1
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Yang J, Yin B, Zhang S, Sun Y, Li J, Su D, Ma T. Macromolecules Promoting Robust Zinc Anode by Synergistic Coordination Effect and Charge Redistribution. Small 2023; 19:e2304913. [PMID: 37434105 DOI: 10.1002/smll.202304913] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Revised: 06/30/2023] [Indexed: 07/13/2023]
Abstract
Zn dendrite formation is the main obstacle to commercializing aqueous zinc-ion batteries (ZIBs). α-cyclodextrin (α-CD) is proposed as an environmentally friendly macromolecule additive in the ZnSO4 -based electrolyte to obtain stable and reversible Zn anodes. The results show that α-CD molecules' unique 3D structure can effectively regulate the mass transfer of the electrolyte components and isolate the Zn anode from H2 O molecules. The α-CD provides abundant electrons to the Zn (002) crystallographic plane, which induces charge density redistribution. Such an effect relieves the reduction and aggregation of Zn2+ cations while protecting the Zn metal anode from water molecules. Finally, a small amount of α-CD additive (0.01 M) can enhance the performance of Zn significantly in Zn||Cu cells (1980 cycles with 99.45% average CE) and Zn||Zn cells (8000 h ultra-long cycle life). The excellent practical applicability was further verified in Zn||MnO2 cells.
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Affiliation(s)
- Jinzhang Yang
- Institute of Clean Energy Chemistry, Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Material, College of Chemistry, Liaoning University, Shenyang, 110036, P. R. China
| | - Bosi Yin
- Institute of Clean Energy Chemistry, Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Material, College of Chemistry, Liaoning University, Shenyang, 110036, P. R. China
| | - Siwen Zhang
- Institute of Clean Energy Chemistry, Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Material, College of Chemistry, Liaoning University, Shenyang, 110036, P. R. China
| | - Ying Sun
- Institute of Clean Energy Chemistry, Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Material, College of Chemistry, Liaoning University, Shenyang, 110036, P. R. China
| | - Jiazhuo Li
- Institute of Clean Energy Chemistry, Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Material, College of Chemistry, Liaoning University, Shenyang, 110036, P. R. China
| | - Dawei Su
- School of Mathematical and Physical Sciences, Faculty of Science, University of Technology Sydney, Sydney, NSW, 2007, Australia
| | - Tianyi Ma
- School of Science, RMIT University, Melbourne, VIC, 3000, Australia
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2
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Komatsu H, Watanabe S, Ito S, Nagasaka K, Nishiguchi A, Taguchi T. Improved Swelling Property of Tissue Adhesive Hydrogels Based on α-Cyclodextrin/Decyl Group-Modified Alaska Pollock Gelatin Inclusion Complexes. Macromol Biosci 2023; 23:e2300097. [PMID: 37102468 DOI: 10.1002/mabi.202300097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 04/06/2023] [Indexed: 04/28/2023]
Abstract
Adhesives/sealants are used after suturing to prevent leakage of cerebrospinal fluid from an anastomotic site. Commercial adhesives/sealants have been used to close the cerebral dura. However, swelling of the cured adhesives/sealants induces increased intracranial pressure and decreases the strength of the seal. In the present study, tissue adhesive hydrogels with improved swelling property using inclusion complex composed of α-cyclodextrin (αCD) and decyl group (C10)-modified Alaska pollock-derived gelatin (C10-ApGltn) with a high degree of substitution (DS) (>20 mol%) are developed. Viscosity of C10-ApGltn with a high DS solution remarkably decreased by the addition of αCD. The resulting αCD/C10-ApGltn adhesive hydrogel composed of αCD/C10-ApGltn inclusion complexes and poly(ethylene glycol) (PEG)-based crosslinker showed improved swelling property after immersion in saline. Also, the resulting adhesive has a significantly higher burst strength than fibrin-based adhesives and is as strong as a PEG-based adhesive. Quantitative analysis of αCD revealed that the improved swelling property of the resulting adhesive hydrogels is induced by the release of αCD from cured adhesive, and the subsequent assembly of decyl groups in the saline. These results suggest that adhesives developed using the αCD/C10-ApGltn inclusion complex can be useful for closing the cerebral dura mater.
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Affiliation(s)
- Hiyori Komatsu
- Graduate School of Science and Technology, Degree Programs in Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8577, Japan
- Biomaterials Field, Research Center for Macromolecules and Biomaterials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Shiharu Watanabe
- Biomaterials Field, Research Center for Macromolecules and Biomaterials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Shima Ito
- Graduate School of Science and Technology, Degree Programs in Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8577, Japan
- Biomaterials Field, Research Center for Macromolecules and Biomaterials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Kazuhiro Nagasaka
- Graduate School of Science and Technology, Degree Programs in Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8577, Japan
- Biomaterials Field, Research Center for Macromolecules and Biomaterials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Akihiro Nishiguchi
- Biomaterials Field, Research Center for Macromolecules and Biomaterials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Tetsushi Taguchi
- Graduate School of Science and Technology, Degree Programs in Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8577, Japan
- Biomaterials Field, Research Center for Macromolecules and Biomaterials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
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Crivello G, Orlandini G, Morena AG, Torchio A, Mattu C, Boffito M, Tzanov T, Ciardelli G. Lignin-Cobalt Nano-Enabled Poly(pseudo)rotaxane Supramolecular Hydrogel for Treating Chronic Wounds. Pharmaceutics 2023; 15:1717. [PMID: 37376166 DOI: 10.3390/pharmaceutics15061717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 06/08/2023] [Accepted: 06/09/2023] [Indexed: 06/29/2023] Open
Abstract
Chronic wounds (CWs) are a growing issue for the health care system. Their treatment requires a synergic approach to reduce both inflammation and the bacterial burden. In this work, a promising system for treating CWs was developed, comprising cobalt-lignin nanoparticles (NPs) embedded in a supramolecular (SM) hydrogel. First, NPs were obtained through cobalt reduction with phenolated lignin, and their antibacterial properties were tested against both Gram-negative and Gram-positive strains. The anti-inflammatory capacity of the NPs was proven through their ability to inhibit myeloperoxidase (MPO) and matrix metalloproteases (MMPs), which are enzymes involved in the inflammatory process and wound chronicity. Then, the NPs were loaded in an SM hydrogel based on a blend of α-cyclodextrin and custom-made poly(ether urethane)s. The nano-enabled hydrogel showed injectability, self-healing properties, and linear release of the loaded cargo. Moreover, the SM hydrogel's characteristics were optimized to absorb proteins when in contact with liquid, suggesting its capacity to uptake harmful enzymes from the wound exudate. These results render the developed multifunctional SM material an interesting candidate for the management of CWs.
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Affiliation(s)
- Giulia Crivello
- Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
| | - Giuliana Orlandini
- Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
| | - Angela Gala Morena
- Group of Molecular and Industrial Biotechnology, Department of Chemical Engineering, Universitat Politècnica de Catalunya, 08222 Terrassa, Spain
| | - Alessandro Torchio
- Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
| | - Clara Mattu
- Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
| | - Monica Boffito
- Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
| | - Tzanko Tzanov
- Group of Molecular and Industrial Biotechnology, Department of Chemical Engineering, Universitat Politècnica de Catalunya, 08222 Terrassa, Spain
| | - Gianluca Ciardelli
- Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
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Tannous M, Hoti G, Trotta F, Cavalli R, Higashiyama T, Pagliaro P, Penna C. Oxygen Nanocarriers for Improving Cardioplegic Solution Performance: Physico-Chemical Characterization. Int J Mol Sci 2023; 24:10073. [PMID: 37373223 DOI: 10.3390/ijms241210073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 06/08/2023] [Accepted: 06/08/2023] [Indexed: 06/29/2023] Open
Abstract
Nanocarriers for oxygen delivery have been the focus of extensive research to ameliorate the therapeutic effects of current anti-cancer treatments and in the organ transplant field. In the latter application, the use of oxygenated cardioplegic solution (CS) during cardiac arrest is certainly beneficial, and fully oxygenated crystalloid solutions may be excellent means of myocardial protection, albeit for a limited time. Therefore, to overcome this drawback, oxygenated nanosponges (NSs) that can store and slowly release oxygen over a controlled period have been chosen as nanocarriers to enhance the functionality of cardioplegic solutions. Different components can be used to prepare nanocarrier formulations for saturated oxygen delivery, and these include native α-cyclodextrin (αCD), αcyclodextrin-based nanosponges (αCD-NSs), native cyclic nigerosyl-nigerose (CNN), and cyclic nigerosyl-nigerose-based nanosponges (CNN-NSs). Oxygen release kinetics varied depending on the nanocarrier used, demonstrating higher oxygen release after 24 h for NSs than the native αCD and CNN. CNN-NSs presented the highest oxygen concentration (8.57 mg/L) in the National Institutes of Health (NIH) CS recorded at 37 °C for 12 h. The NSs retained more oxygen at 1.30 g/L than 0.13 g/L. These nanocarriers have considerable versatility and the ability to store oxygen and prolong the amount of time that the heart remains in hypothermic CS. The physicochemical characterization presents a promising oxygen-carrier formulation that can prolong the release of oxygen at low temperatures. This can make the nanocarriers suitable for the storage of hearts during the explant and transport procedure.
