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Anderson A, Piñeiro Á, García-Fandiño R, O’Connor MS. Cyclodextrins: Establishing building blocks for AI-driven drug design by determining affinity constants in silico. Comput Struct Biotechnol J 2024; 23:1117-1128. [PMID: 38510974 PMCID: PMC10950811 DOI: 10.1016/j.csbj.2024.02.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 02/13/2024] [Accepted: 02/14/2024] [Indexed: 03/22/2024] Open
Abstract
Cyclodextrins (CDs) are cyclic carbohydrate polymers that hold significant promise for drug delivery and industrial applications. Their effectiveness depends on their ability to encapsulate target molecules with strong affinity and specificity, but quantifying affinities in these systems accurately is challenging for a variety of reasons. Computational methods represent an exceptional complement to in vitro assays because they can be employed for existing and hypothetical molecules, providing high resolution structures in addition to a mechanistic, dynamic, kinetic, and thermodynamic characterization. Here, we employ potential of mean force (PMF) calculations obtained from guided metadynamics simulations to characterize the 1:1 inclusion complexes between four different modified βCDs, with different type, number, and location of substitutions, and two sterol molecules (cholesterol and 7-ketocholesterol). Our methods, validated for reproducibility through four independent repeated simulations per system and different post processing techniques, offer new insights into the formation and stability of CD-sterol inclusion complexes. A systematic distinct orientation preference where the sterol tail projects from the CD's larger face and significant impacts of CD substitutions on binding are observed. Notably, sampling only the CD cavity's wide face during simulations yielded comparable binding energies to full-cavity sampling, but in less time and with reduced statistical uncertainty, suggesting a more efficient approach. Bridging computational methods with complex molecular interactions, our research enables predictive CD designs for diverse applications. Moreover, the high reproducibility, sensitivity, and cost-effectiveness of the studied methods pave the way for extensive studies of massive CD-ligand combinations, enabling AI algorithm training and automated molecular design.
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Affiliation(s)
- Amelia Anderson
- Cyclarity Therapeutics, 8001 Redwood Blvd, Novato, CA 94945, USA
- Department of Organic Chemistry, Center for Research in Biological Chemistry and Molecular Materials, Santiago de Compostela University, CIQUS, Spain
- Soft Matter & Molecular Biophysics Group, Department of Applied Physics, Faculty of Physics, University of Santiago de Compostela, Spain
| | - Ángel Piñeiro
- Soft Matter & Molecular Biophysics Group, Department of Applied Physics, Faculty of Physics, University of Santiago de Compostela, Spain
| | - Rebeca García-Fandiño
- Department of Organic Chemistry, Center for Research in Biological Chemistry and Molecular Materials, Santiago de Compostela University, CIQUS, Spain
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Georgiou N, Kakava MG, Routsi EA, Petsas E, Stavridis N, Freris C, Zoupanou N, Moschovou K, Kiriakidi S, Mavromoustakos T. Quercetin: A Potential Polydynamic Drug. Molecules 2023; 28:8141. [PMID: 38138630 PMCID: PMC10745404 DOI: 10.3390/molecules28248141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 12/12/2023] [Accepted: 12/15/2023] [Indexed: 12/24/2023] Open
Abstract
The study of natural products as potential drug leads has gained tremendous research interest. Quercetin is one of those natural products. It belongs to the family of flavonoids and, more specifically, flavonols. This review summarizes the beneficial pharmaceutical effects of quercetin, such as its anti-cancer, anti-inflammatory, and antimicrobial properties, which are some of the quercetin effects described in this review. Nevertheless, quercetin shows poor bioavailability and low solubility. For this reason, its encapsulation in macromolecules increases its bioavailability and therefore pharmaceutical efficiency. In this review, a brief description of the different forms of encapsulation of quercetin are described, and new ones are proposed. The beneficial effects of applying new pharmaceutical forms of nanotechnology are outlined.
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Affiliation(s)
- Nikitas Georgiou
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece; (N.G.); (E.A.R.); (E.P.); (N.S.); (N.Z.); (K.M.); (S.K.)
| | - Margarita Georgia Kakava
- Laboratory of Organic Chemistry and Biochemistry, Department of Chemistry, University of Patras, 26504 Patras, Greece;
| | - Efthymios Alexandros Routsi
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece; (N.G.); (E.A.R.); (E.P.); (N.S.); (N.Z.); (K.M.); (S.K.)
- Center of Excellence for Drug Design and Discovery, National and Kapodistrian University of Athens, 15771 Athens, Greece
| | - Errikos Petsas
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece; (N.G.); (E.A.R.); (E.P.); (N.S.); (N.Z.); (K.M.); (S.K.)
| | - Nikolaos Stavridis
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece; (N.G.); (E.A.R.); (E.P.); (N.S.); (N.Z.); (K.M.); (S.K.)
| | - Christoforos Freris
- Laboratory of Analytical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece;
| | - Nikoletta Zoupanou
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece; (N.G.); (E.A.R.); (E.P.); (N.S.); (N.Z.); (K.M.); (S.K.)
| | - Kalliopi Moschovou
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece; (N.G.); (E.A.R.); (E.P.); (N.S.); (N.Z.); (K.M.); (S.K.)
| | - Sofia Kiriakidi
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece; (N.G.); (E.A.R.); (E.P.); (N.S.); (N.Z.); (K.M.); (S.K.)
- Departamento de Quimica Orgánica, Facultade de Quimica, Universidade de Vigo, 36310 Vigo, Spain
| | - Thomas Mavromoustakos
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece; (N.G.); (E.A.R.); (E.P.); (N.S.); (N.Z.); (K.M.); (S.K.)
