1
|
Nian G, Kim J, Bao X, Suo Z. Making Highly Elastic and Tough Hydrogels from Doughs. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2206577. [PMID: 36126085 DOI: 10.1002/adma.202206577] [Citation(s) in RCA: 42] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 09/11/2022] [Indexed: 06/15/2023]
Abstract
A hydrogel is often fabricated from preexisting polymer chains by covalently crosslinking them into a polymer network. The crosslinks make the hydrogel swell-resistant but brittle. This conflict is resolved here by making a hydrogel from a dough. The dough is formed by mixing long polymer chains with a small amount of water and photoinitiator. The dough is then homogenized by kneading and annealing at elevated temperatures, during which the crowded polymer chains densely entangle. The polymer chains are then sparsely crosslinked into a polymer network under an ultraviolet lamp, and submerged in water to swell to equilibrium. The resulting hydrogel is both swell-resistant and tough. The hydrogel also has near-perfect elasticity, high strength, high fatigue resistance, and low friction. The method is demonstrated with two widely used polymers, poly(ethylene glycol) and cellulose. These hydrogels have never been made swell-resistant, elastic, and tough before. The method is generally applicable to synthetic and natural polymers, and is compatible with industrial processing technologies, opening doors to the development of sustainable, high-performance hydrogels.
Collapse
Affiliation(s)
- Guodong Nian
- John A. Paulson School of Engineering and Applied Sciences, Kavli Institute for Bionano Science and Technology, Harvard University, Cambridge, MA, 02138, USA
| | - Junsoo Kim
- John A. Paulson School of Engineering and Applied Sciences, Kavli Institute for Bionano Science and Technology, Harvard University, Cambridge, MA, 02138, USA
| | - Xianyang Bao
- John A. Paulson School of Engineering and Applied Sciences, Kavli Institute for Bionano Science and Technology, Harvard University, Cambridge, MA, 02138, USA
- Centre for Polymer from Renewable Resource, SFSE, South China University of Technology, Guangzhou, 510640, China
| | - Zhigang Suo
- John A. Paulson School of Engineering and Applied Sciences, Kavli Institute for Bionano Science and Technology, Harvard University, Cambridge, MA, 02138, USA
| |
Collapse
|
2
|
Elangwe CN, Morozkina SN, Olekhnovich RO, Krasichkov A, Polyakova VO, Uspenskaya MV. A Review on Chitosan and Cellulose Hydrogels for Wound Dressings. Polymers (Basel) 2022; 14:polym14235163. [PMID: 36501559 PMCID: PMC9741326 DOI: 10.3390/polym14235163] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 11/20/2022] [Accepted: 11/23/2022] [Indexed: 11/30/2022] Open
Abstract
Wound management remains a challenging issue around the world, although a lot of wound dressing materials have been produced for the treatment of chronic and acute wounds. Wound healing is a highly dynamic and complex regulatory process that involves four principal integrated phases, including hemostasis, inflammation, proliferation, and remodeling. Chronic non-healing wounds are wounds that heal significantly more slowly, fail to progress to all the phases of the normal wound healing process, and are usually stalled at the inflammatory phase. These wounds cause a lot of challenges to patients, such as severe emotional and physical stress and generate a considerable financial burden on patients and the general public healthcare system. It has been reported that about 1-2% of the global population suffers from chronic non-healing wounds during their lifetime in developed nations. Traditional wound dressings are dry, and therefore cannot provide moist environment for wound healing and do not possess antibacterial properties. Wound dressings that are currently used consist of bandages, films, foams, patches and hydrogels. Currently, hydrogels are gaining much attention as a result of their water-holding capacity, providing a moist wound-healing milieu. Chitosan is a biopolymer that has gained a lot of attention recently in the pharmaceutical industry due to its unique chemical and antibacterial nature. However, with its poor mechanical properties, chitosan is incorporated with other biopolymers, such as the cellulose of desirable biocompatibility, at the same time having the improved mechanical and physical properties of the hydrogels. This review focuses on the study of biopolymers, such as cellulose and chitosan hydrogels, for wound treatment.
Collapse
Affiliation(s)
- Collins N. Elangwe
- Chemical Engineering Center, ITMO University, Kronverkskiy Prospect, 49A, Saint Petersburg 197101, Russia
- Correspondence: ; Tel.: +7-960-272-3495
| | - Svetlana N. Morozkina
- Chemical Engineering Center, ITMO University, Kronverkskiy Prospect, 49A, Saint Petersburg 197101, Russia
| | - Roman O. Olekhnovich
- Chemical Engineering Center, ITMO University, Kronverkskiy Prospect, 49A, Saint Petersburg 197101, Russia
| | - Alexander Krasichkov
- Departments of Radio Engineering Systems, Electrotechnical University “LETI”, Prof. Popova Street 5F, Saint Petersburg 197022, Russia
| | - Victoriya O. Polyakova
- St. Petersburg Research Institute of Phthisiopulmonology, Ligovsky 2-4, Saint Petersburg 191036, Russia
| | - Mayya V. Uspenskaya
- Chemical Engineering Center, ITMO University, Kronverkskiy Prospect, 49A, Saint Petersburg 197101, Russia
| |
Collapse
|
3
|
Demott CJ, Jones MR, Chesney CD, Yeisley DJ, Culibrk RA, Hahn MS, Grunlan MA. Ultra-High Modulus Hydrogels Mimicking Cartilage of the Human Body. Macromol Biosci 2022; 22:e2200283. [PMID: 36040017 DOI: 10.1002/mabi.202200283] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 08/12/2022] [Indexed: 12/25/2022]
Abstract
The human body is comprised of numerous types of cartilage with a range of high moduli, despite their high hydration. Owing to the limitations of cartilage tissue healing and biological grafting procedures, synthetic replacements have emerged but are limited by poorly matched moduli. While conventional hydrogels can achieve similar hydration to cartilage tissues, their moduli are substantially inferior. Herein, triple network (TN) hydrogels are prepared to synergistically leverage intra-network electrostatic repulsive and hydrophobic interactions, as well as inter-network electrostatic attractive interactions. They are comprised of an anionic 1st network, a neutral 2nd network (capable of hydrophobic associations), and a cationic 3rd network. Collectively, these interactions act synergistically as effective, yet dynamic crosslinks. By tuning the concentration of the cationic 3rd network, these TN hydrogels achieve high moduli of ≈1.5 to ≈3.5 MPa without diminishing cartilage-like water contents (≈80%), strengths, or toughness values. This unprecedented combination of properties poises these TN hydrogels as cartilage substitutes in applications spanning articulating joints, intervertebral discs (IVDs), trachea, and temporomandibular joint disc (TMJ).
