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Agboluaje EO, Cui S, Grimsey NJ, Xiong MP. Bile Acid-Targeted Hyaluronic Acid Nanoparticles for Enhanced Oral Absorption of Deferoxamine. AAPS J 2024; 26:46. [PMID: 38609650 DOI: 10.1208/s12248-024-00911-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Accepted: 03/15/2024] [Indexed: 04/14/2024] Open
Abstract
Patients with β-thalassemia and sickle cell disease often rely on blood transfusions which can lead to hemochromatosis and chronic oxidative stress in cells and tissues. Deferoxamine (DFO) is clinically approved to treat hemochromatosis but is suboptimal to patients due to its poor pharmacokinetics which requires long-term infusion regimens. Although the oral route is preferable, DFO has limited oral bioavailability. Studies have shown that hyaluronic acid (HA) and bile acid (BA) can enhance the oral absorption of poorly absorbed drugs. To improve upon the oral delivery of DFO, we report on the synthesis and characterization of HA (MW 15 kD) conjugated to two types of BA, deoxycholic acid (DOCA) and taurocholic acid (TCA), and DFO. The resulting seven polymeric conjugates all formed self-assembled nanoparticles. The degree of BA and DFO conjugation to the HA polymer was confirmed at each step through nuclear magnetic resonance, Fourier transform infrared spectroscopy, and UV-Vis spectroscopy. The best formulations for further in vitro testing were determined based on physicochemical characterizations and included HA-DFO, TCA9-HA-DFO, and DOCA9-HA-DFO. Results from in vitro assays revealed that TCA9-HA-DFO enhanced the permeation of DFO the most and was also less cytotoxic to cells compared to the free drug DFO. In addition, ferritin reduction studies indicated that the conjugation of DFO to TCA9-HA did not compromise its chelation efficiency at equivalent free DFO concentrations. This research provides supportive data for the idea that TCA conjugated to HA may enhance the oral absorption of DFO, improve its cytocompatibility, and maintain its iron chelation efficiency.
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Affiliation(s)
- Elizabeth Oladoyin Agboluaje
- Department of Pharmaceutical & Biomedical Sciences, College of Pharmacy, University of Georgia, Athens, Georgia, 30602, USA
| | - Shuolin Cui
- Department of Pharmaceutical & Biomedical Sciences, College of Pharmacy, University of Georgia, Athens, Georgia, 30602, USA
| | - Neil J Grimsey
- Department of Pharmaceutical & Biomedical Sciences, College of Pharmacy, University of Georgia, Athens, Georgia, 30602, USA
| | - May P Xiong
- Department of Pharmaceutical & Biomedical Sciences, College of Pharmacy, University of Georgia, Athens, Georgia, 30602, USA.
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2
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Grosu IG, Moț A, Filip X, Filip C. What Is Wrong with Hyaluronic Acid Chemistry? A 15N/ 13C Solid-State NMR Re-Evaluation of Its Dopamine Conjugates. Polymers (Basel) 2023; 15:2825. [PMID: 37447471 DOI: 10.3390/polym15132825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 06/23/2023] [Accepted: 06/25/2023] [Indexed: 07/15/2023] Open
Abstract
In this work, a systematic 15N/13C solid-state NMR investigation is performed on three dopamine (DA) conjugates of hyaluronic acid, considered in both its native (HA) and NaIO4-oxidized (HAOx) forms. Two of them, here named HAEDC-DA and HAOx-DA, have been previously introduced as covalent conjugates involving DA amine nitrogen: the former by EDC-mediated amide bond formation, and the latter by reaction of the Schiff base with the aldehyde moieties presumed to exist in HAOx. The third conjugate, HA-DA, is reported here for the first time; it is obtained by simply mixing hyaluronan with DA∙HCl at pH 5. The 15N ss-NMR spectra were found to be consistent in all the systems, and the DA molecules were found to be in their charged -NH3+ form, which contradicts the HAEDC-DA/HAOx-DA covalent bonding schemes proposed in the literature. The 13C ss-NMR results add useful new insights into the structure and interaction patterns of the conjugates. All of our findings are relevant for future practical applications, for instance in developing novel HA-based hydrogels. In addition, the present study demonstrates the importance of using the most appropriate analytical tools when investigating composite systems due to the complexity of hyaluronic acid conjugates. Solid-state NMR proved essential to answering the question in the title: actually, there is nothing wrong with hyaluronic acid chemistry; the claimed covalent bonds between DA and the HA(HAOx) chain do not exist in these systems, because the conditions for their formation do not hold in practice.
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Affiliation(s)
- Ioana-Georgeta Grosu
- National Institute for R&D of Isotopic and Molecular Technologies, 67-103 Donat Street, 400293 Cluj-Napoca, Romania
| | - Augustin Moț
- National Institute for R&D of Isotopic and Molecular Technologies, 67-103 Donat Street, 400293 Cluj-Napoca, Romania
- Department of Chemistry, Babeș-Bolyai University, 11 Arany Janos Street, 400028 Cluj-Napoca, Romania
| | - Xenia Filip
- National Institute for R&D of Isotopic and Molecular Technologies, 67-103 Donat Street, 400293 Cluj-Napoca, Romania
| | - Claudiu Filip
- National Institute for R&D of Isotopic and Molecular Technologies, 67-103 Donat Street, 400293 Cluj-Napoca, Romania
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Nguyen DD, Luo LJ, Yang CJ, Lai JY. Highly Retina-Permeating and Long-Acting Resveratrol/Metformin Nanotherapeutics for Enhanced Treatment of Macular Degeneration. ACS NANO 2023; 17:168-183. [PMID: 36524981 DOI: 10.1021/acsnano.2c05824] [Citation(s) in RCA: 50] [Impact Index Per Article: 50.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
The development of therapeutics for effective treatments of retinal diseases is significantly constrained by various biological barriers. We herein report a nanomedicine strategy to develop nanotherapeutics featured with not only high retinal permeability but also sustained bioactive delivery. Specifically, the nanotherapeutics are rationally designed via aminolysis of resveratrol-encapsulated polycaprolactone nanoparticles (R@PCL NPs), followed by the formation of amide linkages with carboxyl-terminated transacting activator of transcription cell penetrating peptide (T) and metformin (M). The R@PCL-T/M NP nanotherapeutics are demonstrated in vitro to possess persistent drug release profiles, good ocular biocompatibility, and potent bioactive activities for targeting prevailing risk factors associated with retinal diseases. In vivo studies indicate that single-dose intravitreal administration of the R@PCL-T/M NPs can effectively improve retinal permeability (∼15-fold increase), prevent loss of endogenous antioxidants, and suppress the growth of abnormal vessels in the retina with macular degeneration for 56 days. This high treatment efficacy can be ascribed to the enhanced retinal permeability of the nanotherapeutics in conjunction with the sustained pharmacological activity of the dual drugs (R and M) in the retinal pigment epithelial region. These findings show a great promise for the development of pharmacological nanoformulations capable of targeting the retina and thereby treating complex posterior segment diseases with improved efficacies.
