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De Grave L, Di Meo C, Gréant C, Van Durme B, Gérard M, La Gatta A, Schiraldi C, Thorrez L, Bernaerts KV, Van Vlierberghe S. Photo-crosslinkable Poly(aspartic acid) for Light-based additive Manufacturing: Chain-growth versus Step-growth crosslinking. Eur Polym J 2023. [DOI: 10.1016/j.eurpolymj.2023.112017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
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2
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Szilágyi BÁ, Gyarmati B, Kiss EL, Budai-Szűcs M, Misra A, Csányi E, László K, Szilágyi A. In situ gelation of thiolated poly(aspartic acid) derivatives through oxidant-free disulfide formation for ophthalmic drug delivery. Colloids Surf B Biointerfaces 2023; 225:113254. [PMID: 36996632 DOI: 10.1016/j.colsurfb.2023.113254] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 02/21/2023] [Accepted: 03/06/2023] [Indexed: 03/13/2023]
Abstract
Efficient topical treatment of ocular diseases requires a prolonged residence time of drug formulations. An in situ gelling, mucoadhesive system can provide improved residence time while keeps the installation of the formulation easy and accurate due to its low initial viscosity. We synthesized a two-component, biocompatible water-based liquid formulation showing in situ gelation upon mixing. S-protected, preactivated derivatives of thiolated poly(aspartic acid) (PASP-SS-MNA) were synthesized by coupling the free thiol groups of thiolated poly(aspartic acid) (PASP-SH) with 6-mercaptonicotinic acid (MNA). The amount of protecting groups was 242, 341, and 530 µmol/g depending on the degree of thiolation of PASP. The chemical interaction between PASP-SS-MNA and mucin was proven, indicating the mucoadhesive properties. Disulfide cross-linked hydrogels were formed in situ without an oxidizing agent by mixing the aqueous solutions of PASP-SS-MNA and PASP-SH. The gelation time was controlled between 1 and 6 min, while the storage modulus was as high as 4-16 kPa depending on the composition. Swelling experiments showed that hydrogels with no residual thiol groups are stable in phosphate-buffered saline at pH = 7.4. In contrast, the presence of free thiol groups leads to the dissolution of the hydrogel with a rate depending on the excess of thiol groups. The biological safety of the polymers and MNA was confirmed on Madin-Darby Canine Kidney cell line. Furthermore, a prolonged release of ofloxacin was observed at pH = 7.4 compared to a conventional liquid formulation, supporting the potential of the developed biopolymers in ophthalmic drug delivery.
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3
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The effect of thiol functional groups on bovine serum albumin/chitosan buccal mucoadhesive patches. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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4
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Gyarmati B, Dargó G, Aron Szilagyi B, Vincze A, Facskó R, Budai-Szűcs M, Kiss EL, Szente L, Szilagyi A, Balogh GT. Synthesis, complex formation and corneal permeation of cyclodextrin-modified, thiolated poly(aspartic acid) as self-gelling formulation of dexamethasone. Eur J Pharm Biopharm 2022; 174:1-9. [PMID: 35341942 DOI: 10.1016/j.ejpb.2022.03.008] [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: 11/30/2021] [Revised: 02/09/2022] [Accepted: 03/22/2022] [Indexed: 11/25/2022]
Abstract
The present study aimed at developing a potential in situ gellable dexamethasone (DXM) eye drop. Poly(aspartic acid) (PASP) derivatives were synthesized with dual functionality to improve the solubility of DXM, and to achieve in situ gelation. First, amine-modified β-cyclodextrin (CD) was attached to polysuccinimide (PSI), second, thiol functionalities were added by the reaction of cysteamine and succinimide rings. Finally, the PSI derivatives were hydrolysed to the corresponding PASP derivatives to get water-soluble polymers. Phase-solubility studies confirmed the complexation ability of CD-containing PASP derivatives. In situ gelation and the effect of the CD immobilization on this behaviour were characterized by rheological measurements. The solubilizing effect of CD was confirmed by kinetic solubility measurements, whereas in vitro corneal permeability assay (corneal-PAMPA) measurements were performed to determine in vitro permeability and flux values. The effect of the PASP derivatives on permeation strongly depended on chemical composition and polymer concentration.
