1
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Sarafska TP, Spassova MI, Dudev TM, Pereva SM, Stoyanov SD, Spassov TG. Easy and Effective Method for α-CD:N 2O Host-Guest Complex Formation. Int J Mol Sci 2024; 25:5472. [PMID: 38791510 PMCID: PMC11121875 DOI: 10.3390/ijms25105472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2024] [Revised: 05/06/2024] [Accepted: 05/16/2024] [Indexed: 05/26/2024] Open
Abstract
α-CD:N2O "host-guest" type complexes were formed by a simple solid-gas reaction (N2O sorption into α-CD) under different gas pressures and temperatures. The new N2O inclusion method applied in the present study was compared with the already known technique based on the crystallization of clathrates from a water solution of α-CD saturated with N2O. A maximum storage capacity of 4.5 wt.% N2O was achieved when charging the cyclodextrin from a gas phase. The amount of included gas decreases to 1.3 wt.% when the complex is stored in air at 1 atm and room temperature, analogous to that achieved by the crystallization of α-CD:N2O. Furthermore, it was shown that the external coordination of N2O to either the upper or lower rim of α-CD without hydration water displacement is the preferred mode of binding, due to hydrogen bonds with neighboring -OH groups from the host macrocycle and three of the hydration water molecules nearby. The capacity of α-CD to store N2O and the thermal stability of the α-CD:N2O complex demonstrated promising applications of these types of complexes in food and beverages.
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Affiliation(s)
- Tsveta P. Sarafska
- Faculty of Chemistry and Pharmacy, Sofia University “St. Kl. Ohridski”, 1164 Sofia, Bulgaria; (T.P.S.); (M.I.S.); (T.M.D.); (S.M.P.)
| | - Maya I. Spassova
- Faculty of Chemistry and Pharmacy, Sofia University “St. Kl. Ohridski”, 1164 Sofia, Bulgaria; (T.P.S.); (M.I.S.); (T.M.D.); (S.M.P.)
| | - Todor M. Dudev
- Faculty of Chemistry and Pharmacy, Sofia University “St. Kl. Ohridski”, 1164 Sofia, Bulgaria; (T.P.S.); (M.I.S.); (T.M.D.); (S.M.P.)
| | - Stiliana M. Pereva
- Faculty of Chemistry and Pharmacy, Sofia University “St. Kl. Ohridski”, 1164 Sofia, Bulgaria; (T.P.S.); (M.I.S.); (T.M.D.); (S.M.P.)
| | - Simeon D. Stoyanov
- Singapore Institute of Technology, 10 Dover Drive, Singapore 138683, Singapore;
| | - Tony G. Spassov
- Faculty of Chemistry and Pharmacy, Sofia University “St. Kl. Ohridski”, 1164 Sofia, Bulgaria; (T.P.S.); (M.I.S.); (T.M.D.); (S.M.P.)
