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Chen FY, Li CZ, Han H, Geng WC, Zhang SX, Jiang ZT, Zhao QY, Cai K, Guo DS. Expanding the Hydrophobic Cavity Surface of Azocalix[4]arene to Enable Biotin/Avidin Affinity with Controlled Release. Angew Chem Int Ed Engl 2024; 63:e202402139. [PMID: 38563765 DOI: 10.1002/anie.202402139] [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: 01/30/2024] [Revised: 03/29/2024] [Accepted: 04/02/2024] [Indexed: 04/04/2024]
Abstract
The development of artificial receptors that combine ultrahigh-affinity binding and controllable release for active guests holds significant importance in biomedical applications. On one hand, a complex with an exceedingly high binding affinity can resist unwanted dissociation induced by dilution effect and complex interferents within physiological environments. On the other hand, stimulus-responsive release of the guest is essential for precisely activating its function. In this context, we expanded hydrophobic cavity surface of a hypoxia-responsive azocalix[4]arene, affording Naph-SAC4A. This modification significantly enhanced its aqueous binding affinity to 1013 M-1, akin to the naturally occurring strongest recognition pair, biotin/(strept-)avidin. Consequently, Naph-SAC4A emerges as the first artificial receptor to simultaneously integrate ultrahigh recognition affinity and actively controllable release. The markedly enhanced affinity not only improved Naph-SAC4A's sensitivity in detecting rocuronium bromide in serum, but also refined the precision of hypoxia-responsive doxorubicin delivery at the cellular level, demonstrating its immense potential for diverse practical applications.
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Affiliation(s)
- Fang-Yuan Chen
- College of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Key Laboratory of Functional Polymer Materials (Ministry of Education), Frontiers Science Center for New Organic Matter, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, 300071, Tianjin, China
| | - Cheng-Zhi Li
- College of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Key Laboratory of Functional Polymer Materials (Ministry of Education), Frontiers Science Center for New Organic Matter, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, 300071, Tianjin, China
| | - Han Han
- Department of Chemistry, The University of Hong Kong, 999077, Hong Kong SAR, China
| | - Wen-Chao Geng
- College of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Key Laboratory of Functional Polymer Materials (Ministry of Education), Frontiers Science Center for New Organic Matter, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, 300071, Tianjin, China
| | - Shu-Xin Zhang
- College of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Key Laboratory of Functional Polymer Materials (Ministry of Education), Frontiers Science Center for New Organic Matter, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, 300071, Tianjin, China
| | - Ze-Tao Jiang
- College of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Key Laboratory of Functional Polymer Materials (Ministry of Education), Frontiers Science Center for New Organic Matter, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, 300071, Tianjin, China
| | - Qing-Yu Zhao
- College of Chemistry, Nankai University, 300071, Tianjin, China
| | - Kang Cai
- College of Chemistry, Nankai University, 300071, Tianjin, China
| | - Dong-Sheng Guo
- College of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Key Laboratory of Functional Polymer Materials (Ministry of Education), Frontiers Science Center for New Organic Matter, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, 300071, Tianjin, China
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2
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Cortón P, Fernández-Labandeira N, Díaz-Abellás M, Peinador C, Pazos E, Blanco-Gómez A, García MD. Aqueous Three-Component Self-Assembly of a Pseudo[1]rotaxane Using Hydrazone Bonds. J Org Chem 2023; 88:6784-6790. [PMID: 37114355 PMCID: PMC10731646 DOI: 10.1021/acs.joc.3c00108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Indexed: 04/29/2023]
Abstract
We present herein the synthesis of a new polycationic pseudo[1]rotaxane, self-assembled in excellent yield through hydrazone bonds in aqueous media of three different aldehyde and hydrazine building blocks. A thermodynamically controlled process has been studied sequentially by analyzing the [1 + 1] reaction of a bisaldehyde and a trishydrazine leading to the macrocyclic part of the system, the ability of this species to act as a molecular receptor, the conversion of a hydrazine-pending cyclophane into the pseudo[1]rotaxane and, lastly, the one-pot [1 + 1 + 1] condensation process. The latter was found to smoothly produce the target molecule through an integrative social self-sorting process, a species that was found to behave in water as a discrete self-inclusion complex below 2.5 mM concentration and to form supramolecular aggregates in the 2.5-70 mM range. Furthermore, we demonstrate how the abnormal kinetic stability of the hydrazone bonds on the macrocycle annulus can be advantageously used for the conversion of the obtained pseudo[1]rotaxane into other exo-functionalized macrocyclic species.