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Affiliation(s)
- Duc Dung Nguyen
- Department of Biomedical Engineering, Chang Gung University, Taoyuan 33302, Taiwan
| | - Li-Jyuan Luo
- Department of Biomedical Engineering, Chang Gung University, Taoyuan 33302, Taiwan
| | - Chia-Jung Yang
- Department of Biomedical Engineering, Chang Gung University, Taoyuan 33302, Taiwan
| | - Jui-Yang Lai
- Department of Biomedical Engineering, Chang Gung University, Taoyuan 33302, Taiwan
- Department of Ophthalmology, Chang Gung Memorial Hospital, Linkou, Taoyuan 33305, Taiwan
- Department of Materials Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan
- Research Center for Chinese Herbal Medicine, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan 33303, Taiwan
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França CG, Leme KC, Luzo ÂCM, Hernandez-Montelongo J, Santana MHA. Oxidized hyaluronic acid/adipic acid dihydrazide hydrogel as cell microcarriers for tissue regeneration applications. E-POLYMERS 2022. [DOI: 10.1515/epoly-2022-0086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Abstract
Hyaluronic acid (HA) is a biopolymer present in various human tissues, whose degradation causes tissue damage and diseases. The oxidized hyaluronic acid/adipic acid dihydrazide (oxi-HA/ADH) hydrogels have attracted attention due to their advantages such as thermosensitivity, injectability, in situ gelation, and sterilization. However, studies are still scarce in the literature as microcarriers. In that sense, this work is a study of oxi-HA/ADH microparticles of 215.6 ± 2.7 µm obtained by high-speed shearing (18,000 rpm at pH 7) as cell microcarriers. Results showed that BALB/c 3T3 fibroblasts and adipose mesenchymal stem cells (h-AdMSC) cultured on the oxi-HA/ADH microcarriers presented a higher growth of both cells in comparison with the hydrogel. Moreover, the extrusion force of oxi-HA/ADH microparticles was reduced by 35% and 55% with the addition of 25% and 75% HA fluid, respectively, thus improving its injectability. These results showed that oxi-HA/ADH microcarriers can be a potential injectable biopolymer for tissue regeneration applications.
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Affiliation(s)
- Carla Giometti França
- Department of Materials and Bioprocess Engineering, School of Chemical Engineering, University of Campinas , 13083-852 , Campinas , SP , Brazil
| | - Krissia Caroline Leme
- Haematology & Hemotherapy Center, Umbilical Cord Blood Bank, University of Campinas , 13083-878 , Campinas , SP , Brazil
| | - Ângela Cristina Malheiros Luzo
- Haematology & Hemotherapy Center, Umbilical Cord Blood Bank, University of Campinas , 13083-878 , Campinas , SP , Brazil
| | | | - Maria Helena Andrade Santana
- Department of Materials and Bioprocess Engineering, School of Chemical Engineering, University of Campinas , 13083-852 , Campinas , SP , Brazil
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Sutureless transplantation using a semi-interpenetrating polymer network bioadhesive for ocular surface reconstruction. Acta Biomater 2022; 153:273-286. [PMID: 36162761 DOI: 10.1016/j.actbio.2022.09.049] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 08/27/2022] [Accepted: 09/19/2022] [Indexed: 11/21/2022]
Abstract
The conjunctiva covers the largest area of ocular surface and is responsible for tear balance and clear vision. After trauma or surgery, the conjunctiva is prone to scarring and contracture. Transplantation with suture often implies numerous complications, such as inflammation, suture erosion, granuloma. And the suture needs to be removed, which means a secondary trauma. In this study, a (GMO) for sutureless conjunctival transplantation was developed based on a semi-interpenetrating polymer network (sIPN) consisting of gelatin methacrylate (GelMA) and oxidized hyaluronic acid (OHA). The maximum adhesion strength was 157 ± 17 kPa, and the burst pressure was 357 ± 29 kPa, which was 15 times higher than the human intraocular pressure (IOP). GMO bioadhesive hydrogel significantly improved surgical efficiency and secured the collagen scaffold firmly to a rabbit conjunctival defect. The sutureless transplantation approach revealed the promoted tissue repair without scar. In conclusion, GMO bioadhesive may be an attractive alternative to suture for ocular surface reconstruction by avoiding suture-related complications and improving clinical outcome. STATEMENT OF SIGNIFICANCE: Conjunctival tissue is prone to scarring and contracture after trauma, and surgery with sutures often implies numerous complications. In this study, the ocular surface reconstruction was achieved by sutureless transplantation of conjunctival scaffold using bioadhesive hydrogel. The prepared GMO bioadhesive based on the semi-interpenetrating network of gelatin methacrylate (GelMA) and oxidized hyaluronic acid (OHA) had favorable adhesion and mechanical properties. The sutureless transplantation approach significantly improved the operation efficiency, avoided suture-related complications, and promoted the regeneration of conjunctiva. This study highlights the great potential of the sutureless repair strategy for clinical application in ocular surface reconstruction.
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Oxidation-mediated scaffold engineering of hyaluronic acid-based microcarriers enhances corneal stromal regeneration. Carbohydr Polym 2022; 292:119668. [DOI: 10.1016/j.carbpol.2022.119668] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 05/13/2022] [Accepted: 05/25/2022] [Indexed: 12/22/2022]
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7
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Yi X, Xu Z, Liu Q, Zhou H, Yuan L, Li D, Zhao L, Mu C, Ge L. Matrix metalloproteinase-responsive collagen-oxidized hyaluronic acid injectable hydrogels for osteoarthritic therapy. BIOMATERIALS ADVANCES 2022; 137:212804. [PMID: 35929283 DOI: 10.1016/j.bioadv.2022.212804] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 04/01/2022] [Accepted: 04/11/2022] [Indexed: 06/15/2023]
Abstract
Drug delivery system and intra-articular injection have been clinically applied to prolong drug residence time and reduce side effects in the treatment of osteoarthrosis. Herein, injectable hydrogels with sustained-dexamethasone sodium phosphate (DSP) release behavior in response to matrix metalloproteinase (MMP) were developed for osteoarthritic therapy. Hyaluronic acid undergoes specific oxidation in the present of sodium periodate to prepare oxidized hyaluronic acid (OHA). Then the DSP-loaded collagen-based hydrogels (Col-OHA) were developed by the Schiff's base crosslinking between OHA and Type I collagen besides the self-assembly of collagen induced by OHA. The results indicate that the collagen self-assembly into collagen fibrils makes great contribution for shortening gelation time of Col-OHA hydrogels. Col-OHA hydrogels possess interconnected porous microstructure, good injectability, excellent self-healing performance, strong mechanical property, low swelling ability, good blood compatibility and no cytotoxicity. Significantly, Col-OHA hydrogels show highly sensitive and significantly substantially sustained release of DSP in response to MMP. DSP-loaded Col-OHA hydrogel possesses significant inhibition for the production of inflammatory cytokines in the joint synovium, which can effectively relieve the symptoms of osteoarthritis continuously. Col-OHA hydrogel has no obvious effect on liver and kidney functions. Overall, the Col-OHA hydrogels with excellent biocompatibility are the promising drug-loading system for the intra-articular injection therapy of osteoarthrosis.
