan Street 1, Wuhan 430070, China
| | - Uwe T. Bornscheuer
- Institute of Biochemistry, Department of Biotechnology & Enzyme Catalysis, University of Greifswald, Felix-Hausdorff-Straße 4, 17487 Greifswald, Germany
| | - Ren Wei
- Institute of Biochemistry, Department of Biotechnology & Enzyme Catalysis, University of Greifswald, Felix-Hausdorff-Straße 4, 17487 Greifswald, Germany
- Corresponding author
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Cao M, Zhao P, Liu C, Xia J, Xu H. When Dynamic Diselenide Bonds meet Dynamic Imine Bonds in Polymeric Materials. Macromol Rapid Commun 2022; 43:e2200083. [PMID: 35257443 DOI: 10.1002/marc.202200083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 02/27/2022] [Indexed: 11/09/2022]
Abstract
In both natural and artificial functional systems, the cooperation between different dynamic interactions is of vital importance for realizing complicated functions. Dynamic covalent bonds are one kind of relatively stable dynamic interactions, and have shown synergistic effect in natural systems such as functional proteins. However, synergistic interactions between different dynamic covalent bonds in polymeric materials are still unclear. Herein, polymeric materials containing diselenide and imine bonds are prepared, and then the synergistic effect between the two dynamic covalent bonds is quantitatively evaluated in typical processes of dynamic materials. The results reveal that dynamic covalent bonds show weak synergistic effect in the degradation process, and have strong synergistic effect in stress relaxation process. Therefore, introducing multiple dynamic covalent bonds in polymeric materials could extensively enhance their dynamic properties. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Muqing Cao
- Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing, 100084, People's Republic of China
| | - Peng Zhao
- Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing, 100084, People's Republic of China
| | - Cheng Liu
- Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing, 100084, People's Republic of China
| | - Jiahao Xia
- Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing, 100084, People's Republic of China
| | - Huaping Xu
- Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing, 100084, People's Republic of China
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29
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Liu G, Tan J, Cen J, Zhang G, Hu J, Liu S. Oscillating the local milieu of polymersome interiors via single input-regulated bilayer crosslinking and permeability tuning. Nat Commun 2022; 13:585. [PMID: 35102153 PMCID: PMC8803951 DOI: 10.1038/s41467-022-28227-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Accepted: 12/31/2021] [Indexed: 11/09/2022] Open
Abstract
The unique permselectivity of cellular membranes is of crucial importance to maintain intracellular homeostasis while adapting to microenvironmental changes. Although liposomes and polymersomes have been widely engineered to mimic microstructures and functions of cells, it still remains a considerable challenge to synergize the stability and permeability of artificial cells and to imitate local milieu fluctuations. Herein, we report concurrent crosslinking and permeabilizing of pH-responsive polymersomes containing Schiff base moieties within bilayer membranes via enzyme-catalyzed acid production. Notably, this synergistic crosslinking and permeabilizing strategy allows tuning of the mesh sizes of the crosslinked bilayers with subnanometer precision, showing discriminative permeability toward maltooligosaccharides with molecular sizes of ~1.4-2.6 nm. The permselectivity of bilayer membranes enables intravesicular pH oscillation, fueled by a single input of glucose. This intravesicular pH oscillation can further drive the dissipative self-assembly of pH-sensitive dipeptides. Moreover, the permeabilization of polymersomes can be regulated by intracellular pH gradient as well, enabling the controlled release of encapsulated payloads.
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Affiliation(s)
- Guhuan Liu
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, School of Chemistry and Materials Science, University of Science and Technology of China, 230026, Hefei, Anhui, China
| | - Jiajia Tan
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, School of Chemistry and Materials Science, University of Science and Technology of China, 230026, Hefei, Anhui, China
| | - Jie Cen
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, School of Chemistry and Materials Science, University of Science and Technology of China, 230026, Hefei, Anhui, China
| | - Guoying Zhang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, School of Chemistry and Materials Science, University of Science and Technology of China, 230026, Hefei, Anhui, China
| | - Jinming Hu
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, School of Chemistry and Materials Science, University of Science and Technology of China, 230026, Hefei, Anhui, China.
| | - Shiyong Liu
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, School of Chemistry and Materials Science, University of Science and Technology of China, 230026, Hefei, Anhui, China.