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Affiliation(s)
- Maria Tannous
- Department of Chemistry, University of Turin, 10125 Turin, Italy
- Department of Drug Science and Technology, University of Turin, 10125 Turin, Italy
- Department of Clinical and Biological Sciences, University of Turin, 10043 Orbassano, Italy
| | - Gjylije Hoti
- Department of Chemistry, University of Turin, 10125 Turin, Italy
| | - Francesco Trotta
- Department of Chemistry, University of Turin, 10125 Turin, Italy
| | - Roberta Cavalli
- Department of Drug Science and Technology, University of Turin, 10125 Turin, Italy
| | | | - Pasquale Pagliaro
- Department of Clinical and Biological Sciences, University of Turin, 10043 Orbassano, Italy
| | - Claudia Penna
- Department of Clinical and Biological Sciences, University of Turin, 10043 Orbassano, Italy
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5
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Lambert C, Lemagnen P, Don Simoni E, Hubert J, Kotland A, Paulus C, De Bizemont A, Bernard S, Humeau A, Auriol D, Reynaud R. Enzymatic Synthesis of α-Glucosyl-Baicalin through Transglucosylation via Cyclodextrin Glucanotransferase in Water. Molecules 2023; 28:molecules28093891. [PMID: 37175300 PMCID: PMC10180260 DOI: 10.3390/molecules28093891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 04/27/2023] [Accepted: 04/28/2023] [Indexed: 05/15/2023] Open
Abstract
Baicalin is a biologically active flavone glucuronide with poor water solubility that can be enhanced via glucosylation. In this study, the transglucosylation of baicalin was successfully achieved with CGTases from Thermoanaerobacter sp. and Bacillus macerans using α-cyclodextrin as a glucosyl donor. The synthesis of baicalin glucosides was optimized with CGTase from Thermoanaerobacter sp. Enzymatically modified baicalin derivatives were α-glucosylated with 1 to 17 glucose moieties. The two main glucosides were identified as Baicalein-7-O-α-D-Glucuronidyl-(1→4')-O-α-D-Glucopyranoside (BG1) and Baicalein-7-O-α-D-Glucuronidyl-(1→4')-O-α-D-Maltoside (BG2), thereby confirming recent findings reporting that glucuronyl groups are acceptors of this CGTase. Optimized conditions allowed for the attainment of yields above 85% (with a total glucoside content higher than 30 mM). BG1 and BG2 were purified via centrifugal partition chromatography after an enrichment through deglucosylation with amyloglucosidase. Transglucosylation increased the water solubility of BG1 by a factor of 188 in comparison to that of baicalin (molar concentrations), while the same value for BG2 was increased by a factor of 320. Finally, BG1 and BG2 were evaluated using antioxidant and anti-glycation assays. Both glucosides presented antioxidant and anti-glycation properties in the same order of magnitude as that of baicalin, thereby indicating their potential biological activity.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Anne Humeau
- Givaudan France SAS, 22560 Pleumeur-Bodou, France
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6
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Terukina T, Tanaka J, Takayama Y, Osanai K, Kino S, Kanazawa T, Kondo H. Sangelose-based gels and films: effects of glycerol and α-cyclodextrin and their pharmaceutical application. Drug Dev Ind Pharm 2023; 49:75-83. [PMID: 36803493 DOI: 10.1080/03639045.2023.2182127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
OBJECTIVE To evaluate the possible application of Sangelose as an alternative to gelatin and carrageenan for the development of film substrates, and to examine the effect of glycerol and α-cyclodextrin (α-CyD) on the viscoelastic properties of Sangelose-based gels and the physical properties of the films. SIGNIFICANCE Sangelose-based gels/films can serve as a potential viable alternative to gelatin and carrageenan in pharmaceutical applications. METHODS Glycerol (a plasticizer) and α-CyD (a functional additive) were added to Sangelose, and gels and films were prepared. The gels were evaluated by dynamic viscoelasticity measurements, and the films were evaluated by scanning electron microscopy, Fourier-transform infrared spectroscopy, tensile tests, and contact angle measurements. Soft capsules were prepared using the formulated gels. RESULTS The strength of the gels was affected when only glycerol was added to Sangelose and α-CyD addition resulted in rigid gels. However, the addition of α-CyD with 10% glycerol weakened the gels. Tensile tests suggested that glycerol addition affected the formability and malleability of the films, while α-CyD addition affected their formability and elongation properties. The addition of 10% glycerol and α-CyD did not affect the flexibility of the films, suggesting that the malleability and strength were impacted. Soft capsules could not be prepared by adding only glycerol or α-CyD to Sangelose. Soft capsules with favorable disintegration behavior were obtained upon adding α-CyD to gels along with 10% glycerol. CONCLUSIONS Sangelose combined with a suitable amount of glycerol and α-CyD has preferable characteristics for film formation and may have potential applications in the pharmaceutical and health food sectors.
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Affiliation(s)
- Takayuki Terukina
- Department of Pharmaceutical Engineering and Drug Delivery Sciences, Graduate School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, Japan
| | - Jun Tanaka
- Department of Pharmaceutical Engineering and Drug Delivery Sciences, Graduate School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, Japan
| | - Yumi Takayama
- Department of Pharmaceutical Engineering and Drug Delivery Sciences, Graduate School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, Japan
| | - Kaede Osanai
- Department of Pharmaceutical Engineering and Drug Delivery Sciences, Graduate School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, Japan
| | - Shusuke Kino
- Department of Pharmaceutical Engineering and Drug Delivery Sciences, Graduate School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, Japan
| | - Takanori Kanazawa
- Department of Pharmaceutical Engineering and Drug Delivery Sciences, Graduate School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, Japan
| | - Hiromu Kondo
- Department of Pharmaceutical Engineering and Drug Delivery Sciences, Graduate School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, Japan
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Domiński A, Konieczny T, Godzierz M, Musioł M, Janeczek H, Foryś A, Domińska M, Pastuch-Gawołek G, Piotrowski T, Kurcok P. Co-Delivery of 8-Hydroxyquinoline Glycoconjugates and Doxorubicin by Supramolecular Hydrogel Based on α-Cyclodextrin and pH-Responsive Micelles for Enhanced Tumor Treatment. Pharmaceutics 2022; 14. [PMID: 36432680 DOI: 10.3390/pharmaceutics14112490] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 11/03/2022] [Accepted: 11/14/2022] [Indexed: 11/19/2022] Open
Abstract
The sustained release of multiple anti-cancer drugs using a single delivery carrier to achieve a synergistic antitumor effect remains challenging in biomaterials and pharmaceutics science. In this study, a supramolecular hydrogel based on the host-guest complexes between pH-responsive micelle derived poly(ethylene glycol) chains and α-cyclodextrin was designed for codelivery of two kinds of anti-cancer agents, hydrophilic 8-hydroxyquinoline glycoconjugate and hydrophobic doxorubicin. The host-guest interactions were characterized using X-ray diffraction and differential scanning calorimetry techniques. The resultant supramolecular hydrogel showed thixotropic properties, which are advantageous to drug delivery systems. In vitro release studies revealed that the supramolecular hydrogel exhibited faster drug release profiles in acidic conditions. The MTT assay demonstrated a synergistic cancer cell proliferation inhibition of DOX/8HQ-Glu mixture. In vitro cytotoxicity studies indicated excellent biocompatibility of the supramolecular hydrogel matrix, whereas the DOX/8HQ-Glu-loaded supramolecular hydrogel showed a sustained inhibition efficacy against cancer cells. The codelivery of hydrophobic anti-cancer drugs and hydrophilic anti-cancer drug glycoconjugates via a pH-responsive supramolecular hydrogel opens up new possibilities for the development of an effective cancer treatment based on the tumor-specific Warburg effect.
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Wu H, Ao X, Liu J, Zhu J, Bi J, Hou H, Hao H, Zhang G. Functional Chitosan-Based Composite Film Incorporated with 3-(Methylthio) Propyl Isothiocyanate/ α-Cyclodextrin Inclusion Complex for Chicken Meat Preservation. Polymers (Basel) 2022; 14:polym14214655. [PMID: 36365646 PMCID: PMC9658049 DOI: 10.3390/polym14214655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Revised: 10/26/2022] [Accepted: 10/27/2022] [Indexed: 11/06/2022] Open
Abstract
The 3-(Methylthio) propyl isothiocyanate (MTPITC)-loaded inclusion complex prepared by α-cyclodextrin (α-CD) was incorporated into chitosan (CS) film to fabricate a packaging material for fresh chicken meat preservation. Scanning electron microscope images indicated homogenous dispersion of the MTPITC-α-CD in CS polymer. Fourier-transform infrared and X-ray diffraction techniques revealed that MTPITC-α-CD was incorporated into the CS film matrix by the physical interactions. The introduction of MTPITC-α-CD improved the UV-vis light-blocking ability, with a slight loss of transparency. Although the water solubility and water vapor barrier capacity were not significantly influenced by the addition of MTPITC-α-CD, the antioxidant attribute was significantly enhanced. The CS-MTPITC-α-CD film displayed obvious and sustained suppressive effects against Salmonella typhimurium, with the inhibition zone diameters of 14.7 mm at 12 h and 7.3 mm at 24 h, respectively. Moreover, the quality index analysis indicated that the CS-MTPITC-α-CD film-wrapped fresh chicken, during refrigerated storage, exhibited better preservative efficacy than the control groups, with the total viable counts of 6.5 Log CFU/g, total volatile base nitrogen of 8.4 mg/100 g, pH of 6.6, thiobarbituric acid-reactive substances of 0.2 mg/kg, and the sensory score of 5 at day 16. Collectively, these results suggest that CS-MTPITC-α-CD film is a prospective packaging candidate for delaying the quality deterioration of chicken meat.
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Affiliation(s)
- Hongyan Wu
- School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China
- Liaoning Key Laboratory for Aquatic Processing Quality and Safety, Dalian 116034, China
| | - Xinying Ao
- School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China
| | - Jianan Liu
- School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China
| | - Junya Zhu
- Jinkui Food Science and Technology Corporation, Dalian 116033, China
| | - Jingran Bi
- School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China
- Liaoning Key Laboratory for Aquatic Processing Quality and Safety, Dalian 116034, China
| | - Hongman Hou
- School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China
- Liaoning Key Laboratory for Aquatic Processing Quality and Safety, Dalian 116034, China
| | - Hongshun Hao
- Department of Inorganic Nonmetallic Materials Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Gongliang Zhang
- School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China
- Liaoning Key Laboratory for Aquatic Processing Quality and Safety, Dalian 116034, China
- Correspondence: ; Tel.: +86-411-8632-2020
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Kinart Z, Tomaš R. Studies of the Formation of Inclusion Complexes Derivatives of Cinnamon Acid with α-Cyclodextrin in a Wide Range of Temperatures Using Conductometric Methods. Molecules 2022; 27:molecules27144420. [PMID: 35889293 PMCID: PMC9318531 DOI: 10.3390/molecules27144420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 07/07/2022] [Accepted: 07/08/2022] [Indexed: 11/16/2022]
Abstract
The electrical conductivities of aqueous solutions of sodium salts of trans-4-hydroxycinnamic acid (trans-p-coumaric acid), trans-3,4-dihydroxycinnamic acid (trans-caffeic acid), trans-4-hydroxy-3-methoxycinnamic acid, (trans-ferulic acid) and trans-3-phenylacrylic acid (trans-cinnamic acid) with α-cyclodextrin were measured in the temperature range of 288.15 K–318.15 K. For the first time in the literature, using the limiting molar conductivity (Λmo) obtained from conductivity measurements, the values of the complexation constants (Kf) of the salts of phenolic acid derivatives with α-cyclodextrin were determined using a modified low concentration chemical model (IcCM). An attempt was also made to analyze the individual thermodynamic functions ΔGo, ΔHo and ΔSo describing the complexation process as a function of temperature changes. The obtained results show that the process of formation of inclusion complexes is exothermic and is spontaneous.
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Affiliation(s)
- Zdzisław Kinart
- Department of Physical Chemistry, Faculty of Chemistry, University of Lodz, Pomorska 163/165, 90-236 Lodz, Poland
- Correspondence:
| | - Renato Tomaš
- Department of Physical Chemistry, University of Split, Ruđera Boškovića 35, HR-21000 Split, Croatia;
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Stergiou A, Binou P, Igoumenidis PE, Chiou A, Yannakopoulou K, Karathanos VΤ. Host-guest inclusion complexes of hydroxytyrosol with cyclodextrins: Development of a potential functional ingredient for food application. J Food Sci 2022; 87:2678-2691. [PMID: 35534089 DOI: 10.1111/1750-3841.16165] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 03/31/2022] [Accepted: 04/07/2022] [Indexed: 12/11/2022]
Abstract
Hydroxytyrosol (HT), a potent phenolic phytochemical, exerts positive health effects due to its antioxidant properties. However, it is highly reactive to oxygen, light, and heat and presents high instability. Alpha- and beta-cyclodextrin (α-CD, β-CD) have structures that allow them to encapsulate a variety of hydrophobic molecules. The aim of this study was to examine the outcomes of the inclusion of HT into α-CD and β-CD. Aqueous solutions of HT and either α-CD or β-CD were prepared and freeze-drying was applied for the encapsulation, in 1:1 and 2:1 molar ratios. The produced solid complexes were studied and characterized using NMR spectroscopy, differential scanning calorimetry (DSC) and attenuated total reflection-Fourier transform infrared spectroscopy (ATR-FTIR). Encapsulation efficiency (EE%), stability, and in vitro release of the encapsulated complexes under simulated digestion conditions were also evaluated. In both DSC thermograms and FTIR spectra of the inclusion complexes, absence of the characteristic peaks of HT and shifts of the CDs peaks were observed, showing an interaction between the molecules. NMR suggested a stronger complex formed between β-CD and HT. The EE% of β-CD/HT (1:1 and 2:1) complexes and α-CD/HT (1:1) complex was found to be higher (83%, 76%, 78%, respectively), compared to α-CD/HT (2:1) (51%). Data obtained support the encapsulation of HT in both CDs, revealing a potential interaction between them and an improvement in HT's thermal stability. Regarding the in vitro release study, both CD complexes had similar behavior and a controlled release of HT in the intestinal site was observed. PRACTICAL APPLICATION: The encapsulation of hydroxytyrosol in cyclodextrins resulted in white amorphous food-grade powders with no aroma and taste. Incorporation of these powders in foods could lead to an increase in their antioxidant content and offer an additional nutritional value.