Collapse
Affiliation(s)
- Connor J Demott
- Department of Biomedical Engineering, Texas A&M University, College Station, TX, 77843-3003, USA
| | - McKenzie R Jones
- Department of Biomedical Engineering, Texas A&M University, College Station, TX, 77843-3003, USA
| | - Caleb D Chesney
- Department of Biomedical Engineering, Texas A&M University, College Station, TX, 77843-3003, USA
| | - Daniel J Yeisley
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, NY, 12180-3590, USA
| | - Robert A Culibrk
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, NY, 12180-3590, USA
| | - Mariah S Hahn
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, NY, 12180-3590, USA
| | - Melissa A Grunlan
- Department of Biomedical Engineering, Department of Materials Science & Engineering, and Department of Chemistry, Texas A&M University, College Station, TX, 77843-3003, USA
| |
Collapse
|
4
|
Cakir Hatir P. Light‐induced
hydrogels derived from poly(ethylene glycol) and acrylated methyl ricinoleate as biomaterials. J Appl Polym Sci 2022. [DOI: 10.1002/app.52754] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Pinar Cakir Hatir
- Department of Biomedical Engineering, Faculty of Engineering and Natural Sciences Istinye University Istanbul Turkey
| |
Collapse
|
5
|
Li J, Kim C, Pan CC, Babian A, Lui E, Young JL, Moeinzadeh S, Kim S, Yang YP. Hybprinting for musculoskeletal tissue engineering. iScience 2022; 25:104229. [PMID: 35494239 PMCID: PMC9051619 DOI: 10.1016/j.isci.2022.104229] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This review presents bioprinting methods, biomaterials, and printing strategies that may be used for composite tissue constructs for musculoskeletal applications. The printing methods discussed include those that are suitable for acellular and cellular components, and the biomaterials include soft and rigid components that are suitable for soft and/or hard tissues. We also present strategies that focus on the integration of cell-laden soft and acellular rigid components under a single printing platform. Given the structural and functional complexity of native musculoskeletal tissue, we envision that hybrid bioprinting, referred to as hybprinting, could provide unprecedented potential by combining different materials and bioprinting techniques to engineer and assemble modular tissues.
Collapse
Affiliation(s)
- Jiannan Li
- Department of Orthopaedic Surgery, School of Medicine, Stanford University, 300 Pasteur Drive BMI 258, Stanford, CA 94305, USA
| | - Carolyn Kim
- Department of Orthopaedic Surgery, School of Medicine, Stanford University, 300 Pasteur Drive BMI 258, Stanford, CA 94305, USA.,Department of Mechanical Engineering, 416 Escondido Mall, Stanford University, Stanford, CA 94305, USA
| | - Chi-Chun Pan
- Department of Orthopaedic Surgery, School of Medicine, Stanford University, 300 Pasteur Drive BMI 258, Stanford, CA 94305, USA.,Department of Mechanical Engineering, 416 Escondido Mall, Stanford University, Stanford, CA 94305, USA
| | - Aaron Babian
- Department of Biological Sciences, University of California, Davis CA 95616, USA
| | - Elaine Lui
- Department of Orthopaedic Surgery, School of Medicine, Stanford University, 300 Pasteur Drive BMI 258, Stanford, CA 94305, USA.,Department of Mechanical Engineering, 416 Escondido Mall, Stanford University, Stanford, CA 94305, USA
| | - Jeffrey L Young
- Department of Orthopaedic Surgery, School of Medicine, Stanford University, 300 Pasteur Drive BMI 258, Stanford, CA 94305, USA
| | - Seyedsina Moeinzadeh
- Department of Orthopaedic Surgery, School of Medicine, Stanford University, 300 Pasteur Drive BMI 258, Stanford, CA 94305, USA
| | - Sungwoo Kim
- Department of Orthopaedic Surgery, School of Medicine, Stanford University, 300 Pasteur Drive BMI 258, Stanford, CA 94305, USA
| | - Yunzhi Peter Yang
- Department of Orthopaedic Surgery, School of Medicine, Stanford University, 300 Pasteur Drive BMI 258, Stanford, CA 94305, USA.,Department of Materials Science and Engineering, Stanford University, 496 Lomita Mall, Stanford, CA 94305, USA.,Department of Bioengineering, Stanford University, 443 Via Ortega, Stanford, CA 94305, USA
| |
Collapse
|
6
|
Beltran FO, Houk CJ, Grunlan MA. Bioactive Siloxane-Containing Shape-Memory Polymer (SMP) Scaffolds with Tunable Degradation Rates. ACS Biomater Sci Eng 2021; 7:1631-1639. [PMID: 33667062 DOI: 10.1021/acsbiomaterials.1c00113] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A material-guided, regenerative approach to heal cranial defects requires a scaffold that cannot only achieve conformal fit into irregular geometries but also has bioactivity and suitable resorption rates. We have previously reported "self-fitting" shape-memory polymer (SMP) scaffolds based on poly(ε-caprolactone) diacrylate (PCL-DA) that shape recover to fill irregular defect geometries. However, PCL-DA scaffolds lack innate bioactivity and degrade very slowly. Polydimethylsiloxane (PDMS) has been shown to impart innate bioactivity and modify degradation rates when combined with organic cross-linked networks. Thus, this work reports the introduction of PDMS segments to form PCL/PDMS SMP scaffolds. These were prepared as co-matrices with three types of macromers to systematically alter PDMS content and cross-link density. Specifically, PCL90-DA was combined with linear-PDMS66-dimethacrylate (DMA) or 4-armed star-PDMS66-tetramethacrylate (TMA) macromers at 90:10, 75:25, and 60:40 wt % ratios. Additionally, a triblock macromer (AcO-PCL45-b-PDMS66-b-PCL45-OAc), having a 65:35 wt % ratio PCL/PDMS, was used. Scaffolds exhibited pore interconnectivity and uniform pore sizes and further maintained excellent shape-memory behavior. Degradation rates increased with PDMS content and reduced cross-link density, with phase separation contributing to this effect. Irrespective of PDMS content, all PCL/PDMS scaffolds exhibited the formation of carbonated hydroxyapatite (HAp) following exposure to simulated body fluid (SBF). While inclusion of PDMS expectedly reduced scaffold modulus and strength, mineralization increased these properties and, in some cases, to values exceeding or similar to the PCL-DA, which did not mineralize.