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30
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Liguori A, Hakkarainen M. Designed from Biobased for Recycling: Imine-Based Covalent Adaptable Networks. Macromol Rapid Commun 2022; 43:e2100816. [PMID: 35080074 DOI: 10.1002/marc.202100816] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Revised: 01/06/2022] [Indexed: 11/05/2022]
Abstract
Turning thermosets into fully sustainable materials requires utilization of biobased raw materials and design for easy recyclability. Here, dynamic covalent chemistry for fabrication of covalent adaptable networks (CANs) could be an enabling tool. CAN thermosets ideally combine the positive material properties of thermosets with thermal recyclability of linear thermoplastics. Among the dynamic covalent bonds, imine bond, also called Schiff base, can participate in both dissociative and associative pathways. This induces potential for chemical recyclability, thermal reprocessability and self-healing. This review presents an overview of the current research front of biobased thermosets fabricated by Schiff base chemistry. The discussed materials are categorized on the basis of the employed biobased components. The chemical approaches for the synthesis and curing of the resins, as well as the resulting properties and recyclability of the obtained thermosets are described and discussed. Finally, challenges and future perspectives are briefly summarized. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Anna Liguori
- KTH Royal Institute of Technology, Department of Fibre and Polymer Technology, Teknikringen 58, Stockholm, 100 44, Sweden
| | - Minna Hakkarainen
- KTH Royal Institute of Technology, Department of Fibre and Polymer Technology, Teknikringen 58, Stockholm, 100 44, Sweden
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31
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Du Y, Zhang Y, Huang M, Wang S, Wang J, Liao K, Wu X, Zhou Q, Zhang X, Wu YD, Peng T. Systematic investigation of the aza-Cope reaction for fluorescence imaging of formaldehyde in vitro and in vivo. Chem Sci 2021; 12:13857-13869. [PMID: 34760171 PMCID: PMC8549814 DOI: 10.1039/d1sc04387k] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Accepted: 09/22/2021] [Indexed: 01/02/2023] Open
Abstract
Increasing evidence has highlighted the endogenous production of formaldehyde (FA) in a variety of fundamental biological processes and its involvement in many disease conditions ranging from cancer to neurodegeneration. To examine the physiological and pathological relevance and functions of FA, fluorescent probes for FA imaging in live biological samples are of great significance. Herein we report a systematic investigation of 2-aza-Cope reactions between homoallylamines and FA for identification of a highly efficient 2-aza-Cope reaction moiety and development of fluorescent probes for imaging FA in living systems. By screening a set of N-substituted homoallylamines and comparing them to previously reported homoallylamine structures for reaction with FA, we found that N-p-methoxybenzyl homoallylamine exhibited an optimal 2-aza-Cope reactivity to FA. Theoretical calculations were then performed to demonstrate that the N-substituent on homoallylamine greatly affects the condensation with FA, which is more likely the rate-determining step. Moreover, the newly identified optimal N-p-methoxybenzyl homoallylamine moiety with a self-immolative β-elimination linker was generally utilized to construct a series of fluorescent probes with varying excitation/emission wavelengths for sensitive and selective detection of FA in aqueous solutions and live cells. Among these probes, the near-infrared probe FFP706 has been well demonstrated to enable direct fluorescence visualization of steady-state endogenous FA in live mouse brain tissues and elevated FA levels in a mouse model of breast cancer. This study provides the optimal aza-Cope reaction moiety for FA probe development and new chemical tools for fluorescence imaging and biological investigation of FA in living systems.
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Affiliation(s)
- Yimeng Du
- State Key Laboratory of Chemical Oncogenomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School Shenzhen 518055 China
| | - Yuqing Zhang
- State Key Laboratory of Chemical Oncogenomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School Shenzhen 518055 China
| | - Meirong Huang
- State Key Laboratory of Chemical Oncogenomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School Shenzhen 518055 China
| | - Shushu Wang
- State Key Laboratory of Chemical Oncogenomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School Shenzhen 518055 China
| | - Jianzheng Wang
- State Key Laboratory of Chemical Oncogenomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School Shenzhen 518055 China
| | - Kongke Liao
- State Key Laboratory of Chemical Oncogenomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School Shenzhen 518055 China
| | - Xiaojun Wu
- State Key Laboratory of Chemical Oncogenomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School Shenzhen 518055 China
| | - Qiang Zhou
- State Key Laboratory of Chemical Oncogenomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School Shenzhen 518055 China
| | - Xinhao Zhang
- State Key Laboratory of Chemical Oncogenomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School Shenzhen 518055 China
- Shenzhen Bay Laboratory Shenzhen 518132 China
| | - Yun-Dong Wu
- State Key Laboratory of Chemical Oncogenomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School Shenzhen 518055 China
- Shenzhen Bay Laboratory Shenzhen 518132 China
| | - Tao Peng
- State Key Laboratory of Chemical Oncogenomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School Shenzhen 518055 China
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Chen Y, Lei Y, Tong L, Li H. Stabilization of Dynamic Covalent Architectures by Multivalence. Chemistry 2021; 28:e202102910. [PMID: 34591343 DOI: 10.1002/chem.202102910] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Indexed: 01/09/2023]
Abstract
The formation of imine bond is reversible. This feature has been taken advantage of by chemists for accomplishing high yielding self-assembly. On the other hand, it also jeopardizes the intrinsic stability of these self-assembled products. However, some recent discoveries demonstrate that some of these imine bond containing molecules could be rather stable or kinetically inert. A deep investigation indicated that such enhanced stability results from, at least partially, multivalence. Such results also inspire chemists to use imine condensation for self-assembly in water, a solvent that is considered not compatible with imine bond for a long time.
