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Rata DM, Cadinoiu AN, Atanase LI, Popa M, Mihai CT, Vochita G. Peptide-functionalized chitosan-based microcapsules for dual active targeted treatment of lung infections. Int J Biol Macromol 2024; 265:131027. [PMID: 38518936 DOI: 10.1016/j.ijbiomac.2024.131027] [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: 12/05/2023] [Revised: 03/07/2024] [Accepted: 03/19/2024] [Indexed: 03/24/2024]
Abstract
Lung infections, such as: pneumonia, chronic obstructive cystic fibrosis, tuberculosis are generally caused by viruses, bacteria and fungi. As these infections are very difficult to treat, new therapeutic approaches are investigated in order to maximize the efficiency of the treatment and to reduce the major complications that can occur. The main objective of this study was focused on the preparation of drug-loaded peptides-functionalized microcapsules, obtained by a double emulsion, based on carboxylated chitosan (CMCS), poly(vinyl alcohol) (PVA) and an activator [4-(4,6-dimethoxy-1,3,5-triazin-2-yl)-4-methylmorpholinium chloride] (DMT-MM), for the dual active targeting and treatment of pulmonary infections. The microcapsules were functionalized on the surface with both CGSPGWVRC and indolicidin (IN) peptides, as effective ligands for the active targeting of both alveolar capillary endothelial cells and bacterial cells. FTIR spectroscopy confirmed the formation of ester and amide bonds into the structure of prepared microcapsules. Microcapsules diameter varied between 893 and 965 nm. The swelling degree in PBS, at pH 7.4, ranged between 1760 %- 2100 %. All the analyzed samples showed hemolysis degrees lower than 2 %, which demonstrated their non-hemolytic character. Evaluation of the impact of microcapsules on WI-38 normal human lung cells and RAW 264.7 mouse macrophages revealed a non-toxic or slightly cytotoxic effect. Internalization assay proved that microcapsules were localized at intracellular level.
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Affiliation(s)
- Delia Mihaela Rata
- "Apollonia" University of Iasi, Pacurari Street, No. 11, 700511, Iasi, Romania
| | | | - Leonard Ionut Atanase
- "Apollonia" University of Iasi, Pacurari Street, No. 11, 700511, Iasi, Romania; Academy of Romanian Scientists, Ilfov Street, No. 3, Sector 5, 050045 Bucharest, Romania
| | - Marcel Popa
- "Apollonia" University of Iasi, Pacurari Street, No. 11, 700511, Iasi, Romania; Academy of Romanian Scientists, Ilfov Street, No. 3, Sector 5, 050045 Bucharest, Romania
| | - Cosmin Teodor Mihai
- NIRDBS - Institute of Biological Research Iasi, Department of Experimental and Applied Biology, Lascar Catargi 47, Iasi 700107, Romania; Praxis Medical Investigations, Moara de Vant St. 35, 700376 Iasi, Romania
| | - Gabriela Vochita
- NIRDBS - Institute of Biological Research Iasi, Department of Experimental and Applied Biology, Lascar Catargi 47, Iasi 700107, Romania
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Kuperkar K, Atanase LI, Bahadur A, Crivei IC, Bahadur P. Degradable Polymeric Bio(nano)materials and Their Biomedical Applications: A Comprehensive Overview and Recent Updates. Polymers (Basel) 2024; 16:206. [PMID: 38257005 PMCID: PMC10818796 DOI: 10.3390/polym16020206] [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: 12/06/2023] [Revised: 01/03/2024] [Accepted: 01/05/2024] [Indexed: 01/24/2024] Open
Abstract
Degradable polymers (both biomacromolecules and several synthetic polymers) for biomedical applications have been promising very much in the recent past due to their low cost, biocompatibility, flexibility, and minimal side effects. Here, we present an overview with updated information on natural and synthetic degradable polymers where a brief account on different polysaccharides, proteins, and synthetic polymers viz. polyesters/polyamino acids/polyanhydrides/polyphosphazenes/polyurethanes relevant to biomedical applications has been provided. The various approaches for the transformation of these polymers by physical/chemical means viz. cross-linking, as polyblends, nanocomposites/hybrid composites, interpenetrating complexes, interpolymer/polyion complexes, functionalization, polymer conjugates, and block and graft copolymers, are described. The degradation mechanism, drug loading profiles, and toxicological aspects of polymeric nanoparticles formed are also defined. Biomedical applications of these degradable polymer-based biomaterials in and as wound dressing/healing, biosensors, drug delivery systems, tissue engineering, and regenerative medicine, etc., are highlighted. In addition, the use of such nano systems to solve current drug delivery problems is briefly reviewed.
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Affiliation(s)
- Ketan Kuperkar
- Department of Chemistry, Sardar Vallabhbhai National Institute of Technology (SVNIT), Ichchhanath, Piplod, Surat 395007, Gujarat, India;
| | - Leonard Ionut Atanase
- Faculty of Medical Dentistry, “Apollonia” University of Iasi, 700511 Iasi, Romania
- Academy of Romanian Scientists, 050045 Bucharest, Romania
| | - Anita Bahadur
- Department of Zoology, Sir PT Sarvajanik College of Science, Surat 395001, Gujarat, India;
| | - Ioana Cristina Crivei
- Department of Public Health, Faculty of Veterinary Medicine, “Ion Ionescu de la Brad” University of Life Sciences, 700449 Iasi, Romania;
| | - Pratap Bahadur
- Department of Chemistry, Veer Narmad South Gujarat University (VNSGU), Udhana-Magdalla Road, Surat 395007, Gujarat, India;
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Rata DM, Cadinoiu AN, Daraba OM, Gradinaru LM, Atanase LI, Ichim DL. Influence of ZnO Nanoparticles on the Properties of Ibuprofen-Loaded Alginate-Based Biocomposite Hydrogels with Potential Antimicrobial and Anti-Inflammatory Effects. Pharmaceutics 2023; 15:2240. [PMID: 37765209 PMCID: PMC10534553 DOI: 10.3390/pharmaceutics15092240] [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: 06/30/2023] [Revised: 08/18/2023] [Accepted: 08/22/2023] [Indexed: 09/29/2023] Open
Abstract
Hydrogels are a favorable alternative to accelerate the burn wound healing process and skin regeneration owing to their capability of absorbing contaminated exudates. The bacterial infections that occur in burn wounds might be treated using different topically applied materials, but bacterial resistance to antibiotics has become a major problem worldwide. Therefore, the use of non-antibiotic treatments represents a major interest in current research. In this study, new antibiocomposite hydrogels with anti-inflammatory and antimicrobial properties based on hyaluronic acid (HA) and sodium alginate (AG) were obtained using 4-(4,6-dimethoxy-1,3,5-triazinyl-2)-4-methylmorpholinium chloride as an activator. The combination of Ibuprofen, a non-steroidal anti-inflammatory drug commonly used to reduce inflammation, fever and pain in the body, with zinc oxide nanoparticles (ZnO NPs) was used in this study aimed at creating a complex hydrogel with anti-inflammatory and antimicrobial action and capable of improving the healing process of wounds caused by burns. FTIR spectra confirmed the cross-linking of AG with HA as well as the successful incorporation of ZnO NPs. Using electronic microscopy, it was noticed that the morphology of hydrogels is influenced by the incorporation of ZnO nanoparticles. Moreover, the incorporation of ZnO nanoparticles into hydrogels also has an influence on the swelling behavior at both pH 7.4 and 5.4. In fact, the swelling rate is lower when the amounts of the activator, HA and ZnO NPs are high. A drug release rate of almost 100% was observed for hydrogels without ZnO NPs, whereas the addition of nanoparticles to hydrogels led to a decrease in the release rate to 68% during 24 h. Cellular viability tests demonstrated the non-cytotoxic behavior of the hydrogels without the ZnO NPs, whereas a weak to moderate cytotoxic effect was noticed for hydrogels with ZnO NPs. The hydrogels containing 4% and 5% ZnO NPs, respectively, showed good antimicrobial activity against the S. aureus strain. These preliminary data prove that these types of hydrogels can be of interest as biomaterials for the treatment of burn wounds.
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Affiliation(s)
- Delia Mihaela Rata
- Faculty of Medical Dentistry, “Apollonia” University of Iasi, Pacurari Street, No. 11, 700511 Iasi, Romania; (D.M.R.); (L.I.A.); (D.L.I.)
| | - Anca Niculina Cadinoiu
- Faculty of Medical Dentistry, “Apollonia” University of Iasi, Pacurari Street, No. 11, 700511 Iasi, Romania; (D.M.R.); (L.I.A.); (D.L.I.)
| | - Oana Maria Daraba
- Faculty of Medical Dentistry, “Apollonia” University of Iasi, Pacurari Street, No. 11, 700511 Iasi, Romania; (D.M.R.); (L.I.A.); (D.L.I.)
| | - Luiza Madalina Gradinaru
- “Petru Poni” Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania;
| | - Leonard Ionut Atanase
- Faculty of Medical Dentistry, “Apollonia” University of Iasi, Pacurari Street, No. 11, 700511 Iasi, Romania; (D.M.R.); (L.I.A.); (D.L.I.)
- Academy of Romanian Scientists, 050045 Bucharest, Romania
| | - Daniela Luminita Ichim
- Faculty of Medical Dentistry, “Apollonia” University of Iasi, Pacurari Street, No. 11, 700511 Iasi, Romania; (D.M.R.); (L.I.A.); (D.L.I.)
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Tincu (Iurciuc) CE, Bouhadiba B, Atanase LI, Stan CS, Popa M, Ochiuz L. An Accessible Method to Improve the Stability and Reusability of Porcine Pancreatic α-Amylase via Immobilization in Gellan-Based Hydrogel Particles Obtained by Ionic Cross-Linking with Mg 2+ Ions. Molecules 2023; 28:4695. [PMID: 37375250 PMCID: PMC10302431 DOI: 10.3390/molecules28124695] [Citation(s) in RCA: 3] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 06/06/2023] [Accepted: 06/07/2023] [Indexed: 06/29/2023] Open
Abstract
Amylase is an enzyme used to hydrolyze starch in order to obtain different products that are mainly used in the food industry. The results reported in this article refer to the immobilization of α-amylase in gellan hydrogel particles ionically cross-linked with Mg2+ ions. The obtained hydrogel particles were characterized physicochemically and morphologically. Their enzymatic activity was tested using starch as a substrate in several hydrolytic cycles. The results showed that the properties of the particles are influenced by the degree of cross-linking and the amount of immobilized α-amylase enzyme. The temperature and pH at which the immobilized enzyme activity is maximum were T = 60 °C and pH = 5.6. The enzymatic activity and affinity of the enzyme to the substrate depend on the particle type, and this decreases for particles with a higher cross-linking degree owing to the slow diffusion of the enzyme molecules inside the polymer's network. By immobilization, α-amylase is protected from environmental factors, and the obtained particles can be quickly recovered from the hydrolysis medium, thus being able to be reused in repeated hydrolytic cycles (at least 11 cycles) without a substantial decrease in enzymatic activity. Moreover, α-amylase immobilized in gellan particles can be reactivated via treatment with a more acidic medium.