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2
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Adachi K, Azakami H, Yamauchi M, Koshoji M, Yamamoto A, Tanaka S. Cyclodextrin-Assisted Surface-Enhanced Photochromic Phenomena of Tungsten(VI) Oxide Nanoparticles for Label-Free Colorimetric Detection of Phenylalanine. ACS OMEGA 2024; 9:18957-18972. [PMID: 38708261 PMCID: PMC11064177 DOI: 10.1021/acsomega.3c09239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 02/13/2024] [Accepted: 02/20/2024] [Indexed: 05/07/2024]
Abstract
Herein are presented the results of experiments designed to evaluate the effectiveness of host-guest interactions in improving the sensitivity of colorimetric detection based on surface-enhanced photochromic phenomena of tungsten(VI) oxide (WO3) nanocolloid particles. The UV-induced photochromic coloration of WO3 nanocolloid particles in the presence of aromatic α-amino acid (AA), l-phenylalanine (Phe) or l-2-phenylglycine (Phg), and heptakis(2,3,6-tri-O-methyl)-β-cyclodextrin (TMβCDx) in an aqueous system was investigated using UV-vis absorption spectrometry. The characteristics of the adsorption modes and configurations of AAs on the WO3 surface have also been identified by using a combination of adsorption isotherm analysis and attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR). A distinct linear relationship was observed between the concentration of AAs adsorbed on the WO3 nanocolloid particles and the initial photochromic coloration rate in the corresponding UV-irradiated colloidal WO3 in aqueous media, indicating that a simple and sensitive quantification of AAs can be achieved from UV-induced WO3 photochromic coloration without any complicated preprocessing. The proposed colorimetric assay in the Phe/TMβCDx/WO3 ternary aqueous system had a linear range of 1 × 10-8 to 1 × 10-4 mol dm-3 for Phe detection, with a limit of detection of 8.3 × 10-9 mol dm-3. The combined results from UV-vis absorption, ATR-FTIR, and adsorption isotherm experiments conclusively indicated that the TMβCDx-complexed Phe molecules in the Phe/TMβCDx/WO3 ternary aqueous system are preferentially and strongly inner-sphere adsorbed on the WO3 surface, resulting in a more significant surface-enhanced photochromic phenomenon. The findings in this study provided intriguing insights into the design and development of the "label-free" colorimetric assay system based on the surface-enhanced photochromic phenomenon of the WO3 nanocolloid probe.
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Affiliation(s)
- Kenta Adachi
- Department
of Chemistry, Graduate School of Sciences & Technology for Innovation, Yamaguchi University, Yamaguchi 753-8512, Japan
| | - Hiro Azakami
- Department
of Chemistry, Graduate School of Sciences & Technology for Innovation, Yamaguchi University, Yamaguchi 753-8512, Japan
| | - Miyuki Yamauchi
- Department
of Chemistry, Graduate School of Sciences & Technology for Innovation, Yamaguchi University, Yamaguchi 753-8512, Japan
| | - Moeka Koshoji
- Department
of Chemistry, Faculty of Science, Yamaguchi
University, Yamaguchi 753-8512, Japan
| | - Asami Yamamoto
- Department
of Environmental Science & Engineering, Graduate School of Science
& Engineering, Yamaguchi University, Yamaguchi 753-8512, Japan
| | - Shohei Tanaka
- Department
of Chemistry, Graduate School of Sciences & Technology for Innovation, Yamaguchi University, Yamaguchi 753-8512, Japan
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3
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Desoky MMH, Caldera F, Brunella V, Ferrero R, Hoti G, Trotta F. Cyclodextrins for Lithium Batteries Applications. MATERIALS (BASEL, SWITZERLAND) 2023; 16:5540. [PMID: 37629831 PMCID: PMC10456351 DOI: 10.3390/ma16165540] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 07/27/2023] [Accepted: 07/27/2023] [Indexed: 08/27/2023]
Abstract
Due to their high energy and power density, lithium-ion batteries (LIBs) have gained popularity in response to the demand for effective energy storage solutions. The importance of the electrode architecture in determining battery performance highlights the demand for optimization. By developing useful organic polymers, cyclodextrin architectures have been investigated to improve the performance of Li-based batteries. The macrocyclic oligosaccharides known as cyclodextrins (CDs) have relatively hydrophobic cavities that can enclose other molecules. There are many industries where this "host-guest" relationship has been found useful. The hydrogen bonding and suitable inner cavity diameter of CD have led to its selection as a lithium-ion diffusion channel. CDs have also been used as solid electrolytes for solid-state batteries and as separators and binders to ensure adhesion between electrode components. This review gives a general overview of CD-based materials and how they are used in battery components, highlighting their advantages.
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Affiliation(s)
- Mohamed M. H. Desoky
- Department of Chemistry, University of Torino, Via P. Giuria 7, 10125 Torino, Italy; (F.C.); (V.B.); (R.F.); (G.H.)
| | | | | | | | | | - Francesco Trotta
- Department of Chemistry, University of Torino, Via P. Giuria 7, 10125 Torino, Italy; (F.C.); (V.B.); (R.F.); (G.H.)
