1
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Shen KH, Chiu TH, Teng KC, Yu J, Yeh YC. Fabrication of triple-crosslinked gelatin/alginate hydrogels for controlled release applications. Int J Biol Macromol 2023; 250:126133. [PMID: 37543263 DOI: 10.1016/j.ijbiomac.2023.126133] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Revised: 07/27/2023] [Accepted: 08/02/2023] [Indexed: 08/07/2023]
Abstract
Hydrogels have been demonstrated as smart drug carriers to recognize the tumor microenvironment for cancer treatment, where the dynamic crosslinks in the hydrogel network contribute to the stimuli-responsive features but also result in poor stability and weak mechanical property of the hydrogels. Here, phenylboronic acid-grafted polyethyleneimine (PBA-PEI)-modified gelatin (PPG) was synthesized to crosslink alginate dialdehyde (ADA) through imine bonds and boronate ester bonds, and then calcium ions (Ca2+) were added to introduce the third calcium-carboxylate crosslinking in the network to form the triple-crosslinked PPG/ADA-Ca2+ hydrogels. Given the three types of dynamic bonds in the network, PPG/ADA-Ca2+ hydrogels possessed a self-healing manner, stimuli-responsiveness, and better mechanical properties compared to single- or double-crosslinked hydrogels. The controlled release capability of PPG/ADA-Ca2+ hydrogels was also demonstrated, showing the encapsulated molecules can be rapidly released from the hydrogel network in the presence of hydrogen peroxide while the release rate can be slowed down at acidic pH. Furthermore, PPG/ADA-Ca2+ hydrogels presented selected cytotoxicity and drug delivery to cancer cells due to the regulated degradation by the cellular microenvironment. Taken together, PPG/ADA-Ca2+ hydrogels have been demonstrated as promising biomaterials with multiple desirable properties and dynamic features to perform controlled molecule release for biomedical applications.
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Affiliation(s)
- Ke-Han Shen
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Ting-Hsiang Chiu
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Kuang-Chih Teng
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Jiashing Yu
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Yi-Cheun Yeh
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei 10617, Taiwan.
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2
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He J, Wang M, Zhu P, Zhang H, Hu C, Zhang W. Novel polyglycerol-10 dialdehyde mediated cross-linking of sodium caseinate: Preparation, characterization, and improved emulsifying properties. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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3
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Lisman A, Butruk B, Wasiak I, Ciach T. Dextran/Albumin hydrogel sealant for Dacron(R) vascular prosthesis. J Biomater Appl 2013; 28:1386-96. [PMID: 24221140 DOI: 10.1177/0885328213509676] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
In this paper, the authors describe a novel type of hydrogel coating prepared from the copolymer of human serum albumin and oxidized dextran. The material was designed as a hydrogel sealant for polyester (Dacron®)-based vascular grafts. Dextran was chosen as a coating material due to its anti-thrombogenic properties. Prepared hydrogels were compared with similar, already known biomaterial made from gelatine with the same cross-linking agent. Obtained hydrogels, prepared from various ratios of oxidized dextran/albumin or oxidized dextran/gelatine, showed different cross-linking densities, which caused differences in swelling, degradation rate and mechanical properties. Permeability tests confirmed the complete tightness of the hydrogel-modified prosthesis. Results showed that application of the hydrogel coating provided leakage-free prosthesis and eliminated the need of pre-clotting.