Collapse
Affiliation(s)
- Felipe O Beltran
- Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Christopher J Houk
- Department of Biomedical Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Melissa A Grunlan
- Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77843, United States.,Department of Biomedical Engineering, Texas A&M University, College Station, Texas 77843, United States.,Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| |
Collapse
|
7
|
Frassica MT, Jones SK, Suriboot J, Arabiyat AS, Ramirez EM, Culibrk RA, Hahn MS, Grunlan MA. Enhanced Osteogenic Potential of Phosphonated-Siloxane Hydrogel Scaffolds. Biomacromolecules 2020; 21:5189-5199. [DOI: 10.1021/acs.biomac.0c01293] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Michael T. Frassica
- Department of Biomedical Engineering, Texas A&M University, College Station, Texas 77843-3120, United States
| | - Sarah K. Jones
- Department of Biomedical Engineering, Texas A&M University, College Station, Texas 77843-3120, United States
| | - Jakkrit Suriboot
- Department of Biomedical Engineering, Texas A&M University, College Station, Texas 77843-3120, United States
| | - Ahmad S. Arabiyat
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180-31590, United States
| | - Esteban M. Ramirez
- Department of Biomedical Engineering, Texas A&M University, College Station, Texas 77843-3120, United States
| | - Robert A. Culibrk
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180-31590, United States
| | - Mariah S. Hahn
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180-31590, United States
| | - Melissa A. Grunlan
- Department of Biomedical Engineering, Texas A&M University, College Station, Texas 77843-3120, United States
- Department of Materials Science & Engineering, Texas A&M University, College Station, Texas 77843-3003, United States
- Department of Chemistry, Texas A&M University, College Station, Texas 77843-3255, United States
| |
Collapse
|
8
|
Zhu H, Yang H, Ma Y, Lu TJ, Xu F, Genin GM, Lin M. Spatiotemporally Controlled Photoresponsive Hydrogels: Design and Predictive Modeling from Processing through Application. ADVANCED FUNCTIONAL MATERIALS 2020; 30:2000639. [PMID: 32802013 PMCID: PMC7418561 DOI: 10.1002/adfm.202000639] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 03/16/2020] [Indexed: 05/16/2023]
Abstract
Photoresponsive hydrogels (PRHs) are soft materials whose mechanical and chemical properties can be tuned spatially and temporally with relative ease. Both photo-crosslinkable and photodegradable hydrogels find utility in a range of biomedical applications that require tissue-like properties or programmable responses. Progress in engineering with PRHs is facilitated by the development of theoretical tools that enable optimization of their photochemistry, polymer matrices, nanofillers, and architecture. This review brings together models and design principles that enable key applications of PRHs in tissue engineering, drug delivery, and soft robotics, and highlights ongoing challenges in both modeling and application.
Collapse
Affiliation(s)
- Hongyuan Zhu
- The Key Laboratory of Biomedical Information Engineering of Ministry of EducationSchool of Life Science and TechnologyXi'an Jiaotong UniversityXi'an710049P. R. China
- Bioinspired Engineering & Biomechanics Center (BEBC)Xi'an Jiaotong UniversityXi'an710049P. R. China
| | - Haiqian Yang
- Bioinspired Engineering & Biomechanics Center (BEBC)Xi'an Jiaotong UniversityXi'an710049P. R. China
| | - Yufei Ma
- The Key Laboratory of Biomedical Information Engineering of Ministry of EducationSchool of Life Science and TechnologyXi'an Jiaotong UniversityXi'an710049P. R. China
- Bioinspired Engineering & Biomechanics Center (BEBC)Xi'an Jiaotong UniversityXi'an710049P. R. China
| | - Tian Jian Lu
- State Key Laboratory of Mechanics and Control of Mechanical StructuresNanjing University of Aeronautics and AstronauticsNanjing210016P. R. China
- MOE Key Laboratory for Multifunctional Materials and StructuresXi'an Jiaotong UniversityXi'an710049P. R. China
| | - Feng Xu
- The Key Laboratory of Biomedical Information Engineering of Ministry of EducationSchool of Life Science and TechnologyXi'an Jiaotong UniversityXi'an710049P. R. China
- Bioinspired Engineering & Biomechanics Center (BEBC)Xi'an Jiaotong UniversityXi'an710049P. R. China
| | - Guy M. Genin
- The Key Laboratory of Biomedical Information Engineering of Ministry of EducationSchool of Life Science and TechnologyXi'an Jiaotong UniversityXi'an710049P. R. China
- Bioinspired Engineering & Biomechanics Center (BEBC)Xi'an Jiaotong UniversityXi'an710049P. R. China
- Department of Mechanical Engineering & Materials ScienceWashington University in St. LouisSt. LouisMO63130USA
- NSF Science and Technology Center for Engineering MechanobiologyWashington University in St. LouisSt. LouisMO63130USA
| | - Min Lin
- The Key Laboratory of Biomedical Information Engineering of Ministry of EducationSchool of Life Science and TechnologyXi'an Jiaotong UniversityXi'an710049P. R. China
- Bioinspired Engineering & Biomechanics Center (BEBC)Xi'an Jiaotong UniversityXi'an710049P. R. China
| |
Collapse
|
9
|
Della Sala F, Biondi M, Guarnieri D, Borzacchiello A, Ambrosio L, Mayol L. Mechanical behavior of bioactive poly(ethylene glycol) diacrylate matrices for biomedical application. J Mech Behav Biomed Mater 2020; 110:103885. [PMID: 32957192 DOI: 10.1016/j.jmbbm.2020.103885] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 05/12/2020] [Accepted: 05/25/2020] [Indexed: 12/20/2022]
Abstract
The biomedical applications of physically entangled polymeric hydrogels are generally limited due to their weak mechanical properties, rapid swelling and dissolution in physiologically relevant environment. Chemical crosslinking helps stabilizing hydrogel structure and enhancing mechanical properties, thereby allowing a higher stability in phisiological environment. In this context, it is known that the mechanical properties of the hydrogel are affected by both the molecular weight (MW) of the starting polymer and the concentration of the crosslinker. Here, our aim was to assess the influence of polymer MW and concentration in the precursor solution on the mechanical features of the final hydrogel and their influence on cells-material interaction. In detail, 3D synthetic matrices based on poly(ethylene glycol) diacrylate (PEGDA) at two molecular weights (PEG 700 and PEG 3400) and at three different concentrations (10, 20, 40 w/v %), which were photopolymerized using darocour as an initiator, were studied. Then, infrared and swelling analyses, along with a comprehensive mechanical characterization of the obtained hydrogels (i.e. oscillatory shear and confined compression tests), were performed. Finally, to evaluate the influence of the mechanical features on the biological behaviour, the hydrogels were characterized in terms of cell adhesion percentage and cell viability after functionalizing the substrates with RGD peptide at three different concentrations. Results have demonstrated that both the Young's modulus (E) in compression and the elastic modulus (G') in shear of the hydrogels increase with increasing polymer precursor concentration. E decreased as MW increased, and the differences are more relevant for more concentrated hydrogels. On the contrary, G' appears to increase with increasing PEGDA MW and in particular for the lowest polymer precursor concentration. The biological results have demonstrated that cells cultured for longer times seem to prefer PEG 3400 hydrogels with a larger mesh size structure that posses higher viscoelastic properties in shear.