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Affiliation(s)
- Xueling Yi
- Department of Pharmaceutics and Bioengineering, School of Chemical Engineering, Sichuan University, Chengdu 610065, PR China
| | - Zhilang Xu
- Department of Pharmaceutics and Bioengineering, School of Chemical Engineering, Sichuan University, Chengdu 610065, PR China
| | - Qisong Liu
- Research Institute of Natural Gas Technology, Petro China Southwest Oil & Gas Field Company, Chengdu 610213, PR China
| | - Hongmei Zhou
- Department of Pharmaceutics and Bioengineering, School of Chemical Engineering, Sichuan University, Chengdu 610065, PR China
| | - Lun Yuan
- Department of Pharmaceutics and Bioengineering, School of Chemical Engineering, Sichuan University, Chengdu 610065, PR China
| | - Defu Li
- Department of Pharmaceutics and Bioengineering, School of Chemical Engineering, Sichuan University, Chengdu 610065, PR China
| | - Lei Zhao
- Department of Periodontics, West China Hospital of Stomatology, Sichuan University, 610041, PR China
| | - Changdao Mu
- Department of Pharmaceutics and Bioengineering, School of Chemical Engineering, Sichuan University, Chengdu 610065, PR China
| | - Liming Ge
- Department of Pharmaceutics and Bioengineering, School of Chemical Engineering, Sichuan University, Chengdu 610065, PR China.
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8
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Physical optimization of cell proliferation and differentiation using spinner flask and microcarriers. AMB Express 2022; 12:63. [PMID: 35639184 PMCID: PMC9156609 DOI: 10.1186/s13568-022-01397-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Accepted: 05/04/2022] [Indexed: 12/05/2022] Open
Abstract
Abstract The traditional breeding industry has been increasingly saturated and caused environmental pollution, disease transmission, excessive resource use, and methane emission; however, it still cannot meet the needs of the growing population. To explore other alternatives, researchers focused on cell agriculture and cell-based meat, especially large-scale cell culture. As a prerequisite for production, large-scale culture technology has become an important bottleneck restricting cell-based meat industrialization. In this study, the single-factor variable method was adopted to examine the influence of Cytodex1 microcarrier pretreatment, spinner flask reaction vessel, cell culture medium, serum and cell incubation, and other influencing factors on large-scale cell cultures to identify the optimization parameters suitable for 3D culture environment. Collagen and 3D culture were also prospectively explored to promote myogenesis and cultivate tissue-like muscle fibers that contract spontaneously. This research lays a theoretical foundation and an exploratory practice for large-scale cell cultures and provides a study reference for the microenvironment of myoblast culture in vitro, a feasible direction for the cell therapy of muscular dystrophy, and prerequisites for the industrialized manufacturing of cell-based meat. Graphical Abstract Graphical summary: Research on large-scale myoblast culture using spinner flasks and microcarriers. For cell culture, the microcarriers were pretreated with UV and collagen. Cell seeding condition, spinner flask speed, resting time, and spinner flask culture microenvironment were then optimized. Finally, two culture systems were prepared: a culture system based on large-scale cell expansion and a culture system for myogenesis promotion and differentiation ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s13568-022-01397-8.
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Kuth S, Karakaya E, Reiter N, Schmidt L, Paulsen F, Teßmar J, Budday S, Boccaccini AR. Oxidized Hyaluronic Acid-Gelatin-Based Hydrogels for Tissue Engineering and Soft Tissue Mimicking. Tissue Eng Part C Methods 2022; 28:301-313. [PMID: 35216525 DOI: 10.1089/ten.tec.2022.0004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Hydrogels are ideal materials for mimicking and engineering soft tissue. Hyaluronic acid is a linear polysaccharide native to the human extracellular matrix. In this study, we first develop and characterize two hydrogel compositions built from oxidized HA and gelatin with and without alginate-di-aldehyde (ADA) crosslinked by ionic and enzymatic agents with potential applications in soft tissue engineering and tissue mimicking structures. The stability under incubation conditions was improved by adjusting crosslinking times. Through large-strain mechanical measurements, the hydrogels' properties were compared to human brain tissue and the samples containing ADA revealed similar mechanical properties to the native tissue specimens in cyclic compression-tension. In vitro characterization demonstrated a high viability of encapsulated mouse embryonic fibroblasts and a spreading of the cells in case of ADA-free samples.
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Affiliation(s)
- Sonja Kuth
- Institute of Biomaterials, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Emine Karakaya
- Institute of Biomaterials, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Nina Reiter
- Institute of Applied Mechanics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Laura Schmidt
- Institute of Biomaterials, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Friedrich Paulsen
- Institute of Functional and Clinical Anatomy, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Jörg Teßmar
- Department for Functional Materials in Medicine and Dentistry, University of Würzburg, Germany
| | - Silvia Budday
- Institute of Applied Mechanics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Aldo R Boccaccini
- Institute of Biomaterials, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
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Zhang W, Jiang Y, Wang H, Li Q, Tang K. In situ forming hydrogel recombination with tissue adhesion and antibacterial property for tissue adhesive. J Biomater Appl 2022; 37:12-22. [DOI: 10.1177/08853282221078159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In situ forming hydrogels with strong adhesive strength and antibacterial activity are of great interest to serve as tissue adhesive in fields like wound dressing and mass hemorrhage. In this study, hybrid hydrogel (GOHA) based on gelatin and oxidized hyaluronic acid was developed and endowed with excellent mechanical strength and tissue adhesion. According to our results, GOHA hydrogel exhibits a fast gelation time of around 60 s, robust compression strength of 223.43 ± 24.28 kPa, and strong adhesion of 14.33 ± 0.78 kPa to porcine skin, which is much higher than that of commercial fibrin glue (around 1.00 kPa). Meanwhile, through the loading of levofloxacin, obvious antibacterial activity can be obtained for wider applications. Notably, it would not compromise the hemocompatibility and cytocompatibility in vitro. In summary, this kind of hybrid hydrogel shows great potential as tissue adhesive in biomedical fields.