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3
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Araj SK, Szeleszczuk Ł. A Review on Cyclodextrins/Estrogens Inclusion Complexes. Int J Mol Sci 2023; 24:ijms24108780. [PMID: 37240133 DOI: 10.3390/ijms24108780] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 05/11/2023] [Accepted: 05/13/2023] [Indexed: 05/28/2023] Open
Abstract
This review focuses on the methods of preparation and biological, physiochemical, and theoretical analysis of the inclusion complexes formed between estrogens and cyclodextrins (CDs). Because estrogens have a low polarity, they can interact with some cyclodextrins' hydrophobic cavities to create inclusion complexes, if their geometric properties are compatible. For the last forty years, estrogen-CD complexes have been widely applied in several fields for various objectives. For example, CDs have been used as estrogen solubilizers and absorption boosters in pharmaceutical formulations, as well as in chromatographic and electrophoretic procedures for their separation and quantification. Other applications include the removal of the endocrine disruptors from environmental materials, the preparation of the samples for mass spectrometric analysis, or solid-phase extractions based on complex formation with CDs. The aim of this review is to gather the most important outcomes from the works related to this topic, presenting the results of synthesis, in silico, in vitro, and in vivo analysis.
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Affiliation(s)
- Szymon Kamil Araj
- Department of Organic and Physical Chemistry, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1 Str., 02-093 Warsaw, Poland
| | - Łukasz Szeleszczuk
- Department of Organic and Physical Chemistry, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1 Str., 02-093 Warsaw, Poland
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Vicatos AI, Hoossen Z, Caira MR. Inclusion complexes of the steroid hormones 17β-estradiol and progesterone with β- and γ-cyclodextrin hosts: syntheses, X-ray structures, thermal analyses and API solubility enhancements. Beilstein J Org Chem 2022; 18:1749-1762. [PMID: 36628264 PMCID: PMC9795861 DOI: 10.3762/bjoc.18.184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Accepted: 12/09/2022] [Indexed: 12/24/2022] Open
Abstract
Overcoming the challenges of poor aqueous solubility of active pharmaceutical ingredients (APIs) is necessary to render them bioavailable. This study addresses the poor solubility of two potent steroid hormones, 17β-estradiol (BES) and progesterone (PRO), via their complexation with two water-soluble native cyclodextrins (CDs) namely β-CD and γ-CD. The hydrated inclusion complexes β-CD·BES, β-CD·PRO, γ-CD·BES and γ-CD·PRO were prepared via kneading and co-precipitation, and 1H NMR spectroscopic analysis of solutions of their pure complex crystals yielded the host-guest stoichiometries 2:1, 2:1, 1:1 and 3:2, respectively. Both powder X-ray diffraction (PXRD) and single-crystal X-ray diffraction (SCXRD) were employed for focused studies of the isostructurality of the CD complexes with known complexes and structural elucidation of the new complexes, respectively. SCXRD analyses of β-CD·BES, β-CD·PRO and γ-CD·PRO at 100(2) K yielded the first crystal structures of CD complexes containing the hormones BES and PRO, while the complex γ-CD·BES was readily shown to be isostructural with γ-CD·PRO by PXRD. Severe disorder of the encapsulated steroid molecules in the respective channels of the CD molecular assemblies was evident, however, preventing their modelling, but combination of the host-guest stoichiometries and water contents of the four hydrated inclusion complexes enabled accurate assignment of the chemical formulae of these ternary systems. Predicted electron counts for the complexed molecules BES and PRO correlated reasonably well with the complex compositions indicated by 1H NMR spectroscopy. Subsequent measurements of the aqueous solubilities of the four complexes confirmed significant solubility improvements effected by encapsulation of the steroids within the CDs, yielding solubility enhancement factors for BES and PRO in the approximate range 5-20.
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Affiliation(s)
- Alexios I Vicatos
- Centre for Supramolecular Chemistry Research (CSCR), Department of Chemistry, University of Cape Town, Rondebosch 7701, South Africa
| | - Zakiena Hoossen
- Centre for Supramolecular Chemistry Research (CSCR), Department of Chemistry, University of Cape Town, Rondebosch 7701, South Africa
| | - Mino R Caira
- Centre for Supramolecular Chemistry Research (CSCR), Department of Chemistry, University of Cape Town, Rondebosch 7701, South Africa
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Dohle W, Asiki H, Gruchot W, Foster PA, Sahota HK, Bai R, Christensen KE, Hamel E, Potter BVL. 2-Difluoromethoxy-Substituted Estratriene Sulfamates: Synthesis, Antiproliferative SAR, Antitubulin Activity, and Steroid Sulfatase Inhibition. ChemMedChem 2022; 17:e202200408. [PMID: 36109340 PMCID: PMC9742152 DOI: 10.1002/cmdc.202200408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2022] [Revised: 09/14/2022] [Indexed: 01/14/2023]
Abstract
2-Difluoromethoxyestratriene derivatives were designed to improve potency and in vivo stability of the drug candidate 2-methoxyestradiol (2ME2). Compound evaluation in vitro against the proliferation of MCF-7 and MDA MB-231 breast cancer cells, as inhibitors of tubulin polymerisation and also steroid sulfatase (STS) both in cell lysates and in whole cells, showed promising activities. In antiproliferative assays 2-difluoromethoxyestradiol was less potent than 2ME2, but its sulfamates were often more potent than their corresponding non-fluorinated analogues. The fluorinated bis-sulfamate is a promising antiproliferative agent in MCF-7 cells (GI50 0.28 μM) vs the known 2-methoxyestradiol-3,17-O,O-bissulfamate (STX140, GI50 0.52 μM), confirming the utility of our approach. Compounds were also evaluated in the NCI 60-cell line panel and the fluorinated bis-sulfamate derivative displayed very good overall activities with a sub-micromolar average GI50 . It was a very potent STS inhibitor in whole JEG-3 cells (IC50 3.7 nM) similar to STX140 (4.2 nM) and additionally interferes with tubulin assembly in vitro and colchicine binding to tubulin. An X-ray study of 2-difluoromethoxy-3-benzyloxyestra-1,3,5(10)-trien-17-one examined conformational aspects of the fluorinated substituent. The known related derivative 2-difluoromethyl-3-sulfamoyloxyestrone was evaluated for STS inhibition in whole JEG-3 cells and showed an excellent IC50 of 55 pM.
