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Zeinali A, Sirousazar M, Dastgerdi ZH, Kheiri F. Gelatin/Montmorillonite and Gelatin/Polyvinyl Alcohol/Montmorillonite Bionanocomposite Hydrogels: Microstructural, Swelling and Drying Properties. J MACROMOL SCI B 2020. [DOI: 10.1080/00222348.2019.1709714] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Amin Zeinali
- Faculty of Chemical Engineering, Urmia University of Technology, Urmia, Iran
| | - Mohammad Sirousazar
- Faculty of Chemical Engineering, Urmia University of Technology, Urmia, Iran
| | | | - Farshad Kheiri
- Faculty of Chemical Engineering, Urmia University of Technology, Urmia, Iran
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52
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Shafiee A, Ghadiri E, Kassis J, Williams D, Atala A. Energy Band Gap Investigation of Biomaterials: A Comprehensive Material Approach for Biocompatibility of Medical Electronic Devices. MICROMACHINES 2020; 11:E105. [PMID: 31963748 PMCID: PMC7019985 DOI: 10.3390/mi11010105] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 01/13/2020] [Accepted: 01/15/2020] [Indexed: 12/12/2022]
Abstract
Over the past ten years, tissue engineering has witnessed significant technological and scientific advancements. Progress in both stem cell science and additive manufacturing have established new horizons in research and are poised to bring improvements in healthcare closer to reality. However, more sophisticated indications such as the scale-up fabrication of biological structures (e.g., human tissues and organs) still require standardization. To that end, biocompatible electronics may be helpful in the biofabrication process. Here, we report the results of our systematic exploration to seek biocompatible/degradable functional electronic materials that could be used for electronic device fabrications. We investigated the electronic properties of various biomaterials in terms of energy diagrams, and the energy band gaps of such materials were obtained using optical absorption spectroscopy. The main component of an electronic device is manufactured with semiconductor materials (i.e., Eg between 1 to 2.5 eV). Most biomaterials showed an optical absorption edge greater than 2.5 eV. For example, fibrinogen, glycerol, and gelatin showed values of 3.54, 3.02, and 3.0 eV, respectively. Meanwhile, a few materials used in the tissue engineering field were found to be semiconductors, such as the phenol red in cell culture media (1.96 eV energy band gap). The data from this research may be used to fabricate biocompatible/degradable electronic devices for medical applications.
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Affiliation(s)
- Ashkan Shafiee
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston-Salem, NC 27101, USA
| | - Elham Ghadiri
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston-Salem, NC 27101, USA
- Department of Chemistry, Wake Forest University, Winston-Salem, NC 27109, USA
- Comprehensive Cancer Center, Wake Forest School of Medicine, Winston-Salem, NC 27101, USA
| | - Jareer Kassis
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston-Salem, NC 27101, USA
| | - David Williams
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston-Salem, NC 27101, USA
| | - Anthony Atala
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston-Salem, NC 27101, USA
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53
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Contessi Negrini N, Celikkin N, Tarsini P, Farè S, Święszkowski W. Three-dimensional printing of chemically crosslinked gelatin hydrogels for adipose tissue engineering. Biofabrication 2020; 12:025001. [DOI: 10.1088/1758-5090/ab56f9] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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54
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Baukum J, Pranjan J, Kaolaor A, Chuysinuan P, Suwantong O, Supaphol P. The potential use of cross-linked alginate/gelatin hydrogels containing silver nanoparticles for wound dressing applications. Polym Bull (Berl) 2019. [DOI: 10.1007/s00289-019-02873-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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55
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Ahmad-Fouad Basha M, Mostafa AM. UV-induced macromolecular and optical modifications in gelatin solid films with transition metal chlorides. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.01.054] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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56
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Trujillo-de Santiago G, Sharifi R, Yue K, Sani ES, Kashaf SS, Alvarez MM, Leijten J, Khademhosseini A, Dana R, Annabi N. Ocular adhesives: Design, chemistry, crosslinking mechanisms, and applications. Biomaterials 2019; 197:345-367. [PMID: 30690421 PMCID: PMC6687460 DOI: 10.1016/j.biomaterials.2019.01.011] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 12/16/2018] [Accepted: 01/05/2019] [Indexed: 12/12/2022]
Abstract
Closure of ocular wounds after an accident or surgery is typically performed by suturing, which is associated with numerous potential complications, including suture breakage, inflammation, secondary neovascularization, erosion to the surface and secondary infection, and astigmatism; for example, more than half of post-corneal transplant infections are due to suture related complications. Tissue adhesives provide promising substitutes for sutures in ophthalmic surgery. Ocular adhesives are not only intended to address the shortcomings of sutures, but also designed to be easy to use, and can potentially minimize post-operative complications. Herein, recent progress in the design, synthesis, and application of ocular adhesives, along with their advantages, limitations, and potential are discussed. This review covers two main classes of ocular adhesives: (1) synthetic adhesives based on cyanoacrylates, polyethylene glycol (PEG), and other synthetic polymers, and (2) adhesives based on naturally derived polymers, such as proteins and polysaccharides. In addition, different technologies to cover and protect ocular wounds such as contact bandage lenses, contact lenses coupled with novel technologies, and decellularized corneas are discussed. Continued advances in this area can help improve both patient satisfaction and clinical outcomes.
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Affiliation(s)
- Grissel Trujillo-de Santiago
- Harvard-Massachusetts Institute of Technology Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge 02139, MA, USA; Biomaterials Innovation Research Center, Division of Biomedical Engineering, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston 02139, MA, USA; Microsystems Technologies Laboratories, MIT, Cambridge, 02139, MA, USA; Centro de Biotecnología-FEMSA, Tecnológico de Monterrey, Monterrey, NL 64849, Mexico
| | - Roholah Sharifi
- Harvard-Massachusetts Institute of Technology Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge 02139, MA, USA; Biomaterials Innovation Research Center, Division of Biomedical Engineering, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston 02139, MA, USA
| | - Kan Yue
- Harvard-Massachusetts Institute of Technology Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge 02139, MA, USA; Biomaterials Innovation Research Center, Division of Biomedical Engineering, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston 02139, MA, USA
| | - Ehsan Shrizaei Sani
- Chemical and Biomolecular Engineering Department, University of California - Los Angeles, Los Angeles, CA 90095, USA
| | - Sara Saheb Kashaf
- Harvard-Massachusetts Institute of Technology Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge 02139, MA, USA; Biomaterials Innovation Research Center, Division of Biomedical Engineering, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston 02139, MA, USA
| | - Mario Moisés Alvarez
- Harvard-Massachusetts Institute of Technology Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge 02139, MA, USA; Biomaterials Innovation Research Center, Division of Biomedical Engineering, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston 02139, MA, USA; Microsystems Technologies Laboratories, MIT, Cambridge, 02139, MA, USA; Centro de Biotecnología-FEMSA, Tecnológico de Monterrey, Monterrey, NL 64849, Mexico
| | - Jeroen Leijten
- Harvard-Massachusetts Institute of Technology Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge 02139, MA, USA; Biomaterials Innovation Research Center, Division of Biomedical Engineering, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston 02139, MA, USA; Department of Developmental BioEngineering, Faculty of Science and Technology, Technical Medicine, University of Twente, Drienerlolaan 5, 7522 NB, Enschede, The Netherlands
| | - Ali Khademhosseini
- Harvard-Massachusetts Institute of Technology Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge 02139, MA, USA; Biomaterials Innovation Research Center, Division of Biomedical Engineering, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston 02139, MA, USA; Chemical and Biomolecular Engineering Department, University of California - Los Angeles, Los Angeles, CA 90095, USA; Department of Bioengineering, University of California - Los Angeles, Los Angeles, CA 90095, USA; Center for Minimally Invasive Therapeutics (C-MIT), California NanoSystems Institute (CNSI), University of California - Los Angeles, Los Angeles, CA 90095, USA; Department of Radiology, David Geffen School of Medicine, University of California - Los Angeles, 10833 Le Conte Ave, Los Angeles, CA 90095, USA
| | - Reza Dana
- Massachusetts Eye and Ear Infirmary and Schepens Eye Research Institute, Department of Ophthalmology, Harvard Medical School, Boston, MA 02114, USA
| | - Nasim Annabi
- Harvard-Massachusetts Institute of Technology Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge 02139, MA, USA; Biomaterials Innovation Research Center, Division of Biomedical Engineering, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston 02139, MA, USA; Chemical and Biomolecular Engineering Department, University of California - Los Angeles, Los Angeles, CA 90095, USA; Center for Minimally Invasive Therapeutics (C-MIT), California NanoSystems Institute (CNSI), University of California - Los Angeles, Los Angeles, CA 90095, USA.