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Affiliation(s)
- Wenjie Zhang
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, China
| | - Yongchao Jiang
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, China
| | - Haonan Wang
- National Center for International Research of Micro-Nano Molding Technology, Zhengzhou University, Zhengzhou, China
| | - Qian Li
- National Center for International Research of Micro-Nano Molding Technology, Zhengzhou University, Zhengzhou, China
| | - Keyong Tang
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, China
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11
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Nguyen DD, Lue SJ, Lai JY. Tailoring therapeutic properties of silver nanoparticles for effective bacterial keratitis treatment. Colloids Surf B Biointerfaces 2021; 205:111856. [PMID: 34022702 DOI: 10.1016/j.colsurfb.2021.111856] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 04/17/2021] [Accepted: 05/13/2021] [Indexed: 11/28/2022]
Abstract
The formulation of nanoparticles with intrinsically therapeutic properties in a tailorable and appropriate manner is critical in nanomedicine for effective treatments of infectious diseases. Here, we present a biomedical strategy to formulate silver nanoparticles (AgNPs) as intrinsically therapeutic agents for the treatment of Staphylococcus aureus (S. aureus) keratitis. Specifically, AgNPs are controllably obtained as spheres, wrapped with a biopolymer, and varied in sizes. in vitro and in vivo studies indicate that biological interactions between the AgNPs and corneal keratocytes, S. aureus bacteria, and blood vessels are strongly determined by the particle sizes. As the size increased from 3.3 ± 0.7 to 37.2 ± 5.3 nm, the AgNPs exhibit better ocular biocompatibility and stronger antiangiogenic activity, but poorer bactericidal performance. In a rabbit model of S. Aureus-induced keratitis, intrastromal injection of AgNP formulations (single dose) show substantial influences of particle size on the treatment efficacy. As the trade-off, AgNPs with medium size of 15.0 ± 3.6 nm reveal as the best therapeutic agent that could offer ∼5.6 and ∼9.1-fold greater corneal thickness recovery respectively compared to those with smaller and larger sizes at 3 days post-administration. These findings suggest an important advance in structural design for formulating intrinsically therapeutic nano-agents toward the efficient management of infectious diseases.
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Affiliation(s)
- Duc Dung Nguyen
- Graduate Institute of Biomedical Engineering, Chang Gung University, Taoyuan, 33302, Taiwan
| | - Shingjiang Jessie Lue
- Department of Chemical and Materials Engineering, Chang Gung University, Taoyuan, 33302, Taiwan; Division of Joint Reconstruction, Department of Orthopedics, Chang Gung Memorial Hospital, Taoyuan, 33305, Taiwan; Department of Safety, Health and Environmental Engineering, Ming Chi University of Technology, New Taipei City, 24301, Taiwan
| | - Jui-Yang Lai
- Graduate Institute of Biomedical Engineering, Chang Gung University, Taoyuan, 33302, Taiwan; Department of Ophthalmology, Chang Gung Memorial Hospital, Linkou, Taoyuan, 33305, Taiwan; Department of Materials Engineering, Ming Chi University of Technology, New Taipei City, 24301, Taiwan; Research Center for Chinese Herbal Medicine, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan, 33303, Taiwan.
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12
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Öztürk-Öncel MÖ, Erkoc-Biradli FZ, Rasier R, Marcali M, Elbuken C, Garipcan B. Rose petal topography mimicked poly(dimethylsiloxane) substrates for enhanced corneal endothelial cell behavior. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 126:112147. [PMID: 34082958 DOI: 10.1016/j.msec.2021.112147] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 04/05/2021] [Accepted: 04/26/2021] [Indexed: 12/29/2022]
Abstract
Low proliferation capacity of corneal endothelial cells (CECs) and worldwide limitations in transplantable donor tissues reveal the critical need of a robust approach for in vitro CEC growth. However, preservation of CEC-specific phenotype with increased proliferation has been a great challenge. Here we offer a biomimetic cell substrate design, by optimizing mechanical, topographical and biochemical characteristics of materials with CEC microenvironment. We showed the surprising similarity between topographical features of white rose petals and corneal endothelium due to hexagonal cell shapes and physiologically relevant cell density (≈ 2000 cells/mm2). Polydimethylsiloxane (PDMS) substrates with replica of white rose petal topography and cornea-friendly Young's modulus (211.85 ± 74.9 kPa) were functionalized with two of the important corneal extracellular matrix (ECM) components, collagen IV (COL 4) and hyaluronic acid (HA). White rose petal patterned and COL 4 modified PDMS with optimized stiffness provided enhanced bovine CEC response with higher density monolayers and increased phenotypic marker expression. This biomimetic approach demonstrates a successful platform to improve in vitro cell substrate properties of PDMS for corneal applications, suggesting an alternative environment for CEC-based therapies, drug toxicity investigations, microfluidics and organ-on-chip applications.
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Affiliation(s)
| | | | - Rıfat Rasier
- Department of Ophthalmology, Demiroglu Bilim University, Istanbul, Turkey
| | - Merve Marcali
- UNAM-National Nanotechnology Research Center, Institute of Materials Science and Nanotechnology, Bilkent University, Ankara, Turkey
| | - Caglar Elbuken
- UNAM-National Nanotechnology Research Center, Institute of Materials Science and Nanotechnology, Bilkent University, Ankara, Turkey; Faculty of Biochemistry and Molecular Medicine, Faculty of Medicine, University of Oulu, 90014 Oulu, Finland
| | - Bora Garipcan
- Institute of Biomedical Engineering, Boğaziçi University, Istanbul, Turkey.
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13
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Joo H, Park J, Sutthiwanjampa C, Kim H, Bae T, Kim W, Choi J, Kim M, Kang S, Park H. Surface Coating with Hyaluronic Acid-Gelatin-Crosslinked Hydrogel on Gelatin-Conjugated Poly(dimethylsiloxane) for Implantable Medical Device-Induced Fibrosis. Pharmaceutics 2021; 13:pharmaceutics13020269. [PMID: 33671146 PMCID: PMC7922955 DOI: 10.3390/pharmaceutics13020269] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 02/09/2021] [Accepted: 02/12/2021] [Indexed: 12/26/2022] Open
Abstract
Polydimethylsiloxane (PDMS) is a biocompatible polymer that has been applied in many fields. However, the surface hydrophobicity of PDMS can limit successful implementation, and this must be reduced by surface modification to improve biocompatibility. In this study, we modified the PDMS surface with a hydrogel and investigated the effect of this on hydrophilicity, bacterial adhesion, cell viability, immune response, and biocompatibility of PDMS. Hydrogels were created from hyaluronic acid and gelatin using a Schiff-base reaction. The PDMS surface and hydrogel were characterized using nuclear magnetic resonance, X-ray photoelectron spectroscopy, attenuated total reflection Fourier-transform infrared spectroscopy, and scanning electron microscopy. The hydrophilicity of the surface was confirmed via a decrease in the water contact angle. Bacterial anti-adhesion was demonstrated for Pseudomonas aeruginosa, Ralstonia pickettii, and Staphylococcus epidermidis, and viability and improved distribution of human-derived adipose stem cells were also confirmed. Decreased capsular tissue responses were observed in vivo with looser collagen distribution and reduced cytokine expression on the hydrogel-coated surface. Hydrogel coating on treated PDMS is a promising method to improve the surface hydrophilicity and biocompatibility for surface modification of biomedical applications.