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Affiliation(s)
- Wolfgang Dohle
- Medicinal Chemistry & Drug Discovery, Department of Pharmacology, University of Oxford, Mansfield Road, Oxford, OX1 3QT, UK
| | - Hannah Asiki
- Medicinal Chemistry & Drug Discovery, Department of Pharmacology, University of Oxford, Mansfield Road, Oxford, OX1 3QT, UK
| | - Wojciech Gruchot
- Medicinal Chemistry & Drug Discovery, Department of Pharmacology, University of Oxford, Mansfield Road, Oxford, OX1 3QT, UK
| | - Paul A Foster
- Institute of Metabolism & Systems Research, University of Birmingham, 2nd Floor IBR Tower Edgbaston, Birmingham, B15 2TT, UK
- Centre for Endocrinology, Metabolism and Diabetes, University of Birmingham, Birmingham Health Partners, Birmingham, B15 2TT, UK
| | - Havreen K Sahota
- Institute of Metabolism & Systems Research, University of Birmingham, 2nd Floor IBR Tower Edgbaston, Birmingham, B15 2TT, UK
| | - Ruoli Bai
- Molecular Pharmacology Branch, Developmental Therapeutics Program, Division of Cancer Treatment and Diagnosis, National Cancer Institute, Frederick, MD, 21702, USA
| | - Kirsten E Christensen
- Chemical Crystallography, Department of Chemistry, University of Oxford, Mansfield Road, Oxford, OX1 3TA, UK
| | - Ernest Hamel
- Molecular Pharmacology Branch, Developmental Therapeutics Program, Division of Cancer Treatment and Diagnosis, National Cancer Institute, Frederick, MD, 21702, USA
| | - Barry V L Potter
- Medicinal Chemistry & Drug Discovery, Department of Pharmacology, University of Oxford, Mansfield Road, Oxford, OX1 3QT, UK
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Alternative Methotrexate Oral Formulation: Enhanced Aqueous Solubility, Bioavailability, Photostability, and Permeability. Pharmaceutics 2022; 14:pharmaceutics14102073. [PMID: 36297508 PMCID: PMC9609692 DOI: 10.3390/pharmaceutics14102073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 09/21/2022] [Accepted: 09/24/2022] [Indexed: 11/17/2022] Open
Abstract
The poor aqueous solubility and/or permeability and thereby limited bioavailability largely restricts the pharmaco-therapeutic implications of potent anticancer drugs such as methotrexate (MTX). Furthermore, MTX’s inherently unstable nature makes it difficult to develop a viable oral formulation. In this study we developed the spray-dried amorphous inclusion complexes of MTX with native β-cyclodextrin (β-CD) and its derivatives, namely HP-β-CD, M-β-CD, and DM-β-CD to enhance the aqueous solubility, photostability, permeability, and oral bioavailability of MTX in rats. Our findings show that the 1:1 stoichiometry ratio of MTX and CDs improves the aqueous solubility, stability, and pharmacokinetic profiles of the drug, the better results being obtained particularly with DM-β-CD as a host, which has a higher complexation ability with the drug compared to other β-CDs. Specifically, the pharmacokinetic analysis demonstrated 2.20- and 3.29-fold increments in AUC and Cmax, respectively, in comparison to free MTX. Even though the absorptive permeability of MTX and MTX/DM-β-CD inclusion complexes was similar, the efflux of the absorbed MTX from ICs was significantly lower compared to the free MTX (4.6- vs. 8.0-fold). Furthermore, the physicochemical characterization employing SEM, DSC, and PXRD confirmed the transformation of crystalline MTX to its amorphous state. In solution, 1H NMR studies revealed that MTX embedded into the DM-β-CD cavity resulting in both H-3 and H-5 chemical shifts implied the presence of intermolecular interaction between the drug and CD moiety. It was, therefore, evident that an MTX IC could be a successful oral formulation technique, preventing MTX degradation and enhancing its pharmacologically relevant properties.
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Mahalapbutr P, Charoenwongpaiboon T, Phongern C, Kongtaworn N, Hannongbua S, Rungrotmongkol T. Molecular encapsulation of a key odor-active 2-acetyl-1-pyrroline in aromatic rice with β-cyclodextrin derivatives. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116394] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Giri BR, Lee J, Lim DY, Kim DW. Docetaxel/dimethyl-β-cyclodextrin inclusion complexes: preparation, in vitro evaluation and physicochemical characterization. Drug Dev Ind Pharm 2021; 47:319-328. [PMID: 33576707 DOI: 10.1080/03639045.2021.1879840] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Despite the development in novel drug delivery techniques and synthesis of multifunctional excipients, oral delivery of hydrophobic drug like docetaxel (DTX) is still challenging. The present work investigates the inclusion complexation of DTX, and dimethyl-β-cyclodextrin (DM-β-CD) to improve the solubility, dissolution and permeability of the drug. Amongst the native and modified β-cyclodextrins, DM-β-CD showed the highest solubility of DTX. Solid binary inclusion complex (IC) of DTX with DM-β-CD was prepared by solvent evaporation technique and thoroughly characterized for solubility, dissolution, permeability, scanning electron microscopy (SEM), differential scanning calorimetry (DSC), X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR) and nuclear magnetic resonance (1H NMR). The aqueous solubility and in vitro dissolution rate of DTX/DM-β-CD IC were markedly increased by 76.04- and 3.55-fold compared to free DTX powder. The permeability of DTX/DM-β-CD IC showed similar absorptive permeability but decreased efflux from the absorbed DTX, compared to pure DTX. Further, physicochemical studies of IC revealed the change of crystalline state DTX to its amorphous form. Moreover, FT-IR and 1H NMR results indicate the formation of true inclusion complex between DTX and DM-β-CD at 1:1 molar ratio. Collectively, solid inclusion complexes prepared by spray drying method can be an effective strategy to enhance the biopharmaceutical performance of a highly hydrophobic drug DTX.