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57
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AnilKumar S, Allen SC, Tasnim N, Akter T, Park S, Kumar A, Chattopadhyay M, Ito Y, Suggs LJ, Joddar B. The applicability of furfuryl-gelatin as a novel bioink for tissue engineering applications. J Biomed Mater Res B Appl Biomater 2019; 107:314-323. [PMID: 29656592 PMCID: PMC6188846 DOI: 10.1002/jbm.b.34123] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Revised: 02/22/2018] [Accepted: 03/14/2018] [Indexed: 01/21/2023]
Abstract
Three-dimensional bioprinting is an innovative technique in tissue engineering, to create layer-by-layer structures, required for mimicking body tissues. However, synthetic bioinks do not generally possess high printability and biocompatibility at the same time. So, there is an urgent need for naturally derived bioinks that can exhibit such optimized properties. We used furfuryl-gelatin as a novel, visible-light crosslinkable bioink for fabricating cell-laden structures with high viability. Hyaluronic acid was added as a viscosity enhancer and either Rose Bengal or Riboflavin was used as a visible-light crosslinker. Crosslinking was done by exposing the printed structure for 2.5 min to visible light and confirmed using Fourier transform infrared spectroscopy and rheometry. Scanning electron microscopy revealed a highly porous networked structure. Three different cell types were successfully bioprinted within these constructs. Mouse mesenchymal stem cells printed within monolayer and bilayer sheets showed viability, network formation and proliferation (∼5.33 times) within 72 h of culture. C2C12 and STO cells were used to print a double layered structure, which showed evidence of the viability of both cells and heterocellular clusters within the construct. This furfuryl-gelatin based bioink can be used for tissue engineering of complex tissues and help in understanding how cellular crosstalk happens in vivo during normal or diseased pathology. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 107B: 314-323, 2019.
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Affiliation(s)
- Shweta AnilKumar
- Inspired Materials & Stem-Cell Based Tissue Engineering Laboratory (IMSTEL), Department of Metallurgical, Materials and Biomedical Engineering, University of Texas at El Paso, El Paso, Texas, 79968
| | - Shane C Allen
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas, 78712
| | - Nishat Tasnim
- Inspired Materials & Stem-Cell Based Tissue Engineering Laboratory (IMSTEL), Department of Metallurgical, Materials and Biomedical Engineering, University of Texas at El Paso, El Paso, Texas, 79968
| | - Tahmina Akter
- Department of Chemistry, University of Texas at El Paso, El Paso, Texas, 79968
| | - Shinhye Park
- Nano Medical Engineering Laboratory, RIKEN, Wako, Saitama, Japan
| | - Alok Kumar
- Inspired Materials & Stem-Cell Based Tissue Engineering Laboratory (IMSTEL), Department of Metallurgical, Materials and Biomedical Engineering, University of Texas at El Paso, El Paso, Texas, 79968
| | - Munmun Chattopadhyay
- Department of Biomedical Sciences, Center of Emphasis in Diabetes and Metabolism, Texas Tech University Health Sciences Center, El Paso, Texas, 79905
| | - Yoshihiro Ito
- Nano Medical Engineering Laboratory, RIKEN, Wako, Saitama, Japan
- Emergent Bioengineering Materials Research Team, RIKEN Center for Emergent Matter Science, Wako, Saitama, Japan
| | - Laura J Suggs
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas, 78712
| | - Binata Joddar
- Inspired Materials & Stem-Cell Based Tissue Engineering Laboratory (IMSTEL), Department of Metallurgical, Materials and Biomedical Engineering, University of Texas at El Paso, El Paso, Texas, 79968
- Nano Medical Engineering Laboratory, RIKEN, Wako, Saitama, Japan
- Border Biomedical Research Center (BBRC), University of Texas at El Paso, El Paso, Texas, 79968
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58
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Way DV, Nele M, Pinto JC. Preparation of gelatin beads treated with glucose and glycerol. POLIMEROS 2018. [DOI: 10.1590/0104-1428.04317] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
| | - Márcio Nele
- Universidade Federal do Rio de Janeiro, Brasil
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59
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Mishra V, Bansal KK, Verma A, Yadav N, Thakur S, Sudhakar K, Rosenholm JM. Solid Lipid Nanoparticles: Emerging Colloidal Nano Drug Delivery Systems. Pharmaceutics 2018; 10:E191. [PMID: 30340327 PMCID: PMC6321253 DOI: 10.3390/pharmaceutics10040191] [Citation(s) in RCA: 264] [Impact Index Per Article: 44.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2018] [Revised: 09/23/2018] [Accepted: 09/26/2018] [Indexed: 11/16/2022] Open
Abstract
Solid lipid nanoparticles (SLNs) are nanocarriers developed as substitute colloidal drug delivery systems parallel to liposomes, lipid emulsions, polymeric nanoparticles, and so forth. Owing to their unique size dependent properties and ability to incorporate drugs, SLNs present an opportunity to build up new therapeutic prototypes for drug delivery and targeting. SLNs hold great potential for attaining the goal of targeted and controlled drug delivery, which currently draws the interest of researchers worldwide. The present review sheds light on different aspects of SLNs including fabrication and characterization techniques, formulation variables, routes of administration, surface modifications, toxicity, and biomedical applications.
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Affiliation(s)
- Vijay Mishra
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, Punjab 144411, India.
| | - Kuldeep K Bansal
- Pharmaceutical Sciences Laboratory, Faculty of Science and Engineering, Abo Akademi University, 20520 Turku, Finland.
| | - Asit Verma
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, Punjab 144411, India.
| | - Nishika Yadav
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, Punjab 144411, India.
| | - Sourav Thakur
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, Punjab 144411, India.
| | - Kalvatala Sudhakar
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, Punjab 144411, India.
| | - Jessica M Rosenholm
- Pharmaceutical Sciences Laboratory, Faculty of Science and Engineering, Abo Akademi University, 20520 Turku, Finland.
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60
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Bakravi A, Ahamadian Y, Hashemi H, Namazi H. Synthesis of gelatin-based biodegradable hydrogel nanocomposite and their application as drug delivery agent. ADVANCES IN POLYMER TECHNOLOGY 2018. [DOI: 10.1002/adv.21938] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Asghar Bakravi
- Research Laboratory of Dendrimers and Nanopolymers; Faculty of Chemistry; University of Tabriz; Tabriz Iran
| | - Yashar Ahamadian
- Research Laboratory of Dendrimers and Nanopolymers; Faculty of Chemistry; University of Tabriz; Tabriz Iran
| | - Hamed Hashemi
- Research Laboratory of Dendrimers and Nanopolymers; Faculty of Chemistry; University of Tabriz; Tabriz Iran
| | - Hassan Namazi
- Research Laboratory of Dendrimers and Nanopolymers; Faculty of Chemistry; University of Tabriz; Tabriz Iran
- Research Center for Pharmaceutical Nanotechnology (RCPN); Tabriz University of Medical Science; Tabriz Iran
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61
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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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62
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Wang K, Han Z. Injectable hydrogels for ophthalmic applications. J Control Release 2017; 268:212-224. [PMID: 29061512 PMCID: PMC5722685 DOI: 10.1016/j.jconrel.2017.10.031] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Revised: 10/18/2017] [Accepted: 10/19/2017] [Indexed: 12/28/2022]
Abstract
The demand for effective eye therapies is driving the development of injectable hydrogels as new medical devices for controlled delivery and filling purposes. This article introduces the properties of injectable hydrogels and summarizes their versatile application in the treatment of ophthalmic diseases, including age-related macular degeneration, cataracts, diabetic retinopathy, glaucoma, and intraocular cancers. A number of injectable hydrogels are approved by FDA as surgery sealants, tissue adhesives, and are now being investigated as a vitreous humor substitute. Research on hydrogels for drug, factor, nanoparticle, and stem cell delivery is still under pre-clinical investigation or in clinical trials. Although substantial progress has been achieved using injectable hydrogels, some challenging issues must still be overcome before they can be effectively used in medical practice.
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Affiliation(s)
- Kai Wang
- Department of Ophthalmology, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Zongchao Han
- Department of Ophthalmology, University of North Carolina, Chapel Hill, NC 27599, USA; Carolina Institute for Nano Medicine, University of North Carolina, Chapel Hill, NC 27599, USA; Division of Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599, USA.