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Affiliation(s)
- Haejin Joo
- Department of Integrative Engineering, Chung-Ang University, Seoul 06974, Korea; (H.J.); (C.S.)
| | - Jonghyun Park
- Department of Plastic and Reconstructive Surgery, Chung-Ang University Hospital, Seoul 06973, Korea; (J.P.); (H.K.); (T.B.); (W.K.)
| | | | - Hankoo Kim
- Department of Plastic and Reconstructive Surgery, Chung-Ang University Hospital, Seoul 06973, Korea; (J.P.); (H.K.); (T.B.); (W.K.)
| | - Taehui Bae
- Department of Plastic and Reconstructive Surgery, Chung-Ang University Hospital, Seoul 06973, Korea; (J.P.); (H.K.); (T.B.); (W.K.)
| | - Wooseob Kim
- Department of Plastic and Reconstructive Surgery, Chung-Ang University Hospital, Seoul 06973, Korea; (J.P.); (H.K.); (T.B.); (W.K.)
| | - Jinhwa Choi
- Department of Radiation Oncology, Chung-Ang University Hospital, Seoul 06973, Korea;
| | - Mikyung Kim
- Department of Pathology, Chung-Ang University Hospital, Seoul 06973, Korea;
| | - Shinhyuk Kang
- Department of Plastic and Reconstructive Surgery, Chung-Ang University Hospital, Seoul 06973, Korea; (J.P.); (H.K.); (T.B.); (W.K.)
- Correspondence: (S.K.); (H.P.); Tel.: +82-2-6299-1615 (S.K.); +82-2-820-5940 (H.P.)
| | - Hansoo Park
- Department of Integrative Engineering, Chung-Ang University, Seoul 06974, Korea; (H.J.); (C.S.)
- Correspondence: (S.K.); (H.P.); Tel.: +82-2-6299-1615 (S.K.); +82-2-820-5940 (H.P.)
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Farasatkia A, Kharaziha M, Ashrafizadeh F, Salehi S. Transparent silk/gelatin methacrylate (GelMA) fibrillar film for corneal regeneration. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 120:111744. [DOI: 10.1016/j.msec.2020.111744] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 10/20/2020] [Accepted: 11/18/2020] [Indexed: 12/13/2022]
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15
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Jiang J, Liu A, Chen C, Tang J, Fan H, Sun J, Fan H. An efficient two-step preparation of photocrosslinked gelatin microspheres as cell carriers to support MC3T3-E1 cells osteogenic performance. Colloids Surf B Biointerfaces 2020; 188:110798. [DOI: 10.1016/j.colsurfb.2020.110798] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Revised: 12/26/2019] [Accepted: 01/13/2020] [Indexed: 02/07/2023]
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16
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Pandit AH, Mazumdar N, Ahmad S. Periodate oxidized hyaluronic acid-based hydrogel scaffolds for tissue engineering applications. Int J Biol Macromol 2019; 137:853-869. [DOI: 10.1016/j.ijbiomac.2019.07.014] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Revised: 06/24/2019] [Accepted: 07/02/2019] [Indexed: 02/06/2023]
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17
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Dual-functional gelatin-capped silver nanoparticles for antibacterial and antiangiogenic treatment of bacterial keratitis. J Colloid Interface Sci 2019; 536:112-126. [DOI: 10.1016/j.jcis.2018.10.041] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Revised: 10/15/2018] [Accepted: 10/16/2018] [Indexed: 02/08/2023]
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18
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Development of gelatin/ascorbic acid cryogels for potential use in corneal stromal tissue engineering. Acta Biomater 2018; 65:123-136. [PMID: 29128534 DOI: 10.1016/j.actbio.2017.11.018] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2017] [Revised: 10/15/2017] [Accepted: 11/07/2017] [Indexed: 01/25/2023]
Abstract
To offer an ideal hospitable environment for corneal keratocyte growth, the carrier materials can be functionalized with incorporation of signaling molecules to regulate cell biological events. This study reports, for the first time, the development of gelatin/ascorbic acid (AA) cryogels for keratocyte carriers in vitro and in vivo. The cryogel samples were fabricated by blending of gelatin with varying amounts of AA (0-300 mg) and carbodiimide cross-linking via cryogelation technique. Hydrophilic AA content in the carriers was found to significantly affect cross-linking degree and pore dimension of cryogels, thereby dictating their mechanical and biological stability and AA release profile. The cryogel carriers with low-to-moderate AA loadings were well tolerated by rabbit keratocyte cultures and anterior segment eye tissues, demonstrating good ocular biocompatibility. Although higher incorporated AA level contributed to enhanced metabolic activity and biosynthetic capacity of keratocytes grown on cryogel matrices, the presence of excessive amounts of AA molecules could lead to toxic effect and limit cell proliferation and matrix production. The cytoprotective activity against oxidative stress was shown to be strongly dependent on AA release, which further determined cell culture performance and tissue reconstruction efficiency. With the optimum AA content in carrier materials, intrastromally implanted cell/cryogel constructs exhibited better capability to enhance tissue matrix regeneration and transparency maintenance as well as to mitigate corneal damage in an alkali burn-induced animal model. It is concluded that understanding of antioxidant molecule-mediated structure-property-function interrelationships in gelatin/AA cryogels is critical to designing carrier materials for potential use in corneal stromal tissue engineering. STATEMENT OF SIGNIFICANCE Multifunctional cryogel material can offer an ideal hospitable environment for cell-mediated tissue reconstruction. To our knowledge, this is the first report describing the use of gelatin/ascorbic acid (AA) cryogels as keratocyte carriers for corneal stromal tissue engineering. The AA loading during cryogel fabrication is found to have a significant effect on cross-linking degree and pore dimension, mechanical and biological stability, ocular biocompatibility, cell culture performance, and cytoprotective activity, giving comprehensive insight into fine-tuning the structure-property-function interrelationships of keratocyte carrier material. Using an alkali burn-induced animal model, we present evidence that with the optimum AA loading into cryogel materials, intrastromally implanted cell/carrier constructs exhibited better capability to enhance tissue matrix regeneration and transparency maintenance as well as to mitigate corneal damage.