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Affiliation(s)
- Athena Stergiou
- Laboratory of Chemistry-Biochemistry-Physical Chemistry of Foods, Department of Nutrition and Dietetics, Harokopio University of Athens, Athens, Greece
| | - Panagiota Binou
- Laboratory of Chemistry-Biochemistry-Physical Chemistry of Foods, Department of Nutrition and Dietetics, Harokopio University of Athens, Athens, Greece
| | | | - Antonia Chiou
- Laboratory of Chemistry-Biochemistry-Physical Chemistry of Foods, Department of Nutrition and Dietetics, Harokopio University of Athens, Athens, Greece
| | | | - Vaios Τ Karathanos
- Laboratory of Chemistry-Biochemistry-Physical Chemistry of Foods, Department of Nutrition and Dietetics, Harokopio University of Athens, Athens, Greece
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11
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Zhi W, Pu Z, Ma C, Liu K, Wang X, Huang J, Xiao Y, Yan Y. α-Cyclodextrin-Catalyzed Symmetry Breaking and Precise Regulation of Supramolecular Self-Assembly Handedness with Harata-Kodaka's Rule. ACS Nano 2021; 15:19621-19628. [PMID: 34709028 DOI: 10.1021/acsnano.1c06766] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Harata-Kodaka's rule predicting the induced chirality of the guest molecules by cyclodextrins has been discovered in the 1970-1990s, yet its ability to control the supramolecular handedness of self-assembled structures has not been sufficiently recognized. Here we show that in a coordinating self-assembly system that is able to form racemic cone shells symmetry breaking occurs if the ligand is prethreaded into α-cyclodextrin prior to metal ion addition, and the handedness of cone shells can be rationally manipulated by creating the two scenarios of the Harata-Kadaka rule through controlling the host-guest dynamics. Since the coordination complexes have strong self-assembling ability, the coordinating ligand would dethread from the cavity of α-cyclodextrin but leaving the induced chirality to the coordinating self-assembly, thus catalyzing symmetry breaking. This work reveals that the dynamic factors such as concentration and molar ratio may play important roles in symmetry breaking at the supramolecular level. The current strategy provides a promising method for the symmetry breaking and manipulation of the handedness of self-assembled materials formed by achiral molecules.
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Affiliation(s)
- Wanwan Zhi
- Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
| | - Zhichen Pu
- Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
| | - Cheng Ma
- Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
| | - Kaerdun Liu
- Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
| | - Xuejiao Wang
- Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
| | - Jianbin Huang
- Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
| | - Yunlong Xiao
- Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
| | - Yun Yan
- Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
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12
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Decarpigny C, Ponchel A, Monflier E, Bleta R. Effect of Functional Group on the Catalytic Activity of Lipase B from Candida antarctica Immobilized in a Silica-Reinforced Pluronic F127/ α-Cyclodextrin Hydrogel. Gels 2021; 8:3. [PMID: 35049538 PMCID: PMC8775079 DOI: 10.3390/gels8010003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 12/13/2021] [Accepted: 12/16/2021] [Indexed: 12/03/2022] Open
Abstract
Surface modification plays a key role in the fabrication of highly active and stable enzymatic nanoreactors. In this study, we report for the first time the effect of various functional groups (epoxy, amine, trimethyl, and hexadecyl) on the catalytic performance of lipase B from Candida antarctica (CALB) incorporated within a monolithic supramolecular hydrogel with multiscale pore architecture. The supramolecular hydrogel formed by host-guest interactions between α-cyclodextrin (α-CD) and Pluronic F127 was first silicified to provide a hierarchically porous material whose surface was further modified with different organosilanes permitting both covalent anchoring and interfacial activation of CALB. The catalytic activity of nanoreactors was evaluated in the liquid phase cascade oxidation of 2,5-diformylfuran (DFF) to 2,5-furandicarboxylic acid (FDCA) under mild conditions. Results showed that high FDCA yields and high efficiency conversion of DFF could be correlated with the ability of epoxy and amine moieties to keep CALB attached to the carrier, while the trimethyl and hexadecyl groups could provide a suitable hydrophobic-hydrophilic interface for the interfacial activation of lipase. Cationic cross-linked β-CD was also evaluated as an enzyme-stabilizing agent and was found to provide beneficial effects in the operational stability of the biocatalyst. These supramolecular silicified hydrogel monoliths with hierarchical porosity may be used as promising nanoreactors to provide easier enzyme recovery in other biocatalytic continuous flow processes.
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Affiliation(s)
| | | | | | - Rudina Bleta
- University of Artois, CNRS, Centrale Lille, ENSCL, Univ. Lille, UMR 8181-UCCS-Unité de Catalyse et Chimie du Solide, F-62300 Lens, France; (C.D.); (A.P.); (E.M.)
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13
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Penna C, Trotta F, Cavalli R, Pagliaro P. Nanocarriers Loaded with Oxygen to Improve the Protection of the Heart to be Transplanted. Curr Pharm Des 2021; 28:468-470. [PMID: 34751111 DOI: 10.2174/1381612827666211109112723] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 10/13/2021] [Indexed: 11/22/2022]
Abstract
In the case of serious cardiovascular diseases, such as refractory heart failure, heart transplantation is the only possible intervention. Currently, the modes of organ transport in hypothermic cardioplegic solution do not allow the implantation of the heart beyond 4-5 hours from the explant. The heart being an organ with a greater consumption of oxygen and high metabolism than the brain, its transport in hypothermic cardioplegic solutions presents critical issues in terms of time and conservation. An ambitious goal of many researchers and clinicians is to minimize the hypoxia of the explanted heart and extend the permanence time in cardioplegic solution without damage from hypoxia. Adequately oxygenating the explanted organs may extend the usability time of the explanted organ. This challenge has been pursued for years with approaches that are often expensive, risky, and/or difficult to use. We propose to consider oxygenated nanocarriers realizing oxygen for a long time. In this way, it will also be possible to use organs from distant countries with respect to the recipient, thus exceeding the canonical 4-5 hours tolerated up to now. In addition to the lack of oxygen, the transplanted organ can undergo the accumulation of catabolites due to the lack of perfusion during transport. Therefore, nanocarriers can also be perfused in adequate solution during organ transportation. A better oxygenation improving the postoperative recovery of the transplanted heart will improve the recipient's quality of life.
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Affiliation(s)
- Claudia Penna
- Department of Clinical and Biological Sciences, University of Turin, 10043 Turin. Italy
| | - Francesco Trotta
- Department of Chemistry, University of Turin, 10125 Turin. Italy
| | - Roberta Cavalli
- Department of Drug Science and Technology, University of Turin, 10125 Turin. Italy
| | - Pasquale Pagliaro
- Department of Clinical and Biological Sciences, University of Turin, 10043 Turin. Italy
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14
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Lee E, Zhang X, Noda T, Miyamoto J, Kimura I, Tanaka T, Sakurai K, Hatano R, Miki T. Lecithin Inclusion by α-Cyclodextrin Activates SREBP2 Signaling in the Gut and Ameliorates Postprandial Hyperglycemia. Int J Mol Sci 2021; 22:ijms221910796. [PMID: 34639136 PMCID: PMC8509185 DOI: 10.3390/ijms221910796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 09/25/2021] [Accepted: 09/29/2021] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND α-cyclodextrin (α-CD) is one of the dietary fibers that may have a beneficial effect on cholesterol and/or glucose metabolism, but its efficacy and mode of action remain unclear. METHODS In the present study, we examined the anti-hyperglycemic effect of α-CD after oral loading of glucose and liquid meal in mice. RESULTS Administration of 2 g/kg α-CD suppressed hyperglycemia after glucose loading, which was associated with increased glucagon-like peptide 1 (GLP-1) secretion and enhanced hepatic glucose sequestration. By contrast, 1 g/kg α-CD similarly suppressed hyperglycemia, but without increasing secretions of GLP-1 and insulin. Furthermore, oral α-CD administration disrupts lipid micelle formation through its inclusion of lecithin in the gut luminal fluid. Importantly, prior inclusion of α-CD with lecithin in vitro nullified the anti-hyperglycemic effect of α-CD in vivo, which was associated with increased intestinal mRNA expressions of SREBP2-target genes (Ldlr, Hmgcr, Pcsk9, and Srebp2). CONCLUSIONS α-CD elicits its anti-hyperglycemic effect after glucose loading by inducing lecithin inclusion in the gut lumen and activating SREBP2, which is known to induce cholecystokinin secretion to suppress hepatic glucose production via a gut/brain/liver axis.
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Affiliation(s)
- Eunyoung Lee
- Department of Medical Physiology, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan; (E.L.); (X.Z.); (T.N.); (R.H.)
| | - Xilin Zhang
- Department of Medical Physiology, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan; (E.L.); (X.Z.); (T.N.); (R.H.)
| | - Tomoe Noda
- Department of Medical Physiology, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan; (E.L.); (X.Z.); (T.N.); (R.H.)
| | - Junki Miyamoto
- Department of Applied Biological Science, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, Fuchu 183-8509, Japan;
| | - Ikuo Kimura
- Laboratory of Molecular Neurobiology, Graduate School of Biostudies, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan;
| | - Tomoaki Tanaka
- Department of Molecular Diagnosis, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan;
| | - Kenichi Sakurai
- Center for Preventive Medical Sciences, Chiba University, Chiba 263-8522, Japan;
| | - Ryo Hatano
- Department of Medical Physiology, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan; (E.L.); (X.Z.); (T.N.); (R.H.)
| | - Takashi Miki
- Department of Medical Physiology, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan; (E.L.); (X.Z.); (T.N.); (R.H.)
