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Putri AP, Bose RK, Chalid M, Picchioni F. Rheological and Self-Healing Behavior of Hydrogels Synthesized from l-Lysine-Functionalized Alginate Dialdehyde. Polymers (Basel) 2023; 15:polym15041010. [PMID: 36850295 PMCID: PMC9959054 DOI: 10.3390/polym15041010] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 02/01/2023] [Accepted: 02/02/2023] [Indexed: 02/22/2023] Open
Abstract
Alginate dialdehyde and l-lysine-functionalized alginate dialdehyde were prepared to provide active aldehyde and l-lysine sites along the alginate backbone, respectively. Different concentrations of substrates and the reduction agent were added, and their influence on the degree of l-lysine substitution was evaluated. An amination reduction reaction (with l-lysine) was conducted on alginate dialdehyde with a 31% degree of oxidation. The NMR confirmed the presence of l-lysine functionality with the degree of substitution of 20%. The structural change of the polymer was observed via FTIR spectroscopy, confirming the formation of Schiff base covalent linkage after the crosslinking. The additional l-lysine sites on functionalized alginate dialdehyde provide more crosslinking sites on the hydrogel, which leads to a higher modulus storage rate than in the original alginate dialdehyde. This results in dynamic covalent bonds, which are attributed to the alginate derivative-gelatin hydrogels with shear-thinning and self-healing properties. The results suggested that the concentration and stoichiometric ratio of alginate dialdehyde, l-lysine-functionalized alginate dialdehyde, and gelatin play a fundamental role in the hydrogel's mechanical properties.
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Affiliation(s)
- Arlina Prima Putri
- Department of Chemical Engineering—Product Technology, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
- Metallurgical and Material Engineering Department, Universitas Indonesia, Depok 16424, Indonesia
| | - Ranjita K. Bose
- Department of Chemical Engineering—Product Technology, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Mochamad Chalid
- Metallurgical and Material Engineering Department, Universitas Indonesia, Depok 16424, Indonesia
| | - Francesco Picchioni
- Department of Chemical Engineering—Product Technology, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
- Correspondence:
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pH-responsive in situ gelling properties of thiolated citrus high-methoxyl pectin and its potential gel mechanism. Food Res Int 2023; 163:112220. [PMID: 36596149 DOI: 10.1016/j.foodres.2022.112220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 11/15/2022] [Accepted: 11/20/2022] [Indexed: 11/25/2022]
Abstract
pH-responsive in situ gelling properties of thiolated citrus high-methoxyl pectin (TCHMP) were investigated in this study. The gelation capacity results revealed that the in situ gelation behavior of TCHMP only occurred when the pH value was higher than 6.25. The gel strength increased from 26.63 g to 42.77 g as the pH value increased from 7.4 to 8.9. Rheological measurements confirmed that the apparent viscosity and viscoelasticity of TCHMP were highly dependent on pH value and dialysis time. Compared with the control group, the apparent viscosity of TCHMP dialyzed in phosphate-buffered saline (PBS) of pH 8.9 for 180 min increased 695-fold. During the dialysis process of TCHMP at different pH values (7.4-8.9), the final thiol groups content decreased and the final disulfide bonds content increased with the increase in pH value. This illustrates that the mechanism of in situ gelation is mainly the oxidation of thiol-thiol groups to form disulfide bonds. These results can put forward new insights into the pH-responsive in situ gelling properties of TCHMP and provide a theoretical basis for the application of TCHMP in neutral and alkaline gel systems.