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Affiliation(s)
- Bhupendra Raj Giri
- Vessel-Organ Interaction Research Center (VOICE, MRC), BK21 FOUR Community-Based Intelligent Novel Drug Discovery Education Unit, College of Pharmacy and Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu, South Korea
| | - Jaehyeok Lee
- Vessel-Organ Interaction Research Center (VOICE, MRC), BK21 FOUR Community-Based Intelligent Novel Drug Discovery Education Unit, College of Pharmacy and Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu, South Korea
| | - Dong Yu Lim
- College of Pharmacy, Dankook University, Cheon-an, South Korea
| | - Dong Wuk Kim
- Vessel-Organ Interaction Research Center (VOICE, MRC), BK21 FOUR Community-Based Intelligent Novel Drug Discovery Education Unit, College of Pharmacy and Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu, South Korea
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9
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Vicatos AI, Caira MR. Cyclodextrin complexes of the anticonvulsant agent valproic acid. CrystEngComm 2021. [DOI: 10.1039/d1ce01024g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Valproic acid (VAL) forms complexes with natural and derivatised cyclodextrins (CDs). Stoichiometries were deduced from NMR spectra, thermal and X-ray diffraction analyses, the latter revealing modes of VAL inclusion in CDs for the first time.
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Affiliation(s)
- A. I. Vicatos
- Centre for Supramolecular Chemistry Research, Department of Chemistry, University of Cape Town, Rondebosch 7701, South Africa
| | - M. R. Caira
- Centre for Supramolecular Chemistry Research, Department of Chemistry, University of Cape Town, Rondebosch 7701, South Africa
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10
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The apparent formation constants of asiatic acid and its derivatives existing in Centella asiatica with cyclodextrins by HPLC. J INCL PHENOM MACRO 2020. [DOI: 10.1007/s10847-020-01026-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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11
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Barton B, Jooste DV, Senekal U, Hosten EC. Four xanthenyl-derived compounds: a comparative investigation of their host behaviour in the presence potential saturated and unsaturated heterocyclic six-membered ring guest solvents. J INCL PHENOM MACRO 2020. [DOI: 10.1007/s10847-020-00997-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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12
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Kučáková K, Dolenský B. Molecular structure study of a heptakis(2,3,6-tri-O-methyl)-β-cyclodextrin complex of cholesterol. Steroids 2020; 155:108555. [PMID: 31866545 DOI: 10.1016/j.steroids.2019.108555] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2019] [Revised: 11/27/2019] [Accepted: 12/06/2019] [Indexed: 12/23/2022]
Abstract
Heptakis(2,3,6-tri-O-methyl)-β-cyclodextrin (2) and cholesterol form a water-soluble complex 3. We performed several NMR studies, particularly 1H, 13C, 2D NOESY and DOSY, at various temperatures on 500 and 950 MHz instruments. We discovered that the complex 3 is unstable above 57 °C in heavy water, while it is kinetically stable enough to be studied by NMR in detail at 1 °C. We demonstrated the formation of a face-to-face 2:1 complex with a binding constant of approximately 2.2 × 106 M-2.
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Affiliation(s)
- Karolína Kučáková
- University of Chemistry and Technology Prague, Department of Analytical Chemistry, Technická 5, 166 28 Prague 6, Czech Republic
| | - Bohumil Dolenský
- University of Chemistry and Technology Prague, Department of Analytical Chemistry, Technická 5, 166 28 Prague 6, Czech Republic.
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Caira MR. Cyclodextrin Inclusion of Medicinal Compounds for Enhancement of their Physicochemical and Biopharmaceutical Properties. Curr Top Med Chem 2019; 19:2357-2370. [PMID: 31648636 DOI: 10.2174/1568026619666191018101524] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Revised: 08/07/2019] [Accepted: 08/26/2019] [Indexed: 12/18/2022]
Abstract
Owing to their wide structural diversity and unique complexing properties, cyclodextrins (CDs) find manifold applications in drug discovery and development. The focus of this mini-review is on their uses as 'enabling excipients' both in the context of early drug discovery and in subsequent optimisation of drug performance. Features highlighted here include descriptions of the structures of CDs, synthetic derivatisation to fine-tune their properties, the nature of inclusion complexation of drugs within the CD cavity, methodology for the study of free and complexed hosts in the solid state and in solution, the inherent pharmacological activity of several CDs and its utility, novel CD-based drug delivery systems, and the role of CDs in drug discovery and optimisation. Illustrative examples are generally based on research reported during the last two decades. Application of CDs to the optimisation of the performance of established drugs is commonplace, but there are many opportunities for the intervention of CDs during the early stages of drug discovery, which could guide the selection of suitable candidates for development, thereby contributing to reducing the attrition rate of new molecular entities.