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4
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Zhang S, Li W, Luan J, Srivastava A, Carnevale V, Klein ML, Sun J, Wang D, Teora SP, Rijpkema SJ, Meeldijk JD, Wilson DA. Adaptive insertion of a hydrophobic anchor into a poly(ethylene glycol) host for programmable surface functionalization. Nat Chem 2023; 15:240-247. [PMID: 36411361 PMCID: PMC9899690 DOI: 10.1038/s41557-022-01090-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Accepted: 10/17/2022] [Indexed: 11/22/2022]
Abstract
Covalent and non-covalent molecular binding are two strategies to tailor surface properties and functions. However, the lack of responsiveness and requirement for specific binding groups makes spatiotemporal control challenging. Here, we report the adaptive insertion of a hydrophobic anchor into a poly(ethylene glycol) (PEG) host as a non-covalent binding strategy for surface functionalization. By using polycyclic aromatic hydrocarbons as the hydrophobic anchor, hydrophilic charged and non-charged functional modules were spontaneously loaded onto PEG corona in 2 min without the assistance of any catalysts and binding groups. The thermodynamically favourable insertion of the hydrophobic anchor can be reversed by pulling the functional module, enabling programmable surface functionalization. We anticipate that the adaptive molecular recognition between the hydrophobic anchor and the PEG host will challenge the hydrophilic understanding of PEG and enhance the progress in nanomedicine, advanced materials and nanotechnology.
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Affiliation(s)
- Shaohua Zhang
- grid.5590.90000000122931605Institute for Molecules and Materials, Radboud University, Nijmegen, the Netherlands
| | - Wei Li
- grid.5590.90000000122931605Institute for Molecules and Materials, Radboud University, Nijmegen, the Netherlands
| | - Jiabin Luan
- grid.5590.90000000122931605Institute for Molecules and Materials, Radboud University, Nijmegen, the Netherlands
| | - Abhinav Srivastava
- grid.264727.20000 0001 2248 3398Institute for Genomics and Evolutionary Medicine (iGEM) and Department of Biology, Temple University, Philadelphia, PA USA ,grid.264727.20000 0001 2248 3398Institute for Computational Molecular Science, Temple University, Philadelphia, PA USA
| | - Vincenzo Carnevale
- grid.264727.20000 0001 2248 3398Institute for Genomics and Evolutionary Medicine (iGEM) and Department of Biology, Temple University, Philadelphia, PA USA ,grid.264727.20000 0001 2248 3398Institute for Computational Molecular Science, Temple University, Philadelphia, PA USA
| | - Michael L. Klein
- grid.264727.20000 0001 2248 3398Institute for Computational Molecular Science, Temple University, Philadelphia, PA USA
| | - Jiawei Sun
- grid.5590.90000000122931605Institute for Molecules and Materials, Radboud University, Nijmegen, the Netherlands
| | - Danni Wang
- grid.5590.90000000122931605Institute for Molecules and Materials, Radboud University, Nijmegen, the Netherlands
| | - Serena P. Teora
- grid.5590.90000000122931605Institute for Molecules and Materials, Radboud University, Nijmegen, the Netherlands
| | - Sjoerd J. Rijpkema
- grid.5590.90000000122931605Institute for Molecules and Materials, Radboud University, Nijmegen, the Netherlands
| | - Johannes D. Meeldijk
- grid.5477.10000000120346234Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, Utrecht, the Netherlands
| | - Daniela A. Wilson
- grid.5590.90000000122931605Institute for Molecules and Materials, Radboud University, Nijmegen, the Netherlands
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5
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Roy A, Das R, Roy D, Saha S, Ghosh NN, Bhattacharyya S, Roy MN. Encapsulated hydroxychloroquine and chloroquine into cyclic oligosaccharides are the potential therapeutics for COVID-19: insights from first-principles calculations. J Mol Struct 2022; 1247:131371. [PMID: 34462609 PMCID: PMC8387931 DOI: 10.1016/j.molstruc.2021.131371] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 08/14/2021] [Accepted: 08/23/2021] [Indexed: 01/04/2023]