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Xu Y, Fourniols T, Labrak Y, Préat V, Beloqui A, des Rieux A. Surface Modification of Lipid-Based Nanoparticles. ACS NANO 2022; 16:7168-7196. [PMID: 35446546 DOI: 10.1021/acsnano.2c02347] [Citation(s) in RCA: 48] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
There is a growing interest in the development of lipid-based nanocarriers for multiple purposes, including the recent increase of these nanocarriers as vaccine components during the COVID-19 pandemic. The number of studies that involve the surface modification of nanocarriers to improve their performance (increase the delivery of a therapeutic to its target site with less off-site accumulation) is enormous. The present review aims to provide an overview of various methods associated with lipid nanoparticle grafting, including techniques used to separate grafted nanoparticles from unbound ligands or to characterize grafted nanoparticles. We also provide a critical perspective on the usefulness and true impact of these modifications on overcoming different biological barriers, with our prediction on what to expect in the near future in this field.
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Affiliation(s)
- Yining Xu
- Advanced Drug Delivery and Biomaterials, UCLouvain, Université Catholique de Louvain, Louvain Drug Research Institute, Avenue Mounier, 73 B1.73.12, 1200 Brussels, Belgium
| | - Thibaut Fourniols
- Advanced Drug Delivery and Biomaterials, UCLouvain, Université Catholique de Louvain, Louvain Drug Research Institute, Avenue Mounier, 73 B1.73.12, 1200 Brussels, Belgium
| | - Yasmine Labrak
- Advanced Drug Delivery and Biomaterials, UCLouvain, Université Catholique de Louvain, Louvain Drug Research Institute, Avenue Mounier, 73 B1.73.12, 1200 Brussels, Belgium
- Bioanalysis and Pharmacology of Bioactive Lipids, UCLouvain, Université Catholique de Louvain, Louvain Drug Research Institute, Avenue Mounier, 72 B1.72.01, 1200 Brussels, Belgium
| | - Véronique Préat
- Advanced Drug Delivery and Biomaterials, UCLouvain, Université Catholique de Louvain, Louvain Drug Research Institute, Avenue Mounier, 73 B1.73.12, 1200 Brussels, Belgium
| | - Ana Beloqui
- Advanced Drug Delivery and Biomaterials, UCLouvain, Université Catholique de Louvain, Louvain Drug Research Institute, Avenue Mounier, 73 B1.73.12, 1200 Brussels, Belgium
| | - Anne des Rieux
- Advanced Drug Delivery and Biomaterials, UCLouvain, Université Catholique de Louvain, Louvain Drug Research Institute, Avenue Mounier, 73 B1.73.12, 1200 Brussels, Belgium
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Mohan T, Kleinschek KS, Kargl R. Polysaccharide peptide conjugates: Chemistry, properties and applications. Carbohydr Polym 2022; 280:118875. [PMID: 35027118 DOI: 10.1016/j.carbpol.2021.118875] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Revised: 10/25/2021] [Accepted: 11/05/2021] [Indexed: 11/02/2022]
Abstract
The intention of this publication is to give an overview on research related to conjugates of polysaccharides and peptides. Dextran, chitosan, and alginate were selected, to cover four of the most often encountered functional groups known to be present in polysaccharides. These groups are the hydroxyl, the amine, the carboxyl, and the acetal functionality. A collection of the commonly used chemical reactions for conjugation is provided. Conjugation results into distinct properties compared to the parent polysaccharide, and a number of these characteristics are highlighted. This review aims at demonstrating the applicability of said conjugates with a strong emphasis on biomedical applications, drug delivery, biosensing, and tissue engineering. Some suggestions are made for more rigorous chemistries and analytics that could be investigated. Finally, an outlook is given into which direction the field could be developed further. We hope that this survey provides the reader with a comprehensive summary and contributes to the progress of works that aim at synthetically combining two of the main building blocks of life into supramolecular structures with unprecedented biological response.