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63
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Moulisová V, Poveda-Reyes S, Sanmartín-Masiá E, Quintanilla-Sierra L, Salmerón-Sánchez M, Gallego Ferrer G. Hybrid Protein-Glycosaminoglycan Hydrogels Promote Chondrogenic Stem Cell Differentiation. ACS OMEGA 2017; 2:7609-7620. [PMID: 29214232 PMCID: PMC5709783 DOI: 10.1021/acsomega.7b01303] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Accepted: 10/13/2017] [Indexed: 05/14/2023]
Abstract
Gelatin-hyaluronic acid (Gel-HA) hybrid hydrogels have been proposed as matrices for tissue engineering because of their ability to mimic the architecture of the extracellular matrix. Our aim was to explore whether tyramine conjugates of Gel and HA, producing injectable hydrogels, are able to induce a particular phenotype of encapsulated human mesenchymal stem cells without the need for growth factors. While pure Gel allowed good cell adhesion without remarkable differentiation and pure HA triggered chondrogenic differentiation without cell spreading, the hybrids, especially those rich in HA, promoted chondrogenic differentiation as well as cell proliferation and adhesion. Secretion of chondrogenic markers such as aggrecan, SOX-9, collagen type II, and glycosaminoglycans was observed, whereas osteogenic, myogenic, and adipogenic markers (RUNX2, sarcomeric myosin, and lipoproteinlipase, respectively) were not present after 2 weeks in the growth medium. The most promising matrix for chondrogenesis seems to be a mixture containing 70% HA and 30% Gel as it is the material with the best mechanical properties from all compositions tested here, and at the same time, it provides an environment suitable for balanced cell adhesion and chondrogenic differentiation. Thus, it represents a system that has a high potential to be used as the injectable material for cartilage regeneration therapies.
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Affiliation(s)
- Vladimíra Moulisová
- Division
of Biomedical Engineering, School of Engineering, University of Glasgow, Rankine Bld, Oakfield Avenue G12 8LT, Glasgow, U.K.
| | - Sara Poveda-Reyes
- Centre
for Biomaterials and Tissue Engineering (CBIT), Universitat Politècnica de València, Camino de Vera s/n. 46022 Valencia, Spain
| | - Esther Sanmartín-Masiá
- Centre
for Biomaterials and Tissue Engineering (CBIT), Universitat Politècnica de València, Camino de Vera s/n. 46022 Valencia, Spain
| | - Luis Quintanilla-Sierra
- BIOFORGE
Group, Centro de Investigación Científica y Desarrollo
Tecnológico, Universidad de Valladolid, Campus Miguel Delibes 47011 Valladolid, Spain
- Biomedical
Research Networking Center in Bioengineering, Biomaterials and Nanomedicine
(CIBER-BBN), Instituto de Salud Carlos III, C/Monforte de Lemos 3-5, pabellón
11, planta 0, 28029 Madrid, Spain
| | - Manuel Salmerón-Sánchez
- Division
of Biomedical Engineering, School of Engineering, University of Glasgow, Rankine Bld, Oakfield Avenue G12 8LT, Glasgow, U.K.
| | - Gloria Gallego Ferrer
- Centre
for Biomaterials and Tissue Engineering (CBIT), Universitat Politècnica de València, Camino de Vera s/n. 46022 Valencia, Spain
- Biomedical
Research Networking Center in Bioengineering, Biomaterials and Nanomedicine
(CIBER-BBN), Instituto de Salud Carlos III, C/Monforte de Lemos 3-5, pabellón
11, planta 0, 28029 Madrid, Spain
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64
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Electrospinning of gelatin with tunable fiber morphology from round to flat/ribbon. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 80:371-378. [DOI: 10.1016/j.msec.2017.06.001] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Revised: 05/05/2017] [Accepted: 06/06/2017] [Indexed: 11/21/2022]
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65
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De France KJ, Yager KG, Chan KJW, Corbett B, Cranston ED, Hoare T. Injectable Anisotropic Nanocomposite Hydrogels Direct in Situ Growth and Alignment of Myotubes. NANO LETTERS 2017; 17:6487-6495. [PMID: 28956933 DOI: 10.1021/acs.nanolett.7b03600] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
While injectable in situ cross-linking hydrogels have attracted increasing attention as minimally invasive tissue scaffolds and controlled delivery systems, their inherently disorganized and isotropic network structure limits their utility in engineering oriented biological tissues. Traditional methods to prepare anisotropic hydrogels are not easily translatable to injectable systems given the need for external equipment to direct anisotropic gel fabrication and/or the required use of temperatures or solvents incompatible with biological systems. Herein, we report a new class of injectable nanocomposite hydrogels based on hydrazone cross-linked poly(oligoethylene glycol methacrylate) and magnetically aligned cellulose nanocrystals (CNCs) capable of encapsulating skeletal muscle myoblasts and promoting their differentiation into highly oriented myotubes in situ. CNC alignment occurs on the same time scale as network gelation and remains fixed after the removal of the magnetic field, enabling concurrent CNC orientation and hydrogel injection. The aligned hydrogels show mechanical and swelling profiles that can be rationally modulated by the degree of CNC alignment and can direct myotube alignment both in two- and three-dimensions following coinjection of the myoblasts with the gel precursor components. As such, these hydrogels represent a critical advancement in anisotropic biomimetic scaffolds that can be generated noninvasively in vivo following simple injection.
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Affiliation(s)
- Kevin J De France
- Department of Chemical Engineering, McMaster University , 1280 Main Street West, Hamilton, Ontario L8S 4L8, Canada
| | - Kevin G Yager
- Center for Functional Nanomaterials, Brookhaven National Laboratory , Upton, New York 11973, United States
| | - Katelyn J W Chan
- Department of Chemical Engineering, McMaster University , 1280 Main Street West, Hamilton, Ontario L8S 4L8, Canada
| | - Brandon Corbett
- Department of Chemical Engineering, McMaster University , 1280 Main Street West, Hamilton, Ontario L8S 4L8, Canada
| | - Emily D Cranston
- Department of Chemical Engineering, McMaster University , 1280 Main Street West, Hamilton, Ontario L8S 4L8, Canada
| | - Todd Hoare
- Department of Chemical Engineering, McMaster University , 1280 Main Street West, Hamilton, Ontario L8S 4L8, Canada
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66
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Horst MF, Ninago MD, Lassalle V. Magnetically responsive gels based on crosslinked gelatin: An overview on the synthesis, properties, and their potential in water remediation. INT J POLYM MATER PO 2017. [DOI: 10.1080/00914037.2017.1362640] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Maria Fernanda Horst
- INQUISUR-CONICET-UNS, Departamento de Química, Bahía Blanca, Buenos Aires, Argentina
| | - Mario Daniel Ninago
- PLAPIQUI-CONICET-UNS, Departamento de Ingeniería Química, Bahía Blanca, Buenos Aires, Argentina
| | - Verónica Lassalle
- INQUISUR-CONICET-UNS, Departamento de Química, Bahía Blanca, Buenos Aires, Argentina
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Qiao X, Peng X, Qiao J, Jiang Z, Han B, Yang C, Liu W. Evaluation of a photocrosslinkable hydroxyethyl chitosan hydrogel as a potential drug release system for glaucoma surgery. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2017; 28:149. [PMID: 28831622 DOI: 10.1007/s10856-017-5954-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Accepted: 08/01/2017] [Indexed: 06/07/2023]
Abstract
Hydroxyethyl chitosan (HECTS) is a critical derivative of chitosan that has been widely used as biomedical materials due to great water-solubility and excellent biocompatibility. Here, photosensitive hydroxyethyl chitosan was synthesized by introducing azide group on NH2 of HECTS (HECTS-AZ), afterwards FTIR and 1H NMR spectra were detected to confirm the formation of HECTS-AZ. The solution of HECTS-AZ can achieve a sol-gel transition through UV irradiation for 30 s. The evaluation of biocompability and biodegradability in vivo was conducted in rats, visual and pathological examinations exhibited the HECTS-AZ has excellent biocompability and degradation time of the hydrogel is more than 14 weeks. Furthermore, HECTS-AZ hydrogel as an ocular drug delivery system loading heparin was prepared to implant under sclera of rabbit after glaucoma filtration surgery (GFS). The experimental results demonstrated the heparin loaded hydrogel can effectively maintain filtration bleb and lowing intraocular pressure (IOP) after GFS for prolonged time. Besides, obvious inflammatory reactions and side effects have not been observed in ocular during the experimental period. In conclusion, the HECTS-AZ hydrogel is a potential drug delivery device for the treatment of glaucoma and other ocular diseases.