Collapse
Affiliation(s)
- Francesca Della Sala
- Istituto per i Polimeri, Compositi e Biomateriali, Consiglio Nazionale delle Ricerche (IPCB-CNR), Viale J.F. Kennedy 54, Napoli, Italy; University of Campania "Luigi Vanvitelli", Caserta, Italy
| | - Marco Biondi
- Dipartimento di Farmacia, Università di Napoli Federico II, Via Domenico Montesano 49, Napoli, Italy; Centro di Ricerca Interdipartimentale sui Biomateriali (CRIB), Università di Napoli Federico II, Piazzale Tecchio 80, Napoli, Italy
| | - Daniela Guarnieri
- Dipartimento di Chimica e Biologia A. Zambelli, Università di Salerno, via Giovanni Paolo II 132, Fisciano, Salerno, I-84084, Italy
| | - Assunta Borzacchiello
- Istituto per i Polimeri, Compositi e Biomateriali, Consiglio Nazionale delle Ricerche (IPCB-CNR), Viale J.F. Kennedy 54, Napoli, Italy.
| | - Luigi Ambrosio
- Istituto per i Polimeri, Compositi e Biomateriali, Consiglio Nazionale delle Ricerche (IPCB-CNR), Viale J.F. Kennedy 54, Napoli, Italy
| | - Laura Mayol
- Dipartimento di Farmacia, Università di Napoli Federico II, Via Domenico Montesano 49, Napoli, Italy; Centro di Ricerca Interdipartimentale sui Biomateriali (CRIB), Università di Napoli Federico II, Piazzale Tecchio 80, Napoli, Italy
| |
Collapse
|
10
|
Liu S, Cao H, Guo R, Li H, Lu C, Yang G, Nie J, Wang F, Dong N, Shi J, Shi F. Effects of the proportion of two different cross-linkers on the material and biological properties of enzymatically degradable PEG hydrogels. Polym Degrad Stab 2020. [DOI: 10.1016/j.polymdegradstab.2019.109067] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|
11
|
Incorporation of a silicon-based polymer to PEG-DA templated hydrogel scaffolds for bioactivity and osteoinductivity. Acta Biomater 2019; 99:100-109. [PMID: 31536841 DOI: 10.1016/j.actbio.2019.09.018] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 08/26/2019] [Accepted: 09/12/2019] [Indexed: 12/28/2022]
Abstract
A scaffold that is inherently bioactive, osteoinductive and osteoconductive may guide mesenchymal stem cells (MSCs) to regenerate bone tissue in the absence of exogenous growth factors. Previously, we established that hydrogel scaffolds formed by crosslinking methacrylated star poly(dimethylsiloxane) (PDMSstar-MA) with diacrylated poly(ethylene glycol) (PEG-DA) promote bone bonding by induction of hydroxyapatite formation ("bioactive") and promote MSC lineage progression toward osteoblast-like fate ("osteoinductive"). Herein, we have combined solvent induced phase separation (SIPS) with a fused salt template to create PDMSstar-PEG hydrogel scaffolds with controlled PDMSstar-MA distribution as well as interconnected macropores of a tunable size to allow for subsequent cell seeding and neotissue infiltration ("osteoconductive"). Scaffolds were prepared with PDMSstar-MA of two number average molecular weights (Mns) (2k and 7k) with varying PDMSstar-MA:PEG-DA ratios and template salt sizes. The distribution of PDMSstar-MA within the hydrogels was examined as well as pore size, percent interconnectivity, dynamic and static moduli, hydration, degradation and in vitro bioactivity (i.e. mineralization when exposed to simulated body fluid, SBF). Finally, cell culture with seeded human bone marrow-derived MSCs (hBMSCs) was used to confirm non-cytotoxicity and characterize osteoinductivity. Tunable, interconnected macropores were achieved by utilization of a fused salt template of a specified salt size during fabrication. Distribution of PDMSstar-MA within the PEG-DA matrix improved for the lower Mn and contributed to differences in specific material properties (e.g. local modulus) and cellular response. However, all templated SIPS PDMSstar-PEG hydrogels were confirmed to be bioactive, non-cytotoxic and displayed PDMSstar-MA dose-dependent osteogenesis. STATEMENT OF SIGNIFICANCE: A tissue engineering scaffold that can inherently guide mesenchymal stem cells (MSCs) to regenerate bone tissue without growth factors would be a more cost-effective and safe strategy for bone repair. Typically, glass/ceramic fillers are utilized to achieve this through their ability to induce hydroxyapatite formation ("bioactive") and promote MSC differentiation to an osteoblast-like fate ("osteoinductive"). Herein, we have fabricated an interconnected, macroporous PEG-DA hydrogel scaffold that utilizes PDMSstar-MA as a bioactive and osteoinductive scaffold component. We were able to show that these PDMSstar-PEG hydrogels maintain several key material characteristics for bone repair. Further, bioactivity and osteoinductivity were simultaneously achieved in human bone marrow-derived MSC culture, representing a notable achievement for an exclusively material-based strategy.