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Affiliation(s)
- Anna Lisman
- Biomedical Engineering Laboratory, Faculty of Chemical and Process Engineering, Warsaw University of Technology, Warsaw, Poland
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4
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Maia J, Vazão H, Pedroso DCS, Jesus CSH, Brito RMM, Grãos M, Gil MH, Ferreira L. VEGF-Functionalized Dextran Has Longer Intracellular Bioactivity than VEGF in Endothelial Cells. Biomacromolecules 2012; 13:2906-16. [DOI: 10.1021/bm3009268] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- João Maia
- Chemical Engineering
Department,
Faculty of Science and Technology, University of Coimbra, Coimbra, Portugal
| | - Helena Vazão
- CNC
− Centre for Neuroscience
and Cell Biology, University of Coimbra, Coimbra, Portugal
- Biocant, Center for Innovation and Biotechnology, Cantanhede,
Portugal
| | - Dora C. S. Pedroso
- CNC
− Centre for Neuroscience
and Cell Biology, University of Coimbra, Coimbra, Portugal
- Biocant, Center for Innovation and Biotechnology, Cantanhede,
Portugal
| | - Catarina S. H. Jesus
- Biocant, Center for Innovation and Biotechnology, Cantanhede,
Portugal
- Chemistry Department,
Faculty
of Science and Technology, University of Coimbra, Coimbra, Portugal
| | - Rui M. M. Brito
- Biocant, Center for Innovation and Biotechnology, Cantanhede,
Portugal
- Chemistry Department,
Faculty
of Science and Technology, University of Coimbra, Coimbra, Portugal
| | - Mário Grãos
- Biocant, Center for Innovation and Biotechnology, Cantanhede,
Portugal
| | - Maria H. Gil
- Chemical Engineering
Department,
Faculty of Science and Technology, University of Coimbra, Coimbra, Portugal
| | - Lino Ferreira
- CNC
− Centre for Neuroscience
and Cell Biology, University of Coimbra, Coimbra, Portugal
- Biocant, Center for Innovation and Biotechnology, Cantanhede,
Portugal
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5
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Hwang SK, Hong JT, Jung KH, Chang BC, Hwang KS, Shin JH, Yim SP, Yoo SK. Process Optimization of Dextran Production by Leuconostoc sp. strain YSK. Isolated from Fermented Kimchi. ACTA ACUST UNITED AC 2008. [DOI: 10.5352/jls.2008.18.10.1377] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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6
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Devakumar J, Mookambeswaran V. A novel affinity-based controlled release system involving derivatives of dextran with enhanced osmotic activity. Bioconjug Chem 2007; 18:477-83. [PMID: 17256883 DOI: 10.1021/bc060050e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Dextran is a highly biocompatible molecule with osmotic activity. We synthesized histidine derivatives of dextran, DexH (dextran histidine), to test the feasibility of an IMAC-based controlled release system. DexH was synthesized by the periodate oxidation method. The effect of periodate oxidation and histidine conjugation on osmotic activity was tested. The oxidized intermediate itself exhibited higher osmotic activity than native dextran. Conjugation with histidine further increased the osmotic activity, and the resulting DexH exhibited nine times more osmotic activity than native dextran. A positive correlation was observed between the extent of derivatization with histidine and osmotic activity. Association of DexH was tested on two of the matrices, namely, Cu-IDA-Novarose and Zn-IDA-Novarose. DexH bound to both these matrices, and only partial elution was achieved with stepwise lowering of pH, and complete elution was possible only with EDTA. Interestingly, it was found that DexH in its bound state (DexH-Cu-IDA-Novarose and DexH-Zn-IDA-Novarose) exhibited lesser osmotic activity than the eluted soluble form. The IDA-Cu and IDA-Zn-based solid supports bound strongly to DexH in a species-dependent manner, as the IDA-Zn matrix selectively bound DexH with clustered histidine. Further, this DexH with clustered histidine shows higher osmotic activity. A controlled release system is proposed on the basis of this difference in the osmotic activity between the bound and eluted forms of DexH with EDTA as the external trigger to induce this transition in osmotic activity.