Abstract
Novel-Coronavirus (COVID-19) outburst has become a worldwide pandemic which threaten the scientific community to design and discover efficient and effective treatment strategies against this deadly virus (SARS-CoV-2). Still now, there is no antiviral therapy or drug available in the market which can efficiently combat the infection caused by this virus. In this respect, using available drugs by screening with molecular docking and molecular dynamics studies not only minimizes lengthy chemical trials but also reduces discovery cost for the pharmaceutical industry. During the COVID-19 pandemic situations hydroxychloroquine, chloroquine known as HCQ and CQ tablets have gained popularity as for the treatment coronavirus (COVID-19) but the main threatening effect of HCQ, CQ use lies on their side effects like blistering, peeling, loosening of the skin, blurred vision stomach pain, diarrhea, chest discomfort, pain, or tightness, cough or hoarseness which require immediate medical attention. Encapsulation of HCQ and CQ drugs by the cyclic macromolecules such as α and β-Cyclodextrin, to form host-guest complexes is very effective strategy to mask the cytotoxicity of certain drugs and alleviating and modulating side effects of drug applications. In the present work, we have encapsulated the HCQ and CQ drugs α and β-Cyclodextrin and made a comprehensive analysis of stability, optical properties. Details analysis verified that between QC and HCQ, HQC showed stronger affinity towards β-Cyclodextrin. This strategy can reduce the side effect of HCQ and CQ thereby offers a new way to use these drugs. We hope the present study should help the researchers to develop potential therapeutics against the novel coronavirus.
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Affiliation(s)
- Aditi Roy
- Department of Chemistry, University of North Bengal, Darjeeling, 734013, India
| | - Ranjoy Das
- Department of Chemistry, University of North Bengal, Darjeeling, 734013, India
| | - Debadrita Roy
- Department of Chemistry, University of North Bengal, Darjeeling, 734013, India
| | - Subhadeep Saha
- Department of Chemistry, Government General Degree College at Pedong, Kalimpong-734311, India
| | - Narendra Nath Ghosh
- Department of Chemistry, University of Gour Banga, Mokdumpur, Malda, 732103, India
| | | | - Mahendra Nath Roy
- Department of Chemistry, University of North Bengal, Darjeeling, 734013, India
- Alipurduar University, Alipurduar, 736123, India
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6
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Abstract
Due to their unique structural, physical and chemical properties, cyclodextrins and their derivatives have been of great interest to scientists and researchers in both academia and industry for over a century. Many of the industrial applications of cyclodextrins have arisen from their ability to encapsulate, either partially or fully, other molecules, especially organic compounds. Cyclodextrins are non-toxic oligopolymers of glucose that help to increase the solubility of organic compounds with poor aqueous solubility, can mask odors from foul-smelling compounds, and have been widely studied in the area of drug delivery. In this review, we explore the structural and chemical properties of cyclodextrins that give rise to this encapsulation (i.e., the formation of inclusion complexes) ability. This review is unique from others written on this subject because it provides powerful insights into factors that affect cyclodextrin encapsulation. It also examines these insights in great detail. Later, we provide an overview of some industrial applications of cyclodextrins, while emphasizing the role of encapsulation in these applications. We strongly believe that cyclodextrins will continue to garner interest from scientists for many years to come, and that novel applications of cyclodextrins have yet to be discovered.
