1
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Zhao Y, Sun Y, Xie X, Liang Y, Cavalcanti-Adam EA, Feng W. Compact Micropatterned Chip Empowers Undisturbed and Programmable Drug Addition in High-Throughput Cell Screening. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2306814. [PMID: 37793694 DOI: 10.1002/adma.202306814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 09/15/2023] [Indexed: 10/06/2023]
Abstract
Simultaneously adding multiple drugs and other chemical reagents to individual droplets at specific time points presents a significant challenge, particularly when dealing with tiny droplets in high-throughput screening applications. In this study, a micropatterned polymer chip is developed as a miniaturized platform for light-induced programmable drug addition in cell-based screening. This chip incorporates a porous superhydrophobic polymer film with atom transfer radical polymerization reactivity, facilitating the efficient grafting of azobenzene methacrylate, a photoconformationally changeable group, onto the hydrophilic regions of polymer matrix at targeted locations and with precise densities. By employing light irradiation, the cyclodextrin-azobenzene host-guest complexes formed on the polymer chip can switch from an "associated" to a "dissociated" state, granting precise photochemical control over the supramolecular coding system and its surface patterning ability. Significantly, the exceptional spatial and temporal control offered by these chemical transitions empowers to utilize digital light processing systems for simultaneous regulation and release of cyclodextrin-bearing drugs across numerous droplets containing suspended or adhered cells. This approach minimizes mechanical disruption while achieving precise control over the timing of addition, dosage, and integration varieties of released drugs in high-throughput screening, all programmable to meet specific requirements.
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Affiliation(s)
- Yuanyi Zhao
- College of Polymer Science and Engineering, Sichuan University, Chengdu, 610065, China
| | - Yingxue Sun
- College of Polymer Science and Engineering, Sichuan University, Chengdu, 610065, China
| | - Xinjian Xie
- College of Polymer Science and Engineering, Sichuan University, Chengdu, 610065, China
| | - Yujia Liang
- College of Polymer Science and Engineering, Sichuan University, Chengdu, 610065, China
| | | | - Wenqian Feng
- College of Polymer Science and Engineering, Sichuan University, Chengdu, 610065, China
- State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China
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2
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Kommidi SSR, Smith BD. Supramolecular Complexation of Azobenzene Dyes by Cucurbit[7]uril. J Org Chem 2023; 88:8431-8440. [PMID: 37256736 PMCID: PMC10843849 DOI: 10.1021/acs.joc.3c00423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
This report describes cucurbit[7]uril (CB7) complexation of azobenzene dyes that have a 4-(N,N'-dimethylamino) or 4-amino substituent. Absorption and NMR data show that CB7 encapsulates the protonated form of the azobenzene and that the complexed dye exists as its azonium tautomer with a trans azo conformation and substantial quinoid resonance character. Because CB7 complexation stabilizes the dye conjugate acid, there is an upward shift in its pKa, and in one specific case, the pKa of the protonated azobenzene is increased from 3.09 to 4.47. Molecular modeling indicates that the CB7/azobenzene complex is stabilized by three major noncovalent factors: (i) ion-dipole interactions between the partially cationic 4-(N,N'-dimethylamino) or 4-amino group on the encapsulated protonated azobenzene and the electronegative carbonyl oxygens on CB7, (ii) inclusion of the upper aryl ring of the azobenzene within the hydrophobic CB7 cavity, and (iii) a hydrogen bond between the proton on the azo nitrogen and CB7 carbonyls. CB7 complexation enhances azobenzene stability and increases azobenzene hydrophilicity; thus, it is a promising way to improve azobenzene performance as a pigment or prodrug. In addition, the striking yellow/pink color change that accompanies CB7 complexation can be exploited to create azobenzene dye displacement assays with naked eye detection.
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Affiliation(s)
- Sai Shradha Reddy Kommidi
- Department of Chemistry and Biochemistry, 251 Nieuwland Science Hall, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - Bradley D. Smith
- Department of Chemistry and Biochemistry, 251 Nieuwland Science Hall, University of Notre Dame, Notre Dame, Indiana 46556, USA
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3
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Wang C, Tang Q, Zhao J, Xiao X, Tao Z, Huang Y. Stimuli‐Responsive Complexation Based on Twisted Cucurbit[14]uril and
p
‐Diaminoazobenzene. ChemistrySelect 2022. [DOI: 10.1002/slct.202202843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- Cheng‐hui Wang
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province Guizhou University Guiyang 550025 China
| | - Qing Tang
- College of Tobacco of Guizhou University Guizhou University Guiyang 550025 China
| | - Jie Zhao
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province Guizhou University Guiyang 550025 China
| | - Xin Xiao
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province Guizhou University Guiyang 550025 China
| | - Zhu Tao
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province Guizhou University Guiyang 550025 China
| | - Ying Huang
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province Guizhou University Guiyang 550025 China
- The Engineering and Research Center for Southwest Bio-Pharmaceutical Resources of the National Education Ministry of China Guizhou University Guiyang 550025 China
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4
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Kommidi SSR, Smith BD. Cucurbit[7]uril Complexation of Near-Infrared Fluorescent Azobenzene-Cyanine Conjugates. Molecules 2022; 27:5440. [PMID: 36080213 PMCID: PMC9457616 DOI: 10.3390/molecules27175440] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Revised: 08/18/2022] [Accepted: 08/20/2022] [Indexed: 01/21/2023] Open
Abstract
Two new azobenzene heptamethine cyanine conjugates exist as dispersed monomeric molecules in methanol solution and exhibit near-infrared (NIR) cyanine absorption and fluorescence. Both conjugates form non-emissive cyanine H-aggregates in water, but the addition of cucurbit[7]uril (CB7) induces dye deaggregation and a large increase in cyanine NIR fluorescence emission intensity. CB7 encapsulates the protonated azonium tautomer of the 4-(N,N-dimethylamino)azobenzene component of each azobenzene-cyanine conjugate and produces a distinctive new absorption band at 534 nm. The complex is quite hydrophilic, which suggests that CB7 can be used as a supramolecular additive to solubilize this new family of NIR azobenzene-cyanine conjugates for future biomedical applications. Since many azobenzene compounds are themselves potential drug candidates or theranostic agents, it should be possible to formulate many of them as CB7 inclusion complexes with improved solubility, stability, and pharmaceutical profile.
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Affiliation(s)
| | - Bradley D. Smith
- Department of Chemistry and Biochemistry, 251 Nieuwland Science Hall, University of Notre Dame, Notre Dame, IN 46556, USA
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5
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Dudek M, Kaczmarek-Kędziera A, Deska R, Trojnar J, Jasik P, Młynarz P, Samoć M, Matczyszyn K. Linear and Nonlinear Optical Properties of Azobenzene Derivatives Modified with an (Amino)naphthalene Moiety. J Phys Chem B 2022; 126:6063-6073. [PMID: 35944057 PMCID: PMC9393860 DOI: 10.1021/acs.jpcb.2c03078] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 07/28/2022] [Indexed: 11/28/2022]
Abstract
The design of two-photon absorbing azobenzene (AB) derivatives has received much attention; however, the two-photon absorption (2PA) properties of bis-conjugated azobenzene systems are relatively less explored. Here, we present the synthesis of six azobenzene derivatives and three bis-azobenzenes substituted (or not) at para position(s) with one or two amino group(s). Their linear and nonlinear absorption properties are studied experimentally and theoretically. The switching behavior and thermal stability of the Z-isomer are studied for unsubstituted mono- (1a, 2a) and bis-azobenzene (3a) compounds, showing that when the length of the π system increases, the half-life of the Z-isomer decreases. Moreover, along with the increase of π-conjugation, the photochromic characteristics are impaired and the photostationary state (PSS) related to E-Z photoisomerization is composed of 89% of the Z-isomer for 2a and 26% of the Z-isomer for 3a. Importantly, the 2PA cross-section increases almost five-fold on extending the π-conjugation (2a vs 3a) and by about one order of magnitude when comparing two systems: the unsubstituted π-electron one (2a, 3a) with D-π-D (2c, 3c). This work clarifies the contribution of π-conjugation and substituent effects to the linear and nonlinear optical properties of mono- and bis-azobenzene compounds based on the experimental and theoretical approaches.