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Affiliation(s)
- Tamilselvan Mohan
- Institute for Chemistry and Technology of Biobased Systems (IBIOSYS), Graz University of Technology, Stremayrgasse 9, 8010 Graz, Austria
| | - Karin Stana Kleinschek
- Institute for Chemistry and Technology of Biobased Systems (IBIOSYS), Graz University of Technology, Stremayrgasse 9, 8010 Graz, Austria
| | - Rupert Kargl
- Institute for Chemistry and Technology of Biobased Systems (IBIOSYS), Graz University of Technology, Stremayrgasse 9, 8010 Graz, Austria; Institute for Automation, Faculty of Electrical Engineering and Computer Science, University of Maribor, Smetanova ulica 17, 2000 Maribor, Slovenia.
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Li S, Liang N, Yan P, Kawashima Y, Sun S. Inclusion complex based on N-acetyl-L-cysteine and arginine modified hydroxypropyl-β-cyclodextrin for oral insulin delivery. Carbohydr Polym 2021; 252:117202. [DOI: 10.1016/j.carbpol.2020.117202] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2020] [Revised: 09/17/2020] [Accepted: 10/05/2020] [Indexed: 02/08/2023]
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Pornpitchanarong C, Rojanarata T, Opanasopit P, Ngawhirunpat T, Patrojanasophon P. Preactivated-thiolated polyacrylic acid/1-vinyl pyrrolidone nanoparticles as nicotine carriers for smoking cessation. RSC Adv 2020; 10:33517-33525. [PMID: 35515031 PMCID: PMC9056685 DOI: 10.1039/d0ra06039a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Accepted: 09/04/2020] [Indexed: 11/23/2022] Open
Abstract
This study aimed to develop nicotine-loaded mucoadhesive preactivated-thiolated polymeric nanoparticles (PNPs) for smoking cessation. 2-Mercaptonicotinic acid (2MNA) was coupled as dithionicotinic acid dimer and used in the preactivation of thiolated polyacrylic acid/vinyl pyrrolidone PNPs (thiolated AA/VP PNPs). Preactivated-thiolated AA/VP PNPs were synthesized through surfactant-free emulsion polymerization and coupling reactions. The structural attributes of the preactivated-thiolated AA/VP PNPs were characterized using Fourier-transform infrared spectroscopy and proton nuclear magnetic resonance spectroscopy. The particle size and zeta potential were evaluated by dynamic light scattering evaluation. The morphology of the preactivated-thiolated AA/VP PNPs was examined using scanning electron microscopy. In addition, the mucoadhesive properties, drug loading and release, and biocompatibility of the preactivated-thiolated AA/VP PNPs were assessed. The spherical preactivated-thiolated AA/VP PNPs were successfully synthesized with a particle size of 410.3 ± 7.4 nm and a negative surface charge. The preactivated-thiolated AA/VP PNPs exhibited superior mucoadhesive properties compared with the thiolated AA/VP PNPs. Drug loading by PNP to a nicotine ratio of 1 : 1 provided desirable loading capacity and % loading efficiency of 285.7 ± 36.7 μg mg−1 and 57.1 ± 7.4%, respectively. More than 50% of the nicotine contained in the PNPs was rapidly released in the first hour, followed by a sustained release for up to 12 h. Moreover, the synthesized PNPs were non-toxic to human gingival cells. Therefore, the preactivated-thiolated AA/VP PNPs may be a candidate carrier of nicotine for smoking cessation. Preactivated-thiolated AA/VP NPs improved mucoadhesive property and prolonged nicotine release to 12 h.![]()
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Affiliation(s)
- Chaiyakarn Pornpitchanarong
- Pharmaceutical Development of Green Innovations Group (PDGIG), Faculty of Pharmacy, Silpakorn University Nakhon Pathom 73000 Thailand
| | - Theerasak Rojanarata
- Pharmaceutical Development of Green Innovations Group (PDGIG), Faculty of Pharmacy, Silpakorn University Nakhon Pathom 73000 Thailand
| | - Praneet Opanasopit
- Pharmaceutical Development of Green Innovations Group (PDGIG), Faculty of Pharmacy, Silpakorn University Nakhon Pathom 73000 Thailand
| | - Tanasait Ngawhirunpat
- Pharmaceutical Development of Green Innovations Group (PDGIG), Faculty of Pharmacy, Silpakorn University Nakhon Pathom 73000 Thailand
| | - Prasopchai Patrojanasophon