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Affiliation(s)
- Pablo Cortón
- CICA − Centro Interdisciplinar
de Química e Bioloxía and Departamento de Química,
Facultad de Ciencias, Universidade da Coruña, 15071 A Coruña, Spain
| | - Natalia Fernández-Labandeira
- CICA − Centro Interdisciplinar
de Química e Bioloxía and Departamento de Química,
Facultad de Ciencias, Universidade da Coruña, 15071 A Coruña, Spain
| | - Mauro Díaz-Abellás
- CICA − Centro Interdisciplinar
de Química e Bioloxía and Departamento de Química,
Facultad de Ciencias, Universidade da Coruña, 15071 A Coruña, Spain
| | - Carlos Peinador
- CICA − Centro Interdisciplinar
de Química e Bioloxía and Departamento de Química,
Facultad de Ciencias, Universidade da Coruña, 15071 A Coruña, Spain
| | - Elena Pazos
- CICA − Centro Interdisciplinar
de Química e Bioloxía and Departamento de Química,
Facultad de Ciencias, Universidade da Coruña, 15071 A Coruña, Spain
| | - Arturo Blanco-Gómez
- CICA − Centro Interdisciplinar
de Química e Bioloxía and Departamento de Química,
Facultad de Ciencias, Universidade da Coruña, 15071 A Coruña, Spain
| | - Marcos D. García
- CICA − Centro Interdisciplinar
de Química e Bioloxía and Departamento de Química,
Facultad de Ciencias, Universidade da Coruña, 15071 A Coruña, Spain
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3
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Webster CS, Balduzzi F, Davis AP. Tricyclic octaurea "Temples" for the recognition of polar molecules in water. Org Biomol Chem 2023; 21:525-532. [PMID: 36533594 DOI: 10.1039/d2ob02061k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Two water-soluble tricyclic "Temple" macrocycles featuring pyrene roof/floor units and bis-urea spacers have been synthesised and studied as receptors for aromatic compounds in aqueous media. The tricycles show good selectivity for methylated purine alkaloids such as caffeine versus unsubstituted heterocycles such as adenine and indole. Binding is signalled by major changes in fluorescence, apparently due to the break-up of intramolecular excimers. The formation of excimers implies cavity collapse in the absence of guests explaining why, unlike an earlier relative, these receptors do not bind carbohydrates. Naphthalenediimides (NDIs) have also been studied as geometrically complementary guests, and indeed bind especially strongly (Ka > 107 M-1); this powerful and selective association suggests potential applications in supramolecular self-assembly.
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Affiliation(s)
- Claire S Webster
- University of Bristol, School of Chemistry, Cantock's Close, Bristol, BS8 1TS, UK.
| | - Federica Balduzzi
- University of Bristol, School of Chemistry, Cantock's Close, Bristol, BS8 1TS, UK.
| | - Anthony P Davis
- University of Bristol, School of Chemistry, Cantock's Close, Bristol, BS8 1TS, UK.
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4
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Alshati F, Alahmed TAA, Sami F, Ali MS, Majeed S, Murtuja S, Hasnain MS, Ansari MT. Guest-host Relationship of Cyclodextrin and its Pharmacological Benefits. Curr Pharm Des 2023; 29:2853-2866. [PMID: 37946351 DOI: 10.2174/0113816128266398231027100119] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2023] [Accepted: 09/21/2023] [Indexed: 11/12/2023]
Abstract
Many methods, including solid dispersion, micellization, and inclusion complexes, have been employed to increase the solubility of potent drugs. Beta-cyclodextrin (βCD) is a cyclic oligosaccharide consisting of seven glucopyranoside molecules, and is a widely used polymer for formulating soluble inclusion complexes of hydrophobic drugs. The enzymatic activity of Glycosyltransferase or α-amylase converts starch or its derivatives into a mixture of cyclodextrins. The βCD units are characterized by α -(1-4) glucopyranose bonds. Cyclodextrins possess certain properties that make them very distinctive because of their toroidal or truncated cage-like supramolecular configurations with multiple hydroxyl groups at each end. This allowed them to encapsulate hydrophobic compounds by forming inclusion complexes without losing their solubility in water. Chemical modifications and newer derivatives, such as methylated βCD, more soluble hydroxyl propyl methyl βCD, and sodium salts of sulfobutylether-βCD, known as dexolve® or captisol®, have envisaged the use of CDs in various pharmaceutical, medical, and cosmetic industries. The successful inclusion of drug complexes has demonstrated improved solubility, bioavailability, drug resistance reduction, targeting, and penetration across skin and brain tissues. This review encompasses the current applications of β-CDs in improving the disease outcomes of antimicrobials and antifungals as well as anticancer and anti-tubercular drugs.