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Affiliation(s)
- Mino R Caira
- Department of Chemistry, Centre for Supramolecular Chemistry Research, University of Cape Town, Rondebosch 7701, South Africa
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14
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Lobatto VL, Argüello GA, Caira MR, Bujan EI. Trifluralin and two of its photodegradation products: Crystal structures and phase solubility/UV studies with cyclodextrins. J PHYS ORG CHEM 2019. [DOI: 10.1002/poc.4006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Virginia L. Lobatto
- Instituto de Investigaciones en Fisicoquímica de Córdoba (INFIQC), CONICET, Departamento de Química Orgánica, Facultad de Ciencias QuímicasUniversidad Nacional de Córdoba Córdoba Argentina
| | - Gustavo A. Argüello
- Instituto de Investigaciones en Fisicoquímica de Córdoba (INFIQC), CONICET, Departamento de Fisicoquímica, Facultad de Ciencias QuímicasUniversidad Nacional de Córdoba Córdoba Argentina
| | - Mino R. Caira
- Department of ChemistryUniversity of Cape Town Rondebosch South Africa
| | - Elba I. Bujan
- Instituto de Investigaciones en Fisicoquímica de Córdoba (INFIQC), CONICET, Departamento de Química Orgánica, Facultad de Ciencias QuímicasUniversidad Nacional de Córdoba Córdoba Argentina
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15
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Lavorgna M, Iacovino R, Russo C, Di Donato C, Piscitelli C, Isidori M. A New Approach for Improving the Antibacterial and Tumor Cytotoxic Activities of Pipemidic Acid by Including It in Trimethyl-β-cyclodextrin. Int J Mol Sci 2019; 20:E416. [PMID: 30669399 PMCID: PMC6359225 DOI: 10.3390/ijms20020416] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Revised: 01/10/2019] [Accepted: 01/16/2019] [Indexed: 01/05/2023] Open
Abstract
Pipemidic acid (HPPA) is a quinolone antibacterial agent used mostly to treat gram-negative infections of the urinary tract, but its therapeutic use is limited because of its low solubility. Thus, to improve drug solubility, natural cyclodextrins (CDs) are used for their ability of including guest molecules within their cavities. The aim of this work was to evaluate the antibacterial activity and the preliminary anticancer activity of HPPA included into Heptakis (2,3,6-tri-O-methyl)-β-cyclodextrin (TRIMEB) as a possible approach for a new innovative formulation. The inclusion complex of HPPA with TRIMEB was prepared in solid state by the kneading method and confirmed by FT-IR and powered X-ray diffraction. The association in aqueous solutions of pipemidic acid with TRIMEB was investigated by UV-Vis spectroscopy. Job's plots have been drawn by UV-visible spectroscopy to confirm the 1:1 stoichiometry of the host⁻guest assembly. The antibacterial activity of HPPA, TRIMEB and of their complex was tested on Escherichia coli, Pseudomonas aeruginosa, and Staphilococcus aureus. The complex was able to increase 47.36% of the median antibacterial activity of the free HPPA against E. coli (IC50 = 249 µM vs. 473 µM). Furthermore, these samples were tested on HepG-2 and MCF-7. After 72 h, the median tumoral cytotoxicity exerted by the complex was increased by 78.08% and 94.27% for HepG-2 and MCF-7 respectively, showing a stronger bioactivity of the complex than the single HAPPA.
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Affiliation(s)
- Margherita Lavorgna
- Dipartimento di Scienze e Tecnologie Ambientali, Biologiche e Farmaceutiche, Università della Campania "L. Vanvitelli", Via Vivaldi 43, I-81100 Caserta, Italy.
| | - Rosa Iacovino
- Dipartimento di Scienze e Tecnologie Ambientali, Biologiche e Farmaceutiche, Università della Campania "L. Vanvitelli", Via Vivaldi 43, I-81100 Caserta, Italy.
| | - Chiara Russo
- Dipartimento di Scienze e Tecnologie Ambientali, Biologiche e Farmaceutiche, Università della Campania "L. Vanvitelli", Via Vivaldi 43, I-81100 Caserta, Italy.
| | - Cristina Di Donato
- Dipartimento di Scienze e Tecnologie Ambientali, Biologiche e Farmaceutiche, Università della Campania "L. Vanvitelli", Via Vivaldi 43, I-81100 Caserta, Italy.
| | - Concetta Piscitelli
- Dipartimento di Scienze e Tecnologie Ambientali, Biologiche e Farmaceutiche, Università della Campania "L. Vanvitelli", Via Vivaldi 43, I-81100 Caserta, Italy.
| | - Marina Isidori
- Dipartimento di Scienze e Tecnologie Ambientali, Biologiche e Farmaceutiche, Università della Campania "L. Vanvitelli", Via Vivaldi 43, I-81100 Caserta, Italy.
