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Johnson M, Song R, Li Y, Milne C, Lyu J, Lara-Sáez I, A S, Wang W. Hyaluronic Acid/Chondroitin Sulfate-Based Dynamic Thiol-Aldehyde Addition Hydrogel: An Injectable, Self-Healing, On-Demand Dissolution Wound Dressing. MATERIALS (BASEL, SWITZERLAND) 2024; 17:3003. [PMID: 38930372 PMCID: PMC11205580 DOI: 10.3390/ma17123003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2024] [Revised: 06/06/2024] [Accepted: 06/11/2024] [Indexed: 06/28/2024]
Abstract
Frequent removal and reapplication of wound dressings can cause mechanical disruption to the healing process and significant physical discomfort for patients. In response to this challenge, a dynamic covalent hydrogel has been developed to advance wound care strategies. This system comprises aldehyde functionalized chondroitin sulfate (CS-CHO) and thiolated hyaluronic acid (HA-SH), with the distinct ability to form in situ via thiol-aldehyde addition and dissolve on-demand via the thiol-hemithioacetal exchange reaction. Although rarely reported, the dynamic covalent reaction of thiol-aldehyde addition holds great promise for the preparation of dynamic hydrogels due to its rapid reaction kinetics and easy reversible dissociation. The thiol-aldehyde addition chemistry provides the hydrogel system with highly desirable characteristics of rapid gelation (within seconds), self-healing, and on-demand dissolution (within 30 min). The mechanical and dissolution properties of the hydrogel can be easily tuned by utilizing CS-CHO materials of different aldehyde functional group contents. The chemical structure, rheology, self-healing, swelling profile, degradation rate, and cell biocompatibility of the hydrogels are characterized. The hydrogel possesses excellent biocompatibility and proves to be significant in promoting cell proliferation in vitro when compared to a commercial hydrogel (HyStem® Cell Culture Scaffold Kit). This study introduces the simple fabrication of a new dynamic hydrogel system that can serve as an ideal platform for biomedical applications, particularly in wound care treatments as an on-demand dissolvable wound dressing.
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Affiliation(s)
- Melissa Johnson
- Charles Institute of Dermatology, School of Medicine, University College Dublin, D04 V1W8 Dublin, Ireland (J.L.); (I.L.-S.)
| | - Rijian Song
- Charles Institute of Dermatology, School of Medicine, University College Dublin, D04 V1W8 Dublin, Ireland (J.L.); (I.L.-S.)
| | - Yinghao Li
- Charles Institute of Dermatology, School of Medicine, University College Dublin, D04 V1W8 Dublin, Ireland (J.L.); (I.L.-S.)
| | - Cameron Milne
- Charles Institute of Dermatology, School of Medicine, University College Dublin, D04 V1W8 Dublin, Ireland (J.L.); (I.L.-S.)
| | - Jing Lyu
- Charles Institute of Dermatology, School of Medicine, University College Dublin, D04 V1W8 Dublin, Ireland (J.L.); (I.L.-S.)
| | - Irene Lara-Sáez
- Charles Institute of Dermatology, School of Medicine, University College Dublin, D04 V1W8 Dublin, Ireland (J.L.); (I.L.-S.)
| | - Sigen A
- Charles Institute of Dermatology, School of Medicine, University College Dublin, D04 V1W8 Dublin, Ireland (J.L.); (I.L.-S.)
- School of Medicine, Anhui University of Science and Technology, Huainan 232001, China
| | - Wenxin Wang
- Charles Institute of Dermatology, School of Medicine, University College Dublin, D04 V1W8 Dublin, Ireland (J.L.); (I.L.-S.)
- Research and Clinical Translation Center of Gene Medicine and Tissue Engineering, School of Public Health, Anhui University of Science and Technology, Huainan 232001, China
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Lin C, Ekblad-Nordberg Å, Michaëlsson J, Götherström C, Hsu CC, Ye H, Johansson J, Rising A, Sundström E, Åkesson E. In Vitro Study of Human Immune Responses to Hyaluronic Acid Hydrogels, Recombinant Spidroins and Human Neural Progenitor Cells of Relevance to Spinal Cord Injury Repair. Cells 2021; 10:1713. [PMID: 34359882 PMCID: PMC8303367 DOI: 10.3390/cells10071713] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 06/28/2021] [Accepted: 06/30/2021] [Indexed: 02/07/2023] Open
Abstract
Scaffolds of recombinant spider silk protein (spidroin) and hyaluronic acid (HA) hydrogel hold promise in combination with cell therapy for spinal cord injury. However, little is known concerning the human immune response to these biomaterials and grafted human neural stem/progenitor cells (hNPCs). Here, we analyzed short- and long-term in vitro activation of immune cells in human peripheral blood mononuclear cells (hPBMCs) cultured with/without recombinant spidroins, HA hydrogels, and/or allogeneic hNPCs to assess potential host-donor interactions. Viability, proliferation and phenotype of hPBMCs were analyzed using NucleoCounter and flow cytometry. hPBMC viability was confirmed after exposure to the different biomaterials. Short-term (15 h) co-cultures of hPBMCs with spidroins, but not with HA hydrogel, resulted in a significant increase in the proportion of activated CD69+ CD4+ T cells, CD8+ T cells, B cells and NK cells, which likely was caused by residual endotoxins from the Escherichia coli expression system. The observed spidroin-induced hPBMC activation was not altered by hNPCs. It is resource-effective to evaluate human compatibility of novel biomaterials early in development of the production process to, when necessary, make alterations to minimize rejection risk. Here, we present a method to evaluate biomaterials and hPBMC compatibility in conjunction with allogeneic human cells.
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Affiliation(s)
- Chenhong Lin
- Division of Neurogeriatrics, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, SE-171 64 Stockholm, Sweden;
| | - Åsa Ekblad-Nordberg
- Division of Obstetrics and Gynecology, Department of Clinical Science, Intervention and Technology, Karolinska Institutet, SE-141 52 Stockholm, Sweden; (Å.E.-N.); (C.G.)
| | - Jakob Michaëlsson
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, SE-141 86 Stockholm, Sweden;
| | - Cecilia Götherström
- Division of Obstetrics and Gynecology, Department of Clinical Science, Intervention and Technology, Karolinska Institutet, SE-141 52 Stockholm, Sweden; (Å.E.-N.); (C.G.)
| | - Chia-Chen Hsu
- Department of Engineering Science, Institute of Biomedical Engineering, University of Oxford, Oxford OX3 7DQ, UK; (C.-C.H.); (H.Y.)
| | - Hua Ye
- Department of Engineering Science, Institute of Biomedical Engineering, University of Oxford, Oxford OX3 7DQ, UK; (C.-C.H.); (H.Y.)
| | - Jan Johansson
- Department of Biosciences and Nutrition, Karolinska Institutet, SE-141 83 Stockholm, Sweden; (J.J.); (A.R.)
| | - Anna Rising
- Department of Biosciences and Nutrition, Karolinska Institutet, SE-141 83 Stockholm, Sweden; (J.J.); (A.R.)
- Department of Anatomy, Physiology and Biochemistry, Swedish University of Agricultural Sciences, SE-750 07 Uppsala, Sweden
| | - Erik Sundström
- Division of Neurogeriatrics, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, SE-171 64 Stockholm, Sweden;
| | - Elisabet Åkesson
- Division of Neurogeriatrics, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, SE-171 64 Stockholm, Sweden;
- The R&D Unit, Stockholms Sjukhem, SE-112 19 Stockholm, Sweden
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Hertegård S, Nagubothu SR, Malmström E, LeBlanc K. Treatment of vocal fold scarring with autologous bone marrow-derived human mesenchymal stromal cells-first phase I/II human clinical study. Stem Cell Res Ther 2020; 11:128. [PMID: 32197630 PMCID: PMC7083053 DOI: 10.1186/s13287-020-01632-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 02/24/2020] [Accepted: 03/02/2020] [Indexed: 01/05/2023] Open
Abstract
Background Vocal fold (VF) scarring, caused by surgery or inflammation, often results in severe voice problems or aphonia. Effective lasting treatment is lacking. Previous in vitro and in vivo animal studies reported positive effects on VF scar resolution with mesenchymal stromal cell (MSC) implantation. The principal aim of this study was to examine safety aspects and secondly treatment efficacy vocal fold function in patients with VF scarring and severe voice problems. Methods In this open-label phase I/II study, 16 patients were treated with surgical scar resection followed by injection of autologous MSCs (0.5–2 × 106 MSCs/patient). Patients were monitored 1 year for serious adverse events (SAE) or minor complications. Therapeutic efficacy on treated VFs was evaluated by measurement of VF vibrations using high-speed laryngoscopy (HSL) and phonation pressure threshold (PTP) for elasticity and VF function. Patients self-reported voice change using the Voice Handicap Index (VHI). Results No SAE or minor side effects were reported. Video ratings of VF vibrations and digitized analysis of HSL and PTP were significantly improved for 62–75% of the patients (depending on parameter). Two patients showed deteriorated VF vibrations, but improved PTP. VHI was significantly improved in 8 patients, with the remaining experiencing no significant change. Conclusions The results indicate that local injection of autologous MSC into scarred VFs with severe voice problems may offer a safe and feasible therapeutic option. VF vibration and elasticity were improved in approximately two thirds of treated patients. This clinical study is registered in clinicaltrials.gov (ID: NCT01981330). Retrospective registration of first patient (20130511). https//: register.clinicaltrials.gov/.
