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Habibah T, Matonohová J, Kulhánek J, Fitzgerald U, Ingr M, Pravda M, Pandit A, Velebný V. In situ formed aldehyde-modified hyaluronic acid hydrogel with polyelectrolyte complexes of aldehyde-modified chondroitin sulfate and gelatin: An approach for minocycline delivery. Carbohydr Polym 2024; 343:122455. [PMID: 39174092 DOI: 10.1016/j.carbpol.2024.122455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 06/28/2024] [Accepted: 07/01/2024] [Indexed: 08/24/2024]
Abstract
Polysaccharides like hyaluronan (HA) and chondroitin sulfate (CS) are native of the brain's extracellular matrix crucial for myelination and brain maturation. Despite extensive research on HA and CS as drug delivery systems (DDS), their high water solubility limits their application as drug carriers. This study introduces an injectable DDS using aldehyde-modified hyaluronic acid (HAOX) hydrogel containing polyelectrolyte complexes (PEC) formed with calcium, gelatin, and either CS or aldehyde-modified CS (CSOX) to deliver minocycline for Multiple Sclerosis therapy. PECs with CSOX enable covalent crosslinking to HAOX, creating immobilized PECs (HAOX_PECOX), while those with CS remain unbound (HAOX_PECS). The in situ forming DDS can be administered via a 20 G needle, with rapid gelation preventing premature leakage. The system integrates into an implanted device for minocycline release through either Fickian or anomalous diffusion, depending on PEC immobilization. HAOX_PECOX reduced burst release by 88 %, with a duration of 127 h for 50 % release. The DDS exhibited an elastic modulus of 3800 Pa and a low swelling ratio (0-1 %), enabling precise control of minocycline release kinetics. Released minocycline reduced IL-6 secretion in the Whole Blood Monocytes Activation Test, suggesting that DDS formation may not alter the biological activity of the loaded drug.
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Affiliation(s)
- Tutut Habibah
- Contipro a.s. Dolní Dobrouč 401, Dolní Dobrouč, 56102, Czechia; Faculty of Technology, Tomas Bata University in Zlin, Vavrečkova, 5669, Czechia
| | - Jana Matonohová
- Contipro a.s. Dolní Dobrouč 401, Dolní Dobrouč, 56102, Czechia
| | | | - Una Fitzgerald
- CURAM, SFI Centre for Research on Biomedical Devices, Biomedical Engineering, University of Galway, Upper Newcastle, H91 W2TY, Ireland
| | - Marek Ingr
- Faculty of Technology, Tomas Bata University in Zlin, Vavrečkova, 5669, Czechia
| | - Martin Pravda
- Contipro a.s. Dolní Dobrouč 401, Dolní Dobrouč, 56102, Czechia.
| | - Abhay Pandit
- CURAM, SFI Centre for Research on Biomedical Devices, Biomedical Engineering, University of Galway, Upper Newcastle, H91 W2TY, Ireland
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Sedek EM, Abdelkader S, Fahmy AE, Kamoun EA, Nouh SR, Khalil NM. Histological evaluation of the regenerative potential of a novel photocrosslinkable gelatin-treated dentin matrix hydrogel in direct pulp capping: an animal study. BMC Oral Health 2024; 24:114. [PMID: 38243218 PMCID: PMC10799547 DOI: 10.1186/s12903-024-03868-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 01/05/2024] [Indexed: 01/21/2024] Open
Abstract
BACKGROUND To assess histologically the success of the pulp capping approach performed in traumatically exposed dogs' teeth using a novel injectable gelatin-treated dentin matrix light cured hydrogel (LCG-TDM) compared with LCG, MTA and TheraCal LC. METHODS Sixty-four dogs' teeth were divided into two groups (each including 32 teeth) based on the post-treatment evaluation period: group I: 2 weeks and group II: 8 weeks. Each group was further subdivided according to the pulp capping material into four subgroups (n = 8), with subgroup A (light-cured gelatin hydrogel) as the control subgroup, subgroup B (LCG-TDM), subgroup C (TheraCal LC), and subgroup D (MTA). Pulps were mechanically exposed in the middle of the cavity floor and capped with different materials. An assessment of periapical response was performed preoperatively and at 8 weeks. After 2 and 8-week intervals, the dogs were sacrificed, and the teeth were stained with hematoxylin-eosin and graded by using a histologic scoring system. Statistical analysis was performed using the chi-square and Kruskal-Wallis tests (p = 0.05). RESULTS All subgroups showed mild inflammation with normal pulp tissue at 2 weeks with no significant differences between subgroups (p ≤ 0.05), except for the TheraCal LC subgroup, which exhibited moderate inflammation (62.5%). Absence of a complete calcified bridge was reported in all subgroups at 2 weeks, while at 8 weeks, the majority of samples in the LCG-TDM and MTA-Angelus subgroups showed complete dentin bridge formation and absence of inflammatory pulp response with no significant differences between them (p ≤ 0.05). However, the formed dentin in the LCG-TDM group was significantly thicker, with layers of ordered odontoblasts identified to create a homogeneous tubular structure and numerous dentinal tubule lines suggesting a favourable trend towards dentin regeneration. TheraCal LC samples revealed a reasonably thick dentin bridge with moderate inflammation (50%) and LCG showed heavily fibrous tissue infiltrates with areas of degenerated pulp with no signs of hard tissue formation. CONCLUSIONS LCG-TDM, as an extracellular matrix-based material, has the potential to regenerate dentin and preserve pulp vitality, making it a viable natural alternative to silicate-based cements for healing in vivo dentin defects in direct pulp-capping procedures.
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Affiliation(s)
- Eman M Sedek
- Dental Biomaterials Department, Faculty of Dentistry, Alexandria University, Alexandria, Egypt.
| | - Sally Abdelkader
- Dental Biomaterials Department, Faculty of Dentistry, Alexandria University, Alexandria, Egypt
| | - Amal E Fahmy
- Dental Biomaterials Department, Faculty of Dentistry, Alexandria University, Alexandria, Egypt
| | - Elbadawy A Kamoun
- Polymeric Materials Research Department, Advanced Technology and New Materials Research Institute, City of Scientific Research and Technological Applications (SRTA-City), New Borg Al-Arab City 21934, Alexandria, Egypt
- Nanotechnology Research Center (NTRC), The British University in Egypt, El-Shreouk City, Cairo, Egypt
| | - Samir R Nouh
- Surgery Department, Faculty of Veterinary Medicine, Alexandria University, Alexandria, Egypt
| | - Nesma Mohamed Khalil
- Oral Biology Department, Faculty of Dentistry, Alexandria University, Alexandria, Egypt
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Sedek EM, Kamoun EA, El-Deeb NM, Abdelkader S, Fahmy AE, Nouh SR, Khalil NM. Photocrosslinkable gelatin-treated dentin matrix hydrogel as a novel pulp capping agent for dentin regeneration: I. synthesis, characterizations and grafting optimization. BMC Oral Health 2023; 23:536. [PMID: 37542230 PMCID: PMC10401831 DOI: 10.1186/s12903-023-03236-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Accepted: 07/18/2023] [Indexed: 08/06/2023] Open
Abstract
BACKGROUND In recent years, treated dentin matrix (TDM) has been introduced as a bioactive hydrogel for dentin regeneration in DPC. However, no study has introduced TDM as a photocrosslinkable hydrogel with a natural photoinitiating system. Therefore, the present study aimed to explore the synthesis, characterizations and grafting optimization of injectable gelatin- glycidyl methacrylate (GMA)/TDM hydrogels as a novel photocrosslinkable pulp capping agent for dentin regeneration. METHODS G-GMA/TDM hydrogel was photocrosslinked using a new two-component photoinitiating system composed of riboflavin as a photoinitiator under visible light and glycine as a first time coinitiator with riboflavin. The grafting reaction conditions of G-GMA/TDM e.g. GMA concentration and reaction time were optimized. The kinetic parameters e.g. grafting efficiency (GE) and grafting percentage (GP%) were calculated to optimize the grafting reaction, while yield (%) was determined to monitor the formation of the hydrogel. Moreover, G-GMA/TDM hydrogels were characterized by swelling ratio, degradation degree, and cytotoxicity. The instrumental characterizations e.g. FTIR, 1H-NMR, SEM and TGA, were investigated for verifying the grafting reaction. Statistical analysis was performed using F test (ANOVA) and Post Hoc Test (P = 0.05). RESULTS The grafting reaction dramatically increased with an increase of both GMA concentration and reaction time. It was realized that the swelling degree and degradation rate of G-GMA/TDM hydrogels were significantly reduced by increasing the GMA concentration and prolonging the reaction time. When compared to the safe low and moderate GMA content hydrogels (0.048, 0.097 M) and shorter reaction times (6, 12, 24 h), G-GMA/TDM with high GMA contents (0.195, 0.391 M) and a prolonged reaction time (48 h) demonstrated cytotoxic effects against cells using the MTT assay. Also, the morphological surface of G-GMA/TDM freeze-dried gels was found more compacted, smooth and uniform due to the grafting process. Significant thermal stability was noticed due to the grafting reaction of G-GMA/TDM throughout the TGA results. CONCLUSIONS G-GMA/TDM composite hydrogel formed by the riboflavin/glycine photoinitiating system is a potential bioactive and biocompatible system for in-situ crosslinking the activated-light pulp capping agent for dentin regeneration.
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Affiliation(s)
- Eman M Sedek
- Dental Biomaterials Department, Faculty of Dentistry, Alexandria University, Champolion St., Azarita, Alexandria, Egypt.
| | - Elbadawy A Kamoun
- Polymeric Materials Research Department, Advanced Technology and New Materials Research Institute, City of Scientific Research and Technological Applications (SRTA-City), New Borg Al-Arab City, Alexandria, 21934, Egypt
- Nanotechnology Research Center (NTRC), The British University in Egypt, El-Shreouk City, Cairo, Egypt
| | - Nehal M El-Deeb
- Biopharmaceutical Products Research Department, Genetic Engineering and Biotechnology Research Institute, City of Scientific Research and Technological Applications (SRTA-City, Alexandria, New Borg El-Arab City, Egypt
| | - Sally Abdelkader
- Dental Biomaterials Department, Faculty of Dentistry, Alexandria University, Champolion St., Azarita, Alexandria, Egypt
| | - Amal E Fahmy
- Dental Biomaterials Department, Faculty of Dentistry, Alexandria University, Champolion St., Azarita, Alexandria, Egypt
| | - Samir R Nouh
- Surgery Department, Faculty of Veterinary Medicine, Alexandria University, Alexandria, Egypt
| | - Nesma Mohamed Khalil
- Oral Biology Department, Faculty of Dentistry, Alexandria University, Alexandria, Egypt
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Duan W, Poole-Warren L, Esrafilzadeh D, Robles UA. Effect of Hydrogel-based Model Fibrosis on Electrical Properties of Bioelectrodes. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2023; 2023:1-4. [PMID: 38082779 DOI: 10.1109/embc40787.2023.10340104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2023]
Abstract
Fibrous tissue encapsulation can impact the performance of bioelectrodes following implantation. For example, significant increases in electrode impedance can occur within four weeks post-implantation. A key limitation hindering the understanding of host response-mediated impedance change is the reliance on animal models or complex in vitro cell cultures for electrode testing. This study aimed to develop an in vitro acellular model that can reproduce the changes in electrical properties of bioelectrodes that occur due to host responses following implantation. Specifically, the effect of synthetic, biological, and bio-synthetic co-polymer hydrogel coatings on electrode impedance was measured. Poly(vinyl alcohol) (PVA), gelatin, and PVA-gelatin co-polymers (10 and 20 wt%) were coated onto platinum (Pt) electrodes. Polarisation and access voltage, key components of the voltage response that relate to cell adhesion and protein adsorption respectively, were measured pre and post hydrogel coating and the impedance change was calculated. Results showed that increasing the polymer concentration affects the access resistance regardless of the hydrogel chemistry but only high content gelatin hydrogels increased the polarisation resistance. The increase in total impedance was ~ 2-fold of bare Pt, similar to clinical observations. This study demonstrated that an acellular fibrosis model using hydrogels could reproduce the impedance changes observed in vivo. Such a model system will support research to better understand in vivo changes in electrical properties and the longer term function of neuroprosthetic electrodes.Clinical Relevance-This study proposes an acellular fibrosis model for preclinical research. This will support the design of improved clinical stimulation strategies and better understanding of the mechanisms of impedance change at the device-tissue interface.