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Affiliation(s)
- Camelia Elena Tincu (Iurciuc)
- Department of Natural and Synthetic Polymers, “Cristofor Simionescu” Faculty of Chemical Engineering and Protection of the Environment, “Gheorghe Asachi” Technical University, 73, Prof. Dr. Docent Dimitrie Mangeron Street, 700050 Iași, Romania; (C.E.T.)
- Department of Pharmaceutical Technology, Faculty of Pharmacy, “Grigore T. Popa” University of Medicine and Pharmacy, 16, University Street, 700115 Iaşi, Romania
| | - Brahim Bouhadiba
- Laboratory of Engineering of Industrial Safety and Sustainable Development LISIDD, Institute of Maintenance and Industrial Safety, University of Oran 2, Mohammed Benahmed, Oran 31000, Algeria
| | - Leonard Ionut Atanase
- Faculty of Dental Medicine, “Apollonia” University of Iasi, 11, Pacurari Street, 700511 Iași, Romania
- Academy of Romanian Scientists, 050045 Bucharest, Romania
| | - Corneliu Sergiu Stan
- Department of Natural and Synthetic Polymers, “Cristofor Simionescu” Faculty of Chemical Engineering and Protection of the Environment, “Gheorghe Asachi” Technical University, 73, Prof. Dr. Docent Dimitrie Mangeron Street, 700050 Iași, Romania; (C.E.T.)
| | - Marcel Popa
- Department of Natural and Synthetic Polymers, “Cristofor Simionescu” Faculty of Chemical Engineering and Protection of the Environment, “Gheorghe Asachi” Technical University, 73, Prof. Dr. Docent Dimitrie Mangeron Street, 700050 Iași, Romania; (C.E.T.)
- Academy of Romanian Scientists, 050045 Bucharest, Romania
| | - Lăcrămioara Ochiuz
- Department of Pharmaceutical Technology, Faculty of Pharmacy, “Grigore T. Popa” University of Medicine and Pharmacy, 16, University Street, 700115 Iaşi, Romania
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Mihaela Raţă D, Niculina Cadinoiu A, Ionut Atanase L, Calin Mihalache G, Popa M. Design and characterization of dexamethasone phosphate -loaded microcapsules obtained by a double-emulsion method. Int J Pharm 2023; 639:122971. [PMID: 37105242 DOI: 10.1016/j.ijpharm.2023.122971] [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: 01/12/2023] [Revised: 04/12/2023] [Accepted: 04/15/2023] [Indexed: 04/29/2023]
Abstract
Polymeric microcapsules are extensively investigated as drug delivery systems for a broad range of applications. In the present study, Dexamethasone-loaded carboxylated chitosan (CCS)/poly (vinyl alcohol) (PVA)-based microcapsules were prepared in view of their potential administration by inhalation for the treatment of lung diseases. The crosslinking between PVA and CCS was activated by [4-(4,6-dimethoxy-1,3,5-triazin-2-yl)-4-methylmorpholinium chloride] (DMT-MM) and the FTIR results proved the formation of ester bonds between the two polymers. The sizes of the obtained microcapsules are influenced by the ratio between the polymers but also by the concentration of the DMT-MM activator. Moreover, the amount of PVA in the system has an important influence on swelling degree, encapsulation efficiency, drug release degree, biodegradation and protein adsorption. The sample with the highest amount of PVA has the highest crosslinking density and thus the lowest swelling degree and encapsulation efficiency. However, an encapsulation degree of 61.3% was obtained for the sample MCP-6 with the lowest PVA content. The same sample showed the lowest BSA adsorption. A controlled and sustained Dexamethasone release of around 90% was observed in PBS at pH 7.4 and 37°C during 24 h. All the obtained samples were hemocompatibles and thus can be used as efficient drug delivery systems.
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Affiliation(s)
- Delia Mihaela Raţă
- "Apollonia" University of Iasi, Pacurari Street, No. 11, 700511, Iasi, Romania
| | | | - Leonard Ionut Atanase
- "Apollonia" University of Iasi, Pacurari Street, No. 11, 700511, Iasi, Romania; Academy of Romanian Scientists, Ilfov Street, No. 3, Sector 5, 050045, Bucharest, Romania
| | | | - Marcel Popa
- "Apollonia" University of Iasi, Pacurari Street, No. 11, 700511, Iasi, Romania; Academy of Romanian Scientists, Ilfov Street, No. 3, Sector 5, 050045, Bucharest, Romania
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Babutan I, Todor-Boer O, Atanase LI, Vulpoi A, Botiz I. Self-Assembly of Block Copolymers in Thin Films Swollen-Rich in Solvent Vapors. Polymers (Basel) 2023; 15:polym15081900. [PMID: 37112047 PMCID: PMC10145245 DOI: 10.3390/polym15081900] [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: 03/24/2023] [Revised: 04/05/2023] [Accepted: 04/12/2023] [Indexed: 04/29/2023] Open
Abstract
In this study we have employed a polymer processing method based on solvent vapor annealing in order to condense relatively large amounts of solvent vapors onto thin films of block copolymers and thus to promote their self-assembly into ordered nanostructures. As revealed by the atomic force microscopy, a periodic lamellar morphology of poly(2-vinylpyridine)-b-polybutadiene and an ordered morphology comprised of hexagonally-packed structures made of poly(2-vinylpyridine)-b-poly(cyclohexyl methacrylate) were both successfully generated on solid substrates for the first time.
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Affiliation(s)
- Iulia Babutan
- Interdisciplinary Research Institute on Bio-Nano-Sciences, Babeș-Bolyai University, 400271 Cluj-Napoca, Romania
- Faculty of Physics, Babeș-Bolyai University, 400084 Cluj-Napoca, Romania
| | - Otto Todor-Boer
- INCDO-INOE 2000, Research Institute for Analytical Instrumentation, 400293 Cluj-Napoca, Romania
| | - Leonard Ionut Atanase
- Department of Biomaterials, Faculty of Medical Dentistry, "Apollonia" University of Iasi, 700511 Iasi, Romania
- Academy of Romanian Scientists, 050045 Bucharest, Romania
| | - Adriana Vulpoi
- Interdisciplinary Research Institute on Bio-Nano-Sciences, Babeș-Bolyai University, 400271 Cluj-Napoca, Romania
| | - Ioan Botiz
- Interdisciplinary Research Institute on Bio-Nano-Sciences, Babeș-Bolyai University, 400271 Cluj-Napoca, Romania
- Faculty of Physics, Babeș-Bolyai University, 400084 Cluj-Napoca, Romania
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Ragoubi M, Lecoublet M, Khennache M, Atanase LI, Poilane C, Leblanc N. How Retting Could Affect the Mechanical Behavior of Flax/Epoxy Biocomposite Materials? Materials (Basel) 2023; 16:2929. [PMID: 37049223 PMCID: PMC10095947 DOI: 10.3390/ma16072929] [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] [Figures] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 03/28/2023] [Accepted: 04/05/2023] [Indexed: 06/19/2023]
Abstract
This study focuses on the retting effect on the mechanical properties of flax biobased materials. For the technical fiber, a direct link was established between the biochemical alteration of technical flax and their mechanical properties. In function of the retting level, technical fibers appeared smoother and more individualized; nevertheless, a decrease in the ultimate modulus and maximum stress was recorded. A biochemical alteration was observed as the retting increased (a decrease in the soluble fraction from 10.4 ± 0.2 to 4.5 ± 1.2% and an increase in the holocellulose fractions). Regarding the mechanical behavior of biocomposites manufactured by thermocompression, a non-elastic behavior was observed for the tested samples. Young moduli (E1 and E2) gradually increased with retting. The retting effect was more pronounced when a normalization was performed (according to the fiber volume and porosity). A 40% increase in elastic modulus could be observed between under-retting (-) and over-retting (+). Moreover, the porosity content (Vp) increased overall with fiber content. Setup 3, with optimized processing parameters, was the most desirable processing protocol because it allowed the highest fiber fraction (Vf) for the lowest Vp.
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Affiliation(s)
- Mohamed Ragoubi
- UniLaSalle, Unité de Recherche Transformation et Agro-Ressources, VAM2IN (ULR 7519 UniLaSalle—Université d’Artois), 76130 Mont-Saint-Aignan, France
| | - Morgan Lecoublet
- UniLaSalle, Unité de Recherche Transformation et Agro-Ressources, VAM2IN (ULR 7519 UniLaSalle—Université d’Artois), 76130 Mont-Saint-Aignan, France
| | - Mehdi Khennache
- UniLaSalle, Unité de Recherche Transformation et Agro-Ressources, VAM2IN (ULR 7519 UniLaSalle—Université d’Artois), 76130 Mont-Saint-Aignan, France
| | - Leonard Ionut Atanase
- Faculty of Medical Dentistry, Apollonia University of Iasi, 700511 Iasi, Romania
- Academy of Romanian Scientists, 050045 Bucharest, Romania
| | - Christophe Poilane
- Normandie Université, Université de Caen Normandie (UNICAEN), 14000 Caen, France
| | - Nathalie Leblanc
- UniLaSalle, Unité de Recherche Transformation et Agro-Ressources, VAM2IN (ULR 7519 UniLaSalle—Université d’Artois), 76130 Mont-Saint-Aignan, France
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Babutan I, Todor-Boer O, Atanase LI, Vulpoi A, Simon S, Botiz I. Self-assembly of block copolymers on surfaces exposed to space-confined solvent vapor annealing. POLYMER 2023. [DOI: 10.1016/j.polymer.2023.125881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
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Ponjavic M, Malagurski I, Lazic J, Jeremic S, Pavlovic V, Prlainovic N, Maksimovic V, Cosovic V, Atanase LI, Freitas F, Matos M, Nikodinovic-Runic J. Advancing PHBV Biomedical Potential with the Incorporation of Bacterial Biopigment Prodigiosin. Int J Mol Sci 2023; 24:ijms24031906. [PMID: 36768226 PMCID: PMC9915418 DOI: 10.3390/ijms24031906] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 01/15/2023] [Accepted: 01/16/2023] [Indexed: 01/20/2023] Open
Abstract
The quest for sustainable biomaterials with excellent biocompatibility and tailorable properties has put polyhydroxyalkanoates (PHAs) into the research spotlight. However, high production costs and the lack of bioactivity limit their market penetration. To address this, poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) was combined with a bacterial pigment with strong anticancer activity, prodigiosin (PG), to obtain functionally enhanced PHBV-based biomaterials. The samples were produced in the form of films 115.6-118.8 µm in thickness using the solvent casting method. The effects of PG incorporation on the physical properties (morphology, biopolymer crystallinity and thermal stability) and functionality of the obtained biomaterials were investigated. PG has acted as a nucleating agent, in turn affecting the degree of crystallinity, thermal stability and morphology of the films. All samples with PG had a more organized internal structure and higher melting and degradation temperatures. The calculated degree of crystallinity of the PHBV copolymer was 53%, while the PG1, PG3 and PG3 films had values of 64.0%, 63.9% and 69.2%, respectively. Cytotoxicity studies have shown the excellent anticancer activity of films against HCT116 (colon cancer) cells, thus advancing PHBV biomedical application potential.