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Affiliation(s)
- Stellan Hertegård
- Department of Clinical Sciences and Intervention, Karolinska Institutet, Stockholm, Sweden. .,Department of Otorhinolaryngology, Karolinska University Hospital Huddinge, S-141 86, Stockholm, Sweden.
| | | | - Emma Malmström
- Department of Clinical Sciences and Intervention, Karolinska Institutet, Stockholm, Sweden.,Department of Otorhinolaryngology, Karolinska University Hospital Huddinge, S-141 86, Stockholm, Sweden
| | - Katarina LeBlanc
- Department of Laboratory Medicine, Karolinska Institutet, Huddinge, Sweden.,Patient Area Cell Therapies and Allogeneic Stem Cell Transplantation, Karolinska University Hospital Huddinge, Stockholm, Sweden
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Shi L, Zeng Y, Zhao Y, Yang B, Ossipov D, Tai CW, Dai J, Xu C. Biocompatible Injectable Magnetic Hydrogel Formed by Dynamic Coordination Network. ACS APPLIED MATERIALS & INTERFACES 2019; 11:46233-46240. [PMID: 31718134 DOI: 10.1021/acsami.9b17627] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Magnetic hydrogel that can respond to a magnetic stimulus is a promising biomaterial for tissue regeneration and cancer treatment. In this study, a novel magnetic hydrogel is formed by simply mixing bisphosphonate (BP)-modified hyaluronic acid (i.e., HA-BP) polymeric solution and iron oxide (Fe3O4) nanoparticle dispersion, in which the hydrogel networks are cross-linked by BP groups and iron atoms on the surface of particle. The iron-BP coordination chemistry affords a dynamic network, characterized by self-healing, shear-thinning, and smoothly injectable properties. Moreover, the HA-BP·Fe3O4 magnetic hydrogel demonstrates heat-generation characterization under an alternating magnetic field. The animal experiments confirm the biocompatibilities of HA-BP·Fe3O4 hydrogel, which presents the hydrogels potential for tissue regeneration and anticancer treatment applications.
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Affiliation(s)
- Liyang Shi
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology , Hunan University , Changsha 410082 , P. R. China
| | - Yuqin Zeng
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology , Hunan University , Changsha 410082 , P. R. China
| | - Yannan Zhao
- Center for Regenerative Medicine, State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology , Chinese Academy of Sciences , Beijing 100101 , P. R. China
| | - Bin Yang
- Center for Regenerative Medicine, State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology , Chinese Academy of Sciences , Beijing 100101 , P. R. China
| | - Dmitri Ossipov
- Department of Biosciences and Nutrition , Karolinska Institute , Häsovägen 7c , Huddinge 14157 , Sweden
| | - Cheuk-Wai Tai
- Department of Materials and Environmental Chemistry , Stockholm University , Stockholm 10691 , Sweden
| | - Jianwu Dai
- Center for Regenerative Medicine, State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology , Chinese Academy of Sciences , Beijing 100101 , P. R. China
| | - Changgang Xu
- School of Materials Science and Engineering , Xi'an University of Science and Technology , Xi'an 710054 , P. R. China
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Chen H, Yu Y, Wang C, Wang J, Liu C. The regulatory role of sulfated polysaccharides in facilitating rhBMP-2-induced osteogenesis. Biomater Sci 2019; 7:4375-4387. [PMID: 31429425 DOI: 10.1039/c9bm00529c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Sulfated polysaccharides have received much attention in recent years due to their special biological activities, especially the regulation of the biological activity of growth factors such as the representative inductive growth factor recombinant human bone morphogenetic protein-2 (rhBMP-2). However, the regulatory mechanisms from the aspect of the molecular chain structure have rarely been reported. In this article, we selected three kinds of sulfonates containing different backbone structures and functional groups, 2-N,6-O-sulfated chitosan (26 SCS), sulfated dextran (DSS) and poly(sodium-p-styrenesulfonate) (PSS), to explore the interaction between them and rhBMP-2. From in vivo and in vitro osteogenesis-related experiments, 26 SCS showed the best promoting effect on rhBMP-2 induced osteogenic differentiation and the sulfated amino group in 26 SCS could specifically bind to rhBMP-2. These findings indicated that the polysaccharide chain structure was a prerequisite for the synergy effect between 26 SCS and rhBMP-2; the effective combination of -SO3- and rhBMP-2 was an important factor in protecting the bioactivity of rhBMP-2. In addition, the presence of the sulfated amino group was the key factor in the specific binding between 26 SCS and rhBMP-2 and provided the possibility of capturing factors in vivo.
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Affiliation(s)
- Han Chen
- The State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237 People's Republic of China. and Engineering Research Center for Biomedical Materials of Ministry of Education, East China University of Science and Technology, Shanghai, 200237, People's Republic of China
| | - Yuanman Yu
- The State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237 People's Republic of China. and Engineering Research Center for Biomedical Materials of Ministry of Education, East China University of Science and Technology, Shanghai, 200237, People's Republic of China
| | - Chenmin Wang
- The State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237 People's Republic of China. and Engineering Research Center for Biomedical Materials of Ministry of Education, East China University of Science and Technology, Shanghai, 200237, People's Republic of China
| | - Jing Wang
- The State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237 People's Republic of China. and Engineering Research Center for Biomedical Materials of Ministry of Education, East China University of Science and Technology, Shanghai, 200237, People's Republic of China
| | - Changsheng Liu
- Engineering Research Center for Biomedical Materials of Ministry of Education, East China University of Science and Technology, Shanghai, 200237, People's Republic of China and Key Laboratory for Ultrafine Materials of Ministry of Education East China University of Science and Technology, Shanghai, 200237, People's Republic of China
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Pupkaite J, Rosenquist J, Hilborn J, Samanta A. Injectable Shape-Holding Collagen Hydrogel for Cell Encapsulation and Delivery Cross-linked Using Thiol-Michael Addition Click Reaction. Biomacromolecules 2019; 20:3475-3484. [DOI: 10.1021/acs.biomac.9b00769] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Justina Pupkaite
- Polymer Chemistry, Department of Chemistry—Ångström Laboratory, Uppsala University, Box 538, 751 21 Uppsala, Sweden
- Division of Cell Biology, Department of Clinical and Experimental Medicine, Linköping University, Linköping 582 25, Sweden
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa K1H 8M5, Ontario, Canada
| | - Jenny Rosenquist
- Polymer Chemistry, Department of Chemistry—Ångström Laboratory, Uppsala University, Box 538, 751 21 Uppsala, Sweden
| | - Jöns Hilborn
- Polymer Chemistry, Department of Chemistry—Ångström Laboratory, Uppsala University, Box 538, 751 21 Uppsala, Sweden
| | - Ayan Samanta
- Polymer Chemistry, Department of Chemistry—Ångström Laboratory, Uppsala University, Box 538, 751 21 Uppsala, Sweden
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da Rosa WLDO, da Silva TM, Galarça AD, Piva E, da Silva AF. Efficacy of rhBMP-2 in Cleft Lip and Palate Defects: Systematic Review and Meta-analysis. Calcif Tissue Int 2019; 104:115-129. [PMID: 30367200 DOI: 10.1007/s00223-018-0486-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Accepted: 10/15/2018] [Indexed: 01/21/2023]
Abstract
The aim of this study was to analyze the efficacy of using rhBMP-2 (recombinant human morphogenetic protein-2) in the treatment of patients with cleft lip and palate defects (CLPD). Seven databases were screened: PubMed (Medline), Lilacs, Ibecs, Web of Science, BBO, Scopus, and The Cochrane Library. Clinical trials that evaluated the use of bioactive treatment with rhBMP-2 in the treatment of patients with CLPD were included. Statistical analyses were performed by comparing the standardized mean difference of bone formation volume and bone filling percentage (p = 0.05). Ten studies compared the use of rhBMP-2 and iliac crest bone graft (ICBG). The global analysis for bone formation volume and bone filling percentage showed that bioactive materials were similar to ICBG with a standardized mean difference of respectively 0.07 (95% CI - 0.41 to 0.56) and 0.24 (95% CI - 0.32 to 0.80). The available literature suggested that use of rhBMP-2 presented similar bone formation results to those of ICBG in secondary alveolar bone grafting for patients with CLPD.
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Affiliation(s)
| | - Tiago Machado da Silva
- Department of Restorative Dentistry, School of Dentistry, Federal University of Pelotas, Pelotas, Brazil
| | - Arthur Dias Galarça
- Department of Restorative Dentistry, School of Dentistry, Federal University of Pelotas, Pelotas, Brazil
| | - Evandro Piva
- Department of Restorative Dentistry, School of Dentistry, Federal University of Pelotas, Pelotas, Brazil
| | - Adriana Fernandes da Silva
- Department of Restorative Dentistry, School of Dentistry, Federal University of Pelotas, Pelotas, Brazil.
- Department of Restorative Dentistry, Faculty of Dentistry, Federal University of Pelotas, Gonçalves Chaves St., 457, Room 503, Pelotas, RS, 96015-560, Brazil.