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Affiliation(s)
- Xuesong Qiao
- College of Marine Life Sciences, Ocean University of China, Shandong, Qingdao, PR China
| | - Xiaoting Peng
- College of Marine Life Sciences, Ocean University of China, Shandong, Qingdao, PR China
| | - Jing Qiao
- College of Marine Life Sciences, Ocean University of China, Shandong, Qingdao, PR China
| | - Zhiwen Jiang
- College of Marine Life Sciences, Ocean University of China, Shandong, Qingdao, PR China
| | - Baoqin Han
- College of Marine Life Sciences, Ocean University of China, Shandong, Qingdao, PR China.
| | - Chaozhong Yang
- Affiliated Hospital of Heze Medical College, Heze, Shandong, PR China
| | - Wanshun Liu
- College of Marine Life Sciences, Ocean University of China, Shandong, Qingdao, PR China
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68
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Way DV, Nele M, Pinto JC. Production of doxycycline-loaded gelatin microspheres through thermal treatment in inverse suspensions. POLYM ENG SCI 2017. [DOI: 10.1002/pen.24628] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Débora Vieira Way
- Programa de Engenharia Química/COPPE - Universidade Federal do Rio de Janeiro; Cidade Universitária; CP:68502, Rio de Janeiro RJ 21941-972 Brazil
| | - Márcio Nele
- Departamento de Engenharia Química/Escola de Química - Universidade Federal do Rio de Janeiro; Cidade Universitária; CP:68502, Rio de Janeiro RJ 21941-909 Brazil
| | - José Carlos Pinto
- Programa de Engenharia Química/COPPE - Universidade Federal do Rio de Janeiro; Cidade Universitária; CP:68502, Rio de Janeiro RJ 21941-972 Brazil
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69
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Cheng H, Yue K, Kazemzadeh-Narbat M, Liu Y, Khalilpour A, Li B, Zhang YS, Annabi N, Khademhosseini A. Mussel-Inspired Multifunctional Hydrogel Coating for Prevention of Infections and Enhanced Osteogenesis. ACS APPLIED MATERIALS & INTERFACES 2017; 9:11428-11439. [PMID: 28140564 PMCID: PMC5844698 DOI: 10.1021/acsami.6b16779] [Citation(s) in RCA: 146] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Prevention of postsurgery infection and promotion of biointegration are the key factors to achieve long-term success in orthopedic implants. Localized delivery of antibiotics and bioactive molecules by the implant surface serves as a promising approach toward these goals. However, previously reported methods for surface functionalization of the titanium alloy implants to load bioactive ingredients suffer from time-consuming complex processes and lack of long-term stability. Here, we present the design and characterization of an adhesive, osteoconductive, and antimicrobial hydrogel coating for Ti implants. To form this multifunctional hydrogel, a photo-cross-linkable gelatin-based hydrogel was modified with catechol motifs to enhance adhesion to Ti surfaces and thus promote coating stability. To induce antimicrobial and osteoconductive properties, a short cationic antimicrobial peptide (AMP) and synthetic silicate nanoparticles (SNs) were introduced into the hydrogel formulation. The controlled release of AMP loaded in the hydrogel demonstrated excellent antimicrobial activity to prevent biofilm formation. Moreover, the addition of SNs to the hydrogel formulation enhanced osteogenesis when cultured with human mesenchymal stem cells, suggesting the potential to promote new bone formation in the surrounding tissues. Considering the unique features of our implant hydrogel coating, including high adhesion, antimicrobial capability, and the ability to induce osteogenesis, it is believed that our design provides a useful alternative method for bone implant surface modification and functionalization.
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Affiliation(s)
- Hao Cheng
- Biomaterials Innovation Research Center, Division of Biomedical Engineering, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Cambridge, Massachusetts 02139, United States
- Harvard–MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- Othopeadic Department, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Kan Yue
- Biomaterials Innovation Research Center, Division of Biomedical Engineering, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Cambridge, Massachusetts 02139, United States
- Harvard–MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Mehdi Kazemzadeh-Narbat
- Biomaterials Innovation Research Center, Division of Biomedical Engineering, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Cambridge, Massachusetts 02139, United States
- Harvard–MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Yanhui Liu
- Biomaterials Innovation Research Center, Division of Biomedical Engineering, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Cambridge, Massachusetts 02139, United States
- Harvard–MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- College of Textiles, Donghua University, Shanghai, 201620, China
| | - Akbar Khalilpour
- Biomaterials Innovation Research Center, Division of Biomedical Engineering, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Cambridge, Massachusetts 02139, United States
- Harvard–MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Bingyun Li
- Department of Orthopaedics, School of Medicine, West Virginia University, Morgantown, West Virginia 26506, United States
| | - Yu Shrike Zhang
- Biomaterials Innovation Research Center, Division of Biomedical Engineering, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Cambridge, Massachusetts 02139, United States
- Harvard–MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Nasim Annabi
- Biomaterials Innovation Research Center, Division of Biomedical Engineering, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Cambridge, Massachusetts 02139, United States
- Harvard–MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- Department of Chemical Engineering, Northeastern University, Boston, Massachusetts 02115-5000, United States
| | - Ali Khademhosseini
- Biomaterials Innovation Research Center, Division of Biomedical Engineering, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Cambridge, Massachusetts 02139, United States
- Harvard–MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- Department of Bioindustrial Technologies, College of Animal Bioscience and Technology, Konkuk University, Seoul, 143-701, the Republic of Korea
- Department of Physics, King Abdulaziz University, Jeddah 21569, Saudi Arabia
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70
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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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Chou SF, Luo LJ, Lai JY, Ma DHK. Role of solvent-mediated carbodiimide cross-linking in fabrication of electrospun gelatin nanofibrous membranes as ophthalmic biomaterials. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 71:1145-1155. [PMID: 27987671 DOI: 10.1016/j.msec.2016.11.105] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2016] [Revised: 11/18/2016] [Accepted: 11/24/2016] [Indexed: 02/04/2023]
Abstract
Due to their ability to mimic the structure of extracellular matrix, electrospun gelatin nanofibers are promising cell scaffolding materials for tissue engineering applications. However, the hydrophilic gelatin molecules usually need stabilization before use in aqueous physiological environment. Considering that biomaterials cross-linked via film immersion technique may have a more homogeneous cross-linked structure than vapor phase cross-linking, this work aims to investigate the chemical modification of electrospun gelatin nanofibrous membranes by liquid phase carbodiimide in the presence of ethanol/water co-solvents with varying ethanol concentrations ranging from 80 to 99.5vol%. The results of characterization showed that increasing water content in the binary reaction solvent system increases the extent of cross-linking of gelatin nanofibers, but simultaneously promotes the effect of biopolymer swelling and distortion in fiber mat structure. As compared to non-cross-linked counterparts, carbodiimide treated gelatin nanofibrous mats exhibited better thermal and biological stability where the shrinkage temperature and resistance to enzymatic degradation varied in response to ethanol/water solvent composition-mediated generation of cross-links. Irrespective of their cross-linking density, all studied membrane samples did not induce any responses in ocular epithelial cell cultures derived from cornea, lens, and retina. Unlike many other cross-linking agents and/or methods (e.g., excessive vapor phase cross-linking) that may pose a risk of toxicity, our study demonstrated that these nanofibrous materials are well tolerated by anterior segment tissues. These findings also indicate the safety of using ethanol/water co-solvents for chemical cross-linking of gelatin to engineer nanofibrous materials with negligible biological effects. In summary, the present results suggest the importance of solvent-mediated carbodiimide cross-linking in modulating structure-property relationship without compromising in vitro and in vivo biocompatibility of electrospun gelatin nanofibers for future ophthalmic applications.
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Affiliation(s)
- Shih-Feng Chou
- Department of Mechanical Engineering, University of Texas at Tyler, Tyler, TX 75799, 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; 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 Materials Engineering, Ming Chi University of Technology, New Taipei City 24301, 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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72
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Preclinical safety of solid lipid nanoparticles and nanostructured lipid carriers: Current evidence from in vitro and in vivo evaluation. Eur J Pharm Biopharm 2016; 108:235-252. [PMID: 27519829 DOI: 10.1016/j.ejpb.2016.08.001] [Citation(s) in RCA: 169] [Impact Index Per Article: 21.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2016] [Revised: 07/16/2016] [Accepted: 08/01/2016] [Indexed: 01/08/2023]
Abstract
Solid lipid nanoparticles (SLN) and nanostructured lipid carriers (NLC) were designed as exceptionally safe colloidal carriers for the delivery of poorly soluble drugs. SLN/NLC have the particularity of being composed of excipientsalready approved for use in medicines for human use, which offers a great advantage over any other nanoparticulate system developed from novel materials. Despite this fact, any use of excipients in new route of administration or in new dosage form requires evidence of safety. After 25 years of research on SLN and NLC, enough evidence on their preclinical safety has been published. In the present work, published data on in vitro and in vivo compatibility of SLN/NLC have been surveyed, in order to provide evidence of high biocompatibility distinguished by intended administration route. We also identified critical factors and possible weak points in SLN/NLC formulations, such as the effect of surfactants on the cell viability in vitro, which should be considered for further development.