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Affiliation(s)
- Marijana Ponjavic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, 11042 Belgrade, Serbia
| | - Ivana Malagurski
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, 11042 Belgrade, Serbia
- Correspondence: (I.M.); (J.N.-R.); Tel.: +381-11-397-6034 (J.N.-R.)
| | - Jelena Lazic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, 11042 Belgrade, Serbia
| | - Sanja Jeremic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, 11042 Belgrade, Serbia
| | - Vladimir Pavlovic
- Faculty of Agriculture, University of Belgrade, Nemanjina 6, 11080 Belgrade, Serbia
| | - Nevena Prlainovic
- Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11000 Belgrade, Serbia
| | - Vesna Maksimovic
- Vinca Institute of Nuclear Sciences, University of Belgrade, National Institute of the Republic of Serbia, Mike Petrovića Alasa 12-14, 11000 Belgrade, Serbia
| | - Vladan Cosovic
- Institute of Chemistry, Technology and Metallurgy, University of Belgrade, Njegoseva 12, 11000 Belgrade, Serbia
| | - Leonard Ionut Atanase
- Faculty of Dental Medicine, “Apollonia” University of Iasi, 700511 Iasi, Romania
- Academy of Romanian Scientists, 050045 Bucharest, Romania
| | - Filomena Freitas
- i4HB—Institute for Health and Bioeconomy, School of Science and Technology, NOVA University Lisbon, 2819-516 Caparica, Portugal
- UCIBIO—Applied Molecular Biosciences Unit, Department of Chemistry, School of Science and Technology, NOVA University Lisbon, 2819-516 Caparica, Portugal
| | - Mariana Matos
- i4HB—Institute for Health and Bioeconomy, School of Science and Technology, NOVA University Lisbon, 2819-516 Caparica, Portugal
- UCIBIO—Applied Molecular Biosciences Unit, Department of Chemistry, School of Science and Technology, NOVA University Lisbon, 2819-516 Caparica, Portugal
| | - Jasmina Nikodinovic-Runic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, 11042 Belgrade, Serbia
- Correspondence: (I.M.); (J.N.-R.); Tel.: +381-11-397-6034 (J.N.-R.)
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Hlavatovičová E, Fernandez-Alvarez R, Byś K, Kereïche S, Mandal TK, Atanase LI, Štěpánek M, Uchman M. Stimuli-Responsive Triblock Terpolymer Conversion into Multi-Stimuli-Responsive Micelles with Dynamic Covalent Bonds for Drug Delivery through a Quick and Controllable Post-Polymerization Reaction. Pharmaceutics 2023; 15:pharmaceutics15010288. [PMID: 36678912 PMCID: PMC9867120 DOI: 10.3390/pharmaceutics15010288] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 01/06/2023] [Accepted: 01/09/2023] [Indexed: 01/19/2023] Open
Abstract
Stimuli-responsive copolymers are of great interest for targeted drug delivery. This study reports on a controllable post-polymerization quaternization with 2-bromomethyl-4-fluorophenylboronic acid of the poly(4-vinyl pyridine) (P4VP) block of a common poly(styrene)-b-poly(4-vinyl pyridine)-b-poly(ethylene oxide) (SVE) triblock terpolymer in order to achieve a selective responsivity to various diols. For this purpose, a reproducible method was established for P4VP block quaternization at a defined ratio, confirming the reaction yield by 11B, 1H NMR. Then, a reproducible self-assembly protocol is designed for preparing stable micelles from functionalized stimuli-responsive triblock terpolymers, which are characterized by light scattering and by cryogenic transmission electron microscopy. In addition, UV-Vis spectroscopy is used to monitor the boron-ester bonding and hydrolysis with alizarin as a model drug and to study encapsulation and release of this drug, induced by sensing with three geminal diols: fructose, galactose and ascorbic acid. The obtained results show that only the latter, with the vicinal diol group on sp2-hybridized carbons, was efficient for alizarin release. Therefore, the post-polymerization method for triblock terpolymer functionalization presented in this study allows for preparation of specific stimuli-responsive systems with a high potential for targeted drug delivery, especially for cancer treatment.
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Affiliation(s)
- Eva Hlavatovičová
- Department of Physical and Macromolecular Chemistry, Charles University, Hlavova 2030, 12843 Prague 2, Czech Republic
| | - Roberto Fernandez-Alvarez
- Department of Physical and Macromolecular Chemistry, Charles University, Hlavova 2030, 12843 Prague 2, Czech Republic
| | - Katarzyna Byś
- Department of Physical and Macromolecular Chemistry, Charles University, Hlavova 2030, 12843 Prague 2, Czech Republic
| | - Sami Kereïche
- Department of Physical and Macromolecular Chemistry, Charles University, Hlavova 2030, 12843 Prague 2, Czech Republic
- Institute of Biology and Medical Genetics, First Faculty of Medicine, Charles University and General University Hospital in Prague, Albertov 4, 12801 Prague, Czech Republic
| | - Tarun K. Mandal
- School of Chemical Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
| | - Leonard Ionut Atanase
- Faculty of Medical Dentistry, “Apollonia” University of Iasi, 700511 Iasi, Romania
- Academy of Romanian Scientists, 050045 Bucharest, Romania
- Correspondence: (L.I.A.); (M.Š.); (M.U.)
| | - Miroslav Štěpánek
- Department of Physical and Macromolecular Chemistry, Charles University, Hlavova 2030, 12843 Prague 2, Czech Republic
- Correspondence: (L.I.A.); (M.Š.); (M.U.)
| | - Mariusz Uchman
- Department of Physical and Macromolecular Chemistry, Charles University, Hlavova 2030, 12843 Prague 2, Czech Republic
- Correspondence: (L.I.A.); (M.Š.); (M.U.)
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11
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Tazibt N, Kaci M, Dehouche N, Ragoubi M, Atanase LI. Effect of Filler Content on the Morphology and Physical Properties of Poly(Lactic Acid)-Hydroxyapatite Composites. Materials (Basel) 2023; 16:ma16020809. [PMID: 36676546 PMCID: PMC9862906 DOI: 10.3390/ma16020809] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 01/03/2023] [Accepted: 01/11/2023] [Indexed: 05/22/2023]
Abstract
The effect of hydroxyapatite (HAp) synthesized by the chemical precipitation process on the morphology and properties of composites based on poly(lactic acid) (PLA) was investigated at various filler content ratios, i.e., 5, 10 and 15 wt%. Both neat PLA and PLA-based composites were first prepared using the solvent casting method, followed by melt compounding in an internal mixer, whereas tensile specimens were obtained by thermo-compression. The study revealed that the addition of 5 wt% of HAp into the PLA led to a slight improvement in both the thermal stability and tensile properties of the composite material in comparison with neat PLA and other composite samples. Indeed, the values of the tensile strength and modulus increased from approximately 61 MPa and 2.9 GPa for the neat PLA to almost 64 MPa and 3.057 GPa for the composite sample, respectively. Moreover, the degradation temperature at a 5 wt% mass loss also increased by almost 5 °C compared to other samples, due probably to a finer dispersion of the HAp particles in the PLA, as observed under a scanning electron microscope. Furthermore, the FT-IR spectra displayed some changes in the chemical structure of the PLA/HAp (5 wt%), indicating the occurrence of filler-matrix interactions. At a higher filler content ratio, a decrease in the properties of the PLA/HAp composites was observed, being more pronounced at 15 wt%. The PLA composite containing 5 wt% HAp presents the best compromise among the investigated properties. The study highlighted the possibility of using HAp without any prior surface treatment as a reinforcement in PLA composite materials.