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Wang Y, Zhu W, Xiao K, Li Z, Ma Q, Li W, Shen S, Weng X. Self-healing and injectable hybrid hydrogel for bone regeneration of femoral head necrosis and defect. Biochem Biophys Res Commun 2019; 508:25-30. [DOI: 10.1016/j.bbrc.2018.11.097] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Revised: 11/09/2018] [Accepted: 11/15/2018] [Indexed: 01/22/2023]
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Bermejo-Velasco D, Dou W, Heerschap A, Ossipov D, Hilborn J. Injectable hyaluronic acid hydrogels with the capacity for magnetic resonance imaging. Carbohydr Polym 2018; 197:641-648. [DOI: 10.1016/j.carbpol.2018.06.028] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 04/02/2018] [Accepted: 06/05/2018] [Indexed: 01/25/2023]
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10
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Hulsart-Billström G, Selvaraju RK, Estrada S, Lubberink M, Asplund V, Bergman K, Marsell R, Larsson S, Antoni G. Non-invasive tri-modal visualisation via PET/SPECT/μCT of recombinant human bone morphogenetic protein-2 retention and associated bone regeneration: A proof of concept. J Control Release 2018; 285:178-186. [DOI: 10.1016/j.jconrel.2018.07.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Revised: 07/06/2018] [Accepted: 07/06/2018] [Indexed: 01/02/2023]
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Prolonged delivery of BMP-2 by a non-polymer hydrogel for bone defect regeneration. Drug Deliv Transl Res 2017; 8:178-190. [DOI: 10.1007/s13346-017-0451-y] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Baker AEG, Tam RY, Shoichet MS. Independently Tuning the Biochemical and Mechanical Properties of 3D Hyaluronan-Based Hydrogels with Oxime and Diels-Alder Chemistry to Culture Breast Cancer Spheroids. Biomacromolecules 2017; 18:4373-4384. [PMID: 29040808 DOI: 10.1021/acs.biomac.7b01422] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
For native breast cancer cell growth to be mimicked in vitro as spheroids, a well-defined matrix that mimics the tumor microenvironment is required. Finding a biomimetic material for 3D cell culture other than Matrigel has challenged the field. Because hyaluronan is naturally abundant in the tumor microenvironment and can be chemically modified, we synthesized a hyaluronan (HA) hydrogel with independently tunable mechanical and chemical properties for 3D culture of breast cancer cells. By modifying HA with distinct bioorthogonal functional groups, its mechanical properties are controlled by chemical cross-linking via oxime ligation, and its biochemical properties are controlled by grafting bioactive peptides via Diels-Alder chemistry. A series of hydrogels were screened in terms of stiffness and peptide composition for cancer spheroid formation. In the optimal hydrogel formulation, the 3D breast cancer spheroids showed decreased drug diffusion into their core and upregulation of cellular multidrug-resistant efflux pumps similar to what is observed in drug-resistant tumors. Our results highlight the potential of these tunable and well-defined gels in drug screening assays.
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Affiliation(s)
- Alexander E G Baker
- Department of Chemical Engineering and Applied Chemistry, University of Toronto , 200 College Street, Toronto, Ontario M5S 3E5, Canada.,Institute of Biomaterials and Biomedical Engineering, University of Toronto , 164 College Street, Room 407, Toronto, Ontario M5S 3G9, Canada
| | - Roger Y Tam
- Department of Chemical Engineering and Applied Chemistry, University of Toronto , 200 College Street, Toronto, Ontario M5S 3E5, Canada
| | - Molly S Shoichet
- Department of Chemical Engineering and Applied Chemistry, University of Toronto , 200 College Street, Toronto, Ontario M5S 3E5, Canada.,Institute of Biomaterials and Biomedical Engineering, University of Toronto , 164 College Street, Room 407, Toronto, Ontario M5S 3G9, Canada.,Department of Chemistry, University of Toronto , 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
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An in vivo cross-linkable hyaluronan gel with inherent anti-inflammatory properties reduces OA cartilage destruction in female mice subjected to cruciate ligament transection. Osteoarthritis Cartilage 2017; 25:157-165. [PMID: 27587077 DOI: 10.1016/j.joca.2016.08.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Revised: 08/17/2016] [Accepted: 08/22/2016] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To explore the possibility of cartilage protection in osteoarthritis (OA) by intraarticular injection of a chemically modified hyaluronan (HA) gel and investigate whether the chemical modifications provide intrinsic anti-inflammatory activity. METHOD OA was induced in C57BL/6 mice by anterior cruciate ligament transection (ACLT) and HA gel or carbazate-modified component was injected intra-articularly. Assessment of cartilage rescue was performed by histology, immunohistochemistry and TUNEL analysis. Serum levels of proinflammatory cytokines were evaluated with cytometric bead array, measuring IL-1β, TNF, IFN-γ, KC/CXCL1 and MCP-1. RESULTS Intraarticular injection of the HA gel showed significantly reduced cartilage destruction and decreased osteophyte formation. Besides the biological and biomechanical effects of HA, we investigated lipid peroxidation products as an alternative inflammatory and potential mechanism contributing to OA. To address this, injection of the carbazate-modified component alone was performed, which also demonstrated a cartilage-saving effect. Besides the cartilage amelioration effects, decreased apoptosis, 4-hydroxynonenal (4-HNE) and MHC class II staining was recorded. No changes in serum levels of proinflammatory cytokines were detected. CONCLUSION We have shown that the HA gel has an anti-destructive effect on articular cartilage (AC). Our results demonstrated that the carbazate-modified component could suppress apoptotic events, potentially by quenching of ROS/LPO products such as 4-HNE in OA joints. Modification of the HA molecule offers opportunities to introduce (covalent) coupling of additional molecules to the gel, with controlled retention and subsequent release in the joint.
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Babo PS, Reis RL, Gomes ME. Production and characterization of hyaluronic acid microparticles for the controlled delivery of growth factors using a spray/dehydration method. J Biomater Appl 2016; 31:693-707. [DOI: 10.1177/0885328216669475] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Hyaluronic acid is the main polysaccharide present in the connective tissue. Besides its structural function as backbone of the extracellular matrix, hyaluronic acid plays staple roles in several biological processes including the modulation of inflammation and wound healing processes. The application of hyaluronic acid in regenerative medicine, either as cells and/or drug/growth factors delivery vehicles, relies on its ability to be cross-linked using a plethora of reactions, producing stable hydrogels. In this work, we propose a novel method for the production of hyaluronic acid microparticles that presents several advantages over others that have been used. Basically, droplets of hyaluronic acid solution produced with a nozzle are collected in an isopropanol dehydration bath, and stabilized after crosslinking with adipic acid dihydrazide, using a cabodiimide-based chemistry. The size and morphology of the hyaluronic acid microparticles produced by this method varied with the molecular weight and concentration of the hyaluronic acid solution, the nozzle chamber pressure, the distance between the nozzle and the crosslinking solution, and the number of crosslinking steps. The degree of crosslinking of the hyaluronic acid microparticles produced was tunable and allowed to control the rate of the degradation promoted by hyaluronidase. Moreover, the particles were loaded with platelet lysate, a hemoderivative rich in cytokines with interest for regenerative medicine applications. The hyaluronic acid microparticles showed potential to bind selectively to positively charged molecules, as the factors present in the platelet lysate. It is envisioned that these can be further released in a sustained manner by ion exchange or by the degradation of the hyaluronic acid microparticles matrix promoted by extracellular matrix remodeling.
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Affiliation(s)
- Pedro S Babo
- 3B's Research Group – Biomaterials, Biodegradables and Biomimetics, University of Minho, Guimarães, Portugal
- ICVS/3B's – PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Rui L Reis
- 3B's Research Group – Biomaterials, Biodegradables and Biomimetics, University of Minho, Guimarães, Portugal
- ICVS/3B's – PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Manuela E Gomes
- 3B's Research Group – Biomaterials, Biodegradables and Biomimetics, University of Minho, Guimarães, Portugal
- ICVS/3B's – PT Government Associate Laboratory, Braga/Guimarães, Portugal
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15
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Kootala S, Zhang Y, Ghalib S, Tolmachev V, Hilborn J, Ossipov DA. Control of growth factor binding and release in bisphosphonate functionalized hydrogels guides rapid differentiation of precursor cells in vitro. Biomater Sci 2016; 4:250-4. [DOI: 10.1039/c5bm00355e] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Sequestration and active release of BMP-2 in HA-BP hydrogels to precursor cells aid rapid differentiation to osteoblasts.
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Affiliation(s)
- Sujit Kootala
- Science for Life Laboratory
- Department of Chemistry-Ångström Laboratory
- Uppsala University
- Uppsala
- Sweden
| | - Yu Zhang
- Science for Life Laboratory
- Department of Chemistry-Ångström Laboratory
- Uppsala University
- Uppsala
- Sweden
| | - Sara Ghalib
- Science for Life Laboratory
- Department of Chemistry-Ångström Laboratory
- Uppsala University
- Uppsala
- Sweden
| | - Vladimir Tolmachev
- Unit of Biomedical Radiation Sciences
- Rudbeck Laboratory
- Uppsala University
- S-75121 Uppsala
- Sweden
| | - Jöns Hilborn
- Science for Life Laboratory
- Department of Chemistry-Ångström Laboratory
- Uppsala University
- Uppsala
- Sweden
| | - Dmitri A. Ossipov
- Science for Life Laboratory
- Department of Chemistry-Ångström Laboratory
- Uppsala University
- Uppsala
- Sweden
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16
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Short AR, Koralla D, Deshmukh A, Wissel B, Stocker B, Calhoun M, Dean D, Winter JO. Hydrogels That Allow and Facilitate Bone Repair, Remodeling, and Regeneration. J Mater Chem B 2015; 3:7818-7830. [PMID: 26693013 PMCID: PMC4675359 DOI: 10.1039/c5tb01043h] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Bone defects can originate from a variety of causes, including trauma, cancer, congenital deformity, and surgical reconstruction. Success of the current "gold standard" treatment (i.e., autologous bone grafts) is greatly influenced by insufficient or inappropriate bone stock. There is thus a critical need for the development of new, engineered materials for bone repair. This review describes the use of natural and synthetic hydrogels as scaffolds for bone tissue engineering. We discuss many of the advantages that hydrogels offer as bone repair materials, including their potential for osteoconductivity, biodegradability, controlled growth factor release, and cell encapsulation. We also discuss the use of hydrogels in composite devices with metals, ceramics, or polymers. These composites are useful because of the low mechanical moduli of hydrogels. Finally, the potential for thermosetting and photo-cross-linked hydrogels as three-dimensionally (3D) printed, patient-specific devices is highlighted. Three-dimensional printing enables controlled spatial distribution of scaffold materials, cells, and growth factors. Hydrogels, especially natural hydrogels present in bone matrix, have great potential to augment existing bone tissue engineering devices for the treatment of critical size bone defects.