- Correspondence: ; Tel.: +81-43-226-2029
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15
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Zhou Y, Feng J, Peng H, Guo T, Xiao J, Zhu W, Qian W, Zhang J, Wu L. Allicin inclusions with α-cyclodextrin effectively masking its odor: Preparation, characterization, and olfactory and gustatory evaluation. J Food Sci 2021; 86:4026-4036. [PMID: 34409609 DOI: 10.1111/1750-3841.15882] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 07/03/2021] [Accepted: 07/20/2021] [Indexed: 11/29/2022]
Abstract
Allicin, a chemical found in functional foods, has a variety of beneficial bioactivities but the unpleasent odor and unstability hinder its applications. Isolating products from cyclodextrin (CD) complexation, using β-CD and its derivatives, is usually a time and energy-consuming process. Herein, a high-efficiency and eco-friendly preparation method of an inclusion (allicin@α-CD) formed by allicin and α-CD was designed, which turned liquid allicin into crystal particles with high-speed stirring (10,000 r/min) at 25°C for 10 min in water. In vivo and in vitro masking evaluations showed that the inclusion particles could decrease the unpleasant odor of allicin. Molecular docking and experimental characterization results illustrated that the main reason of odor masking was due to the disulfide and thiocarbonyl groups of allicin being partially encapsulated by the cavity of α-CD. Compared with the physical mixture, the stability of allicin in allicin@α-CD at 60°C for 10 days was 33-fold improved. Overall, this efficient strategy of inclusion provided a promising approach for the industrialization of allicin-related formulations. PRACTICAL APPLICATION: In this study, an environmentally friendly method of α-CD inclusion without the use of organic reagents was designed to solidify and stabilize allicin, which effectively masked the unpleasant odor and taste of allicin. It has contributed greatly to improving the compliance of consumers and provided a new and effective approach to broaden the application of allicin.
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Affiliation(s)
- Yong Zhou
- Jiangxi University of Chinese Medicine, Nanchang, China.,Center for Drug Delivery Systems, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - Jing Feng
- Jiangxi University of Chinese Medicine, Nanchang, China.,Center for Drug Delivery Systems, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - Hui Peng
- Science and Technology Center, By-Health Co. Ltd., Guangzhou, China
| | - Tao Guo
- Center for Drug Delivery Systems, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - Jian Xiao
- Science and Technology Center, By-Health Co. Ltd., Guangzhou, China
| | - Weifeng Zhu
- Jiangxi University of Chinese Medicine, Nanchang, China
| | - Wei Qian
- Science and Technology Center, By-Health Co. Ltd., Guangzhou, China
| | - Jiwen Zhang
- Jiangxi University of Chinese Medicine, Nanchang, China.,Center for Drug Delivery Systems, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - Li Wu
- Center for Drug Delivery Systems, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
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16
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Liu B, Zhang J, Chen C, Wang D, Tian G, Zhang G, Cai D, Wu Z. Infrared-Light-Responsive Controlled-Release Pesticide Using Hollow Carbon Microspheres@Polyethylene Glycol/ α-Cyclodextrin Gel. J Agric Food Chem 2021; 69:6981-6988. [PMID: 34134484 DOI: 10.1021/acs.jafc.1c01265] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Controlled release of pesticides by light regulation is one of the most viable strategies recently developed for the highly efficient utilization of agrochemicals. Herein, we report an infrared-light-responsive pesticide delivery system for the controlled release of imidacloprid (IMI) by preparation of functional hollow carbon microspheres (HCMs). After IMI loading and surface functionalization with polyethylene glycol (PEG) and α-cyclodextrin (α-CD), IMI was sequestered in the pesticide system (denoted as HCMs/IMI/PEG/α-CD) as a result of the formation of a PEG/α-CD gel network. Upon the irradiation of infrared light, HCMs with high photothermal conversion efficiency (42.8%) raised the local temperature effectively, leading to the collapse of the gel network and the release of IMI. In comparison to the amount of pesticide release (29%) under sunlight, it could reach 77% driven by infrared light, which was an intriguing improvement. Consequently, HCMs/IMI/PEG/α-CD under infrared light showed significantly higher pest control efficacy on corn borers by 125% than itself alone. This work provides a promising method to intentionally regulate pesticide release and enhance utilization efficiency.
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Affiliation(s)
- Bin Liu
- Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui 230031, People's Republic of China
- University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
| | - Jia Zhang
- Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui 230031, People's Republic of China
- Engineering Laboratory of Environmentally Friendly and High Performance Fertilizer and Pesticide of Anhui Province, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui 230031, People's Republic of China
| | - Chaowen Chen
- Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui 230031, People's Republic of China
- Engineering Laboratory of Environmentally Friendly and High Performance Fertilizer and Pesticide of Anhui Province, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui 230031, People's Republic of China
| | - Dongfang Wang
- College of Environmental Science and Engineering, Donghua University, Shanghai 201620, People's Republic of China
| | - Geng Tian
- School of Pharmacy, Key Laboratory of Prescription Effect and Clinical Evaluation of State Administration of Traditional Chinese Medicine of China, Binzhou Medical University, Yantai, Shandong 264003, People's Republic of China
| | - Guilong Zhang
- School of Pharmacy, Key Laboratory of Prescription Effect and Clinical Evaluation of State Administration of Traditional Chinese Medicine of China, Binzhou Medical University, Yantai, Shandong 264003, People's Republic of China
| | - Dongqing Cai
- College of Environmental Science and Engineering, Donghua University, Shanghai 201620, People's Republic of China
| | - Zhengyan Wu
- Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui 230031, People's Republic of China
- Engineering Laboratory of Environmentally Friendly and High Performance Fertilizer and Pesticide of Anhui Province, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui 230031, People's Republic of China
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17
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Matsunaga T, Kanazawa J, Ichikawa T, Harada M, Nishiyama Y, Duong NT, Matsumoto T, Miyamoto K, Uchiyama M. α-Cyclodextrin Encapsulation of Bicyclo[1.1.1]pentane Derivatives: A Storable Feedstock for Preparation of [1.1.1]Propellane. Angew Chem Int Ed Engl 2021; 60:2578-2582. [PMID: 33205884 DOI: 10.1002/anie.202014997] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Indexed: 12/15/2022]
Abstract
The bicyclo[1.1.1]pentane (BCP) scaffold is useful in medicinal chemistry, and many protocols are available for synthesizing BCP derivatives from [1.1.1]propellane. Here, we report (1) the α-cyclodextrin (α-CD) encapsulation of BCP derivatives, affording a stable, readily storable material from which BCPs can be easily and quantitatively recovered and (2) new and simple protocols for deiodination reaction of 1,3-diiodo BCP to afford [1.1.1]propellane in protic/aprotic/polar/non-polar solvents. The combination of these methodologies enables simple, on-demand preparation of [1.1.1]propellane in various solvents under mild conditions from α-CD capsules containing 1,3-diiodo BCP.
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Affiliation(s)
- Tadafumi Matsunaga
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Junichiro Kanazawa
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Tomohiro Ichikawa
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Mei Harada
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Yusuke Nishiyama
- RIKEN-JEOL Collaboration Center and SPring-8 Center, RIKEN, Tsurumi, Yokohama, Kanagawa, 230-0045, Japan.,JEOL RESONANCE Inc., 3-1-2 Musashino, Akishima, Tokyo, 196-8558, Japan
| | - Nghia Tuan Duong
- RIKEN-JEOL Collaboration Center and SPring-8 Center, RIKEN, Tsurumi, Yokohama, Kanagawa, 230-0045, Japan
| | - Takashi Matsumoto
- Rigaku Corporation, 3-9-12 Matsubara-cho, Akishima, Tokyo, 196-8666, Japan
| | - Kazunori Miyamoto
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Masanobu Uchiyama
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan.,Cluster for Pioneering Research (CPR), RIKEN, 2-1 Hirosawa, Wako-shi, Saitama, 351-0198, Japan.,Research Initiative for Supra-Materials (RISM), Shinshu University, 3-15-1 Tokida, Ueda, Nagano, 386-8567, Japan
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18
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Shepelytskyi Y, Newman CJ, Grynko V, Seveney LE, DeBoef B, Hane FT, Albert MS. Cyclodextrin-Based Contrast Agents for Medical Imaging. Molecules 2020; 25:E5576. [PMID: 33261035 DOI: 10.3390/molecules25235576] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 11/21/2020] [Accepted: 11/26/2020] [Indexed: 11/17/2022] Open
Abstract
Cyclodextrins (CDs) are naturally occurring cyclic oligosaccharides consisting of multiple glucose subunits. CDs are widely used in host–guest chemistry and biochemistry due to their structural advantages, biocompatibility, and ability to form inclusion complexes. Recently, CDs have become of high interest in the field of medical imaging as a potential scaffold for the development of a large variety of the contrast agents suitable for magnetic resonance imaging, ultrasound imaging, photoacoustic imaging, positron emission tomography, single photon emission computed tomography, and computed tomography. The aim of this review is to summarize and highlight the achievements in the field of cyclodextrin-based contrast agents for medical imaging.
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19
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Paolacci S, Ceccarini MR, Codini M, Manara E, Tezzele S, Percio M, Capodicasa N, Kroni D, Dundar M, Ergoren MC, Sanlidag T, Beccari T, Farronato M, Farronato G, Tartaglia GM, Bertelli M. Pilot study for the evaluation of safety profile of a potential inhibitor of SARS-CoV-2 endocytosis. Acta Biomed 2020; 91:e2020009. [PMID: 33170175 PMCID: PMC8023122 DOI: 10.23750/abm.v91i13-s.10583] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Accepted: 09/17/2020] [Indexed: 12/14/2022]
Abstract
BACKGROUND AND AIM OF THE WORK Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is responsible for the current pandemics of coronavirus disease. This virus is able to attack the cells of the airway epithelium by binding to the transmembrane angiotensin I converting enzyme 2 (ACE2). We developed an oral spray that could inhibit the SARS-CoV-2 endocytosis. The spray contains hydroxytyrosol for its anti-viral, anti-inflammatory and anti-oxidant properties, and α-cyclodextrin for its ability to deplete sphingolipids, that form the lipid rafts where ACE2 localizes. The aim of the present pilot multi-centric open non-controlled observational study was to evaluate the safety profile of the "Endovir Stop" spray. METHODS An MTT test was performed to evaluate cytotoxicity of the spray in two human cell lines. An oxygen radical absorbance capacity assay was performed to evaluate the antioxidant capacity of the spray. The spray was also tested on 87 healthy subjects on a voluntary basis. RESULTS The MTT test revealed that the spray is not cytotoxic. The ORAC assay showed a good antioxidant capacity for the spray. Endovir Stop tested on healthy volunteers showed the total absence of side effects and drug interactions during the treatment. CONCLUSIONS We demonstrated that Endovir Stop spray is safe. The next step would be the administration of the efficacy of the spray by testing it to a wider range of people and see whether there is a reduced infection rate of SARS-CoV-2 in the treated subjects than in the non-treated individuals.