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Affiliation(s)
- Nedjma Tazibt
- Laboratoire des Matériaux Polymères Avancés, Faculté de Technologie, Université de Bejaia, Bejaia 06000, Algeria
- Correspondence: (N.T.); (M.K.)
| | - Mustapha Kaci
- Laboratoire des Matériaux Polymères Avancés, Faculté de Technologie, Université de Bejaia, Bejaia 06000, Algeria
- Correspondence: (N.T.); (M.K.)
| | - Nadjet Dehouche
- Laboratoire des Matériaux Polymères Avancés, Faculté de Technologie, Université de Bejaia, Bejaia 06000, Algeria
| | - Mohamed Ragoubi
- UnilaSalle, Unité de Recherche Transformation et Agro-Ressources, VAMIN (EA 7519 UniLaSalle—Université d’Artois), F-76130 Mont-Saint-Aignan, France
| | - Leonard Ionut Atanase
- Faculty of Medical Dentistry, “Apollonia” University of Iasi, 700511 Iasi, Romania
- Academy of Romanian Scientists, 050045 Bucharest, Romania
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12
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Dzhuzha AY, Tarasenko II, Atanase LI, Lavrentieva A, Korzhikova-Vlakh EG. Amphiphilic Polypeptides Obtained by the Post-Polymerization Modification of Poly(Glutamic Acid) and Their Evaluation as Delivery Systems for Hydrophobic Drugs. Int J Mol Sci 2023; 24:ijms24021049. [PMID: 36674566 PMCID: PMC9864831 DOI: 10.3390/ijms24021049] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 12/12/2022] [Accepted: 01/03/2023] [Indexed: 01/06/2023] Open
Abstract
Synthetic poly(amino acids) are a unique class of macromolecules imitating natural polypeptides and are widely considered as carriers for drug and gene delivery. In this work, we synthesized, characterized and studied the properties of amphiphilic copolymers obtained by the post-polymerization modification of poly(α,L-glutamic acid) with various hydrophobic and basic L-amino acids and D-glucosamine. The resulting glycopolypeptides were capable of forming nanoparticles that exhibited reduced macrophage uptake and were non-toxic to human lung epithelial cells (BEAS-2B). Moreover, the developed nanoparticles were suitable for loading hydrophobic cargo. In particular, paclitaxel nanoformulations had a size of 170-330 nm and demonstrated a high cytostatic efficacy against human lung adenocarcinoma (A549). In general, the obtained nanoparticles were comparable in terms of their characteristics and properties to those based on amphiphilic (glyco)polypeptides obtained by copolymerization methods.
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Affiliation(s)
- Apollinariia Yu. Dzhuzha
- Institute of Chemistry, Saint-Petersburg State University, 198504 St. Petersburg, Russia
- Institute of Macromolecular Compounds, Russian Academy of Sciences, 199004 St. Petersburg, Russia
| | - Irina I. Tarasenko
- Institute of Macromolecular Compounds, Russian Academy of Sciences, 199004 St. Petersburg, Russia
| | | | - Antonina Lavrentieva
- Institute of Technical Chemistry, Gottfried-Wilhelm-Leibniz University, 30167 Hannover, Germany
| | - Evgenia G. Korzhikova-Vlakh
- Institute of Macromolecular Compounds, Russian Academy of Sciences, 199004 St. Petersburg, Russia
- Correspondence:
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13
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Kuperkar K, Patel D, Atanase LI, Bahadur P. Amphiphilic Block Copolymers: Their Structures, and Self-Assembly to Polymeric Micelles and Polymersomes as Drug Delivery Vehicles. Polymers (Basel) 2022; 14:4702. [PMID: 36365696 PMCID: PMC9657626 DOI: 10.3390/polym14214702] [Citation(s) in RCA: 39] [Impact Index Per Article: 19.5] [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: 10/06/2022] [Revised: 10/24/2022] [Accepted: 10/28/2022] [Indexed: 07/26/2023] Open
Abstract
Self-assembly of amphiphilic block copolymers display a multiplicity of nanoscale periodic patterns proposed as a dominant tool for the 'bottom-up' fabrication of nanomaterials with different levels of ordering. The present review article focuses on the recent updates to the self-association of amphiphilic block copolymers in aqueous media into varied core-shell morphologies. We briefly describe the block copolymers, their types, microdomain formation in bulk and micellization in selective solvents. We also discuss the characteristic features of block copolymers nanoaggregates viz., polymer micelles (PMs) and polymersomes. Amphiphilic block copolymers (with a variety of hydrophobic blocks and hydrophilic blocks; often polyethylene oxide) self-assemble in water to micelles/niosomes similar to conventional nonionic surfactants with high drug loading capacity. Double hydrophilic block copolymers (DHBCs) made of neutral block-neutral block or neutral block-charged block can transform one block to become hydrophobic under the influence of a stimulus (physical/chemical/biological), and thus induced amphiphilicity and display self-assembly are discussed. Different kinds of polymer micelles (viz. shell and core-cross-linked, core-shell-corona, schizophrenic, crew cut, Janus) are presented in detail. Updates on polymerization-induced self-assembly (PISA) and crystallization-driven self-assembly (CDSA) are also provided. Polyion complexes (PICs) and polyion complex micelles (PICMs) are discussed. Applications of these block copolymeric micelles and polymersomes as nanocarriers in drug delivery systems are described.
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Affiliation(s)
- Ketan Kuperkar
- Department of Chemistry, Sardar Vallabhbhai National Institute of Technology (SVNIT), Ichchhanath, Surat 395 007, Gujarat, India
| | - Dhruvi Patel
- Department of Chemistry, Sardar Vallabhbhai National Institute of Technology (SVNIT), Ichchhanath, Surat 395 007, Gujarat, India
| | - Leonard Ionut Atanase
- Faculty of Medical Dentistry, “Apollonia” University of Iasi, 700511 Iasi, Romania
- Academy of Romanian Scientists, 050045 Bucharest, Romania
| | - Pratap Bahadur
- Department of Chemistry, Veer Narmad South Gujarat University (VNSGU), Surat 395 007, Gujarat, India
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Atanase LI, Salhi S, Cucoveica O, Ponjavic M, Nikodinovic-Runic J, Delaite C. Biodegradability Assessment of Polyester Copolymers Based on Poly(ethylene adipate) and Poly(ε-caprolactone). Polymers (Basel) 2022; 14:polym14183736. [PMID: 36145879 PMCID: PMC9504934 DOI: 10.3390/polym14183736] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 08/30/2022] [Accepted: 09/02/2022] [Indexed: 12/19/2022] Open
Abstract
Biodegradable polymers contain chains that are hydrolytically or enzymatically cleaved, resulting in soluble degradation products. Biodegradability is particularly desired in biomedical applications, in which degradation of the polymer ensures clearance from the body and eliminates the need for retrieval or explant. In this study, a homologues series of poly(ε-caprolactone)-b-poly(ethylene adipate)-b-poly(ε-caprolactone) (PCL-b-PEA-b-PCL) block copolymers, with constant PEA molar mass and different PCL sequence lengths was obtained. The starting point of these copolymers was a dihydroxy-PEA precursor with a molar mass (Mn) of 2500 g/mol. Mn values of the PCL varied between 1000 and 10,000 g/mol. Both the precursors and the copolymers were characterized using different physicochemical methods, such as: NMR, SEC, Maldi-TOFF, DSC, and ATG. The molecular characteristics of the copolymers were in a direct correlation with the sequence length of the PCL. Enzymatic degradability studies were also conducted by using cell-free extract containing Pseudomonas aeruginosa PAO1 for 10 and 21 days, and it appeared that the presence of the PEA central sequence has an important influence on the biodegradability of the copolymer samples. In fact, copolymer PCL7000-PEA2500-PCL7000 had a weight loss of around 50% after 10 days whereas the weight loss of the homopolymer PCL, with a similar Mn of 14,000 g/mol, was only 6%. The results obtained in this study indicate that these copolymer samples can be further used for the preparation of drug delivery systems with modulated biodegradability.
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Affiliation(s)
- Leonard Ionut Atanase
- Faculty of Medical Dentistry, Apollonia University of Iasi, 700511 Iasi, Romania
- Academy of Romanian Scientists, 050045 Bucharest, Romania
- Correspondence:
| | - Slim Salhi
- Laboratoire de Chimie Appliquée, Faculté des Sciences de Sfax, University of Sfax, Sfax 3029, Tunisia
| | - Oana Cucoveica
- Faculty of Medical Dentistry, Apollonia University of Iasi, 700511 Iasi, Romania
- “Cristofor Simionescu” Faculty of Chemical Engineering and Environmental Protection, “Gheorghe Asachi” Technical University of Iasi, 700050 Iasi, Romania
| | - Marijana Ponjavic
- Department of Electrochemistry, Institute of Chemistry, Technology and Metallurgy, University of Belgrade, 11000 Belgrade, Serbia
| | - Jasmina Nikodinovic-Runic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, 11000 Belgrade, Serbia
| | - Christelle Delaite
- Laboratoire de Photochimie et d’Ingenierie Macromoleculaires (LPIM), University of Haute Alsace, 68100 Mulhouse, France
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Ozturk MR(B, Popa M, Rata DM, Cadinoiu AN, Parfait F, Delaite C, Atanase LI, Solcan C, Daraba OM. Drug-Loaded Polymeric Micelles Based on Smart Biocompatible Graft Copolymers with Potential Applications for the Treatment of Glaucoma. Int J Mol Sci 2022; 23:ijms23169382. [PMID: 36012646 PMCID: PMC9409108 DOI: 10.3390/ijms23169382] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [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: 07/27/2022] [Revised: 08/16/2022] [Accepted: 08/17/2022] [Indexed: 01/09/2023] Open
Abstract
Glaucoma is the second leading cause of blindness in the world. Despite the fact that many treatments are currently available for eye diseases, the key issue that arises is the administration of drugs for long periods of time and the increased risk of inflammation, but also the high cost of eye surgery. Consequently, numerous daily administrations are required, which reduce patient compliance, and even in these conditions, the treatment of eye disease is too ineffective. Micellar polymers are core–shell nanoparticles formed by the self-assembly of block or graft copolymers in selective solvents. In the present study, polymeric micelles (PMs) were obtained by dialysis from smart biocompatible poly(ε-caprolactone)-poly(N-vinylcaprolactam-co-N-vinylpyrrolidone) [PCL-g-P(NVCL-co-NVP)] graft copolymers. Two copolymers with different molar masses were studied, and a good correlation was noted between the micellar sizes and the total degree of polymerisation (DPn) of the copolymers. The micelles formed by Cop A [PCL120-g-P(NVCL507-co-NVP128)], with the lowest total DPn, have a Z-average value of 39 nm, whereas the micellar sizes for Cop B [PCL120-g-P(NVCL1253-co-NVP139)] are around 47 nm. These PMs were further used for the encapsulation of two drugs with applications for the treatment of eye diseases. After the encapsulation of Dorzolamide, a slight increase in micellar sizes was noted, whereas the encapsulation of Indomethacin led to a decrease in these sizes. Using dynamic light scattering, it was proved that both free and drug-loaded PMs are stable for 30 days of storage at 4 °C. Moreover, in vitro biological tests demonstrated that the obtained PMs are both haemo- and cytocompatible and thus can be used for further in vivo tests. The designed micellar system proved its ability to release the encapsulated drugs in vitro, and the results obtained were validated by in vivo tests carried out on experimental animals, which proved its high effectiveness in reducing intraocular pressure.