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Affiliation(s)
- Aaron R. Short
- Department of Biomedical Engineering, The Ohio State University, Columbus, Ohio, USA
| | - Deepthi Koralla
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, Ohio, USA
| | - Ameya Deshmukh
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio, USA
| | - Benjamin Wissel
- Department of Biomedical Engineering, The Ohio State University, Columbus, Ohio, USA
| | - Benjamin Stocker
- Department of Biomedical Engineering, The Ohio State University, Columbus, Ohio, USA
| | - Mark Calhoun
- Department of Biomedical Engineering, The Ohio State University, Columbus, Ohio, USA
| | - David Dean
- Department of Plastic Surgery, The Ohio State University, Columbus, Ohio, USA
| | - Jessica O. Winter
- Department of Biomedical Engineering, The Ohio State University, Columbus, Ohio, USA
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, Ohio, USA
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17
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Mauri E, Rossi F, Sacchetti A. Simple and efficient strategy to synthesize PEG-aldehyde derivatives for hydrazone orthogonal chemistry. POLYM ADVAN TECHNOL 2015. [DOI: 10.1002/pat.3578] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Emanuele Mauri
- Department of Chemistry, Materials and Chemical Engineering “Giulio Natta”; Politecnico di Milano; via Mancinelli 7 20131 Milan Italy
| | - Filippo Rossi
- Department of Chemistry, Materials and Chemical Engineering “Giulio Natta”; Politecnico di Milano; via Mancinelli 7 20131 Milan Italy
| | - Alessandro Sacchetti
- Department of Chemistry, Materials and Chemical Engineering “Giulio Natta”; Politecnico di Milano; via Mancinelli 7 20131 Milan Italy
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18
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Pina S, Oliveira JM, Reis RL. Natural-based nanocomposites for bone tissue engineering and regenerative medicine: a review. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2015; 27:1143-1169. [PMID: 25580589 DOI: 10.1002/adma.201403354] [Citation(s) in RCA: 507] [Impact Index Per Article: 56.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2014] [Revised: 10/14/2014] [Indexed: 06/04/2023]
Abstract
Tissue engineering and regenerative medicine has been providing exciting technologies for the development of functional substitutes aimed to repair and regenerate damaged tissues and organs. Inspired by the hierarchical nature of bone, nanostructured biomaterials are gaining a singular attention for tissue engineering, owing their ability to promote cell adhesion and proliferation, and hence new bone growth, compared with conventional microsized materials. Of particular interest are nanocomposites involving biopolymeric matrices and bioactive nanosized fillers. Biodegradability, high mechanical strength, and osteointegration and formation of ligamentous tissue are properties required for such materials. Biopolymers are advantageous due to their similarities with extracellular matrices, specific degradation rates, and good biological performance. By its turn, calcium phosphates possess favorable osteoconductivity, resorbability, and biocompatibility. Herein, an overview on the available natural polymer/calcium phosphate nanocomposite materials, their design, and properties is presented. Scaffolds, hydrogels, and fibers as biomimetic strategies for tissue engineering, and processing methodologies are described. The specific biological properties of the nanocomposites, as well as their interaction with cells, including the use of bioactive molecules, are highlighted. Nanocomposites in vivo studies using animal models are also reviewed and discussed.
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Affiliation(s)
- Sandra Pina
- 3B's Research Group - Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, 4806-909, Caldas das Taipas, Guimarães, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
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19
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Choi Y, Cox C, Lally K, Li Y. The strategy and method in modulating finger regeneration. Regen Med 2015; 9:231-42. [PMID: 24750063 DOI: 10.2217/rme.13.98] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The tip of the human finger can regenerate if the amputation is distal to the nail bed, usually in young children. Studies in regeneration of rodent digits have shown that regeneration occurs if the amputation is distal to the mid-third phalanx for certain ages. The digit contains many different components, such as muscle, tendon, bone, skin, nerves and blood vessels, which must all be regrown in the proper location in order to restore functionality. The mechanism behind the complex healing/regeneration processes is still under investigation; however, improvements in injured finger regeneration have been gradually developing in animal models over the past few years. This review discusses a few strategies and methods to possibly enhance digit regeneration beyond current natural limits, focusing on aspects including scarless wound healing, cell-based treatments, tissue engineering and electrical stimulation.
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Affiliation(s)
- Yohan Choi
- Children's Regenerative Medicine, Department of Pediatric Surgery, University of Texas Medical School at Houston, TX 77030, USA
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20
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Gibbs DMR, Black CRM, Dawson JI, Oreffo ROC. A review of hydrogel use in fracture healing and bone regeneration. J Tissue Eng Regen Med 2014; 10:187-98. [DOI: 10.1002/term.1968] [Citation(s) in RCA: 98] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Revised: 10/13/2014] [Accepted: 10/20/2014] [Indexed: 01/01/2023]
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21
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Kettenberger U, Ston J, Thein E, Procter P, Pioletti DP. Does locally delivered Zoledronate influence peri-implant bone formation? – Spatio-temporal monitoring of bone remodeling in vivo. Biomaterials 2014; 35:9995-10006. [DOI: 10.1016/j.biomaterials.2014.09.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Accepted: 09/01/2014] [Indexed: 11/27/2022]
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22
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Stenfelt S, Hulsart-Billström G, Gedda L, Bergman K, Hilborn J, Larsson S, Bowden T. Pre-incubation of chemically crosslinked hyaluronan-based hydrogels, loaded with BMP-2 and hydroxyapatite, and its effect on ectopic bone formation. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2014; 25:1013-1023. [PMID: 24477873 DOI: 10.1007/s10856-014-5147-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2013] [Accepted: 01/10/2014] [Indexed: 06/03/2023]
Abstract
The effects of pre-incubation of hyaluronan hydrogels, for different lengths of time after the initiation of chemical crosslinking and prior to injection, were explored both by investigating the in vitro BMP-2 release kinetics from the hydrogel and by studying the ectopic bone formation in rats. From the curing profile, obtained from rheological analysis, appropriate pre-incubation times (1 min, 5 h and 3 days) were selected, to prepare slightly, moderately and fully cured hydrogels. Comparable release profiles were observed for all three test groups in vitro. Furthermore, radiography, pQCT and histology of the explanted grafts showed cancellous bone formation in all groups after 5 weeks in vivo. However, longer pre-incubation times gave rise to an increase in bone volume, but a decrease in bone density. Moreover, the 5 h and the 3 days grafts appeared to be more ordered and resistant to deformation from the surrounding tissue than the 1 min grafts. The observed variations in mechanical and biological properties could potentially be used to adapt the treatment for a specific indication.
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Affiliation(s)
- Sonya Stenfelt
- Department of Chemistry - Ångström Laboratory, Uppsala University, Box 538, 751 21, Uppsala, Sweden
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23
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Gentile P, Chiono V, Carmagnola I, Hatton PV. An overview of poly(lactic-co-glycolic) acid (PLGA)-based biomaterials for bone tissue engineering. Int J Mol Sci 2014; 15:3640-59. [PMID: 24590126 PMCID: PMC3975359 DOI: 10.3390/ijms15033640] [Citation(s) in RCA: 847] [Impact Index Per Article: 84.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2014] [Revised: 02/14/2014] [Accepted: 02/20/2014] [Indexed: 01/09/2023] Open
Abstract
Poly(lactic-co-glycolic) acid (PLGA) has attracted considerable interest as a base material for biomedical applications due to its: (i) biocompatibility; (ii) tailored biodegradation rate (depending on the molecular weight and copolymer ratio); (iii) approval for clinical use in humans by the U.S. Food and Drug Administration (FDA); (iv) potential to modify surface properties to provide better interaction with biological materials; and (v) suitability for export to countries and cultures where implantation of animal-derived products is unpopular. This paper critically reviews the scientific challenge of manufacturing PLGA-based materials with suitable properties and shapes for specific biomedical applications, with special emphasis on bone tissue engineering. The analysis of the state of the art in the field reveals the presence of current innovative techniques for scaffolds and material manufacturing that are currently opening the way to prepare biomimetic PLGA substrates able to modulate cell interaction for improved substitution, restoration, or enhancement of bone tissue function.
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Affiliation(s)
- Piergiorgio Gentile
- School of Clinical Dentistry, University of Sheffield, 19 Claremont Crescent, Sheffield S10 2TA, UK.
| | - Valeria Chiono
- Politecnico di Torino, Department of Mechanical and Aerospace Engineering, Corso Duca degli Abruzzi 24, Turin 10129, Italy.
| | - Irene Carmagnola
- Politecnico di Torino, Department of Mechanical and Aerospace Engineering, Corso Duca degli Abruzzi 24, Turin 10129, Italy.
| | - Paul V Hatton
- School of Clinical Dentistry, University of Sheffield, 19 Claremont Crescent, Sheffield S10 2TA, UK.
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24
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25
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Kisiel M, Klar AS, Ventura M, Buijs J, Mafina MK, Cool SM, Hilborn J. Complexation and sequestration of BMP-2 from an ECM mimetic hyaluronan gel for improved bone formation. PLoS One 2013; 8:e78551. [PMID: 24167632 PMCID: PMC3805527 DOI: 10.1371/journal.pone.0078551] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2013] [Accepted: 09/20/2013] [Indexed: 11/23/2022] Open
Abstract
Bone morphogenetic protein-2 (BMP-2) is considered a promising adjuvant for the treatment of skeletal non-union and spinal fusion. However, BMP-2 delivery in a conventional collagen scaffold necessitates a high dose to achieve an efficacious outcome. To lower its effective dose, we precomplexed BMP-2 with the glycosaminoglycans (GAGs) dermatan sulfate (DS) or heparin (HP), prior to loading it into a hyaluronic acid (HA) hydrogel. In vitro release studies showed that BMP-2 precomplexed with DS or HP had a prolonged delivery compared to without GAG. BMP-2-DS complexes achieved a slightly faster release in the first 24 h than HP; however, both delivered BMP-2 for an equal duration. Analysis of the kinetic interaction between BMP-2 and DS or HP showed that HP had approximately 10 times higher affinity for BMP-2 than DS, yet it equally stabilized the protein, as determined by alkaline phosphatase activity. Ectopic bone formation assays at subcutaneous sites in rats demonstrated that HA hydrogel-delivered BMP-2 precomplexed with GAG induced twice the volume of bone compared with BMP-2 delivered uncomplexed to GAG.
