1
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Filippov SK, Khusnutdinov R, Murmiliuk A, Inam W, Zakharova LY, Zhang H, Khutoryanskiy VV. Dynamic light scattering and transmission electron microscopy in drug delivery: a roadmap for correct characterization of nanoparticles and interpretation of results. MATERIALS HORIZONS 2023; 10:5354-5370. [PMID: 37814922 DOI: 10.1039/d3mh00717k] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/11/2023]
Abstract
In this focus article, we provide a scrutinizing analysis of transmission electron microscopy (TEM) and dynamic light scattering (DLS) as the two common methods to study the sizes of nanoparticles with focus on the application in pharmaceutics and drug delivery. Control over the size and shape of nanoparticles is one of the key factors for many biomedical systems. Particle size will substantially affect their permeation through biological membranes. For example, an enhanced permeation and retention effect requires a very narrow range of sizes of nanoparticles (50-200 nm) and even a minor deviation from these values will substantially affect the delivery of drug nanocarriers to the tumour. However, amazingly a great number of research papers in pharmaceutics and drug delivery report a striking difference in nanoparticle size measured by the two most popular experimental techniques (TEM and DLS). In some cases, this difference was reported to be 200-300%, raising the question of which size measurement result is more trustworthy. In this focus article, we primarily focus on the physical aspects that are responsible for the routinely observed mismatch between TEM and DLS results. Some of these factors such as concentration and angle dependencies are commonly underestimated and misinterpreted. We convincingly show that correctly used experimental procedures and a thorough analysis of results generated using both methods can eliminate the DLS and TEM data mismatch completely or will make the results much closer to each other. Also, we provide a clear roadmap for drug delivery and pharmaceutical researchers to conduct reliable DLS measurements.
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Affiliation(s)
- Sergey K Filippov
- School of Pharmacy, University of Reading, Whiteknights, RG6 6DX Reading, UK.
- Pharmaceutical Sciences Laboratory, Faculty of Science and Engineering, Åbo Akademi University, 20520 Turku, Finland
| | - Ramil Khusnutdinov
- Institute of Pharmacy, Kazan State Medical University, 16 Fatykh Amirkhan, 420126 Kazan, Russian Federation
| | - Anastasiia Murmiliuk
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University, Hlavova 8, 128 00 Prague 2, Czech Republic
| | - Wali Inam
- Pharmaceutical Sciences Laboratory, Faculty of Science and Engineering, Åbo Akademi University, 20520 Turku, Finland
| | - Lucia Ya Zakharova
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 8 Arbuzov Str., 420088 Kazan, Russian Federation
| | - Hongbo Zhang
- Pharmaceutical Sciences Laboratory, Faculty of Science and Engineering, Åbo Akademi University, 20520 Turku, Finland
- Turku Bioscience Centre, University of Turku and Åbo Akademi University, 20520 Turku, Finland
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2
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Kabdushev S, Mun G, Suleimenov I, Alikulov A, Shaikhutdinov R, Kopishev E. Formation of Hydrophobic-Hydrophilic Associates in the N-Vinylpyrrolidone and Vinyl Propyl Ether Copolymer Aqueous Solutions. Polymers (Basel) 2023; 15:3578. [PMID: 37688204 PMCID: PMC10489714 DOI: 10.3390/polym15173578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 08/16/2023] [Accepted: 08/23/2023] [Indexed: 09/10/2023] Open
Abstract
Utilizing turbidimetry data, an examination is conducted on the behavior of solutions containing N-vinylpyrrolidone and vinyl propyl ether copolymer within a temperature range coinciding with the occurrence of a phase transition. The investigation reveals that within specific conditions prevailing in this domain, the emergence of entities denoted as hydrophobic-hydrophilic associates is conceivable. These entities are characterized by the presence of a relatively dense core, upheld by hydrophobic interplays, and they are proficient in effectively dispersing irradiation within the optical spectrum. Encircling this core is a hydrophilic periphery that impedes the formation of insoluble precipitates. The development of such associates transpires when hydrophobic interactions have attained a discernible prominence, although they remain inadequate to counteract the forces that drive the expansion of macromolecular coils. Under these circumstances, the energetically favored course of action entails the constitution of a core for the aforementioned associates, involving discrete segments from diverse macromolecules. Notably, the introduction of an additional constituent (ethanol) to the solution, which selectively mitigates hydrophobic interactions, serves to stabilize the hydrophobic-hydrophilic associations.