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Affiliation(s)
- Benjámin Gyarmati
- Department of Physical Chemistry and Materials Science, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem rkp. 3., H-1111 Budapest, Hungary
| | - Gergő Dargó
- Department of Chemical and Process Engineering, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem rakpart 3., H-1111 Budapest, Hungary
| | - Barnabas Aron Szilagyi
- Department of Physical Chemistry and Materials Science, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem rkp. 3., H-1111 Budapest, Hungary
| | - Anna Vincze
- Department of Chemical and Process Engineering, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem rakpart 3., H-1111 Budapest, Hungary
| | - Réka Facskó
- Department of Chemical and Process Engineering, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem rakpart 3., H-1111 Budapest, Hungary
| | - Mária Budai-Szűcs
- Institute of Pharmaceutical Technology and Regulatory Affairs, Faculty of Pharmacy, University of Szeged, Eötvös utca 6., H-6720 Szeged, Hungary
| | - Eszter L Kiss
- Institute of Pharmaceutical Technology and Regulatory Affairs, Faculty of Pharmacy, University of Szeged, Eötvös utca 6., H-6720 Szeged, Hungary
| | - Lajos Szente
- CycloLab Cyclodextrin R. and D. Laboratory, Ltd, H-1070 Budapest, Illatos út 7. Hungary
| | - Andras Szilagyi
- Department of Physical Chemistry and Materials Science, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem rkp. 3., H-1111 Budapest, Hungary.
| | - György T Balogh
- Department of Chemical and Process Engineering, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem rakpart 3., H-1111 Budapest, Hungary; Institute of Pharmacodynamics and Biopharmacy, University of Szeged, Eötvös utca 6., H-6720 Szeged, Hungary.
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5
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Juriga D, Kalman EE, Toth K, Barczikai D, Szöllősi D, Földes A, Varga G, Zrinyi M, Jedlovszky-Hajdu A, Nagy KS. Analysis of Three-Dimensional Cell Migration in Dopamine-Modified Poly(aspartic acid)-Based Hydrogels. Gels 2022; 8:gels8020065. [PMID: 35200447 PMCID: PMC8870902 DOI: 10.3390/gels8020065] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 01/12/2022] [Accepted: 01/14/2022] [Indexed: 12/14/2022] Open
Abstract
Several types of promising cell-based therapies for tissue regeneration have been developing worldwide. However, for successful therapeutical application of cells in this field, appropriate scaffolds are also required. Recently, the research for suitable scaffolds has been focusing on polymer hydrogels due to their similarity to the extracellular matrix. The main limitation regarding amino acid-based hydrogels is their difficult and expensive preparation, which can be avoided by using poly(aspartamide) (PASP)-based hydrogels. PASP-based materials can be chemically modified with various bioactive molecules for the final application purpose. In this study, dopamine containing PASP-based scaffolds is investigated, since dopamine influences several cell biological processes, such as adhesion, migration, proliferation, and differentiation, according to the literature. Periodontal ligament cells (PDLCs) of neuroectodermal origin and SH-SY5Y neuroblastoma cell line were used for the in vitro experiments. The chemical structure of the polymers and hydrogels was proved by 1H-NMR and FTIR spectroscopy. Scanning electron microscopical (SEM) images confirmed the suitable pore size range of the hydrogels for cell migration. Cell viability assay was carried out according to a standardized protocol using the WST-1 reagent. To visualize three-dimensional cell distribution in the hydrogel matrix, two-photon microscopy was used. According to our results, dopamine containing PASP gels can facilitate vertical cell penetration from the top of the hydrogel in the depth of around 4 cell layers (~150 μm). To quantify these observations, a detailed image analysis process was developed and firstly introduced in this paper.
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Affiliation(s)
- David Juriga
- Department of Biophysics and Radiation Biology, Semmelweis University, H-1089 Budapest, Hungary; (K.T.); (D.B.); (D.S.); (M.Z.); (A.J.-H.)
- Correspondence: (D.J.); (K.S.N.)
| | - Eszter Eva Kalman
- Department of Molecular Biology, Semmelweis University, H-1083 Budapest, Hungary;
- Department of Oral Biology, Semmelweis University, H-1089 Budapest, Hungary; (A.F.); (G.V.)
| | - Krisztina Toth
- Department of Biophysics and Radiation Biology, Semmelweis University, H-1089 Budapest, Hungary; (K.T.); (D.B.); (D.S.); (M.Z.); (A.J.-H.)