- Pharmaceutical Development of Green Innovations Group (PDGIG), Faculty of Pharmacy, Silpakorn University Nakhon Pathom 73000 Thailand
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8
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Prüfert F, Hering U, Zaichik S, Le NMN, Bernkop-Schnürch A. Synthesis and in vitro characterization of a preactivated thiolated acrylic acid/acrylamide-methylpropane sulfonic acid copolymer as a mucoadhesive sprayable polymer. Int J Pharm 2020; 583:119371. [PMID: 32339632 DOI: 10.1016/j.ijpharm.2020.119371] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 04/20/2020] [Accepted: 04/22/2020] [Indexed: 10/24/2022]
Abstract
AIM Development of a preactivated thiomer as sprayable excipient for mucoadhesive formulations. METHODS CG4500 (acrylic acid/acrylamide-methyl propane sulfonic acid copolymer) was thiolated by conjugation with L-cysteine and preactivated by further modification with 2-mercaptonicotinic acid (MNA) in a two-step synthesis and characterized regarding degree of modification and cytotoxicity on Caco-2 cells. The mucoadhesive properties of this novel thiomer were evaluated via rheological synergism, tensile and mucosal residence time studies. Furthermore, the sprayability of the thiomer was evaluated. RESULTS The newly synthesized derivatives CG4500-SH and CG4500-S-S-MNA showed mean coupling rates of 651 µmol thiol groups and 264 µmol MNA per gram polymer, respectively. Even for the unmodified polymer a rheological synergism was observed with isolated porcine intestinal mucus, which was 2.81-fold higher in case of the preactivated thiomer. Mucoadhesion studies on freshly excised porcine intestinal mucosa confirmed these results via a 2.43-fold higher total work of adhesion and a 2.31-fold higher mucosal residence time of the preactivated thiomer. In sprayability tests it was shown that solutions of the preactivated thiomer could be sprayed in concentrations up to 12% (m/V). CONCLUSION The novel polymer CG4500-S-S-MNA is a promising sprayable excipient for mucoadhesive formulations.
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Affiliation(s)
- Felix Prüfert
- Department of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria
| | - Ulrike Hering
- Department of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria
| | - Sergey Zaichik
- Department of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria
| | - Nguyet-Minh Nguyen Le
- Department of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria; Department of Industrial Pharmacy, University of Medicine and Pharmacy, Ho Chi Minh City, Vietnam
| | - Andreas Bernkop-Schnürch
- Department of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria.
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Szabó L, Gerber-Lemaire S, Wandrey C. Strategies to Functionalize the Anionic Biopolymer Na-Alginate without Restricting Its Polyelectrolyte Properties. Polymers (Basel) 2020; 12:E919. [PMID: 32326625 PMCID: PMC7240516 DOI: 10.3390/polym12040919] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 04/09/2020] [Accepted: 04/13/2020] [Indexed: 12/14/2022] Open
Abstract
The natural anionic polyelectrolyte alginate and its derivatives are of particular interest for pharmaceutical and biomedical applications. Most interesting for such applications are alginate hydrogels, which can be processed into various shapes, self-standing or at surfaces. Increasing efforts are underway to functionalize the alginate macromolecules prior to hydrogel formation in order to overcome the shortcomings of purely ionically cross-linked alginate hydrogels that are hindering the progress of several sophisticated biomedical applications. Particularly promising are derivatives of alginate, which allow simultaneous ionic and covalent cross-linking to improve the physical properties and add biological activity to the hydrogel. This review will report recent progress in alginate modification and functionalization with special focus on synthesis procedures, which completely conserve the ionic functionality of the carboxyl groups along the backbone. Recent advances in analytical techniques and instrumentation supported the goal-directed modification and functionalization.