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Affiliation(s)
- Marta Kisiel
- Division of Polymers Chemistry, Department of Chemistry-ångström, Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Agnieszka S. Klar
- Tissue Biology Research Unit, Department of Surgery, University Children’s Hospital, Zurich, Switzerland
| | - Manuela Ventura
- Biomaterials, Radboud University Nijmegen Medical Centre, Nijmegen, Netherlands
| | - Jos Buijs
- Science for Life Laboratory, GE Healthcare, Stockholm, Sweden
| | - Marc-Krystelle Mafina
- School of Engineering and Materials Science, Queen Mary University of London, London, UK
| | - Simon M. Cool
- Glycotherapeutics Group, Institute of Medical Biology, A*STAR, Singapore, Singapore, Singapore
| | - Jöns Hilborn
- Division of Polymers Chemistry, Department of Chemistry-ångström, Science for Life Laboratory, Uppsala University, Uppsala, Sweden
- * E-mail:
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26
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Altgärde N, Nilebäck E, de Battice L, Pashkuleva I, Reis RL, Becher J, Möller S, Schnabelrauch M, Svedhem S. Probing the biofunctionality of biotinylated hyaluronan and chondroitin sulfate by hyaluronidase degradation and aggrecan interaction. Acta Biomater 2013; 9:8158-66. [PMID: 23747326 DOI: 10.1016/j.actbio.2013.05.031] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2013] [Revised: 05/07/2013] [Accepted: 05/28/2013] [Indexed: 11/17/2022]
Abstract
Molecular interactions involving glycosaminoglycans (GAGs) are important for biological processes in the extracellular matrix (ECM) and at cell surfaces, and also in biotechnological applications. Enzymes in the ECM constantly modulate the molecular structure and the amount of GAGs in our tissues. Specifically, the changeable sulfation patterns of many GAGs are expected to be important in interactions with proteins. Biotinylation is a convenient method for immobilizing molecules to surfaces. When studying interactions at the molecular, cell and tissue level, the native properties of the immobilized molecule, i.e. its biofunctionality, need to be retained upon immobilization. Here, the GAGs hyaluronan (HA) and chondroitin sulfate (CS), and synthetically sulfated derivatives of the two, were immobilized using biotin-streptavidin binding. The degree of biotinylation and the placement of biotin groups (end-on/side-on) were varied. The introduction of biotin groups could have unwanted effects on the studied molecule, but this aspect that is not always straightforward to evaluate. Hyaluronidase, an enzyme that degrades HA and CS in the ECM, was investigated as a probe to evaluate the biofunctionality of the immobilized GAGs, using both quartz crystal microbalance and high-performance liquid chromatography. Our results showed that end-on biotinylated HA was efficiently degraded by hyaluronidase, whereas already a low degree of side-on biotinylation destroyed the degrading ability of the enzyme. Synthetically introduced sulfate groups also had this effect. Hence hyaluronidase degradation is a cheap and easy way to investigate how molecular function is influenced by the introduced functional groups. Binding experiments with the proteoglycan aggrecan emphasized the influence of protein size and surface orientation of the GAGs for in-depth studies of GAG behavior.
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Affiliation(s)
- Noomi Altgärde
- Department of Applied Physics, Chalmers University of Technology, 412 96 Göteborg, Sweden.
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27
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Hulsart-Billström G, Yuen PK, Marsell R, Hilborn J, Larsson S, Ossipov D. Bisphosphonate-Linked Hyaluronic Acid Hydrogel Sequesters and Enzymatically Releases Active Bone Morphogenetic Protein-2 for Induction of Osteogenic Differentiation. Biomacromolecules 2013; 14:3055-63. [DOI: 10.1021/bm400639e] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Gry Hulsart-Billström
- Department
of Surgical Sciences, Orthopedics, Uppsala University Hospital, Uppsala, SE 751 85, Sweden
| | - Pik Kwan Yuen
- Department
of Surgical Sciences, Orthopedics, Uppsala University Hospital, Uppsala, SE 751 85, Sweden
| | - Richard Marsell
- Department
of Surgical Sciences, Orthopedics, Uppsala University Hospital, Uppsala, SE 751 85, Sweden
| | - Jöns Hilborn
- Science
for Life
Laboratory, Division of Polymer Chemistry, Department
of Chemistry-Ångström, Uppsala University, Uppsala, SE 751 21, Sweden
| | - Sune Larsson
- Department
of Surgical Sciences, Orthopedics, Uppsala University Hospital, Uppsala, SE 751 85, Sweden
| | - Dmitri Ossipov
- Science
for Life
Laboratory, Division of Polymer Chemistry, Department
of Chemistry-Ångström, Uppsala University, Uppsala, SE 751 21, Sweden
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28
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Kisiel M, Klar AS, Martino MM, Ventura M, Hilborn J. Evaluation of injectable constructs for bone repair with a subperiosteal cranial model in the rat. PLoS One 2013; 8:e71683. [PMID: 23967235 PMCID: PMC3742484 DOI: 10.1371/journal.pone.0071683] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2012] [Accepted: 07/08/2013] [Indexed: 11/19/2022] Open
Abstract
While testing regenerative medicine strategies, the use of animal models that match the research questions and that are related to clinical translation is crucial. During the initial stage of evaluating new strategies for bone repair, the main goal is to state whether the strategies efficiently induce the formation of new bone tissue at an orthotopic site. Here, we present a subperiosteal model in rat calvaria that allow the evaluation of a broad range of approaches including bone augmentation, replacement and regeneration. The model is a fast to perform, minimally invasive, and has clearly defined control groups. The procedure enables to evaluate the outcomes quantitatively using micro-computed tomography and qualitatively by histology and immunohistochemistry. We established this new model, using bone morphogenetic protein-2 as an osteoinductive factor and hyaluronic acid hydrogel as injectable biomaterial. We showed that this subperiosteal cranial model offers a minimally invasive and promising solution for a rapid initial evaluation of injectables for bone repair. We believe that this approach could be a powerful platform for orthopedic research and regenerative medicine.
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Affiliation(s)
- Marta Kisiel
- Division of Polymer Chemistry, Department of Chemistry-Ångström, Sciences Life Laboratory, Uppsala University, Uppsala, Sweden
- Medical Faculty, University Hospital Akademiska, Uppsala, Sweden
| | - Agnieszka S. Klar
- Tissue Biology Research Unit, Department of Surgery, University Children’s Hospital, Zurich, Switzerland
| | - Mikaël M. Martino
- Laboratory of Host Defense, WPI Immunology Frontier Research Center (IFReC), Osaka University, Osaka, Japan
| | - Manuela Ventura
- Biomaterials, Radboud University, Nijmegen Medical Centre, Nijmegen, The Netherlands
| | - Jöns Hilborn
- Division of Polymer Chemistry, Department of Chemistry-Ångström, Sciences Life Laboratory, Uppsala University, Uppsala, Sweden
- * E-mail:
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29
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Berts I, Fragneto G, Hilborn J, Rennie AR. Tuning the density profile of surface-grafted hyaluronan and the effect of counter-ions. THE EUROPEAN PHYSICAL JOURNAL. E, SOFT MATTER 2013; 36:70. [PMID: 23852575 DOI: 10.1140/epje/i2013-13070-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2012] [Revised: 12/18/2012] [Accepted: 12/19/2012] [Indexed: 06/02/2023]
Abstract
The present paper investigates the structure and composition of grafted sodium hyaluronan at a solid-liquid interface using neutron reflection. The solvated polymer at the surface could be described with a density profile that decays exponentially towards the bulk solution. The density profile of the polymer varied depending on the deposition protocol. A single-stage deposition resulted in denser polymer layers, while layers created with a two-stage deposition process were more diffuse and had an overall lower density. Despite the diffuse density profile, two-stage deposition leads to a higher surface excess. Addition of calcium ions causes a strong collapse of the sodium hyaluronan chains, increasing the polymer density near the surface. This effect is more pronounced on the sample prepared by two-stage deposition due to the initial less dense profile. This study provides an understanding at a molecular level of how surface functionalization alters the structure and how surface layers respond to changes in calcium ions in the solvent.
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Affiliation(s)
- Ida Berts
- Science for Life Laboratory, Department of Chemistry - Ångström Laboratory, Uppsala University, Box 538, 751 21 Uppsala, Sweden.