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Affiliation(s)
- Yixin Chen
- Department of Chemistry, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Ye Lei
- Department of Chemistry, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Lu Tong
- Department of Chemistry, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Hao Li
- Department of Chemistry, Zhejiang University, Hangzhou, 310027, P. R. China.,ZJU-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou, 311215, P. R. China
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Lee JW, Park J, Lee J, Park S, Kim JG, Kim BS. Solvent-Free Mechanochemical Post-Polymerization Modification of Ionic Polymers. CHEMSUSCHEM 2021; 14:3801-3805. [PMID: 34245491 DOI: 10.1002/cssc.202101131] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 07/04/2021] [Indexed: 06/13/2023]
Abstract
Despite their superior stability and facile handling, ionic polymers have limited solubility in most organic solvents, restricting the range of substrates and reaction conditions to which they can be applied. To overcome this solubility issue, the present study presents a solvent-free mechanochemical reaction. Specifically, a post-polymerization modification of ammonium-functionalized polyether was demonstrated using a solvent-free vibrational ball-milling technique. The formation of imine bonds between the ionic polymer and an aromatic aldehyde led to the complete conversion to imine within 1 h without any bond breakage on the polymer backbone. The viability of this approach for a wide range of aldehydes was also evaluated, highlighting the potential of the mechanochemical post-polymerization modification of polymers that are inaccessible by conventional solution approaches.
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Affiliation(s)
- Joo Won Lee
- Department of Chemistry, Yonsei University, Seoul, 03722, Republic of Korea
| | - Jihye Park
- Department of Chemistry, Yonsei University, Seoul, 03722, Republic of Korea
| | - Joonhee Lee
- Department of Chemistry, Yonsei University, Seoul, 03722, Republic of Korea
| | - Sora Park
- Department of Chemistry, Research Institute of Physics and Chemistry, Jeonbuk National University, Jeonju, 54896, Republic of Korea
| | - Jeung Gon Kim
- Department of Chemistry, Research Institute of Physics and Chemistry, Jeonbuk National University, Jeonju, 54896, Republic of Korea
| | - Byeong-Su Kim
- Department of Chemistry, Yonsei University, Seoul, 03722, Republic of Korea
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34
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Rational design of dynamic imine surfactants for oil-water emulsions: Learning from oil-induced reversible dynamic imine bond formation. J Colloid Interface Sci 2021; 607:163-170. [PMID: 34506998 DOI: 10.1016/j.jcis.2021.08.178] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 08/24/2021] [Accepted: 08/25/2021] [Indexed: 12/18/2022]
Abstract
HYPOTHESIS Dynamic imine surfactants (DIS) can be constructed by the formation of dynamic imine bonds (Dibs) between aromatic aldehydes and aliphatic amines in water. Because of the nature of Dibs in water, a thermodynamic equilibrium state was achieved between the DIS and aldehyde and amine precursors to form a dynamic combinatorial library (DCL). When the DIS served as sole emulsifier to form oil-H2O emulsions, the precursors migrated between the H2O phase and the oil phase, which altered the DCL equilibrium. The DIS concentration and emulsion stability also changed. EXPERIMENTS By mixing 4-(2-sulfobetaine-ethoxy)-benzaldehyde (SBBA) and aliphatic amines of CnH2n+1NH2 (n = 4, BA; n = 6, HA; n = 8, OA; n = 10, DA) in water, four amphoteric DIS (SBBA-BA/HA/OA/DA) were prepared. Dib formation was characterized using 1H NMR. The DIS surface activity was studied by surface tension and fluorescence probe methods. The reversible switching of DIS and its wormlike micelles were explored. FINDINGS SBBA-OA (or SBBA-DA) DIS was not a suitable emulsifier for stable hydrocarbon (HC)-H2O emulsions. OA and DA were more soluble in the HC phase than the H2O phase. The precursors of OA and DA migrated from the H2O to the HC phase, and the thermodynamic equilibrium state of DCL shifted towards Dib dissociation. The Dib could be regenerated by HC phase removal. A novel strategy where volatile HC (such as pentane) was used as a trigger was developed to switch the DIS reversibly and its self-assemblies (such as wormlike micelles) in water without inorganic salt accumulation. The SBBA-HA (or SBBA-BA) DIS was a suitable emulsifier for stable emulsions because HA and BA were more soluble in the H2O phase.