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Affiliation(s)
- Sherniyaz Kabdushev
- National Engineering Academy of the Republic of Kazakhstan, Almaty 050010, Kazakhstan; (S.K.); (G.M.); (I.S.); (A.A.)
| | - Grigoriy Mun
- National Engineering Academy of the Republic of Kazakhstan, Almaty 050010, Kazakhstan; (S.K.); (G.M.); (I.S.); (A.A.)
- Department of Chemistry & Technology of Organic Materials, Faculty of Chemistry and Chemical Technology, Polymers and Natural Compounds, Al Farabi Kazakh National University, Almaty 050040, Kazakhstan;
| | - Ibragim Suleimenov
- National Engineering Academy of the Republic of Kazakhstan, Almaty 050010, Kazakhstan; (S.K.); (G.M.); (I.S.); (A.A.)
| | - Adilet Alikulov
- National Engineering Academy of the Republic of Kazakhstan, Almaty 050010, Kazakhstan; (S.K.); (G.M.); (I.S.); (A.A.)
- Department of Chemistry & Technology of Organic Materials, Faculty of Chemistry and Chemical Technology, Polymers and Natural Compounds, Al Farabi Kazakh National University, Almaty 050040, Kazakhstan;
| | - Ramazan Shaikhutdinov
- Department of Chemistry & Technology of Organic Materials, Faculty of Chemistry and Chemical Technology, Polymers and Natural Compounds, Al Farabi Kazakh National University, Almaty 050040, Kazakhstan;
| | - Eldar Kopishev
- Department of Chemistry, Faculty of Natural Sciences, L.N. Gumilyov Eurasian National University, Astana 010000, Kazakhstan
- Department of General and Inorganic Chemistry, Faculty of Natural Sciences, Bukhara State University, Bukhara 705018, Uzbekistan
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3
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Correia JS, Mirón-Barroso S, Hutchings C, Ottaviani S, Somuncuoğlu B, Castellano L, Porter AE, Krell J, Georgiou TK. How does the polymer architecture and position of cationic charges affect cell viability? Polym Chem 2023; 14:303-317. [PMID: 36760606 PMCID: PMC9846193 DOI: 10.1039/d2py01012g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Accepted: 12/06/2022] [Indexed: 12/12/2022]
Abstract
Polymer chemistry, composition and molar mass are factors that are known to affect cytotoxicity, however the influence of polymer architecture has not been investigated systematically. In this study the influence of the position of the cationic charges along the polymer chain on cytotoxicity was investigated while keeping constant the other polymer characteristics. Specifically, copolymers of various architectures, based on a cationic pH responsive monomer, 2-(dimethylamino)ethyl methacrylate (DMAEMA) and a non-ionic hydrophilic monomer, oligo(ethylene glycol)methyl ether methacrylate (OEGMA) were engineered and their toxicity towards a panel of cell lines investigated. Of the seven different polymer architectures examined, the block-like structures were less cytotoxic than statistical or gradient/tapered architectures. These findings will assist in developing future vectors for nucleic acid delivery.