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Affiliation(s)
- Marta Dudek
- Institute
of Advanced Materials, Faculty of Chemistry, Wrocław University of Science and Technology, Wyb. Wyspiańskiego 27, 50-370 Wrocław, Poland
| | | | - Radosław Deska
- Institute
of Advanced Materials, Faculty of Chemistry, Wrocław University of Science and Technology, Wyb. Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Jakub Trojnar
- Institute
of Advanced Materials, Faculty of Chemistry, Wrocław University of Science and Technology, Wyb. Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Patryk Jasik
- Faculty
of Applied Physics and Mathematics and BioTechMed Center, Gdańsk University of Technology, Gabriela Narutowicza 11/12, 80-233 Gdańsk, Poland
| | - Piotr Młynarz
- Department
of Biochemistry, Molecular Biology and Biotechnology, Faculty of Chemistry, Wrocław University of Science and Technology, Wyb. Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Marek Samoć
- Institute
of Advanced Materials, Faculty of Chemistry, Wrocław University of Science and Technology, Wyb. Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Katarzyna Matczyszyn
- Institute
of Advanced Materials, Faculty of Chemistry, Wrocław University of Science and Technology, Wyb. Wyspiańskiego 27, 50-370 Wrocław, Poland
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6
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Sarraute S, Biesse-Martin AS, Devemy J, Dequidt A, Bonal C, Malfreyt P. Investigation of the Complexation between 4-Aminoazobenzene and Cucurbit[7]uril through a Combined Spectroscopic, Nuclear Magnetic Resonance, and Molecular Simulation Studies. ACS OMEGA 2022; 7:25013-25021. [PMID: 35910107 PMCID: PMC9330255 DOI: 10.1021/acsomega.2c00499] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 06/30/2022] [Indexed: 06/02/2023]
Abstract
Cucurbiturils are well known for their ability to form supramolecular systems with ultrahigh affinities binding. Inclusion complex between 4-aminoazobenzene and cucurbit[7]uril has been investigated in aqueous solution by ultraviolet (UV)-spectroscopy, 1H NMR, and molecular simulations. 4-aminoazobenzene shows high affinity in acidic solutions while no association was detected in neutral solutions. The thermodynamic properties of complex formation are investigated using both UV spectroscopy and nuclear magnetic resonance (NMR) measurements. Our results highlight that the high binding constant between CB7 and 4AA (log K = 4.9) is the result of a large negative change in Δr H° (-19 kJ/mol) and a small positive change in TΔr S° (9 kJ/mol). The analysis of the experimental data lead to hypothesis on the structure of the complex. We have used molecular dynamics simulation to interpret experiments. Interestingly, the cis-trans isomerization of aminoazobenzene is considered. All the results are discussed and compared with those previously obtained with other host molecules.
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7
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Alcázar JJ, Márquez E, García-Río L, Robles-Muñoz A, Fierro A, Santos JG, Aliaga ME. Changes in Protonation Sites of 3-Styryl Derivatives of 7-(dialkylamino)-aza-coumarin Dyes Induced by Cucurbit[7]uril. Front Chem 2022; 10:870137. [PMID: 35494653 PMCID: PMC9046931 DOI: 10.3389/fchem.2022.870137] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Accepted: 03/03/2022] [Indexed: 11/13/2022] Open
Abstract
The incorporation of a guest, with different basic sites, into an organized system (host), such as macrocycles, could stabilize, detect, or promote the formation of a certain protomer. In this context, this work aimed to study the influence of cucurbit[7]uril (CB7) on dyes such as 7-(dimethylamino)-aza-coumarins, which have more than one basic site along their molecular structure. For this, three 3-styryl derivatives of 7-(dialkylamino)-aza-coumarin dyes (SAC1-3) were synthesized and characterized by NMR, ESI-HRMS and IR. The spectral behaviour of the SACs in the absence and presence of CB7 was studied. The results showed large shifts in the UV-vis spectrum in acid medium: a hypsochromic shift of ≈5400 cm−1 (SAC1-2) and ≈3500 cm−1 (SAC3) in the absence of CB7 and a bathochromic shift of ≈4500 cm−1 (SAC1-3) in the presence of CB7. The new absorptions at long and short wavelengths were assigned to the corresponding protomers by computational calculations at the density functional theory (DFT) level. Additionally, the binding mode was corroborated by molecular dynamics simulations. Findings revealed that in the presence of CB7 the heterocyclic nitrogen was preferably protonated instead of the dialkylamino group. Namely, CB7 induces a change in the protonation preference at the basic sites of the SACs, as consequence of the molecular recognition by the macrocycle.
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Affiliation(s)
- Jackson J. Alcázar
- Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Edgar Márquez
- Departamento de Química y Biología, Facultad de Ciencias Exactas, Grupo de Investigaciones en Química y Biología, Universidad Del Norte, Barranquilla, Colombia
| | - Luis García-Río
- Departamento de Química Física, Centro de Investigación en Química Biológica y Materiales Moleculares (CIQUS), Universidad de Santiago, Santiago, Spain
| | - Agustín Robles-Muñoz
- Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Angélica Fierro
- Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - José G. Santos
- Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago, Chile
- *Correspondence: José G. Santos, ; Margarita E. Aliaga,
| | - Margarita E. Aliaga
- Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago, Chile
- *Correspondence: José G. Santos, ; Margarita E. Aliaga,
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8
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Fahmy SA, Ponte F, Grande G, Fawzy IM, Mandour AA, Sicilia E, Azzazy HMES. Synthesis, Characterization and Host-Guest Complexation of Asplatin: Improved In Vitro Cytotoxicity and Biocompatibility as Compared to Cisplatin. Pharmaceuticals (Basel) 2022; 15:259. [PMID: 35215372 PMCID: PMC8875750 DOI: 10.3390/ph15020259] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 02/08/2022] [Accepted: 02/14/2022] [Indexed: 12/23/2022] Open
Abstract
Para-sulfocalix[n]arenes are promising host molecules that can accommodate various chemotherapeutic drugs. Pt(IV)-based complexes, including satraplatin and asplatin, are promising alternatives that overcome the shortcomings of Pt(II) complexes. In this study, asplatin has been synthesized by fusing acetylsalicylic acid (aspirin) and cisplatin. Furthermore, it has been characterized using 1H NMR, mass spectrometry, elemental analysis, and UHPLC. A host-guest complex of asplatin and p-sulfocalix[4]arene (PSC4) has been developed and characterized using UV, Job's plot analysis, HPLC, and density functional theory (DFT) calculations. The experimental and computational investigations propose that a 1:1 complex between asplatin and PSC4 is formed. The stability constant of the designed complex has been determined using Job's plot and UHPLC and computed to be 9.1 × 104 M-1 and 8.7 × 104 M-1, which corresponds to a free energy of complexation of -6.8 kcal mol-1, while the calculated value for the inclusion free energy is -13.2 kcal mol-1. Both experimentally and theoretically estimated complexation free energy show that a stable host-guest complex can be formed in solution. The in vitro drug release study displayed the ability of the complex to release its cargo at a cancerous pH (pH of 5.5). Additionally, the asplatin/PSC4 complex is shown to be biocompatible when tested on human skin fibroblast noncancerous cells, demonstrating the highest in vitro cytotoxic activity against (MCF-7), cervical (HeLa), and lung cancer cells (A-549), with IC50 values of 0.75, 2.15, and 3.60 µg/mL, respectively. This is as compared to either cisplatin (IC50 of 5.47, 5.94 and 9.61 µg/mL, respectively) or asplatin (IC50 of 1.54, 5.05 and 3.91 µg/mL, respectively). On the other hand, the free asplatin exhibited higher cytotoxicity on cancerous cells and lower toxicity on noncancerous cells. The outcomes of the present joint theoretical and experimental investigation reinforce the interest in platinum-based anticancer therapeutics when they are protected from undesired interactions and suggest the use of the PSC4 macromolecule as a promising carrier for Pt(IV) anticancer drugs. The formed asplatin/PSC4 inclusion complex may represent an effective chemotherapeutic agent.
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Affiliation(s)
- Sherif Ashraf Fahmy
- Department of Chemistry, School of Sciences & Engineering, The American University in Cairo, AUC Avenue, P.O. Box 74, New Cairo 11835, Egypt;
- School of Life and Medical Sciences, University of Hertfordshire Hosted by Global Academic Foundation, R5 New Garden City, New Administrative Capital, AL109AB Cairo 11835, Egypt
| | - Fortuna Ponte
- Department of Chemistry and Chemical Technologies, University of Calabria, Arcavacata di Rende 87036, Italy; (F.P.); (G.G.); (E.S.)
| | - Giulia Grande
- Department of Chemistry and Chemical Technologies, University of Calabria, Arcavacata di Rende 87036, Italy; (F.P.); (G.G.); (E.S.)
| | - Iten M. Fawzy
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Future University in Egypt, Cairo 11835, Egypt; (I.M.F.); (A.A.M.)
| | - Asmaa A. Mandour
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Future University in Egypt, Cairo 11835, Egypt; (I.M.F.); (A.A.M.)
| | - Emilia Sicilia
- Department of Chemistry and Chemical Technologies, University of Calabria, Arcavacata di Rende 87036, Italy; (F.P.); (G.G.); (E.S.)
| | - Hassan Mohamed El-Said Azzazy
- Department of Chemistry, School of Sciences & Engineering, The American University in Cairo, AUC Avenue, P.O. Box 74, New Cairo 11835, Egypt;
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9
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Fahmy SA, Ponte F, Fawzy IM, Sicilia E, Azzazy HMES. Betaine host-guest complexation with a calixarene receptor: enhanced in vitro anticancer effect. RSC Adv 2021; 11:24673-24680. [PMID: 35481025 PMCID: PMC9036920 DOI: 10.1039/d1ra04614d] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Accepted: 07/08/2021] [Indexed: 12/12/2022] Open
Abstract
p-Sulfonatocalix[n]arenes have shown excellent potential for accommodating chemotherapeutic drugs through host-guest complexation and enhancing their anticancer activity. Betaine has been reported to exert an anticancer effect at high concentrations. In order to increase its concentration in cancer cells, we have complexed it with p-SC4, which releases its content in an acidic environment typical of cancer tissue. In this work, a host-guest complex of the chemically stable, natural, and safe active methyl donor (betaine) and p-sulfonatocalix[4]arenes (p-SC4) was designed and characterized using 1H NMR, UV, Job's plot analysis, DFT calculations, and molecular modeling for use in cancer therapeutics. The peak amplitude of the prepared host-guest complexes was linearly proportional to the concentration of betaine in the range of 1.0 × 10-5 M-1 to 2.5 × 10-4 M-1. The reaction stoichiometry between p-SC4 and betaine in the formed complex was 1 : 1. The stability constant for the complex is 8.9 × 104 M-1 which corresponds to a complexation free energy of -6.74 kcal mol-1. Complexation between betaine and p-SC4 was found to involve the insertion of the trimethylammonium group of betaine into the p-SC4 cavity, as supported by the experimental data. The complex displayed enhanced cytotoxic activities against breast adenocarcinoma cells (MCF-7) and cervical cancer cells (HeLa) compared to free betaine. In conclusion, the host-guest complexation of betaine with p-SC4 increases its concentration in cancer cells, which warrants further investigation for cancer therapy.