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Ocular biocompatibility of gelatin microcarriers functionalized with oxidized hyaluronic acid. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 72:150-159. [DOI: 10.1016/j.msec.2016.11.067] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2016] [Revised: 10/26/2016] [Accepted: 11/17/2016] [Indexed: 11/21/2022]
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21
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Chou SF, Luo LJ, Lai JY. Gallic acid grafting effect on delivery performance and antiglaucoma efficacy of antioxidant-functionalized intracameral pilocarpine carriers. Acta Biomater 2016; 38:116-28. [PMID: 27130273 DOI: 10.1016/j.actbio.2016.04.035] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2015] [Revised: 04/21/2016] [Accepted: 04/25/2016] [Indexed: 01/27/2023]
Abstract
UNLABELLED Functionalization of therapeutic carrier biomaterials can potentially provide additional benefits in drug delivery for disease treatment. Given that this modification determines final therapeutic efficacy of drug carriers, here, we investigate systematically the role of grafting amount of antioxidant gallic acid (GA) onto GN in situ gelling copolymers made of biodegradable gelatin and thermo-responsive poly(N-isopropylacrylamide) for intracameral delivery of pilocarpine in antiglaucoma treatment. As expected, increasing redox reaction time increased total antioxidant activities and free radical scavenging abilities of synthesized carrier biomaterials. The hydrophilic nature of antioxidant molecules strongly affected physicochemical properties of carrier materials with varying GA grafting amounts, thereby dictating in vitro release behaviors and mechanisms of pilocarpine. In vitro oxidative stress challenges revealed that biocompatible carriers with high GA content alleviated lens epithelial cell damage and reduced reactive oxygen species. Intraocular pressure and pupil diameter in glaucomatous rabbits showed correlations with GA-mediated release of pilocarpine. Additionally, enhanced pharmacological treatment effects prevented corneal endothelial cell loss during disease progression. Increasing GA content increased total antioxidant level and decreased nitrite level in the aqueous humor, suggesting a much improved antioxidant status in glaucomatous eyes. This work significantly highlights the dependence of physicochemical properties, drug release behaviors, and bioactivities on intrinsic antioxidant capacities of therapeutic carrier biomaterials for glaucoma treatment. STATEMENT OF SIGNIFICANCE Development of injectable biodegradable polymer depots and functionalization of carrier biomaterials with antioxidant can potentially provide benefits such as improved bioavailability, controlled release pattern, and increased therapeutic effect in intracameral pilocarpine administration for glaucoma treatment. For the first time, this study demonstrated that the biodegradable in situ gelling copolymers can incorporate different levels of antioxidant gallic acid to tailor the structure-property-function relationship of the intracameral drug delivery system. The systematic evaluation fully verified the dependence of phase transition, degradation behavior, drug release mechanism, and antiglaucoma efficacy on intrinsic antioxidant capacities of carrier biomaterials. The report highlights the significant role of grafting amount of gallic acid in optimizing performance of antioxidant-functionalized polymer therapeutics as new drug delivery platforms in disease treatment.
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22
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Chou SF, Luo LJ, Lai JY, Ma DHK. On the importance of Bloom number of gelatin to the development of biodegradable in situ gelling copolymers for intracameral drug delivery. Int J Pharm 2016; 511:30-43. [PMID: 27374201 DOI: 10.1016/j.ijpharm.2016.06.129] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Revised: 06/14/2016] [Accepted: 06/29/2016] [Indexed: 01/27/2023]
Abstract
To overcome the drawbacks associated with conventional antiglaucoma eye drops, this work demonstrated the feasibility of an effective alternative strategy to administer pilocarpine directly via intracameral injections of drug-containing biodegradable in situ gelling GN copolymers composed of gelatin and poly(N-isopropylacrylamide). Specifically, this study aims to understand the importance of Bloom number of gelatin, a physicochemical parameter, to the development of GN carriers for intracameral drug delivery in glaucoma therapy. Our results showed that both imino acid and triple-helix contents increased with increasing Bloom index from 75-100 to 300. The drug encapsulation efficiency in response to temperature-triggered phase transition in GN copolymers was affected by the Bloom index of gelatin. In addition, the differences in protein secondary structure significantly influenced the degradation rates of GN carriers, which were highly correlated with drug release profiles. The increase in released pilocarpine concentration led to a high intracellular calcium level in rabbit ciliary smooth muscle cell cultures, indicating a beneficial pharmacological response to a drug. Irrespective of Bloom number of gelatin, all carrier materials exhibited excellent in vitro and in vivo biocompatibility with corneal endothelium. In a glaucomatous rabbit model, intracameral injections of pilocarpine-containing GN synthesized from gelatins with various Bloom numbers had different abilities to improve ocular hypertension and induce pupillary constriction, indicating distinct antiglaucoma efficacies due to in vivo drug release. It is concluded that the effects on pharmacological treatment using GN carriers for intracameral pilocarpine administration demonstrate a strong dependence on the Bloom number of gelatin.
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Affiliation(s)
- Shih-Feng Chou
- Institute of Biochemical and Biomedical Engineering, Chang Gung University, Taoyuan, 33302, Taiwan, ROC; Department of Bioengineering, University of Washington, Seattle, WA 98195-5061, USA
| | - Li-Jyuan Luo
- Department of Chemical and Materials Engineering, Chang Gung University, Taoyuan 33302, Taiwan, ROC
| | - Jui-Yang Lai
- Institute of Biochemical and Biomedical Engineering, Chang Gung University, Taoyuan, 33302, Taiwan, ROC; Biomedical Engineering Research Center, Chang Gung University, Taoyuan 33302, Taiwan, ROC; Molecular Medicine Research Center, Chang Gung University, Taoyuan 33302, Taiwan, ROC; Center for Tissue Engineering, Chang Gung Memorial Hospital, Taoyuan 33305, Taiwan, ROC; Department of Ophthalmology, Chang Gung Memorial Hospital, Taoyuan 33305, Taiwan, ROC.