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73
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Zhang J, Mujeeb A, Feng J, Li Y, Du Y, Lin J, Ge Z. Physically entrapped gelatin in polyethylene glycol scaffolds for three-dimensional chondrocyte culture. J BIOACT COMPAT POL 2016. [DOI: 10.1177/0883911516633893] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Developing tissue-engineered constructs for clinical use must satisfy the fundamental biologic parameters of biocompatibility, cell adhesiveness, and biodegradability. Physical entrapment of bioactive agents into synthetic polymers, as three-dimensional scaffolds, holds great promise for cell culture applications. Here, in an attempt to elucidate the effects of physical interlocking of natural and synthetic gel networks on cell responses within three-dimensional microenvironments, gelatin (of different concentrations) was physically incorporated into macroporous polyethylene glycol (PEG) hydrogels to fabricate PEG-GEL1 (10:1, PEG:gelatin) and PEG-GEL5 (10:5, PEG:gelatin). The effect of the physically entrapped gelatin on primary chondrocytes was investigated in relation to cell distribution, morphology and viability, proliferation, gene expression, and extracellular matrix accumulation in vitro. Our findings have shown successful incorporation of two different concentrations of gelatin into polyethylene glycol macroporous hydrogels through physical mixing. These physical blends not only enhanced chondrocyte adhesion and proliferation but also boosted gene expression of collagen II and aggrecan after 14 days in culture. Although results demonstrated that gelatin levels dropped sharply in PEG-GEL1 and PEG-GEL5 in the first 7 days, however evidently, after days 14 and 21 gelatin levels in both groups remained substantially unchanged and in turn enhanced glycosaminoglycan formation in vitro. Thus, the modification of polyethylene-glycol-based scaffolds with physically entrapped gelatin may be sufficient for dictating three-dimensional microenvironments for chondrocyte cultures.
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Affiliation(s)
- Jingjing Zhang
- Department of Biomedical Engineering, College of Engineering, Peking University, Beijing, People’s Republic of China
| | - Ayeesha Mujeeb
- Department of Biomedical Engineering, College of Engineering, Peking University, Beijing, People’s Republic of China
| | - Junxia Feng
- Department of Biomedical Engineering, College of Engineering, Peking University, Beijing, People’s Republic of China
| | - Yijiang Li
- Department of Biomedical Engineering, College of Engineering, Peking University, Beijing, People’s Republic of China
| | - Yanan Du
- Department of Biomedical Engineering, Tsinghua University, Beijing, People’s Republic of China
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, People’s Republic of China
| | - Jianhao Lin
- Arthritis Clinic & Research Center, Peking University People’s Hospital, Beijing, People’s Republic of China
| | - Zigang Ge
- Department of Biomedical Engineering, College of Engineering, Peking University, Beijing, People’s Republic of China
- Arthritis Clinic & Research Center, Peking University People’s Hospital, Beijing, People’s Republic of China
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74
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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: 27] [Impact Index Per Article: 3.4] [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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75
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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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76
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Poveda-Reyes S, Moulisova V, Sanmartín-Masiá E, Quintanilla-Sierra L, Salmerón-Sánchez M, Ferrer GG. Gelatin-Hyaluronic Acid Hydrogels with Tuned Stiffness to Counterbalance Cellular Forces and Promote Cell Differentiation. Macromol Biosci 2016; 16:1311-24. [DOI: 10.1002/mabi.201500469] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Revised: 03/29/2016] [Indexed: 12/30/2022]
Affiliation(s)
- Sara Poveda-Reyes
- Center for Biomaterials and Tissue Engineering (CBIT); Universitat Politècnica de València; Valencia 46022
| | - Vladimira Moulisova
- Division of Biomedical Engineering; School of Engineering; University of Glasgow; Glasgow G12 8QQ UK
| | - Esther Sanmartín-Masiá
- Center for Biomaterials and Tissue Engineering (CBIT); Universitat Politècnica de València; Valencia 46022
| | - Luis Quintanilla-Sierra
- BIOFORGE Group; Centro de Investigación Científica y Desarrollo Tecnológico; Campus de Miguel Delibes; Universidad de Valladolid; Valladolid 47011 Spain
| | - Manuel Salmerón-Sánchez
- Division of Biomedical Engineering; School of Engineering; University of Glasgow; Glasgow G12 8QQ UK
| | - Gloria Gallego Ferrer
- Center for Biomaterials and Tissue Engineering (CBIT); Universitat Politècnica de València; Valencia 46022
- Biomedical Research Networking Center in Bioengineering; Biomaterials and Nanomedicine (CIBER-BBN); Valencia 46022 Spain
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77
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Bellich B, D'Agostino I, Semeraro S, Gamini A, Cesàro A. "The Good, the Bad and the Ugly" of Chitosans. Mar Drugs 2016; 14:E99. [PMID: 27196916 PMCID: PMC4882573 DOI: 10.3390/md14050099] [Citation(s) in RCA: 203] [Impact Index Per Article: 25.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Revised: 05/04/2016] [Accepted: 05/09/2016] [Indexed: 12/15/2022] Open
Abstract
The objective of this paper is to emphasize the fact that while consistent interest has been paid to the industrial use of chitosan, minor attention has been devoted to spread the knowledge of a good characterization of its physico-chemical properties. Therefore, the paper attempts to critically comment on the conflicting experimental results, highlighting the facts, the myths and the controversies. The goal is to indicate how to take advantage of chitosan versatility, to learn how to manage its variability and show how to properly tackle some unexpected undesirable features. In the sections of the paper various issues that relate chitosan properties to some basic features and to advanced solutions and applications are presented. The introduction outlines some historical pioneering works, where the chemistry of chitosan was originally explored. Thereafter, particular reference is made to analytical purity, characterization and chain modifications. The macromolecular characterization is mostly related to molecular weight and to degree of acetylation, but also refers to the conformational and rheological properties and solution stability. Then, the antimicrobial activity of chitosan in relation with its solubility is reviewed. A section is dedicated to the formulation of chitosan biomaterials, from gel to nanobeads, exploring their innovative application as active carrier nanoparticles. Finally, the toxicity issue of chitosan as a polymer and as a constructed nanomaterial is briefly commented in the conclusions.
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Affiliation(s)
- Barbara Bellich
- Laboratory of Physical and Macromolecular Chemistry, Department of Chemical and Pharmaceutical Sciences, University of Trieste, Via Giorgieri 1, 34127 Trieste, Italy.
| | - Ilenia D'Agostino
- Department of Life Sciences, University of Trieste, Via Giorgieri 1, 34127 Trieste, Italy. ilenia.d'
| | - Sabrina Semeraro
- Department of Life Sciences, University of Trieste, Via Giorgieri 1, 34127 Trieste, Italy.
| | - Amelia Gamini
- Laboratory of Physical and Macromolecular Chemistry, Department of Chemical and Pharmaceutical Sciences, University of Trieste, Via Giorgieri 1, 34127 Trieste, Italy.
| | - Attilio Cesàro
- Laboratory of Physical and Macromolecular Chemistry, Department of Chemical and Pharmaceutical Sciences, University of Trieste, Via Giorgieri 1, 34127 Trieste, Italy.
- Elettra-Sincrotrone Trieste, Strada Statale 14 km 163.5, Area Science Park, 34149 Trieste, Italy.