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Affiliation(s)
- Sherif Ashraf Fahmy
- Department of Chemistry, School of Sciences & Engineering, The American University in Cairo AUC Avenue, PO. Box 74 New Cairo 11835 Egypt +20 2 2795 7565 +20 2 2615 2559
| | - Fortuna Ponte
- Department of Chemistry and Chemical Technologies, University of Calabria Arcavacata di Rende 87036 Italy
| | - Iten M Fawzy
- Pharmaceutical Chemistry Department, Faculty of Pharmaceutical Sciences and Pharmaceutical Industries, Future University in Egypt Cairo 12311 Egypt
| | - Emilia Sicilia
- Department of Chemistry and Chemical Technologies, University of Calabria Arcavacata di Rende 87036 Italy
| | - Hassan Mohamed El-Said Azzazy
- Department of Chemistry, School of Sciences & Engineering, The American University in Cairo AUC Avenue, PO. Box 74 New Cairo 11835 Egypt +20 2 2795 7565 +20 2 2615 2559
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10
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Sedgwick AC, Brewster JT, Wu T, Feng X, Bull SD, Qian X, Sessler JL, James TD, Anslyn EV, Sun X. Indicator displacement assays (IDAs): the past, present and future. Chem Soc Rev 2021; 50:9-38. [DOI: 10.1039/c9cs00538b] [Citation(s) in RCA: 69] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Indicator displacement assays (IDAs) offer a unique and innovative approach to molecular sensing. This Tutorial review discusses the basic concepts of each IDA strategy and illustrates their use in sensing applications.
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Affiliation(s)
- Adam C. Sedgwick
- Department of Chemistry
- The University of Texas at Austin
- Austin
- USA
| | | | - Tianhong Wu
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education
- School of Life Science and Technology
- Xi’an Jiaotong University
- Xi’an
- P. R. China
| | - Xing Feng
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education
- School of Life Science and Technology
- Xi’an Jiaotong University
- Xi’an
- P. R. China
| | | | - Xuhong Qian
- State Key Laboratory of Bioreactor Engineering
- Shanghai Key Laboratory of Chemical Biology
- School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
| | | | | | - Eric V. Anslyn
- Department of Chemistry
- The University of Texas at Austin
- Austin
- USA
| | - Xiaolong Sun
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education
- School of Life Science and Technology
- Xi’an Jiaotong University
- Xi’an
- P. R. China
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11
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Fahmy SA, Ponte F, Fawzy IM, Sicilia E, Bakowsky U, Azzazy HMES. Host-Guest Complexation of Oxaliplatin and Para-Sulfonatocalix[n]Arenes for Potential Use in Cancer Therapy. Molecules 2020; 25:E5926. [PMID: 33327642 PMCID: PMC7765097 DOI: 10.3390/molecules25245926] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 12/11/2020] [Accepted: 12/11/2020] [Indexed: 01/25/2023] Open
Abstract
P-sulfonatocalix[n]arenes have demonstrated a great potential for encapsulation of therapeutic drugs via host-guest complexation to improve solubility, stability, and bioavailability of encapsulated drugs. In this work, guest-host complexes of a third-generation anticancer drug (oxaliplatin) and p-4-sulfocalix[n]arenes (n = 4 and 6; p-SC4 and p-SC6, respectively) were prepared and investigated, using 1H NMR, UV, Job's plot analysis, and DFT calculations, for use as cancer therapeutics. The peak amplitude of the prepared host-guest complexes was linearly proportional to the concentration of oxaliplatin in the range of 1.0 × 10-5 M-1 to 2.1 × 10-4 M-1. The reaction stoichiometry between either p-SC4 or p-SC6 and oxaliplatin in the formed complexes was 1:1. The stability constants for the complexes were 5.07 × 104 M-1 and 6.3 × 104 M-1. These correspond to complexation free energy of -6.39 and -6.52 kcal/mol for p-SC4 and p-SC6, respectively. Complexation between oxaliplatin and p-SC4 or p-SC6 was found to involve hydrogen bonds. Both complexes exhibited enhanced biological and high cytotoxic activities against HT-29 colorectal cells and MCF-7 breast adenocarcinoma compared to free oxaliplatin, which warrants further investigation for cancer therapy.
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Affiliation(s)
- Sherif Ashraf Fahmy
- Department of Chemistry, School of Sciences & Engineering, The American University in Cairo, AUC Avenue, P.O. Box 74, New Cairo 11835, Egypt;
| | - Fortuna Ponte
- Department of Chemistry and Chemical Technologies, University of Calabria, 87036 Arcavacata di Rende, Italy; (F.P.); (E.S.)
| | - Iten M. Fawzy
- Pharmaceutical Chemistry Department, Faculty of Pharmaceutical Sciences and Pharmaceutical Industries, Future University in Egypt, Cairo 12311, Egypt;
| | - Emilia Sicilia
- Department of Chemistry and Chemical Technologies, University of Calabria, 87036 Arcavacata di Rende, Italy; (F.P.); (E.S.)
| | - Udo Bakowsky
- Department of Pharmaceutics and Biopharmaceutics, University of Marburg, Robert-Koch-Str. 4, 35037 Marburg, Germany
| | - Hassan Mohamed El-Said Azzazy
- Department of Chemistry, School of Sciences & Engineering, The American University in Cairo, AUC Avenue, P.O. Box 74, New Cairo 11835, Egypt;
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12
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Fahmy S, Ponte F, Sicilia E, El-Said Azzazy HM. Experimental and Computational Investigations of Carboplatin Supramolecular Complexes. ACS OMEGA 2020; 5:31456-31466. [PMID: 33324858 PMCID: PMC7726934 DOI: 10.1021/acsomega.0c05168] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Accepted: 11/13/2020] [Indexed: 05/28/2023]
Abstract
Supramolecular systems (macromolecules), such as calix[n]arenes (SCn), cyclodextrins (CDs), and cucurbiturils (CBs), are promising vehicles for anticancer drugs. In this work, guest-host complexes of carboplatin, a second-generation platinum-based anticancer drug, and p-4-sulfocalix[n]arenes (n = 4 and 6; PS4 and PS6, respectively) were prepared and studied using 1H NMR, UV, Job's plot analysis, HPLC, and density-functional theory calculations. The experimental and the computational studies suggest the formation of 1:1 complexes between carboplatin and each of PS4 and PS6. The stability constants of the formed complexes were estimated to be 5.3 × 104 M-1 and 9.8 × 104 M-1, which correspond to free energy of complexation of -6.40 and -6.81 kcal mol-1, in the case of PS4 and PS6, respectively. The interaction free energy depends on the different inclusion modes of carboplatin in the host cavities. UV-vis findings and atoms in molecules analysis showed that hydrogen bond interactions stabilize the host-guest complexes without the full inclusion in the host cavity. The in vitro anticancer study revealed that both complexes exhibited stronger anticancer activities against breast adenocarcinoma cells (MCF-7) and lung cancer cells (A-549) compared to free carboplatin, preluding to their potential use in cancer therapy.
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Affiliation(s)
- Sherif
Ashraf Fahmy
- Department
of Chemistry, School of Sciences & Engineering, The American University in Cairo, AUC Avenue, P.O. Box 74, New Cairo 11835, Egypt
| | - Fortuna Ponte
- Department
of Chemistry and Chemical Technologies, University of Calabria, Arcavacata
di Rende 87036, Italy
| | - Emilia Sicilia
- Department
of Chemistry and Chemical Technologies, University of Calabria, Arcavacata
di Rende 87036, Italy
| | - Hassan Mohamed El-Said Azzazy
- Department
of Chemistry, School of Sciences & Engineering, The American University in Cairo, AUC Avenue, P.O. Box 74, New Cairo 11835, Egypt
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13
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Jiang C, Song Z, Yu L, Ye S, He H. Fluorescent probes based on macrocyclic hosts: Construction, mechanism and analytical applications. Trends Analyt Chem 2020. [DOI: 10.1016/j.trac.2020.116086] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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14
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Zou L, Addonizio CJ, Su B, Sis MJ, Braegelman AS, Liu D, Webber MJ. Supramolecular Hydrogels via Light-Responsive Homoternary Cross-Links. Biomacromolecules 2020; 22:171-182. [PMID: 32804483 DOI: 10.1021/acs.biomac.0c00950] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Host-guest physical cross-linking has been used to prepare supramolecular hydrogels for various biomedical applications. More recent efforts to endow these materials with stimuli-responsivity offers an opportunity to precisely tune their function for a target use. In the context of light-responsive materials, azobenzenes are one prevailing motif. Here, an asymmetric azobenzene was explored for its ability to form homoternary complexes with the cucurbit[8]uril macrocycle, exhibiting an affinity (Keq) of 6.21 × 1010 M-2 for sequential binding, though having negative cooperativity. Copolymers were first prepared from different and tunable ratios of NIPAM and DMAEA, and DMAEA groups were then postsynthetically modified with this asymmetric azobenzene. Upon macrocycle addition, these polymers formed supramolecular hydrogels; relaxation dynamics increased with temperature due to temperature-dependent affinity reduction for the ternary complex. Application of UV light disrupted the supramolecular motif through azobenzene photoisomerization, prompting a gel-to-sol transition in the hydrogel. Excitingly, within several minutes at room temperature, thermal relaxation of azobenzene to its trans state afforded rapid hydrogel recovery. By revealing this supramolecular motif and employing facile means for its attachment onto pre-synthesized polymers, the approach described here may further enable stimuli-directed control of supramolecular hydrogels for a number of applications.