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Affiliation(s)
| | - Marcel Popa
- “Cristofor Simionescu” Faculty of Chemical Engineering and Environmental Protection, “Gheorghe Asachi” Technical University of Iasi, 700050 Iasi, Romania
- Academy of Romanian Scientists, 050045 Bucharest, Romania
- Correspondence: (M.P.); (L.I.A.)
| | - Delia Mihaela Rata
- Faculty of Medical Dentistry, “Apollonia” University of Iasi, 700511 Iasi, Romania
| | | | | | | | - Leonard Ionut Atanase
- Academy of Romanian Scientists, 050045 Bucharest, Romania
- Faculty of Medical Dentistry, “Apollonia” University of Iasi, 700511 Iasi, Romania
- Correspondence: (M.P.); (L.I.A.)
| | - Carmen Solcan
- Public Health Department, Faculty of Veterinary Medicine, “Ion Ionescu de la Brad” University of Life Sciences, 700490 Iasi, Romania
| | - Oana Maria Daraba
- Faculty of Medical Dentistry, “Apollonia” University of Iasi, 700511 Iasi, Romania
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16
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Dellali KZ, Dellali M, Raţă DM, Cadinoiu AN, Atanase LI, Popa M, Spataru MC, Solcan C. Assessment of Physicochemical and In Vivo Biological Properties of Polymeric Nanocapsules Based on Chitosan and Poly( N-vinyl pyrrolidone- alt-itaconic anhydride). Polymers (Basel) 2022; 14:polym14091811. [PMID: 35566980 PMCID: PMC9104533 DOI: 10.3390/polym14091811] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [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: 02/17/2022] [Revised: 04/13/2022] [Accepted: 04/19/2022] [Indexed: 02/07/2023] Open
Abstract
Drug delivery is an important field of nanomedicine, and its aim is to deliver specific active substances to a precise site of action in order to produce a desired pharmacological effect. In the present study nanocapsules were obtained by a process of interfacial condensation between chitosan (dissolved in the aqueous phase) and poly(N-vinyl pyrrolidone-alt-itaconic anhydride), a highly reactive copolymer capable of easily opening the anhydride ring under the action of amine groups of chitosan. The formed amide bonds led to the formation of a hydrogel membrane. The morphology of the obtained nanocapsules, their behavior in aqueous solution of physiological pH, and their ability to encapsulate and release a model drug can be modulated by the parameters of the synthesis process, such as the molar ratio between functional groups of polymers and the ratio of the phases in which the polymers are solubilized. Although a priori both polymers are biocompatible, this paper reports the results of a very detailed in vivo study conducted on experimental animals which have received the obtained nanocapsules by three administration routes—intraperitoneal, subcutaneous, and oral. The organs taken from the animals’ kidney, liver, spleen, and lung and analyzed histologically demonstrated the ability of nanocapsules to stimulate the monocytic macrophage system without producing inflammatory changes. Moreover, their in vivo behavior has been shown to depend not only on the route of administration but also on the interaction with the cells of the organs with which they come into contact. The results clearly argue the biocompatibility of nanocapsules and hence the possibility of their safe use in biomedical applications.
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Affiliation(s)
- Kheira Zanoune Dellali
- Faculty of Technology, University Hassiba Benbouali, BP 151, Chlef 02000, Algeria; (K.Z.D.); (M.D.)
| | - Mohammed Dellali
- Faculty of Technology, University Hassiba Benbouali, BP 151, Chlef 02000, Algeria; (K.Z.D.); (M.D.)
| | - Delia Mihaela Raţă
- Faculty of Medical Dentistry, Apollonia University of Iasi, Pacurari Street, No. 11, 700511 Iasi, Romania;
- Correspondence: (D.M.R.); (L.I.A.); (M.P.)
| | - Anca Niculina Cadinoiu
- Faculty of Medical Dentistry, Apollonia University of Iasi, Pacurari Street, No. 11, 700511 Iasi, Romania;
| | - Leonard Ionut Atanase
- Faculty of Medical Dentistry, Apollonia University of Iasi, Pacurari Street, No. 11, 700511 Iasi, Romania;
- Correspondence: (D.M.R.); (L.I.A.); (M.P.)
| | - Marcel Popa
- Faculty of Medical Dentistry, Apollonia University of Iasi, Pacurari Street, No. 11, 700511 Iasi, Romania;
- Academy of Romanian Scientists, Splaiul Independentei Street, No. 54, 050094 Bucharest, Romania
- Correspondence: (D.M.R.); (L.I.A.); (M.P.)
| | - Mihaela-Claudia Spataru
- Public Health Departament, Faculty of Veterinary Medicine, Ion Ionescu de la Brad University of Life Sciences, Mihail Sadoveanu Alley, No. 8, 700489 Iasi, Romania; (M.-C.S.); (C.S.)
| | - Carmen Solcan
- Public Health Departament, Faculty of Veterinary Medicine, Ion Ionescu de la Brad University of Life Sciences, Mihail Sadoveanu Alley, No. 8, 700489 Iasi, Romania; (M.-C.S.); (C.S.)
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17
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Nica SL, Zaltariov MF, Pamfil D, Bargan A, Rusu D, Raţă DM, Găină C, Atanase LI. MWCNTs Composites-Based on New Chemically Modified Polysulfone Matrix for Biomedical Applications. Nanomaterials 2022; 12:nano12091502. [PMID: 35564211 PMCID: PMC9101761 DOI: 10.3390/nano12091502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 04/21/2022] [Accepted: 04/21/2022] [Indexed: 01/27/2023]
Abstract
Polyvinyl alcohol (PVA) is a non-toxic biosynthetic polymer. Due to the hydrophilic properties of the PVA, its utilization is an easy tool to modify the properties of materials inducing increased hydrophilicity, which can be noticed in the surface properties of the materials, such as wettability. Based on this motivation, we proposed to obtain high-performance composite materials by a facile synthetic method that involves the cross-linking process of polyvinyl alcohol (PVA) with and aldehyde-functionalized polysulfone(mPSF) precursor, prior to incorporation of modified MWCNTs with hydrophilic groups, thus ensuring a high compatibility between the polymeric and the filler components. Materials prepared in this way have been compared with those based on polyvinyl alcohol and same fillers (mMWCNTs) in order to establish the influence of the polymeric matrix on the composites properties. The amount of mMWCNTs varied in both polymeric matrices between 0.5 and 5 wt%. Fourier transformed infrared with attenuated total reflectance spectroscopy (FTIR-ATR) was employed to confirm the changes noted in the PVA, mPSF and their composites. Hemolysis degree was investigated in correlation with the material structural features. Homogenous distribution of mMWCNTs in all the composite materials has been confirmed by scanning electron microscopy. The hydrophilicity of both composite systems, estimated by the contact angle method, was influenced by the presence of the filler amount mMWCNTs in both matrices (PVA and mPSF). Our work demonstrates that mPSF/mMWCNTs and PVA/mMWCNTs composite could be used as water purification or blood-filtration materials.
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Affiliation(s)
- Simona Luminita Nica
- Petru Poni Institute of Macromolecular Chemistry, 41A Grigore GhicaVoda Alley, 700487 Iasi, Romania; (M.-F.Z.); (D.P.); (A.B.); (D.R.); (C.G.)
- Correspondence: (S.L.N.); (L.I.A.)
| | - Mirela-Fernanda Zaltariov
- Petru Poni Institute of Macromolecular Chemistry, 41A Grigore GhicaVoda Alley, 700487 Iasi, Romania; (M.-F.Z.); (D.P.); (A.B.); (D.R.); (C.G.)
| | - Daniela Pamfil
- Petru Poni Institute of Macromolecular Chemistry, 41A Grigore GhicaVoda Alley, 700487 Iasi, Romania; (M.-F.Z.); (D.P.); (A.B.); (D.R.); (C.G.)
| | - Alexandra Bargan
- Petru Poni Institute of Macromolecular Chemistry, 41A Grigore GhicaVoda Alley, 700487 Iasi, Romania; (M.-F.Z.); (D.P.); (A.B.); (D.R.); (C.G.)
| | - Daniela Rusu
- Petru Poni Institute of Macromolecular Chemistry, 41A Grigore GhicaVoda Alley, 700487 Iasi, Romania; (M.-F.Z.); (D.P.); (A.B.); (D.R.); (C.G.)
| | - Delia Mihaela Raţă
- Faculty of Medical Dentistry, Apollonia University of Iasi, Pacurari Street, No. 11, 700511 Iasi, Romania;
| | - Constantin Găină
- Petru Poni Institute of Macromolecular Chemistry, 41A Grigore GhicaVoda Alley, 700487 Iasi, Romania; (M.-F.Z.); (D.P.); (A.B.); (D.R.); (C.G.)
| | - Leonard Ionut Atanase
- Faculty of Medical Dentistry, Apollonia University of Iasi, Pacurari Street, No. 11, 700511 Iasi, Romania;
- Correspondence: (S.L.N.); (L.I.A.)
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18
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Rata DM, Cadinoiu AN, Popa M, Atanase LI, Daraba OM, Popescu I, Romila LE, Ichim DL. Biocomposite Hydrogels for the Treatment of Bacterial Infections: Physicochemical Characterization and In Vitro Assessment. Pharmaceutics 2021; 13:pharmaceutics13122079. [PMID: 34959360 PMCID: PMC8706181 DOI: 10.3390/pharmaceutics13122079] [Citation(s) in RCA: 10] [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: 10/15/2021] [Revised: 11/29/2021] [Accepted: 12/02/2021] [Indexed: 12/15/2022] Open
Abstract
Hydrogels based on natural and synthetic polymers and inorganic nanoparticles proved to be a viable strategy in the fight against some Gram-positive and Gram-negative bacteria. Additionally, numerous studies have demonstrated the advantages of using ZnO nanoparticles in medicine due to their high antibacterial efficacy and relatively low cost. Consequently, the purpose of our study was to incorporate ZnO nanoparticles into chitosan/poly (vinyl alcohol)-based hydrogels in order to obtain a biocomposite with antimicrobial properties. These biocomposite hydrogels, prepared by a double crosslinking (covalent and ionic) were characterized from a structural, morphological, swelling degree, and mechanical point of view. FTIR spectroscopy demonstrated both the apparition of new imine and acetal bonds due to covalent crosslinking and the presence of the sulfate group following ionic crosslinking. The morphology, swelling degree, and mechanical properties of the obtained hydrogels were influenced by both the degree of covalent crosslinking and the amount of ZnO nanoparticles incorporated. In vitro cytotoxicity assessment showed that hydrogels without ZnONPs are non-cytotoxic while the biocomposite hydrogels are weak (with 3% ZnONPs) or moderately (with 4 and 5% ZnONPs) cytotoxic. Compared to nanoparticle-free hydrogels, the biocomposite hydrogels show significant antimicrobial activity against S. aureus, E. coli, and K. pneumonia.