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78
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Agban Y, Lian J, Prabakar S, Seyfoddin A, Rupenthal ID. Nanoparticle cross-linked collagen shields for sustained delivery of pilocarpine hydrochloride. Int J Pharm 2016; 501:96-101. [DOI: 10.1016/j.ijpharm.2016.01.069] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Revised: 01/11/2016] [Accepted: 01/27/2016] [Indexed: 01/08/2023]
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79
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Hydrogels in ophthalmic applications. Eur J Pharm Biopharm 2015; 95:227-38. [DOI: 10.1016/j.ejpb.2015.05.016] [Citation(s) in RCA: 130] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Revised: 05/05/2015] [Accepted: 05/21/2015] [Indexed: 12/20/2022]
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80
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Henderson TM, Ladewig K, Haylock DN, McLean KM, O’Connor AJ. Formation and characterisation of a modifiable soft macro-porous hyaluronic acid cryogel platform. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2015; 26:881-97. [DOI: 10.1080/09205063.2015.1065597] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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81
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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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82
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Photo-cross-linking of amniotic membranes for limbal epithelial cell cultivation. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 45:313-9. [DOI: 10.1016/j.msec.2014.09.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2014] [Revised: 07/27/2014] [Accepted: 09/01/2014] [Indexed: 11/15/2022]
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83
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Lai JY, Wang PR, Luo LJ, Chen ST. Stabilization of collagen nanofibers with L-lysine improves the ability of carbodiimide cross-linked amniotic membranes to preserve limbal epithelial progenitor cells. Int J Nanomedicine 2014; 9:5117-30. [PMID: 25395849 PMCID: PMC4227622 DOI: 10.2147/ijn.s69689] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
To overcome the drawbacks associated with limited cross-linking efficiency of carbodiimide modified amniotic membrane, this study investigated the use of l-lysine as an additional amino acid bridge to enhance the stability of a nanofibrous tissue matrix for a limbal epithelial cell culture platform. Results of ninhydrin assays and zeta potential measurements showed that the amount of positively charged amino acid residues incorporated into the tissue collagen chains is highly correlated with the l-lysine-pretreated concentration. The cross-linked structure and hydrophilicity of amniotic membrane scaffolding materials affected by the lysine molecular bridging effects were determined. With an increase in the l-lysine-pretreated concentration from 1 to 30 mM, the cross-linking density was significantly increased and water content was markedly decreased. The variations in resistance to thermal denaturation and enzymatic degradation were in accordance with the number of cross-links per unit mass of amniotic membrane, indicating l-lysine-modulated stabilization of collagen molecules. It was also noteworthy that the carbodiimide cross-linked tissue samples prepared using a relatively high l-lysine-pretreated concentration (ie, 30 mM) appeared to have decreased light transmittance and biocompatibility, probably due to the influence of a large nanofiber size and a high charge density. The rise in stemness gene and protein expression levels was dependent on improved cross-link formation, suggesting the crucial role of amino acid bridges in constructing suitable scaffolds to preserve limbal progenitor cells. It is concluded that mild to moderate pretreatment conditions (ie, 3–10 mM l-lysine) can provide a useful strategy to assist in the development of carbodiimide cross-linked amniotic membrane as a stable stem cell niche for corneal epithelial tissue engineering.
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Affiliation(s)
- Jui-Yang Lai
- Institute of Biochemical and Biomedical Engineering, Chang Gung University, Taoyuan, Taiwan, Republic of China ; Biomedical Engineering Research Center, Chang Gung University, Taoyuan, Taiwan, Republic of China ; Molecular Medicine Research Center, Chang Gung University, Taoyuan, Taiwan, Republic of China
| | - Pei-Ran Wang
- Institute of Biochemical and Biomedical Engineering, Chang Gung University, Taoyuan, Taiwan, Republic of China
| | - Li-Jyuan Luo
- Institute of Biochemical and Biomedical Engineering, Chang Gung University, Taoyuan, Taiwan, Republic of China
| | - Si-Tan Chen
- Institute of Biochemical and Biomedical Engineering, Chang Gung University, Taoyuan, Taiwan, Republic of China
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84
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Biofunctionalization of gelatin microcarrier with oxidized hyaluronic acid for corneal keratocyte cultivation. Colloids Surf B Biointerfaces 2014; 122:277-286. [DOI: 10.1016/j.colsurfb.2014.07.009] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2014] [Revised: 07/07/2014] [Accepted: 07/08/2014] [Indexed: 12/22/2022]
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85
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Coimbra P, Gil MH, Figueiredo M. Tailoring the properties of gelatin films for drug delivery applications: influence of the chemical cross-linking method. Int J Biol Macromol 2014; 70:10-9. [PMID: 24971558 DOI: 10.1016/j.ijbiomac.2014.06.021] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2014] [Revised: 06/05/2014] [Accepted: 06/10/2014] [Indexed: 11/24/2022]
Abstract
Two types of chemically cross-linked gelatin films were prepared and characterized. The first type of films was cross-linked with 1-ethyl-3-(3-dimethyl aminopropyl)carbodiimide hydrochloride (EDC) under heterogeneous conditions and are named Gel-E. In the second type of films, gelatin was previously functionalized with methacrylamide side groups by the reaction with methacrylic anhydride and for that is named Gel-MA. The modified gelatin was subsequently cross-linked by a photoinitiated radical polymerization. These films were characterized relatively to their degree of cross-linking, buffer uptake capacity, resistance to hydrolytic and proteolytic degradation, and mechanical and thermal properties. Results show that the employed cross-linking method, together with the degree cross-linking, dictate the final properties of the films. Gel-E films have significant lower buffer uptake capacities and higher resistance to collagenase digestion when compared to Gel-MA films. Additionally, Gel-E films exhibit higher values of stress at break and lower strains at break. Moreover, the films properties could be modified by varying the extent of the chemical cross-linking, which in turn could be controlled by varying the concentration of EDC, for the first type of films (Gel-E), or by using gelatins with different degrees of functionalization, in the case of the second type of films (Gel-MA).
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Affiliation(s)
- P Coimbra
- CIEPQPF, Chemical Engineering Department, University of Coimbra, Polo II, 3030-290 Coimbra, Portugal.
| | - M H Gil
- CIEPQPF, Chemical Engineering Department, University of Coimbra, Polo II, 3030-290 Coimbra, Portugal
| | - M Figueiredo
- CIEPQPF, Chemical Engineering Department, University of Coimbra, Polo II, 3030-290 Coimbra, Portugal
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86
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Rose JB, Pacelli S, Haj AJE, Dua HS, Hopkinson A, White LJ, Rose FRAJ. Gelatin-Based Materials in Ocular Tissue Engineering. MATERIALS (BASEL, SWITZERLAND) 2014; 7:3106-3135. [PMID: 28788609 PMCID: PMC5453355 DOI: 10.3390/ma7043106] [Citation(s) in RCA: 198] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/04/2014] [Revised: 03/17/2014] [Accepted: 03/24/2014] [Indexed: 12/13/2022]
Abstract
Gelatin has been used for many years in pharmaceutical formulation, cell culture and tissue engineering on account of its excellent biocompatibility, ease of processing and availability at low cost. Over the last decade gelatin has been extensively evaluated for numerous ocular applications serving as cell-sheet carriers, bio-adhesives and bio-artificial grafts. These different applications naturally have diverse physical, chemical and biological requirements and this has prompted research into the modification of gelatin and its derivatives. The crosslinking of gelatin alone or in combination with natural or synthetic biopolymers has produced a variety of scaffolds that could be suitable for ocular applications. This review focuses on methods to crosslink gelatin-based materials and how the resulting materials have been applied in ocular tissue engineering. Critical discussion of recent innovations in tissue engineering and regenerative medicine will highlight future opportunities for gelatin-based materials in ophthalmology.
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Affiliation(s)
- James B Rose
- School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, UK.
| | - Settimio Pacelli
- Department of Drug Chemistry and Technologies, "Sapienza" University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy.
| | - Alicia J El Haj
- Institute for Science and Technology in Medicine, Keele University, Stoke-on-Trent ST4 7QB, UK.
| | - Harminder S Dua
- Academic Ophthalmology, Division of Clinical Neuroscience, University of Nottingham, Nottingham NG7 2RD, UK.
| | - Andrew Hopkinson
- Academic Ophthalmology, Division of Clinical Neuroscience, University of Nottingham, Nottingham NG7 2RD, UK.
| | - Lisa J White
- School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, UK.