Collapse
|
12
|
Frassica MT, Jones SK, Diaz-Rodriguez P, Hahn MS, Grunlan MA. Incorporation of a silicon-based polymer to PEG-DA templated hydrogel scaffolds for bioactivity and osteoinductivity. Acta Biomater 2019. [PMID: 31536841 DOI: 10.1016/j.actbio.2019.09.018.] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/01/2022]
Abstract
A scaffold that is inherently bioactive, osteoinductive and osteoconductive may guide mesenchymal stem cells (MSCs) to regenerate bone tissue in the absence of exogenous growth factors. Previously, we established that hydrogel scaffolds formed by crosslinking methacrylated star poly(dimethylsiloxane) (PDMSstar-MA) with diacrylated poly(ethylene glycol) (PEG-DA) promote bone bonding by induction of hydroxyapatite formation ("bioactive") and promote MSC lineage progression toward osteoblast-like fate ("osteoinductive"). Herein, we have combined solvent induced phase separation (SIPS) with a fused salt template to create PDMSstar-PEG hydrogel scaffolds with controlled PDMSstar-MA distribution as well as interconnected macropores of a tunable size to allow for subsequent cell seeding and neotissue infiltration ("osteoconductive"). Scaffolds were prepared with PDMSstar-MA of two number average molecular weights (Mns) (2k and 7k) with varying PDMSstar-MA:PEG-DA ratios and template salt sizes. The distribution of PDMSstar-MA within the hydrogels was examined as well as pore size, percent interconnectivity, dynamic and static moduli, hydration, degradation and in vitro bioactivity (i.e. mineralization when exposed to simulated body fluid, SBF). Finally, cell culture with seeded human bone marrow-derived MSCs (hBMSCs) was used to confirm non-cytotoxicity and characterize osteoinductivity. Tunable, interconnected macropores were achieved by utilization of a fused salt template of a specified salt size during fabrication. Distribution of PDMSstar-MA within the PEG-DA matrix improved for the lower Mn and contributed to differences in specific material properties (e.g. local modulus) and cellular response. However, all templated SIPS PDMSstar-PEG hydrogels were confirmed to be bioactive, non-cytotoxic and displayed PDMSstar-MA dose-dependent osteogenesis. STATEMENT OF SIGNIFICANCE: A tissue engineering scaffold that can inherently guide mesenchymal stem cells (MSCs) to regenerate bone tissue without growth factors would be a more cost-effective and safe strategy for bone repair. Typically, glass/ceramic fillers are utilized to achieve this through their ability to induce hydroxyapatite formation ("bioactive") and promote MSC differentiation to an osteoblast-like fate ("osteoinductive"). Herein, we have fabricated an interconnected, macroporous PEG-DA hydrogel scaffold that utilizes PDMSstar-MA as a bioactive and osteoinductive scaffold component. We were able to show that these PDMSstar-PEG hydrogels maintain several key material characteristics for bone repair. Further, bioactivity and osteoinductivity were simultaneously achieved in human bone marrow-derived MSC culture, representing a notable achievement for an exclusively material-based strategy.
Collapse
Affiliation(s)
- Michael T Frassica
- Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843-3120, USA
| | - Sarah K Jones
- Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843-3120, USA
| | - Patricia Diaz-Rodriguez
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180-31590, USA
| | - Mariah S Hahn
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180-31590, USA
| | - Melissa A Grunlan
- Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843-3120, USA; Department of Materials Science & Engineering, Texas A&M University, College Station, TX 77843-3003, USA; Department of Chemistry, Texas A&M University, College Station, TX 77843-3255, USA.
| |
Collapse
|
13
|
Diaz-Rodriguez P, Erndt-Marino JD, Gharat T, Munoz Pinto DJ, Samavedi S, Bearden R, Grunlan MA, Saunders WB, Hahn MS. Toward zonally tailored scaffolds for osteochondral differentiation of synovial mesenchymal stem cells. J Biomed Mater Res B Appl Biomater 2019; 107:2019-2029. [PMID: 30549205 PMCID: PMC6934364 DOI: 10.1002/jbm.b.34293] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Revised: 10/22/2018] [Accepted: 11/10/2018] [Indexed: 12/15/2022]
Abstract
Synovium-derived mesenchymal stem cells (SMSCs) are an emerging cell source for regenerative medicine applications, including osteochondral defect (OCD) repair. However, in contrast to bone marrow MSCs, scaffold compositions which promote SMSC chondrogenesis/osteogenesis are still being identified. In the present manuscript, we examine poly(ethylene) glycol (PEG)-based scaffolds containing zonally-specific biochemical cues to guide SMSC osteochondral differentiation. Specifically, SMSCs were encapsulated in PEG-based scaffolds incorporating glycosaminoglycans (hyaluronan or chondroitin-6-sulfate [CSC]), low-dose of chondrogenic and osteogenic growth factors (TGFβ1 and BMP2, respectively), or osteoinductive poly(dimethylsiloxane) (PDMS). Initial studies suggested that PEG-CSC-TGFβ1 scaffolds promoted enhanced SMSC chondrogenic differentiation, as assessed by significant increases in Sox9 and aggrecan. Conversely, PEG-PDMS-BMP2 scaffolds stimulated increased levels of osteoblastic markers with significant mineral deposition. A "Transition" zone formulation was then developed containing a graded mixture of the chondrogenic and osteogenic signals present in the PEG-CSC-TGFβ1 and PEG-PDMS-BMP2 constructs. SMSCs within the "Transition" formulation displayed a phenotypic profile similar to hypertrophic chondrocytes, with the highest expression of collagen X, intermediate levels of osteopontin, and mineralization levels equivalent to "bone" formulations. Overall, these results suggest that a graded transition from PEG-CSC-TGFβ1 to PEG-PDMS-BMP2 scaffolds elicits a gradual SMSC phenotypic shift from chondrocyte to hypertrophic chondrocyte to osteoblast-like. As such, further development of these scaffold formulations for use in SMSC-based OCD repair is warranted. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater 107B: 2019-2029, 2019.