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Affiliation(s)
- Lei Zou
- University of Notre Dame, Department of Chemical & Biomolecular Engineering, Notre Dame, Indiana 46556, United States
| | - Christopher J Addonizio
- University of Notre Dame, Department of Chemical & Biomolecular Engineering, Notre Dame, Indiana 46556, United States
| | - Bo Su
- University of Notre Dame, Department of Chemical & Biomolecular Engineering, Notre Dame, Indiana 46556, United States
| | - Matthew J Sis
- University of Notre Dame, Department of Chemical & Biomolecular Engineering, Notre Dame, Indiana 46556, United States
| | - Adam S Braegelman
- University of Notre Dame, Department of Chemical & Biomolecular Engineering, Notre Dame, Indiana 46556, United States
| | - Dongping Liu
- University of Notre Dame, Department of Chemical & Biomolecular Engineering, Notre Dame, Indiana 46556, United States
| | - Matthew J Webber
- University of Notre Dame, Department of Chemical & Biomolecular Engineering, Notre Dame, Indiana 46556, United States
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15
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Cheng S, Shen H, Zhao S, Zhang Y, Xu H, Wang L, Di B, Xu L, Hu C. Orally administered mesoporous silica capped with the cucurbit[8]uril complex to combat colitis and improve intestinal homeostasis by targeting the gut microbiota. NANOSCALE 2020; 12:15348-15363. [PMID: 32648873 DOI: 10.1039/d0nr03037f] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
RATIONALE Inflammatory bowel diseases (IBDs) are still awaiting innovative treatments that can maximize the efficiency of site-specific drug release in the colon while enhancing intestinal homeostasis. METHODS Herein, we present multilayer-coated mesoporous silica (MSs) which release payload drugs specifically in the colon tract in the presence of azoreductase produced by the gut microbiota, and simultaneously rejuvenate the tryptophan metabolism of the microbiome to induce activation of the aryl hydrocarbon receptor (AHR) for increased anti-inflammatory effects. The MSs were prepared by using cucurbit[8]uril (CB[8]) as a supramolecular "handcuff" to assemble chitosan/hyaluronic acid multilayers on the periphery of a mesoporous silica core. RESULTS Strikingly, although MSs remained fairly stable in both acidic and neutral pH, they exhibited excellent responsiveness towards dithionite, an azo-reducing agent employed as a substitute to mimic the specific azoreductase environment in vitro. In comparison with the drug in its free form, hydrocortisone-loaded MSs showed optimized accumulation of therapeutics in the colonic mucosa with minimized premature release in the upper gastrointestinal tract in in vivo imaging and biodistribution studies. The enhanced therapeutic effects of MSs were confirmed in dextran sodium sulfate-induced colitis in mice with promoted colonic epithelial barrier integrity, elevated level of AHR agonists and modulated production of inflammatory cytokines. Furthermore, 16S rRNA analysis showed that the disrupted gut homeostasis of colitic mice was partly corrected by MSs. CONCLUSION This novel drug delivery system using self-assembly of tryptophan-functionalized chitosan, which was precomplexed with CB[8], and azobenzene-functionalized hyaluronic acid on the surface of mesoporous silica nanoparticles provides a synergistic gut microbiota-targeting approach for IBD therapy.
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Affiliation(s)
- Shujie Cheng
- Department of Food Quality and Safety, School of Engineering, China Pharmaceutical University, Nanjing 210009, PR China and National R&D Center for Chinese Herbal Medicine Processing, China Pharmaceutical University, Nanjing 210009, PR China
| | - Haowen Shen
- Key Laboratory of Drug Quality Control and Pharmacovigilance, China Pharmaceutical University, Ministry of Education, Nanjing 210009, PR China. and Jiangsu Institute of Medical Device Testing, Nanjing 210019, PR China
| | - Sibo Zhao
- Department of Pharmaceutical Engineering, School of Engineering, China Pharmaceutical University, Nanjing 211198, PR China.
| | - Yuanxin Zhang
- Department of Food Quality and Safety, School of Engineering, China Pharmaceutical University, Nanjing 210009, PR China and National R&D Center for Chinese Herbal Medicine Processing, China Pharmaceutical University, Nanjing 210009, PR China
| | - Hui Xu
- Department of Food Quality and Safety, School of Engineering, China Pharmaceutical University, Nanjing 210009, PR China and National R&D Center for Chinese Herbal Medicine Processing, China Pharmaceutical University, Nanjing 210009, PR China
| | - Lancheng Wang
- Department of Pharmaceutical Engineering, School of Engineering, China Pharmaceutical University, Nanjing 211198, PR China.
| | - Bin Di
- Key Laboratory of Drug Quality Control and Pharmacovigilance, China Pharmaceutical University, Ministry of Education, Nanjing 210009, PR China.
| | - Lili Xu
- Key Laboratory of Drug Quality Control and Pharmacovigilance, China Pharmaceutical University, Ministry of Education, Nanjing 210009, PR China.
| | - Chi Hu
- Department of Pharmaceutical Engineering, School of Engineering, China Pharmaceutical University, Nanjing 211198, PR China.
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16
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Paul TJ, Vilseck JZ, Hayes RL, Brooks CL. Exploring pH Dependent Host/Guest Binding Affinities. J Phys Chem B 2020; 124:6520-6528. [PMID: 32628482 DOI: 10.1021/acs.jpcb.0c03671] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
When the electrostatic environment surrounding binding partners changes between unbound and bound states, the net uptake or release of a proton is possible by either binding partner. This process is pH-dependent in that the free energy required to uptake or release the proton varies with pH. This pH-dependence is typically not considered in conventional free energy methods where the use of fixed protonation states is the norm. In the present paper, we apply a simple two-step approach to calculate the pH-dependent binding free energy of a model cucubit[7]uril host/guest system. By use of λ-dynamics with an enhanced sampling protocol, adaptive landscape flattening, pKa shifts and reference binding free energies upon complexation were determined. This information enables the construction of pH-dependent binding profiles that accurately capture the pKa shifts and reproduce binding free energies at the different pH conditions that were observed experimentally. Our calculations illustrate a general framework for computing pH-dependent binding free energies but also point to some issues in modeling the molecular charge distributions within this series of molecules with CGenFF. However, by introducing some minor charge modifications to the CGenFF force field, we saw significant improvement in accuracy of the calculated pKa shifts.
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17
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Oshchepkov AS, Namashivaya SSR, Khrustalev VN, Hampel F, Laikov DN, Kataev EA. Control of Photoisomerization of an Azoazacryptand by Anion Binding and Cucurbit[8]uril Encapsulation in an Aqueous Solution. J Org Chem 2020; 85:9255-9263. [PMID: 32584036 DOI: 10.1021/acs.joc.0c01260] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Control of isomerization of a receptor bearing multiple light-switchable subunits in a confined space is critical for the design of synthetic molecular machines. Toward this goal, a new azacryptand containing three azobenzene subunits has been developed, and its photoisomerization in an aqueous solution has been studied depending on anion coordination and recognition by a larger host-cucurbit[8]uril (CB[8]). The cryptand in its hexaprotonated form shows considerable affinity for fluoride and perchlorate, which in turn affects the isomer distribution of the receptor under UV-light irradiation, stabilizing the isomers of the cryptand with Z-configurations. CB[8] was found to be able to encapsulate the isomers of the cryptand by forming a Matryoshka-type complex. The irradiation of a 10:1 CB[8]-cryptand mixture has led to a selective conversion of the cryptand to the E,E,Z isomer inside CB[8]. It has been demonstrated that the addition of fluoride to the resulted complex induces the release of the cryptand as a major E,E,E isomer, while other studied anions were ineffective in this reaction. To our knowledge, this work presents a first example of a host-controlled photoisomerization of an anion receptor bearing multiple switching azobenzenes that model the function of naturally occurring chaperones.