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Affiliation(s)
| | - Sandrine Gerber-Lemaire
- Group for Functionalized Biomaterials, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC SCI-SB-SG, Station 6, CH-1015 Lausanne, Switzerland; (L.S.); (C.W.)
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10
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Hussain Asim M, Nazir I, Jalil A, Matuszczak B, Bernkop-Schnürch A. Tetradeca-thiolated cyclodextrins: Highly mucoadhesive and in-situ gelling oligomers with prolonged mucosal adhesion. Int J Pharm 2020; 577:119040. [DOI: 10.1016/j.ijpharm.2020.119040] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 01/07/2020] [Accepted: 01/11/2020] [Indexed: 12/16/2022]
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11
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Stubbe B, Graulus GJ, Reekmans G, Courtin T, Martins JC, Van Vlierberghe S, Dubruel P, Adriaensens P. A straightforward method for quantification of vinyl functionalized water soluble alginates via 13C-NMR spectroscopy. Int J Biol Macromol 2019; 134:722-729. [PMID: 31078596 DOI: 10.1016/j.ijbiomac.2019.05.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Revised: 05/01/2019] [Accepted: 05/03/2019] [Indexed: 01/14/2023]
Abstract
Alginates are fairly abundant in nature and possess many interesting properties, including their biocompatibility and ability to absorb large amounts of water. Hence, increasing interest in their derivatization has been observed and the determination of the number of newly introduced functionalities has become a key issue. For this purpose, literature generally reports on conventional 1H-NMR spectra, typically recorded at elevated temperatures and/or after hydrolysis of the alginate to circumvent line broadening effects resulting from the high viscosity. The present work reports on the modification of alginate with methacrylate functionalities and determination of the resulting degree of substitution (DS), i.e. the number of introduced methacrylate moieties relative to the initial amount of hydroxyl groups along the alginate backbone, via NMR spectroscopy. Freeze-drying and low power water presaturation were applied to improve the quality of the 1H NMR spectra. Nevertheless, it remains a qualitative method, to be used only for mutual comparisons of samples. A new and accurate method for DS determination of methacrylated alginates, based on 13C-NMR spectroscopy, is proposed. Quantitative 13C-NMR spectra were recorded with reduced measuring times by addition of a paramagnetic relaxation agent. The proposed method will also be applicable for other water-soluble functionalized alginates and polysaccharides in general.
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Affiliation(s)
- B Stubbe
- Polymer Chemistry & Biomaterials Research Group, Department of Organic and Macromolecular Chemistry, Ghent University, Campus Sterre, Building S4, Krijgslaan 281, 9000 Ghent, Belgium
| | - G-J Graulus
- Biomolecule Design Group, Institute for Materials Research, Hasselt University, Agoralaan Building D, B-3590 Diepenbeek, Belgium
| | - G Reekmans
- Applied and Analytical Chemistry, Institute for Materials Research, Hasselt University, Agoralaan Building D, B-3590 Diepenbeek, Belgium
| | - T Courtin
- NMR and Structure Analysis Unit, Ghent University, Campus Sterre, Building S4, Krijgslaan 281, 9000 Ghent, Belgium
| | - J C Martins
- NMR and Structure Analysis Unit, Ghent University, Campus Sterre, Building S4, Krijgslaan 281, 9000 Ghent, Belgium
| | - S Van Vlierberghe
- Polymer Chemistry & Biomaterials Research Group, Department of Organic and Macromolecular Chemistry, Ghent University, Campus Sterre, Building S4, Krijgslaan 281, 9000 Ghent, Belgium
| | - P Dubruel
- Polymer Chemistry & Biomaterials Research Group, Department of Organic and Macromolecular Chemistry, Ghent University, Campus Sterre, Building S4, Krijgslaan 281, 9000 Ghent, Belgium.
| | - P Adriaensens
- Applied and Analytical Chemistry, Institute for Materials Research, Hasselt University, Agoralaan Building D, B-3590 Diepenbeek, Belgium.