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Affiliation(s)
| | | | - Michela Codini
- Department of Pharmaceutical Sciences, University of Perugia, Perugia, Italy.
| | | | | | | | | | | | - Munis Dundar
- Department of Medical Genetics, Erciyes University Faculty of Medicine, Kayseri, Turkey.
| | - Mahmut Cerkez Ergoren
- Department of Medical Biology, Faculty of Medicine, Near East University, Nicosia, Cyprus; DESAM Insitute, Near East University, Nicosia, Cyprus.
| | | | - Tommaso Beccari
- Department of Pharmaceutical Sciences, University of Perugia, Perugia, Italy.
| | - Marco Farronato
- Department of Biomedical, Surgical and Dental Sciences, School of Dentistry, University of Milan - Fondazione IRCCS Cà Granda, Ospedale Maggiore Policlinico, Milan, Italy.
| | - Giampietro Farronato
- Department of Biomedical, Surgical and Dental Sciences, School of Dentistry, University of Milan - Fondazione IRCCS Cà Granda, Ospedale Maggiore Policlinico, Milan, Italy.
| | - Gianluca Martino Tartaglia
- Department of Biomedical, Surgical and Dental Sciences, School of Dentistry, University of Milan - Fondazione IRCCS Cà Granda, Ospedale Maggiore Policlinico, Milan, Italy.
| | - Matteo Bertelli
- MAGI'S LAB, Rovereto (TN), Italy; MAGI EUREGIO, Bolzano, Italy; EBTNA-LAB, Rovereto (TN), Italy.
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20
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Ergoren MC, Paolacci S, Manara E, Dautaj A, Dhuli K, Anpilogov K, Camilleri G, Suer HK, Sayan M, Tuncel G, Sultanoglu N, Farronato M, Tartaglia GM, Dundar M, Farronato G, Gunsel IS, Bertelli M, Sanlidag T. A pilot study on the preventative potential of alpha-cyclodextrin and hydroxytyrosol against SARS-CoV-2 transmission. Acta Biomed 2020; 91:e2020022. [PMID: 33170176 PMCID: PMC8023124 DOI: 10.23750/abm.v91i13-s.10817] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Accepted: 10/16/2020] [Indexed: 01/08/2023]
Abstract
BACKGROUND AND AIM OF THE WORK Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is responsible for the current pandemics. This virus attacks the cells by binding to the transmembrane angiotensin I converting enzyme 2. In this study, we experimented a food supplement containing alpha-cyclodextrin and hydroxytyrosol for the improvement of the defenses against the SARS-CoV-2. Hydroxytyrosol has anti-viral properties and is able to reduce the serum lipids in mice. α-cyclodextrin has the ability to deplete sphingolipids and phospholipids from the cellular membranes. The aim of the present preliminary open non-controlled interventional study was to evaluate the efficacy of alpha-cyclodextrin and hydroxytyrosol in improving defenses against SARS-CoV-2. METHODS Fifty healthy volunteers at a higher risk of SARS-CoV-2 infection from Northern Cyprus and six positive individuals for SARS-CoV-2 were enrolled in this study. The in silico prediction was performed using D3DOCKING to evaluate the interactions of hydroxytyrosol and alpha-cyclodextrin with proteins involved in the SARS-CoV-2 endocytosis. RESULTS The 50 volunteers did not become positive in 15 days for SARS-CoV-2 after the administration of the compound for two weeks, despite they were at higher risk of infection than the general population. Interestingly, in the cohort of six positive patients, two patients were administered the spray and became negative after five days, despite the viral load was higher in the treated subjects than the untreated patients who became negative after ten days. In addition, we identified possible interactions among hydroxytyrosol and alpha-cyclodextrin with the protein Spike and the human proteins ACE2 and TMPRSS2. CONCLUSIONS We reported on the results of the possible role of alpha-cyclodextrin and hydroxytyrosol in improving defenses against SARS-CoV-2. The next step will be the administration of the compound to a larger cohort in a controlled study to confirm the reduction of the infection rate of SARS-CoV-2 in the treated subjects.
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Affiliation(s)
- Mahmut Cerkez Ergoren
- Department of Medical Biology, Faculty of Medicine, Near East University, Nicosia, Cyprus; DESAM Institute, Near East University, Nicosia, Cyprus.
| | | | | | | | | | | | | | - Huseyin Kaya Suer
- Department of Infectious Diseases and Clinical Microbiology, Faculty of Medicine, Near East University, Nicosia, Cyprus.
| | - Murat Sayan
- DESAM Institute, Near East University, Nicosia, Cyprus; PCR Unit, Kocaeli University Hospital, Kocaeli, Turkey.
| | - Gulten Tuncel
- Department of Medical Biology, Faculty of Medicine, Near East University, Nicosia, Cyprus; DESAM Institute, Near East University, Nicosia, Cyprus.
| | | | - Marco Farronato
- Department of Biomedical, Surgical and Dental Sciences, School of Dentistry, University of Milan; Fondazione IRCCS Cà Granda, Ospedale Maggiore Policlinico, Milan, Italy.
| | - Gianluca Martino Tartaglia
- Department of Biomedical, Surgical and Dental Sciences, School of Dentistry, University of Milan; Fondazione IRCCS Cà Granda, Ospedale Maggiore Policlinico, Milan, Italy.
| | - Munis Dundar
- Department of Medical Genetics, Erciyes University Faculty of Medicine, Kayseri, Turkey.
| | - Giampietro Farronato
- Department of Biomedical, Surgical and Dental Sciences, School of Dentistry, University of Milan; Fondazione IRCCS Cà Granda, Ospedale Maggiore Policlinico, Milan, Italy.
| | | | - Matteo Bertelli
- MAGI'S LAB, Rovereto (TN), Italy; MAGI EUREGIO, Bolzano, Italy; EBTNA-LAB, Rovereto (TN), Italy.
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Khodaverdi E, Eisvand F, Nezami MS, Shiadeh SNR, Kamali H, Hadizadeh F. Injectable In-Situ Forming Depot of Doxycycline Hyclate/ α-Cyclodextrin Complex Using PLGA for Periodontitis Treatment: Preparation, Characterization, and In-Vitro Evaluation. Curr Drug Deliv 2020; 18:729-740. [PMID: 33155908 DOI: 10.2174/1567201817999201103195104] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 07/29/2020] [Accepted: 09/25/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Doxycycline (DOX) is used in treating a bacterial infection, especially for periodontitis treatment. OBJECTIVE To reduce irritation of DOX for subgingival administration and increase the chemical stability and against enzymatic, the complex of α-cyclodextrin with DOX was prepared and loaded into injectable in situ forming implant based on PLGA. METHODS FTIR, molecular docking studies, X-ray diffraction, and differential scanning calorimetry was performed to characterize the DOX/α-cyclodextrin complex. Finally, the in-vitro drug release and modeling, morphological properties, and cellular cytotoxic effects were also evaluated. RESULTS The stability of DOX was improved with complex than pure DOX. The main advantage of the complex is the almost complete release (96.31 ± 2.56 %) of the drug within 14 days of the implant, whereas in the formulation containing the pure DOX and the physical mixture the DOX with α-cyclodextrin release is reached to 70.18 ± 3.61 % and 77.03 ± 3.56 %, respectively. This trend is due to elevate of DOX stability in the DOX/ α-cyclodextrin complex form within PLGA implant that confirmed by the results of stability. CONCLUSION Our results were indicative that the formulation containing DOX/α-cyclodextrin complex was biocompatible and sustained-release with minimum initial burst release.
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Affiliation(s)
- Elham Khodaverdi
- Targeted Drug Delivery Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Farhad Eisvand
- Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohammad Sina Nezami
- Targeted Drug Delivery Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Seyedeh Nesa Rezaeian Shiadeh
- Targeted Drug Delivery Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Hossein Kamali
- Targeted Drug Delivery Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Farzin Hadizadeh
- Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
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Domiński A, Konieczny T, Kurcok P. α-Cyclodextrin-Based Polypseudorotaxane Hydrogels. Materials (Basel) 2019; 13:E133. [PMID: 31905603 PMCID: PMC6982288 DOI: 10.3390/ma13010133] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 12/18/2019] [Accepted: 12/19/2019] [Indexed: 12/26/2022]
Abstract
Supramolecular hydrogels that are based on inclusion complexes between α-cyclodextrin and (co)polymers have gained significant attention over the last decade. They are formed via dynamic noncovalent bonds, such as host-guest interactions and hydrogen bonds, between various building blocks. In contrast to typical chemical crosslinking (covalent linkages), supramolecular crosslinking is a type of physical interaction that is characterized by great flexibility and it can be used with ease to create a variety of "smart" hydrogels. Supramolecular hydrogels based on the self-assembly of polypseudorotaxanes formed by a polymer chain "guest" and α-cyclodextrin "host" are promising materials for a wide range of applications. α-cyclodextrin-based polypseudorotaxane hydrogels are an attractive platform for engineering novel functional materials due to their excellent biocompatibility, thixotropic nature, and reversible and stimuli-responsiveness properties. The aim of this review is to provide an overview of the current progress in the chemistry and methods of designing and creating α-cyclodextrin-based supramolecular polypseudorotaxane hydrogels. In the described systems, the guests are (co)polymer chains with various architectures or polymeric nanoparticles. The potential applications of such supramolecular hydrogels are also described.
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Affiliation(s)
| | | | - Piotr Kurcok
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34, M. Curie-Sklodowskiej St., 41-819 Zabrze, Poland; (A.D.); (T.K.)
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Bertelsen AS, Laursen A, Knudsen TA, Møller S, Kidmose U. Bitter taste masking of enzyme-treated soy protein in water and bread. J Sci Food Agric 2018; 98:3860-3869. [PMID: 29363768 DOI: 10.1002/jsfa.8903] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Revised: 01/08/2018] [Accepted: 01/12/2018] [Indexed: 06/07/2023]
Abstract
BACKGROUND Bioactive protein hydrolysates are often very bitter. To overcome this challenge, xylitol, sucrose, α-cyclodextrin, maltodextrin and combinations of these were tested systematically as bitter-masking agents of an enzyme-treated soy protein in an aqueous model and in a bread model. Sensory descriptive analysis was used to reveal the bitter-masking effect of the taste-masking blends on the enzyme-treated soy protein. RESULTS In water, xylitol, sucrose and maltodextrin reduced bitterness significantly, whereas α-cyclodextrin did not. No significant difference was observed in bitterness reduction between xylitol and sucrose. Both reduced bitterness significantly more than maltodextrin. No interactions between the taste-masking agents affecting bitterness reduction were found. Clearer bitter-masking effects were seen in the aqueous model compared with the bread model. The bitter-masking effects of α-cyclodextrin and maltodextrin were similar between water and bread. The effect of xylitol and sucrose on bitterness suppression varied between the systems. In water, bitterness was negatively correlated with sweetness. In bread, bitterness was negatively correlated with freshness, and maltodextrin significantly reduced bitterness of the enzyme-treated soy protein and increased freshness. CONCLUSION Bitter-masking effects were generally more discernible in the aqueous model compared with the bread model. © 2018 Society of Chemical Industry.