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Affiliation(s)
| | | | | | - Silvia Ottaviani
- The John van Geest Cancer Research Centre, School of Science and Technology, Nottingham Trent UniversityNottingham NG11 8NSUK,Department of Surgery and Cancer, Division of Cancer, Imperial College London, Imperial Centre for Translational and Experimental Medicine (ICTEM)London W12 0NNUK
| | | | - Leandro Castellano
- Department of Surgery and Cancer, Division of Cancer, Imperial College London, Imperial Centre for Translational and Experimental Medicine (ICTEM)London W12 0NNUK,School of Life Sciences, John Maynard Smith Building, University of SussexBrightonUK
| | | | - Jonathan Krell
- Department of Surgery & Cancer, Imperial College LondonUK
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Podaru IA, Stănescu PO, Ginghină R, Stoleriu Ş, Trică B, Şomoghi R, Teodorescu M. Poly(N-vinylpyrrolidone)-Laponite XLG Nanocomposite Hydrogels: Characterization, Properties and Comparison with Divinyl Monomer-Crosslinked Hydrogels. Polymers (Basel) 2022; 14:polym14194216. [PMID: 36236165 PMCID: PMC9571604 DOI: 10.3390/polym14194216] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 10/03/2022] [Accepted: 10/04/2022] [Indexed: 11/12/2022] Open
Abstract
The present work investigates, for the first time, the synthesis and properties of some nanocomposite (NC) hydrogels obtained by the aqueous solution free radical polymerization of N-vinylpyrrolidone (NVP) in the presence of Laponite XLG (XLG) as a crosslinker, in comparison with the corresponding hydrogels prepared by using two conventional crosslinking divinyl monomers: N,N'-methylenebisacrylamide (MBA) and tri(ethylene glycol) divinyl ether (DVE). The structure and properties of the hydrogels were studied by FTIR, TEM, XRD, SEM, swelling and rheological and compressive mechanical measurements. The results showed that DVE and XLG are much better crosslinking agents for the synthesis of PNVP hydrogels than MBA, leading to larger gel fractions and more homogeneous network hydrogels. The hydrogels crosslinked by either DVE or XLG displayed comparable viscoelastic and compressive mechanical properties under the experimental conditions employed. The properties of the XLG-crosslinked hydrogels steadily improved as the clay content increased. The addition of XLG as a second crosslinker together with a divinyl monomer strongly enhanced the material properties in comparison with the hydrogels crosslinked by only one of the crosslinkers involved. The FTIR analyses suggested that the crosslinking of the NC hydrogels was the result of two different interactions occurring between the clay platelets and the PNVP chains. Laponite XLG displayed a uniform distribution within the NC hydrogels, the clay being mostly exfoliated. However, a small number of platelet agglomerations were still present. The PNVP hydrogels described here may find applications for water purification and in the biomedical field as drug delivery systems or wound dressings.
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Affiliation(s)
- Ionela Alice Podaru
- Department of Bioresources and Polymer Science, Faculty of Chemical Engineering and Biotechnologies, Politehnica University of Bucharest, 1–7 Gh. Polizu Str., 011061 Bucharest, Romania
- Armament Systems and Mechatronics Department, Military Technical Academy “Ferdinand I”, 39–49 G. Cosbuc Blvd., 050141 Bucharest, Romania
| | - Paul O. Stănescu
- Department of Bioresources and Polymer Science, Faculty of Chemical Engineering and Biotechnologies, Politehnica University of Bucharest, 1–7 Gh. Polizu Str., 011061 Bucharest, Romania
- Advanced Polymer Materials Group, Politehnica University of Bucharest, 1–7 Gh. Polizu Str., 011061 Bucharest, Romania
| | - Raluca Ginghină
- Chemical Technologies for CBRN Defense Department, Research and Innovation Center for CBRN Defense and Ecology, 225 Olteniţei Ave., 041327 Bucharest, Romania
| | - Ştefania Stoleriu
- Department of Science and Engineering of Oxide Materials and Nanomaterials, Faculty of Chemical Engineering and Biotechnologies, Politehnica University of Bucharest, 1–7 Gh. Polizu Str., 011061 Bucharest, Romania
| | - Bogdan Trică
- National Institute for Research and Development in Chemistry and Petrochemistry—ICECHIM, Spl. Independentei 202, 060021 Bucharest, Romania
| | - Raluca Şomoghi
- National Institute for Research and Development in Chemistry and Petrochemistry—ICECHIM, Spl. Independentei 202, 060021 Bucharest, Romania
- Faculty of Petroleum Technology and Petrochemistry, Petroleum and Gas University of Ploiesti, 39 Bucuresti Blvd., 100680 Ploiesti, Romania