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Ayub AD, Chiu HI, Mat Yusuf SNA, Abd Kadir E, Ngalim SH, Lim V. Biocompatible disulphide cross-linked sodium alginate derivative nanoparticles for oral colon-targeted drug delivery. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2019; 47:353-369. [PMID: 30691309 DOI: 10.1080/21691401.2018.1557672] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The application of layer-by-layer (LbL) approach on nanoparticle surface coating improves the colon-specific drug delivery of insoluble drugs. Here, we aimed to formulate a self-assembled cysteamine-based disulphide cross-linked sodium alginate with LbL self-assembly to improve the delivery of paclitaxel (PCX) to colonic cancer cells. Cysteamine was conjugated to the backbone of oxidized SA to form a core of self-assembled disulphide cross-linked nanospheres. P3DL was selected for PCX loading and fabricated LbL with poly(allylamine hydrochloride) (PAH) and poly(4-styrenesulfonic acid-co-maleic acid) sodium salt (PSSCMA) resulting from characterization and drug release studies. P3DL-fabricated PCX-loaded nanospheres (P3DL/PAH/PSSCMA) exhibited an encapsulation efficiency of 77.1% with cumulative drug release of 45.1%. Dynamic light scattering analysis was reported at 173.6 ± 2.5 nm with polydispersity index of 0.394 ± 0.105 (zeta potential= -58.5 mV). P3DL/PAH/PSSCMA demonstrated a pH-dependent swelling transition; from pH 1 to 7 (102.2% increase). The size increased by 33.0% in reduction response study after incubating with 10 mM glutathione (day 7). HT-29 cells showed high viabilities (86.7%) after treatment with the fabricated nanospheres at 0.8 µg/mL. Cellular internalization was successful with more than 70.0% nanospheres detected in HT-29 cells. Therefore, this fabricated nanospheres may be considered as potential nanocarriers for colon cancer-targeted chemotherapeutic drug delivery.
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Affiliation(s)
- Asila Dinie Ayub
- a Integrative Medicine Cluster, Advanced Medical and Dental Institute , Universiti Sains Malaysia , Penang , Malaysia
| | - Hock Ing Chiu
- a Integrative Medicine Cluster, Advanced Medical and Dental Institute , Universiti Sains Malaysia , Penang , Malaysia
| | - Siti Nur Aishah Mat Yusuf
- a Integrative Medicine Cluster, Advanced Medical and Dental Institute , Universiti Sains Malaysia , Penang , Malaysia.,b Department of Chemical Engineering Technology, Faculty of Engineering Technology , Universiti Malaysia Perlis , Perlis , Malaysia
| | - Erazuliana Abd Kadir
- a Integrative Medicine Cluster, Advanced Medical and Dental Institute , Universiti Sains Malaysia , Penang , Malaysia
| | - Siti Hawa Ngalim
- c Regenerative Medicine Cluster , Advanced Medical and Dental Institute, Universiti Sains Malaysia , Penang , Malaysia
| | - Vuanghao Lim
- a Integrative Medicine Cluster, Advanced Medical and Dental Institute , Universiti Sains Malaysia , Penang , Malaysia
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Asim MH, Moghadam A, Ijaz M, Mahmood A, Götz RX, Matuszczak B, Bernkop-Schnürch A. S-protected thiolated cyclodextrins as mucoadhesive oligomers for drug delivery. J Colloid Interface Sci 2018; 531:261-268. [PMID: 30036850 DOI: 10.1016/j.jcis.2018.07.062] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Revised: 07/14/2018] [Accepted: 07/16/2018] [Indexed: 11/17/2022]
Abstract
AIM The purpose of this study was to develop a novel mucoadhesive thiolated and S-protected gamma cyclodextrin (γ-CD) with an intact ring backbone to assure a prolonged residence time at specific target sites. METHOD Thiolated γ-CD was generated through bromine substitution of its hydroxyl groups followed by replacement to thiol groups using thiourea. In the second step, thiol groups were protected by disulfide bond formation with 2-mercaptonicotinic acid (2-MNA). RESULT Thiolated γ-CD displayed 1385 ± 84 µmol thiol groups per gram of oligomer and the amount of MNA determined in the S-protected oligomer was 1153 ± 41 µmol per gram of oligomer. In-vitro screening of mucoadhesive properties of thiolated and S-protected γ-CD was done by two methods. Rheological investigation revealed the conjugates non-mucolytic with only a slight increase in viscosity of thiolated and S-protected γ-CD as compared to unmodified γ-CD, whereas mucoadhesive properties of the new thiolated and S-protected γ-CD performed on freshly excised porcine intestinal mucosa showed 44.4- and 50.9-fold improvement in mucoadhesion, respectively. The new conjugates did not show any cytotoxicity to Caco-2 cells even at a concentration of 1% (m/v) for 24 h. In addition, in-vitro studies of α-amylase degradation of γ-CD, γ-CD-SH and γ-CD-SS-MNA confirmed that all conjugates are biodegradable. CONCLUSION These outcomes predict that these new conjugates of γ-CD might provide a new favorable tool for drug delivery providing a prolonged residence time on mucosal surfaces.