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Beaman HT, Monroe MBB. Highly Porous Gas-Blown Hydrogels for Direct Cell Encapsulation with High Cell Viability. Tissue Eng Part A 2023; 29:308-321. [PMID: 36772801 DOI: 10.1089/ten.tea.2022.0192] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023] Open
Abstract
Cell transplant therapies show potential as treatments for a large number of diseases. The encapsulation of cells within hydrogels is often used to mimic the extracellular matrix and protect cells from the body's immune response. However, cell encapsulation can be limited in terms of both scaffold size and cell viability due to poor nutrient and waste transport throughout the bulk of larger volume hydrogels. Strategies to address this issue include creating prevascularized or porous structured materials. For example, cell-laden hydrogels can be formed by porogen leaching or three-dimensional printing, but these techniques involve the use of multiple materials, long preparation times, and/or specialized equipment. Postfabrication cell seeding in porous scaffolds can result in inconsistent cell density throughout scaffold volumes and typically requires a bioreactor to ensure even cell distribution. In this study, we developed a highly cytocompatible direct cell encapsulation method during the rapid fabrication of porous hydrogels. Using sodium bicarbonate and citric acid as blowing agents, we employed photocurable polymers to produce highly porous materials within a matter of minutes. Cells were directly encapsulated within methacrylated poly(vinyl alcohol), poly(ethylene glycol), and gelatin hydrogels at viabilities as high as 93% by controlling solution variables, such as citric acid content, viscosity, pH, and curing time. Cell viability within the resulting porous constructs was high (>80%) over 14 days of analysis with multiple cell types. This work provides a simple, versatile, and tunable method for cell encapsulation within highly porous constructs that can be built upon in future work for the delivery of cell-based therapies. Impact Statement This simple method to obtain cell-laden hydrogel foams allows direct cell encapsulation within biomaterials without the need for porogens or microcarriers, while maintaining high cell viability. The successful encapsulation of multiple cell types into gas-blown hydrogels with varied chemistries shows the versatility of this method. While this work focuses on photocrosslinkable polymers, any quick gelling material could be used for foam fabrication in expansion of this work. The potential future impact of this work on the treatment of diseases and injuries that utilize cell therapies is wide-ranging.
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Affiliation(s)
- Henry T Beaman
- Department of Biomedical and Chemical Engineering, BioInspired Syracuse: Institute for Material and Living Systems, Syracuse University, Syracuse, New York, USA
| | - Mary Beth B Monroe
- Department of Biomedical and Chemical Engineering, BioInspired Syracuse: Institute for Material and Living Systems, Syracuse University, Syracuse, New York, USA
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Kilmer CE, Walimbe T, Panitch A, Liu JC. Incorporation of a Collagen-Binding Chondroitin Sulfate Molecule to a Collagen Type I and II Blend Hydrogel for Cartilage Tissue Engineering. ACS Biomater Sci Eng 2022; 8:1247-1257. [PMID: 35133126 PMCID: PMC9191256 DOI: 10.1021/acsbiomaterials.1c01248] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Adding chondroitin sulfate (CS) to collagen scaffolds has been shown to improve the outcomes for articular cartilage tissue engineering. Instead of physical entrapment or chemical crosslinking of CS within a scaffold, this study investigated the use of CS with attached collagen-binding peptides (termed CS-SILY). This method better recapitulates the aspects of native cartilage while retaining CS within a collagen type I and II blend (Col I/II) hydrogel. CS retention, average fibril diameter, and mechanical properties were altered by varying the number of SILY peptides attached to the CS backbone. When mesenchymal stromal cells (MSCs) were encapsulated within the scaffolds, the addition of CS-SILY molecules resulted in higher sulfated glycosaminoglycan production, and these results suggest that CS-SILY promotes MSC differentiation into chondrocytes. Taken together, our study shows the promise of adding a CS-SILY molecule to a Col I/II hydrogel with encapsulated MSCs to promote cartilage repair.
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Affiliation(s)
- Claire E Kilmer
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907, United States
| | - Tanaya Walimbe
- School of Biomedical Engineering, University of California Davis, Davis, California 95616, United States
| | - Alyssa Panitch
- School of Biomedical Engineering, University of California Davis, Davis, California 95616, United States.,Weldon School of Biomedical Engineering, Purdue University, West Lafayette, Indiana 47907, United States
| | - Julie C Liu
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907, United States.,Weldon School of Biomedical Engineering, Purdue University, West Lafayette, Indiana 47907, United States
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7
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Goldvaser M, Epstein E, Rosen O, Jayson A, Natan N, Ben-Shalom T, Saphier S, Katalan S, Shoseyov O. Poly(vinyl alcohol)-methacrylate with CRGD peptide: A photocurable biocompatible hydrogel. J Tissue Eng Regen Med 2021; 16:140-150. [PMID: 34808035 DOI: 10.1002/term.3265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 10/04/2021] [Accepted: 10/14/2021] [Indexed: 11/08/2022]
Abstract
Polyvinyl alcohol (PVA)-based hydrogels are promising biomaterials for tissue engineering printing applications. However, one of their main disadvantages is their inability to support cell attachment, which is a critical feature for the preparation of biological scaffolds. The goal of this study was to develop a printable, cell-supportive PVA-based bioink with tunable mechanical properties, without using animal-derived polymers which potentially harbor human pathogens. An ultraviolet light (UV) curable PVA-methacrylate (PVA-MA) polymer mixed with Cys-Arg-Gly-Asp (CRGD) peptide was developed. This peptide holds the integrin receptor binding sequence - RGD, that can enhance cell attachment. The additional cysteine was designed to enable its thiol binding under UV to methacrylate groups of the UV curable PVA-MA. Vero cell, as an adherent cell model was used to assess the hydrogel's cell adhesion. It was found that the PVA-MA-CRGD formula enables the preparation of hydrogels with excellent cell attachment and had even shown superior cell attachment properties relative to added gelatin. Adding hyaluronic acid (HA) as a rheologic modulator enabled the printing of this new formula. Our overall data demonstrates the applicability of this mixture as a bioink for soft tissue engineering such as skin, adipose, liver or kidney tissue.
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Affiliation(s)
- Michael Goldvaser
- Robert H Smith Institute of Plant Science and Genetics, Robert H Smith Faculty of Agriculture, Food and Environment, Hebrew University of Jerusalem, Rehovot, Israel.,Division of Medicinal Chemistry, Israel Institute for Biological Research, Ness-Ziona, Israel
| | - Eyal Epstein
- Department of Biotechnology, Israel Institute for Biological Research, Ness-Ziona, Israel
| | - Osnat Rosen
- Department of Biotechnology, Israel Institute for Biological Research, Ness-Ziona, Israel
| | - Avital Jayson
- Department of Biotechnology, Israel Institute for Biological Research, Ness-Ziona, Israel
| | - Niva Natan
- Department of Biotechnology, Israel Institute for Biological Research, Ness-Ziona, Israel
| | - Tal Ben-Shalom
- Robert H Smith Institute of Plant Science and Genetics, Robert H Smith Faculty of Agriculture, Food and Environment, Hebrew University of Jerusalem, Rehovot, Israel
| | - Sigal Saphier
- Division of Medicinal Chemistry, Israel Institute for Biological Research, Ness-Ziona, Israel
| | - Shahaf Katalan
- Division of Medicinal Chemistry, Israel Institute for Biological Research, Ness-Ziona, Israel
| | - Oded Shoseyov
- Robert H Smith Institute of Plant Science and Genetics, Robert H Smith Faculty of Agriculture, Food and Environment, Hebrew University of Jerusalem, Rehovot, Israel.,CollPlant Ltd, Ness-Ziona, Israel
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8
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Wang F, Chen J, Liu J, Zeng H. Cancer theranostic platforms based on injectable polymer hydrogels. Biomater Sci 2021; 9:3543-3575. [PMID: 33634800 DOI: 10.1039/d0bm02149k] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Theranostic platforms that combine therapy with diagnosis not only prevent the undesirable biological responses that may occur when these processes are conducted separately, but also allow individualized therapies for patients. Polymer hydrogels have been employed to provide well-controlled drug release and targeted therapy in theranostics, where injectable hydrogels enable non-invasive treatment and monitoring with a single injection, offering greater patient comfort and efficient therapy. Efforts have been focused on applying injectable polymer hydrogels in theranostic research and clinical use. This review highlights recent progress in the design of injectable polymer hydrogels for cancer theranostics, particularly focusing on the elements/components of theranostic hydrogels, and their cross-linking strategies, structures, and performance with regard to drug delivery/tracking. Therapeutic agents and tracking modalities that are essential components of the theranostic platforms are introduced, and the design strategies, properties and applications of the injectable hydrogels developed via two approaches, namely chemical bonds and physical interactions, are described. The theranostic functions of the platforms are highly dependent on the architecture and components employed for the construction of hydrogels. Challenges currently presented by theranostic platforms based on injectable hydrogels are identified, and prospects of acquiring more comfortable and personalized therapies are proposed.
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Affiliation(s)
- Feifei Wang
- The Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong 510700, China. and Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada.
| | - Jingsi Chen
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada.
| | - Jifang Liu
- The Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong 510700, China.
| | - Hongbo Zeng
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada.
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9
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Morouço P, Fernandes C, Lattanzi W. Challenges and Innovations in Osteochondral Regeneration: Insights from Biology and Inputs from Bioengineering toward the Optimization of Tissue Engineering Strategies. J Funct Biomater 2021; 12:17. [PMID: 33673516 PMCID: PMC7931100 DOI: 10.3390/jfb12010017] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 02/17/2021] [Accepted: 02/23/2021] [Indexed: 02/06/2023] Open
Abstract
Due to the extremely high incidence of lesions and diseases in aging population, it is critical to put all efforts into developing a successful implant for osteochondral tissue regeneration. Many of the patients undergoing surgery present osteochondral fissure extending until the subchondral bone (corresponding to a IV grade according to the conventional radiographic classification by Berndt and Harty). Therefore, strategies for functional tissue regeneration should also aim at healing the subchondral bone and joint interface, besides hyaline cartilage. With the ambition of contributing to solving this problem, several research groups have been working intensively on the development of tailored implants that could promote that complex osteochondral regeneration. These implants may be manufactured through a wide variety of processes and use a wide variety of (bio)materials. This review aimed to examine the state of the art regarding the challenges, advantages, and drawbacks of the current strategies for osteochondral regeneration. One of the most promising approaches relies on the principles of additive manufacturing, where technologies are used that allow for the production of complex 3D structures with a high level of control, intended and predefined geometry, size, and interconnected pores, in a reproducible way. However, not all materials are suitable for these processes, and their features should be examined, targeting a successful regeneration.