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Affiliation(s)
- Fatmah Alshati
- School of Pharmacy, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - Teejan Ameer Abed Alahmed
- School of Pharmacy, University of Nottingham Malaysia, Jalan Broga, Semenyih 43500, Selangor, Malaysia
| | - Farheen Sami
- Department of Pharmaceutics, Hygia Institute of Pharmaceutical Sciences and Research, Lucknow, India
| | - Md Sajid Ali
- Department of Pharmaceutics, College of Pharmacy, Jazan University, Jazan, Kingdome of Saudi Arabia
| | - Shahnaz Majeed
- Department of Pharmacy, Royal College of Medicine Perak, Universiti Kuala Lumpur, Ipoh, Malaysia
| | - Sheikh Murtuja
- Department of Pharmacy, Palamu Institute of Pharmacy, Chianki, Jharkhand 822102, India
| | - M Saquib Hasnain
- Department of Pharmacy, Palamu Institute of Pharmacy, Chianki, Jharkhand 822102, India
| | - Mohammed Tahir Ansari
- School of Pharmacy, University of Nottingham Malaysia, Jalan Broga, Semenyih 43500, Selangor, Malaysia
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6
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Cai H, Wu YX, Lu Z, Luo D, Sun JX, Wu GW, Li M, Wei YB, Zhong LM, Li D. Mimicking DNA Periodic Docking Grooves for Adaptive Identification of l-/d-Tryptophan in a Biological Metal-Organic Framework. J Am Chem Soc 2022; 144:9559-9563. [PMID: 35604644 DOI: 10.1021/jacs.2c03326] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Bioinspired metal-organic frameworks (MOFs) serve as suitable crystalline models for recognition and sensing of biomolecules mimicking natural processes, providing new ideas and concepts for cutting-edge biomedical applications. Here, we have successfully prepared a robust biological metal-organic framework with periodic docking grooves resembling the major and minor grooves in the DNA double helix structure, which can be used as unique recognition sites for selectively identifying l-/d-tryptophan (l-/d-Trp). Notably, successful encapsulation of Trp could be observed by single-crystal X-ray diffraction for the first time. Trp has matched size and shape to fit snugly into the major groove. Combined with isothermal titration calorimetry, it was found that ZnBTCHx could spontaneously capture l-/d-Trp through two different thermodynamic pathways: enthalpy-driven for encapsulating l-Trp and entropy-driven for uptaking d-Trp. Furthermore, molecular dynamics and density functional theory verified the role of hydrogen bonding and π-π/C-H···π interactions in the host-guest interface. This work provides unique insight for the construction of bionic models to mimic the natural binding properties, which is of great significance for the fields of pharmaceutical chemistry and biomedical science.
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Affiliation(s)
- Hong Cai
- School of Chemistry and Environmental Engineering, Hanshan Normal University, Chaozhou 521041, P.R. China
| | - Yu-Xin Wu
- School of Chemistry and Environmental Engineering, Hanshan Normal University, Chaozhou 521041, P.R. China
| | - Zhou Lu
- Department of Chemistry, University of North Texas, Denton, Texas 76203, United States
| | - Dong Luo
- College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Functional Supramolecular Co-ordination Materials and Applications, Jinan University, Guangzhou 510632, P.R. China
| | - Jing-Xuan Sun
- Department of Chemistry, Shantou University, Shantou 515063, P.R. China
| | - Guang-Wei Wu
- School of Chemistry and Environmental Engineering, Hanshan Normal University, Chaozhou 521041, P.R. China
| | - Mian Li
- Department of Chemistry, Shantou University, Shantou 515063, P.R. China
| | - Yu-Bai Wei
- College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Functional Supramolecular Co-ordination Materials and Applications, Jinan University, Guangzhou 510632, P.R. China
| | - Li-Ming Zhong
- School of Chemistry and Environmental Engineering, Hanshan Normal University, Chaozhou 521041, P.R. China
| | - Dan Li
- College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Functional Supramolecular Co-ordination Materials and Applications, Jinan University, Guangzhou 510632, P.R. China
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8
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Kubik S. When Molecules Meet in Water-Recent Contributions of Supramolecular Chemistry to the Understanding of Molecular Recognition Processes in Water. Chemistry 2022; 11:e202200028. [PMID: 35373466 PMCID: PMC8977507 DOI: 10.1002/open.202200028] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 03/17/2022] [Indexed: 12/19/2022]
Abstract
Molecular recognition processes in water differ from those in organic solvents in that they are mediated to a much greater extent by solvent effects. The hydrophobic effect, for example, causes molecules that only weakly interact in organic solvents to stay together in water. Such water‐mediated interactions can be very efficient as demonstrated by many of the synthetic receptors discussed in this review, some of which have substrate affinities matching or even surpassing those of natural binders. However, in spite of considerable success in designing such receptors, not all factors determining their binding properties in water are fully understood. Existing concepts still provide plausible explanations why the reorganization of water molecules often causes receptor‐substrate interactions in water to be strongly exothermic rather than entropically favored as predicted by the classical view of the hydrophobic effect.