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Affiliation(s)
| | - Siva S R Namashivaya
- Faculty of Natural Sciences, Technische Universität Chemnitz, 09107 Chemnitz, Germany
| | - Victor N Khrustalev
- Peoples' Friendship University of Russia (RUDN University), 117198 Moscow, Russia
| | - Frank Hampel
- Department of Chemistry and Pharmacy, University Erlangen-Nürnberg, Nikolaus-Fiebiger-Str. 10, 91058 Erlangen, Germany
| | - Dimitri N Laikov
- Chemistry Department, Moscow State University, Leninskie Gory, Building 1/3, GSP-1, Moscow 119991, Russia
| | - Evgeny A Kataev
- Department of Chemistry and Pharmacy, University Erlangen-Nürnberg, Nikolaus-Fiebiger-Str. 10, 91058 Erlangen, Germany
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18
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Yang MX, Tang Q, Yang M, Wang Q, Tao Z, Xiao X, Huang Y. pH-stimulus response dye-cucurbituril sensor for amino acids in aqueous solution. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 230:118076. [PMID: 31982654 DOI: 10.1016/j.saa.2020.118076] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 01/14/2020] [Accepted: 01/15/2020] [Indexed: 06/10/2023]
Abstract
The host-guest inclusion complexes that comprise an inverted cucurbit[7]uril (iQ[7]) and a quinoline derivative, 4-(4-dimethylaminostyryl) quinoline (DSQ) at different pHs were exploited as multiple supramolecular sensors to sense l-α-amino acids. DSQ complexation inside iQ[7] at different pHs leads to increased fluorescence and formation of different-colored iQ[7]-DSQ complexes. The enhanced fluorescence of DSQ after iQ[7] encapsulation may be attributed to limited dimethylamine rotation and the formation of a twisted internal charge transfer (TICT) state. The DSQ@iQ[7] sensors have different affinities for l-α-amino acids at different pHs. Therefore, we propose a pH-stimulus response supramolecular sensor for the discrimination of structurally similar l-α-amino acids in aqueous solution.
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Affiliation(s)
- Mei-Xiang Yang
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, China
| | - Qing Tang
- Department College of Tobacco Science, Guizhou University, Guiyang 550025, China
| | - Mei Yang
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, China
| | - Qin Wang
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, China
| | - Zhu Tao
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, China
| | - Xin Xiao
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, China
| | - Ying Huang
- The Engineering and Research Center for Southwest Bio-Pharmaceutical Resources of National Education Ministry of China, Guizhou University, Guiyang 550025, China.
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19
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Garnier L, Bonal C, Malfreyt P. Thermodynamics of Supramolecular Associations with Macrocyclic Water-Soluble Hosts. ACS OMEGA 2019; 4:16899-16905. [PMID: 31646236 PMCID: PMC6796899 DOI: 10.1021/acsomega.9b02136] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Accepted: 09/11/2019] [Indexed: 06/10/2023]
Abstract
The thermodynamic study of the complexation of the β-cyclodextrins and p-sulfonatocalix[n]arenes (CnS) with the 4-aminoazobenzene was reported and was carried out by molecular dynamics simulations. We determined the whole thermodynamic properties (K, Δr G°, Δr H°, and TΔr S°) using the potential of mean force (PMF) technique and more precisely the adaptive biasing force method. Depending on both the nature of the host molecule and the pH of the solution, the PMF profiles present different shapes and energy minima. Considering the complexity of these PMF profiles, we are also interested in the structural properties of these associations. Hence, we calculated hydrogen bonds, Lennard-Jones and electrostatic energies, the number of atoms of the guest molecule inserted inside the cagelike host molecule, and the number of water molecules expelled from the cavity.
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Affiliation(s)
- Ludovic Garnier
- CNRS, SIGMA Clermont, Institut
de Chimie de Clermont-Ferrand, Université
Clermont Auvergne, F63000 Clermont-Ferrand, France
| | - Christine Bonal
- CNRS, SIGMA Clermont, Institut
de Chimie de Clermont-Ferrand, Université
Clermont Auvergne, F63000 Clermont-Ferrand, France
| | - Patrice Malfreyt
- CNRS, SIGMA Clermont, Institut
de Chimie de Clermont-Ferrand, Université
Clermont Auvergne, F63000 Clermont-Ferrand, France
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20
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Host–guest interactions of a twisted cucurbit[15]uril with paraquat derivatives and bispyridinium salts. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.151022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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21
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Rad N, Danylyuk O, Sashuk V. Reversing Chemoselectivity: Simultaneous Positive and Negative Catalysis by Chemically Equivalent Rims of a Cucurbit[7]uril Host. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201905027] [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)
- Nazar Rad
- Institute of Physical ChemistryPolish Academy of Sciences Kasprzaka 44/52 01-224 Warsaw Poland
| | - Oksana Danylyuk
- Institute of Physical ChemistryPolish Academy of Sciences Kasprzaka 44/52 01-224 Warsaw Poland
| | - Volodymyr Sashuk
- Institute of Physical ChemistryPolish Academy of Sciences Kasprzaka 44/52 01-224 Warsaw Poland
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22
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Rad N, Danylyuk O, Sashuk V. Reversing Chemoselectivity: Simultaneous Positive and Negative Catalysis by Chemically Equivalent Rims of a Cucurbit[7]uril Host. Angew Chem Int Ed Engl 2019; 58:11340-11343. [PMID: 31206979 DOI: 10.1002/anie.201905027] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Revised: 05/16/2019] [Indexed: 12/18/2022]
Abstract
Enzyme catalysis has always been an inspiration and an unattainable goal for chemists due to features such as high specificity, selectivity, and efficiency. Here, we disclose a feature neither common in enzymes nor ever described for enzyme mimics, but one that could prove crucial for the catalytic performance of the latter, namely the ability to catalyze and inhibit two different reactions at the same time. Remarkably, this can be realized by two identical, spatially resolved catalytic sites. In the future, such a synchronized catalyst action could be used not only for controlling chemoselectivity, as in the present case, but also for regulating other types of chemical reactivity.
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Affiliation(s)
- Nazar Rad
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warsaw, Poland
| | - Oksana Danylyuk
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warsaw, Poland
| | - Volodymyr Sashuk
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warsaw, Poland
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23
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Zhang K, Sun W, Lin R, Xiao X, Bian B, Tao Z, Liu J. Controlled Encapsulation and Release of an Organic Guest in the Cavity of α,α′,δ,δ′-Tetramethylcucurbit[6]uril. European J Org Chem 2019. [DOI: 10.1002/ejoc.201801652] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Kun Zhang
- College of Chemistry and Chemical Engineering; Anhui University of Technology; 243002 Maanshan China
| | - Wenqi Sun
- College of Chemistry and Chemical Engineering; Anhui University of Technology; 243002 Maanshan China
| | - Ruilian Lin
- College of Chemistry and Chemical Engineering; Anhui University of Technology; 243002 Maanshan China
| | - Xin Xiao
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province; Guizhou University; 550025 Guiyang China
| | - Bing Bian
- College of Chemical and Environmental Engineering; Shandong University of Science and Technology; 266590 Qingdao China
| | - Zhu Tao
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province; Guizhou University; 550025 Guiyang China
| | - Jingxin Liu
- College of Chemistry and Chemical Engineering; Anhui University of Technology; 243002 Maanshan China
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24
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Garnier L, Sarraute S, Israëli Y, Bonal C, Malfreyt P. Associations of Water-Soluble Macrocyclic Hosts with 4-Aminoazobenzene: Impact of pH. J Phys Chem B 2018; 122:11953-11961. [PMID: 30466260 DOI: 10.1021/acs.jpcb.8b09127] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An investigation of the pH effect on the inclusion complexes of β-cyclodextrins and calixarenesulfonates with 4-aminoazobenzene was conducted both by experiments and molecular simulations. The whole thermodynamic characterizations of the association between hosts and 4-aminoazobenzene ( K, Δr G0, Δr H0, and TΔr S0) were determined by UV-visible spectroscopy. β-Cyclodextrin inclusion complexes are not affected by pH change unlike those obtained with calixarenes. All the studied systems were enthalpically favored. Nevertheless, the entropic behavior is different depending on the host. In order to interpret these experimental results, molecular simulations were used to calculate the number of atoms inserted into the cage-like host compounds and the number of water molecules expelled from the cavity.
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Affiliation(s)
- Ludovic Garnier
- Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut de Chimie de Clermont-Ferrand , F-63000 Clermont-Ferrand , France
| | - Sabine Sarraute
- Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut de Chimie de Clermont-Ferrand , F-63000 Clermont-Ferrand , France
| | - Yael Israëli
- Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut de Chimie de Clermont-Ferrand , F-63000 Clermont-Ferrand , France
| | - Christine Bonal
- Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut de Chimie de Clermont-Ferrand , F-63000 Clermont-Ferrand , France
| | - Patrice Malfreyt
- Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut de Chimie de Clermont-Ferrand , F-63000 Clermont-Ferrand , France
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25
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Jin TT, Zhou XH, Yin YF, Zhan TG, Cui J, Liu LJ, Kong LC, Zhang KD. Tunable Water-Soluble Supramolecular Polymers by Visible-Light-Regulated Host-Guest Interactions. Chem Asian J 2018; 13:2818-2823. [DOI: 10.1002/asia.201800982] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Revised: 07/05/2018] [Indexed: 12/17/2022]
Affiliation(s)
- Ting-Ting Jin
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials; College of Chemistry and Life Science; Zhejiang Normal University; 688 Yingbin Road Jinhua 321004 P. R. China
| | - Xiao-He Zhou
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials; College of Chemistry and Life Science; Zhejiang Normal University; 688 Yingbin Road Jinhua 321004 P. R. China
| | - Yong-Fei Yin
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials; College of Chemistry and Life Science; Zhejiang Normal University; 688 Yingbin Road Jinhua 321004 P. R. China
| | - Tian-Guang Zhan
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials; College of Chemistry and Life Science; Zhejiang Normal University; 688 Yingbin Road Jinhua 321004 P. R. China
| | - Jiecheng Cui
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials; College of Chemistry and Life Science; Zhejiang Normal University; 688 Yingbin Road Jinhua 321004 P. R. China
| | - Li-Juan Liu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials; College of Chemistry and Life Science; Zhejiang Normal University; 688 Yingbin Road Jinhua 321004 P. R. China
| | - Li-Chun Kong
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials; College of Chemistry and Life Science; Zhejiang Normal University; 688 Yingbin Road Jinhua 321004 P. R. China
| | - Kang-Da Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials; College of Chemistry and Life Science; Zhejiang Normal University; 688 Yingbin Road Jinhua 321004 P. R. China
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26
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Fahmy SA, Ponte F, Abd El-Rahman MK, Russo N, Sicilia E, Shoeib T. Investigation of the host-guest complexation between 4-sulfocalix[4]arene and nedaplatin for potential use in drug delivery. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 193:528-536. [PMID: 29306207 DOI: 10.1016/j.saa.2017.12.070] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2017] [Revised: 12/10/2017] [Accepted: 12/26/2017] [Indexed: 05/28/2023]
Affiliation(s)
- Sherif Ashraf Fahmy
- Department of Chemistry, The American University in Cairo, New Cairo 11835, Egypt
| | - Fortuna Ponte
- Department of Chemistry and Chemical Technologies, University of Calabria, Arcavacata di Rende, 87036, Italy
| | - Mohamed K Abd El-Rahman
- Analytical Chemistry Department, Faculty of Pharmacy, Cairo University, Kasr-El Aini Street, Cairo, Egypt 11562
| | - Nino Russo
- Department of Chemistry and Chemical Technologies, University of Calabria, Arcavacata di Rende, 87036, Italy; Division de Ciencias Basicas e Ingenieria, Departamento de Quimica, Universidad, Autonoma Metropolitana-Iztapalapa, Av. San Rafael Atlixco No. 186, Col. Vicentina, CP 09340 Mexico, Distrito Federal, Mexico
| | - Emilia Sicilia
- Department of Chemistry and Chemical Technologies, University of Calabria, Arcavacata di Rende, 87036, Italy.