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Affiliation(s)
| | | | - Wanda Lattanzi
- Department of Life Science and Public Health, Università Cattolica del Sacro Cuore, 00168 Rome, Italy;
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10
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Hyaluronic acid and chondroitin sulfate (meth)acrylate-based hydrogels for tissue engineering: Synthesis, characteristics and pre-clinical evaluation. Biomaterials 2020; 268:120602. [PMID: 33360302 DOI: 10.1016/j.biomaterials.2020.120602] [Citation(s) in RCA: 88] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 12/09/2020] [Accepted: 12/10/2020] [Indexed: 12/20/2022]
Abstract
Hydrogels based on photocrosslinkable Hyaluronic Acid Methacrylate (HAMA) and Chondroitin Sulfate Methacrylate (CSMA) are presently under investigation for tissue engineering applications. HAMA and CSMA gels offer tunable characteristics such as tailorable mechanical properties, swelling characteristics, and enzymatic degradability. This review gives an overview of the scientific literature published regarding the pre-clinical development of covalently crosslinked hydrogels that (partially) are based on HAMA and/or CSMA. Throughout the review, recommendations for the next steps in clinical translation of hydrogels based on HAMA or CSMA are made and potential pitfalls are defined. Specifically, a myriad of different synthetic routes to obtain polymerizable hyaluronic acid and chondroitin sulfate derivatives are described. The effects of important parameters such as degree of (meth)acrylation and molecular weight of the synthesized polymers on the formed hydrogels are discussed and useful analytical techniques for their characterization are summarized. Furthermore, the characteristics of the formed hydrogels including their enzymatic degradability are discussed. Finally, a summary of several recent applications of these hydrogels in applied fields such as cartilage and cardiac regeneration and advanced tissue modelling is presented.
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11
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DiStefano TJ, Shmukler JO, Danias G, Di Pauli von Treuheim T, Hom WW, Goldberg DA, Laudier DM, Nasser PR, Hecht AC, Nicoll SB, Iatridis JC. Development of a two-part biomaterial adhesive strategy for annulus fibrosus repair and ex vivo evaluation of implant herniation risk. Biomaterials 2020; 258:120309. [PMID: 32823020 DOI: 10.1016/j.biomaterials.2020.120309] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 07/31/2020] [Accepted: 08/06/2020] [Indexed: 12/13/2022]
Abstract
Intervertebral disc (IVD) herniation causes pain and disability, but current discectomy procedures alleviate pain without repairing annulus fibrosus (AF) defects. Tissue engineering strategies seal AF defects by utilizing hydrogel systems to prevent recurrent herniation, however current biomaterials are limited by poor adhesion to wetted tissue surfaces or low failure strength resulting in considerable risk of implant herniation upon spinal loading. Here, we developed a two-part repair strategy comprising a dual-modified (oxidized and methacrylated) glycosaminoglycan that can chemically adsorb an injectable interpenetrating network hydrogel composed of fibronectin-conjugated fibrin and poly (ethylene glycol) diacrylate (PEGDA) to covalently bond the hydrogel to AF tissue. We show that dual-modified hyaluronic acid imparts greater adhesion to AF tissue than dual-modified chondroitin sulfate, where the degree of oxidation is more strongly correlated with adhesion strength than methacrylation. We apply this strategy to an ex vivo bovine model of discectomy and demonstrate that PEGDA molecular weight tunes hydrogel mechanical properties and affects herniation risk, where IVDs repaired with low-modulus hydrogels composed of 20kDa PEGDA failed at levels at or exceeding discectomy, the clinical standard of care. This strategy bonds injectable hydrogels to IVD extracellular matrix proteins, is optimized to seal AF defects, and shows promise for IVD repair.
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Affiliation(s)
- Tyler J DiStefano
- Leni and Peter W. May Department of Orthopaedics, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Jennifer O Shmukler
- Leni and Peter W. May Department of Orthopaedics, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - George Danias
- Leni and Peter W. May Department of Orthopaedics, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | | | - Warren W Hom
- Leni and Peter W. May Department of Orthopaedics, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - David A Goldberg
- Leni and Peter W. May Department of Orthopaedics, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Damien M Laudier
- Leni and Peter W. May Department of Orthopaedics, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Philip R Nasser
- Leni and Peter W. May Department of Orthopaedics, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Andrew C Hecht
- Leni and Peter W. May Department of Orthopaedics, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Steven B Nicoll
- Department of Biomedical Engineering, The City College of New York, New York, NY, USA
| | - James C Iatridis
- Leni and Peter W. May Department of Orthopaedics, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
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Kim MS, Oh GW, Jang YM, Ko SC, Park WS, Choi IW, Kim YM, Jung WK. Antimicrobial hydrogels based on PVA and diphlorethohydroxycarmalol (DPHC) derived from brown alga Ishige okamurae: An in vitro and in vivo study for wound dressing application. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 107:110352. [PMID: 31761165 DOI: 10.1016/j.msec.2019.110352] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 10/19/2019] [Accepted: 10/20/2019] [Indexed: 12/20/2022]
Abstract
In this study, we fabricated polyvinyl alcohol hydrogels containing diphlorethohydroxycarmalol (DPHC) from Ishige okamurae for its anti-bacterial effect in wound-dressing applications. First, the minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of DPHC against Staphylococcus aureus and Pseudomonas aeruginosa were investigated, and these were found to be about 128 μg/mL and 512 μg/mL, respectively. Polyvinyl alcohol hydrogels loaded with different concentrations of DPHC were then produced for the dressing of wounds to assist in the healing process and to provide an antibacterial effect. To investigate the characteristics of the proposed PVA/DPHC hydrogels, we conducted SEM analysis, rheological analysis, thermogravimetric analysis, water swelling analysis, drug release testing, and gel fraction assessment. The antibacterial activity of the PVA/DPHC hydrogels was also tested against the gram-positive bacterium S. aureus and the gram-negative bacterium P. aeruginosa using ASTM E2149 tests. The biocompatibility of the PVA/DPHC hydrogels was assessed using in vitro indirect and direct contact tests and in vivo tests on ICR mice. The PVA/DPHC hydrogels exhibited the ability to reduce the viability of S. aureus and P. aeruginosa by about 99% in ASTM E2149 testing, while not producing any toxic effect on NHDF-Neo or HaCaT cells as shown in MTT assays and in vitro FDA fluorescence analysis. In addition, the PVA/DPHC hydrogels had a strong wound healing effect when compared to non-treated groups of ICR mice in vivo. Based on the characterization of the PVA/DPHC hydrogels in vitro and in vivo, this study suggests that the proposed hydrogel has significant potential for use in wound dressing.
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Affiliation(s)
- Min-Sung Kim
- Department of Biomedical Engineering, and Center for Marine-Integrated Biomedical Technology (BK21 Plus) Pukyong National University, Busan, 48513, Republic of Korea; Marine-Integrated Bionics Research Center, Pukyong National University, Busan, Republic of Korea
| | - Gun-Woo Oh
- Department of Biomedical Engineering, and Center for Marine-Integrated Biomedical Technology (BK21 Plus) Pukyong National University, Busan, 48513, Republic of Korea; Marine-Integrated Bionics Research Center, Pukyong National University, Busan, Republic of Korea
| | - Yu-Mi Jang
- Division of Food Science and Biotechnology, Pukyong National University, Busan, 48513, Republic of Korea
| | - Seok-Chun Ko
- Team of Marine Bio-resources, National Marine Biodiversity Institute of Korea, Seochun, Chungcheongnam-do, Republic of Korea
| | - Won-Sun Park
- Department of Physiology, Kangwon National University, School of Medicine, Chuncheon, Gangwon, Republic of Korea
| | - Il-Whan Choi
- Department of Microbiology, Inje University College of Medicine, Busan, Republic of Korea
| | - Young-Mog Kim
- Division of Food Science and Biotechnology, Pukyong National University, Busan, 48513, Republic of Korea
| | - Won-Kyo Jung
- Department of Biomedical Engineering, and Center for Marine-Integrated Biomedical Technology (BK21 Plus) Pukyong National University, Busan, 48513, Republic of Korea; Marine-Integrated Bionics Research Center, Pukyong National University, Busan, Republic of Korea.
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Shridhar A, Amsden BG, Gillies ER, Flynn LE. Investigating the Effects of Tissue-Specific Extracellular Matrix on the Adipogenic and Osteogenic Differentiation of Human Adipose-Derived Stromal Cells Within Composite Hydrogel Scaffolds. Front Bioeng Biotechnol 2019; 7:402. [PMID: 31921807 PMCID: PMC6917659 DOI: 10.3389/fbioe.2019.00402] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Accepted: 11/22/2019] [Indexed: 12/21/2022] Open
Abstract
While it has been postulated that tissue-specific bioscaffolds derived from the extracellular matrix (ECM) can direct stem cell differentiation, systematic comparisons of multiple ECM sources are needed to more fully assess the benefits of incorporating tissue-specific ECM in stem cell culture and delivery platforms. To probe the effects of ECM sourced from decellularized adipose tissue (DAT) or decellularized trabecular bone (DTB) on the adipogenic and osteogenic differentiation of human adipose-derived stem/stromal cells (ASCs), a novel detergent-free decellularization protocol was developed for bovine trabecular bone that complemented our established detergent-free decellularization protocol for human adipose tissue and did not require specialized equipment or prolonged incubation times. Immunohistochemical and biochemical characterization revealed enhanced sulphated glycosaminoglycan content in the DTB, while the DAT contained higher levels of collagen IV, collagen VI and laminin. To generate platforms with similar structural and biomechanical properties to enable assessment of the compositional effects of the ECM on ASC differentiation, micronized DAT and DTB were encapsulated with human ASCs within methacrylated chondroitin sulfate (MCS) hydrogels through UV-initiated crosslinking. High ASC viability (>90%) was observed over 14 days in culture. Adipogenic differentiation was enhanced in the MCS+DAT composites relative to the MCS+DTB composites and MCS controls after 14 days of culture in adipogenic medium. Osteogenic differentiation studies revealed a peak in alkaline phosphatase (ALP) enzyme activity at 7 days in the MCS+DTB group cultured in osteogenic medium, suggesting that the DTB had bioactive effects on osteogenic protein expression. Overall, the current study suggests that tissue-specific ECM sourced from DAT or DTB can act synergistically with soluble differentiation factors to enhance the lineage-specific differentiation of human ASCs within 3-D hydrogel systems.