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7
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Pereva S, Sarafska T, Petrov V, Angelova S, Spassov T. Inclusion complexes of (S)-naproxen and native cyclodextrins: Supramolecular structure and stability. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130218] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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8
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Melnikova DL, Badrieva ZF, Kostin MA, Maller C, Stas M, Buczek A, Broda MA, Kupka T, Kelterer AM, Tolstoy PM, Skirda VD. On Complex Formation between 5-Fluorouracil and β-Cyclodextrin in Solution and in the Solid State: IR Markers and Detection of Short-Lived Complexes by Diffusion NMR. Molecules 2020; 25:E5706. [PMID: 33287255 PMCID: PMC7731325 DOI: 10.3390/molecules25235706] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 11/27/2020] [Accepted: 11/30/2020] [Indexed: 11/16/2022] Open
Abstract
In this work, the nuclear magnetic resonance (NMR) and IR spectroscopic markers of the complexation between 5-fluorouracil (5-FU) and β-cyclodextrin (β-CD) in solid state and in aqueous solution are investigated. In the attenuated total reflectance(ATR) spectra of 5-FU/β-CD products obtained by physical mixing, kneading and co-precipitation, we have identified the two most promising marker bands that could be used to detect complex formations: the C=O and C-F stretching bands of 5-FU that experience a blue shift by ca. 8 and 2 cm-1 upon complexation. The aqueous solutions were studied by NMR spectroscopy. As routine NMR spectra did not show any signs of complexation, we have analyzed the diffusion attenuation of spin-echo signals and the dependence of the population factor of slowly diffusing components on the diffusion time (diffusion NMR of pulsed-field gradient (PFG) NMR). The analysis has revealed that, at each moment, ~60% of 5-FU molecules form a complex with β-CD and its lifetime is ca. 13.5 ms. It is likely to be an inclusion complex, judging from the independence of the diffusion coefficient of β-CD on complexation. The obtained results could be important for future attempts of finding better methods of targeted anticancer drug delivery.
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Affiliation(s)
- Daria L. Melnikova
- Institute of Physics, Kazan Federal University, Kremlevskaya 16a, 420111 Kazan, Russia; (D.L.M.); (Z.F.B.)
| | - Zilya F. Badrieva
- Institute of Physics, Kazan Federal University, Kremlevskaya 16a, 420111 Kazan, Russia; (D.L.M.); (Z.F.B.)
| | - Mikhail A. Kostin
- Institute of Chemistry, St. Petersburg State University, Universitetskiy pr. 26, 198504 St. Petersburg, Russia;
| | - Corina Maller
- Institute of Physical and Theoretical Chemistry, Graz University of Technology, NAWI Graz, Stremayrgasse 9, 8010 Graz, Austria; (C.M.); (A.-M.K.)
| | - Monika Stas
- Department of Chemistry, Opole University, Oleska Street 48, 45-052 Opole, Poland; (M.S.); (A.B.); (M.A.B.)
| | - Aneta Buczek
- Department of Chemistry, Opole University, Oleska Street 48, 45-052 Opole, Poland; (M.S.); (A.B.); (M.A.B.)
| | - Malgorzata A. Broda
- Department of Chemistry, Opole University, Oleska Street 48, 45-052 Opole, Poland; (M.S.); (A.B.); (M.A.B.)
| | - Teobald Kupka
- Department of Chemistry, Opole University, Oleska Street 48, 45-052 Opole, Poland; (M.S.); (A.B.); (M.A.B.)
| | - Anne-Marie Kelterer
- Institute of Physical and Theoretical Chemistry, Graz University of Technology, NAWI Graz, Stremayrgasse 9, 8010 Graz, Austria; (C.M.); (A.-M.K.)
| | - Peter M. Tolstoy
- Institute of Chemistry, St. Petersburg State University, Universitetskiy pr. 26, 198504 St. Petersburg, Russia;
| | - Vladimir D. Skirda
- Institute of Physics, Kazan Federal University, Kremlevskaya 16a, 420111 Kazan, Russia; (D.L.M.); (Z.F.B.)