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Affiliation(s)
| | - Anne Laursen
- DuPont Nutrition Biosciences Aps, Brabrand, Denmark
| | | | - Stine Møller
- DuPont Nutrition Biosciences Aps, Brabrand, Denmark
| | - Ulla Kidmose
- Department of Food Science, Aarhus University, Årslev, Denmark
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Femminò S, Penna C, Bessone F, Caldera F, Dhakar N, Cau D, Pagliaro P, Cavalli R, Trotta F. α-Cyclodextrin and α-Cyclodextrin Polymers as Oxygen Nanocarriers to Limit Hypoxia/Reoxygenation Injury: Implications from an In Vitro Model. Polymers (Basel) 2018; 10:polym10020211. [PMID: 30966247 PMCID: PMC6414891 DOI: 10.3390/polym10020211] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Revised: 02/14/2018] [Accepted: 02/16/2018] [Indexed: 01/20/2023] Open
Abstract
The incidence of heart failure (HF) is increasing worldwide and myocardial infarction (MI), which follows ischemia and reperfusion (I/R), is often at the basis of HF development. Nanocarriers are interesting particles for their potential application in cardiovascular disease. Impaired drug delivery in ischemic disease is challenging. Cyclodextrin nanosponges (NS) can be considered innovative tools for improving oxygen delivery in a controlled manner. This study has developed new α-cyclodextrin-based formulations as oxygen nanocarriers such as native α-cyclodextrin (α-CD), branched α-cyclodextrin polymer (α-CD POLY), and α-cyclodextrin nanosponges (α-CD NS). The three different α-CD-based formulations were tested at 0.2, 2, and 20 µg/mL to ascertain their capability to reduce cell mortality during hypoxia and reoxygenation (H/R) in vitro protocols. H9c2, a cardiomyoblast cell line, was exposed to normoxia (20% oxygen) or hypoxia (5% CO2 and 95% N2). The different formulations, applied before hypoxia, induced a significant reduction in cell mortality (in a range of 15% to 30%) when compared to samples devoid of oxygen. Moreover, their application at the beginning of reoxygenation induced a considerable reduction in cell death (12% to 20%). α-CD NS showed a marked efficacy in controlled oxygenation, which suggests an interesting potential for future medical application of polymer systems for MI treatment.
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Affiliation(s)
- Saveria Femminò
- Department of Clinical and Biological Sciences, University of Turin, 10043 Orbassano, Italy.
| | - Claudia Penna
- Department of Clinical and Biological Sciences, University of Turin, 10043 Orbassano, Italy.
| | - Federica Bessone
- Department of Drug Science and Technology, University of Turin, 10125 Turin, Italy.
| | - Fabrizio Caldera
- Department of Chemistry, University of Turin, 10125 Turin, Italy.
| | - Nilesh Dhakar
- Department of Chemistry, University of Turin, 10125 Turin, Italy.
| | - Daniele Cau
- Department of Clinical and Biological Sciences, University of Turin, 10043 Orbassano, Italy.
| | - Pasquale Pagliaro
- Department of Clinical and Biological Sciences, University of Turin, 10043 Orbassano, Italy.
| | - Roberta Cavalli
- Department of Drug Science and Technology, University of Turin, 10125 Turin, Italy.
| | - Francesco Trotta
- Department of Chemistry, University of Turin, 10125 Turin, Italy.
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Koo YS, Ko DS, Jeong DW, Shim JH. Development and Application of Cyclodextrin Hydrolyzing Mutant Enzyme Which Hydrolyzes β- and γ-CD Selectively. J Agric Food Chem 2017; 65:2331-2336. [PMID: 28251851 DOI: 10.1021/acs.jafc.7b00269] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Cyclodextrins (CDs) are produced from starch by cyclodextrin glucanotransferase (CGTase), which has cyclization activity. Specifically, α-CD is an important biomolecule, as it is a molecular carrier and soluble dietary fiber used in the food industry. Upon inspection of the conserved regions of the glycoside hydrolase (GH) 13 family amylases, the amino acids K232 and H233 of CGTase were identified as playing an important role in enzyme reaction specificity. A novel CD hydrolyzing enzyme, cyclodextrin glycosyl transferase (CGTase)-alpha, was developed using site-directed mutagenesis at these positions. Action pattern analysis using various substrates revealed that CGTase-alpha was able to hydrolyze β- and γ-CD, but not α-CD. This selective CD hydrolyzing property was employed to purify α-CD from a CD mixture solution. The α-CD that remained after treatment with CGTase-alpha and exotype glucoamylase was purified using hydrophobic interaction chromatography with 99% purity.
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Affiliation(s)
- Ye-Seul Koo
- Department of Food Science and Nutrition and Center for Aging and Health Care, Hallym University , Hallymdaehak-gil 1, Chuncheon, Gangwon-do 24252, Korea
| | - Dam-Seul Ko
- Department of Food Science and Nutrition and Center for Aging and Health Care, Hallym University , Hallymdaehak-gil 1, Chuncheon, Gangwon-do 24252, Korea
| | - Da-Woon Jeong
- Department of Food Science and Nutrition and Center for Aging and Health Care, Hallym University , Hallymdaehak-gil 1, Chuncheon, Gangwon-do 24252, Korea
| | - Jae-Hoon Shim
- Department of Food Science and Nutrition and Center for Aging and Health Care, Hallym University , Hallymdaehak-gil 1, Chuncheon, Gangwon-do 24252, Korea
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Chan SY, Choo WS, Young DJ, Loh XJ. Thixotropic Supramolecular Pectin-Poly(Ethylene Glycol) Methacrylate (PEGMA) Hydrogels. Polymers (Basel) 2016; 8:E404. [PMID: 30974681 PMCID: PMC6432130 DOI: 10.3390/polym8110404] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2016] [Revised: 11/07/2016] [Accepted: 11/10/2016] [Indexed: 01/25/2023] Open
Abstract
Pectin is an anionic, water-soluble polymer predominantly consisting of covalently 1,4-linked α-d-galacturonic acid units. This naturally occurring, renewable and biodegradable polymer is underutilized in polymer science due to its insolubility in organic solvents, which renders conventional polymerization methods impractical. To circumvent this problem, cerium-initiated radical polymerization was utilized to graft methoxy-poly(ethylene glycol) methacrylate (mPEGMA) onto pectin in water. The copolymers were characterized by ¹H nuclear magnetic resonance (NMR), Fourier transform infrared (FTIR) spectroscopy and thermogravimetric analysis (TGA), and used in the formation of supramolecular hydrogels through the addition of α-cyclodextrin (α-CD) to induce crosslinking. These hydrogels possessed thixotropic properties; shear-thinning to liquid upon agitation but settling into gels at rest. In contrast to most of the other hydrogels produced through the use of poly(ethylene glycol) (PEG)-grafted polymers, the pectin-PEGMA/α-CD hydrogels were unaffected by temperature changes.
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Affiliation(s)
- Siew Yin Chan
- School of Science, Monash University Malaysia, Subang Jaya 47500, Malaysia.
- Institute of Materials Research and Engineering (IMRE), A*STAR (Agency for Science, Technology and Research), Singapore 138634, Singapore.
| | - Wee Sim Choo
- School of Science, Monash University Malaysia, Subang Jaya 47500, Malaysia.
| | - David James Young
- School of Science, Monash University Malaysia, Subang Jaya 47500, Malaysia.
- Institute of Materials Research and Engineering (IMRE), A*STAR (Agency for Science, Technology and Research), Singapore 138634, Singapore.
- Faculty of Science, Health, Education and Engineering, University of the Sunshine Coast, Sunshine Coast, QLD 4558, Australia.
| | - Xian Jun Loh
- Institute of Materials Research and Engineering (IMRE), A*STAR (Agency for Science, Technology and Research), Singapore 138634, Singapore.
- Department of Materials Science and Engineering, National University of Singapore, Singapore 117576, Singapore.
- Singapore Eye Research Institute, Singapore 168751, Singapore.
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Amar MJA, Kaler M, Courville AB, Shamburek R, Sampson M, Remaley AT. Randomized double blind clinical trial on the effect of oral α-cyclodextrin on serum lipids. Lipids Health Dis 2016; 15:115. [PMID: 27405337 PMCID: PMC4941029 DOI: 10.1186/s12944-016-0284-6] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Accepted: 06/30/2016] [Indexed: 01/29/2023] Open
Abstract
Background This single center, double-blinded, cross-over, placebo controlled clinical trial investigated the effect of oral α-cyclodextrin (α-CD), a soluble dietary fiber, on blood lipid and lipoprotein levels in healthy human subjects. α-CD, a cyclical polymer containing 6 glucose subunits, is currently sold as an over the counter food supplement and is also a common additive in many foods. α-CD forms a hydrophobic central cavity that binds lipids and has been shown in animal studies and in previous clinical trials to alter plasma lipid levels. Methods We screened for healthy subjects, males and females, between ages 18 to 75. Out of total 103 subjects interviewed, 75 subjects completed the study. Qualified individuals in each gender group were randomized into two groups in terms of which treatment arm they received first (placebo vs. α-CD, receiving 6 grams P.O. a day, for 12–14 weeks with a 7 day wash out between arms). The primary outcome variable, plasma total cholesterol, as well as other tests related to lipids and lipoprotein and glucose metabolism, were measured at baseline and at the end of each arm of the study. Results α-CD was well tolerated; no serious adverse events related to α-CD were observed. Approximately 8 % of the subjects on α-CD complained of minor gastrointestinal symptoms versus 3 % on placebo (p = 0.2). Small-LDL particle number decreased 10 % (p < 0.045) for subjects on α-CD versus placebo. Fasting plasma glucose (1.6 %, p < 0.05) and Insulin resistance index (11 %, p < 0.04) were also decreased when on α-CD versus placebo. Conclusion α-CD treatment appears to be safe and well tolerated in healthy individuals and showed a modest reduction in small LDL particles, and an improvement in glucose related parameters. Trial registration NCT01131299
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Affiliation(s)
- Marcelo J A Amar
- Lipoprotein Metabolism Section, Cardio-Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Building 10, Room 8 N-228, 10 Center Drive MSC 1666, Bethesda, MD, USA.
| | - Maryann Kaler
- Lipoprotein Metabolism Section, Cardio-Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Building 10, Room 8 N-228, 10 Center Drive MSC 1666, Bethesda, MD, USA
| | - Amber B Courville
- Lipoprotein Metabolism Section, Cardio-Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Building 10, Room 8 N-228, 10 Center Drive MSC 1666, Bethesda, MD, USA
| | - Robert Shamburek
- Lipoprotein Metabolism Section, Cardio-Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Building 10, Room 8 N-228, 10 Center Drive MSC 1666, Bethesda, MD, USA
| | - Maureen Sampson
- Lipoprotein Metabolism Section, Cardio-Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Building 10, Room 8 N-228, 10 Center Drive MSC 1666, Bethesda, MD, USA
| | - Alan T Remaley
- Lipoprotein Metabolism Section, Cardio-Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Building 10, Room 8 N-228, 10 Center Drive MSC 1666, Bethesda, MD, USA
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Jana B, Mohapatra S, Mondal P, Barman S, Pradhan K, Saha A, Ghosh S. α-Cyclodextrin Interacts Close to Vinblastine Site of Tubulin and Delivers Curcumin Preferentially to the Tubulin Surface of Cancer Cell. ACS Appl Mater Interfaces 2016; 8:13793-13803. [PMID: 27228201 DOI: 10.1021/acsami.6b03474] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Tubulin is the key cytoskeleton component, which plays a crucial role in eukaryotic cell division. Many anticancer drugs have been developed targeting the tubulin surface. Recently, it has been shown that few polyhydroxy carbohydrates perturb tubulin polymerization. Cyclodextrin (CD), a polyhydroxy carbohydrate, has been extensively used as the delivery vehicle for delivery of hydrophobic drugs to the cancer cell. However, interaction of CD with intracellular components has not been addressed before. In this Article, we have shown for the first time that α-CD interacts with tubulin close to the vinblastine site using molecular docking and Förster resonance energy transfer (FRET) experiment. In addition, we have shown that α-CD binds with intracellular tubulin/microtubule. It delivers a high amount of curcumin onto the cancer cell, which causes severe disruption of intracellular microtubules. Finally, we have shown that the inclusion complex of α-CD and curcumin (CCC) preferentially enters into the human lung cancer cell (A549) as compared to the normal lung fibroblast cell (WI38), causes apoptotic death, activates tumor suppressor protein (p53) and cyclin-dependent kinase inhibitor 1 (p21), and inhibits 3D spheroid growth of cancer cell.