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Affiliation(s)
- Jyothi Devakumar
- LIMTechS, Deptartment Génie Biologique, Université de Technologie de Compiègne, 60205 Compiegne, France
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7
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Ahmad S, Tester RF, Corbett A, Karkalas J. Dextran and 5-aminosalicylic acid (5-ASA) conjugates: synthesis, characterisation and enzymic hydrolysis. Carbohydr Res 2006; 341:2694-701. [PMID: 16973138 DOI: 10.1016/j.carres.2006.08.015] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2006] [Revised: 08/14/2006] [Accepted: 08/17/2006] [Indexed: 11/22/2022]
Abstract
Mesalamine (5-aminosalicylic acid) is the drug of choice for the treatment of Crohn's disease. A scheme for the synthesis of 5-aminosalicylic acid (5-ASA) conjugates of dextrans was developed with a focus on Crohn's disease applications. Dextrans were oxidised using sodium periodate (NaIO(4)), where the aldehyde groups formed were coupled with the alpha-amino (-NH(2)) group of 5-ASA. The resulting imine bonds were unstable in water and were consequently reduced to secondary amine groups. The effects of different aspects of the conjugation reaction were studied. These included the following: the molecular weight of the dextrans, the molar proportion of NaIO(4) to the dextrans (for periodate oxidation), the pH of the conjugation solutions, the ratio 5-ASA to oxidised polysaccharide and the relationship between the degree of conjugation and the amount of enzyme hydrolysis. Conjugates incubated in HCl were stable in 0.5 and 1.0M HCl, but they underwent degradation in 2.0 and 4.0M HCl. Dextrans (MW 20,000) with various degrees of oxidation (12%, 26%, 46%, 65%, 90% and 93%) were also prepared. Each oxidised dextran sample was conjugated with 5-ASA, and the product was quantified by high-performance liquid chromatography (HPLC). Dextrans with a maximum degree of oxidation (93%) unsurprisingly gave maximum conjugation of 5-ASA (49.1mg per 100mg of product) but were resistant to dextranase hydrolysis. Less oxidised dextrans (12%) conjugated proportionally less 5-ASA (15.1mg per 100mg of product) but were successfully hydrolysed by dextranase, suggesting their potential applications for the treatment of Crohn's disease in the distal ileum and proximal colon.
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Affiliation(s)
- Shavej Ahmad
- Department of Biological and Biomedical Sciences, Glasgow Caledonian University, Glasgow G4 0BA, United Kingdom
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8
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Muangsiri W, Kirsch LE. The protein-binding and drug release properties of macromolecular conjugates containing daptomycin and dextran. Int J Pharm 2006; 315:30-43. [PMID: 16546333 DOI: 10.1016/j.ijpharm.2006.02.016] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2005] [Revised: 02/08/2006] [Accepted: 02/09/2006] [Indexed: 10/24/2022]
Abstract
Prototype daptomycin-dextran macromolecular conjugates were prepared in an attempt to modify the biodistribution and protein-binding properties of daptomycin. Synthesis of daptomycin macromolecular conjugates involved dextran activation, daptomycin-dextran coupling, and purification. The reaction mixtures were separated on a Sephadex G-100 column using 10% acetronitrile in water as a mobile phase. UV and fluorescence characteristics of high molecular weight fractions demonstrated imine product formation while the lower molecular weight fractions contained free daptomycin, imine, and anilide products. Daptomycin macromolecular conjugates were characterized by drug loading, drug release, and binding affinity for fibrinogen using HPLC analysis and surface plasmon resonance. Drug loading was calculated to be 160mg of daptomycin per gram of macromolecule. Approximately 9% of the conjugated daptomycin was released from the macromolecular conjugates in aqueous media in the pH range of 1-7.4. The conjugates possessed higher affinity for fibrinogen than that of daptomycin.
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Affiliation(s)
- Walaisiri Muangsiri
- Division of Pharmaceutics, College of Pharmacy, The University of Iowa, Iowa City, IA 52242, USA
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9
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Schoevaart R, Siebum A, van Rantwijk F, Sheldon R, Kieboom T. Glutaraldehyde Cross-link Analogues from Carbohydrates. STARCH-STARKE 2005. [DOI: 10.1002/star.200400357] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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10
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García J, Dorta MJ, Munguía O, Llabrés M, Fariña JB. Biodegradable laminar implants for sustained release of recombinant human growth hormone. Biomaterials 2002; 23:4759-64. [PMID: 12361614 DOI: 10.1016/s0142-9612(02)00225-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Due to its short half-life, renal toxicity and necessity for daily subcutaneous injections, recombinant human growth hormone (rhGH) would best be administered in a controlled release formulation. One approach to this is the use of biodegradable laminar implants based on poly(lactic/glycolic) acid. Two PLGA laminar implant formulations (10% w/w), F(1) and F(2), were designed and statistically compared with a conventional commercial injectable (Norditropin). The following variables were chosen as responses: body weight, organ weights (heart, spleen and thymus), and tibia weights and dimensions. After statistical analysis, the most sensitive responses for detecting differences between formulations were body weight, tibia length and organ weights. Initial in vitro studies of these formulations showed an incomplete gradual release (after 15 days 40% rhGH released from F(1) and 60% from F(2)) and in vivo the best results were obtained with F(1). This formulation showed the best growth curve and the highest values of all the above responses. In conclusion, this type of formulation provides a sustained release of rhGH for at least 15 days and a greater efficacy than the frequent administration of the conventional injectable.