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16
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Theoretical and Experimental Studies on Inclusion Complexes of Pinostrobin and β-Cyclodextrins. Sci Pharm 2018; 86:scipharm86010005. [PMID: 29385698 PMCID: PMC5874535 DOI: 10.3390/scipharm86010005] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2017] [Revised: 01/20/2018] [Accepted: 01/22/2018] [Indexed: 12/23/2022] Open
Abstract
Pinostrobin (PNS) belongs to the flavanone subclass of flavonoids which shows several biological activities such as anti-inflammatory, anti-cancerogenic, anti-viral and anti-oxidative effects. Similar to other flavonoids, PNS has a quite low water solubility. The purpose of this work is to improve the solubility and the biological activities of PNS by forming inclusion complexes with β-cyclodextrin (βCD) and its derivatives, heptakis-(2,6-di-O-methyl)-β-cyclodextrin (2,6-DMβCD) and (2-hydroxypropyl)-β-cyclodextrin (HPβCD). The AL-type diagram of the phase solubility studies of PNS exhibited the formed inclusion complexes with the 1:1 molar ratio. Inclusion complexes were prepared by the freeze-drying method and were characterized by differential scanning calorimetry (DSC). Two-dimensional nuclear magnetic resonance (2D-NMR) and steered molecular dynamics (SMD) simulation revealed two different binding modes of PNS, i.e., its phenyl- (P-PNS) and chromone- (C-PNS) rings preferably inserted into the cavity of βCD derivatives whilst only one orientation of PNS, where the C-PNS ring is inside the cavity, was detected in the case of the parental βCD. All PNS/βCDs complexes had a higher dissolution rate than free PNS. Both PNS and its complexes significantly exerted a lowering effect on the IL-6 secretion in LPS-stimulated macrophages and showed a moderate cytotoxic effect against MCF-7 and HeLa cancer cell lines in vitro.
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17
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Oliva E, Mathiron D, Bertaut E, Landy D, Cailleu D, Pilard S, Clément C, Courot E, Bonnet V, Djedaïni-Pilard F. Physico-chemical studies of resveratrol, methyl-jasmonate and cyclodextrin interactions: an approach to resveratrol bioproduction optimization. RSC Adv 2018; 8:1528-1538. [PMID: 35685942 PMCID: PMC9128506 DOI: 10.1039/c7ra11619e] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Accepted: 12/18/2017] [Indexed: 12/21/2022] Open
Abstract
trans-Resveratrol (RSV) is a natural phenolic molecule of the stilbene family known for its anti-oxidant properties in the field of nutraceuticals and cosmetics. Its production by grapevine cell suspensions is induced by the addition to the culture medium of elicitor compounds, methyl jasmonate (MeJA) and cyclodextrins (CDs). Physico-chemical studies were performed to understand the mechanism of action of CDs on this bioproduction of RSV. Inclusion complexes of RSV in CDs were first observed and then interactions with MeJA were identified using various analytical techniques such as UV and nuclear magnetic resonance (NMR) spectroscopies, mass spectrometry (MS) and isothermal titration calorimetry (ITC).
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Affiliation(s)
- E Oliva
- Laboratoire de Glycochimie des Antimicrobiens et des Agroressources, LG2A UMR 7378 CNRS, Université de Picardie Jules Verne 33 rue Saint-Leu 80039 Amiens France
- Plateforme-analytique, Université de Picardie Jules Verne 33 rue Saint-Leu 80039 Amiens France
- SFR Condorcet "Agrosciences Environnement et Développement Durable" FR CNRS 3417, UFR Sciences Exactes et Naturelles BP 1039 Moulin de la Housse - Bâtiment 18 51687 Reims Cedex 02 France
| | - D Mathiron
- Plateforme-analytique, Université de Picardie Jules Verne 33 rue Saint-Leu 80039 Amiens France
- SFR Condorcet "Agrosciences Environnement et Développement Durable" FR CNRS 3417, UFR Sciences Exactes et Naturelles BP 1039 Moulin de la Housse - Bâtiment 18 51687 Reims Cedex 02 France
| | - E Bertaut
- Unité de Chimie Environnementale et Interactions sur le Vivant (UCEIV, EA 4492), ULCO F-59140 Dunkerque France
- SFR Condorcet "Agrosciences Environnement et Développement Durable" FR CNRS 3417, UFR Sciences Exactes et Naturelles BP 1039 Moulin de la Housse - Bâtiment 18 51687 Reims Cedex 02 France
| | - D Landy
- Unité de Chimie Environnementale et Interactions sur le Vivant (UCEIV, EA 4492), ULCO F-59140 Dunkerque France
- SFR Condorcet "Agrosciences Environnement et Développement Durable" FR CNRS 3417, UFR Sciences Exactes et Naturelles BP 1039 Moulin de la Housse - Bâtiment 18 51687 Reims Cedex 02 France
| | - D Cailleu
- Plateforme-analytique, Université de Picardie Jules Verne 33 rue Saint-Leu 80039 Amiens France
- SFR Condorcet "Agrosciences Environnement et Développement Durable" FR CNRS 3417, UFR Sciences Exactes et Naturelles BP 1039 Moulin de la Housse - Bâtiment 18 51687 Reims Cedex 02 France
| | - S Pilard
- Plateforme-analytique, Université de Picardie Jules Verne 33 rue Saint-Leu 80039 Amiens France
- SFR Condorcet "Agrosciences Environnement et Développement Durable" FR CNRS 3417, UFR Sciences Exactes et Naturelles BP 1039 Moulin de la Housse - Bâtiment 18 51687 Reims Cedex 02 France
| | - C Clément
- Unité de Recherche Vignes et Vins de Champagne, (URVVC, EA 4707), Université de Reims Champagne-Ardenne, UFR Sciences BP 1039, Moulin de la Housse 51687 Reims France
- SFR Condorcet "Agrosciences Environnement et Développement Durable" FR CNRS 3417, UFR Sciences Exactes et Naturelles BP 1039 Moulin de la Housse - Bâtiment 18 51687 Reims Cedex 02 France
| | - E Courot
- Unité de Recherche Vignes et Vins de Champagne, (URVVC, EA 4707), Université de Reims Champagne-Ardenne, UFR Sciences BP 1039, Moulin de la Housse 51687 Reims France
- SFR Condorcet "Agrosciences Environnement et Développement Durable" FR CNRS 3417, UFR Sciences Exactes et Naturelles BP 1039 Moulin de la Housse - Bâtiment 18 51687 Reims Cedex 02 France
| | - V Bonnet
- Laboratoire de Glycochimie des Antimicrobiens et des Agroressources, LG2A UMR 7378 CNRS, Université de Picardie Jules Verne 33 rue Saint-Leu 80039 Amiens France
- SFR Condorcet "Agrosciences Environnement et Développement Durable" FR CNRS 3417, UFR Sciences Exactes et Naturelles BP 1039 Moulin de la Housse - Bâtiment 18 51687 Reims Cedex 02 France
| | - F Djedaïni-Pilard
- Laboratoire de Glycochimie des Antimicrobiens et des Agroressources, LG2A UMR 7378 CNRS, Université de Picardie Jules Verne 33 rue Saint-Leu 80039 Amiens France
- SFR Condorcet "Agrosciences Environnement et Développement Durable" FR CNRS 3417, UFR Sciences Exactes et Naturelles BP 1039 Moulin de la Housse - Bâtiment 18 51687 Reims Cedex 02 France
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18
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Furlan AL, Buchoux S, Miao Y, Banchet V, Létévé M, Lambertyn V, Michel J, Sarazin C, Bonnet V. Nanoparticles based on lipidyl-β-cyclodextrins: synthesis, characterization, and experimental and computational biophysical studies for encapsulation of atazanavir. NEW J CHEM 2018. [DOI: 10.1039/c8nj03237h] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
After showing tensioactive properties of the compounds, the formation, stability and morphology of nanoparticles were demonstrated.