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Affiliation(s)
- Batakrishna Jana
- Organic & Medicinal Chemistry Division, and ‡Academy of Scientific and Innovative Research (AcSIR), CSIR-Indian Institute of Chemical Biology , 4 Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, West Bengal, India
| | - Saswat Mohapatra
- Organic & Medicinal Chemistry Division, and ‡Academy of Scientific and Innovative Research (AcSIR), CSIR-Indian Institute of Chemical Biology , 4 Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, West Bengal, India
| | - Prasenjit Mondal
- Organic & Medicinal Chemistry Division, and ‡Academy of Scientific and Innovative Research (AcSIR), CSIR-Indian Institute of Chemical Biology , 4 Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, West Bengal, India
| | - Surajit Barman
- Organic & Medicinal Chemistry Division, and ‡Academy of Scientific and Innovative Research (AcSIR), CSIR-Indian Institute of Chemical Biology , 4 Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, West Bengal, India
| | - Krishnangsu Pradhan
- Organic & Medicinal Chemistry Division, and ‡Academy of Scientific and Innovative Research (AcSIR), CSIR-Indian Institute of Chemical Biology , 4 Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, West Bengal, India
| | - Abhijit Saha
- Organic & Medicinal Chemistry Division, and ‡Academy of Scientific and Innovative Research (AcSIR), CSIR-Indian Institute of Chemical Biology , 4 Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, West Bengal, India
| | - Surajit Ghosh
- Organic & Medicinal Chemistry Division, and ‡Academy of Scientific and Innovative Research (AcSIR), CSIR-Indian Institute of Chemical Biology , 4 Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, West Bengal, India
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Ijaz M, Ahmad M, Akhtar N, Laffleur F, Bernkop-Schnürch A. Thiolated α-Cyclodextrin: The Invisible Choice to Prolong Ocular Drug Residence Time. J Pharm Sci 2016; 105:2848-2854. [PMID: 27233687 DOI: 10.1016/j.xphs.2016.04.021] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Revised: 04/14/2016] [Accepted: 04/20/2016] [Indexed: 11/30/2022]
Abstract
It was the aim of this study to develop cysteamine-conjugated α-cyclodextrin (α-CD) enabled to form disulfide bonds with cysteine-rich substructures of the ocular mucus layer to provide a prolonged residence time of incorporated drugs at the site of action. Cysteamine was covalently attached to oxidized α-CD via reductive amination. The resulting α-CD-cysteamine conjugates (α-CD-Cys) were characterized regarding the amount of free thiol groups attached to the oligomer backbone via Ellman's reagent; resazurin assay was conducted for cytotoxicity, and mucoadhesive properties were evaluated on porcine intestinal and ocular mucosal tissues. Furthermore, albino rabbits were used for assessing the irritation-masking effects of α-CD-Cys. Free thiol groups attached to the backbone were in the range of 558 ± 24-1143 ± 92 μmol/g. None of these α-CD-Cys unduly affected the viability of Caco-2 cells in a concentration of 0.5%. Mucoadhesive properties of α-CD-Cys were up to 32-fold improved compared to unmodified α-CD. Encapsulation of cetirizine into α-CD-Cys resulted in significantly reduced local ocular mucosal irritation of this model drug. According to these results, α-CD-Cys is a promising new tool to prolong drug residence time on the ocular mucosal surface.
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Affiliation(s)
- Muhammad Ijaz
- Department of Pharmaceutical Technology, Center for Chemistry and Biomedicine, Institute of Pharmacy, University of Innsbruck, Innsbruck, Austria
| | - Mahmood Ahmad
- Department of Pharmacy, Faculty of Pharmacy and Alternative Medicine, The Islamia University Bahawalpur, Bahawalpur, Pakistan
| | - Naveed Akhtar
- Department of Pharmacy, Faculty of Pharmacy and Alternative Medicine, The Islamia University Bahawalpur, Bahawalpur, Pakistan
| | - Flavia Laffleur
- Department of Pharmaceutical Technology, Center for Chemistry and Biomedicine, Institute of Pharmacy, University of Innsbruck, Innsbruck, Austria
| | - Andreas Bernkop-Schnürch
- Department of Pharmaceutical Technology, Center for Chemistry and Biomedicine, Institute of Pharmacy, University of Innsbruck, Innsbruck, Austria.
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Inagaki H, Ito R, Setoguchi Y, Oritani Y, Ito T. Administration of Piceatannol Complexed with α-Cyclodextrin Improves Its Absorption in Rats. J Agric Food Chem 2016; 64:3557-3563. [PMID: 27078058 DOI: 10.1021/acs.jafc.6b00398] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Piceatannol is polyphenolic antioxidant found in passion fruit (Passiflora edulis) seeds. The aim of this study was to improve the absorption of piceatannol using α-cyclodextrin (αCD). The solubility of piceatannol in neutral and acidic solutions increased in an αCD concentration-dependent manner. The maximum plasma concentration of intact piceatannol and the time-to-maximum plasma concentration of O-methylated piceatannol metabolites increased in rats administered αCD-piceatannol inclusion complexes (PICs). Administering the αCD inclusion complexes significantly increased the area under the concentration-time curve of total stilbene derivatives (0-3 h) in terms of the total amount of intact piceatannol, O-methylated piceatannol, conjugated piceatannol, and isorhapontigenin. Gastrointestinal ligation experiments demonstrated that substantially higher levels of piceatannol metabolites were present in the lower intestine (the ileum) at 1 h postintragastric αCD-PICs administration as compared to those observed following piceatannol administration only. These results suggested that αCD enhanced piceatannol movement and absorption in the small intestine.
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Affiliation(s)
- Hiroyuki Inagaki
- Research Institute, Morinaga & Company, Ltd. , 2-1-1 Shimosueyoshi, Tsurumi-ku, Yokohama, Kanagawa 230-8504, Japan
| | - Ryouichi Ito
- Research Institute, Morinaga & Company, Ltd. , 2-1-1 Shimosueyoshi, Tsurumi-ku, Yokohama, Kanagawa 230-8504, Japan
| | - Yuko Setoguchi
- Research Institute, Morinaga & Company, Ltd. , 2-1-1 Shimosueyoshi, Tsurumi-ku, Yokohama, Kanagawa 230-8504, Japan
| | - Yukihiro Oritani
- Research Institute, Morinaga & Company, Ltd. , 2-1-1 Shimosueyoshi, Tsurumi-ku, Yokohama, Kanagawa 230-8504, Japan
| | - Tatsuhiko Ito
- Research Institute, Morinaga & Company, Ltd. , 2-1-1 Shimosueyoshi, Tsurumi-ku, Yokohama, Kanagawa 230-8504, Japan
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Seo JH, Nakagawa S, Hirata K, Yui N. Synthesis of a resin monomer-soluble polyrotaxane crosslinker containing cleavable end groups. Beilstein J Org Chem 2015; 10:2623-9. [PMID: 25550723 PMCID: PMC4273235 DOI: 10.3762/bjoc.10.274] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Accepted: 10/17/2014] [Indexed: 01/03/2023] Open
Abstract
A resin monomer-soluble polyrotaxane (PRX) crosslinker with cleavable end groups was synthesized to develop degradable photosetting composite resins. The PRX containing 50 α-cyclodextrins (α-CDs) with disulfide end groups was initially modified with n-butylamine to obtain a resin monomer-soluble PRX. The PRX containing 13 n-butyl groups per α-CD molecule was completely soluble in conventional resin monomers such as 2-hydroxyethyl methacrylate (HEMA) and urethane dimethacrylate (UDMA). The synthesized n-butyl-containing PRX was further modified with 2-aminoethyl methacrylate to provide crosslinkable acrylic groups onto PRX. The prepared resin monomer-soluble PRX crosslinker was successfully polymerized with a mixture of HEMA and UDMA to provide photosetting plastic. It was confirmed that the Vickers hardness of the prepared plastic was greatly decreased after treatment with dithiothreitol. This indicates that the resin monomer-soluble PRX crosslinker can be applied to design degradable photosetting plastics potentially used in the industrial or biomedical field.
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Affiliation(s)
- Ji-Hun Seo
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo, 101-0062, Japan
| | - Shino Nakagawa
- Tokuyama Dental Corp. Research Institute, Tsukuba, 300-4247, Japan
| | - Koichiro Hirata
- Tokuyama Dental Corp. Research Institute, Tsukuba, 300-4247, Japan
| | - Nobuhiko Yui
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo, 101-0062, Japan
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Furune T, Ikuta N, Ishida Y, Okamoto H, Nakata D, Terao K, Sakamoto N. A study on the inhibitory mechanism for cholesterol absorption by α-cyclodextrin administration. Beilstein J Org Chem 2014; 10:2827-35. [PMID: 25550749 PMCID: PMC4273249 DOI: 10.3762/bjoc.10.300] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Accepted: 11/10/2014] [Indexed: 11/23/2022] Open
Abstract
Background: Micelle formation of cholesterol with lecithin and bile salts is a key process for intestinal absorption of lipids. Some dietary fibers commonly used to reduce the lipid content in the body are thought to inhibit lipid absorption by binding to bile salts and decreasing the lipid solubility. Amongst these, α-cyclodextrin (α-CD) is reportedly one of the most powerful dietary fibers for decreasing blood cholesterol. However, it is difficult to believe that α-CD directly removes cholesterol because it has a very low affinity for cholesterol and its mechanism of action is less well understood than those of other dietary fibers. To identify this mechanism, we investigated the interaction of α-CD with lecithin and bile salts, which are essential components for the dissolution of cholesterol in the small intestine, and the effect of α-CD on micellar solubility of cholesterol. Results: α-CD was added to Fed-State Simulated Intestinal Fluid (FeSSIF), and precipitation of a white solid was observed. Analytical data showed that the precipitate was a lecithin and α-CD complex with a molar ratio of 1:4 or 1:5. The micellar solubility of cholesterol in the mixture of FeSSIF and α-CD was investigated, and found to decrease through lecithin precipitation caused by the addition of α-CD, in a dose-dependent manner. Furthermore, each of several other water-soluble dietary fibers was added to the FeSSIF, and no precipitate was generated. Conclusion: This study suggests that α-CD decreases the micellar solubility of cholesterol in the lumen of the small intestine via the precipitation of lecithin from bile salt micelles by complex formation with α-CD. It further indicates that the lecithin precipitation effect on the bile salt micelles by α-CD addition clearly differs from addition of other water-soluble dietary fibers. The decrease in micellar cholesterol solubility in the FeSSIF was the strongest with α-CD addition.