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Affiliation(s)
- Arthi Shridhar
- Department of Chemical and Biochemical Engineering, Thompson Engineering Building, The University of Western Ontario, London, ON, Canada
- Bone and Joint Institute, The University of Western Ontario, London, ON, Canada
| | - Brian G. Amsden
- Department of Chemical Engineering, Queen's University, Kingston, ON, Canada
| | - Elizabeth R. Gillies
- Department of Chemical and Biochemical Engineering, Thompson Engineering Building, The University of Western Ontario, London, ON, Canada
- Bone and Joint Institute, The University of Western Ontario, London, ON, Canada
- Department of Chemistry, The University of Western Ontario, London, ON, Canada
| | - Lauren E. Flynn
- Department of Chemical and Biochemical Engineering, Thompson Engineering Building, The University of Western Ontario, London, ON, Canada
- Bone and Joint Institute, The University of Western Ontario, London, ON, Canada
- Department of Anatomy and Cell Biology, Schulich School of Medicine and Dentistry, The University of Western Ontario, London, ON, Canada
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Xie J, Fan D. A high-toughness and high cell adhesion polyvinyl alcohol(PVA-hyaluronic acid (HA)-human-like collagen (HLC) composite hydrogel for cartilage repair. INT J POLYM MATER PO 2019. [DOI: 10.1080/00914037.2019.1631824] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Jiaheng Xie
- Shaanxi Key Laboratory of Degradable Biomedical Materials, School of Chemical Engineering, Northwest University, Xi’an, China
- Shaanxi R&D Center of Biomaterials and Fermentation Engineering, School of Chemical Engineering, Northwest University, Xi’an, China
- Biotech. & Biomed. Research Institute, Northwest University, Xi’an, China
| | - Daidi Fan
- Shaanxi Key Laboratory of Degradable Biomedical Materials, School of Chemical Engineering, Northwest University, Xi’an, China
- Shaanxi R&D Center of Biomaterials and Fermentation Engineering, School of Chemical Engineering, Northwest University, Xi’an, China
- Biotech. & Biomed. Research Institute, Northwest University, Xi’an, China
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Ornell KJ, Lozada D, Phan NV, Coburn JM. Controlling methacryloyl substitution of chondroitin sulfate: injectable hydrogels with tunable long-term drug release profiles. J Mater Chem B 2019; 7:2151-2161. [PMID: 32073574 DOI: 10.1039/c8tb03020k] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Drug delivery systems capable of local sustained release of small molecule therapeutics remain a critical need in many fields, including oncology. Here, a system to create tunable hydrogels capable of modulating the loading and release of cationic small molecule therapeutics was developed. Chondroitin sulfate (CS) is a sulfated glycosaminoglycan that has many promising properties, including biocompatibility, biodegradation and chemically modifiable groups for both covalent and non-covalent bonding. CS was covalently modified with photocrosslinkable methacryloyl groups (CSMA) to develop an injectable hydrogel fabrication. Utilizing anionic groups, cationic drugs can be adsorbed and released from the hydrogels. This study demonstrates the synthesis of CSMA with a varying degree of substitution (DS) to generate hydrogels with varying swelling properties, maximum injection force, and drug release kinetics. The DS of the synthesized CSMA ranged from 0.05 ± 0.02 (2 h reaction) to 0.28 ± 0.02 (24 h reaction) with a DS of 1 representing 100% modification. The altered DS resulted in changes in hydrogel properties with the swelling of 20% CSMA hydrogels ranging from 42 (2 h reaction) to 13 (24 h reaction) and injection forces ranging from 18 N (2 h reaction) to 94 N (24 h reaction). The release of sunitinib, an oncology therapeutic that inhibits intracellular signaling by targeting multiple receptor tyrosine kinases, ranged from 18 μg per day (2 h reaction) to 9 μg per day (24 h reaction). While decreasing the DS increased the hydrogel swelling and rate of therapeutic release, it also limited the hydrogel fabrication range to only those containing 10% or higher CSMA. Blended polymer systems with poly(vinyl alcohol)-methacrylate (PVAMA) were fabricated to stabilize the resulting hydrogels via attenuating the swelling properties. Release profiles previously unattainable with the pure CSMA hydrogels were achieved with the blended hydrogel formulations. Overall, these studies identify a method to formulate tunable CSMA and blended CSMA/PVAMA hydrogels capable of sustained release of cationic therapeutics over six weeks with applications in oncology therapeutics.
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Affiliation(s)
- Kimberly J Ornell
- Department of Biomedical Engineering, Worcester Polytechnic Institute, 60 Prescott Street, Worcester, MA 01605, USA.
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17
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Niu C, Li X, Wang Y, Liu X, Shi J, Wang X. Design and performance of a poly(vinyl alcohol)/silk fibroin enzymatically crosslinked semi-interpenetrating hydrogel for a potential hydrophobic drug delivery. RSC Adv 2019; 9:41074-41082. [PMID: 35540084 PMCID: PMC9076402 DOI: 10.1039/c9ra09344c] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2019] [Accepted: 11/21/2019] [Indexed: 01/24/2023] Open
Abstract
In this study, in order to obtain hydrogels with good properties for sustained release of hydrophobic drugs or for tissue engineering, poly(vinyl alcohol) (PVA)/silk fibroin (SF) semi-interpenetrating (semi-IPN) hydrogels with varied ratios of PVA/SF were enzymatically cross-linked using horseradish peroxidase. A vial inversion test determined approximate gelation times of PVA/SF hydrogels ranging from 5 to 10 min. The hydrogels with varied ratios showed differences in pore size and morphology. Mass loss rate of hydrogels increased from 15% to 58% with increasing PVA concentration. Stable hydrogels with PVA/SF at 0.5 : 1 w/w showed the best swelling ratio values in distilled water (7.36). FTIR analysis revealed that silk fibroin in these hydrogels exhibited the coexistence of amorphous and silk I crystalline structures and the SF and PVA molecules interacted with each other well. The mechanical properties of the composite hydrogels were controlled by the SF content. From the cell viability results, it was found that the hydrogels exerted very low cytotoxicity. Paeonol was chosen as the hydrophobic drug model for release studies from the hydrogels. Paeonol can be uniformly loaded into the composite hydrogels using the emulsifying property of PVA and paeonol release from the hydrogels was dependent on the PVA/SF ratio. This study applied a novel type of enzymatically crosslinked semi-IPN hydrogel that may have potential applications in drug delivery. Enzymatically cross-linked PVA/SF semi-IPN hydrogels with tunable pore structure have potential applications in sustained release of hydrophobic drug.![]()
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Affiliation(s)
- Chunqing Niu
- Hubei Province Research Center of Engineering Technology for Utilization of Botanical Functional Ingredients
- Hubei Engineering University
- Xiaogan 432000
- People's Republic of China
| | - Xiang Li
- Hubei Province Research Center of Engineering Technology for Utilization of Botanical Functional Ingredients
- Hubei Engineering University
- Xiaogan 432000
- People's Republic of China
| | - Yiyu Wang
- Hubei Province Research Center of Engineering Technology for Utilization of Botanical Functional Ingredients
- Hubei Engineering University
- Xiaogan 432000
- People's Republic of China
| | - Xinyu Liu
- Hubei Province Research Center of Engineering Technology for Utilization of Botanical Functional Ingredients
- Hubei Engineering University
- Xiaogan 432000
- People's Republic of China
| | - Jian Shi
- Department of Machine Intelligence and Systems Engineering
- Faculty of Systems Science and Technology
- Akita Prefectural University
- Akita 015-0055
- Japan
| | - Xinyu Wang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing
- Wuhan University of Technology
- Wuhan 430070
- People's Republic of China
- Biomedical Materials and Engineering Research Center of Hubei Province
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18
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Flow-Mediated Drug Transport from Drug-Eluting Stents is Negligible: Numerical and In-vitro Investigations. Ann Biomed Eng 2018; 47:878-890. [PMID: 30552528 DOI: 10.1007/s10439-018-02176-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2018] [Accepted: 11/27/2018] [Indexed: 12/21/2022]
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Aisenbrey EA, Bryant SJ. The role of chondroitin sulfate in regulating hypertrophy during MSC chondrogenesis in a cartilage mimetic hydrogel under dynamic loading. Biomaterials 2018; 190-191:51-62. [PMID: 30391802 DOI: 10.1016/j.biomaterials.2018.10.028] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Revised: 10/18/2018] [Accepted: 10/21/2018] [Indexed: 01/29/2023]
Abstract
Mesenchymal stem cells (MSCs) are promising for cartilage regeneration, but readily undergo terminal differentiation. The aim of this study was two-fold: a) investigate physiochemical cues from a cartilage-mimetic hydrogel under dynamic compressive loading on MSC chondrogenesis and hypertrophy and b) identify whether Smad signaling and p38 MAPK signaling mediate hypertrophy during MSC chondrogenesis. Human MSCs were encapsulated in photoclickable poly(ethylene glycol) hydrogels containing chondroitin sulfate and RGD, cultured under dynamic compressive loading or free swelling for three weeks, and evaluated by qPCR and immunohistochemistry. Loading inhibited hypertrophy in the cartilage-mimetic hydrogel indicated by a reduction in pSmad 1/5/8, Runx2, and collagen X proteins, while maintaining chondrogenesis by pSmad 2/3 and collagen II proteins. Inhibiting pSmad 1/5/8 under free swelling culture significantly reduced collagen X protein, similar to the loading condition. Chondroitin sulfate was necessary for load-inhibited hypertrophy and correlated with enhanced S100A4 expression, which is downstream of the osmotic responsive transcription factor NFAT5. Inhibiting p38 MAPK under loading reduced S100A4 expression, and upregulated Runx2 and collagen X protein. Findings from this study indicate that chondroitin sulfate with dynamic loading create physiochemical cues that support MSC chondrogenesis and attenuate hypertrophy through Smad 1/5/8 inhibition and p38 MAPK upregulation.
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Affiliation(s)
- Elizabeth A Aisenbrey
- Department of Chemical and Biological Engineering, University of Colorado, Boulder, CO 80309-0596, USA
| | - Stephanie J Bryant
- Department of Chemical and Biological Engineering, University of Colorado, Boulder, CO 80309-0596, USA; BioFrontiers Institute, University of Colorado, Boulder, CO 80309-0596, USA; Material Science and Engineering Program, University of Colorado, Boulder, CO 80309-0596, USA.
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20
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Al Sulaiman D, Cadinu P, Ivanov AP, Edel JB, Ladame S. Chemically Modified Hydrogel-Filled Nanopores: A Tunable Platform for Single-Molecule Sensing. NANO LETTERS 2018; 18:6084-6093. [PMID: 30105906 DOI: 10.1021/acs.nanolett.8b03111] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Label-free, single-molecule sensing is anideal candidate for biomedical applications that rely on the detection of low copy numbers in small volumes and potentially complex biofluids. Among them, solid-state nanopores can be engineered to detect single molecules of charged analytes when they are electrically driven through the nanometer-sized aperture. When successfully applied to nucleic acid sensing, fast transport in the range of 10-100 nucleotides per nanosecond often precludes the use of standard nanopores for the detection of the smallest fragments. Herein, hydrogel-filled nanopores (HFN) are reported that combine quartz nanopipettes with biocompatible chemical poly(vinyl) alcohol hydrogels engineered in-house. Hydrogels were modified physically or chemically to finely tune, in a predictable manner, the transport of specific molecules. Controlling the hydrogel mesh size and chemical composition allowed us to slow DNA transport by 4 orders of magnitude and to detect fragments as small as 100 base pairs (bp) with nanopores larger than 20 nm at an ionic strength comparable to physiological conditions. Considering the emergence of cell-free nucleic acids as blood biomarkers for cancer diagnostics or prenatal testing, the successful sensing and size profiling of DNA fragments ranging from 100 bp to >1 kbp long under physiological conditions demonstrates the potential of HFNs as a new generation of powerful and easily tunable molecular diagnostics tools.