Collapse
Affiliation(s)
| | - Josh D Erndt-Marino
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, New York
| | - Tanmay Gharat
- Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, New York
| | - Dany J Munoz Pinto
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, New York
| | - Satyavrata Samavedi
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, New York
| | - Robert Bearden
- Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas
| | - Melissa A Grunlan
- Department of Biomedical Engineering, Texas A&M University, College Station, Texas
| | - W Brian Saunders
- Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas
| | - Mariah S Hahn
- Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, New York
| |
Collapse
|
14
|
Marchiori G, Berni M, Boi M, Filardo G. Cartilage mechanical tests: Evolution of current standards for cartilage repair and tissue engineering. A literature review. Clin Biomech (Bristol, Avon) 2019; 68:58-72. [PMID: 31158591 DOI: 10.1016/j.clinbiomech.2019.05.019] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Revised: 05/07/2019] [Accepted: 05/10/2019] [Indexed: 02/07/2023]
Abstract
BACKGROUND Repair procedures and tissue engineering are solutions available in the clinical practice for the treatment of damaged articular cartilage. Regulatory bodies defined the requirements that any products, intended to regenerate cartilage, should have to be applied. In order to verify these requirements, the Food and Drug Administration (FDA, USA) and the International Standard Organization (ISO) indicated some Standard tests, which allow evaluating, in a reproducible way, the performances of scaffolds/treatments for cartilage tissue regeneration. METHODS A review of the literature about cartilage mechanical characterization found 394 studies, from 1970 to date. They were classified by material (simulated/animal/human cartilage) and method (theoretical/applied; static/dynamic; standard/non-standard study), and analyzed by nation and year of publication. FINDINGS While Standard methods for cartilage mechanical characterization still refer to studies developed in the eighties, expertise and interest on cartilage mechanics research are evolving continuously and internationally, with studies both in vitro - on human and animal tissues - and in silico, dealing with tissue function and modelling, using static and dynamic loading conditions. INTERPRETATION there is a consensus on the importance of mechanical characterization that should be considered to evaluate cartilage treatments. Still, relative Standards need to be updated to describe advanced constructs and procedures for cartilage regeneration in a more exhaustive way. The use of the more complex, fibre-reinforced biphasic model, instead of the standard simple biphasic model, to describe cartilage response to loading, and the standardisation of dynamic tests can represent a first step in this direction.
Collapse
Affiliation(s)
- Gregorio Marchiori
- IRCCS Istituto Ortopedico Rizzoli, Laboratory of Biomechanics and Technology Innovation, Via di Barbiano 1/10, 40136 Bologna, Italy.
| | - Matteo Berni
- IRCCS Istituto Ortopedico Rizzoli, Laboratory of Biomechanics and Technology Innovation, Via di Barbiano 1/10, 40136 Bologna, Italy
| | - Marco Boi
- IRCCS Istituto Ortopedico Rizzoli, NanoBiotechnology Laboratory (NaBi), Via di Barbiano 1/10, 40136 Bologna, Italy
| | - Giuseppe Filardo
- IRCCS Istituto Ortopedico Rizzoli, NanoBiotechnology Laboratory (NaBi), Via di Barbiano 1/10, 40136 Bologna, Italy; IRCCS Istituto Ortopedico Rizzoli, Applied and Translational Research Center, Via di Barbiano 1/10, 40136 Bologna, Italy
| |
Collapse
|
15
|
Means AK, Dong P, Clubb FJ, Friedemann MC, Colvin LE, Shrode CA, Coté GL, Grunlan MA. A self-cleaning, mechanically robust membrane for minimizing the foreign body reaction: towards extending the lifetime of sub-Q glucose biosensors. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2019; 30:79. [PMID: 31240399 PMCID: PMC6988489 DOI: 10.1007/s10856-019-6282-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Accepted: 06/17/2019] [Indexed: 06/09/2023]
Abstract
Long-term, subcutaneously implanted continuous glucose biosensors have the potential to improve diabetes management and reduce associated complications. However, the innate foreign body reaction (FBR) both alters the local glucose concentrations in the surrounding tissues and compromises glucose diffusion to the biosensor due to the recruitment of high-metabolizing inflammatory cells and the formation of a dense, collagenous fibrous capsule. Minimizing the FBR has mainly focused on "passively antifouling" materials that reduce initial cellular attachment, including poly(ethylene glycol) (PEG). Instead, the membrane reported herein utilizes an "actively antifouling" or "self-cleaning" mechanism to inhibit cellular attachment through continuous, cyclic deswelling/reswelling in response to normal temperature fluctuations of the subcutaneous tissue. This thermoresponsive double network (DN) membrane is based on N-isopropylacrylamide (NIPAAm) and 2-acrylamido-2-methylpropane sulfonic acid (AMPS) (75:25 and 100:0 NIPAAm:AMPS in the 1st and 2nd networks, respectively; "DN-25%"). The extent of the FBR reaction of a subcutaneously implanted DN-25% cylindrical membrane was evaluated in rodents in parallel with a PEG-diacrylate (PEG-DA) hydrogel as an established benchmark biocompatible control. Notably, the DN-25% implants were more than 25× stronger and tougher than the PEG-DA implants while maintaining a modulus near that of subcutaneous tissue. From examining the FBR at 7, 30 and 90 days after implantation, the thermoresponsive DN-25% implants demonstrated a rapid healing response and a minimal fibrous capsule (~20-25 µm), similar to the PEG-DA implants. Thus, the dynamic self-cleaning mechanism of the DN-25% membranes represents a new approach to limit the FBR while achieving the durability necessary for long-term implantable glucose biosensors.