| | - Mircea Teodorescu
- Department of Bioresources and Polymer Science, Faculty of Chemical Engineering and Biotechnologies, Politehnica University of Bucharest, 1–7 Gh. Polizu Str., 011061 Bucharest, Romania
- Correspondence: ; Tel.: +40-7-4590-7871
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5
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Park SC, Sharma G, Kim JC. Synthesis of temperature-responsive P(vinyl pyrrolidone-co-methyl methacrylate) micelle for controlled drug release. J DISPER SCI TECHNOL 2021. [DOI: 10.1080/01932691.2021.2001344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Soo Chan Park
- Department of Biomedical Science & Institute of Bioscience and Biotechnology, Kangwon National University, Chuncheon, Republic of Korea
| | - Garima Sharma
- Department of Biomedical Science & Institute of Bioscience and Biotechnology, Kangwon National University, Chuncheon, Republic of Korea
| | - Jin-Chul Kim
- Department of Biomedical Science & Institute of Bioscience and Biotechnology, Kangwon National University, Chuncheon, Republic of Korea
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6
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Constantinou AP, Zhan B, Georgiou TK. Tuning the Gelation of Thermoresponsive Gels Based on Triblock Terpolymers. Macromolecules 2021. [DOI: 10.1021/acs.macromol.0c02533] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Anna P. Constantinou
- Department of Materials, Imperial College London, Royal School of Mines, Exhibition Road, SW7 2AZ London, U.K
| | - Beini Zhan
- Department of Materials, Imperial College London, Royal School of Mines, Exhibition Road, SW7 2AZ London, U.K
| | - Theoni K. Georgiou
- Department of Materials, Imperial College London, Royal School of Mines, Exhibition Road, SW7 2AZ London, U.K
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7
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Mun G, Moldakhan I, Kabdushev S, Yermukhambetova B, Shaikhutdinov R, Yeligbayeva G. To the Methodology of Phase Transition Temperature Determination in Aqueous Solutions of Thermo-Sensitive Polymers. EURASIAN CHEMICO-TECHNOLOGICAL JOURNAL 2020. [DOI: 10.18321/ectj960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
An advanced methodology of phase transition determination in aqueous solutions of thermo-sensitive polymers by using of the phase portraits method has been suggested. The methodology allows highly accurate determining the temperature when exactly a half of molecules loses solubility (from the maximum number that can go to another phase state under given conditions). It is shown that since phase transition passes usually in a wide enough temperature interval this indicator should be used as a quantitative parameter that characterizes phase transition process. Additionally the suggested methodology allows introducing one more quantitative parameter that reflects a sharpness of phase transition. The methodology is verified by an example of phase transitions study in aqueous solutions of thermo-sensitive copolymers based on N-vinylpyrrolidone and vinyl propyl ether.
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8
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Tazhbayev Y, Mukashev O, Burkeyev M, Lozinsky VI. Synthesis and Comparative Study of Nanoparticles Derived from Bovine and Human Serum Albumins. Polymers (Basel) 2020; 12:polym12061301. [PMID: 32517219 PMCID: PMC7361980 DOI: 10.3390/polym12061301] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 05/31/2020] [Accepted: 06/02/2020] [Indexed: 12/17/2022] Open
Abstract
This study describes the preparation of nanoparticles derived from bovine serum albumin (BSA) in comparison with the formation of nanoparticles composed of human serum albumin (HSA), when the same preparation procedure was used in both cases. To obtain protein nanoparticles, the method of desolvation with ethanol was employed, followed by the stabilization with urea and cysteine. It was shown that, upon transition from HSA to BSA, the particles with smaller sizes and with a narrower polydispersity were formed. The possibility of the immobilization of the antitumor drug hydroxyurea in such protein nanoparticles by adsorption and inclusion methods has been shown. The drug release profile from the polymer matrix was established.
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Affiliation(s)
- Yerkeblan Tazhbayev
- Chemical Materials Science and Nanochemistry Laboratory, Buketov Karaganda State University, Karaganda 100028, Kazakhstan; (O.M.); (M.B.)