| | - David Hui-Kang Ma
- Center for Tissue Engineering, Chang Gung Memorial Hospital, Taoyuan 33305, Taiwan, ROC; Department of Ophthalmology, Chang Gung Memorial Hospital, Taoyuan 33305, Taiwan, ROC; Department of Chinese Medicine, Chang Gung University, Taoyuan 33302, Taiwan, ROC
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23
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Relationships between surface roughness/stiffness of chitosan coatings and fabrication of corneal keratocyte spheroids: Effect of degree of deacetylation. Colloids Surf B Biointerfaces 2016; 142:105-113. [DOI: 10.1016/j.colsurfb.2016.02.051] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Revised: 01/30/2016] [Accepted: 02/24/2016] [Indexed: 12/17/2022]
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24
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Zhao S, Chen Y, Partlow BP, Golding AS, Tseng P, Coburn J, Applegate MB, Moreau JE, Omenetto FG, Kaplan DL. Bio-functionalized silk hydrogel microfluidic systems. Biomaterials 2016; 93:60-70. [PMID: 27077566 DOI: 10.1016/j.biomaterials.2016.03.041] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2015] [Revised: 03/05/2016] [Accepted: 03/28/2016] [Indexed: 12/16/2022]
Abstract
Bio-functionalized microfluidic systems were developed based on a silk protein hydrogel elastomeric materials. A facile multilayer fabrication method using gelatin sacrificial molding and layer-by-layer assembly was implemented to construct interconnected, three dimensional (3D) microchannel networks in silk hydrogels at 100 μm minimum feature resolution. Mechanically activated valves were implemented to demonstrate pneumatic control of microflow. The silk hydrogel microfluidics exhibit controllable mechanical properties, long-term stability in various environmental conditions, tunable in vitro and in vivo degradability in addition to optical transparency, providing unique features for cell/tissue-related applications than conventional polydimethylsiloxane (PDMS) and existing hydrogel-based microfluidic options. As demonstrated in the work here, the all aqueous-based fabrication process at ambient conditions enabled the incorporation of active biological substances in the bulk phase of these new silk microfluidic systems during device fabrication, including enzymes and living cells, which are able to interact with the fluid flow in the microchannels. These silk hydrogel-based microfluidic systems offer new opportunities in engineering active diagnostic devices, tissues and organs that could be integrated in vivo, and for on-chip cell sensing systems.
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Affiliation(s)
- Siwei Zhao
- Department of Biomedical Engineering, Tufts University, 4 Colby St. Medford, MA 02155, USA
| | - Ying Chen
- Department of Biomedical Engineering, Tufts University, 4 Colby St. Medford, MA 02155, USA
| | - Benjamin P Partlow
- Department of Biomedical Engineering, Tufts University, 4 Colby St. Medford, MA 02155, USA
| | - Anne S Golding
- Department of Biomedical Engineering, Tufts University, 4 Colby St. Medford, MA 02155, USA
| | - Peter Tseng
- Department of Biomedical Engineering, Tufts University, 4 Colby St. Medford, MA 02155, USA
| | - Jeannine Coburn
- Department of Biomedical Engineering, Tufts University, 4 Colby St. Medford, MA 02155, USA
| | - Matthew B Applegate
- Department of Biomedical Engineering, Tufts University, 4 Colby St. Medford, MA 02155, USA
| | - Jodie E Moreau
- Department of Biomedical Engineering, Tufts University, 4 Colby St. Medford, MA 02155, USA
| | - Fiorenzo G Omenetto
- Department of Biomedical Engineering, Tufts University, 4 Colby St. Medford, MA 02155, USA
| | - David L Kaplan
- Department of Biomedical Engineering, Tufts University, 4 Colby St. Medford, MA 02155, USA.
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25
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Lai JY. Hyaluronic acid concentration-mediated changes in structure and function of porous carriers for corneal endothelial cell sheet delivery. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 59:411-419. [PMID: 26652391 DOI: 10.1016/j.msec.2015.10.050] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2015] [Revised: 09/27/2015] [Accepted: 10/15/2015] [Indexed: 01/15/2023]
Abstract
In this study, the effects of hyaluronic acid (HA) concentrations (0.05-1.25wt.%) on the properties of porous carriers for corneal endothelial tissue engineering were investigated. The pore size and porosity gradually increased with decreasing solid content. However, at relatively low HA concentration (i.e., 0.05wt.%), the material samples contained small interior pores and a dense surface skin layer, probably due to no gas bubble effect on the stirring processing of porous microstructures of freeze-dried polysaccharide hydrogels. The carriers prepared from 0.25wt.% HA solution had the highest freezable water content and oxygen and glucose permeability among the samples evaluated. Results of cell viability assays and quantitative real-time reverse transcription polymerase chain reaction analyses showed that the HA concentration-related alteration of porous microstructure dictates the compatibility of biopolymer carriers with corneal endothelial cell (CEC) cultures. In vivo studies demonstrated that the CEC sheet/HA carrier construct implants are therapeutically efficacious in the reconstruction of endothelial scrape-wounded corneas. It is concluded that the polysaccharide concentration is the major factor for affecting the processing of carriers and their structure and function. Porous hydrogels prepared from 0.25wt.% HA solution are capable of delivering bioengineered CEC sheets to the posterior surface of cornea.
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Affiliation(s)
- Jui-Yang Lai
- Institute of Biochemical and Biomedical Engineering, Chang Gung University, Taoyuan, Taiwan 33302, Republic of China; Biomedical Engineering Research Center, Chang Gung University, Taoyuan, Taiwan 33302, Republic of China; Molecular Medicine Research Center, Chang Gung University, Taoyuan, Taiwan 33302, Republic of China; Center for Tissue Engineering, Chang Gung Memorial Hospital, Taoyuan, Taiwan 33305, Republic of China.
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26
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Kim EY, Tripathy N, Cho SA, Joo CK, Lee D, Khang G. Bioengineered neo-corneal endothelium using collagen type-I coated silk fibroin film. Colloids Surf B Biointerfaces 2015; 136:394-401. [PMID: 26433646 DOI: 10.1016/j.colsurfb.2015.09.041] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2015] [Revised: 09/21/2015] [Accepted: 09/22/2015] [Indexed: 01/06/2023]
Abstract
Corneal transplantation, a common surgical protocol for visual acuity improvement, is limited owing to shortage of high quality donor corneas and/or lack of accurate replication of structural and biochemical composition of native cornea in a scaffold. Construction of neo-corneas utilizing novel, biocompatible and biodegradable scaffold/film source, could possibly address such formidable challenges. Herein, we designed optically transparent, micro-structurally stable silk films surface-coated with collagen type-I (Col-I/SF) as an alternative scaffold source for bioengineering of neo-cornea. Morphological, structural characteristics and in vitro biological studies were performed using primary rabbit corneal endothelial cells (rCEnCs) as models. The Col-I/SF films demonstrated higher Ra (nm) values compared to the bare SF surfaces. In vitro biological studies showed a significant increment in initial cell attachment and proliferation of cultured rCEnCs on the Col-I/SF films with well-maintained characteristic polygonal shape of rCEnCs. Although any remarkable changes regarding the morphology, expression of ZO-1 and Na(+)/K(+)-ATPase were absent, however the cells were found to be capable of well-expressing their functional proteins which regulates functions of corneal endothelium. Collectively, these results strongly suggest Col-I/SF film for future corneal transplantation therapy.