- Department of Oral Biology, Semmelweis University, H-1089 Budapest, Hungary; (A.F.); (G.V.)
| | - Dora Barczikai
- Department of Biophysics and Radiation Biology, Semmelweis University, H-1089 Budapest, Hungary; (K.T.); (D.B.); (D.S.); (M.Z.); (A.J.-H.)
| | - David Szöllősi
- Department of Biophysics and Radiation Biology, Semmelweis University, H-1089 Budapest, Hungary; (K.T.); (D.B.); (D.S.); (M.Z.); (A.J.-H.)
| | - Anna Földes
- Department of Oral Biology, Semmelweis University, H-1089 Budapest, Hungary; (A.F.); (G.V.)
| | - Gabor Varga
- Department of Oral Biology, Semmelweis University, H-1089 Budapest, Hungary; (A.F.); (G.V.)
| | - Miklos Zrinyi
- Department of Biophysics and Radiation Biology, Semmelweis University, H-1089 Budapest, Hungary; (K.T.); (D.B.); (D.S.); (M.Z.); (A.J.-H.)
| | - Angela Jedlovszky-Hajdu
- Department of Biophysics and Radiation Biology, Semmelweis University, H-1089 Budapest, Hungary; (K.T.); (D.B.); (D.S.); (M.Z.); (A.J.-H.)
| | - Krisztina S. Nagy
- Department of Biophysics and Radiation Biology, Semmelweis University, H-1089 Budapest, Hungary; (K.T.); (D.B.); (D.S.); (M.Z.); (A.J.-H.)
- Department of Oral Biology, Semmelweis University, H-1089 Budapest, Hungary; (A.F.); (G.V.)
- Correspondence: (D.J.); (K.S.N.)
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6
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Mammadova A, Gyarmati B, Sárdi K, Paudics A, Varga Z, Szilágyi A. Thiolated cationic poly(aspartamides) with side group dependent gelation properties for the delivery of anionic polyelectrolytes. J Mater Chem B 2022; 10:5946-5957. [DOI: 10.1039/d2tb00674j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In situ gellable polymers have potential applications as injectable formulations in drug delivery and regenerative medicine. Herein, thiolated cationic polyaspartamides were synthesized with two different approaches to correlate side group...
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7
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Stimuli-Responsive Poly(aspartamide) Derivatives and Their Applications as Drug Carriers. Int J Mol Sci 2021; 22:ijms22168817. [PMID: 34445521 PMCID: PMC8396293 DOI: 10.3390/ijms22168817] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 08/12/2021] [Accepted: 08/13/2021] [Indexed: 01/16/2023] Open
Abstract
Poly(aspartamide) derivatives, one kind of amino acid-based polymers with excellent biocompatibility and biodegradability, meet the key requirements for application in various areas of biomedicine. Poly(aspartamide) derivatives with stimuli-responsiveness can usually respond to external stimuli to change their chemical or physical properties. Using external stimuli such as temperature and pH as switches, these smart poly(aspartamide) derivatives can be used for convenient drug loading and controlled release. Here, we review the synthesis strategies for preparing these stimuli-responsive poly(aspartamide) derivatives and the latest developments in their applications as drug carriers.
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8
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Gyarmati B, Mammadova A, Barczikai D, Stankovits G, Misra A, Alavijeh MS, Varga Z, László K, Szilágyi A. Side group ratio as a novel means to tune the hydrolytic degradation of thiolated and disulfide cross-linked polyaspartamides. Polym Degrad Stab 2021. [DOI: 10.1016/j.polymdegradstab.2021.109577] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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9
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Adelnia H, Tran HDN, Little PJ, Blakey I, Ta HT. Poly(aspartic acid) in Biomedical Applications: From Polymerization, Modification, Properties, Degradation, and Biocompatibility to Applications. ACS Biomater Sci Eng 2021; 7:2083-2105. [PMID: 33797239 DOI: 10.1021/acsbiomaterials.1c00150] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Poly(aspartic acid) (PASP) is an anionic polypeptide that is a highly versatile, biocompatible, and biodegradable polymer that fulfils key requirements for use in a wide variety of biomedical applications. The derivatives of PASP can be readily tailored via the amine-reactive precursor, poly(succinimide) (PSI), which opens up a large window of opportunity for the design and development of novel biomaterials. PASP also has a strong affinity with calcium ions, resulting in complexation, which has been exploited for bone targeting and biomineralization. In addition, recent studies have further verified the biocompatibility and biodegradability of PASP-based polymers, which is attributed to their protein-like structure. In light of growing interest in PASP and its derivatives, this paper presents a comprehensive review on their synthesis, characterization, modification, biodegradation, biocompatibility, and applications in biomedical areas.