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21
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Lim KS, Martens P, Poole-Warren L. Biosynthetic Hydrogels for Cell Encapsulation. SPRINGER SERIES IN BIOMATERIALS SCIENCE AND ENGINEERING 2018. [DOI: 10.1007/978-3-662-57511-6_1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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22
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Diekjürgen D, Grainger DW. Polysaccharide matrices used in 3D in vitro cell culture systems. Biomaterials 2017; 141:96-115. [PMID: 28672214 DOI: 10.1016/j.biomaterials.2017.06.020] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 06/14/2017] [Accepted: 06/19/2017] [Indexed: 12/22/2022]
Abstract
Polysaccharides comprise a diverse class of polymeric materials with a history of proven biocompatibility and continual use as biomaterials. Recent focus on new matrices appropriate for three-dimensional (3D) cell culture offers new opportunities to apply polysaccharides as extracellular matrix mimics. However, chemical and structural bases for specific cell-polysaccharide interactions essential for their utility as 3-D cell matrices are not well defined. This review describes how these naturally sourced biomaterials satisfy several key properties for current 3D cell culture needs and can also be synthetically modified or blended with additional components to tailor their cell engagement properties. Beyond their benign interactions with many cell types in cultures, their economical and high quality sourcing, optical clarity for ex situ analytical interrogation and in situ gelation represent important properties of these polymers for 3D cell culture applications. Continued diversification of their versatile glycan chemistry, new bio-synthetic sourcing strategies and elucidation of new cell-specific properties are attractive to expand the polysaccharide polymer utility for cell culture needs. Many 3D cell culture priorities are addressed with the portfolio of polysaccharide materials available and under development. This review provides a critical analysis of their properties, capabilities and challenges in 3D cell culture applications.
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Affiliation(s)
- Dorina Diekjürgen
- Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, UT, 84112-5820, USA
| | - David W Grainger
- Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, UT, 84112-5820, USA; Department of Bioengineering, University of Utah, Salt Lake City, UT, 84112-5820, USA.
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23
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Goding J, Gilmour A, Martens P, Poole-Warren L, Green R. Interpenetrating Conducting Hydrogel Materials for Neural Interfacing Electrodes. Adv Healthc Mater 2017; 6. [PMID: 28198591 DOI: 10.1002/adhm.201601177] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Revised: 01/09/2017] [Indexed: 01/05/2023]
Abstract
Conducting hydrogels (CHs) are an emerging technology in the field of medical electrodes and brain-machine interfaces. The greatest challenge to the fabrication of CH electrodes is the hybridization of dissimilar polymers (conductive polymer and hydrogel) to ensure the formation of interpenetrating polymer networks (IPN) required to achieve both soft and electroactive materials. A new hydrogel system is developed that enables tailored placement of covalently immobilized dopant groups within the hydrogel matrix. The role of immobilized dopant in the formation of CH is investigated through covalent linking of sulfonate doping groups to poly(vinyl alcohol) (PVA) macromers. These groups control the electrochemical growth of the conducting polymer poly(3,4-ethylenedioxythiophene) (PEDOT) and subsequent material properties. The effect of dopant density and interdopant spacing on the physical, electrochemical, and mechanical properties of the resultant CHs is examined. Cytocompatible PVA hydrogels with PEDOT penetration throughout the depth of the electrode are produced. Interdopant spacing is found to be the key factor in the formation of IPNs, with smaller interdopant spacing producing CH electrodes with greater charge storage capacity and lower impedance due to increased PEDOT growth throughout the network. This approach facilitates tailorable, high-performance CH electrodes for next generation, low impedance neuroprosthetic devices.
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Affiliation(s)
- Josef Goding
- Graduate School of Biomedical Engineering; University of New South Wales; Sydney NSW 2052 Australia
| | - Aaron Gilmour
- Graduate School of Biomedical Engineering; University of New South Wales; Sydney NSW 2052 Australia
| | - Penny Martens
- Graduate School of Biomedical Engineering; University of New South Wales; Sydney NSW 2052 Australia
| | - Laura Poole-Warren
- Graduate School of Biomedical Engineering; University of New South Wales; Sydney NSW 2052 Australia
| | - Rylie Green
- Graduate School of Biomedical Engineering; University of New South Wales; Sydney NSW 2052 Australia
- Department of Bioengineering; Imperial College London; London SW72BP UK
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24
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Wrobel MR, Sundararaghavan HG. Positive and negative cues for modulating neurite dynamics and receptor expression. Biomed Mater 2017; 12:025016. [DOI: 10.1088/1748-605x/aa61d1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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25
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Anjum F, Carroll A, Young SA, Flynn LE, Amsden BG. Tough, Semisynthetic Hydrogels for Adipose Derived Stem Cell Delivery for Chondral Defect Repair. Macromol Biosci 2017; 17. [DOI: 10.1002/mabi.201600373] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Revised: 12/05/2016] [Indexed: 12/14/2022]
Affiliation(s)
- Fraz Anjum
- Department of Chemical Engineering; Queen's University Kingston; ON K7L3N6 Canada
- Human Mobility Research Centre; Queen's University Kingston; ON K7L3N6 Canada
| | - Andrew Carroll
- Department of Chemical Engineering; Queen's University Kingston; ON K7L3N6 Canada
- Human Mobility Research Centre; Queen's University Kingston; ON K7L3N6 Canada
| | - Stuart A. Young
- Department of Chemical Engineering; Queen's University Kingston; ON K7L3N6 Canada
- Human Mobility Research Centre; Queen's University Kingston; ON K7L3N6 Canada
| | - Lauren E. Flynn
- Department of Chemical and Biochemical Engineering; The University of Western Ontario; London ON N6A 3K7 Canada
- Department of Anatomy and Cell Biology; The University of Western Ontario; London ON N6A 3K7 Canada
| | - Brian G. Amsden
- Department of Chemical Engineering; Queen's University Kingston; ON K7L3N6 Canada
- Human Mobility Research Centre; Queen's University Kingston; ON K7L3N6 Canada
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Ratheesh G, Venugopal JR, Chinappan A, Ezhilarasu H, Sadiq A, Ramakrishna S. 3D Fabrication of Polymeric Scaffolds for Regenerative Therapy. ACS Biomater Sci Eng 2017; 3:1175-1194. [PMID: 33440508 DOI: 10.1021/acsbiomaterials.6b00370] [Citation(s) in RCA: 85] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Recent advances in bioprinting technology have been used to precisely dispense cell-laden biomaterials for the construction of complex 3D functional living tissues or artificial organs. Organ printing and biofabrication provides great potential for the freeform fabrication of 3D living organs using cellular spheroids, biocomposite nanofibers, or bioinks as building blocks for regenerative therapy. Vascularization is often identified as a main technological barrier for building 3D organs in tissue engineering. 3D printing of living tissues starts with potential support of biomaterials to maintain structural integrity and degradation of certain time periods after printing of the scaffolds. Biofabrication is the production of complex living and nonliving biological products from raw materials such as cells, molecules, ECM, and biomaterials. Generally, two basic methods are used for the fabrication of scaffolds such as conventional/traditional fabrication processes and advance fabrication processes for engineering organs. A wide range of polymers and biomaterials are used for the fabrication of scaffolds in tissue engineering applications. 3D additive manufacturing is advancing day-by-day; however, there are various critical challenging factors used for fabricating 3D scaffolds. This review is aimed at understanding the various scaffold fabrication techniques, types of polymers and biomaterials used for the fabrication processes, various fields of applications, and different challenges faced in their fabrication of scaffolds in regenerative therapy.
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Affiliation(s)
- Greeshma Ratheesh
- Center for Nanofibers & Nanotechnology, Department of Mechanical Engineering, National University of Singapore, Singapore 117576.,Science and Engineering Faculty, Queensland University of Technology, Brisbane, Australia
| | - Jayarama Reddy Venugopal
- Center for Nanofibers & Nanotechnology, Department of Mechanical Engineering, National University of Singapore, Singapore 117576
| | - Amutha Chinappan
- Center for Nanofibers & Nanotechnology, Department of Mechanical Engineering, National University of Singapore, Singapore 117576
| | - Hariharan Ezhilarasu
- Center for Nanofibers & Nanotechnology, Department of Mechanical Engineering, National University of Singapore, Singapore 117576
| | - Asif Sadiq
- Center for Nanofibers & Nanotechnology, Department of Mechanical Engineering, National University of Singapore, Singapore 117576
| | - Seeram Ramakrishna
- Center for Nanofibers & Nanotechnology, Department of Mechanical Engineering, National University of Singapore, Singapore 117576.,Guangdong-Hongkong-Macau Institute of CNS Regeneration (GHMICR), Jinan University, Guangzhou 510632, China
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Chuah YJ, Peck Y, Lau JEJ, Hee HT, Wang DA. Hydrogel based cartilaginous tissue regeneration: recent insights and technologies. Biomater Sci 2017; 5:613-631. [DOI: 10.1039/c6bm00863a] [Citation(s) in RCA: 81] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023]
Abstract
Hydrogel based technologies has been extensively employed in both exploratory research and clinical applications to address numerous existing challenges in the regeneration of articular cartilage and intervertebral disc.
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Affiliation(s)
- Yon Jin Chuah
- School of Chemical and Biomedical Engineering
- Nanyang Technological University
- Singapore 637459
- Singapore
| | - Yvonne Peck
- School of Chemical and Biomedical Engineering
- Nanyang Technological University
- Singapore 637459
- Singapore
| | - Jia En Josias Lau
- School of Chemical & Life Sciences
- Singapore Polytechnic
- Singapore 139651
- Singapore
| | - Hwan Tak Hee
- Lee Kong Chian School of Medicine
- Nanyang Technological University
- Singapore 636921
- Singapore
- Pinnacle Spine & Scoliosis Centre
| | - Dong-An Wang
- School of Chemical and Biomedical Engineering
- Nanyang Technological University
- Singapore 637459
- Singapore
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28
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A thermo-responsive and photo-polymerizable chondroitin sulfate-based hydrogel for 3D printing applications. Carbohydr Polym 2016; 149:163-74. [DOI: 10.1016/j.carbpol.2016.04.080] [Citation(s) in RCA: 88] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2015] [Revised: 04/12/2016] [Accepted: 04/18/2016] [Indexed: 12/20/2022]
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Reys LL, Silva SS, Soares da Costa D, Oliveira NM, Mano JF, Reis RL, Silva TH. Fucoidan Hydrogels Photo-Cross-Linked with Visible Radiation As Matrices for Cell Culture. ACS Biomater Sci Eng 2016; 2:1151-1161. [DOI: 10.1021/acsbiomaterials.6b00180] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lara L. Reys
- 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- Parque de Ciência
e Tecnologia, 4805-017 Barco, Guimarães, Portugal
- ICVS/3B’s−PT Government Associated Laboratory, Braga/Guimarães, Portugal
| | - Simone S. Silva
- 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- Parque de Ciência
e Tecnologia, 4805-017 Barco, Guimarães, Portugal
- ICVS/3B’s−PT Government Associated Laboratory, Braga/Guimarães, Portugal
| | - Diana Soares da Costa
- 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- Parque de Ciência
e Tecnologia, 4805-017 Barco, Guimarães, Portugal
- ICVS/3B’s−PT Government Associated Laboratory, Braga/Guimarães, Portugal
| | - Nuno M. Oliveira
- 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- Parque de Ciência
e Tecnologia, 4805-017 Barco, Guimarães, Portugal
- ICVS/3B’s−PT Government Associated Laboratory, Braga/Guimarães, Portugal
| | - João F. Mano
- 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- Parque de Ciência
e Tecnologia, 4805-017 Barco, Guimarães, Portugal
- ICVS/3B’s−PT Government Associated Laboratory, Braga/Guimarães, Portugal
| | - Rui L. Reis
- 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- Parque de Ciência
e Tecnologia, 4805-017 Barco, Guimarães, Portugal
- ICVS/3B’s−PT Government Associated Laboratory, Braga/Guimarães, Portugal
| | - Tiago H. Silva
- 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- Parque de Ciência
e Tecnologia, 4805-017 Barco, Guimarães, Portugal
- ICVS/3B’s−PT Government Associated Laboratory, Braga/Guimarães, Portugal
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30
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Hoch E, Tovar GEM, Borchers K. Biopolymer-based hydrogels for cartilage tissue engineering. BIOINSPIRED BIOMIMETIC AND NANOBIOMATERIALS 2016. [DOI: 10.1680/jbibn.15.00017] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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31
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Aisenbrey EA, Bryant SJ. Mechanical loading inhibits hypertrophy in chondrogenically differentiating hMSCs within a biomimetic hydrogel. J Mater Chem B 2016; 4:3562-3574. [PMID: 27499854 PMCID: PMC4972607 DOI: 10.1039/c6tb00006a] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Three dimensional hydrogels are a promising vehicle for delivery of adult human bone-marrow derived mesenchymal stem cells (hMSCs) for cartilage tissue engineering. One of the challenges with using this cell type is the default pathway is terminal differentiation, a hypertrophic phenotype and precursor to endochondral ossification. We hypothesized that a synthetic hydrogel consisting of extracellular matrix (ECM) analogs derived from cartilage when combined with dynamic loading provides physiochemical cues for achieving a stable chondrogenic phenotype. Hydrogels were formed from crosslinked poly(ethylyene glycol) as the base chemistry and to which (meth)acrylate functionalized ECM analogs of RGD (cell adhesion peptide) and chondroitin sulfate (ChS, a negatively charged glycosaminoglycan) were introduced. Bone-marrow derived hMSCs from three donors were encapsulated in the hydrogels and cultured under free swelling conditions or under dynamic com pressive loading with 2.5 ng/ml TGF-β3. hMSC differentiation was assessed by quantitative PCR and immunohistochemistry. Nine hydrogel formulations were initially screened containing 0, 0.1 or 1mM RGD and 0, 1 or 2wt% ChS. After 21 days, the 1% ChS and 0.1 mM RGD hydrogel had the highest collagen II gene expression, but this was accompanied by high collagen X gene expression. At the protein level, collagen II was detected in all formulations with ECM analogs, but minimally detectable in the hydrogel without ECM analogs. Collagen X protein was present in all formulations. The 0.1 mM RGD and 1% ChS formulation was selected and subjected to five loading regimes: no loading, 5% strain 0.3Hz (1.5%/s), 10% strain 0.3 Hz (3%/s), 5% strain 1 Hz (5%/s), and 10% strain 1Hz (10%/s). After 21 days, ~70-90% of cells stained positive for collagen II protein regardless of the culture condition. On the contrary, only ~20-30% of cells stained positive for collagen X protein under 3 and 5%/s loading conditions, which was accompanied by minimal staining for RunX2. The other culture conditions had more cells staining positive for collagen X (40-60%) and was accompanied by positive staining for RunX2. In summary, a cartilage-like biomimetic hydrogel supports chondrogenesis of hMSCs, but dynamic loading only under select strain rates is able to inhibit hypertrophy.