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Affiliation(s)
- Eun Young Kim
- Department of BIN Fusion Technology, Department of PolymerNano Science & Polymer BIN Research Center, Chonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju 561-756, Republic of Korea
| | - Nirmalya Tripathy
- Department of BIN Fusion Technology, Department of PolymerNano Science & Polymer BIN Research Center, Chonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju 561-756, Republic of Korea
| | - Sun Ah Cho
- Department of BIN Fusion Technology, Department of PolymerNano Science & Polymer BIN Research Center, Chonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju 561-756, Republic of Korea
| | - Choun-Ki Joo
- Department of Ophthalmology and Visual Science, College of Medicine, The Catholic University of Korea, Gangnam St. Mary Hospital, 505 Banpo-dong, Seocho-gu, Seoul 137-701, Republic of Korea
| | - Dongwon Lee
- Department of BIN Fusion Technology, Department of PolymerNano Science & Polymer BIN Research Center, Chonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju 561-756, Republic of Korea
| | - Gilson Khang
- Department of BIN Fusion Technology, Department of PolymerNano Science & Polymer BIN Research Center, Chonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju 561-756, Republic of Korea.
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27
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Lai JY, Cheng HY, Ma DHK. Investigation of Overrun-Processed Porous Hyaluronic Acid Carriers in Corneal Endothelial Tissue Engineering. PLoS One 2015; 10:e0136067. [PMID: 26296087 PMCID: PMC4546624 DOI: 10.1371/journal.pone.0136067] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2015] [Accepted: 07/29/2015] [Indexed: 11/19/2022] Open
Abstract
Hyaluronic acid (HA) is a linear polysaccharide naturally found in the eye and therefore is one of the most promising biomaterials for corneal endothelial regenerative medicine. This study reports, for the first time, the development of overrun-processed porous HA hydrogels for corneal endothelial cell (CEC) sheet transplantation and tissue engineering applications. The hydrogel carriers were characterized to examine their structures and functions. Evaluations of carbodiimide cross-linked air-dried and freeze-dried HA samples were conducted simultaneously for comparison. The results indicated that during the fabrication of freeze-dried HA discs, a technique of introducing gas bubbles in the aqueous biopolymer solutions can be used to enlarge pore structure and prevent dense surface skin formation. Among all the groups studied, the overrun-processed porous HA carriers show the greatest biological stability, the highest freezable water content and glucose permeability, and the minimized adverse effects on ionic pump function of rabbit CECs. After transfer and attachment of bioengineered CEC sheets to the overrun-processed HA hydrogel carriers, the therapeutic efficacy of cell/biopolymer constructs was tested using a rabbit model with corneal endothelial dysfunction. Clinical observations including slit-lamp biomicroscopy, specular microscopy, and corneal thickness measurements showed that the construct implants can regenerate corneal endothelium and restore corneal transparency at 4 weeks postoperatively. Our findings suggest that cell sheet transplantation using overrun-processed porous HA hydrogels offers a new way to reconstruct the posterior corneal surface and improve endothelial tissue function.
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Affiliation(s)
- Jui-Yang Lai
- Institute of Biochemical and Biomedical Engineering, Chang Gung University, Taoyuan, Taiwan, 33302, Republic of China
- Biomedical Engineering Research Center, Chang Gung University, Taoyuan, Taiwan, 33302, Republic of China
- Molecular Medicine Research Center, Chang Gung University, Taoyuan, Taiwan, 33302, Republic of China
- * E-mail:
| | - Hsiao-Yun Cheng
- Molecular Medicine Research Center, Chang Gung University, Taoyuan, Taiwan, 33302, Republic of China
| | - David Hui-Kang Ma
- Limbal Stem Cell Laboratory, Department of Ophthalmology, Chang Gung Memorial Hospital, Taoyuan, Taiwan, 33305, Republic of China
- Department of Chinese Medicine, Chang Gung University, Taoyuan, Taiwan, 33302, Republic of China
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Lai JY. Influence of Pre-Freezing Temperature on the Corneal Endothelial Cytocompatibility and Cell Delivery Performance of Porous Hyaluronic Acid Hydrogel Carriers. Int J Mol Sci 2015; 16:18796-811. [PMID: 26270663 PMCID: PMC4581272 DOI: 10.3390/ijms160818796] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2015] [Revised: 07/21/2015] [Accepted: 07/31/2015] [Indexed: 11/26/2022] Open
Abstract
The development of porous hyaluronic acid (HA) hydrogels for corneal endothelial tissue engineering is attractive because they can be used as functional cell delivery carriers to help in the reconstruction of damaged areas. The purpose of this study was to investigate the corneal endothelial cytocompatibility and cell delivery performance of porous HA hydrogel biomaterials fabricated at different pre-freezing temperatures. As compared to their counterparts prepared at −80 °C, the HA samples fabricated at higher pre-freezing temperature (i.e., 0 °C) exhibited a larger pore size and higher porosity, thereby leading to lower resistance to glucose permeation. Live/dead assays and gene expression analyses showed that the restricted porous structure of HA carriers decreases the viability and ionic pump function of cultured corneal endothelial cells (CECs). The results also indicated that the porous hydrogel biomaterials fabricated at high pre-freezing temperature seem to be more compatible with rabbit CECs. In an animal model of corneal endothelial dysfunction, the wounded rabbit corneas receiving bioengineered CEC sheets and restricted porous-structured HA carriers demonstrated poor tissue reconstruction. The therapeutic efficacy of cell sheet transplants can be improved by using carrier materials prepared at high pre-freezing temperature. Our findings suggest that the cryogenic operation temperature-mediated pore microstructure of HA carriers plays an important role in corneal endothelial cytocompatibility and cell delivery performance.
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Affiliation(s)
- Jui-Yang Lai
- Institute of Biochemical and Biomedical Engineering, Chang Gung University, Taoyuan 33302, Taiwan.
- Biomedical Engineering Research Center, Chang Gung University, Taoyuan 33302, Taiwan.
- Molecular Medicine Research Center, Chang Gung University, Taoyuan 33302, Taiwan.
- Center for Tissue Engineering, Chang Gung Memorial Hospital, Taoyuan 33305, Taiwan .
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29
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Lai JY. Carbodiimide cross-linking of amniotic membranes in the presence of amino acid bridges. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 51:28-36. [DOI: 10.1016/j.msec.2015.02.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2014] [Revised: 01/02/2015] [Accepted: 02/09/2015] [Indexed: 10/24/2022]
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30
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Zhang S, Li J, Yin Z, Zhang X, Kundu SC, Lu S. Silk fibroin composite membranes for application in corneal regeneration. J Appl Polym Sci 2015. [DOI: 10.1002/app.42407] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Shanshan Zhang
- National Engineering Laboratory for Modern Silk, Soochow University; Suzhou China
| | - Jiaojiao Li
- National Engineering Laboratory for Modern Silk, Soochow University; Suzhou China
| | - Zhuping Yin
- National Engineering Laboratory for Modern Silk, Soochow University; Suzhou China
| | - Xiaofeng Zhang
- Department of Ophthalmology; Affiliated First Hospital of Soochow University; Suzhou China
| | - Subhas C. Kundu
- Department of Biotechnology; Indian Institute of Technology Kharagpur; West Bengal India
| | - Shenzhou Lu
- National Engineering Laboratory for Modern Silk, Soochow University; Suzhou China
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