- Correspondence: ; Tel.: +7-700-917-32-74; Fax: +7-7212-77-03-84
| | - Olzhas Mukashev
- Chemical Materials Science and Nanochemistry Laboratory, Buketov Karaganda State University, Karaganda 100028, Kazakhstan; (O.M.); (M.B.)
| | - Meiram Burkeyev
- Chemical Materials Science and Nanochemistry Laboratory, Buketov Karaganda State University, Karaganda 100028, Kazakhstan; (O.M.); (M.B.)
| | - Vladimir I. Lozinsky
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow 119991, Russia;
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9
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Oxidation-Responsive Emulsions Stabilized with Poly(Vinyl Pyrrolidone- co-allyl Phenyl Sulfide). Polymers (Basel) 2020; 12:polym12020498. [PMID: 32102468 PMCID: PMC7077715 DOI: 10.3390/polym12020498] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Revised: 02/17/2020] [Accepted: 02/17/2020] [Indexed: 11/25/2022] Open
Abstract
Oxidation-responsive emulsions were obtained by stabilizing mineral oil droplets using amphiphilic poly(vinyl pyrrolidone-co-allyl phenyl sulfide) (P(VP-APS)). 1H nuclear magnetic resonance (NMR) spectroscopy revealed that P(VP-APS) whose APS content was 0%, 3.28%, 3.43% and 4.58% were successfully prepared by free radical reaction and the sulfide of APS was oxidized by H2O2 treatment. X-ray Photoelectron Spectroscopy (XPS) also disclosed that the sulfide of APS was oxidized to sulfone by the oxidizing agent. The optical density of copolymer solutions and the interfacial activity of the copolymers markedly decreased by H2O2 treatment possibly because the sulfide of APS was oxidized and the amphiphilicity of the copolymers were weakened. The increase rate of the oil droplet diameter of the emulsions was outstandingly promoted when H2O2 solution (10%, v/v) was used as an aqueous phase. The phase separation of the emulsions was also expedited by the oxidizing agent. The oxidation of APS and the weakened interfacial activity were thought to be a main reason for the demulsification of P(VP-APS)-stabilized emulsions.
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Constantinou AP, Sam-Soon NF, Carroll DR, Georgiou TK. Thermoresponsive Tetrablock Terpolymers: Effect of Architecture and Composition on Gelling Behavior. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b01251] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Anna P. Constantinou
- Department of Materials, Imperial College London, Royal School of Mines, Exhibition Road, SW7 2AZ London, U.K
| | - Neil F. Sam-Soon
- Department of Materials, Imperial College London, Royal School of Mines, Exhibition Road, SW7 2AZ London, U.K
| | - Dean R. Carroll
- Department of Materials, Imperial College London, Royal School of Mines, Exhibition Road, SW7 2AZ London, U.K
| | - Theoni K. Georgiou
- Department of Materials, Imperial College London, Royal School of Mines, Exhibition Road, SW7 2AZ London, U.K
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11
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Morrison PWJ, Porfiryeva NN, Chahal S, Salakhov IA, Lacourt C, Semina II, Moustafine RI, Khutoryanskiy VV. Crown Ethers: Novel Permeability Enhancers for Ocular Drug Delivery? Mol Pharm 2017; 14:3528-3538. [PMID: 28825493 DOI: 10.1021/acs.molpharmaceut.7b00556] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Crown ethers are cyclic molecules consisting of a ring containing several ether groups. The most common and important members of this series are 12-crown-4 (12C4), 15-crown-5 (15C5), and 18-crown-6 (18C6). These container molecules have the ability to sequester metal ions, and their complexes with drugs are able to traverse cell membranes. This study investigated 12C4, 15C5, and 18C6 for their ability to increase solubility of ocular drugs and enhance their penetration into the cornea. Phase solubility analysis determined crown ethers' ability to enhance the solubility of riboflavin, a drug used for the therapy of keratoconus, and these solutions were investigated for ocular drug permeation enhancing properties. Atomic absorption spectroscopy demonstrated crown ether solutions' ability to sequester Ca2+ from corneal epithelia, and crown ether mediated adsorption of riboflavin into the stroma was investigated. Induced corneal opacity studies assessed potential toxicity of crown ethers. Crown ethers enhanced riboflavin's aqueous solubility and its penetration into in vitro bovine corneas; the smaller sized crown ethers gave greatest enhancement. They were shown to sequester Ca2+ ions from corneal epithelia; doing so loosens cellular membrane tight junctions thus enhancing riboflavin penetration. Induced corneal opacity was similar to that afforded by benzalkonium chloride and less than is produced using polyaminocarboxylic acids. However, in vivo experiments performed in rats with 12C4 did not show any statistically significant permeability enhancement compared to enhancer-free formulation.