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30
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Wang S, Oommen OP, Yan H, Varghese OP. Mild and Efficient Strategy for Site-Selective Aldehyde Modification of Glycosaminoglycans: Tailoring Hydrogels with Tunable Release of Growth Factor. Biomacromolecules 2013; 14:2427-32. [DOI: 10.1021/bm400612h] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Shujiang Wang
- Polymer Chemistry Division,
Department of Chemistry,
Ångström Laboratory, Uppsala University, Box 538, 751 21 Uppsala, Sweden
| | - Oommen P. Oommen
- Polymer Chemistry Division,
Department of Chemistry,
Ångström Laboratory, Uppsala University, Box 538, 751 21 Uppsala, Sweden
| | - Hongji Yan
- Polymer Chemistry Division,
Department of Chemistry,
Ångström Laboratory, Uppsala University, Box 538, 751 21 Uppsala, Sweden
| | - Oommen P. Varghese
- Polymer Chemistry Division,
Department of Chemistry,
Ångström Laboratory, Uppsala University, Box 538, 751 21 Uppsala, Sweden
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31
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Schizas N, Rojas R, Kootala S, Andersson B, Pettersson J, Hilborn J, Hailer NP. Hyaluronic acid-based hydrogel enhances neuronal survival in spinal cord slice cultures from postnatal mice. J Biomater Appl 2013; 28:825-36. [DOI: 10.1177/0885328213483636] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Numerous biomaterials based on extracellular matrix-components have been developed. It was our aim to investigate whether a hyaluronic acid–based hydrogel improves neuronal survival and tissue preservation in organotypic spinal cord slice cultures. Organotypic spinal cord slice cultures were cultured for 4 days in vitro (div), either on hyaluronic acid–based hydrogel (hyaluronic acid–gel group), collagen gel (collagen group), directly on polyethylene terephthalate membrane inserts (control group), or in the presence of soluble hyaluronic acid (soluble hyaluronic acid group). Cultures were immunohistochemically stained against neuronal antigen NeuN and analyzed by confocal laser scanning microscopy. Histochemistry for choline acetyltransferance, glial fibrillary acidic protein, and Griffonia simplicifolia isolectin B4 followed by quantitative analysis was performed to assess motorneurons and different glial populations. Confocal microscopic analysis showed a 4-fold increase in the number of NeuN-positive neurons in the hyaluronic acid–gel group compared to both collagen ( p < 0.001) and control groups ( p < 0.001). Compared to controls, organotypic spinal cord slice cultures maintained on hyaluronic acid–based hydrogel showed 5.9-fold increased survival of choline acetyltransferance-positive motorneurons ( p = 0.008), 2-fold more numerous resting microglial cells in the white matter ( p = 0.031), and a 61.4% reduction in the number of activated microglial cells within the grey matter ( p = 0.05). Hyaluronic acid–based hydrogel had a shear modulus (G′) of ≈1200 Pascals (Pa), which was considerably higher than the ≈25 Pa measured for collagen gel. Soluble hyaluronic acid failed to improve tissue preservation. In conclusion, hyaluronic acid–based hydrogel improves neuronal and – most notably – motorneuron survival in organotypic spinal cord slice cultures and microglial activation is limited. The positive effects of hyaluronic acid–based hydrogel may at least in part be due to its mechanical properties.
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Affiliation(s)
- Nikos Schizas
- The SpineLab, Institute of Surgical Sciences, Department of Orthopaedics, Uppsala University, Uppsala, Sweden
| | - Ramiro Rojas
- Division of Polymer Chemistry, Department of Materials Chemistry, The Ångström Laboratory, Uppsala University, Uppsala, Sweden
| | - Sujit Kootala
- Division of Polymer Chemistry, Department of Materials Chemistry, The Ångström Laboratory, Uppsala University, Uppsala, Sweden
| | - Brittmarie Andersson
- The SpineLab, Institute of Surgical Sciences, Department of Orthopaedics, Uppsala University, Uppsala, Sweden
| | - Jennie Pettersson
- The SpineLab, Institute of Surgical Sciences, Department of Orthopaedics, Uppsala University, Uppsala, Sweden
| | - Jons Hilborn
- Division of Polymer Chemistry, Department of Materials Chemistry, The Ångström Laboratory, Uppsala University, Uppsala, Sweden
| | - Nils P Hailer
- The SpineLab, Institute of Surgical Sciences, Department of Orthopaedics, Uppsala University, Uppsala, Sweden
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32
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Hulsart-Billström G, Piskounova S, Gedda L, Andersson BM, Bergman K, Hilborn J, Larsson S, Bowden T. Morphological differences in BMP-2-induced ectopic bone between solid and crushed hyaluronan hydrogel templates. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2013; 24:1201-9. [PMID: 23392969 DOI: 10.1007/s10856-013-4877-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2012] [Accepted: 01/22/2013] [Indexed: 05/16/2023]
Abstract
The possibility to affect bone formation by using crushed versus solid hydrogels as carriers for bone morphogenetic protein 2 (BMP-2) was studied. Hydrogels, based on chemical crosslinking between hyaluronic acid and poly(vinyl alcohol) derivatives, were loaded with BMP-2 and hydroxyapatite. Crushed and solid forms of the gels were analyzed both in vitro via a release study using ¹²⁵I radioactive labeling of BMP-2, and in vivo in a subcutaneous ectopic bone model in rats. Dramatically different morphologies were observed for the ectopic bone formed in vivo in the two types of gels, even though virtually identical release profiles were observed in vitro. Solid hydrogels induced formation of a dense bone shell around non-degraded hydrogel, while crushed hydrogels demonstrated a uniform bone formation throughout the entire sample. These results suggest that by crushing the hydrogel, the construct's three-dimensional network becomes disrupted. This could expose unreacted functional groups, making the fragment's surfaces reactive and enable limited chemical fusion between the crushed hydrogel fragments, leading to similar in vitro release profiles. However, in vivo these interactions could be broken by enzymatic activity, creating a macroporous structure that allows easier cell infiltration, thus, facilitating bone formation.
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Šedová P, Buffa R, Kettou S, Huerta-Angeles G, Hermannová M, Leierová V, Šmejkalová D, Moravcová M, Velebný V. Preparation of hyaluronan polyaldehyde—a precursor of biopolymer conjugates. Carbohydr Res 2013; 371:8-15. [DOI: 10.1016/j.carres.2013.01.025] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2012] [Revised: 01/09/2013] [Accepted: 01/11/2013] [Indexed: 10/27/2022]
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Martínez-Álvarez C, González-Meli B, Berenguer-Froehner B, Paradas-Lara I, López-Gordillo Y, Rodríguez-Bobada C, González P, Chamorro M, Arias P, Hilborn J, Casado-Gómez I, Martínez-Sanz E. Injection and adhesion palatoplasty: a preliminary study in a canine model. J Surg Res 2013; 183:654-62. [PMID: 23541812 DOI: 10.1016/j.jss.2013.03.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2013] [Revised: 02/26/2013] [Accepted: 03/01/2013] [Indexed: 11/30/2022]
Abstract
BACKGROUND Raising mucoperiosteal flaps in traditional palatoplasty impairs mid-facial growth. Hyaluronic acid-based hydrogels have been successfully tested for minimally invasive craniofacial bone generation in vivo as carriers of bone morphogenetic protein-2 (BMP-2). We aimed to develop a novel flapless technique for cleft palate repair by injecting a BMP-2 containing hydrogel. MATERIAL AND METHODS Dog pups with congenital cleft palate were either non-treated (n=4) or treated with two-flap palatoplasty (n=6) or with the proposed injection/adhesion technique (n=5). The experimental approach was to inject a hyaluronic acid-based hydrogel containing hydroxyapatite and BMP-2 subperiosteally at the cleft palate margins of pups aged six weeks. At week ten, a thin strip of the medial edge mucosa was removed and the margins were closed directly. Occlusal photographs and computed tomography (CT) scans were obtained up to week 20. RESULTS Four weeks after the gel injection the cleft palate margins had reached the midline and engineered bone had enlarged the palatal bones. Removal of the medial edge mucosa and suturing allowed complete closure of the cleft. Compared to traditional palatoplasty, the injection/adhesion technique was easier, and the post-surgical recovery was faster. CT on week 20 revealed some overlapping or "bending" of palatal shelves in the two-flap repair group, which was not observed in the experimental nor control groups. CONCLUSION A minimally invasive technique for cleft palate repair upon injectable scaffolds in a dog model of congenital cleft palate is feasible. Results suggest better growth of palatal bones. This represents an attractive clinical alternative to traditional palatoplasty for cleft palate patients.
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Affiliation(s)
- Concepción Martínez-Álvarez
- Departamento de Anatomía y Embriología Humana I, Facultad de Medicina, Facultad de Odontología, Universidad Complutense de Madrid, Madrid, Spain.
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Dreifke MB, Ebraheim NA, Jayasuriya AC. Investigation of potential injectable polymeric biomaterials for bone regeneration. J Biomed Mater Res A 2013; 101:2436-47. [PMID: 23401336 DOI: 10.1002/jbm.a.34521] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2012] [Revised: 10/09/2012] [Accepted: 10/29/2012] [Indexed: 01/12/2023]
Abstract
This article reviews the potential injectable polymeric biomaterial scaffolds currently being investigated for application in bone tissue regeneration. Two types of injectable biomaterial scaffolds are focused in this review, including injectable microspheres and injectable gels. The injectable microspheres section covers several polymeric materials, including poly(L-lactide-co-glycolide)-PLGA, poly(propylene fumarate), and chitosan. The injectable gel section covers alginate gels, hyaluronan hydrogels, poly(ethylene-glycol)-PEG hydrogels, and PEG-PLGA copolymer hydrogels. This review focuses on the effect of cellular behavior in vitro and in vivo in terms of material properties of polymers, such as biodegradation, biocompatibility, porosity, microsphere size, and cross-linking nature. Injectable polymeric biomaterials offer a major advantage for orthopedic applications by allowing the ability to use noninvasive or minimally invasive treatment methods. Therefore, combining injectable polymeric biomaterial scaffolds with cells have a significant potential to treat orthopedic bone defects, including spine fusion, and craniofacial and periodontal defects.