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35
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Wang YL, Han L, Zhang XL, Cao L, Hu K, Li LH, Wei Y. 3D bioprinting of an electroactive and self-healing polysaccharide hydrogels. J Tissue Eng Regen Med 2021; 16:76-85. [PMID: 34414667 DOI: 10.1002/term.3238] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Revised: 06/08/2021] [Accepted: 07/03/2021] [Indexed: 11/06/2022]
Abstract
Polysaccharide hydrogels including alginate, agarose, hyaluronic acid and chitosan have been widely used as scaffolds in 3D bio-printing field. Konjac glucomannan (KGM) exhibits excellent properties of water solubility, biocompatibility and biodegradability. Herein composite hydrogels were prepared via schiff-base reaction between the aldehyde group of oxidized konjac glucomannan (OKGM) and the amino group of branched polyethyleneimine (PEI). The OKGM/PEI composite hydrogel displayed self-healing ability and pH sensitivity and showed shear thinning capability, which is suitable for 3D bio-printing technology. Furthermore, the OKGM/PEI electroactive composite hydrogel was obtained by adding carbon nanotubes (CNTs). Then the rheological behavior and morphology of OKGM/PEI electroactive hydrogels were thoroughly characterized. The conductivities of OKGM/PEI electroactive composite hydrogels increased with increasing the content of carbon nanotubes. The rheological behavior and 3D bio-printability of OKGM/PEI electroactive hydrogels were also tested. It was found that carbon nanotubes can also improve the bio-printability of OKGM/PEI electroactive hydrogels. Thus, the OKGM/PEI electroactive hydrogels could be employed as scaffolds for muscle and cardiac nerve tissue regeneration. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Yu-Long Wang
- The Engineering Research Center of 3D Printing and Bio-fabrication, Beijing Institute of Graphic Communication, Beijing, 102600, China
| | - Lu Han
- The Engineering Research Center of 3D Printing and Bio-fabrication, Beijing Institute of Graphic Communication, Beijing, 102600, China
| | - Xin-Lin Zhang
- The Engineering Research Center of 3D Printing and Bio-fabrication, Beijing Institute of Graphic Communication, Beijing, 102600, China
| | - Long Cao
- The Engineering Research Center of 3D Printing and Bio-fabrication, Beijing Institute of Graphic Communication, Beijing, 102600, China
| | - Kun Hu
- The Engineering Research Center of 3D Printing and Bio-fabrication, Beijing Institute of Graphic Communication, Beijing, 102600, China
| | - Lu-Hai Li
- The Engineering Research Center of 3D Printing and Bio-fabrication, Beijing Institute of Graphic Communication, Beijing, 102600, China
| | - Yen Wei
- Department of Chemistry and Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Tsinghua University, Beijing, 100084, China
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36
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Wu M, Peng QY, Han LB, Zeng HB. Self-healing Hydrogels and Underlying Reversible Intermolecular Interactions. CHINESE JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1007/s10118-021-2631-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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37
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Douglas CD, Grandinetti L, Easton NM, Kuehm OP, Hayden JA, Hamilton MC, St Maurice M, Bearne SL. Slow-Onset, Potent Inhibition of Mandelate Racemase by 2-Formylphenylboronic Acid. An Unexpected Adduct Clasps the Catalytic Machinery. Biochemistry 2021; 60:2508-2518. [PMID: 34339165 DOI: 10.1021/acs.biochem.1c00374] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
o-Carbonyl arylboronic acids such as 2-formylphenylboronic acid (2-FPBA) are employed in biocompatible conjugation reactions with the resulting iminoboronate adduct stabilized by an intramolecular N-B interaction. However, few studies have utilized these reagents as active site-directed enzyme inhibitors. We show that 2-FPBA is a potent reversible, slow-onset inhibitor of mandelate racemase (MR), an enzyme that has served as a valuable paradigm for understanding enzyme-catalyzed abstraction of an α-proton from a carbon acid substrate with a high pKa. Kinetic analysis of the progress curves for the slow onset of inhibition of wild-type MR using a two-step kinetic mechanism gave Ki and Ki* values of 5.1 ± 1.8 and 0.26 ± 0.08 μM, respectively. Hence, wild-type MR binds 2-FPBA with an affinity that exceeds that for the substrate by ∼3000-fold. K164R MR was inhibited by 2-FPBA, while K166R MR was not inhibited, indicating that Lys 166 was essential for inhibition. Unexpectedly, mass spectrometric analysis of the NaCNBH3-treated enzyme-inhibitor complex did not yield evidence of an iminoboronate adduct. 11B nuclear magnetic resonance spectroscopy of the MR·2-FPBA complex indicated that the boron atom was sp3-hybridized (δ 6.0), consistent with dative bond formation. Surprisingly, X-ray crystallography revealed the formation of an Nζ-B dative bond between Lys 166 and 2-FPBA with intramolecular cyclization to form a benzoxaborole, rather than the expected iminoboronate. Thus, when o-carbonyl arylboronic acid reagents are employed to modify proteins, the structure of the resulting product depends on the protein architecture at the site of modification.