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87
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Chhabra H, Gupta P, Verma PJ, Jadhav S, Bellare JR. Gelatin–PMVE/MA composite scaffold promotes expansion of embryonic stem cells. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 37:184-94. [DOI: 10.1016/j.msec.2013.12.033] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2013] [Revised: 11/16/2013] [Accepted: 12/25/2013] [Indexed: 12/13/2022]
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88
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Lai JY. Effect of chemical composition on corneal tissue response to photopolymerized materials comprising 2-hydroxyethyl methacrylate and acrylic acid. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 34:334-40. [DOI: 10.1016/j.msec.2013.09.026] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2013] [Revised: 09/08/2013] [Accepted: 09/20/2013] [Indexed: 10/26/2022]
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89
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Cirillo G, Mauro MV, Spizzirri UG, Cavalcanti P, Puoci F, Giraldi C, Vittorio O, Picci N, Iemma F. Synthesis, characterization and antimicrobial activity of conjugates based on fluoroquinolon-type antibiotics and gelatin. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2014; 25:67-77. [PMID: 24105417 DOI: 10.1007/s10856-013-5053-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2013] [Accepted: 09/16/2013] [Indexed: 06/02/2023]
Abstract
Different fluoroquinolon-type antibiotics were conjugated to gelatin with the aim to synthesize biomacromolecules with antimicrobial properties. The covalent linkage of the antibiotic was performed by a radical process involving the residues in the side chains of gelatin able to undergo oxidative modifications. The conjugation of antibiotic moieties onto the protein structure was confirmed by FT-IR, UV-Vis, fluorescence, and calorimetric analyses. Biocompatibility tests were performed on human bone marrow mesenchymal stromal cells and the antibacterial properties of bioactive polymers were investigated by appropriate tests against Klebsiella pneumoniae and Escherichia coli. With regard to the tests conducted in the presence of E. coli, a minimum inhibitory concentration (MIC) ranging from 0.05 to 0.40 μg mL(-1) was recorded, while in the presence of K. pneumoniae this concentration varies from 0.10 to 1.60 μg mL(-1). In all the conjugates, the drug moieties retain their biological activity and the MIC values are lower than the resistance parameters of fluoroquinolon-type antibiotics versus Enterobacteriacae. The collected data suggest a broad range of applications, from biomedical to pharmaceutical and food science for all conjugates.
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Affiliation(s)
- Giuseppe Cirillo
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, Edificio Polifunzionale, 87036, Rende, CS, Italy
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90
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Lai JY. Relationship between structure and cytocompatibility of divinyl sulfone cross-linked hyaluronic acid. Carbohydr Polym 2014; 101:203-12. [DOI: 10.1016/j.carbpol.2013.09.060] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2013] [Revised: 09/17/2013] [Accepted: 09/18/2013] [Indexed: 11/25/2022]
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91
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Vadlapudi AD, Cholkar K, Vadlapatla RK, Mitra AK. Aqueous nanomicellar formulation for topical delivery of biotinylated lipid prodrug of acyclovir: formulation development and ocular biocompatibility. J Ocul Pharmacol Ther 2013; 30:49-58. [PMID: 24192229 DOI: 10.1089/jop.2013.0157] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
PURPOSE The objective of this study was to develop a clear, aqueous nanomicellar formulation and evaluate its in vitro ocular biocompatibility as a novel carrier for topical ocular delivery of biotinylated lipid prodrug for the treatment of herpetic keratitis. METHODS Micellar formulation of Biotin-12Hydroxystearic acid-acyclovir (B-12HS-ACV) was prepared by solvent evaporation/film hydration method with two nonionic surfactants, vitamin E TPGS and octoxynol-40. The optimized formulation was characterized for various parameters including micelle size, polydispersity index (PDI), and zeta-potential and in vitro prodrug release. Human corneal epithelial cells (HCECs) were employed for studying the cytotoxicity of the formulation. Further, mRNA expression levels of various cytokines were also studied with quantitative real-time PCR (qPCR). RESULTS Average size was 10.46±0.05 nm with a PDI of 0.086 for blank nanomicelles, and 10.78±0.09 nm with a PDI of 0.075 for prodrug-loaded nanomicelles. Both unloaded and prodrug-loaded nanomicelles had low negative zeta potential. Prodrug encapsulation efficiency of mixed nanomicelles was calculated to be ∼90%. Transmission electron microscopy analysis revealed that nanomicelles were spherical, homogenous, and devoid of aggregates. B-12HS-ACV release from nanomicelles was slow with no significant burst effect. Results show a sustained release of the prodrug from nanomicelles over a period of 4 days. Neither the blank formulation nor the prodrug-loaded micellar formulation demonstrated any cytotoxic effects. Further, incubation of HCECs with blank and prodrug-loaded nanomicellar groups did not significantly alter the expression levels of IL-1β, IL-6, IL-8, IL-17, TNF-α, and IFN-γ. CONCLUSIONS In summary, a topical clear, aqueous nanomicellar formulation comprised of vitamin E TPGS and octoxynol-40 loaded with 0.1% B-12HS-ACV was successfully developed. B-12HS-ACV-loaded nanomicelles are small in size, spherical, and homogenous, without any aggregates. The micellar formulations were perfectly transparent similar to pure water. Ocular biocompatibility studies indicated that mixed nanomicelles were nontoxic and noninflammatory to corneal epithelial cells. Therefore, nanomicellar technology represents a promising strategy for the delivery of biotinylated lipid prodrugs of ACV.
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Affiliation(s)
- Aswani Dutt Vadlapudi
- Division of Pharmaceutical Sciences, School of Pharmacy, University of Missouri-Kansas City , Kansas City, Missouri
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92
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Lai JY, Ma DHK. Glutaraldehyde cross-linking of amniotic membranes affects their nanofibrous structures and limbal epithelial cell culture characteristics. Int J Nanomedicine 2013; 8:4157-68. [PMID: 24204144 PMCID: PMC3817029 DOI: 10.2147/ijn.s52731] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Given that the cells can sense nanometer dimensions, the chemical cross-linking-mediated alteration in fibrillar structure of collagenous tissue scaffolds is critical to determining their cell culture performances. This article explores, for the first time, the effect of nanofibrous structure of glutaraldehyde (GTA) cross-linked amniotic membrane (AM) on limbal epithelial cell (LEC) cultivation. Results of ninhydrin assays demonstrated that the amount of new cross-links formed between the collagen chains is significantly increased with increasing the cross-linking time from 1 to 24 hours. By transmission electron microscopy, the AM treated with GTA for a longer duration exhibited a greater extent of molecular aggregation, thereby leading to a considerable increase in nanofiber diameter and resistance against collagenase degradation. In vitro biocompatibility studies showed that the samples cross-linked with GTA for 24 hours are not well-tolerated by the human corneal epithelial cell cultures. When the treatment duration is less than 6 hours, the biological tissues cross-linked with GTA for a longer time may cause slight reductions in 3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium, inner salt, and anti-inflammatory activities. Nevertheless, significant collagen molecular aggregation also enhances the stemness gene expression, indicating a high ability of these AM matrices to preserve the progenitors of LECs in vitro. It is concluded that GTA cross-linking of collagenous tissue materials may affect their nanofibrous structures and corneal epithelial stem cell culture characteristics. The AM treated with GTA for 6 hours holds promise for use as a niche for the expansion and transplantation of limbal epithelial progenitor cells.
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Affiliation(s)
- Jui-Yang Lai
- Institute of Biochemical and Biomedical Engineering, Chang Gung University, Taoyuan, Taiwan ; Biomedical Engineering Research Center, Chang Gung University, Taoyuan, Taiwan ; Molecular Medicine Research Center, Chang Gung University, Taoyuan, Taiwan
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93
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Lai JY. Biodegradable in situ gelling delivery systems containing pilocarpine as new antiglaucoma formulations: effect of a mercaptoacetic acid/N-isopropylacrylamide molar ratio. DRUG DESIGN DEVELOPMENT AND THERAPY 2013; 7:1273-85. [PMID: 24187486 PMCID: PMC3810330 DOI: 10.2147/dddt.s53759] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Ocular drug delivery is one of the most commonly used treatment modalities in the management of glaucoma. We have recently proposed the use of gelatin and poly(N-isopropylacrylamide) (PNIPAAm) graft copolymers as biodegradable in situ forming delivery systems for the intracameral administration of antiglaucoma medications. In this study, we further investigated the influence of carrier characteristics on drug delivery performance. The carboxyl-terminated PNIPAAm samples with different molecular weights were synthesized by varying the molar ratio of mercaptoacetic acid (MAA)/N-isopropylacrylamide (NIPAAm) from 0.05 to 1.25, and were determined by end-group titration. The preparation of gelatin-g-PNIPAAm (GN) copolymers from these thermoresponsive polymers was achieved using carbodiimide chemistry. Our results showed that the carboxylic end-capped PNIPAAm of high molecular weight may lead to the lower thermal phase transition temperature and slower degradation rate of GN vehicles than its low molecular weight counterparts. With a decreasing MAA/NIPAAm molar ratio, the drug encapsulation efficiency of copolymers was increased due to fast temperature-triggered capture of pilocarpine nitrate. The degradation of the gelatin network could greatly affect the drug release profiles. All of the GN copolymeric carriers demonstrated good corneal endothelial cell and tissue compatibility. It is concluded that different types of GN-based delivery systems exhibit noticeably distinct intraocular pressure-lowering effect and miosis action, thereby reflecting the potential value of a MAA/NIPAAm molar ratio in the development of new antiglaucoma formulations.