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Affiliation(s)
- Michael B Dreifke
- Department of Orthopaedic Surgery, The University of Toledo, College of Medicine, Toledo, Ohio 43614, USA
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Rahman CV, Kuhn G, White LJ, Kirby GTS, Varghese OP, McLaren JS, Cox HC, Rose FRAJ, Müller R, Hilborn J, Shakesheff KM. PLGA/PEG-hydrogel composite scaffolds with controllable mechanical properties. J Biomed Mater Res B Appl Biomater 2013; 101:648-55. [DOI: 10.1002/jbm.b.32867] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2012] [Revised: 10/31/2012] [Accepted: 11/11/2012] [Indexed: 11/10/2022]
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Yang X, Dogan I, Pannala VR, Kootala S, Hilborn J, Ossipov D. A hyaluronic acid–camptothecin nanoprodrug with cytosolic mode of activation for targeting cancer. Polym Chem 2013. [DOI: 10.1039/c3py00402c] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Aulin C, Jensen-Waern M, Ekman S, Hägglund M, Engstrand T, Hilborn J, Hedenqvist P. Cartilage repair of experimentally 11 induced osteochondral defects in New Zealand White rabbits. Lab Anim 2013; 47:58-65. [DOI: 10.1177/0023677212473716] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Articular cartilage has a limited capacity for self-repair in adult humans, and methods used to stimulate regeneration often result in re-growth of fibrous cartilage, which has lower durability. No current treatment option can provide complete repair. The possibility of growth factor delivery into the joint for cartilage regeneration after injury would be an attractive treatment option. A full thickness osteochondral defect of 4 mm in diameter and 2 mm deep was created by mechanical drilling in the medial femoral condyle in 20 female adult New Zealand White rabbits. In an attempt to improve regeneration a hyaluronic hydrogel system, with or without bone morphogenetic protein-2 (BMP-2) was delivered intraarticularly. The contralateral joint defect was treated with saline as control. Throughout the study, rabbits were clinically examined and after 12 ( n = 6) or 24 ( n = 9) weeks, the rabbits were euthanized and the joints evaluated by histology. The defects healed with fibrocartilage like tissue, and the filling of the defects ranged from less than 25% to complete. The healing of the defects varied both inter- and intra-group wise. Treatment with hyaluronan gel with or without BMP-2 had no effect on cartilage regeneration compared with controls. Instead, severe ectopic bone formation was found in seven joints treated with BMP-2. In conclusion, the present study shows that neither treatment with hyaluronic gel alone, nor in combination with BMP-2, improves the healing of an induced cartilage defect in rabbits. It further shows that BMP-2 can induce ectopic bone formation, which severely affects the functionality of the joint.
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Affiliation(s)
- C Aulin
- Department of Chemistry, Ångström Laboratory, Polymer Chemistry, Uppsala University, SE-751 21 Uppsala, Sweden
- Department of Medicine, Rheumatology Unit, Karolinska Institute, SE-171 76 Stockholm, Sweden
| | - M Jensen-Waern
- Department of Clinical Sciences, Comparative Physiology and Medicine, Swedish University of Agricultural Sciences, SE-750 07 Uppsala, Sweden
| | - S Ekman
- Department of Biomedicine and Veterinary Public Health, Division of Pathology, Pharmacology and Toxicology, Swedish University of Agricultural Sciences, SE-750 07 Uppsala, Sweden
| | - M Hägglund
- Department of Clinical Sciences, Comparative Physiology and Medicine, Swedish University of Agricultural Sciences, SE-750 07 Uppsala, Sweden
| | - T Engstrand
- Department of Chemistry, Ångström Laboratory, Polymer Chemistry, Uppsala University, SE-751 21 Uppsala, Sweden
- Stockholm Craniofacial Centre, Department of Reconstructive Plastic Surgery, Karolinska University Hospital, SE-171 76 Stockholm, Sweden
| | - J Hilborn
- Department of Chemistry, Ångström Laboratory, Polymer Chemistry, Uppsala University, SE-751 21 Uppsala, Sweden
| | - P Hedenqvist
- Department of Clinical Sciences, Comparative Physiology and Medicine, Swedish University of Agricultural Sciences, SE-750 07 Uppsala, Sweden
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Berts I, Gerelli Y, Hilborn J, Rennie AR. Structure of polymer and particle aggregates in hydrogel composites. ACTA ACUST UNITED AC 2012. [DOI: 10.1002/polb.23230] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Hulsart-Billström G, Bergman K, Andersson B, Hilborn J, Larsson S, Jonsson KB. A uni-cortical femoral defect model in the rat: evaluation using injectable hyaluronan hydrogel as a carrier for bone morphogenetic protein-2. J Tissue Eng Regen Med 2012; 9:799-807. [PMID: 23225778 DOI: 10.1002/term.1655] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2012] [Revised: 08/10/2012] [Accepted: 10/21/2012] [Indexed: 11/10/2022]
Abstract
The development of biomaterial for bone regeneration requires animal models that are reliable and designed to mimic clinically relevant situations. We have previously investigated hydrogels comprised of modified hyaluronic acid and polyvinyl alcohol in models of ectopic bone formation. This hydrogel induces bone regeneration when loaded with bone morphogenetic proteins (BMPs). To allow further optimization of hydrogels, we developed a new, femoral, non-critical-sized cortical defect model. In the rat femur, we drilled standardized, elongated unilateral cortical defects that did not require stabilization and that could be created bilaterally to allow paired comparisons of biomaterials. After optimizing the defect size, subsequent stress fractures occurred in only 8% and the defect healed partially over the 40 day study period. In a time-course experiment, we treated bone defects with the previously studied hyaluronan hydrogel loaded with 10 µg hydroxyapatite and 6 µg BMP-2. The shape of the defect allowed controlled containment of the material within the defect. The defect in the right leg was left untreated, while the left defect was filled with 40 µl of the BMP hydrogel. As determined by pQCT analysis, the treated defects had a higher bone mineral content, bone area and bone density than control defects. The relative difference was greatest between the groups at 10 and 20 days and diminished as the defect healed in the untreated legs. We conclude that this animal model allows facile and rapid screening of biomaterials for bone regeneration in cortical femoral defects without requiring external fixation.
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Affiliation(s)
- Gry Hulsart-Billström
- Department of Surgical Sciences, Unit of Orthopaedics, Uppsala University, Uppsala, Sweden
| | - Kristoffer Bergman
- Department of Materials Chemistry, Ångström Laboratory Uppsala University, Uppsala, Sweden
| | - Brittmarie Andersson
- Department of Surgical Sciences, Unit of Orthopaedics, Uppsala University, Uppsala, Sweden
| | - Jöns Hilborn
- Department of Materials Chemistry, Ångström Laboratory Uppsala University, Uppsala, Sweden
| | - Sune Larsson
- Department of Surgical Sciences, Unit of Orthopaedics, Uppsala University, Uppsala, Sweden
| | - Kenneth B Jonsson
- Department of Surgical Sciences, Unit of Orthopaedics, Uppsala University, Uppsala, Sweden
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Rubert M, Alonso-Sande M, Monjo M, Ramis JM. Evaluation of Alginate and Hyaluronic Acid for Their Use in Bone Tissue Engineering. Biointerphases 2012. [DOI: 10.1007/s13758-012-0044-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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42
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Kisiel M, Martino MM, Ventura M, Hubbell JA, Hilborn J, Ossipov DA. Improving the osteogenic potential of BMP-2 with hyaluronic acid hydrogel modified with integrin-specific fibronectin fragment. Biomaterials 2012; 34:704-12. [PMID: 23103154 DOI: 10.1016/j.biomaterials.2012.10.015] [Citation(s) in RCA: 91] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2012] [Accepted: 10/05/2012] [Indexed: 01/08/2023]
Abstract
While human bone morphogenetic protein-2 (rhBMP-2) is a promising growth factor for bone regeneration, its clinical efficacy has recently shown to be below expectation. In order to improve the clinical translation of rhBMP-2, there exists strong motivation to engineer better delivery systems. Hyaluronic acid (HA) hydrogel is a suitable carrier for the delivery of rhBMP-2, but a major limitation of this scaffold is its low cell adhesive properties. In this study, we have determined whether covalent grafting of an integrin-specific ligands into HA hydrogel could improve cell attachment and further enhance the osteogenic potential of rhBMP-2. A structurally stabilized fibronectin (FN) fragment containing the major integrin-binding domain of full-length FN (FN III9*-10) was engineered, in order to be incorporated into HA hydrogel. Compared to non-functionalized HA hydrogel, HA-FN hydrogel remarkably improved the capacity of the material to support mesenchymal stem cell attachment and spreading. In an ectopic bone formation model in the rat, delivery of rhBMP-2 with HA-FN hydrogel resulted in the formation of twice as much bone with better organization of collagen fibers compared to delivering the growth factor in non-functionalized HA hydrogel. This engineered hydrogel carrier for rhBMP-2 can be relevant in clinical bone repair.
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Affiliation(s)
- Marta Kisiel
- Division of Polymer Chemistry, Department of Chemistry-Ångström Laboratory, Science for Life Laboratory, Uppsala University, Uppsala, Sweden
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43
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Neovius E, Lemberger M, Docherty Skogh AC, Hilborn J, Engstrand T. Alveolar bone healing accompanied by severe swelling in cleft children treated with bone morphogenetic protein-2 delivered by hydrogel. J Plast Reconstr Aesthet Surg 2012; 66:37-42. [PMID: 22980542 DOI: 10.1016/j.bjps.2012.08.015] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2012] [Revised: 07/22/2012] [Accepted: 08/16/2012] [Indexed: 11/16/2022]
Abstract
BACKGROUND The use of osteoinductive growth factors may be preferable for alveolar cleft repair because it eliminates the need of bone harvesting. In the present prospective randomised pilot study, patients with alveolar clefts were treated with either bone morphogenetic protein 2 (BMP-2) delivered by a hyaluronan-based hydrogel or autologous bone from the iliac crest. METHODS Seven patients with cleft lip or cleft lip and palate were included. Computed tomography (CT) was performed preoperatively and 6 months postoperatively. The residual cleft volume was compared with the initial volume. Surgery time, bleeding and hospital stay were compared between the two groups. RESULTS Four patients were randomised to treatment with BMP-2. A low BMP-2 concentration of 50 μg ml(-1) hydrogel did not induce bone formation in treated patients (n = 2) after 6 months, as seen by CT scans. Therefore, the BMP-2 concentration was raised to 250 μg ml(-1) hydrogel in the subsequently randomised patients (n = 2). Bone formation with volume ratio of 59% and 33% was here verified by CT scans after 6 months. However, a severe gingival swelling appeared during the first week in patients treated with higher BMP-2 doses. In the autologous bone group (n = 3), the volume ratio was 29%, 48%, and 69%. Mean surgery time was 100 min in the BMP-2 group and 123 min in the autologous bone group. The mean hospital stay was 2.75 and 3.33 days, respectively. CONCLUSIONS BMP-2 at a concentration of 250 μg ml(-1) delivered by a hydrogel can be used to treat alveolar cleft defects with good bone quantity and comparable to autologous bone grafts. However, severe gingival swelling may limit the use of BMP-2 for these patients. Therefore, the study was prematurely closed.