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Affiliation(s)
- E A Aisenbrey
- University of Colorado,Boulder. Chemical and Biological Engineering, UCB 596. Boulder, CO. 80309
| | - S J Bryant
- University of Colorado,Boulder. Chemical and Biological Engineering, UCB 596. Boulder, CO. 80309
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32
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Patton AJ, Poole-Warren LA, Green RA. Mechanisms for Imparting Conductivity to Nonconductive Polymeric Biomaterials. Macromol Biosci 2016; 16:1103-21. [DOI: 10.1002/mabi.201600057] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Revised: 03/31/2016] [Indexed: 11/08/2022]
Affiliation(s)
| | | | - Rylie A. Green
- Graduate School of Biomedical Engineering; University of New South Wales
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33
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Bartnikowski M, Akkineni AR, Gelinsky M, Woodruff MA, Klein TJ. A Hydrogel Model Incorporating 3D-Plotted Hydroxyapatite for Osteochondral Tissue Engineering. MATERIALS (BASEL, SWITZERLAND) 2016; 9:E285. [PMID: 28773410 PMCID: PMC5502978 DOI: 10.3390/ma9040285] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Revised: 03/24/2016] [Accepted: 04/06/2016] [Indexed: 12/15/2022]
Abstract
The concept of biphasic or multi-layered compound scaffolds has been explored within numerous studies in the context of cartilage and osteochondral regeneration. To date, no system has been identified that stands out in terms of superior chondrogenesis, osteogenesis or the formation of a zone of calcified cartilage (ZCC). Herein we present a 3D plotted scaffold, comprising an alginate and hydroxyapatite paste, cast within a photocrosslinkable hydrogel made of gelatin methacrylamide (GelMA), or GelMA with hyaluronic acid methacrylate (HAMA). We hypothesized that this combination of 3D plotting and hydrogel crosslinking would form a high fidelity, cell supporting structure that would allow localization of hydroxyapatite to the deepest regions of the structure whilst taking advantage of hydrogel photocrosslinking. We assessed this preliminary design in terms of chondrogenesis in culture with human articular chondrocytes, and verified whether the inclusion of hydroxyapatite in the form presented had any influence on the formation of the ZCC. Whilst the inclusion of HAMA resulted in a better chondrogenic outcome, the effect of HAP was limited. We overall demonstrated that formation of such compound structures is possible, providing a foundation for future work. The development of cohesive biphasic systems is highly relevant for current and future cartilage tissue engineering.
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Affiliation(s)
- Michal Bartnikowski
- Institute of Health and Biomedical Innovation, Queensland University of Technology, 60 Musk Avenue, Kelvin Grove, Queensland 4059, Australia.
| | - Ashwini Rahul Akkineni
- Centre for Translational Bone, Joint and Soft Tissue Research, Faculty of Medicine, Technische Universität Dresden, Fetscherstraße 74, Dresden D-01307, Germany.
| | - Michael Gelinsky
- Centre for Translational Bone, Joint and Soft Tissue Research, Faculty of Medicine, Technische Universität Dresden, Fetscherstraße 74, Dresden D-01307, Germany.
| | - Maria A Woodruff
- Institute of Health and Biomedical Innovation, Queensland University of Technology, 60 Musk Avenue, Kelvin Grove, Queensland 4059, Australia.
| | - Travis J Klein
- Institute of Health and Biomedical Innovation, Queensland University of Technology, 60 Musk Avenue, Kelvin Grove, Queensland 4059, Australia.
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34
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Hayami JWS, Waldman SD, Amsden BG. Chondrocyte Generation of Cartilage-Like Tissue Following Photoencapsulation in Methacrylated Polysaccharide Solution Blends. Macromol Biosci 2016; 16:1083-95. [PMID: 27061241 DOI: 10.1002/mabi.201500465] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Revised: 03/21/2016] [Indexed: 12/20/2022]
Abstract
Chondrocyte-seeded, photo-cross-linked hydrogels prepared from solutions containing 50% mass fractions of methacrylated glycol chitosan or methacrylated hyaluronic acid (MHA) with methacrylated chondroitin sulfate (MCS) are cultured in vitro under static conditions over 35 d to assess their suitability for load-bearing soft tissue repair. The photo-cross-linked hydrogels have initial equilibrium moduli between 100 and 300 kPa, but only the MHAMCS hydrogels retain an approximately constant modulus (264 ± 5 kPa) throughout the culture period. Visually, the seeded chondrocytes in the MHAMCS hydrogels are well distributed with an apparent constant viability in culture. Multicellular aggregates are surrounded by cartilaginous matrix, which contain aggrecan and collagen II. Thus, co-cross-linked MCS and MHA hydrogels may be suited for use in an articular cartilage or nucleus pulposus repair applications.
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Affiliation(s)
- James W S Hayami
- Department of Chemical Engineering, Queen's University, Kingston, K7L 3N6, Canada
| | - Stephen D Waldman
- Department of Chemical Engineering, Ryerson University, Toronto, M5B 2K3, Canada
| | - Brian G Amsden
- Department of Chemical Engineering, Queen's University, Kingston, K7L 3N6, Canada
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35
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Bedini E, Laezza A, Iadonisi A. Chemical Derivatization of Sulfated Glycosaminoglycans. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600108] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Emiliano Bedini
- Department of Chemical Sciences; University of Naples Federico II; Complesso Universitario Monte S. Angelo; via Cintia 4 80126 Napoli Italy
| | - Antonio Laezza
- Department of Chemical Sciences; University of Naples Federico II; Complesso Universitario Monte S. Angelo; via Cintia 4 80126 Napoli Italy
| | - Alfonso Iadonisi
- Department of Chemical Sciences; University of Naples Federico II; Complesso Universitario Monte S. Angelo; via Cintia 4 80126 Napoli Italy
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36
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The influence of topography on tissue engineering perspective. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 61:906-21. [DOI: 10.1016/j.msec.2015.12.094] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Revised: 10/26/2015] [Accepted: 12/30/2015] [Indexed: 12/26/2022]
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37
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Lam J, Clark EC, Fong ELS, Lee EJ, Lu S, Tabata Y, Mikos AG. Evaluation of cell-laden polyelectrolyte hydrogels incorporating poly(L-Lysine) for applications in cartilage tissue engineering. Biomaterials 2016; 83:332-46. [PMID: 26799859 PMCID: PMC4754156 DOI: 10.1016/j.biomaterials.2016.01.020] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Revised: 12/26/2015] [Accepted: 01/01/2016] [Indexed: 12/21/2022]
Abstract
To address the lack of reliable long-term solutions for cartilage injuries, strategies in tissue engineering are beginning to leverage developmental processes to spur tissue regeneration. This study focuses on the use of poly(L-lysine) (PLL), previously shown to up-regulate mesenchymal condensation during developmental skeletogenesis in vitro, as an early chondrogenic stimulant of mesenchymal stem cells (MSCs). We characterized the effect of PLL incorporation on the swelling and degradation of oligo(poly(ethylene) glycol) fumarate) (OPF)-based hydrogels as functions of PLL molecular weight and dosage. Furthermore, we investigated the effect of PLL incorporation on the chondrogenic gene expression of hydrogel-encapsulated MSCs. The incorporation of PLL resulted in early enhancements of type II collagen and aggrecan gene expression and type II/type I collagen expression ratios when compared to blank controls. The presentation of PLL to MSCs encapsulated in OPF hydrogels also enhanced N-cadherin gene expression under certain culture conditions, suggesting that PLL may induce the expression of condensation markers in synthetic hydrogel systems. In summary, PLL can function as an inductive factor that primes the cellular microenvironment for early chondrogenic gene expression but may require additional biochemical factors for the generation of fully functional chondrocytes.
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Affiliation(s)
- Johnny Lam
- Department of Bioengineering, Rice University, Houston, TX, USA
| | - Elisa C Clark
- Department of Bioengineering, Rice University, Houston, TX, USA
| | - Eliza L S Fong
- Department of Bioengineering, Rice University, Houston, TX, USA
| | - Esther J Lee
- Department of Bioengineering, Rice University, Houston, TX, USA
| | - Steven Lu
- Department of Bioengineering, Rice University, Houston, TX, USA
| | - Yasuhiko Tabata
- Department of Biomaterials, Institute of Frontier Medical Sciences, Kyoto University, Kyoto, Japan
| | - Antonios G Mikos
- Department of Bioengineering, Rice University, Houston, TX, USA.