| | - Tamer Shoeib
- Department of Chemistry, The American University in Cairo, New Cairo 11835, Egypt.
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27
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Wang W, Wang X, Cao J, Liu J, Qi B, Zhou X, Zhang S, Gabel D, Nau WM, Assaf KI, Zhang H. The chaotropic effect as an orthogonal assembly motif for multi-responsive dodecaborate-cucurbituril supramolecular networks. Chem Commun (Camb) 2018; 54:2098-2101. [PMID: 29319071 DOI: 10.1039/c7cc08078f] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
In aqueous solution, host-guest complexation is frequently driven by the hydrophobic effect, which also constitutes a popular approach in the design of supramolecular assemblies. Herein, we report an orthogonal assembly motif, the chaotropic effect, which exploits the tendency of chaotropic anions to associate with hydrophobic surfaces.
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Affiliation(s)
- Wenjing Wang
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China.
| | - Xiaoqiang Wang
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China.
| | - Jin Cao
- Hubei Gedian Humanwell Pharmaceutical Excipents Co., Ltd, Gedian 436070, China
| | - Jun Liu
- Hunan University of Arts and Science, Changde 415000, China
| | - Bin Qi
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China.
| | - Xiaohai Zhou
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China.
| | - Shuai Zhang
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Campus Ring 1, 28759 Bremen, Germany.
| | - Detlef Gabel
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Campus Ring 1, 28759 Bremen, Germany.
| | - Werner M Nau
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Campus Ring 1, 28759 Bremen, Germany.
| | - Khaleel I Assaf
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Campus Ring 1, 28759 Bremen, Germany.
| | - Haibo Zhang
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China.
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28
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Affiliation(s)
- Stephan Sinn
- Institute of Nanotechnology (INT); Karlsruhe Institute of Technology (KIT); Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Deutschland/Germany
| | - Frank Biedermann
- Institute of Nanotechnology (INT); Karlsruhe Institute of Technology (KIT); Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Deutschland/Germany
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29
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Meng LJ, Zhao WX, Chen LX, Sun WQ, Lin RL, Zhu QJ, Tao Z, Liu JX. Single and Double Binding of 1,10-Phenanthroline and 4,7-Dimethyl-1,10-phenanthroline to HMeQ[7]: Contrasting p K
a Shifts Induced by HMeQ[7]. ChemistrySelect 2018. [DOI: 10.1002/slct.201703040] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Ling-Jian Meng
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province; Guizhou University; Guiyang 550025 China
| | - Wen-Xuan Zhao
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province; Guizhou University; Guiyang 550025 China
| | - Li-Xia Chen
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province; Guizhou University; Guiyang 550025 China
| | - Wen-Qi Sun
- College of Chemistry and Chemical Engineering; Anhui University of Technology; Maanshan 243002 China
| | - Rui-Lian Lin
- College of Chemistry and Chemical Engineering; Anhui University of Technology; Maanshan 243002 China
| | - Qian-Jiang Zhu
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province; Guizhou University; Guiyang 550025 China
| | - Zhu Tao
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province; Guizhou University; Guiyang 550025 China
| | - Jing-Xin Liu
- College of Chemistry and Chemical Engineering; Anhui University of Technology; Maanshan 243002 China
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30
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Zubillaga A, Ferreira P, Parola AJ, Gago S, Basílio N. pH-Gated photoresponsive shuttling in a water-soluble pseudorotaxane. Chem Commun (Camb) 2018; 54:2743-2746. [DOI: 10.1039/c8cc00688a] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Phototriggered ring shuttling in a water-soluble fluorescent pseudorotaxane can be enabled and disabled at different pH values.
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Affiliation(s)
- A. Zubillaga
- Laboratório Associado para a Química Verde (LAQV), Rede de Química e Tecnologia (REQUIMTE), Departmento de Química, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa
- 2829-516 Caparica
- Portugal
| | - P. Ferreira
- Laboratório Associado para a Química Verde (LAQV), Rede de Química e Tecnologia (REQUIMTE), Departmento de Química, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa
- 2829-516 Caparica
- Portugal
| | - A. J. Parola
- Laboratório Associado para a Química Verde (LAQV), Rede de Química e Tecnologia (REQUIMTE), Departmento de Química, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa
- 2829-516 Caparica
- Portugal
| | - S. Gago
- Laboratório Associado para a Química Verde (LAQV), Rede de Química e Tecnologia (REQUIMTE), Departmento de Química, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa
- 2829-516 Caparica
- Portugal
| | - N. Basílio
- Laboratório Associado para a Química Verde (LAQV), Rede de Química e Tecnologia (REQUIMTE), Departmento de Química, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa
- 2829-516 Caparica
- Portugal
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31
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Al-Burtomani SKS, Suliman FO. Experimental and theoretical study of the inclusion complexes of epinephrine with β-cyclodextrin, 18-crown-6 and cucurbit[7]uril. NEW J CHEM 2018. [DOI: 10.1039/c7nj04766e] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Experimental and molecular dynamics techniques suggested that stable complexes of epinephrine with 18C6, βCD and CB7 might enhance aggregation.
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32
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Li Q, Sun J, Zhou J, Hua B, Shao L, Huang F. Barium cation-responsive supra-amphiphile constructed by a new twisted cucurbit[15]uril/paraquat recognition motif in water. Org Chem Front 2018. [DOI: 10.1039/c8qo00323h] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
A new, strong, and barium cation-responsive host–guest recognition motif based on twisted cucurbit[15]uril and paraquat was established in water.
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Affiliation(s)
- Qing Li
- State Key Laboratory of Chemical Engineering
- Center for Chemistry of High-Performance & Novel Materials
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
| | - Jifu Sun
- State Key Laboratory of Chemical Engineering
- Center for Chemistry of High-Performance & Novel Materials
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
| | - Jiong Zhou
- State Key Laboratory of Chemical Engineering
- Center for Chemistry of High-Performance & Novel Materials
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
| | - Bin Hua
- State Key Laboratory of Chemical Engineering
- Center for Chemistry of High-Performance & Novel Materials
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
| | - Li Shao
- State Key Laboratory of Chemical Engineering
- Center for Chemistry of High-Performance & Novel Materials
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
| | - Feihe Huang
- State Key Laboratory of Chemical Engineering
- Center for Chemistry of High-Performance & Novel Materials
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
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33
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Wiemann M, Niebuhr R, Juan A, Cavatorta E, Ravoo BJ, Jonkheijm P. Photo-responsive Bioactive Surfaces Based on Cucurbit[8]uril-Mediated Host-Guest Interactions of Arylazopyrazoles. Chemistry 2017; 24:813-817. [PMID: 29283194 PMCID: PMC5814888 DOI: 10.1002/chem.201705426] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Indexed: 11/13/2022]
Abstract
A photoswitchable arylazopyrazole (AAP) derivative binds with cucurbit[8]uril (CB[8]) and methylviologen (MV2+) to form a 1:1:1 heteroternary host–guest complex with a binding constant of Ka=2×103
m−1. The excellent photoswitching properties of AAP are preserved in the inclusion complex. Irradiation with light of a wavelength of 365 and 520 nm leads to quantitative E‐ to Z‐ isomerization and vice versa, respectively. Formation of the Z‐isomer leads to dissociation of the complex as evidenced using 1H NMR spectroscopy. AAP derivatives are then used to immobilize bioactive molecules and photorelease them on demand. When Arg‐Gly‐Asp‐AAP (AAP–RGD) peptides are attached to surface bound CB[8]/MV2+ complexes, cells adhere and can be released upon irradiation. The heteroternary host–guest system offers highly reversible binding properties due to efficient photoswitching and these properties are attractive for designing smart surfaces.