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Affiliation(s)
- E Neovius
- Stockholm Craniofacial Centre, Department of Reconstructive Plastic Surgery, Karolinska University Hospital, Sweden
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44
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Martínez-Sanz E, Varghese OP, Kisiel M, Engstrand T, Reich KM, Bohner M, Jonsson KB, Kohler T, Müller R, Ossipov DA, Hilborn J. Minimally invasive mandibular bone augmentation using injectable hydrogels. J Tissue Eng Regen Med 2012; 6 Suppl 3:s15-23. [DOI: 10.1002/term.1593] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2011] [Revised: 03/20/2012] [Accepted: 07/10/2012] [Indexed: 01/08/2023]
Affiliation(s)
| | - Oommen P. Varghese
- Polymer Chemistry, Department of Chemistry - Ångström Laboratory, Science for Life Laboratory; Uppsala University; Sweden
| | - Marta Kisiel
- Polymer Chemistry, Department of Chemistry - Ångström Laboratory, Science for Life Laboratory; Uppsala University; Sweden
| | | | | | - Marc Bohner
- Department of Basic and Applied Research; RMS Foundation; Bettlach; Switzerland
| | - Kenneth B. Jonsson
- Department of Surgical Sciences, Unit of Orthopaedic Surgery; Uppsala University; Sweden
| | | | - Ralph Müller
- Institute for Biomechanics; ETH Zürich; Switzerland
| | - Dmitri A. Ossipov
- Polymer Chemistry, Department of Chemistry - Ångström Laboratory, Science for Life Laboratory; Uppsala University; Sweden
| | - Jöns Hilborn
- Polymer Chemistry, Department of Chemistry - Ångström Laboratory, Science for Life Laboratory; Uppsala University; Sweden
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45
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Studies of bone morphogenetic protein-based surgical repair. Adv Drug Deliv Rev 2012; 64:1277-91. [PMID: 22512928 DOI: 10.1016/j.addr.2012.03.014] [Citation(s) in RCA: 177] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2011] [Revised: 03/26/2012] [Accepted: 03/26/2012] [Indexed: 12/11/2022]
Abstract
Over the past several decades, recombinant human bone morphogenetic proteins (rhBMPs) have been the most extensively studied and widely used osteoinductive agents for clinical bone repair. Since rhBMP-2 and rhBMP-7 were cleared by the U.S. Food and Drug Administration for certain clinical uses, millions of patients worldwide have been treated with rhBMPs for various musculoskeletal disorders. Current clinical applications include treatment of long bone fracture non-unions, spinal surgeries, and oral maxillofacial surgeries. Considering the growing number of recent publications related to clincal research of rhBMPs, there exists enormous promise for these proteins to be used in bone regenerative medicine. The authors take this opportunity to review the rhBMP literature paying specific attention to the current applications of rhBMPs in bone repair and spine surgery. The prospective future of rhBMPs delivered in combination with tissue engineered scaffolds is also reviewed.
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Piskounova S, Gedda L, Hulsart-Billström G, Hilborn J, Bowden T. Characterization of recombinant human bone morphogenetic protein-2 delivery from injectable hyaluronan-based hydrogels by means of 125I-radiolabelling. J Tissue Eng Regen Med 2012; 8:821-30. [PMID: 22927307 DOI: 10.1002/term.1584] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2011] [Revised: 05/07/2012] [Accepted: 06/26/2012] [Indexed: 11/05/2022]
Abstract
This study presents a thorough in vitro and in vivo characterization of the delivery of bone morphogenetic protein 2 (BMP-2) from a hyaluronan-based hydrogel system. The in vitro release of BMP-2 from similar hydrogels has previously been studied by enzyme-linked immunosorbent assay (ELISA), by which only a fraction of the loaded protein is detected. In the current study, (125) I radiolabelling was used instead to monitor BMP-2 in vitro and in vivo. To minimize protein loss during handling, (125) I-BMP-2 adsorption to different tubes was studied at different times and temperatures. The data showed that Protein LoBind tubes exhibited the lowest protein affinity. Furthermore, a biphasic release profile of biologically active BMP-2 was observed both in vitro and in vivo, with the initial fast phase during the first week, followed by a slower release during the remaining 3 weeks. The initial fast-release phase corresponded to the early bone formation observed after 8 days in an ectopic model in rats. Bone volume and mineral content increased until day 14, after which a decrease in bone volume was observed, possibly due to resorption in response to decreased amounts of released BMP-2. Overall, the results suggested that cautious protein handling and a reliable quantification technique are essential factors for successful design of a BMP-2 delivery system.
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47
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Kisiel M, Ventura M, Oommen OP, George A, Walboomers XF, Hilborn J, Varghese OP. Critical assessment of rhBMP-2 mediated bone induction: an in vitro and in vivo evaluation. J Control Release 2012; 162:646-53. [PMID: 22902595 DOI: 10.1016/j.jconrel.2012.08.004] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2012] [Revised: 07/23/2012] [Accepted: 08/04/2012] [Indexed: 11/24/2022]
Abstract
Understanding the influence of formulation and storage conditions on rhBMP-2 bioactivity is extremely important for its clinical application. Reports in the literature show that different research groups employ different parameters such as formulation conditions, storage, doses for in vivo applications etc. that makes it difficult to correlate results from different experiments. We therefore decided to rationalize these anomalies by performing a basic study on such parameters using two commercially available BMPs. Our in vitro experiments suggest that BMPs from different sources have significant differences in their bioactivity. The clinically approved rhBMP-2 (InductOs®; BMP-P) showed superior stability, compared to rhBMP-2 from R&D Systems (BMP-R) at physiological pH (determined by ALP assay). This BMP-P also showed lower binding to polypropylene Eppendorf tube. The BMP-R almost lost its bioactivity within 30 min at physiological pH and also shows more adhesion to plastic surfaces. This aggregation behavior was unequivocally ascertained by performing light scattering studies of the two BMPs, which revealed linear aggregation with time for BMP-R unlike BMP-P. The in vitro results were also reflected in the in vivo experiments, in a rat ectopic model with injectable hyaluronic acid (HA) hydrogel as BMP carrier. After 7 weeks post-implantation we observed larger bone volume with oriented collagen in the BMP-P group but a smaller bone with disoriented collagen in the BMP-R case. Our results highlight the large difference in activity between seemingly identical substances and also the importance of proper handling of such sensitive proteins.
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Affiliation(s)
- Marta Kisiel
- Scilifelab Uppsala, Division of Polymer Chemistry, Department of Chemistry, Ångström Laboratory, Uppsala University, SE-75121 Uppsala, Sweden
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Krishna UM, Martinez AW, Caves JM, Chaikof EL. Hydrazone self-crosslinking of multiphase elastin-like block copolymer networks. Acta Biomater 2012; 8:988-97. [PMID: 22154858 DOI: 10.1016/j.actbio.2011.11.024] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2011] [Revised: 11/12/2011] [Accepted: 11/21/2011] [Indexed: 11/29/2022]
Abstract
Biosynthetic strategies for the production of recombinant elastin-like protein (ELP) triblock copolymers have resulted in elastomeric protein hydrogels, formed through rapid physical crosslinking upon warming of concentrated solutions. However, the strength of physically crosslinked networks can be limited, and options for non-toxic chemical crosslinking of these networks are not optimal. In this report, we modify two recombinant elastin-like proteins with aldehyde and hydrazide functionalities. When combined, these modified recombinant proteins self-crosslink through hydrazone bonding without requiring initiators or producing by-products. Crosslinked materials are evaluated for water content and swelling upon hydration, and subject to tensile and compressive mechanical tests. Hydrazone crosslinking is a viable method for increasing the mechanical strength of elastin-like protein polymers, in a manner that is likely to lend itself to the biocompatible in situ formation of chemically and physically crosslinked ELP hydrogels.
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Hulsart-Billström G, Hu Q, Bergman K, Jonsson KB, Åberg J, Tang R, Larsson S, Hilborn J. Calcium phosphates compounds in conjunction with hydrogel as carrier for BMP-2: a study on ectopic bone formation in rats. Acta Biomater 2011; 7:3042-9. [PMID: 21569871 DOI: 10.1016/j.actbio.2011.04.021] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2011] [Revised: 03/25/2011] [Accepted: 04/24/2011] [Indexed: 11/29/2022]
Abstract
Current treatment of fractures often involves the use of bone graft or bone morphogenetic proteins (BMP) to induce fracture healing, especially in patients with a compromised healing capacity. BMP has to be delivered in conjunction with a carrier. Unfortunately, there are drawbacks and limitations with current carriers, including their bovine origin which carries the risk of an immunological response. The physical properties also limit the use to open surgical procedures, as it cannot be injected. New carriers with improved properties are therefore needed. The aim of this study was to assess the ectopic bone forming capability of various calcium phosphate compounds when used in conjunction with a hydrogel as the carrier for BMP-2. Five different ceramic additives were tested, including β-tricalcium phosphate and four types of hydroxyapatite (HAP) (nanoHAP, HAP, clods of HAP >100 μm, and the biomimetic HAP Ostim35®). The compounds were injected into the thigh muscle of rats, where it formed a gel in situ. After 4 weeks bone formation was evaluated by peripheral quantitative computed tomography and histology. The major finding was that the 20 nm nanoHAP yielded a higher bone density than the other additives (P=0.0008, ANOVA with Tukey's multiple comparison test). We hypothesize that the higher bone density induced by nanoHAP might be due to nanocrystals of calcium phosphate acting as direct building blocks for biomineralization.
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Hilborn J. In vivo
injectable gels for tissue repair. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2011; 3:589-606. [DOI: 10.1002/wnan.91] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jons Hilborn
- Department of Materials Chemistry, Uppsala University, Uppsala 75121, Sweden
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