Collapse
Affiliation(s)
- A Kristen Means
- Department of Materials Science & Engineering, Texas A&M University, College Station, TX, 77843-3003, USA
| | - Ping Dong
- Department of Biomedical Engineering, Texas A&M University, College Station, TX, 77843-3120, USA
| | - Fred J Clubb
- Department of Biomedical Engineering, Texas A&M University, College Station, TX, 77843-3120, USA
- Department of Veterinary Pathobiology, Texas A&M University, College Station, TX, 77843-4467, USA
| | - Molly C Friedemann
- Department of Veterinary Pathobiology, Texas A&M University, College Station, TX, 77843-4467, USA
| | - Lydia E Colvin
- Department of Biomedical Engineering, Texas A&M University, College Station, TX, 77843-3120, USA
| | - Courtney A Shrode
- Department of Biomedical Engineering, Texas A&M University, College Station, TX, 77843-3120, USA
| | - Gerard L Coté
- Department of Biomedical Engineering, Texas A&M University, College Station, TX, 77843-3120, USA
- Center for Remote Health Technologies Systems, Texas A&M University, College Station, TX, 77843-3120, USA
| | - Melissa A Grunlan
- Department of Materials Science & Engineering, Texas A&M University, College Station, TX, 77843-3003, USA.
- Department of Biomedical Engineering, Texas A&M University, College Station, TX, 77843-3120, USA.
- Center for Remote Health Technologies Systems, Texas A&M University, College Station, TX, 77843-3120, USA.
- Department of Chemistry, Texas A&M University, College Station, TX, 77843-3255, USA.
| |
Collapse
|
16
|
De France KJ, Badv M, Dorogin J, Siebers E, Panchal V, Babi M, Moran-Mirabal J, Lawlor M, Cranston ED, Hoare T. Tissue Response and Biodistribution of Injectable Cellulose Nanocrystal Composite Hydrogels. ACS Biomater Sci Eng 2019; 5:2235-2246. [PMID: 33405775 DOI: 10.1021/acsbiomaterials.9b00522] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Interest in cellulose nanocrystal (CNC)-based hydrogels for drug delivery, tissue engineering, and other biomedical applications has rapidly expanded despite the minimal in vivo research reported to date. Herein, we assess both in vitro protein adsorption and cell adhesion as well as in vivo subcutaneous tissue responses and CNC biodistribution of injectable CNC-poly(oligoethylene glycol methacrylate) (POEGMA) hydrogels. Hydrogels with different PEG side chain lengths, CNC loadings, and with or without in situ magnetic alignment of the CNCs are compared. CNC loading has a minimal impact on protein adsorption but significantly increases cell adhesion. In vivo, both CNC-only and CNC-POEGMA injections largely stay at their subcutaneous injection site over one month, with minimal bioaccumulation of CNCs in any typical clearance organ. CNC-POEGMA hydrogels exhibit mild acute and chronic inflammatory responses, although significant fibroblast penetration was observed with the magnetically aligned hydrogels. Collectively, these results suggest that CNC-POEGMA hydrogels offer promise in practical biomedical applications.
Collapse
Affiliation(s)
| | | | | | - Emily Siebers
- Department of Pathology and Laboratory Medicine and Neuroscience Research Center, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, Wisconsin 53226, United States
| | | | | | | | - Michael Lawlor
- Department of Pathology and Laboratory Medicine and Neuroscience Research Center, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, Wisconsin 53226, United States
| | - Emily D Cranston
- Department of Wood Science, University of British Columbia, 2424 Main Mall, Vancouver, British Columbia V6T 1Z4, Canada.,Department of Chemical and Biological Engineering, University of British Columbia, 2360 East Mall, Vancouver, British Columbus V6T 1Z3, Canada
| | | |
Collapse
|
17
|
Facile fabrication of superporous and biocompatible hydrogel scaffolds for artificial corneal periphery. Colloids Surf B Biointerfaces 2019; 175:26-35. [DOI: 10.1016/j.colsurfb.2018.11.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 10/04/2018] [Accepted: 11/06/2018] [Indexed: 12/18/2022]
|
18
|
Saroia J, Yanen W, Wei Q, Zhang K, Lu T, Zhang B. A review on biocompatibility nature of hydrogels with 3D printing techniques, tissue engineering application and its future prospective. Biodes Manuf 2018. [DOI: 10.1007/s42242-018-0029-7] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
|
19
|
Kamaldinov T, Erndt-Marino J, Diaz-Rodriguez P, Chen H, Gharat T, Munoz-Pinto D, Arduini B, Hahn MS. Tuning Forkhead Box D3 overexpression to promote specific osteogenic differentiation of human embryonic stem cells while reducing pluripotency in a three-dimensional culture system. J Tissue Eng Regen Med 2018; 12:2256-2265. [PMID: 30350469 DOI: 10.1002/term.2757] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 08/15/2018] [Accepted: 10/18/2018] [Indexed: 12/15/2022]
Abstract
Clinical use of human embryonic stem cells (hESCs) in bone regeneration applications requires that their osteogenic differentiation be highly controllable as well as time- and cost-effective. The main goals of the current work were thus (a) to assess whether overexpression of pluripotency regulator Forkhead Box D3 (FOXD3) can enhance the osteogenic commitment of hESCs seeded in three-dimensional (3D) scaffolds and (b) to evaluate if the degree of FOXD3 overexpression regulates the strength and specificity of hESC osteogenic commitment. In conducting these studies, an interpenetrating hydrogel network consisting of poly(ethylene glycol) diacrylate and collagen I was utilized as a 3D culture platform. Expression of osteogenic, chondrogenic, pluripotency, and germ layer markers by encapsulated hESCs was measured after 2 weeks of culture in osteogenic medium in the presence or absence doxycycline-induced FOXD3 transgene expression. Towards the first goal, FOXD3 overexpression initiated 24 hr prior to hESC encapsulation, relative to unstimulated controls, resulted in upregulation of osteogenic markers and enhanced calcium deposition, without promoting off-target effects. However, when initiation of FOXD3 overexpression was increased from 24 to 48 hr prior to encapsulation, hESC osteogenic commitment was not further enhanced and off-target effects were noted. Specifically, relative to 24-hr prestimulation, initiation of FOXD3 overexpression 48 hr prior to encapsulation yielded increased expression of pluripotency markers while reducing mesodermal but increasing endodermal germ layer marker expression. Combined, the current results indicate that the controlled overexpression of FOXD3 warrants further investigation as a mechanism to guide enhanced hESC osteogenic commitment.