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Affiliation(s)
- Peter W J Morrison
- School of Pharmacy, University of Reading , Whiteknights, PO Box 224, Reading, RG6 6AD, United Kingdom
| | - Natalia N Porfiryeva
- Department of Pharmaceutical, Analytical and Toxicological Chemistry, Kazan State Medical University , 49 Butlerov Street, 420012 Kazan, Russian Federation
| | - Sukhmanpreet Chahal
- School of Pharmacy, University of Reading , Whiteknights, PO Box 224, Reading, RG6 6AD, United Kingdom
| | - Ilgiz A Salakhov
- Nanopharma Development Ltd , 100 Vosstaniya Street, 420095, Kazan, Russian Federation
| | - Charlène Lacourt
- E.B.I. (École de Biologie Industrielle) , 32, Boulevard du Port, 95094 Cergy Cedex, France
| | - Irina I Semina
- Central Research Laboratory, Kazan State Medical University , 6/30 Tolstogo Street, 420012 Kazan, Russian Federation
| | - Rouslan I Moustafine
- Department of Pharmaceutical, Analytical and Toxicological Chemistry, Kazan State Medical University , 49 Butlerov Street, 420012 Kazan, Russian Federation.,Central Research Laboratory, Kazan State Medical University , 6/30 Tolstogo Street, 420012 Kazan, Russian Federation
| | - Vitaliy V Khutoryanskiy
- School of Pharmacy, University of Reading , Whiteknights, PO Box 224, Reading, RG6 6AD, United Kingdom
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12
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Zashikhina NN, Volokitina MV, Korzhikov-Vlakh VA, Tarasenko II, Lavrentieva A, Scheper T, Rühl E, Orlova RV, Tennikova TB, Korzhikova-Vlakh EG. Self-assembled polypeptide nanoparticles for intracellular irinotecan delivery. Eur J Pharm Sci 2017; 109:1-12. [PMID: 28735041 DOI: 10.1016/j.ejps.2017.07.022] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Revised: 06/20/2017] [Accepted: 07/18/2017] [Indexed: 11/19/2022]
Abstract
In this research poly(l-lysine)-b-poly(l-leucine) (PLys-b-PLeu) polymersomes were developed. It was shown that the size of nanoparticles depended on pH of self-assembly process and varied from 180 to 650nm. The biodegradation of PLys-b-PLeu nanoparticles was evaluated using in vitro polypeptide hydrolysis in two model enzymatic systems, as well as in human blood plasma. The experiments on the visualization of cellular uptake of rhodamine 6g-loaded and fluorescein-labeled nanoparticles were carried out and the possibility of their penetration into the cells was approved. The cytotoxicity of polymersomes obtained was tested using three cell lines, namely, HEK, NIH-3T3 and A549. It was shown that tested nanoparticles did not demonstrate any cytotoxicity in the concentrations up to 2mg/mL. The encapsulation of specific to colorectal cancer anti-tumor drug irinotecan into developed nanocontainers was performed by means of pH gradient method. The dispersion of drug-loaded polymersomes in PBS was stable at 4°C for a long time (at least 1month) without considerable drug leakage. The kinetics of drug release was thoroughly studied using two model enzymatic systems, human blood serum and PBS solution. The approximation of irinotecan release profiles with different mathematical drug release models was carried out and allowed identification of the release mechanism, as well as the morphological peculiarities of developed particles. The dependence of encapsulation efficiency, as well as maximal loading capacity, on initial drug concentration was studied. The maximal drug loading was found as 320±55μg/mg of polymersomes. In vitro anti-tumoral activity of irinotecan-loaded polymersomes on a colon cancer cell line (Caco-2) was measured and compared to that for free drug.