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Affiliation(s)
- Delia Mihaela Rata
- Faculty of Medical Dentistry, Apollonia University of Iasi, 700511 Iasi, Romania; (D.M.R.); (M.P.); (L.I.A.); (O.M.D.); (L.E.R.); (D.L.I.)
| | - Anca Niculina Cadinoiu
- Faculty of Medical Dentistry, Apollonia University of Iasi, 700511 Iasi, Romania; (D.M.R.); (M.P.); (L.I.A.); (O.M.D.); (L.E.R.); (D.L.I.)
- Correspondence: or
| | - Marcel Popa
- Faculty of Medical Dentistry, Apollonia University of Iasi, 700511 Iasi, Romania; (D.M.R.); (M.P.); (L.I.A.); (O.M.D.); (L.E.R.); (D.L.I.)
| | - Leonard Ionut Atanase
- Faculty of Medical Dentistry, Apollonia University of Iasi, 700511 Iasi, Romania; (D.M.R.); (M.P.); (L.I.A.); (O.M.D.); (L.E.R.); (D.L.I.)
| | - Oana Maria Daraba
- Faculty of Medical Dentistry, Apollonia University of Iasi, 700511 Iasi, Romania; (D.M.R.); (M.P.); (L.I.A.); (O.M.D.); (L.E.R.); (D.L.I.)
| | - Irina Popescu
- Petru Poni Institute of Macromolecular Chemistry, Aleea Grigore Ghica Voda 41A, 700487 Iasi, Romania;
| | - Laura Ecaterina Romila
- Faculty of Medical Dentistry, Apollonia University of Iasi, 700511 Iasi, Romania; (D.M.R.); (M.P.); (L.I.A.); (O.M.D.); (L.E.R.); (D.L.I.)
| | - Daniela Luminita Ichim
- Faculty of Medical Dentistry, Apollonia University of Iasi, 700511 Iasi, Romania; (D.M.R.); (M.P.); (L.I.A.); (O.M.D.); (L.E.R.); (D.L.I.)
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Rabha B, Bharadwaj KK, Pati S, Choudhury BK, Sarkar T, Kari ZA, Edinur HA, Baishya D, Atanase LI. Development of Polymer-Based Nanoformulations for Glioblastoma Brain Cancer Therapy and Diagnosis: An Update. Polymers (Basel) 2021; 13:polym13234114. [PMID: 34883617 PMCID: PMC8659151 DOI: 10.3390/polym13234114] [Citation(s) in RCA: 5] [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: 10/31/2021] [Revised: 11/16/2021] [Accepted: 11/24/2021] [Indexed: 12/12/2022] Open
Abstract
Brain cancers, mainly high-grade gliomas/glioblastoma, are characterized by uncontrolled proliferation and recurrence with an extremely poor prognosis. Despite various conventional treatment strategies, viz., resection, chemotherapy, and radiotherapy, the outcomes are still inefficient against glioblastoma. The blood–brain barrier is one of the major issues that affect the effective delivery of drugs to the brain for glioblastoma therapy. Various studies have been undergone in order to find novel therapeutic strategies for effective glioblastoma treatment. The advent of nanodiagnostics, i.e., imaging combined with therapies termed as nanotheranostics, can improve the therapeutic efficacy by determining the extent of tumour distribution prior to surgery as well as the response to a treatment regimen after surgery. Polymer nanoparticles gain tremendous attention due to their versatile nature for modification that allows precise targeting, diagnosis, and drug delivery to the brain with minimal adverse side effects. This review addresses the advancements of polymer nanoparticles in drug delivery, diagnosis, and therapy against brain cancer. The mechanisms of drug delivery to the brain of these systems and their future directions are also briefly discussed.
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Affiliation(s)
- Bijuli Rabha
- Department of Bioengineering & Technology, GUIST, Gauhati University, Guwahati 781014, India; (B.R.); (K.K.B.)
| | - Kaushik Kumar Bharadwaj
- Department of Bioengineering & Technology, GUIST, Gauhati University, Guwahati 781014, India; (B.R.); (K.K.B.)
| | - Siddhartha Pati
- Skills Innovation & Academic Network (SIAN) Institute-Association for Biodiversity Conservation and Research (ABC), Balasore 756001, India;
- NatNov Bioscience Private Limited, Balasore, 756001, India
| | | | - Tanmay Sarkar
- Malda Polytechnic, West Bengal State Council of Technical Education, Govt. of West Bengal, Malda 732102, India;
- Department of Food Technology and Biochemical Engineering, Jadavpur University, Kolkata 700032, India
| | - Zulhisyam Abdul Kari
- Faculty of Agro Based Industry, Universiti Malaysia Kelantan, Jeli 17600, Malaysia;
| | - Hisham Atan Edinur
- School of Health Sciences, Health Campus, Universiti Sains Malaysia, Kubang Kerian 16150, Malaysia;
| | - Debabrat Baishya
- Department of Bioengineering & Technology, GUIST, Gauhati University, Guwahati 781014, India; (B.R.); (K.K.B.)
- Correspondence: (D.B.); (L.I.A.)
| | - Leonard Ionut Atanase
- Faculty of Medical Dentistry, “Apollonia” University of Iasi, 700511 Iasi, Romania
- Correspondence: (D.B.); (L.I.A.)
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Baranov N, Popa M, Atanase LI, Ichim DL. Polysaccharide-Based Drug Delivery Systems for the Treatment of Periodontitis. Molecules 2021; 26:2735. [PMID: 34066568 PMCID: PMC8125343 DOI: 10.3390/molecules26092735] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [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: 03/21/2021] [Revised: 04/21/2021] [Accepted: 05/05/2021] [Indexed: 02/04/2023] Open
Abstract
Periodontal diseases are worldwide health problems that negatively affect the lifestyle of many people. The long-term effect of the classical treatments, including the mechanical removal of bacterial plaque, is not effective enough, causing the scientific world to find other alternatives. Polymer-drug systems, which have different forms of presentation, chosen depending on the nature of the disease, the mode of administration, the type of polymer used, etc., have become very promising. Hydrogels, for example (in the form of films, micro-/nanoparticles, implants, inserts, etc.), contain the drug included, encapsulated, or adsorbed on the surface. Biologically active compounds can also be associated directly with the polymer chains by covalent or ionic binding (polymer-drug conjugates). Not just any polymer can be used as a support for drug combination due to the constraints imposed by the fact that the system works inside the body. Biopolymers, especially polysaccharides and their derivatives and to a lesser extent proteins, are preferred for this purpose. This paper aims to review in detail the biopolymer-drug systems that have emerged in the last decade as alternatives to the classical treatment of periodontal disease.
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Affiliation(s)
- Nicolae Baranov
- Faculty of Chemical Engineering and Protection of the Environment, “Gheorghe Asachi” Technical University, 700050 Iasi, Romania;
| | - Marcel Popa
- Faculty of Chemical Engineering and Protection of the Environment, “Gheorghe Asachi” Technical University, 700050 Iasi, Romania;
- Academy of Romanian Scientists, 50085 Bucharest, Romania
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Abstract
The broad diversity of structures and the presence of numerous functional groups available for chemical modifications represent an enormous advantage for the development of safe, non-toxic, and cost-effective micellar drug delivery systems (DDS) based on natural biopolymers, such as polysaccharides, proteins, and peptides. Different drug-loading methods are used for the preparation of these micellar systems, but it appeared that dialysis is generally recommended, as it avoids the formation of large micellar aggregates. Moreover, the preparation method has an important influence on micellar size, morphology, and drug loading efficiency. The small size allows the passive accumulation of these micellar systems via the permeability and retention effect. Natural biopolymer-based micellar DDS are high-value biomaterials characterized by good compatibility, biodegradability, long blood circulation time, non-toxicity, non-immunogenicity, and high drug loading, and they are biodegraded to non-toxic products that are easily assimilated by the human body. Even if some recent studies reported better antitumoral effects for the micellar DDS based on polysaccharides than for commercial formulations, their clinical use is not yet generalized. This review is focused on the studies from the last decade concerning the preparation as well as the colloidal and biological characterization of micellar DDS based on natural biopolymers.
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Affiliation(s)
- Leonard Ionut Atanase
- Department of Biomaterials, Faculty of Medical Dentistry, "Apollonia" University of Iasi, Pacurari Street, No. 11, 700511 Iasi, Romania
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Rata DM, Cadinoiu AN, Atanase LI, Popa M, Mihai CT, Solcan C, Ochiuz L, Vochita G. Topical formulations containing aptamer-functionalized nanocapsules loaded with 5-fluorouracil - An innovative concept for the skin cancer therapy. Mater Sci Eng C Mater Biol Appl 2020; 119:111591. [PMID: 33321636 DOI: 10.1016/j.msec.2020.111591] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 09/18/2020] [Accepted: 10/03/2020] [Indexed: 12/17/2022]
Abstract
New topical gel formulations based on sodium alginate and hyaluronic acid containing AS1411 aptamer-functionalized polymeric nanocapsules loaded with an antitumoral drug (5-Fluorouracil) were designed as an innovative approach for the skin cancer treatment. Several important analyses were used to characterize these obtained topical gel formulations, namely: rheological tests, permeation assays across Strat-M® artificial membrane, ex-vivo permeation assays across chicken skin membrane, haemolysis tests, skin irritation tests, in vitro cytotoxicity assay on human basal carcinoma cells and in vivo tests. Rheological tests revealed that apparent viscosity decreases with the increase of the shear rate, for analyzed samples, which demonstrates a shear thinning behavior. Low levels of hemolysis values which ranged between 0.03 and 0.55% suggested that the tested formulations did not induce red blood cell lysis.. The gel formulations containing nanocapsules loaded with 5-FU proved to be non-irritant. Furthermore, by study the ex-vivo diffusion properties across the chicken skin membrane, it was proved that nanoencapsulation enhance the permeability properties of 5-FU. In vitro cytotoxicity assay on TE 354.T (ATCC® CRL-7762™) human basal carcinoma cell line showed that the obtained formulations loaded with 5-Fluorouracil manifest an important cytotoxic effect. Finally, the presence of Langerhans CD68 cells-positive in the epidermis and epithelial sheath of dermal hair follicles suggests a specific activation, migration and retrieval of nanoparticles by these cells. Following the results obtained in this study we can appreciate that the obtained topical gel formulations have a favourable biosafety and good antitumor effects which makes them attractive for skin cancer treatment.