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Affiliation(s)
- Maike Wiemann
- Bioinspired Molecular Engineering Laboratory of the MIRA Institute for, Biomedical Technology and Technical Medicine and of the MESA and Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE, Enschede, The Netherlands
| | - Rebecca Niebuhr
- Organic Chemistry Institute and Center for Soft Nanoscience, Westfälische Wilhelms-University Münster, Corrensstrasse 40, 48149, Münster, Germany
| | - Alberto Juan
- Bioinspired Molecular Engineering Laboratory of the MIRA Institute for, Biomedical Technology and Technical Medicine and of the MESA and Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE, Enschede, The Netherlands
| | - Emanuela Cavatorta
- Bioinspired Molecular Engineering Laboratory of the MIRA Institute for, Biomedical Technology and Technical Medicine and of the MESA and Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE, Enschede, The Netherlands
| | - Bart Jan Ravoo
- Organic Chemistry Institute and Center for Soft Nanoscience, Westfälische Wilhelms-University Münster, Corrensstrasse 40, 48149, Münster, Germany
| | - Pascal Jonkheijm
- Bioinspired Molecular Engineering Laboratory of the MIRA Institute for, Biomedical Technology and Technical Medicine and of the MESA and Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE, Enschede, The Netherlands
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34
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Dey N, Maji B, Bhattacharya S. A Versatile Probe for Caffeine Detection in Real-Life Samples via Excitation-Triggered Alteration in the Sensing Behavior of Fluorescent Organic Nanoaggregates. Anal Chem 2017; 90:821-829. [DOI: 10.1021/acs.analchem.7b03520] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Nilanjan Dey
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Basudeb Maji
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Santanu Bhattacharya
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India
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35
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A cucurbit[7]uril-based supra-amphiphile: Photo-responsive self-assembly and application in controlled release. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.03.091] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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36
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Wu Y, Xu L, Shen Y, Wang Y, Wang Q. Helianthus-like cucurbit[4]uril and cucurbit[5]uril analogues. NEW J CHEM 2017. [DOI: 10.1039/c7nj01595j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two cucurbituril-like macrocycles were synthesized by condensing cyclopentano-substituted propanediurea with formaldehyde in the presence and absence of Ca2+.
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Affiliation(s)
- Yufan Wu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- School of Chemistry & Molecular Engineering
- East China University of Science & Technology
- Shanghai 200237
- P. R. China
| | - Lixi Xu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- School of Chemistry & Molecular Engineering
- East China University of Science & Technology
- Shanghai 200237
- P. R. China
| | - Yenan Shen
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- School of Chemistry & Molecular Engineering
- East China University of Science & Technology
- Shanghai 200237
- P. R. China
| | - Yang Wang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- School of Chemistry & Molecular Engineering
- East China University of Science & Technology
- Shanghai 200237
- P. R. China
| | - Qiaochun Wang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- School of Chemistry & Molecular Engineering
- East China University of Science & Technology
- Shanghai 200237
- P. R. China
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37
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Ma N, Wang WJ, Chen S, Wang XS, Wang XQ, Wang SB, Zhu JY, Cheng SX, Zhang XZ. Cucurbit[8]uril-mediated supramolecular photoswitching for self-preservation of mesoporous silica nanoparticle delivery system. Chem Commun (Camb) 2015; 51:12970-3. [DOI: 10.1039/c5cc04631a] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The self peptide was introduced into the drug loaded mesoporous silica nanoparticle surface through a supramolecular photoswitchable heteroternary complexation, leading to photosensitive drug release.
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Affiliation(s)
- Ning Ma
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry
- Wuhan University
- Wuhan 430072
- P. R. China
| | - Wen-Jing Wang
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry
- Wuhan University
- Wuhan 430072
- P. R. China
| | - Si Chen
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry
- Wuhan University
- Wuhan 430072
- P. R. China
| | - Xiao-Shuang Wang
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry
- Wuhan University
- Wuhan 430072
- P. R. China
| | - Xiao-Qiang Wang
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry
- Wuhan University
- Wuhan 430072
- P. R. China
| | - Shi-Bo Wang
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry
- Wuhan University
- Wuhan 430072
- P. R. China
| | - Jing-Yi Zhu
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry
- Wuhan University
- Wuhan 430072
- P. R. China
| | - Si-Xue Cheng
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry
- Wuhan University
- Wuhan 430072
- P. R. China
| | - Xian-Zheng Zhang
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry
- Wuhan University
- Wuhan 430072
- P. R. China
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38
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Li QL, Sun Y, Sun YL, Wen J, Zhou Y, Bing QM, Isaacs LD, Jin Y, Gao H, Yang YW. Mesoporous Silica Nanoparticles Coated by Layer-by-Layer Self-assembly Using Cucurbit[7]uril for in Vitro and in Vivo Anticancer Drug Release. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2014; 26:6418-6431. [PMID: 25620848 PMCID: PMC4299401 DOI: 10.1021/cm503304p] [Citation(s) in RCA: 138] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Revised: 10/14/2014] [Indexed: 05/07/2023]
Abstract
Mesoporous silica nanoparticles (MSNs) are promising solid supports for controlled anticancer drug delivery. Herein, we report biocompatible layer-by-layer (LbL) coated MSNs (LbL-MSNs) that are designed and crafted to release encapsulated anticancer drugs, e.g., doxorubicin hydrochloride (DOX), by changing the pH or by adding competitive agents. The LbL coating process comprises bis-aminated poly(glycerol methacrylate)s (BA-PGOHMAs) and cucurbit[7]uril (CB[7]), where CB[7] serves as a molecular bridge holding two different bis-aminated polymeric layers together by means of host-guest interactions. This integrated nanosystem is tuned to respond under specific acidic conditions or by adding adamantaneamine hydrochloride (AH), attributed to the competitive binding of hydronium ions or AH to CB[7] with BA-PGOHMAs. These LbL-MSN hybrids possess excellent biostability, negligible premature drug leakage at pH 7.4, and exceptional stimuli-responsive drug release performance. The pore sizes of the MSNs and bis-aminated compounds (different carbon numbers) of BA-PGOHMAs have been optimized to provide effective integrated nanosystems for the loading and release of DOX. Significantly, the operating pH for the controlled release of DOX matches the acidifying endosomal compartments of HeLa cancer cells, suggesting that these hybrid nanosystems are good candidates for autonomous anticancer drug nanocarriers actuated by intracellular pH changes without any invasive external stimuli. The successful cellular uptake and release of cargo, e.g., propidium iodide (PI), in human breast cancer cell line MDA-231 from PI-loaded LbL-MSNs have been confirmed by confocal laser scanning microscopy (CLSM), while the cytotoxicities of DOX-loaded LbL-MSNs have been quantified by the Cell Counting Kit-8 (CCK-8) viability assay against HeLa cell lines and fibroblast L929 cell lines. The uptake of DOX-loaded LbL-MSNs by macrophages can be efficiently reduced by adding biocompatible hydrophilic poly(ethylene glycol) or CB[7] without destroying the capping. In vivo tumor-growth inhibition experiments with BALB/c nude mice demonstrated a highly efficient tumor-growth inhibition rate of DOX-loaded LbL-MSNs, suggesting that the novel type of LbL-MSN materials hold great potentials in anticancer drug delivery.
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Affiliation(s)
- Qing-Lan Li
- State Key Laboratory of
Supramolecular Structure and Materials, College
of Chemistry, International Joint Research Laboratory of Nano-Micro
Architecture Chemistry (NMAC) and Key Laboratory for Molecular Enzymology
& Engineering, Ministry of Education, Jilin University, 2699
Qianjin Street, Changchun, 130012 P.R. China
| | - Yanfang Sun
- State Key Laboratory of
Supramolecular Structure and Materials, College
of Chemistry, International Joint Research Laboratory of Nano-Micro
Architecture Chemistry (NMAC) and Key Laboratory for Molecular Enzymology
& Engineering, Ministry of Education, Jilin University, 2699
Qianjin Street, Changchun, 130012 P.R. China
- School
of Chemistry and Chemical Engineering, Tianjin
University of Technology, Tianjin, 300384 P.R. China
| | - Yu-Long Sun
- State Key Laboratory of
Supramolecular Structure and Materials, College
of Chemistry, International Joint Research Laboratory of Nano-Micro
Architecture Chemistry (NMAC) and Key Laboratory for Molecular Enzymology
& Engineering, Ministry of Education, Jilin University, 2699
Qianjin Street, Changchun, 130012 P.R. China
| | - Jijie Wen
- School
of Chemistry and Chemical Engineering, Tianjin
University of Technology, Tianjin, 300384 P.R. China
| | - Yue Zhou
- State Key Laboratory of
Supramolecular Structure and Materials, College
of Chemistry, International Joint Research Laboratory of Nano-Micro
Architecture Chemistry (NMAC) and Key Laboratory for Molecular Enzymology
& Engineering, Ministry of Education, Jilin University, 2699
Qianjin Street, Changchun, 130012 P.R. China
| | - Qi-Ming Bing
- State Key Laboratory of
Supramolecular Structure and Materials, College
of Chemistry, International Joint Research Laboratory of Nano-Micro
Architecture Chemistry (NMAC) and Key Laboratory for Molecular Enzymology
& Engineering, Ministry of Education, Jilin University, 2699
Qianjin Street, Changchun, 130012 P.R. China
| | - Lyle D. Isaacs
- Department
of Chemistry and Biochemistry, University
of Maryland, College
Park, Maryland 20742-4454, United States
| | - Yinghua Jin
- State Key Laboratory of
Supramolecular Structure and Materials, College
of Chemistry, International Joint Research Laboratory of Nano-Micro
Architecture Chemistry (NMAC) and Key Laboratory for Molecular Enzymology
& Engineering, Ministry of Education, Jilin University, 2699
Qianjin Street, Changchun, 130012 P.R. China
| | - Hui Gao
- School
of Chemistry and Chemical Engineering, Tianjin
University of Technology, Tianjin, 300384 P.R. China
- E-mail: (H.G.)
| | - Ying-Wei Yang
- State Key Laboratory of
Supramolecular Structure and Materials, College
of Chemistry, International Joint Research Laboratory of Nano-Micro
Architecture Chemistry (NMAC) and Key Laboratory for Molecular Enzymology
& Engineering, Ministry of Education, Jilin University, 2699
Qianjin Street, Changchun, 130012 P.R. China
- E-mail: (Y.W.Y.)