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Affiliation(s)
- N N Zashikhina
- Institute of Macromolecular Compounds, Russian Academy of Sciences, Bolshoy pr. 31, 199004 St. Petersburg, Russia
| | - M V Volokitina
- Institute of Macromolecular Compounds, Russian Academy of Sciences, Bolshoy pr. 31, 199004 St. Petersburg, Russia
| | - V A Korzhikov-Vlakh
- Institute of Chemistry, Saint-Petersburg State University, Universitetsky pr. 26, 198504 St. Petersburg, Russia
| | - I I Tarasenko
- Institute of Macromolecular Compounds, Russian Academy of Sciences, Bolshoy pr. 31, 199004 St. Petersburg, Russia
| | - A Lavrentieva
- Institute for Technical Chemistry, Leibniz University Hannover, Callinstrasse 5, 30167 Hannover, Germany
| | - T Scheper
- Institute for Technical Chemistry, Leibniz University Hannover, Callinstrasse 5, 30167 Hannover, Germany
| | - E Rühl
- Institute of Chemistry and Biochemistry, Free University of Berlin, Takustraße 3, 14195 Berlin, Germany
| | - R V Orlova
- Medical Faculty, Saint-Petersburg State University, Line 22, 199004 St. Petersburg, Russia
| | - T B Tennikova
- Institute of Chemistry, Saint-Petersburg State University, Universitetsky pr. 26, 198504 St. Petersburg, Russia.
| | - E G Korzhikova-Vlakh
- Institute of Macromolecular Compounds, Russian Academy of Sciences, Bolshoy pr. 31, 199004 St. Petersburg, Russia
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13
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Cook MT, Filippov SK, Khutoryanskiy VV. Synthesis and solution properties of a temperature-responsive PNIPAM–b-PDMS–b-PNIPAM triblock copolymer. Colloid Polym Sci 2017. [DOI: 10.1007/s00396-017-4084-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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14
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Mun GA, Suleimenov IE, Yermukhambetova BB, Vorob’eva NA, Irmukhametova GS. Features of the formation of interpolymer complexes of poly(carboxylic acids) and nonionic polymers in aqueous solutions in the presence of low-molecular-mass electrolytes. POLYMER SCIENCE SERIES A 2016. [DOI: 10.1134/s0965545x16060134] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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15
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Heydari A, Doostan F, Khoshnood H, Sheibani H. Water-soluble cationic poly(β-cyclodextrin-co-guanidine) as a controlled vitamin B2delivery carrier. RSC Adv 2016. [DOI: 10.1039/c6ra01011c] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Vitamin B2(VB2) is effectively incorporated into novel water-soluble cationic β-cyclodextrin (β-CD) polymers in order to improve its physiochemical properties.
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Affiliation(s)
- Abolfazl Heydari
- Department of Chemistry
- Shahid Bahonar University of Kerman
- Kerman
- Iran
- Young Researchers Society
| | - Farideh Doostan
- Physiology Research Center and Department of Nutrition
- Kerman University of Medical Sciences
- Kerman
- Iran
| | - Hamideh Khoshnood
- Department of Chemistry
- Shahid Bahonar University of Kerman
- Kerman
- Iran
| | - Hassan Sheibani
- Department of Chemistry
- Shahid Bahonar University of Kerman
- Kerman
- Iran
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16
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Constantinou AP, Georgiou TK. Thermoresponsive gels based on ABC triblock copolymers: effect of the length of the PEG side group. Polym Chem 2016. [DOI: 10.1039/c5py02072g] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
ABC triblock copolymers of varying compositions and lengths of the PEG side groups were fabricated and their thermoresponsive behaviour was thoroughly investigated.