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Affiliation(s)
- Mulazim Hussain Asim
- Center for Chemistry and Biomedicine, Department of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria; Department of Pharmaceutics, Faculty of Pharmacy, University of Sargodha, 40100 Sargodha, Pakistan
| | - Ali Moghadam
- Center for Chemistry and Biomedicine, Department of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria; Institute of Biotechnology, College of Agriculture, Shiraz University, Shiraz, Iran
| | - Muhammad Ijaz
- Department of Pharmacy, COMSATS University Islamabad, Lahore Campus, 54000 Lahore, Pakistan
| | - Arshad Mahmood
- Department of Pharmacy, COMSATS University Islamabad, Abbottabad Campus, 22060 Abbottabad, Pakistan
| | - Roman Xaver Götz
- Center for Chemistry and Biomedicine, Department of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria
| | - Barbara Matuszczak
- Center for Chemistry and Biomedicine, Department of Pharmaceutical Chemistry, Institute of Pharmacy, University of Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria
| | - Andreas Bernkop-Schnürch
- Center for Chemistry and Biomedicine, Department of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria.
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Szilágyi BÁ, Gyarmati B, Horvát G, Laki Á, Budai-Szűcs M, Csányi E, Sandri G, Bonferoni MC, Szilágyi A. The effect of thiol content on the gelation and mucoadhesion of thiolated poly(aspartic acid). POLYM INT 2017. [DOI: 10.1002/pi.5411] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Barnabás Áron Szilágyi
- Soft Matters Group, Department of Physical Chemistry and Materials Science; Budapest University of Technology and Economics; Budapest Hungary
| | - Benjámin Gyarmati
- Soft Matters Group, Department of Physical Chemistry and Materials Science; Budapest University of Technology and Economics; Budapest Hungary
| | - Gabriella Horvát
- Institute of Pharmaceutical Technology and Regulatory Affairs; University of Szeged; Szeged Hungary
| | - Ádám Laki
- Soft Matters Group, Department of Physical Chemistry and Materials Science; Budapest University of Technology and Economics; Budapest Hungary
| | - Mária Budai-Szűcs
- Institute of Pharmaceutical Technology and Regulatory Affairs; University of Szeged; Szeged Hungary
| | - Erzsébet Csányi
- Institute of Pharmaceutical Technology and Regulatory Affairs; University of Szeged; Szeged Hungary
| | | | | | - András Szilágyi
- Soft Matters Group, Department of Physical Chemistry and Materials Science; Budapest University of Technology and Economics; Budapest Hungary
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Thiolated polymers as mucoadhesive drug delivery systems. Eur J Pharm Sci 2017; 100:64-78. [PMID: 28087353 DOI: 10.1016/j.ejps.2017.01.008] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Revised: 01/04/2017] [Accepted: 01/09/2017] [Indexed: 11/22/2022]
Abstract
Mucoadhesion is the process of binding a material to the mucosal layer of the body. Utilising both natural and synthetic polymers, mucoadhesive drug delivery is a method of controlled drug release which allows for intimate contact between the polymer and a target tissue. It has the potential to increase bioavailability, decrease potential side effects and offer protection to more sensitive drugs such as proteins and peptide based drugs. The thiolation of polymers has, in the last number of years, come to the fore of mucoadhesive drug delivery, markedly improving mucoadhesion due to the introduction of free thiol groups onto the polymer backbone while also offering a more cohesive polymeric matrix for the slower and more controlled release of drug. This review explores the concept of mucoadhesion and the recent advances in both the polymers and the methods of thiolation used in the synthesis of mucoadhesive drug delivery devices.