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Affiliation(s)
- Colin D Douglas
- Department of Biochemistry and Molecular Biology, Dalhousie University, Halifax, NS B3H 4R2, Canada
| | - Lia Grandinetti
- Department of Biological Sciences, Marquette University, Milwaukee, Wisconsin 53201-1881, United States
| | - Nicole M Easton
- Department of Biochemistry and Molecular Biology, Dalhousie University, Halifax, NS B3H 4R2, Canada
| | - Oliver P Kuehm
- Department of Biochemistry and Molecular Biology, Dalhousie University, Halifax, NS B3H 4R2, Canada
| | - Joshua A Hayden
- Department of Biochemistry and Molecular Biology, Dalhousie University, Halifax, NS B3H 4R2, Canada
| | - Meghan C Hamilton
- Department of Biochemistry and Molecular Biology, Dalhousie University, Halifax, NS B3H 4R2, Canada
| | - Martin St Maurice
- Department of Biological Sciences, Marquette University, Milwaukee, Wisconsin 53201-1881, United States
| | - Stephen L Bearne
- Department of Biochemistry and Molecular Biology, Dalhousie University, Halifax, NS B3H 4R2, Canada
- Department of Chemistry, Dalhousie University, Halifax, NS B3H 4R2, Canada
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38
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Lutz E, Moulin E, Tchakalova V, Benczédi D, Herrmann A, Giuseppone N. Design of Stimuli-Responsive Dynamic Covalent Delivery Systems for Volatile Compounds (Part 1): Controlled Hydrolysis of Micellar Amphiphilic Imines in Water. Chemistry 2021; 27:13457-13467. [PMID: 34270124 DOI: 10.1002/chem.202102049] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Indexed: 12/29/2022]
Abstract
Despite their intrinsic hydrolysable character, imine bonds can become remarkably stable in water when self-assembled in amphiphilic micellar structures. In this work, we systematically studied some of these structures and the influence of various parameters that can be used to take control of their hydrolysis, including pH, concentration, the position of the imine function in the amphiphilic structure, relative lengths of the linked hydrophilic and hydrophobic moieties. Thermodynamic and kinetic data led us to the rational design of stable imines in water, partly based on the location of the imine function within the hydrophobic part of the amphiphile and on a predictable quantitative term that we define as the total hydrophilic-lipophilic balance (HLB). In addition, we show that such stable systems are also stimuli-responsive and therefore, of potential interest in trapping and releasing micellar components on demand.
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Affiliation(s)
- Eric Lutz
- SAMS Research Group, Institut Charles Sadron, CNRS, University of Strasbourg, 23 rue du Loess, BP 84047, 67034, Strasbourg Cedex 2, France
| | - Emilie Moulin
- SAMS Research Group, Institut Charles Sadron, CNRS, University of Strasbourg, 23 rue du Loess, BP 84047, 67034, Strasbourg Cedex 2, France
| | - Vera Tchakalova
- Firmenich SA, Corporate R&D Division, Rue de la Bergère 7, 1242, Satigny, Switzerland
| | - Daniel Benczédi
- Firmenich SA, Corporate R&D Division, Rue de la Bergère 7, 1242, Satigny, Switzerland
| | - Andreas Herrmann
- Firmenich SA, Corporate R&D Division, Rue de la Bergère 7, 1242, Satigny, Switzerland
| | - Nicolas Giuseppone
- SAMS Research Group, Institut Charles Sadron, CNRS, University of Strasbourg, 23 rue du Loess, BP 84047, 67034, Strasbourg Cedex 2, France
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39
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Zhuo Y, Wang X, Chen S, Chen H, Ouyang J, Yang L, Wang X, You L, Utz M, Tian Z, Cao X. Quantification and Prediction of Imine Formation Kinetics in Aqueous Solution by Microfluidic NMR Spectroscopy. Chemistry 2021; 27:9508-9513. [PMID: 33899293 DOI: 10.1002/chem.202100874] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Indexed: 12/14/2022]
Abstract
Quantitatively predicting the reactivity of dynamic covalent reaction is essential to understand and rationally design complex structures and reaction networks. Herein, the reactivity of aldehydes and amines in various rapid imine formation in aqueous solution by microfluidic NMR spectroscopy was quantified. Investigation of reaction kinetics allowed to quantify the forward rate constants k+ by an empirical equation, of which three independent parameters were introduced as reactivity parameters of aldehydes (SE , E) and amines (N). Furthermore, these reactivity parameters were successfully used to predict the unknown forward rate constants of imine formation. Finally, two competitive reaction networks were rationally designed based on the proposed reactivity parameters. Our work has demonstrated the capability of microfluidic NMR spectroscopy in quantifying the kinetics of label-free chemical reactions, especially rapid reactions that are complete in minutes.