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Affiliation(s)
- Takahiro Furune
- Division of Food and Drug Evaluation Science, Graduate School of Medicine, Kobe University, 650-0017, Japan ; CycloChem Bio Co., Ltd., 650-0047, Japan
| | - Naoko Ikuta
- Division of Food and Drug Evaluation Science, Graduate School of Medicine, Kobe University, 650-0017, Japan
| | | | | | | | - Keiji Terao
- Division of Food and Drug Evaluation Science, Graduate School of Medicine, Kobe University, 650-0017, Japan ; CycloChem Bio Co., Ltd., 650-0047, Japan
| | - Norihiro Sakamoto
- Division of Food and Drug Evaluation Science, Graduate School of Medicine, Kobe University, 650-0017, Japan
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Jarosz PA, Fletcher E, Elserafy E, Artiss JD, Jen KLC. The effect of α-cyclodextrin on postprandial lipid and glycemic responses to a fat-containing meal. Metabolism 2013; 62:1443-7. [PMID: 23806736 DOI: 10.1016/j.metabol.2013.05.015] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2013] [Revised: 04/26/2013] [Accepted: 05/21/2013] [Indexed: 11/22/2022]
Abstract
OBJECTIVE α-Cyclodextrin (α-CD), a soluble dietary fiber derived from corn, marketed under the trade name FBCx®, has the potential to help individuals manage their weight and improve their lipid profiles. Initial studies in healthy overweight and/or obese diabetic individuals found that, in those consuming a normal to high fat diet over a 4 or 12 week period, α-CD use was associated with weight loss or maintenance and a reduction in triglyceride (TG) and cholesterol levels in hyperlipidemic individuals. Furthermore, α-CD use was associated with the positive effects of increasing insulin and leptin sensitivities. To date, the immediate post-prandial glucose and lipid responses to a fat-containing meal have not been reported. MATERIALS/METHOD This double blinded placebo controlled cross-over trial examined the effect of 2 g of α-CD taken immediately following consumption of a commercially prepared high-fat breakfast meal on the acute postprandial responses in healthy adults. RESULTS The coincidental consumption of α-CD with a fat-containing meal was associated with a significant reduction in postprandial TG responses over time when compared to placebo. When incremental area under the curve was calculated, the area under the curve associated with α-CD consumption was significantly smaller than the Placebo area (0.30±1.07 mmol/L/3 h vs. 0.98±0.88 mmol/L/3 h, p<0.05). There were no significant changes in glucose or cholesterol levels. CONCLUSION α-Cyclodextrin was shown to significantly lower acute postprandial blood triglyceride levels.
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Arima H, Motoyama K, Higashi T. Sugar-appended polyamidoamine dendrimer conjugates with cyclodextrins as cell-specific non-viral vectors. Adv Drug Deliv Rev 2013; 65:1204-14. [PMID: 23602906 DOI: 10.1016/j.addr.2013.04.001] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2012] [Revised: 03/26/2013] [Accepted: 04/10/2013] [Indexed: 12/31/2022]
Abstract
The widespread use of various cyclodextrin (CyD)-appended polymers and polyrotaxanes as gene carriers has been reported. Among the various polyamidoamine dendrimer (dendrimer) conjugates with CyDs (CDE), the dendrimer (G3) conjugate with α-CyD having an average degree of substitution (DS) of 2.4 (α-CDE (G3, DS 2)) displayed remarkable properties as DNA carriers. In an attempt to develop cell-specific gene transfer carriers, we prepared some sugar-appended α-CDEs, e.g. mannosylated, galactosylated, and lactosylated α-CDEs. In addition, PEGylated Lac-α-CDEs (G3) were prepared and evaluated as a hepatocyte-selective and serum-resistant gene transfer carrier. Moreover, PEGylated-α-CDE/CyD polypseudorotaxane systems for novel sustained DNA release system have been developed. Interestingly, glucronylglucosyl-β-cyclodextrin (GUG-β-CyD) conjugates with dendrimer (G2) (GUG-β-CDE (G2)) had superior gene transfer activity to α-CDE (G2), expecting a development of new series of sugar-appended CDEs over α-CDEs (G2). Collectively, sugar-appended α-CDEs have the potential as novel cell-specific and safe carriers for DNA.
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Affiliation(s)
- Hidetoshi Arima
- Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1Oe-honmachi, Chuo-ku, Kumamoto 862-0973, Japan.
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Abstract
Synthetic polymers are employed to create highly defined microenvironments with controlled biochemical and biophysical properties for cell culture and tissue engineering. Chemical modification is required to input biological or chemical ligands, which often changes the fundamental structural properties of the material. Here, we report on a simple modular biomaterial design strategy that employs functional cyclodextrin nanobeads threaded onto poly(ethylene glycol) polymer necklaces to form multifunctional hydrogels. Nanobeads with desired chemical or biological functionalities can be simply threaded onto the PEG chains to form hydrogels, creating an accessible platform for users. We describe the design and synthesis of these multifunctional hydrogels, elucidate structure-property relationships, and demonstrate applications ranging from stem cell culture and differentiation to tissue engineering.
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Affiliation(s)
- Anirudha Singh
- 400 N. Broadway, Robert H. & Clarice Smith Building, Wilmer Eye Institute & Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD-21231, USA
| | - Jianan Zhan
- 400 N. Broadway, Robert H. & Clarice Smith Building, Wilmer Eye Institute & Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD-21231, USA
| | - Zhaoyang Ye
- The State Key Laboratory of Bioreactor Engineering, School of Bioengineering, East China University of Science and Technology, Shanghai-200237, China
| | - Jennifer H. Elisseeff
- 400 N. Broadway, Robert H. & Clarice Smith Building, Wilmer Eye Institute & Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD-21231, USA
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Abstract
Electrospun fibers based on aliphatic polyesters, such as poly(ε-caprolactone) (PCL), have been widely used in regenerative medicine and drug delivery applications due to their biocompatibility, low cost and ease of fabrication. However, these aliphatic polyester fibers are hydrophobic in nature, resulting in poor wettability, and they lack functional groups for decorating the scaffold with chemical and biological cues. Current strategies employed to overcome these challenges include coating and blending the fibers with bioactive components or chemically modifying the fibers with plasma treatment and reactants. In the present study, we report on designing multifunctional electrospun nanofibers based on the inclusion complex of PCL-α-cyclodextrin (PCL-α-CD), which provides both structural support and multiple functionalities for further conjugation of bioactive components. This strategy is independent of any chemical modification of the PCL main chain, and electrospinning of PCL-α-CD is as easy as electrospinning PCL. Here, we describe synthesis of the PCL-α-CD electrospun nanofibers, elucidate composition and structure, and demonstrate the utility of functional groups on the fibers by conjugating a fluorescent small molecule and a polymeric-nanobead to the nanofibers. Furthermore, we demonstrate the application of PCL-α-CD nanofibers for promoting osteogenic differentiation of human adipose-derived stem cells (hADSCs), which induced a higher level of expression of osteogenic markers and enhanced production of extracellular matrix (ECM) proteins or molecules compared with control PCL fibers.
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Affiliation(s)
- Jianan Zhan
- Wilmer Eye Institute and Department of Biomedical Engineering; Johns Hopkins University; Baltimore, MD USA
| | - Anirudha Singh
- Wilmer Eye Institute and Department of Biomedical Engineering; Johns Hopkins University; Baltimore, MD USA
| | - Zhe Zhang
- Center for Biomedical Imaging Research; Department of Biomedical Engineering; School of Medicine; Tsinghua University; Beijing, P.R. China
| | - Ling Huang
- Department of Chemical and Biomolecular Engineering; Johns Hopkins University; Baltimore, MD USA
| | - Jennifer H. Elisseeff
- Wilmer Eye Institute and Department of Biomedical Engineering; Johns Hopkins University; Baltimore, MD USA
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Sivasubramanian M, Kim YJ, Chae SY, Son S, Jo DG, Lee KC, Yoo CK, Park JH. Thiolated glycol chitosan bearing α-cyclodextrin for sustained delivery of PEGylated human growth hormone. J Biomater Sci Polym Ed 2012; 23:1995-2005. [PMID: 22040402 DOI: 10.1163/092050611x603700] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The extensive use of human growth hormone (hGH), emerging as protein therapeutics, has been limited by its instability in biological fluids and short biological half-life. In this study, thiolated glycol chitosan bearing α-cyclodextrin (TGC-CD), in situ cross-linked by poly(ethylene glycol)-diacrylate (PEG-DA), was synthesized to develop a sustained release system for PEGylated hGH (PEG-hGH). TGC-CD could form a stable inclusion complex with PEG-hGH by the physical interaction between the inner cavity of CD and PEG. Such a complex was readily cross-linked in the presence of PEG-DA via a Michael-type addition reaction. From the in vitro release experiments of PEG-hGH, it was confirmed that PEG-hGH was completely released from the complex for 12 h in PBS (pH 7.4), whereas the release rate of PEG-hGH was significantly reduced by the chemical cross-linking of the complex. PEG-hGH, released from the cross-linked complexes, maintained its structural integrity, which was demonstrated using circular dichroism spectroscopy. Overall, TGC-CD might be useful for sustained delivery of PEG-hGH.
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Affiliation(s)
- Maharajan Sivasubramanian
- a Department of Advanced Polymer and Fiber Materials , Kyung Hee University , Gyeonggi-do , 446-701 , South Korea
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Pinotsis N, Leonidas DD, Chrysina ED, Oikonomakos NG, Mavridis IM. The binding of beta- and gamma-cyclodextrins to glycogen phosphorylase b: kinetic and crystallographic studies. Protein Sci 2003; 12:1914-24. [PMID: 12930991 PMCID: PMC2323989 DOI: 10.1110/ps.03149503] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A number of regulatory binding sites of glycogen phosphorylase (GP), such as the catalytic, the inhibitor, and the new allosteric sites are currently under investigation as targets for inhibition of hepatic glycogenolysis under high glucose concentrations; in some cases specific inhibitors are under evaluation in human clinical trials for therapeutic intervention in type 2 diabetes. In an attempt to investigate whether the storage site can be exploited as target for modulating hepatic glucose production, alpha-, beta-, and gamma-cyclodextrins were identified as moderate mixed-type competitive inhibitors of GPb (with respect to glycogen) with K(i) values of 47.1, 14.1, and 7.4 mM, respectively. To elucidate the structural basis of inhibition, we determined the structure of GPb complexed with beta- and gamma-cyclodextrins at 1.94 A and 2.3 A resolution, respectively. The structures of the two complexes reveal that the inhibitors can be accommodated in the glycogen storage site of T-state GPb with very little change of the tertiary structure and provide a basis for understanding their potency and subsite specificity. Structural comparisons of the two complexes with GPb in complex with either maltopentaose (G5) or maltoheptaose (G7) show that beta- and gamma-cyclodextrins bind in a mode analogous to the G5 and G7 binding with only some differences imposed by their cyclic conformations. It appears that the binding energy for stabilization of enzyme complexes derives from hydrogen bonding and van der Waals contacts to protein residues. The binding of alpha-cyclodextrin and octakis (2,3,6-tri-O-methyl)-gamma-cyclodextrin was also investigated, but none of them was bound in the crystal; moreover, the latter did not inhibit the phosphorylase reaction.
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Affiliation(s)
- Nikos Pinotsis
- Institute of Physical Chemistry, National Center for Scientific Research "Demokritos," Athens, Greece
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