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Enhancing the efficiency of thiomers: Utilizing a highly mucoadhesive polymer as backbone for thiolation and preactivation. Eur J Pharm Sci 2017; 96:309-315. [DOI: 10.1016/j.ejps.2016.09.031] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Revised: 09/15/2016] [Accepted: 09/22/2016] [Indexed: 11/18/2022]
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17
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Xu G, Cheng L, Zhang Q, Sun Y, Chen C, Xu H, Chai Y, Lang M. In situ thiolated alginate hydrogel: Instant formation and its application in hemostasis. J Biomater Appl 2016; 31:721-729. [DOI: 10.1177/0885328216661557] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
An in situ formed hydrogel was synthesized by sodium alginate and cysteine methyl ester, which turned the sodium alginate into thiolated alginate (SA-SH). SA-SH can in situ formed into hydrogel (SA-SS-SA) with a large amount of water through covalent bond in less than 20 s. The structure characterization showed that the mechanism of SA-SH gelation was thiol-disulfide transformation. The rheology and cytotoxicity experiments of SA-SS-SA hydrogel were also investigated, which indicated that SA-SS-SA hydrogel had an appropriate mechanical strength as well as an excellent biocompatibility. The SA-SS-SA hydrogel would degrade under certain conditions after a few days and its mechanism was disulfide alkaline reduction. Finally, the hemostatic property of SA-SH was tested by rat tail amputation experiment. The time to hemostasis of rat reduced from 8.26 min to 3.24 min, which proved that SA-SH had an excellent hemostatic property.
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Affiliation(s)
- Guanzhe Xu
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai China
| | - Liang Cheng
- Shanghai No. 6 People’s Hospital, Shanghai, China
| | - Qintong Zhang
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai China
| | - Yunlong Sun
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai China
| | - Changlin Chen
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai China
| | - Heng Xu
- Collaborative Innovation Center for Petrochemical New Materials, Anqing, Anhui, China
| | - Yimin Chai
- Shanghai No. 6 People’s Hospital, Shanghai, China
| | - Meidong Lang
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai China
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Debotton N, Dahan A. Applications of Polymers as Pharmaceutical Excipients in Solid Oral Dosage Forms. Med Res Rev 2016; 37:52-97. [DOI: 10.1002/med.21403] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2015] [Revised: 06/07/2016] [Accepted: 06/24/2016] [Indexed: 01/10/2023]
Affiliation(s)
- Nir Debotton
- Department of Chemical Engineering; Shenkar College of Engineering and Design; Ramat-Gan Israel
| | - Arik Dahan
- Department of Clinical Pharmacology, School of Pharmacy, Faculty of Health Sciences; Ben-Gurion University of the Negev; Beer-Sheva Israel
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