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9
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Ghosh T, Mondal S, Maiti R, Nawaz SM, Ghosh NN, Dinda E, Biswas A, Maity SK, Mallik A, Maiti DK. Complementary amide-based donor-acceptor with unique nano-scale aggregation, fluorescence, and band gap-lowering properties: a WORM memory device. NANOTECHNOLOGY 2020; 32:025208. [PMID: 33089825 DOI: 10.1088/1361-6528/abba5a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Organic fluorescent semiconducting nanomaterials have gained widespread research interest owing to their potential applications in the arena of high-tech devices. We designed two pyrazaacene-based compounds, their stacked system, and the role of gluing interactions to fabricate nanomaterials, and determined the prospective band gaps utilizing the density functional theory calculation. The two pyrazaacene derivatives containing complementary amide linkages (-CONH and -NHCO) were efficiently synthesized. The synthesized compounds are highly soluble in common organic solvents as well as highly fluorescent and photostable. The heterocycles and their mixture displayed efficient solvent dependent fluorescence in the visible region of the solar spectrum. Notably, the compounds were associated through complementary NH•••O = C type hydrogen bonding, π-π stacking, and hydrophobic interactions, and thereby afforded nanomaterials with a low band gap. Fascinatingly, the fabricated stacked nanomaterial system exhibited resistive switching behavior, leading to the fabrication of an efficient write-once-read-many-times memory device of crossbar structure.
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Affiliation(s)
- Tanmoy Ghosh
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata 700009, India
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10
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Sandilya A, Natarajan U, Priya MH. Molecular View into the Cyclodextrin Cavity: Structure and Hydration. ACS OMEGA 2020; 5:25655-25667. [PMID: 33073091 PMCID: PMC7557249 DOI: 10.1021/acsomega.0c02760] [Citation(s) in RCA: 71] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Accepted: 08/14/2020] [Indexed: 05/21/2023]
Abstract
We find, through atomistic molecular dynamics simulation of native cyclodextrins (CDs) in water, that although the outer surface of a CD appears like a truncated cone, the inner cavity resembles a conical hourglass because of the inward protrusion of the glycosidic oxygens. Furthermore, the conformations of the constituent α-glucose molecules are found to differ significantly from a free monomeric α-glucose molecule. This is the first computational study that maps the conformational change to the preferential hydrogen bond donating capacity of one of the secondary hydroxyl groups of CD, in consensus with an NMR experiment. We have developed a simple and novel geometry-based technique to identify water molecules occupying the nonspherical CD cavity, and the computed water occupancies are in close agreement with the experimental and density functional theory studies. Our analysis reveals that a water molecule in CD cavity loses out about two hydrogen bonds and remains energetically frustrated but possesses higher orientational degree of freedom compared to bulk water. In the context of CD-drug complexation, these imply a nonclassical, that is, enthalpically driven hydrophobic association of a drug in CD cavity.
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Affiliation(s)
- Avilasha
A. Sandilya
- Department
of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai 600036, India
| | - Upendra Natarajan
- Department
of Chemical Engineering, Indian Institute
of Technology Madras, Chennai 600036, India
| | - M. Hamsa Priya
- Department
of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai 600036, India
- . Phone: +91-44-22574132
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11
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Comparative DFT study of inclusion complexes of thymidine-carborane conjugate with β-cyclodextrin and heptakis(2,6-O-dimethyl)-β-cyclodextrin in water. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113767] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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12
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Pereva S, Nikolova V, Sarafska T, Angelova S, Spassov T, Dudev T. Inclusion complexes of ibuprofen and β-cyclodextrin: Supramolecular structure and stability. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127575] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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13
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Banjare MK, Banjare RK, Behera K, Pandey S, Mundeja P, Ghosh KK. Inclusion complexation of novel synthesis amino acid based ionic liquids with β-cyclodextrin. J Mol Liq 2020; 299:112204. [DOI: https:/doi.org/10.1016/j.molliq.2019.112204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2023]
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14
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Banjare MK, Banjare RK, Behera K, Pandey S, Mundeja P, Ghosh KK. Inclusion complexation of novel synthesis amino acid based ionic liquids with β-cyclodextrin. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2019.112204] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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15
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Pereva S, Nikolova V, Angelova S, Spassov T, Dudev T. Water inside β-cyclodextrin cavity: amount, stability and mechanism of binding. Beilstein J Org Chem 2019; 15:1592-1600. [PMID: 31435441 PMCID: PMC6664416 DOI: 10.3762/bjoc.15.163] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Accepted: 07/01/2019] [Indexed: 01/27/2023] Open
Abstract
Cyclodextrins (CDs) are native host systems with inherent ability to form inclusion complexes with various molecular entities, mostly hydrophobic substances. Host cyclodextrins are accommodative to water molecules as well and contain water in the native state. For β-cyclodextrin (β-CD), there is no consensus regarding the number of bound water molecules and the location of their coordination. A number of intriguing questions remain: (1) Which localities of the host’s macrocycle are the strongest attractors for the guest water molecules? (2) What are the stabilizing factors for the water clusters in the interior of β-CD and what type of interactions between water molecules and cavity walls or between the water molecules themselves are dominating the energetics of the β-CD hydration? (3) What is the maximum number of water molecules inside the cavity of β-CD? (4) How do the thermodynamic characteristics of β-CD hydration compare with those of its smaller α-cyclodextrin (α-CD) counterpart? In this study, we address these questions by employing a combination of experimental (DSC/TG) and theoretical (DFT) approaches.