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Affiliation(s)
- Stefan Kubik
- Technische Universität Kaiserslautern, Fachbereich Chemie - Organische Chemie, Erwin-Schrödinger-Straße 54, 67663, Kaiserslautern, Germany
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9
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Metal coordination to a deep cavitand promotes binding selectivities in water. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.03.039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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10
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Harrison EE, Carpenter BA, St Louis LE, Mullins AG, Waters ML. Development of "Imprint-and-Report" Dynamic Combinatorial Libraries for Differential Sensing Applications. J Am Chem Soc 2021; 143:14845-14854. [PMID: 34463091 DOI: 10.1021/jacs.1c07068] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Sensor arrays using synthetic receptors have found great utility in analyte detection, resulting from their ability to distinguish analytes based on differential signals via indicator displacement. However, synthesis and characterization of receptors for an array remain a bottleneck in the field. Receptor discovery has been streamlined using dynamic combinatorial libraries (DCLs), but the resulting receptors have primarily been utilized in isolation rather than as part of the entire library, with only a few examples that make use of the complexity of a library of receptors. Herein, we demonstrate a unique sensor array approach using "imprint-and-report" DCLs that obviates the need for receptor synthesis and isolation. This strategy leverages information stored in DCLs in the form of differential library speciation to provide a high-throughput method for both developing a sensor array and analyzing data for analyte differentiation. First, each DCL is templated with analyte to give an imprinted library, followed by in situ fluorescent indicator displacement analysis. We further demonstrate that the reverse strategy, imprinting with the fluorescent reporter followed by displacement with each analyte, provides a more sensitive method for differentiating analytes. We describe the development of this differential sensing system using the methylated Arg and Lys post-translational modifications (PTMs). Altogether, 19 combinations of 3-5 DCL data sets that discriminate all 7 PTMs were identified. Thus, a comparable sensor array workflow results in a larger payoff due to the immense information stored within multiple noncovalent networks.
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Affiliation(s)
- Emily E Harrison
- Department of Chemistry, CB 3290, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Benjamin A Carpenter
- Department of Chemistry, CB 3290, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Lauren E St Louis
- Department of Chemistry, CB 3290, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Alexandria G Mullins
- Department of Chemistry, CB 3290, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Marcey L Waters
- Department of Chemistry, CB 3290, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
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11
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Francesconi O, Milanesi F, Nativi C, Roelens S. Molecular Recognition of Disaccharides in Water: Preorganized Macrocyclic or Adaptive Acyclic? Chemistry 2021; 27:10456-10460. [PMID: 33945180 PMCID: PMC8361761 DOI: 10.1002/chem.202101238] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Indexed: 12/02/2022]
Abstract
When facing the dilemma of following a preorganized or adaptive design approach in conceiving the architecture of new biomimetic receptors for carbohydrates, shape-persistent macrocyclic structures were most often chosen to achieve effective recognition of neutral saccharides in water. In contrast, acyclic architectures have seldom been explored, even though potentially simpler and more easily accessible. In this work, comparison of the binding properties of two structurally related diaminocarbazolic receptors, featuring a macrocyclic and an acyclic tweezer-shaped architecture, highlighted the advantages provided by the acyclic receptor in terms of selectivity in the recognition of 1,4-disaccharides of biological interest. Selective recognition of GlcNAc2 , the core fragment of N-glycans exposed on the surface of enveloped viruses, stands as an emblematic example. NMR spectroscopic data and molecular modeling calculations were used to ascertain the differences in binding mode and to shed light on the origin of recognition efficacy and selectivity.
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Affiliation(s)
- Oscar Francesconi
- Department of Chemistry “Ugo Schiff” and INSTMUniversity of FlorencePolo Scientifico e Tecnologico50019Sesto Fiorentino, FirenzeItaly
| | - Francesco Milanesi
- Department of Chemistry “Ugo Schiff” and INSTMUniversity of FlorencePolo Scientifico e Tecnologico50019Sesto Fiorentino, FirenzeItaly
- Magnetic Resonance Center CERMVia L. Sacconi 650019Sesto Fiorentino, FirenzeItaly
| | - Cristina Nativi
- Department of Chemistry “Ugo Schiff” and INSTMUniversity of FlorencePolo Scientifico e Tecnologico50019Sesto Fiorentino, FirenzeItaly
| | - Stefano Roelens
- Department of Chemistry “Ugo Schiff” and INSTMUniversity of FlorencePolo Scientifico e Tecnologico50019Sesto Fiorentino, FirenzeItaly
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