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Affiliation(s)
- Hossein Adelnia
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St Lucia, Queensland 4072, Australia.,Queensland Micro- and Nanotechnology, Griffith University, Nathan, Queensland 4111, Australia.,School of Pharmacy, Pharmacy Australia Centre of Excellence, The University of Queensland, Woolloongabba, Queensland 4012, Australia
| | - Huong D N Tran
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St Lucia, Queensland 4072, Australia.,Queensland Micro- and Nanotechnology, Griffith University, Nathan, Queensland 4111, Australia
| | - Peter J Little
- School of Pharmacy, Pharmacy Australia Centre of Excellence, The University of Queensland, Woolloongabba, Queensland 4012, Australia.,Sunshine Coast Health Institute, University of the Sunshine Coast, Birtinya, Queensland 4575, Australia
| | - Idriss Blakey
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St Lucia, Queensland 4072, Australia.,Centre for Advanced Imaging, University of Queensland, Brisbane, Queensland 4067, Australia
| | - Hang T Ta
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St Lucia, Queensland 4072, Australia.,Queensland Micro- and Nanotechnology, Griffith University, Nathan, Queensland 4111, Australia.,School of Environment and Science, Griffith University, Nathan, Queensland 411, Australia
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10
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Zaman M, Bajwa RI, Saeed S, Hussain MA, Hanif M. Synthesis and characterization of thiol modified beta cyclodextrin, its biocompatible analysis and application as a modified release carrier of ticagrelor. ACTA ACUST UNITED AC 2020; 16:015023. [PMID: 33027771 DOI: 10.1088/1748-605x/abbf05] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Thiol modification of beta cyclodextrin (β-CD) was carried out using thiourea, which served as a thiol donor. The chemical reaction was mediated using HCl. Polymer prepared via thiolation was further subjected to physicochemical and biocompatible analysis. Acute oral toxicity and compatibility was determined in albino rats. Furthermore, compressed tablets of ticagrelor (TCG) were prepared using modified and unmodified polymers and evaluated via various quality control tests. Thiolation was successfully achieved and confirmed by the FTIR scan, as a significant corresponding peak was observed at 2692 cm-1 wavenumber, demonstrating the attachment of -SH group. In vivo analysis has confirmed the safe use of β-CD, as none of the vital organs showed any kind of toxic effects. Dissolution studies revealed that Tβ-CD was able to release 96.62% of the drug within 1 h of the study, hence providing an immediate release. Conclusively, a thiol moiety was successfully attached to the polymeric backbone and was found safe to be used as a pharmaceutical excipient.