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Affiliation(s)
- Delia Mihaela Rata
- "Apollonia" University of Iasi, Faculty of Medical Dentistry, Pacurari Street, No. 11, Iasi 700511, Romania
| | - Anca Niculina Cadinoiu
- "Apollonia" University of Iasi, Faculty of Medical Dentistry, Pacurari Street, No. 11, Iasi 700511, Romania.
| | - Leonard Ionut Atanase
- "Apollonia" University of Iasi, Faculty of Medical Dentistry, Pacurari Street, No. 11, Iasi 700511, Romania
| | - Marcel Popa
- "Apollonia" University of Iasi, Faculty of Medical Dentistry, Pacurari Street, No. 11, Iasi 700511, Romania; Academy of Romanian Scientists, Splaiul Independentei Street, No 54, 050094 Bucharest, Romania.
| | - Cosmin-Teodor Mihai
- Institute of Biological Research Iasi, branch of NIRDBS, Lascar Catargi Str. 47, 700107, Iasi, Romania; "Gr.T.Popa" Medicine and Pharmacy University of Iasi, Advanced Center for Research and Development in Experimental Medicine (CEMEX), 9-13. M. Kogalniceanu, Iasi, Romania
| | - Carmen Solcan
- "Ion Ionescu de la Brad" University of Agricultural Sciences and Veterinary Medicine, Iasi, Romania
| | - Lacramioara Ochiuz
- Faculty of Pharmacy, "Grigore T. Popa" University of Medicine and Pharmacy Iasi, 16 Universităţii Street, 700115, Iasi, Romania
| | - Gabriela Vochita
- Institute of Biological Research Iasi, branch of NIRDBS, Lascar Catargi Str. 47, 700107, Iasi, Romania
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Iurciuc-Tincu CE, Cretan MS, Purcar V, Popa M, Daraba OM, Atanase LI, Ochiuz L. Drug Delivery System Based on pH-Sensitive Biocompatible Poly(2-vinyl pyridine)-b-poly(ethylene oxide) Nanomicelles Loaded with Curcumin and 5-Fluorouracil. Polymers (Basel) 2020; 12:polym12071450. [PMID: 32605272 PMCID: PMC7408444 DOI: 10.3390/polym12071450] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [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: 05/04/2020] [Revised: 06/23/2020] [Accepted: 06/23/2020] [Indexed: 12/15/2022] Open
Abstract
Smart polymeric micelles (PMs) are of practical interest as nanocarriers for the encapsulation and controlled release of hydrophobic drugs. Two hydrophobic drugs, naturally-based curcumin (Cur) and synthetic 5-fluorouracil (5-FU), were loaded into the PMs formed by a well-defined pH-sensitive poly(2-vinyl pyridine)-b-poly(ethylene oxide) (P2VP90-b-PEO398) block copolymer. The influence of the drug loading on the micellar sizes was investigated by dynamic light scattering (DLS) and it appears that the size of the PMs increases from around 60 to 100 nm when Cur is loaded. On the contrary, the loading of the 5-FU has a smaller effect on the micellar sizes. This difference can be attributed to higher molar mass of Cur with respect to 5-FU but also to higher loading efficiency of Cur, 6.4%, compared to that of 5-FU, 5.8%. In vitro drug release was studied at pH 2, 6.8, and 7.4, and it was observed that the pH controls the release of both drugs. At pH 2, where the P2VP sequences from the “frozen-in” micellar core are protonated, the drug release efficiencies exceed 90%. Moreover, it was demonstrated, by in vitro assays, that these PMs are hemocompatible and biocompatible. Furthermore, the PMs protect the Cur against the photo-degradation, whereas the non-ionic PEO corona limits the adsorption of bovine serum albumin (BSA) protein on the surface. This study demonstrates that these pH-sensitive PMs are suitable for practical utilization as human-safe and smart, injectable drug delivery systems.
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Affiliation(s)
- Camelia-Elena Iurciuc-Tincu
- Department of Pharmaceutical Technology, Faculty of Pharmacy, “Grigore T. Popa” University of Medicine and Pharmacy, University street, no. 16, 700115 Iaşi, Romania; (C.-E.I.-T.); (M.S.C.); (L.O.)
- Department of Natural and Synthetic Polymers, Faculty of Chemical Engineering and Protection of the Environment, “Gheorghe Asachi” Technical University, 700050 Iaşi, Romania;
| | - Monica Stamate Cretan
- Department of Pharmaceutical Technology, Faculty of Pharmacy, “Grigore T. Popa” University of Medicine and Pharmacy, University street, no. 16, 700115 Iaşi, Romania; (C.-E.I.-T.); (M.S.C.); (L.O.)
| | - Violeta Purcar
- National R&D Institute for Chemistry and Petrochemistry—ICECHIM, Splaiul Independentei 202, 6th district, 060021 Bucharest, Romania;
| | - Marcel Popa
- Department of Natural and Synthetic Polymers, Faculty of Chemical Engineering and Protection of the Environment, “Gheorghe Asachi” Technical University, 700050 Iaşi, Romania;
- Academy of Romanian Scientists, Splaiul Independentei Street No. 54, 050085 Bucharest, Romania
| | - Oana Maria Daraba
- Faculty of Dental Medicine, “Apollonia” University of Iasi, Pacurari street, no. 11, 700355 Iași, Romania;
| | - Leonard Ionut Atanase
- Faculty of Dental Medicine, “Apollonia” University of Iasi, Pacurari street, no. 11, 700355 Iași, Romania;
- Correspondence: or
| | - Lacramioara Ochiuz
- Department of Pharmaceutical Technology, Faculty of Pharmacy, “Grigore T. Popa” University of Medicine and Pharmacy, University street, no. 16, 700115 Iaşi, Romania; (C.-E.I.-T.); (M.S.C.); (L.O.)
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Daraba OM, Cadinoiu AN, Rata DM, Atanase LI, Vochita G. Antitumoral Drug-Loaded Biocompatible Polymeric Nanoparticles Obtained by Non-Aqueous Emulsion Polymerization. Polymers (Basel) 2020; 12:E1018. [PMID: 32365767 PMCID: PMC7284542 DOI: 10.3390/polym12051018] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 04/19/2020] [Accepted: 04/22/2020] [Indexed: 12/15/2022] Open
Abstract
Non-aqueous dispersions (NAD) with two types of polymeric nanoparticles (NPs), such as hydrophobic poly(ε-caprolactone) (PCL) and hydrophilic cross-linked poly(vinylpyrrolidone) (PNVP), were synthesized in the present study starting from monomer-in-silicone oil (PDMS) polymerizable non-aqueous emulsions stabilized with the same tailor-made PDMS-based block copolymer. These NPs were loaded with CCisplatin, an antitumoral model drug, directly from the emulsion polymerization step, and it was observed that the presence of the drug leads only to a slight increase of the NPs size, from 120 to 150 nm. The drug release kinetics was evaluated at 37 °C in phosphate buffer at pH = 7.4 and it appeared that the drug release rate from the hydrophilic cross-linked PNVP-based NPs is higher than that from the hydrophobic PCL-based NPs. Moreover, haemolysis tests revealed the fact that these two types of NPs have a good compatibility with the blood. Furthermore, for both the free and drug-loaded NPs, the in vitro cytotoxicity and apoptosis was studied on two types of cancer cell lines, such as MCF-7 (breast cancer cell line) and A-375 (skin cancer cell line). Both types of NPs had no cytotoxic effect but, at a concentration of 500 μg/mL, presented an apoptotic effect similar to that of the free drug.
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Affiliation(s)
- Oana Maria Daraba
- Department of Biomaterials, Faculty of Medical Dentistry, "Apollonia" University of Iasi, Pacurari Street, No. 11, Iasi 700511, Romania
| | - Anca Niculina Cadinoiu
- Department of Biomaterials, Faculty of Medical Dentistry, "Apollonia" University of Iasi, Pacurari Street, No. 11, Iasi 700511, Romania
| | - Delia Mihaela Rata
- Department of Biomaterials, Faculty of Medical Dentistry, "Apollonia" University of Iasi, Pacurari Street, No. 11, Iasi 700511, Romania
| | - Leonard Ionut Atanase
- Department of Biomaterials, Faculty of Medical Dentistry, "Apollonia" University of Iasi, Pacurari Street, No. 11, Iasi 700511, Romania
| | - Gabriela Vochita
- Department of Experimental and Applied Biology, NIRDBS-Institute of Biological Research Iasi, Lascar Catargi 47, Iasi 700107, Romania
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Rață DM, Cadinoiu AN, Atanase LI, Bacaita SE, Mihalache C, Daraba OM, Gherghel D, Popa M. "In vitro" behaviour of aptamer-functionalized polymeric nanocapsules loaded with 5-fluorouracil for targeted therapy. Mater Sci Eng C Mater Biol Appl 2019; 103:109828. [PMID: 31349496 DOI: 10.1016/j.msec.2019.109828] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 05/27/2019] [Accepted: 05/29/2019] [Indexed: 11/27/2022]
Abstract
New type of nanocapsules based on carboxymethyl chitosan functionalized with AS1411 aptamer and poly(N-vinylpyrrolidone-alt-itaconic anhydride) loaded with 5-Fluorouracil (5-FU) were developed, with the potential to improve the treatment of cancer. Functionalization of nanocapsules with AS1411 aptamer will enhance their recognition by tumor cells, due to the interaction with nucleolin, and subsequent endocytosis. Nanocapsules were prepared by interfacial condensation method in the absence of any toxic crosslinking agents. The condensation reaction took place at the interface between the organic and aqueous phases by opening the anhydride cycles from the copolymer, under the action of the NH2 groups from mixture of chitosan/aptamer-functionalized carboxymethyl chitosan. The nanocapsules diameter varied between 100 and 267 nm as a function of the molar ratio of the polymers. SEM images have revealed that nanocapsules were spherical and presented relatively low dimensional polydispersity. Nanocapsules swelling degree was found between 1000 and 1680% in PBS solution (pH = 7.4) and they allowed the encapsulation of an important amount of 5-Fluorouracil (5-FU). The release efficiency of 5-FU was studied, the processes being controlled by the drug diffusion through the polymeric membrane, as confirmed by the theoretical analysis of the drug release. The cytotoxicity and haemolysis tests performed on the nanocapsules proved their lack of toxicity and their excellent hemocompatibility. The obtained results were encouraging, showing that these original 5-FU-loaded nanocapsules were able to induce a more pronounced cytotoxic effect on neoplastic MCF-7 cells, the occurrence of dead cells being more rapidly than in the case of free 5-FU.