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Affiliation(s)
- A. P. Constantinou
- Department of Materials
- Imperial College London
- Royal School of Mines
- London
- UK
| | - T. K. Georgiou
- Department of Materials
- Imperial College London
- Royal School of Mines
- London
- UK
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17
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Photo-induced dynamic association of coumarin pendants within amphiphilic random copolymer micelles. Colloid Polym Sci 2014. [DOI: 10.1007/s00396-014-3474-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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18
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Sergeeva O, Vlasov PS, Domnina NS, Bogomolova A, Konarev PV, Svergun DI, Walterova Z, Horsky J, Stepanek P, Filippov SK. Novel thermosensitive telechelic PEGs with antioxidant activity: synthesis, molecular properties and conformational behaviour. RSC Adv 2014. [DOI: 10.1039/c4ra06978a] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
We report on the tailor-made polymer conjugates, which are highly compelling for biomedical applications due to their antioxidant activity and the adjustable thermosensitive properties.
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Affiliation(s)
- Olga Sergeeva
- Institute of Chemistry
- Saint-Petersburg State University
- Russia
| | - Petr S. Vlasov
- Institute of Chemistry
- Saint-Petersburg State University
- Russia
| | - Nina S. Domnina
- Institute of Chemistry
- Saint-Petersburg State University
- Russia
| | | | | | | | | | - Jiri Horsky
- Institute of Macromolecular Chemistry
- Prague, Czech Republic
| | - Petr Stepanek
- Institute of Macromolecular Chemistry
- Prague, Czech Republic
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19
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Thermoresponsive gels based on ABA triblock copolymers: Does the asymmetry matter? ACTA ACUST UNITED AC 2013. [DOI: 10.1002/pola.26674] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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20
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Morrison PWJ, Connon CJ, Khutoryanskiy VV. Cyclodextrin-mediated enhancement of riboflavin solubility and corneal permeability. Mol Pharm 2013; 10:756-62. [PMID: 23294178 DOI: 10.1021/mp3005963] [Citation(s) in RCA: 106] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Cyclodextrins are water-soluble cyclic oligosaccharides consisting of six, seven, and eight α-(1,4)-linked glucopyranose subunits. This study reports the use of different cyclodextrins in eye drop formulations to improve the aqueous solubility and corneal permeability of riboflavin. Riboflavin is a poorly soluble drug with a solubility up to 0.08 mg mL(-1) in deionized water. It is used as a drug topically administered to the eye to mediate UV-induced corneal cross-linking in the treatment of keratoconus. Aqueous solutions of β-cyclodextrin (10-30 mg mL(-1)) can enhance the solubility of riboflavin up to 0.12-0.19 mg mL(-1), whereas the higher concentration of α-cyclodextrin (100 mg mL(-1)) achieved a lower level of enhancement of 0.11 mg mL(-1). The other oligosaccharides were found to be inefficient for this purpose. In vitro diffusion experiments performed with fresh and cryopreserved bovine cornea have demonstrated that β-cyclodextrin enhances riboflavin permeability. The mechanism of this enhancement was examined through microscopic histological analysis of the cornea and is discussed in this paper.
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Affiliation(s)
- Peter W J Morrison
- School of Pharmacy, University of Reading , Whiteknights, P.O. Box 224, Reading, RG6 6AD, United Kingdom
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21
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Ward MA, Georgiou TK. Multicompartment thermoresponsive gels: does the length of the hydrophobic side group matter? Polym Chem 2013. [DOI: 10.1039/c2py21032k] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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22
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The 2nd Annual Irish Drug Delivery Network Conference with UK and Ireland Controlled Release Society: advancing drug delivery. Ther Deliv 2010; 1:505-9. [PMID: 22833963 DOI: 10.4155/tde.10.53] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
This meeting was part funded by Science Foundation Ireland and by the University College Dublin Seed-Funding program, and was an opportunity for the Irish Drug Delivery Network to invite selected internationally-recognized scientists from across Europe onto a program, together with some of its own principal investigators. The meeting was co-promoted by the UK and Ireland Controlled Release Society. Topics included fluorescent dyes for stability testing of proteins, engineering of nano-containers, peptide-polymer conjugates, designing novel biomaterials, oral liquid-emulsion drug delivery systems, barrier modulation for drug delivery to the eye using siRNA, cell-specific targeting in the lungs, hot-melt extrusion and modified cyclodextrins for delivery of siRNA. The conference was attended by 85 researchers and the Irish Drug Delivery Network co-chairs were Caitriona O'Driscoll (University College Cork) and David Brayden (University College Dublin).
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