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38
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Gerges I, Tamplenizza M, Rossi E, Tocchio A, Martello F, Recordati C, Kumar D, Forsyth NR, Liu Y, Lenardi C. A Tailor-Made Synthetic Polymer for Cell Encapsulation: Design Rationale, Synthesis, Chemical-Physics and Biological Characterizations. Macromol Biosci 2016; 16:870-81. [DOI: 10.1002/mabi.201500386] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Revised: 01/11/2016] [Indexed: 01/01/2023]
Affiliation(s)
- Irini Gerges
- Fondazione Filarete per le Bioscienze e l'Innovazione; Viale Ortles 22/4 20139 Milan Italy
- Tensive s.r.l.; Via Timavo 34 20124 Milan Italy
| | - Margherita Tamplenizza
- Fondazione Filarete per le Bioscienze e l'Innovazione; Viale Ortles 22/4 20139 Milan Italy
- Tensive s.r.l.; Via Timavo 34 20124 Milan Italy
| | - Eleonora Rossi
- SEMM; European School of Molecular Medicine; Campus IFOM-IEO, Via Adamello 16 20139 Milano Italy
| | - Alessandro Tocchio
- SEMM; European School of Molecular Medicine; Campus IFOM-IEO, Via Adamello 16 20139 Milano Italy
| | - Federico Martello
- Fondazione Filarete per le Bioscienze e l'Innovazione; Viale Ortles 22/4 20139 Milan Italy
- Tensive s.r.l.; Via Timavo 34 20124 Milan Italy
| | - Camilla Recordati
- Fondazione Filarete per le Bioscienze e l'Innovazione; Viale Ortles 22/4 20139 Milan Italy
| | - Deepak Kumar
- Materials Science Centre; University of Manchester; Grosvenor Street Manchester M17HS Greater Manchester UK
| | - Nicholas R. Forsyth
- Guy Hilton Research Centre; Institute of Science and Technology in Medicine; University of Keele; Thornburrow Drive Stoke-on-Trent ST47QB Staffordshire UK
| | - Yang Liu
- Wolfson School of Mechanical and Manufacturing Engineering; Loughborough University; Ashby Rd Loughborough LE11 3TU Leicestershire UK
| | - Cristina Lenardi
- Fondazione Filarete per le Bioscienze e l'Innovazione; Viale Ortles 22/4 20139 Milan Italy
- CIMAINA; Dipartimento di Fisica; Università degli Studi di Milano; Via Celoria 16 20133 Milano Italy
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39
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Dey P, Schneider T, Chiappisi L, Gradzielski M, Schulze-Tanzil G, Haag R. Mimicking of Chondrocyte Microenvironment Using In Situ Forming Dendritic Polyglycerol Sulfate-Based Synthetic Polyanionic Hydrogels. Macromol Biosci 2016; 16:580-90. [DOI: 10.1002/mabi.201500377] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2015] [Revised: 11/18/2015] [Indexed: 11/05/2022]
Affiliation(s)
- Pradip Dey
- Institut für Chemie und Biochemie; Freie Universität Berlin; Takustr. 3 14195 Berlin Germany
| | - Tobias Schneider
- Institut für Chemie und Biochemie; Freie Universität Berlin; Takustr. 3 14195 Berlin Germany
- Klinik für Orthopädische; Unfall- und Wiederherstellungschirurgie; Charité-Universitätsmedizin Berlin Campus Benjamin Franklin; Garystrasse 5 14195 Berlin Germany
| | - Leonardo Chiappisi
- Stranski Laboratorium für Physikalische Chemie und Theoretische Chemie; Institut für Chemie; Technische Universität Berlin; Straße des 1, Juni 124, Sekr. TC7 10623 Berlin Germany
| | - Michael Gradzielski
- Stranski Laboratorium für Physikalische Chemie und Theoretische Chemie; Institut für Chemie; Technische Universität Berlin; Straße des 1, Juni 124, Sekr. TC7 10623 Berlin Germany
| | - Gundula Schulze-Tanzil
- Department of Anatomy; Paracelsus Medical University; Nuremberg General Hospital; Prof. Ernst Nathan Str. 1 90419 Nuremberg Germany
| | - Rainer Haag
- Institut für Chemie und Biochemie; Freie Universität Berlin; Takustr. 3 14195 Berlin Germany
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40
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Photo-cross-linked methacrylated polysaccharide solution blends with high chondrocyte viability, minimal swelling, and moduli similar to load bearing soft tissues. Eur Polym J 2015. [DOI: 10.1016/j.eurpolymj.2015.01.038] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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41
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Tatman PD, Gerull W, Sweeney-Easter S, Davis JI, Gee AO, Kim DH. Multiscale Biofabrication of Articular Cartilage: Bioinspired and Biomimetic Approaches. TISSUE ENGINEERING PART B-REVIEWS 2015. [PMID: 26200439 DOI: 10.1089/ten.teb.2015.0142] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Articular cartilage is the load-bearing tissue found inside all articulating joints of the body. It vastly reduces friction and allows for smooth gliding between contacting surfaces. The structure of articular cartilage matrix and cellular composition is zonal and is important for its mechanical properties. When cartilage becomes injured through trauma or disease, it has poor intrinsic healing capabilities. The spectrum of cartilage injury ranges from isolated areas of the joint to diffuse breakdown and the clinical appearance of osteoarthritis. Current clinical treatment options remain limited in their ability to restore cartilage to its normal functional state. This review focuses on the evolution of biomaterial scaffolds that have been used for functional cartilage tissue engineering. In particular, we highlight recent developments in multiscale biofabrication approaches attempting to recapitulate the complex 3D matrix of native articular cartilage tissue. Additionally, we focus on the application of these methods to engineering each zone of cartilage and engineering full-thickness osteochondral tissues for improved clinical implantation. These methods have shown the potential to control individual cell-to-scaffold interactions and drive progenitor cell differentiation into a chondrocyte lineage. The use of these bioinspired nanoengineered scaffolds hold promise for recreation of structure and function on the whole tissue level and may represent exciting new developments for future clinical applications for cartilage injury and restoration.
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Affiliation(s)
- Philip David Tatman
- 1 Department of Bioengineering, University of Washington , Seattle, Washington
| | - William Gerull
- 1 Department of Bioengineering, University of Washington , Seattle, Washington
| | - Sean Sweeney-Easter
- 1 Department of Bioengineering, University of Washington , Seattle, Washington
| | - Jeffrey Isaac Davis
- 1 Department of Bioengineering, University of Washington , Seattle, Washington
| | - Albert O Gee
- 2 Department of Orthopedics and Sports Medicine, University of Washington , Seattle, Washington
| | - Deok-Ho Kim
- 1 Department of Bioengineering, University of Washington , Seattle, Washington.,3 Institute for Stem Cell and Regenerative Medicine, University of Washington , Seattle, Washington
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Reimann S, Gröger D, Kühne C, Riese SB, Dernedde J, Haag R. Shell Cleavable Dendritic Polyglycerol Sulfates Show High Anti-Inflammatory Properties by Inhibiting L-Selectin Binding and Complement Activation. Adv Healthc Mater 2015; 4:2154-2162. [PMID: 26259636 DOI: 10.1002/adhm.201500503] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Indexed: 01/13/2023]
Abstract
A new class of fully synthetic shell cleavable multivalent polysulfates is prepared by introducing degradable linkers into a stable biocompatible dendritic polyglycerol scaffold and subsequent sulfation. The sulfated polymers show different degradation profiles, low anticoagulant and high anti-inflammatory properties, are able to efficiently bind to L-selectin and inhibit the complement activation at very low concentrations in vitro.
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Affiliation(s)
- Sabine Reimann
- Institute of Chemistry and Biochemistry; Freie Universität Berlin; Takustr. 3 14195 Berlin Germany
| | - Dominic Gröger
- Institute of Chemistry and Biochemistry; Freie Universität Berlin; Takustr. 3 14195 Berlin Germany
| | - Christian Kühne
- Institute of Laboratory Medicine; Clinical Chemistry and Pathobiochemistry; Charite-Universitätsmedizin Berlin; CVK; Augustenburger Platz 1 13353 Berlin Germany
| | - Sebastian B. Riese
- Institute of Laboratory Medicine; Clinical Chemistry and Pathobiochemistry; Charite-Universitätsmedizin Berlin; CVK; Augustenburger Platz 1 13353 Berlin Germany
| | - Jens Dernedde
- Institute of Laboratory Medicine; Clinical Chemistry and Pathobiochemistry; Charite-Universitätsmedizin Berlin; CVK; Augustenburger Platz 1 13353 Berlin Germany
| | - Rainer Haag
- Institute of Chemistry and Biochemistry; Freie Universität Berlin; Takustr. 3 14195 Berlin Germany
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43
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Chen D, Chang CC, Cooper B, Silvers A, Emrick T, Hayward RC. Photopatternable Biodegradable Aliphatic Polyester with Pendent Benzophenone Groups. Biomacromolecules 2015; 16:3329-35. [DOI: 10.1021/acs.biomac.5b00991] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Dayong Chen
- Department of Polymer Science
and Engineering, University of Massachusetts Amherst, 120 Governors
Drive, Amherst, Massachusetts 01003, United States
| | - Chia-Chih Chang
- Department of Polymer Science
and Engineering, University of Massachusetts Amherst, 120 Governors
Drive, Amherst, Massachusetts 01003, United States
| | - Beth Cooper
- Department of Polymer Science
and Engineering, University of Massachusetts Amherst, 120 Governors
Drive, Amherst, Massachusetts 01003, United States
| | - Angela Silvers
- Department of Polymer Science
and Engineering, University of Massachusetts Amherst, 120 Governors
Drive, Amherst, Massachusetts 01003, United States
| | - Todd Emrick
- Department of Polymer Science
and Engineering, University of Massachusetts Amherst, 120 Governors
Drive, Amherst, Massachusetts 01003, United States
| | - Ryan C. Hayward
- Department of Polymer Science
and Engineering, University of Massachusetts Amherst, 120 Governors
Drive, Amherst, Massachusetts 01003, United States
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44
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Ude CC, Ng MH, Chen CH, Htwe O, Amaramalar NS, Hassan S, Djordjevic I, Rani RA, Ahmad J, Yahya NM, Saim AB, Idrus RBH. Improved functional assessment of osteoarthritic knee joint after chondrogenically induced cell treatment. Osteoarthritis Cartilage 2015; 23:1294-306. [PMID: 25887366 DOI: 10.1016/j.joca.2015.04.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2014] [Revised: 03/30/2015] [Accepted: 04/02/2015] [Indexed: 02/02/2023]
Abstract
OBJECTIVES Our previous studies on osteoarthritis (OA) revealed positive outcome after chondrogenically induced cells treatment. Presently, the functional improvements of these treated OA knee joints were quantified followed by evaluation of the mechanical properties of the engineered cartilages. METHODS Baseline electromyogram (EMGs) were conducted at week 0 (pre-OA), on the locomotory muscles of nine un-castrated male sheep (Siamese long tail cross) divided into controls, adipose-derived stem cells (ADSCs) and bone marrow stem cells (BMSCs), before OA inductions. Subsequent recordings were performed at week 7 and week 31 which were post-OA and post-treatments. Afterwards, the compression tests of the regenerated cartilage were performed. RESULTS Post-treatment EMG analysis revealed that the control sheep retained significant reductions in amplitudes at the right medial gluteus, vastus lateralis and bicep femoris, whereas BMSCs and ADSCs samples had no further significant reductions (P < 0.05). Grossly and histologically, the treated knee joints demonstrated the presence of regenerated neo cartilages evidenced by the fluorescence of PKH26 tracker. Based on the International Cartilage Repair Society scores (ICRS), they had significantly lower grades than the controls (P < 0.05). The compression moduli of the native cartilages and the engineered cartilages differed significantly at the tibia plateau, patella femoral groove and the patella; whereas at the medial femoral condyle, they had similar moduli of 0.69 MPa and 0.40-0.64 MPa respectively. Their compression strengths at all four regions were within ±10 MPa. CONCLUSION The tissue engineered cartilages provided evidence of functional recoveries associated to the structural regenerations, and their mechanical properties were comparable with the native cartilage.