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Affiliation(s)
- Youzhen Zhuo
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Key Laboratory of Chemical Biology of Fujian Province, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, P.R. China
| | - Xiuxiu Wang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Key Laboratory of Chemical Biology of Fujian Province, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, P.R. China
| | - Si Chen
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Key Laboratory of Chemical Biology of Fujian Province, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, P.R. China
| | - Hang Chen
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, P.R. China
| | - Jie Ouyang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Key Laboratory of Chemical Biology of Fujian Province, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, P.R. China
| | - Liulin Yang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Key Laboratory of Chemical Biology of Fujian Province, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, P.R. China
| | - Xinchang Wang
- School of Electronic Science and Engineering, Xiamen University, Xiamen, 361005, P.R. China
| | - Lei You
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, P.R. China
| | - Marcel Utz
- School of Chemistry, University of Southampton, Southampton, Hampshire, SO17 1BJ, UK
| | - Zhongqun Tian
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Key Laboratory of Chemical Biology of Fujian Province, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, P.R. China
| | - Xiaoyu Cao
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Key Laboratory of Chemical Biology of Fujian Province, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, P.R. China
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40
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Aydın F, Arslan NB. Synthesis, spectral properties, crystal structure and theoretical calculations of a new geminal diamine: 2,2,2-Trichloro-N,N׳-bis(2-nitrophenyl)-ethane-1,1-diamine. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.129976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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41
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Ji C, Wang G, Wang H. Progress in Metal-Organic Supramolecular System Based on Subcomponent Self-Assembly. CHINESE J ORG CHEM 2021. [DOI: 10.6023/cjoc202012030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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42
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Baş SD, Gürkan R. Selective extraction and enrichment of 5-hydroymethylfurfural from honey, molasses, jam and vinegar samples prior to sensitive determination by micro-volume UV-vis spectrophotometry. J Food Compost Anal 2021. [DOI: 10.1016/j.jfca.2020.103664] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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43
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Fan Q, Zhu L, Li X, Ren H, Zhu H, Wu G, Ding J. Visible-light photocatalytic selective oxidation of amine and sulfide with CsPbBr 3 as photocatalyst. NEW J CHEM 2021. [DOI: 10.1039/d1nj02595c] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Using CsPbBr3 as a visible-light catalyst, a facile protocol for photocatalytic oxidation of amines and sulfides is reported, generating aldehydes, imines and sulfoxide with excellent yields and selectivity.
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Affiliation(s)
- Qiangwen Fan
- State Key Laboratory of Nuclear Resources and Environment
- School of Chemistry, Biology and Materials Science
- East China University of Technology
- Nanchang
- China
| | - Longwei Zhu
- State Key Laboratory of Nuclear Resources and Environment
- School of Chemistry, Biology and Materials Science
- East China University of Technology
- Nanchang
- China
| | - Xuhuai Li
- State Key Laboratory of Nuclear Resources and Environment
- School of Chemistry, Biology and Materials Science
- East China University of Technology
- Nanchang
- China
| | - Huijun Ren
- State Key Laboratory of Nuclear Resources and Environment
- School of Chemistry, Biology and Materials Science
- East China University of Technology
- Nanchang
- China
| | - Haibo Zhu
- Jiangxi Province Key Laboratory of Synthetic Chemistry
- School of Chemistry, Biology and Materials Science
- East China University of Technology
- Nanchang
- China
| | - Guorong Wu
- Jiangxi Province Key Laboratory of Polymer Micro/Nano Manufacturing and Devices
- East China University of Technology
- Nanchang
- China
| | - Jianhua Ding
- Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation
- East China University of Technology
- Nanchang
- China
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44
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Krishnamoorthy S, Grubbs RH. Aldehyde-Functionalized Magnetic Particles to Capture Off-Target Chemotherapeutic Agents. ACS OMEGA 2020; 5:29121-29126. [PMID: 33225143 PMCID: PMC7675571 DOI: 10.1021/acsomega.0c03840] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Accepted: 10/19/2020] [Indexed: 05/07/2023]
Abstract
Drug capture is a promising technique to prevent off-target chemotherapeutic agents from reaching systemic circulation and causing severe side effects. The current work examines the viability of using immobilized aldehydes for drug-capture applications via Schiff base formation between doxorubicin (DOX) and aldehydes. Commercially available pyridoxal-5'-phosphate (VB6) was immobilized on iron oxide nanoparticles (IONPs) to capture DOX from human serum. Leaching of VB6 persisted as a primary issue and thus various aldehydes with anchoring groups such as catechol, silatrane, and phosphonate esters have been studied. The phosphonate group-based anchor was the most stable and used for further capture studies. To improve the hydrophilic nature of the aldehydes, sulfonate-containing aldehydes and polyethylene glycols (PEGs) were investigated. Finally, the optimized functionalized iron oxide particles, PEGylated-IONP, were used to demonstrate doxorubicin capture from human serum at biologically relevant temperature (37 °C), time (30 min), and concentrations (μM). The current study sets the stage for the development of potential compact dimension capture device based on surface-anchorable polymers with aldehyde groups.
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Affiliation(s)
- Sankarganesh Krishnamoorthy
- Division of Chemistry and Chemical
Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Robert H. Grubbs
- Division of Chemistry and Chemical
Engineering, California Institute of Technology, Pasadena, California 91125, United States
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45
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Umuhire Juru A, Cai Z, Jan A, Hargrove AE. Template-guided selection of RNA ligands using imine-based dynamic combinatorial chemistry. Chem Commun (Camb) 2020; 56:3555-3558. [PMID: 32104839 DOI: 10.1039/d0cc00266f] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
This study establishes the applicability of imine-based dynamic combinatorial chemistry to discover non-covalent ligands for RNA targets. We elucidate properties underlying the reactivity of arylamines and demonstrate target-guided amplification of tight binders in an amiloride-based dynamic library.