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Affiliation(s)
- Aurélien L. Furlan
- Génie Enzymatique et Cellulaire (GEC)
- UMR 7025 CNRS/Université de Picardie Jules Verne
- 80039 Cedex 1 Amiens
- France
| | - Sébastien Buchoux
- Génie Enzymatique et Cellulaire (GEC)
- UMR 7025 CNRS/Université de Picardie Jules Verne
- 80039 Cedex 1 Amiens
- France
| | - Yong Miao
- Laboratoire de Glycochimie des Antimicrobiens et des Agroressources (LG2A)
- UMR 7378 CNRS/Université de Picardie Jules Verne
- ICP FR3085 CNRS
- 80039 Cedex 1 Amiens
- France
| | - Vincent Banchet
- Laboratoire de Recherche en Nanosciences (LRN)
- EA 4682 Université de Reims Champagne-Ardenne
- 51685 Reims Cedex 2
- France
| | - Mathieu Létévé
- Laboratoire de Glycochimie des Antimicrobiens et des Agroressources (LG2A)
- UMR 7378 CNRS/Université de Picardie Jules Verne
- ICP FR3085 CNRS
- 80039 Cedex 1 Amiens
- France
| | - Virginie Lambertyn
- Génie Enzymatique et Cellulaire (GEC)
- UMR 7025 CNRS/Université de Picardie Jules Verne
- 80039 Cedex 1 Amiens
- France
| | - Jean Michel
- Laboratoire de Recherche en Nanosciences (LRN)
- EA 4682 Université de Reims Champagne-Ardenne
- 51685 Reims Cedex 2
- France
- Plate-forme d’Imagerie Cellulaire et Tissulaire (PICT)
| | - Catherine Sarazin
- Génie Enzymatique et Cellulaire (GEC)
- UMR 7025 CNRS/Université de Picardie Jules Verne
- 80039 Cedex 1 Amiens
- France
| | - Véronique Bonnet
- Laboratoire de Glycochimie des Antimicrobiens et des Agroressources (LG2A)
- UMR 7378 CNRS/Université de Picardie Jules Verne
- ICP FR3085 CNRS
- 80039 Cedex 1 Amiens
- France
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19
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Cyclodextrin-Steroid Interactions and Applications to Pharmaceuticals, Food, Biotechnology and Environment. ENVIRONMENTAL CHEMISTRY FOR A SUSTAINABLE WORLD 2018. [DOI: 10.1007/978-3-319-76162-6_2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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20
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Angiolini L, Agnes M, Cohen B, Yannakopoulou K, Douhal A. Formation, characterization and pH dependence of rifampicin: heptakis(2,6-di-O-methyl)-β-cyclodextrin complexes. Int J Pharm 2017; 531:668-675. [PMID: 28596140 DOI: 10.1016/j.ijpharm.2017.06.015] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Revised: 05/17/2017] [Accepted: 06/05/2017] [Indexed: 01/22/2023]
Abstract
Rifampicin (Rif) is a broad spectrum antibiotic used as a first line agent in the treatment of mycobacterial infections. However, its low solubility and reduced stability in water limit its bioavailability, thus requiring the use of complex formulations. Here, we present a systematic study of Rif in complex with a methylated cyclodextrin, heptakis(2,6-di-O-methyl)-β-cyclodextrin (DIMEB), in phosphate buffer using a combination of nuclear magnetic resonance (NMR) and steady-state UV-vis spectroscopic methods. An increase in the stability and solubility of Rif in complex with DIMEB was observed in buffered solutions (phosphate, PBS). At neutral pH the presence of three distinguishable binding sites was revealed, demonstrating that DIMEB forms predominantly a stable 1:1 (K∼3000M-1) complex at the piperazine site of Rif, while at acidic pH the binding constant decreases significantly (K∼400M-1) due to protonation of the piperazine, thus inducing a release of Rif. The reported results provide new and relevant information for the stability and solubility of Rif in aqueous solution when forming a complex with DIMEB. Furthermore they contribute to clarify Rif interactions with cyclodextrin carriers, thus providing the basis for the development of new methylated cyclodextrin that can efficiently encapsulate and deliver Rif and derivatives of its family.