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Affiliation(s)
- C C Ude
- Tissue Engineering Centre, Universiti Kebangsaan Malaysia Medical Centre, Jalan Yaacob Latif, Bandar Tun Razak, Cheras, 56000 K.L, Malaysia; Department of Physiology, Universiti Kebangsaan Malaysia Medical Centre, Jalan Yaacob Latif, Bandar Tun Razak, Cheras 56000, K. L, Malaysia.
| | - M H Ng
- Tissue Engineering Centre, Universiti Kebangsaan Malaysia Medical Centre, Jalan Yaacob Latif, Bandar Tun Razak, Cheras, 56000 K.L, Malaysia.
| | - C H Chen
- Department of Clinical Veterinary, Faculty of Veterinary Medicine Universiti Putra Malaysia, 43400 Serdang, Malaysia.
| | - O Htwe
- Rehabilitation Unit, Department of Orthopedic & Traumatology, Universiti Kebangsaan Malaysia Medical Center, Jalan Yaacob Latif, Bandar Tun Razak, Cheras, 56000 K.L, Malaysia.
| | - N S Amaramalar
- Rehabilitation Unit, Department of Orthopedic & Traumatology, Universiti Kebangsaan Malaysia Medical Center, Jalan Yaacob Latif, Bandar Tun Razak, Cheras, 56000 K.L, Malaysia.
| | - S Hassan
- Neurology Clinics, Faculty of Medicine Universiti Putra Malaysia, 43400 Serdang, Malaysia.
| | - I Djordjevic
- Department of Biomedical Engineering, Faculty of Engineering University of Malaya, 50603 K.L, Malaysia.
| | - R A Rani
- Department of Orthopedic & Traumatology, Universiti Kebangsaan Malaysia Medical Center, Jalan Yaacob Latif, Bandar Tun Razak, Cheras, 56000 K.L, Malaysia.
| | - J Ahmad
- Department of Orthopedic & Traumatology, Universiti Kebangsaan Malaysia Medical Center, Jalan Yaacob Latif, Bandar Tun Razak, Cheras, 56000 K.L, Malaysia.
| | - N M Yahya
- Department of Orthopedic & Traumatology, Universiti Kebangsaan Malaysia Medical Center, Jalan Yaacob Latif, Bandar Tun Razak, Cheras, 56000 K.L, Malaysia.
| | - A B Saim
- Tissue Engineering Centre, Universiti Kebangsaan Malaysia Medical Centre, Jalan Yaacob Latif, Bandar Tun Razak, Cheras, 56000 K.L, Malaysia; ENT Consultant Clinic, Ampang Putri Specialist Hospital, 68000 Ampang, Malaysia.
| | - R B Hj Idrus
- Department of Physiology, Universiti Kebangsaan Malaysia Medical Centre, Jalan Yaacob Latif, Bandar Tun Razak, Cheras 56000, K. L, Malaysia; Department of Clinical Veterinary, Faculty of Veterinary Medicine Universiti Putra Malaysia, 43400 Serdang, Malaysia.
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45
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Steinmetz NJ, Aisenbrey EA, Westbrook KK, Qi HJ, Bryant SJ. Mechanical loading regulates human MSC differentiation in a multi-layer hydrogel for osteochondral tissue engineering. Acta Biomater 2015; 21:142-53. [PMID: 25900444 DOI: 10.1016/j.actbio.2015.04.015] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2015] [Revised: 04/11/2015] [Accepted: 04/13/2015] [Indexed: 12/15/2022]
Abstract
A bioinspired multi-layer hydrogel was developed for the encapsulation of human mesenchymal stem cells (hMSCs) as a platform for osteochondral tissue engineering. The spatial presentation of biochemical cues, via incorporation of extracellular matrix analogs, and mechanical cues, via both hydrogel crosslink density and externally applied mechanical loads, were characterized in each layer. A simple sequential photopolymerization method was employed to form stable poly(ethylene glycol)-based hydrogels with a soft cartilage-like layer of chondroitin sulfate and low RGD concentrations, a stiff bone-like layer with high RGD concentrations, and an intermediate interfacial layer. Under a compressive load, the variation in hydrogel stiffness within each layer produced high strains in the soft cartilage-like layer, low strains in the stiff bone-like layer, and moderate strains in the interfacial layer. When hMSC-laden hydrogels were cultured statically in osteochondral differentiation media, the local biochemical and matrix stiffness cues were not sufficient to spatially guide hMSC differentiation after 21 days. However dynamic mechanical stimulation led to differentially high expression of collagens with collagen II in the cartilage-like layer, collagen X in the interfacial layer and collagen I in the bone-like layer and mineral deposits localized to the bone layer. Overall, these findings point to external mechanical stimulation as a potent regulator of hMSC differentiation toward osteochondral cellular phenotypes.
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Nafea EH, Poole-Warren LA, Martens PJ. Bioactivity of permselective PVA hydrogels with mixed ECM analogues. J Biomed Mater Res A 2015; 103:3727-35. [DOI: 10.1002/jbm.a.35510] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Revised: 05/17/2015] [Accepted: 05/19/2015] [Indexed: 11/07/2022]
Affiliation(s)
- Eman H. Nafea
- Graduate School of Biomedical Engineering; UNSW Australia; Sydney New South Wales 2052 Australia
| | - Laura A. Poole-Warren
- Graduate School of Biomedical Engineering; UNSW Australia; Sydney New South Wales 2052 Australia
| | - Penny J. Martens
- Graduate School of Biomedical Engineering; UNSW Australia; Sydney New South Wales 2052 Australia
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Khanlari A, Suekama TC, Detamore MS, Gehrke SH. Structurally diverse and readily tunable photocrosslinked chondroitin sulfate based copolymers. ACTA ACUST UNITED AC 2015. [DOI: 10.1002/polb.23751] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Anahita Khanlari
- Department of Chemical and Petroleum Engineering; University of Kansas; Learned Hall, Room 4163 Lawrence Kansas 66045
| | - Tiffany C. Suekama
- Department of Chemical and Petroleum Engineering; University of Kansas; Learned Hall, Room 4163 Lawrence Kansas 66045
| | - Michael S. Detamore
- Department of Chemical and Petroleum Engineering; University of Kansas; Learned Hall, Room 4163 Lawrence Kansas 66045
- Bioengineering Program; University of Kansas; Lawrence Kansas 66045
| | - Stevin H. Gehrke
- Department of Chemical and Petroleum Engineering; University of Kansas; Learned Hall, Room 4163 Lawrence Kansas 66045
- Bioengineering Program; University of Kansas; Lawrence Kansas 66045
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48
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Hou R, Nie L, Du G, Xiong X, Fu J. Natural polysaccharides promote chondrocyte adhesion and proliferation on magnetic nanoparticle/PVA composite hydrogels. Colloids Surf B Biointerfaces 2015; 132:146-54. [PMID: 26037704 DOI: 10.1016/j.colsurfb.2015.05.008] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2015] [Revised: 04/15/2015] [Accepted: 05/07/2015] [Indexed: 01/17/2023]
Abstract
This paper aims to investigate the synergistic effects of natural polysaccharides and inorganic nanoparticles on cell adhesion and growth on intrinsically cell non-adhesive polyvinyl alcohol (PVA) hydrogels. Previously, we have demonstrated that Fe2O3 and hydroxyapatite (nHAP) nanoparticles are effective in increasing osteoblast growth on PVA hydrogels. Herein, we blended hyaluronic acid (HA) and chondroitin sulfate (CS), two important components of cartilage extracellular matrix (ECM), with Fe2O3/nHAP/PVA hydrogels. The presence of these natural polyelectrolytes dramatically increased the pore size and the equilibrium swelling ratio (ESR) while maintaining excellent compressive strength of hydrogels. Chondrocytes were seeded and cultured on composite PVA hydrogels containing Fe2O3, nHAP and Fe2O3/nHAP hybrids and Fe2O3/nHAP with HA or CS. Confocal laser scanning microscopy (CLSM) and cell counting kit-8 (CCK-8) assay consistently confirmed that the addition of HA or CS promotes chondrocyte adhesion and growth on PVA and composite hydrogels. Particularly, the combination of HA and CS exhibited further promotion to cell adhesion and proliferation compared with any single polysaccharide. The results demonstrated that the magnetic composite nanoparticles and polysaccharides provided synergistic promotion to cell adhesion and growth. Such polysaccharide-augmented composite hydrogels may have potentials in biomedical applications.
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Affiliation(s)
- Ruixia Hou
- Polymers and Composites Division, Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Ningbo 315201, PR China
| | - Lei Nie
- Polymers and Composites Division, Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Ningbo 315201, PR China
| | - Gaolai Du
- Polymers and Composites Division, Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Ningbo 315201, PR China
| | - Xiaopeng Xiong
- School of Materials Science and Engineering, Xiamen University, Xiamen 361005, PR China
| | - Jun Fu
- Polymers and Composites Division, Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Ningbo 315201, PR China.
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Derakhshan ZH, Shaghaghi B, Asl MP, Majidi M, Ghazizadeh L, Chegini A, Bonakdar S. In Situ Forming Hydrogel Based on Chondroitin Sulfate–Hydroxyapatite for Bone Tissue Engineering. INT J POLYM MATER PO 2015. [DOI: 10.1080/00914037.2015.1030662] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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50
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Thermogelling bioadhesive scaffolds for intervertebral disk tissue engineering: preliminary in vitro comparison of aldehyde-based versus alginate microparticle-mediated adhesion. Acta Biomater 2015; 16:71-80. [PMID: 25641647 DOI: 10.1016/j.actbio.2015.01.025] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Revised: 01/10/2015] [Accepted: 01/20/2015] [Indexed: 01/08/2023]
Abstract
Tissue engineering of certain load-bearing parts of the body can be dependent on scaffold adhesion or integration with the surrounding tissue to prevent dislocation. One such area is the regeneration of the intervertebral disc (IVD). In this work, poly(N-isopropylacrylamide) (PNIPAAm) was grafted with chondroitin sulfate (CS) (PNIPAAm-g-CS) and blended with aldehyde-modified CS to generate an injectable polymer that can form covalent bonds with tissue upon contact. However, the presence of the reactive aldehyde groups can compromise the viability of encapsulated cells. Thus, liposomes were encapsulated in the blend, designed to deliver the ECM derivative, gelatin, after the polymer has adhered to tissue and reached physiological temperature. This work is based on the hypothesis that the discharge of gelatin will enhance the biocompatibility of the material by covalently reacting with, or "end-capping", the aldehyde functionalities within the gel that did not participate in bonding with tissue upon contact. As a comparison, formulations were also created without CS aldehyde and with an alternative adhesion mediator, mucoadhesive calcium alginate particles. Gels formed from blends of PNIPAAm-g-CS and CS aldehyde exhibited increased adhesive strength compared to PNIPAAm-g-CS alone (p<0.05). However, the addition of gelatin-loaded liposomes to the blend significantly decreased the adhesive strength (p<0.05). The encapsulation of alginate microparticles within PNIPAAm-g-CS gels caused the tensile strength to increase twofold over that of PNIPAAm-g-CS blends with CS aldehyde (p<0.05). Cytocompatibility studies indicate that formulations containing alginate particles exhibit reduced cytotoxicity over those containing CS aldehyde. Overall, the results indicated that the adhesives composed of alginate microparticles encapsulated in PNIPAAm-g-CS have the potential to serve as a scaffold for IVD regeneration.
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