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Affiliation(s)
- Aline Umuhire Juru
- Department of Chemistry, Duke University, 124 Science Drive, Durham, NC 27705, USA.
| | - Zhengguo Cai
- Department of Chemistry, Duke University, 124 Science Drive, Durham, NC 27705, USA.
| | - Adina Jan
- Department of Chemistry, Duke University, 124 Science Drive, Durham, NC 27705, USA.
| | - Amanda E Hargrove
- Department of Chemistry, Duke University, 124 Science Drive, Durham, NC 27705, USA.
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46
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Abstract
![]()
Genetic biopolymers utilize defined
sequences and monomer-specific
molecular recognition to store and transfer information. Synthetic
polymers that mimic these attributes using reversible covalent chemistry
for base-pairing pose unique synthetic challenges. Here, we describe
a solid-phase synthesis methodology for the efficient construction
of ethynyl benzene oligomers with specific sequences of aniline and
benzaldehyde subunits. Handling these oligomers is complicated by
the fact that they often exhibit multiple conformations because of
intra- or intermolecular pairing. We describe conditions that allow
the dynamic behavior of these oligomers to be controlled so that they
may be manipulated and characterized without needing to mask the recognition
units with protecting groups.
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Affiliation(s)
- Kyle R. Strom
- Howard Hughes Medical Institute, Department of Molecular Biology and Center for Computational and Integrative Biology, Massachusetts General Hospital, 185 Cambridge Street, Boston, Massachusetts 02114, United States
- Department of Genetics, Harvard Medical School, 77 Avenue Louis Pasteur, Boston, Massachusetts 02115, United States
| | - Jack W. Szostak
- Howard Hughes Medical Institute, Department of Molecular Biology and Center for Computational and Integrative Biology, Massachusetts General Hospital, 185 Cambridge Street, Boston, Massachusetts 02114, United States
- Department of Genetics, Harvard Medical School, 77 Avenue Louis Pasteur, Boston, Massachusetts 02115, United States
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, United States
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47
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Shi S, Yao C, Cen J, Li L, Liu G, Hu J, Liu S. High-Fidelity End-Functionalization of Poly(ethylene glycol) Using Stable and Potent Carbamate Linkages. Angew Chem Int Ed Engl 2020; 59:18172-18178. [PMID: 32643249 DOI: 10.1002/anie.202006687] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 07/05/2020] [Indexed: 01/16/2023]
Abstract
Commercial PEG-amine is of unreliable quality, and conventional PEG functionalization relies on esterification and etherification steps, suffering from incomplete conversion, harsh reaction conditions, and functional-group incompatibility. To solve these challenges, we propose an efficient strategy for PEG functionalization with carbamate linkages. By fine-tuning terminal amine basicity, stable and high-fidelity PEG-amine with carbamate linkage was obtained, as seen from the clean MALDI-TOF MS pattern. The carbamate strategy was further applied to the synthesis of high-fidelity multi-functionalized PEG with varying reactive groups. Compared to with an ester linkage, amphiphilic PEG-PS block copolymers bearing carbamate junction linkage exhibits preferential self-assembly tendency into vesicles. Moreover, nanoparticles of the latter demonstrate higher drug loading efficiency, encapsulation stability against enzymatic hydrolysis, and improved in vivo retention at the tumor region.