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Affiliation(s)
- Juan García
- Pharmacy Faculty, Galenica Pharmacy Laboratory, University of La Laguna, 38200 La Laguna, Tenerife, Spain
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11
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Liu LS, Ng CK, Thompson AY, Poser JW, Spiro RC. Hyaluronate-heparin conjugate gels for the delivery of basic fibroblast growth factor (FGF-2). JOURNAL OF BIOMEDICAL MATERIALS RESEARCH 2002; 62:128-35. [PMID: 12124794 DOI: 10.1002/jbm.10238] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The stability and activity of recombinant growth factors administered locally for the repair of damaged tissue can be directly influenced by the physical structure and chemical composition of the delivery matrix. This study describes a novel basic fibroblast growth factor-2 (FGF-2) delivery system synthesized by the conjugation of a structure-stabilizing polymer, hyaluronate (HA), with a sulfated glycosaminoglycan, heparin (HP), that has inherent specific binding sites for members of the FGF family. The biopolymers were formed via stable amine or labile imine bonds by coupling amine-modified HA with oxidized heparin. The addition of recombinant human FGF-2 resulted in the rapid binding of FGF-2 to the heparin segment of the hyaluronate-heparin (HAHP) conjugate. The FGF-2 was released in vitro from the imine-bonded (HAHPi) gels in the form of FGF-2-heparin complexes through the hydrolysis of the imine bonds. In contrast, the release of growth factor from the more stable amine-bonded (HAHPa) gels required treatment with free heparin or enzymatic digestion of the hyaluronate segment. Functional analysis of the released FGF-2 showed that the HAHP conjugate gels increased both the stability and activity of the growth factor.
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Affiliation(s)
- Lin-Shu Liu
- Orquest, Inc., Mountain View, California 94043, USA.
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12
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Abstract
Dextrans are glucose polymers which have been used for more than 50 years as plasma volume expanders. Recently, however, dextrans have been investigated for delivery of drugs, proteins/enzymes, and imaging agents. These highly water soluble polymers are available commercially as different molecular weights (M(W)) with a relatively narrow M(W) distribution. Additionally, dextrans contain a large number of hydroxyl groups which can be easily conjugated to drugs and proteins by either direct attachment or through a linker. In terms of pharmacokinetics, the intact polymer is not absorbed to a significant degree after oral administration. Therefore, most of the applications of dextrans as macromolecular carriers are through injectable routes. However, a few studies have reported the potential of dextrans for site (colon)-specific delivery of drugs via the oral route. After the systemic administration, the pharmacokinetics of the conjugates of dextran with therapeutic/imaging agents are significantly affected by the kinetics of the dextran carrier. Animal and human studies have shown that both the distribution and elimination of dextrans are dependent on the M(W) and charge of these polymers. Pharmacodynamically, conjugation with dextrans has resulted in prolongation of the effect, alteration of toxicity profile, and a reduction in the immunogenicity of drugs and/or proteins. A substantial number of studies on dextran conjugates of therapeutic/imaging agents have reported favorable alteration of pharmacokinetics and pharmacodynamics of these agents. However, most of these studies have been carried out in animals, with only a few being extended to humans. Future studies should concentrate on barriers for the clinical use of dextrans as macromolecular carriers for delivery of drugs, proteins, and imaging agents.
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Affiliation(s)
- R Mehvar
- School of Pharmacy, Texas Tech University Health Sciences Center, 1300 Coulter, Amarillo, TX 79106, USA.
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