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Affiliation(s)
- Jui-Yang Lai
- Institute of Biochemical and Biomedical Engineering, Biomedical Engineering Research Center, Molecular Medicine Research Center, Chang Gung University, Taoyuan, Taiwan
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94
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Feng S, Chen H, Liu Y, Huang Z, Sun X, Zhou L, Lu X, Gao Q. A novel vitreous substitute of using a foldable capsular vitreous body injected with polyvinylalcohol hydrogel. Sci Rep 2013; 3:1838. [PMID: 23670585 PMCID: PMC3653144 DOI: 10.1038/srep01838] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2013] [Accepted: 04/30/2013] [Indexed: 01/18/2023] Open
Abstract
Hydrogels may be the ideal vitreous substitutes due to their wonderful physical features and biocompatibility. However, their drawbacks, short residence time, and biodegradation in vivo, have led to the fact that none of them have been approved for clinical use. In this study, we developed a novel approach of using a foldable capsular vitreous body (FCVB) injected with polyvinylalcohol (PVA) hydrogel as a vitreous substitute for long-term tamponade. The 3% PVA hydrogel that was cross-linked by gamma irradiation showed good rheological and physical properties and had no toxicity in vitro. After 180 days retention, the 3% PVA hydrogel inside FCVB remained transparent and showed good viscoelasticity without biodegradation and showed good biocompatibility and retina support. This new approach may develop into a valuable tool to improve the stability performance of PVA hydrogel as a vitreous substitute and to extend the application function of FCVB for long-term implantation in vitreous cavity.
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Affiliation(s)
- Songfu Feng
- Zhongshan Ophthalmic Center, State Key Laboratory of Ophthalmology, Sun Yat-sen University, Guangzhou 510060, China
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95
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Serban MA, Knight T, Payne RG, Basu J, Rivera EA, Robbins N, McCoy D, Halberstadt C, Jain D, Bertram TA. Cross-linked gelatin microspheres with continuously tunable degradation profiles for renal tissue regeneration. Biotechnol Appl Biochem 2013; 61:75-81. [DOI: 10.1002/bab.1125] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2013] [Accepted: 05/16/2013] [Indexed: 11/08/2022]
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96
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Lai JY. Influence of solvent composition on the performance of carbodiimide cross-linked gelatin carriers for retinal sheet delivery. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2013; 24:2201-2210. [PMID: 23677435 DOI: 10.1007/s10856-013-4961-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2012] [Accepted: 05/07/2013] [Indexed: 06/02/2023]
Abstract
Gelatin is a protein molecule that displays bioaffinity and provides a template to guide retinal pigment epithelial (RPE) cell organization and growth. We have recently demonstrated that the carbodiimide cross-linked gelatin membranes can be used as retinal sheet carriers. The purpose of this work was to further determine the role of solvent composition in the tissue delivery performance of chemically modified biopolymer matrices. The gelatin molecules were treated with 1-ethyl-3-(3-dimethyl aminopropyl) carbodiimide (EDC) in the presence of binary ethanol/water mixtures with varying ethanol concentrations (70-95 vol%) to obtain the carriers with different cross-linking efficiencies and mechanical properties. Results of melting point measurements and in vitro degradation tests showed that when the cross-linking index reached a high level of around 45 %, the EDC cross-linked gelatin materials have sufficient thermal stability and resistance to enzymatic degradation, indicating their suitability for the development of carriers for retinal sheet delivery. Irrespective of the solvent composition, the chemically modified gelatin samples are compatible toward human RPE cells without causing toxicity and inflammation. In particular, the membrane carriers prepared by the cross-linking in the presence of solvent mixtures containing 80-90 vol% of ethanol have no impact on the proliferative capacity of ARPE-19 cultures and possess good efficiency in transferring and encapsulating the retinal tissues. It is concluded that, except for cell viability and pro-inflammatory cytokine expression, the retinal sheet delivery performance strongly depends on the solvent composition for EDC cross-linking of gelatin molecules.
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Affiliation(s)
- Jui-Yang Lai
- Institute of Biochemical and Biomedical Engineering, Chang Gung University, Taoyuan, 33302 Taiwan, Republic of China.
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97
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Tavakol S, Azami M, Khoshzaban A, Ragerdi Kashani I, Tavakol B, Hoveizi E, Rezayat Sorkhabadi SM. Effect of laminated hydroxyapatite/gelatin nanocomposite scaffold structure on osteogenesis using unrestricted somatic stem cells in rat. Cell Biol Int 2013; 37:1181-9. [DOI: 10.1002/cbin.10143] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2012] [Accepted: 06/10/2013] [Indexed: 02/05/2023]
Affiliation(s)
- Shima Tavakol
- Department of Medical Nanotechnology, School of Advanced Technologies in Medicine; Tehran University of Medical Sciences; Tehran; Iran
| | - Mahmoud Azami
- Department of Tissue Engineering, School of Advanced Technologies in Medicine; Tehran University of Medical Sciences; Tehran; Iran
| | - Ahad Khoshzaban
- Iranian Tissue Bank Research & Preparation Center; Tehran University of Medical Sciences; Tehran; Iran
| | - Iraj Ragerdi Kashani
- Department of Anatomy, School of Medicine; Tehran University of Medical Sciences; Tehran; Iran
| | - Behnaz Tavakol
- Department of Medicine; Kashan University of Medical Sciences; Kashan; Iran
| | - Elham Hoveizi
- Department of biology; Faculty of Sciences, Shahid Chamran University; Ahvaz; Iran
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98
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Lai JY. Effect of chemical composition on corneal cellular response to photopolymerized materials comprising 2-hydroxyethyl methacrylate and acrylic acid. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:3704-10. [PMID: 23910267 DOI: 10.1016/j.msec.2013.04.059] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2013] [Revised: 04/23/2013] [Accepted: 04/29/2013] [Indexed: 02/07/2023]
Abstract
Characterization of corneal cellular response to hydrogel materials is an important issue in ophthalmic applications. In this study, we aimed to investigate the relationship between the feed composition of 2-hydroxyethyl methacrylate (HEMA)/acrylic acid (AAc) and material compatibility towards corneal stromal and endothelial cells. The monomer solutions of HEMA and AAc were mixed at varying volume ratios of 92:0, 87:5, 82:10, 77:15, and 72:20, and were subjected to UV irradiation. Results of electrokinetic measurements showed that an increase in absolute zeta potential of photopolymerized membranes is observed with increasing the volume ratios of AAc/HEMA. Following 4 days of incubation with various hydrogels, the primary rabbit corneal stromal and endothelial cell cultures were examined for viability, proliferation, and pro-inflammatory gene expression. The samples prepared from the solution mixture containing 0-10 vol.% AAc displayed good cytocompatibility. However, with increasing volume ratio of AAc and HEMA from 15:77 to 20:72, the decreased viability, inhibited proliferation, and stimulated inflammation were noted in both cell types, probably due to the stronger charge-charge interactions. On the other hand, the ionic pump function of corneal endothelial cells exposed to photopolymerized membranes was examined by analyzing the Na(+),K(+)-ATPase alpha 1 subunit (ATP1A1) expression level. The presence of material samples having higher anionic charge density (i.e., zeta potential of -38 to -56 mV) may lead to abnormal transmembrane transport. It is concluded that the chemical composition of HEMA/AAc has an important influence on the corneal stromal and endothelial cell responses to polymeric biomaterials.
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Affiliation(s)
- Jui-Yang Lai
- Institute of Biochemical and Biomedical Engineering, Chang Gung University, Taoyuan 33302, Taiwan.
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99
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Cirillo G, Vittorio O, Hampel S, Spizzirri UG, Picci N, Iemma F. Incorporation of carbon nanotubes into a gelatin–catechin conjugate: Innovative approach for the preparation of anticancer materials. Int J Pharm 2013; 446:176-82. [DOI: 10.1016/j.ijpharm.2013.02.023] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2012] [Revised: 01/30/2013] [Accepted: 02/08/2013] [Indexed: 10/27/2022]
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100
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On the development and characterisation of crosslinked sodium alginate/gelatine hydrogels. J Mech Behav Biomed Mater 2013; 18:152-66. [DOI: 10.1016/j.jmbbm.2012.11.010] [Citation(s) in RCA: 145] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2012] [Revised: 11/18/2012] [Accepted: 11/25/2012] [Indexed: 01/05/2023]
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