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Affiliation(s)
- Muhammad Zaman
- Faculty of Pharmacy, University of Central Punjab, Lahore, Pakistan. Department of Pharmaceutics, Faculty of Pharmacy, The University of Lahore, Lahore, Pakistan
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11
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Szilágyi BÁ, Mammadova A, Gyarmati B, Szilágyi A. Mucoadhesive interactions between synthetic polyaspartamides and porcine gastric mucin on the colloid size scale. Colloids Surf B Biointerfaces 2020; 194:111219. [DOI: 10.1016/j.colsurfb.2020.111219] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 06/12/2020] [Accepted: 06/23/2020] [Indexed: 01/27/2023]
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12
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Németh C, Gyarmati B, Gacs J, Salakhieva DV, Molnár K, Abdullin T, László K, Szilágyi A. Fast dissolving nanofibrous matrices prepared by electrospinning of polyaspartamides. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2020.109624] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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13
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14
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Edwards SE, Flynn S, Hobson JJ, Chambon P, Cauldbeck H, Rannard SP. Mucus-responsive functionalized emulsions: design, synthesis and study of novel branched polymers as functional emulsifiers. RSC Adv 2020; 10:30463-30475. [PMID: 35516041 PMCID: PMC9056332 DOI: 10.1039/d0ra05820c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Accepted: 07/22/2020] [Indexed: 11/26/2022] Open
Abstract
Mucus lines the moist cavities throughout the body, acting as barrier by protecting the underlying cells against the external environment, but it also hinders the permeation of drugs and drug delivery systems. As the rate of diffusion is low, the development of a system which could increase retention time at the mucosal surface would prove beneficial. Here, we have designed a range of branched copolymers to act as functional mucus-responsive oil-in-water emulsifiers comprising the hydrophilic monomer oligo(ethylene glycol) methacrylate and a hydrophobic dodecyl initiator. The study aimed to investigate the importance of chain end functionality on successful emulsion formation, by systematically replacing a fraction of the hydrophobic chain ends with a secondary poly(ethylene glycol) based hydrophilic initiator in a mixed-initiation strategy; a decrease of up to 75 mole percent of hydrophobic chain ends within the branched polymer emulsifiers was shown to maintain comparative emulsion stability. These redundant chain ends allowed for functionality to be incorporated into the polymers via a xanthate based initiator containing a masked thiol group; thiol groups are known to have mucoadhesive character, due to their ability to form disulfide bonds with the cysteine rich areas of mucus. The mucoadhesive nature of emulsions stabilised by thiol-containing branched copolymers was compared to non-functional emulsions in the presence of a biosimilar mucosal substrate and enhanced adherence to the mucosal surface was observed. Importantly, droplet rupture and mucus triggered release of dye-containing oil was seen from previously highly-stable thiol-functional emulsions; this observation was not mirrored by non-functional emulsions where droplet integrity was maintained even in the presence of mucus. Mucoadhesion and mucus-sensitive materials have many applications. Redundant chain-ends within branched polymer emulsifiers have been functionalized with thiols, without compromising emulsion stability, to create mucus-interacting emulsions.![]()
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Affiliation(s)
- Stephanie E. Edwards
- Department of Chemistry
- University of Liverpool
- UK
- Materials Innovation Factory
- University of Liverpool
| | - Sean Flynn
- Department of Chemistry
- University of Liverpool
- UK
- Materials Innovation Factory
- University of Liverpool
| | | | - Pierre Chambon
- Department of Chemistry
- University of Liverpool
- UK
- Materials Innovation Factory
- University of Liverpool
| | | | - Steve P. Rannard
- Department of Chemistry
- University of Liverpool
- UK
- Materials Innovation Factory
- University of Liverpool
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Adelnia H, Blakey I, Little PJ, Ta HT. Hydrogels Based on Poly(aspartic acid): Synthesis and Applications. Front Chem 2019; 7:755. [PMID: 31799235 PMCID: PMC6861526 DOI: 10.3389/fchem.2019.00755] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Accepted: 10/22/2019] [Indexed: 12/29/2022] Open
Abstract
This review presents an overview on the recent progress in the synthesis, crosslinking, interpenetrating networks, and applications of poly(aspartic acid) (PASP)-based hydrogels. PASP is a synthetic acidic polypeptide that has drawn a great deal of attention in diverse applications due particularly to its biocompatibility and biodegradability. Facile modification of its precursor, poly(succinimide) (PSI), by primary amines has opened a wide window for the design of state-of-the-art hydrogels. Apart from pH-sensitivity, PASP hydrogels can be modified with suitable species in order to respond to the other desired stimuli such as temperature and reducing/oxidizing media as well. Strategies for fabrication of nanostructured PASP-based hydrogels in the form of particle and fiber are also discussed. Different cross-linking agents for PSI/PASP such as diamines, dopamine, cysteamine, and aminosilanes are also introduced. Finally, applications of PASP-based hydrogels in diverse areas particularly in biomedical are reviewed.