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Affiliation(s)
- Delia Mihaela Rață
- "Apollonia" University of Iasi, Faculty of Medical Dentistry, Muzicii Street, No. 2, Iasi 700511, Romania
| | - Anca Niculina Cadinoiu
- "Apollonia" University of Iasi, Faculty of Medical Dentistry, Muzicii Street, No. 2, Iasi 700511, Romania.
| | - Leonard Ionut Atanase
- "Apollonia" University of Iasi, Faculty of Medical Dentistry, Muzicii Street, No. 2, Iasi 700511, Romania
| | - Simona Elena Bacaita
- Gheorghe Asachi Technical University of Iasi, Faculty of Machine Manufacturing and Industrial Management, D. Mangeron Bld. no. 73, 700050 Iasi, Romania
| | - Cristian Mihalache
- "Apollonia" University of Iasi, Faculty of Medical Dentistry, Muzicii Street, No. 2, Iasi 700511, Romania; NIRDBS - Institute of Biological Research Iasi, Department of Experimental and Applied Biology, Lascar Catargi 47, Iasi 700107, Romania
| | - Oana-Maria Daraba
- "Apollonia" University of Iasi, Faculty of Medical Dentistry, Muzicii Street, No. 2, Iasi 700511, Romania
| | - Daniela Gherghel
- NIRDBS - Institute of Biological Research Iasi, Department of Experimental and Applied Biology, Lascar Catargi 47, Iasi 700107, Romania
| | - Marcel Popa
- "Apollonia" University of Iasi, Faculty of Medical Dentistry, Muzicii Street, No. 2, Iasi 700511, Romania; Academy of Romanian Scientists, Splaiul Independentei Street, No 54, 050094 Bucharest, Romania
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Iurciuc (Tincu) CE, Savin A, Atanase LI, Danu M, Martin P, Popa M. Encapsulation of Saccharomyces cerevisiae in hydrogel particles based gellan ionically cross-linked with zinc acetate. POWDER TECHNOL 2018. [DOI: 10.1016/j.powtec.2017.11.017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Atanase LI, Riess G. Self-Assembly of Block and Graft Copolymers in Organic Solvents: An Overview of Recent Advances. Polymers (Basel) 2018; 10:E62. [PMID: 30966101 PMCID: PMC6414829 DOI: 10.3390/polym10010062] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [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: 11/20/2017] [Revised: 01/04/2018] [Accepted: 01/06/2018] [Indexed: 12/31/2022] Open
Abstract
This review is an attempt to update the recent advances in the self-assembly of amphiphilic block and graft copolymers. Their micellization behavior is highlighted for linear AB, ABC triblock terpolymers, and graft structures in non-aqueous selective polar and non-polar solvents, including solvent mixtures and ionic liquids. The micellar characteristics, such as particle size, aggregation number, and morphology, are examined as a function of the copolymers' architecture and molecular characteristics.
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Affiliation(s)
- Leonard Ionut Atanase
- Faculty of Dental Medicine, "Apollonia" University, 700399 Iasi, Romania.
- Research Institute "Academician Ioan Haulica", 700399 Iasi, Romania.
| | - Gerard Riess
- University of Haute Alsace, Ecole Nationale Supérieure de Chimie de Mulhouse, Laboratoire de Photochimie et d'Ingénierie Macromoléculaires, 68093 Mulhouse CEDEX, France.
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Iurciuc (Tincu) CE, Savin A, Atanase LI, Martin P, Popa M. Physico-chemical characteristics and fermentative activity of the hydrogel particles based on polysaccharides mixture with yeast cells immobilized, obtained by ionotropic gelation. Food and Bioproducts Processing 2017. [DOI: 10.1016/j.fbp.2017.05.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Atanase LI, Lerch JP, Caprarescu S, Iurciuc Tincu CE, Riess G. Micellization of pH-sensitive poly(butadiene)-block
-poly(2 vinylpyridine)-block
-poly(ethylene oxide) triblock copolymers: Complex formation with anionic surfactants. J Appl Polym Sci 2017. [DOI: 10.1002/app.45313] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Leonard Ionut Atanase
- Faculty of Dental Medicine; “Apollonia” University; 700399 Iasi Romania
- Research Institute “Academician Ioan Haulica”; 700399 Iasi Romania
| | | | - Simona Caprarescu
- Faculty of Applied Chemistry and Materials Science; Inorganic Chemistry, Physical Chemistry and Electrochemistry Department, Politehnica University of Bucharest; P.O. 011061 Bucharest Romania
| | - Camelia Elena Iurciuc Tincu
- Faculty of Chemical Engineering and Protection of the Environment; Department of Natural and Synthetic Polymers, “Gheorghe Asachi” Technical University; 700050 Iasi Romania
| | - Gerard Riess
- LPIM, University of Haute Alsace; 68100 Mulhouse Cedex France
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Atanase LI, Bistac S, Riess G. Effect of poly(vinyl alcohol-co-vinyl acetate) copolymer blockiness on the dynamic interfacial tension and dilational viscoelasticity of polymer-anionic surfactant complex at the water-1-chlorobutane interface. Soft Matter 2015; 11:2665-2672. [PMID: 25691435 DOI: 10.1039/c4sm02766c] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Poly(vinyl alcohol-co-vinyl acetate) (PVA) copolymers obtained by partial hydrolysis of poly(vinyl acetate) (PVAc) are of practical importance for many applications, including emulsion and suspension polymerization processes. Their molecular characteristics have a major influence on the colloidal and interfacial properties. The most significant characteristics are represented by the average degree of hydrolysis D̅H̅, average degree of polymerization D̅P̅w̅ but also by the average acetate sequence length n(VAc)(0) which designates the so-called blockiness. Colloidal aggregates were observed in the aqueous PVA solutions having a D̅H̅ value of 73 mol%. The volume fraction of these aggregates at a given D̅H̅ value is directly correlated to the blockiness. Three PVA samples with identical D̅H̅ and D̅P̅w̅ but different blockiness were examined. By pendant drop and oscillating pendant drop techniques it was shown that the PVA sample having the lowest blockiness and thus the lowest volume fraction of colloidal aggregates has lower interfacial tension and elastic modulus E' values. On the contrary, the corresponding values are highest for PVA sample of higher blockiness. In the presence of sodium dodecyl sulfate (SDS), the colloidal aggregates are disaggregated by complex formation due to the hydrophobic-hydrophobic interactions. The PVA-SDS complex acts as a partial polyelectrolyte that induces the stretching of the chains and thus a reduction of the interface thickness. In this case, the interfacial tension and the elastic modulus both increase with increasing SDS concentration for all three PVA samples and the most significant effect was noticed for the most "blocky" copolymer sample.
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Affiliation(s)
- Leonard Ionut Atanase
- Laboratoire de Photochimie et d'Ingénierie Macromoléculaires, Ecole Nationale Supérieure de Chimie de Mulhouse, University of Haute Alsace, 3 rue Alfred Werner, 68093, Mulhouse Cedex, France.
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Atanase LI, Winninger J, Delaite C, Riess G. Micellization and demicellization of amphiphilic poly(vinyl acetate)-graft-poly(N-vinyl-pyrrolidone) graft copolymers in the presence of sodium dodecyl sulfate. Colloids Surf A Physicochem Eng Asp 2014. [DOI: 10.1016/j.colsurfa.2014.08.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Affiliation(s)
- Leonard Ionut Atanase
- University of Haute Alsace; Ecole Nationale Supérieure de Chimie de Mulhouse, Laboratoire de Photochimie et d'Ingénierie Macromoléculaires; 3 rue Alfred Werner 68093 Mulhouse Cedex France
| | - Gérard Riess
- University of Haute Alsace; Ecole Nationale Supérieure de Chimie de Mulhouse, Laboratoire de Photochimie et d'Ingénierie Macromoléculaires; 3 rue Alfred Werner 68093 Mulhouse Cedex France
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Atanase LI, Riess G. Stabilization of non-aqueous emulsions by poly(2-vinylpyridine)-b-poly(butadiene) block copolymers. Colloids Surf A Physicochem Eng Asp 2014. [DOI: 10.1016/j.colsurfa.2014.01.026] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Atanase LI, Riess G. Block copolymer stabilized nonaqueous biocompatible sub-micron emulsions for topical applications. Int J Pharm 2013; 448:339-45. [PMID: 23566926 DOI: 10.1016/j.ijpharm.2013.03.051] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2013] [Revised: 03/23/2013] [Accepted: 03/28/2013] [Indexed: 10/27/2022]
Abstract
Polyethylene glycol (PEG) 400/Miglyol 812 non-aqueous sub-micron emulsions were developed due to the fact that they are of interest for the design of drug-loaded biocompatible topical formulations. These types of emulsions were favourably stabilized by poly (2-vinylpyridine)-b-poly (butadiene) (P2VP-b-PBut) copolymer with DPBut>DP2VP, each of these sequences being well-adapted to the solubility parameters of PEG 400 and Miglyol 812, respectively. This type of block copolymers, which might limit the Ostwald ripening, appeared to be more efficient stabilizers than low molecular weight non-ionic surfactants. The emulsion characteristics, such as particle size, stability and viscosity at different shear rates were determined as a function of the phase ratio, the copolymer concentration and storage time. It was further shown that Acyclovir, as a model drug of low water solubility, could be incorporated into the PEG 400 dispersed phase, with no significant modification of the initial emulsion characteristics.
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Affiliation(s)
- Leonard Ionut Atanase
- University of Haute Alsace, Ecole Nationale Supérieure de Chimie de Mulhouse, Laboratoire de Photochimie et d'Ingénierie Macromoléculaires, 3 rue Alfred Werner, 68093 Mulhouse Cedex, France
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