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Affiliation(s)
- Stiliyana Pereva
- Faculty of Chemistry and Pharmacy, Sofia University "St. Kl. Ohridski", 1164 Sofia, Bulgaria
| | - Valya Nikolova
- Faculty of Chemistry and Pharmacy, Sofia University "St. Kl. Ohridski", 1164 Sofia, Bulgaria
| | - Silvia Angelova
- Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
| | - Tony Spassov
- Faculty of Chemistry and Pharmacy, Sofia University "St. Kl. Ohridski", 1164 Sofia, Bulgaria
| | - Todor Dudev
- Faculty of Chemistry and Pharmacy, Sofia University "St. Kl. Ohridski", 1164 Sofia, Bulgaria
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16
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Cova TF, Milne BF, Pais AA. Host flexibility and space filling in supramolecular complexation of cyclodextrins: A free-energy-oriented approach. Carbohydr Polym 2019; 205:42-54. [DOI: 10.1016/j.carbpol.2018.10.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 10/03/2018] [Accepted: 10/03/2018] [Indexed: 12/20/2022]
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Gatiatulin AK, Osel'skaya VY, Ziganshin MA, Gorbatchuk VV. Smart control of guest inclusion by α-cyclodextrin using its hydration history. RSC Adv 2019; 9:37778-37787. [PMID: 35541818 PMCID: PMC9075746 DOI: 10.1039/c9ra08710a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Accepted: 11/11/2019] [Indexed: 12/13/2022] Open
Abstract
Hydration history was found to control the inclusion capacity of α-cyclodextrin (aCD) for volatile organic guests, so that its level may be switched from zero to the stoichiometric value and back by the variation of aCD hydration/dehydration order and direction. Such variation of the inclusion capacity is caused by the balance of two water roles: the activation of guest inclusion and guest/water competition. These observed concurrent roles and the cooperativity of guest inclusion and hydration make possible the smart tuning of the guest inclusion by the subtle change of preparation procedure. Depending on the hydration history, aCD was shown to form hydrates with the same water contents but different packing types and different kinetics of dehydration, which correlates with their different inclusion capacities for organic guests. This correlation reveals how the “high-energy” and “low-energy” water works in the guest inclusion by aCD, which may be relevant for other cyclodextrins and hydrophilic receptors of biomimetic and biological natures. The results can help to rationalize the technologies of producing various inclusion compounds of cyclodextrins. The hydration level and hydration history of alpha-cyclodextrin significantly affects its structure and inclusion capacity for organic guests.![]()
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Affiliation(s)
- Askar K. Gatiatulin
- A. M. Butlerov Institute of Chemistry
- Kazan Federal University
- Kazan 420008
- Russia
| | | | - Marat A. Ziganshin
- A. M. Butlerov Institute of Chemistry
- Kazan Federal University
- Kazan 420008
- Russia
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Wang S, Hou Y, Zhang S, Li J, Chen Q, Yu M, Li W. Sustained antibacterial activity of berberine hydrochloride loaded supramolecular organoclay networks with hydrogen-bonding junctions. J Mater Chem B 2018; 6:4972-4984. [PMID: 32255069 DOI: 10.1039/c8tb01018h] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The environmental risk from antibiotics is an issue of increasing concern. So, carboxymethyl β-cyclodextrin-functionalized montmorillonite nanosheets were for the first time successfully synthesized through a cheap, environmentally friendly and scalable approach and confirmed by FTIR, XRD and TGA. FE-SEM investigation showed that the resulting functional material could be further self-assembled into dense