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39
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Cucurbituril: Chiral Applications. Chirality 2014; 26:712-23. [DOI: 10.1002/chir.22363] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2014] [Revised: 06/23/2014] [Accepted: 07/01/2014] [Indexed: 01/17/2023]
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Isaacs L. Stimuli responsive systems constructed using cucurbit[n]uril-type molecular containers. Acc Chem Res 2014; 47:2052-62. [PMID: 24785941 PMCID: PMC4100796 DOI: 10.1021/ar500075g] [Citation(s) in RCA: 370] [Impact Index Per Article: 37.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Conspectus This Account focuses on stimuli responsive systems that function in aqueous solution using examples drawn from the work of the Isaacs group using cucurbit[n]uril (CB[n]) molecular containers as key recognition elements. Our entry into the area of stimuli responsive systems began with the preparation of glycoluril derived molecular clips that efficiently distinguish between self and nonself by H-bonds and π-π interactions even within complex mixtures and therefore undergo self-sorting. We concluded that the selectivity of a wide variety of H-bonded supramolecular assemblies was higher than previously appreciated and that self-sorting is not exceptional behavior. This lead us to examine self-sorting within the context of CB[n] host-guest chemistry in water. We discovered that CB[n] homologues (CB[7] and CB[8]) display remarkably high binding affinity (Ka up to 10(17) M(-1)) and selectivity (ΔΔG) toward their guests, which renders CB[n]s prime components for the construction of stimuli responsive host-guest systems. The CB[7]·adamantaneammonium ion complex, which is particularly privileged (Ka = 4.2 × 10(12) M(-1)), was introduced by us as a stimulus to trigger constitutional changes in multicomponent self-sorting systems. For example, we describe how the free energy associated with the formation of host-guest complexes of CB[n]-type receptors can drive conformational changes of included guests like triazene-arylene foldamers and cationic calix[4]arenes, as well as induced conformational changes (e.g., ammonium guest size dependent homotropic allostery, metal ion triggered folding, and heterochiral dimerization) of the hosts themselves. Many guests display large pKa shifts within their CB[n]-guest complexes, which we used to promote pH controlled guest swapping and thermal trans-to-cis isomerization of azobenzene derivatives. We also used the high affinity and selectivity of CB[7] toward its guests to outcompete an enzyme (bovine carbonic anhydrase) for a two-faced inhibitor, which allowed stimuli responsive regulation of enzymatic activity. These results prompted us to examine the use of CB[n]-type receptors in both in vitro and in vivo biological systems. We demonstrated that adamantaneammonium ion can be used to intracellularly sequester CB[7] from gold nanoparticles passivated with hexanediammonium ion·CB[7] complexes and thereby trigger cytotoxicity. CB[7] derivatives bearing a biotin targeting group enhance the cytotoxicity of encapsulated oxaliplatin toward L1210FR cells. Finally, acyclic CB[n]-type receptors function as solubilizing excipients for insoluble drugs for drug delivery purposes and as a broad spectrum reversal agent for the neuromuscular blocking agents rocuronium, vecuronium, and cis-atracurium in rats. The work highlights the great potential for integration of CB[n]-type receptors with biological systems.
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Affiliation(s)
- Lyle Isaacs
- Department of Chemistry and
Biochemistry, University of Maryland, College Park, Maryland 20742, United States
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41
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Baroncini M, Gao C, Carboni V, Credi A, Previtera E, Semeraro M, Venturi M, Silvi S. Light Control of Stoichiometry and Motion in Pseudorotaxanes Comprising a Cucurbit[7]uril Wheel and an Azobenzene-Bipyridinium Axle. Chemistry 2014; 20:10737-44. [DOI: 10.1002/chem.201402821] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2014] [Indexed: 01/04/2023]
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42
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Zhang B, Zavalij PY, Isaacs L. Acyclic CB[n]-type molecular containers: effect of solubilizing group on their function as solubilizing excipients. Org Biomol Chem 2014; 12:2413-22. [PMID: 24595500 PMCID: PMC4035228 DOI: 10.1039/c3ob42603c] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
We report the synthesis and X-ray crystal structures of three acyclic CB[n]-type molecular containers (2a, 2h, 2f) that differ in the charge on their solubilizing groups (SO3(−), OH, NH3(+)). The X-ray crystal structures of compounds 2h and 2f reveal a self-folding of the ArOCH2CH2X wall into the cavity driven by π–π interactions, H-bonds and ion–dipole interactions. The need to reverse this self-folding phenomenon upon guest binding decreases the affinity of 2h and 2f toward cationic guests in water relative to 2a as revealed by direct (1)H NMR and UV/Vis titrations as well as UV/Vis competition experiments. We determined the pKa of 6-aminocoumarin 7 (pKa = 3.6) on its own and in the presence anionic, neutral, and cationic hosts (2a: pKa = 4.9; 2h: pKa = 4.1; 2f, pKa = 3.4) which reflect in part the relevance of direct ion–ion interactions between the arms of the host and the guest toward the recognition properties of acyclic CB[n]-type containers. Finally, we showed that the weaker binding affinities measured for neutral and positively charged hosts 2h and 2f compared to anionic 2a results in a decreased ability to act as solubilizing agents for either cationic (tamoxifen), neutral (17α-ethynylestradiol), or anionic (indomethacin) drugs in water. The results establish that acyclic CB[n] compounds that bear anionic solubilizing groups are most suitable for development as general purpose solubilizing excipients for insoluble pharmaceutical agents.
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Affiliation(s)
- Ben Zhang
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, USA.
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Stoffelen C, Voskuhl J, Jonkheijm P, Huskens J. Dual Stimuli-Responsive Self-Assembled Supramolecular Nanoparticles. Angew Chem Int Ed Engl 2014; 53:3400-4. [DOI: 10.1002/anie.201310829] [Citation(s) in RCA: 127] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2013] [Revised: 01/14/2014] [Indexed: 11/09/2022]
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Stoffelen C, Voskuhl J, Jonkheijm P, Huskens J. Dual Stimuli-Responsive Self-Assembled Supramolecular Nanoparticles. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201310829] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Affiliation(s)
- Chun Ren
- Department of Chemistry, University of Missouri, 601 S. College Avenue, Columbia, MO 65211, USA
| | - Jae Seung Lee
- Department of Chemistry, University of Missouri, 601 S. College Avenue, Columbia, MO 65211, USA
| | - Timothy E. Glass
- Department of Chemistry, University of Missouri, 601 S. College Avenue, Columbia, MO 65211, USA
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Schneider HJ, Agrawal P, Yatsimirsky AK. Supramolecular complexations of natural products. Chem Soc Rev 2014; 42:6777-800. [PMID: 23703643 DOI: 10.1039/c3cs60069f] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Complexations of natural products with synthetic receptors as well as the use of natural products as host compounds are reviewed, with an emphasis on possible practical uses or on biomedical significance. Applications such as separation, sensing, enzyme monitoring, and protection of natural drugs are first outlined. We then discuss examples of complexes with all important classes of natural compounds, such as amino acids, peptides, nucleosides/nucleotides, carbohydrates, catecholamines, flavonoids, terpenoids/steroids, alkaloids, antibiotics and toxins.
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Affiliation(s)
- Hans-Jörg Schneider
- FR Organische Chemie, Universität des Saarlandes, D 66041 Saarbrücken, Germany.
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Hayashi N, Ujihara T, Jin S. Recognition of caffeine by a water-soluble acyclic phane compound. Tetrahedron 2014. [DOI: 10.1016/j.tet.2013.12.035] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Datta S, Halder M. Effect of encapsulation in the anion receptor pocket of sub-domain IIA of human serum albumin on the modulation of pKa of warfarin and structurally similar acidic guests: A possible implication on biological activity. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2014; 130:76-85. [DOI: 10.1016/j.jphotobiol.2013.10.013] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Revised: 10/03/2013] [Accepted: 10/19/2013] [Indexed: 01/01/2023]
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Huang Y, Hu QH, Song GX, Tao Z, Xue SF, Zhu QJ, Zhou QD, Wei G. Cucurbit[7,8]urils binding to gefitinib and the effect of complex formation on the solubility and dissolution rate of the drug. RSC Adv 2014. [DOI: 10.1039/c3ra45017a] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Cao L, Isaacs L. Absolute and relative binding affinity of cucurbit[7]uril towards a series of cationic guests. Supramol Chem 2013. [DOI: 10.1080/10610278.2013.852674] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Liping Cao
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, USA
| | - Lyle Isaacs
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, USA
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