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Affiliation(s)
- Hossein Adelnia
- Australian Institute for Bioengineering and Nanotechnology, University of Queensland, Brisbane, QLD, Australia
- School of Pharmacy, University of Queensland, Woolloongabba, QLD, Australia
| | - Idriss Blakey
- Australian Institute for Bioengineering and Nanotechnology, University of Queensland, Brisbane, QLD, Australia
| | - Peter J. Little
- School of Pharmacy, University of Queensland, Woolloongabba, QLD, Australia
- Department of Pharmacy, Xinhua College of Sun Yat-sen University, Guangzhou, China
| | - Hang T. Ta
- Australian Institute for Bioengineering and Nanotechnology, University of Queensland, Brisbane, QLD, Australia
- School of Pharmacy, University of Queensland, Woolloongabba, QLD, Australia
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Yavvari PS, Awasthi AK, Sharma A, Bajaj A, Srivastava A. Emerging biomedical applications of polyaspartic acid-derived biodegradable polyelectrolytes and polyelectrolyte complexes. J Mater Chem B 2019; 7:2102-2122. [DOI: 10.1039/c8tb02962h] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A summary of positive biomedical attributes of biodegradable polyelectrolytes (PELs) prepared from aspartic acid is provided. The utility of these PELs in emerging applications such as biomineralization modulators, antimycobacterials, biocompatible cell encapsulants and tissue adhesives is highlighted.
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Affiliation(s)
- Prabhu Srinivas Yavvari
- Department of Chemistry
- Indian Institute of Science Education and Research
- Bhauri
- Bhopal-462066
- India
| | - Anand Kumar Awasthi
- Department of Chemistry
- Indian Institute of Science Education and Research
- Bhauri
- Bhopal-462066
- India
| | - Aashish Sharma
- Department of Chemistry
- Indian Institute of Science Education and Research
- Bhauri
- Bhopal-462066
- India
| | - Avinash Bajaj
- Laboratory of Nanotechnology and Chemical Biology
- Regional Centre for Biotechnology
- NCR Biotech Science Cluster
- Faridabad-121001
- India
| | - Aasheesh Srivastava
- Department of Chemistry
- Indian Institute of Science Education and Research
- Bhauri
- Bhopal-462066
- India
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17
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Szilágyi BÁ, Némethy Á, Magyar A, Szabó I, Bősze S, Gyarmati B, Szilágyi A. Amino acid based polymer hydrogel with enzymatically degradable cross-links. REACT FUNCT POLYM 2018. [DOI: 10.1016/j.reactfunctpolym.2018.09.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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18
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19
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Asmussen SV, Gomez ML, Vallo CI. Novel hydrogels based on a high-molar-mass water-soluble dimethacrylate monomer. POLYM INT 2018. [DOI: 10.1002/pi.5557] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Silvana V Asmussen
- Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Universidad Nacional de Mar del Plata; Mar del Plata Argentina
- Departamento de Química; Universidad Nacional de Río Cuarto y CONICET; Río Cuarto Argentina
| | - Maria L Gomez
- Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Universidad Nacional de Mar del Plata; Mar del Plata Argentina
- Departamento de Química; Universidad Nacional de Río Cuarto y CONICET; Río Cuarto Argentina
| | - Claudia I Vallo
- Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Universidad Nacional de Mar del Plata; Mar del Plata Argentina
- Departamento de Química; Universidad Nacional de Río Cuarto y CONICET; Río Cuarto Argentina
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20
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Mucoadhesive Cyclodextrin-Modified Thiolated Poly(aspartic acid) as a Potential Ophthalmic Drug Delivery System. Polymers (Basel) 2018; 10:polym10020199. [PMID: 30966235 PMCID: PMC6415089 DOI: 10.3390/polym10020199] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Revised: 02/01/2018] [Accepted: 02/14/2018] [Indexed: 11/17/2022] Open
Abstract
Thiolated poly(aspartic acid) is known as a good mucoadhesive polymer in aqueous ophthalmic formulations. In this paper, cyclodextrin-modified thiolated poly(aspartic acid) was synthesized for the incorporation of prednisolone, a lipophilic ophthalmic drug, in an aqueous in situ gellable mucoadhesive solution. This polymer combines the advantages of cyclodextrins and thiolated polymers. The formation of the cyclodextrin-drug complex in the gels was analyzed by X-ray powder diffraction. The ocular applicability of the polymer was characterized by means of physicochemical, rheological and drug diffusion tests. It was established that the chemical bonding of the cyclodextrin molecule did not affect the complexation of prednisolone, while the polymer solution preserved its in situ gellable and good mucoadhesive characteristics. The chemical immobilization of cyclodextrin modified the diffusion profile of prednisolone and prolonged drug release was observed. The combination of free and immobilized cyclodextrins provided the best release profile because the free complex can diffuse rapidly, while the bonded complex ensures a prolonged action.
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