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Affiliation(s)
- Lorenzo Angiolini
- Departamento de Química Física, Facultad de Ciencias del Medio Ambiente y Bioquímica and INAMOL, Universidad de Castilla-La Mancha, Avenida Carlos III, S/N, 45071 Toledo, Spain
| | - Marco Agnes
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research "Demokritos", Patr. Grigoriou E' & 27 Neapoleos str., 15341, Agia Paraskevi, Greece
| | - Boiko Cohen
- Departamento de Química Física, Facultad de Ciencias del Medio Ambiente y Bioquímica and INAMOL, Universidad de Castilla-La Mancha, Avenida Carlos III, S/N, 45071 Toledo, Spain
| | - Konstantina Yannakopoulou
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research "Demokritos", Patr. Grigoriou E' & 27 Neapoleos str., 15341, Agia Paraskevi, Greece.
| | - Abderrazzak Douhal
- Departamento de Química Física, Facultad de Ciencias del Medio Ambiente y Bioquímica and INAMOL, Universidad de Castilla-La Mancha, Avenida Carlos III, S/N, 45071 Toledo, Spain.
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21
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Caira MR, Bourne SA, Mzondo B. Encapsulation of the Antioxidant R-(+)-α-Lipoic Acid in Permethylated α- and β-Cyclodextrins: Thermal and X-ray Structural Characterization of the 1:1 Inclusion Complexes. Molecules 2017; 22:E866. [PMID: 28545253 PMCID: PMC6152681 DOI: 10.3390/molecules22060866] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Revised: 05/16/2017] [Accepted: 05/16/2017] [Indexed: 11/16/2022] Open
Abstract
The naturally occurring compound α-lipoic acid (ALA) is implicated in manifold critical biological roles and its potent antioxidant properties and potential for treatment of various diseases have led to its widespread use as a dietary supplement. However, shortcomings of poor aqueous solubility and low thermal stability have hampered its development as a medicinal agent, prompting the use of cyclodextrins (CDs) to address these problems. The paucity of published structural data on the nature of the interactions between ALA and CDs motivated the present study, which describes the synthesis and X-ray structural elucidation of crystalline inclusion complexes between the biologically relevant R-(+)-α-lipoic acid (RALA) and the host molecules permethylated α-CD (TMA) and permethylated β-CD (TMB). Single crystal X-ray diffraction of TMA·RALA·6H₂O and TMB·RALA revealed significantly different orientations of the RALA molecule within the TMA and TMB cavities, but in both cases the guest molecule is fully encapsulated by the respective parent host molecules and residues of CD molecules of neighboring complex units. While pure RALA melted at 46-48 °C, combined thermal analysis techniques indicated that on heating the respective complexes, the release of RALA occurred at significantly higher onset temperatures, in the range 150-170 °C.
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Affiliation(s)
- Mino R Caira
- Centre for Supramolecular Chemistry Research, Department of Chemistry, University of Cape Town, Rondebosch 7701, South Africa.
| | - Susan A Bourne
- Centre for Supramolecular Chemistry Research, Department of Chemistry, University of Cape Town, Rondebosch 7701, South Africa.
| | - Buntubonke Mzondo
- Centre for Supramolecular Chemistry Research, Department of Chemistry, University of Cape Town, Rondebosch 7701, South Africa.
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22
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Ye L, Huang NL, Du YX, Schneider M, Du WD. Succinyl-β-cyclodextrin modified gold biochip improved seroimmunological detection sensitivity for Lyme disease. Anal Chim Acta 2017; 953:48-56. [DOI: 10.1016/j.aca.2016.11.050] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Revised: 11/11/2016] [Accepted: 11/29/2016] [Indexed: 10/20/2022]
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23
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Pillai GJ, Paul-Prasanth B, Nair SV, Menon D. Influence of surface passivation of 2-Methoxyestradiol loaded PLGA nanoparticles on cellular interactions, pharmacokinetics and tumour accumulation. Colloids Surf B Biointerfaces 2016; 150:242-249. [PMID: 27923186 DOI: 10.1016/j.colsurfb.2016.11.040] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2016] [Revised: 11/07/2016] [Accepted: 11/28/2016] [Indexed: 01/16/2023]
Abstract
In the present work, 2-Methoxyestradiol [2ME2] loaded PLGA nanoparticles [NPs] were stabilized with Casein or poly(ethylene glycol) [PEG] and evaluated for its cellular interactions, pharmacokinetics and tumour accumulation. Surface stabilized PLGA nanoparticles prepared through a modified emulsion route possessed similar size, surface charge, drug loading and release characteristics. Particle-cell interactions as well as the anti-angiogenesis activity were similar for both nanoformulations in vitro. However, in vivo pharmacokinetics and tumour accumulation of the drug were substantially improved for the PEGylated nanoformulation. Reduced protein binding was observed for PEG stabilized PLGA NPs. Thus, it was demonstrated that nanoencapsulation of 2-ME2 within PEGylated PLGA nanocarrier could improve its half-life and plasma concentration and thereby increase the tumour accumulation.
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Affiliation(s)
- Gopikrishna J Pillai
- Amrita Centre for Nanosciences and Molecular Medicine, Amrita Vishwa Vidyapeetham, Kochi - 682041, Kerala, India
| | - Bindhu Paul-Prasanth
- Amrita Centre for Nanosciences and Molecular Medicine, Amrita Vishwa Vidyapeetham, Kochi - 682041, Kerala, India
| | - Shantikumar V Nair
- Amrita Centre for Nanosciences and Molecular Medicine, Amrita Vishwa Vidyapeetham, Kochi - 682041, Kerala, India.
| | - Deepthy Menon
- Amrita Centre for Nanosciences and Molecular Medicine, Amrita Vishwa Vidyapeetham, Kochi - 682041, Kerala, India.
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