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Affiliation(s)
- Shengyu Shi
- CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Department of Polymer Science and Engineering, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui Province, 230026, China
| | - Chenzhi Yao
- CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Department of Polymer Science and Engineering, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui Province, 230026, China
| | - Jie Cen
- CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Department of Polymer Science and Engineering, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui Province, 230026, China
| | - Lei Li
- CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Department of Polymer Science and Engineering, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui Province, 230026, China
| | - Guhuan Liu
- CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Department of Polymer Science and Engineering, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui Province, 230026, China
| | - Jinming Hu
- CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Department of Polymer Science and Engineering, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui Province, 230026, China
| | - Shiyong Liu
- CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Department of Polymer Science and Engineering, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui Province, 230026, China
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48
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Shi S, Yao C, Cen J, Li L, Liu G, Hu J, Liu S. High‐Fidelity End‐Functionalization of Poly(ethylene glycol) Using Stable and Potent Carbamate Linkages. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202006687] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Shengyu Shi
- CAS Key Laboratory of Soft Matter Chemistry Hefei National Laboratory for Physical Sciences at the Microscale Department of Polymer Science and Engineering University of Science and Technology of China 96 Jinzhai Road Hefei Anhui Province 230026 China
| | - Chenzhi Yao
- CAS Key Laboratory of Soft Matter Chemistry Hefei National Laboratory for Physical Sciences at the Microscale Department of Polymer Science and Engineering University of Science and Technology of China 96 Jinzhai Road Hefei Anhui Province 230026 China
| | - Jie Cen
- CAS Key Laboratory of Soft Matter Chemistry Hefei National Laboratory for Physical Sciences at the Microscale Department of Polymer Science and Engineering University of Science and Technology of China 96 Jinzhai Road Hefei Anhui Province 230026 China
| | - Lei Li
- CAS Key Laboratory of Soft Matter Chemistry Hefei National Laboratory for Physical Sciences at the Microscale Department of Polymer Science and Engineering University of Science and Technology of China 96 Jinzhai Road Hefei Anhui Province 230026 China
| | - Guhuan Liu
- CAS Key Laboratory of Soft Matter Chemistry Hefei National Laboratory for Physical Sciences at the Microscale Department of Polymer Science and Engineering University of Science and Technology of China 96 Jinzhai Road Hefei Anhui Province 230026 China
| | - Jinming Hu
- CAS Key Laboratory of Soft Matter Chemistry Hefei National Laboratory for Physical Sciences at the Microscale Department of Polymer Science and Engineering University of Science and Technology of China 96 Jinzhai Road Hefei Anhui Province 230026 China
| | - Shiyong Liu
- CAS Key Laboratory of Soft Matter Chemistry Hefei National Laboratory for Physical Sciences at the Microscale Department of Polymer Science and Engineering University of Science and Technology of China 96 Jinzhai Road Hefei Anhui Province 230026 China
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49
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Guo LE, Tang YX, Zhang SY, Hong Y, Yan XS, Li Z, Jiang YB. Balancing interactions in proline-based receptors for chiral recognition of l-/d-DOPA. Org Biomol Chem 2020; 18:4590-4598. [PMID: 32497164 DOI: 10.1039/d0ob00493f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Proline based receptors (1-14) attached with phenylboronic acid and benzaldehyde binding groups at the N-/C- or C-/N-termini of the proline residue were created for chiral recognition of l-/d-DOPA, in an attempt to examine if balancing the two binding events would influence the recognition. By changing the positions of boronic acid and aldehyde groups substituted on the phenyl rings (1-4, 5-8) and the site at which phenylboronic acid and benzaldehyde moieties attached respectively to the N- and C-termini or C- and N-termini of the proline residue (1-4vs.5-8), and by introducing an electron-withdrawing fluorine atom in the phenyl ring of the weaker binder the benzaldehyde moiety (11vs.1, 14vs.5), we were able to show that a better balance of the two binding events does improve the chiral recognition. This finding can only be made with the current version of receptors that were equipped with two different binding groups. Together with the finding that the chiral recognition performance in mixed organic-aqueous solutions is tunable by varying the solvent composition, we have now arrived at a protocol for designing proline based receptors for extended applications in chiral recognition.
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Affiliation(s)
- Lin-E Guo
- Department of Chemistry, College of Chemistry and Chemical Engineering, The MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, and iChEM, Xiamen University, Xiamen 361005, China.
| | - Yu-Xin Tang
- Department of Chemistry, College of Chemistry and Chemical Engineering, The MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, and iChEM, Xiamen University, Xiamen 361005, China.
| | - Shu-Ying Zhang
- Department of Chemistry, College of Chemistry and Chemical Engineering, The MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, and iChEM, Xiamen University, Xiamen 361005, China.
| | - Yuan Hong
- Department of Chemistry, College of Chemistry and Chemical Engineering, The MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, and iChEM, Xiamen University, Xiamen 361005, China.
| | - Xiao-Sheng Yan
- Department of Chemistry, College of Chemistry and Chemical Engineering, The MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, and iChEM, Xiamen University, Xiamen 361005, China.
| | - Zhao Li
- Department of Chemistry, College of Chemistry and Chemical Engineering, The MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, and iChEM, Xiamen University, Xiamen 361005, China.
| | - Yun-Bao Jiang
- Department of Chemistry, College of Chemistry and Chemical Engineering, The MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, and iChEM, Xiamen University, Xiamen 361005, China.
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50
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Wu M, Chen J, Huang W, Yan B, Peng Q, Liu J, Chen L, Zeng H. Injectable and Self-Healing Nanocomposite Hydrogels with Ultrasensitive pH-Responsiveness and Tunable Mechanical Properties: Implications for Controlled Drug Delivery. Biomacromolecules 2020; 21:2409-2420. [DOI: 10.1021/acs.biomac.0c00347] [Citation(s) in RCA: 66] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Meng Wu
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
| | - Jingsi Chen
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
| | - Weijuan Huang
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta T6G 2P5, Canada
| | - Bin Yan
- College of Biomass Science and Engineering, Sichuan University, Chengdu, Sichuan, China
| | - Qiongyao Peng
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
| | - Jifang Liu
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
- The Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong 510700, China
| | - Lingyun Chen
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta T6G 2P5, Canada
| | - Hongbo Zeng
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
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