supramolecular organoclay networks (D-networks). The antibacterial properties of the D-networks loaded with natural berberine hydrochloride (BBH) were investigated toward E. coli and S. aureus by using colony growth on agar plates, bacterial growth curves based on optical densities, and confocal and fluorescence microscopy. Our studies demonstrated that the BBH loaded D-network antibacterial activity was concentration dependent and significantly exceeded that of free BBH. FE-SEM observation confirmed that E. coli and S. aureus can directly contact the D-networks and confocal and fluorescence microscopy showed that free BBH was only very poorly internalized, while the BBH released from the BBH-loaded D-network could be internalized efficiently into bacterial cells, resulting in an increment of the intracellular BBH level compared with the free BBH group. Time-dependent antibacterial activity was observed and it was found that the BBH-loaded D-network dispersion at the BBH dosage of 600 μg mL-1 almost completely suppressed the growth of E. coli, leading to a viability loss of up to 98.45 ± 1.22%, while the BBH-loaded D-network dispersion at the BBH concentration of 250 μg mL-1 exhibited a growth inhibition of 97.81 ± 0.83% toward S. aureus over three days. Our results suggest that supramolecular organoclay networks, in the future, may function as promising antibacterial drug carrier systems to promote BBH delivery in E. coli and S. aureus, which can reduce the environmental risk of antibiotics.
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Affiliation(s)
- Shiwei Wang
- Department of Medicinal Chemistry, School of Pharmacy, Chongqing Medical University, Chongqing 400016, P. R. China.
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Gebhardt J, Kleist C, Jakobtorweihen S, Hansen N. Validation and Comparison of Force Fields for Native Cyclodextrins in Aqueous Solution. J Phys Chem B 2018; 122:1608-1626. [PMID: 29287148 DOI: 10.1021/acs.jpcb.7b11808] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Molecular dynamics simulations of native α-, β-, and γ-cyclodextrin in aqueous solution have been conducted with the goal to investigate the performance of the CHARMM36 force field, the AMBER-compatible q4md-CD force field, and five variants of the GROMOS force field. The properties analyzed are structural parameters derived from X-ray diffraction and NMR experiments as well as hydrogen bonds and hydration patterns, including hydration free enthalpies. Recent revisions of the torsional-angle parameters for carbohydrate systems within the GROMOS family of force fields lead to a significant improvement of the agreement between simulated and experimental NMR data. Therefore, we recommend using the variant 53A6GLYC instead of 53A6 and 56A6CARBO_R or 2016H66 instead of 56A6CARBO to simulate cyclodextrins in solution. The CHARMM36 and q4md-CD force fields show a similar performance as the three recommended GROMOS parameter sets. A significant difference is the more flexible nature of the cyclodextrins modeled with the CHARMM36 and q4md-CD force fields compared to the three recommended GROMOS parameter sets.
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Affiliation(s)
- Julia Gebhardt
- Institute of Thermodynamics and Thermal Process Engineering, University of Stuttgart , D-70569 Stuttgart, Germany
| | - Catharina Kleist
- Institute of Thermal Separation Processes, Hamburg University of Technology , D-21073 Hamburg, Germany
| | - Sven Jakobtorweihen
- Institute of Thermal Separation Processes, Hamburg University of Technology , D-21073 Hamburg, Germany
| | - Niels Hansen
- Institute of Thermodynamics and Thermal Process Engineering, University of Stuttgart , D-70569 Stuttgart, Germany
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