Collapse
Affiliation(s)
- Timothy Kamaldinov
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, New York
| | - Josh Erndt-Marino
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, New York
| | | | - Hongyu Chen
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, New York
| | - Tanmay Gharat
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, New York
| | - Dany Munoz-Pinto
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, New York
| | - Brigitte Arduini
- Rensselaer Center for Stem Cell Research, Rensselaer Polytechnic Institute, Troy, New York
| | - Mariah S Hahn
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, New York
| |
Collapse
|
20
|
Zhang Z, Hou Z, Qiao C, Zhu C, Zhou K, Xu X, Li T, Xu J. Electrostatic and hydrophobic controlled self-assembly of PDMS-E grafted gelatin for self-cleaning application. Colloids Surf B Biointerfaces 2018; 171:647-655. [DOI: 10.1016/j.colsurfb.2018.08.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2018] [Revised: 07/16/2018] [Accepted: 08/06/2018] [Indexed: 12/29/2022]
|
21
|
Gharat TP, Diaz-Rodriguez P, Erndt-Marino JD, Jimenez Vergara AC, Munoz Pinto DJ, Bearden RN, Huggins SS, Grunlan M, Saunders WB, Hahn MS. A canine in vitro model for evaluation of marrow-derived mesenchymal stromal cell-based bone scaffolds. J Biomed Mater Res A 2018; 106:2382-2393. [PMID: 29633508 PMCID: PMC6158043 DOI: 10.1002/jbm.a.36430] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Revised: 02/18/2018] [Accepted: 03/28/2018] [Indexed: 12/23/2022]
Abstract
Tissue engineered bone grafts based on bone marrow mesenchymal stromal cells (MSCs) are being actively developed for craniomaxillofacial (CMF) applications. As for all tissue engineered implants, the bone-regenerating capacity of these MSC-based grafts must first be evaluated in animal models prior to human trials. Canine models have traditionally resulted in improved clinical translation of CMF grafts relative to other animal models. However, the utility of canine CMF models for evaluating MSC-based bone grafts rests on canine MSCs (cMSCs) responding in a similar manner to scaffold-based stimuli as human MSCs (hMSCs). Herein, cMSC and hMSC responses to polyethylene glycol (PEG)-based scaffolds were therefore compared in the presence or absence of osteoinductive polydimethylsiloxane (PDMS). Notably, the conjugation of PDMS to PEG-based constructs resulted in increases in both cMSC and hMSC osteopontin and calcium deposition. Based on these results, cMSCs were further used to assess the efficacy of tethered bone morphogenic protein 2 (BMP2) in enhancing PEG-PDMS scaffold osteoinductivity. Addition of low doses of tethered BMP2 (100 ng/mL) to PEG-PDMS systems increased cMSC expression of osterix and osteopontin compared to both PEG-PDMS and PEG-BMP2 controls. Furthermore, these increases were comparable to effects seen with up to five-times higher BMP2 doses noted in literature. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 106A:2382-2393, 2018.
Collapse
Affiliation(s)
- Tanmay P. Gharat
- Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, New York, USA
| | | | - Josh D. Erndt-Marino
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, New York, USA
| | | | - Dany J. Munoz Pinto
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, New York, USA
| | - Robert N. Bearden
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas, USA
| | - Shannon S. Huggins
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas, USA
| | - Melissa Grunlan
- Department of Biomedical Engineering, Texas A&M University, College Station, Texas, USA
| | - W. Brian Saunders
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas, USA
| | - Mariah S. Hahn
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, New York, USA
| |
Collapse
|
22
|
Wang S, Mao S, Li M, Li HF, Lin JM. Near-physiological microenvironment simulation on chip to evaluate drug resistance of different loci in tumour mass. Talanta 2018; 191:67-73. [PMID: 30262100 DOI: 10.1016/j.talanta.2018.08.016] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 07/27/2018] [Accepted: 08/03/2018] [Indexed: 12/17/2022]
Abstract
Developing a bio-functional model in vitro to study cancer resistance, which is a big challenge for clinical cancer therapy, is of great interest. Such reliable model requires appropriate drug diffusion kinetics simulation and a microenvironment that allows cell-cell and cell-matrix interactions. In this work, a special hydrogel-based three-dimensional (3D) microfluidic chip was constructed to simulate tumour-vascular microenvironment. The self-healing hydrogel supports long-time cell survival and proliferation, effective cellular metabolism of cancer drugs and cell-cell interaction between different types of cells. In the effective near-physiological tumour-vascular microenvironment, the endothelial and fibroblast cells are spread on different sides of a porous membrane, while sensitive and resistant breast tumour cells are separately cultured in the dynamic hydrogel consisting of glycol chitosan and telechelic difunctional poly (ethylene glycol) in the upper chambers. Nutrients and drugs are introduced through the bottom channel and diffuse into the cancer cells. Doxorubicin molecules pass first through blood vessel endothelial cells and act on the tumour cells surrounded by fibroblasts. Tumour cells respond differently to drug when they are cultured in the microenvironment. Sensitive breast tumour cells have a 47% increase in viability than those cultured without fibroblasts and endothelial cells. Both sensitive and resistant tumour cells can be analysed under the same chemical environment. This work represents a multi-functional in vitro platform that allows near-physiological simulation, effective drug metabolism and cellular response to extracellular stimuli and has great potential to make drug discovery speedy and precise.
Collapse
Affiliation(s)
- Shiqi Wang
- Department of Chemistry, Beijing Key Laboratory of Microanalytical Methods and Instrumentation, MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing 100084, China
| | - Sifeng Mao
- Department of Chemistry, Beijing Key Laboratory of Microanalytical Methods and Instrumentation, MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing 100084, China
| | - Min Li
- Department of Chemistry, Beijing Key Laboratory of Microanalytical Methods and Instrumentation, MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing 100084, China
| | - Hai-Fang Li
- Department of Chemistry, Beijing Key Laboratory of Microanalytical Methods and Instrumentation, MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing 100084, China.
| | - Jin-Ming Lin
- Department of Chemistry, Beijing Key Laboratory of Microanalytical Methods and Instrumentation, MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing 100084, China.
| |
Collapse
|
23
|
Rapid and gentle hydrogel encapsulation of living organisms enables long-term microscopy over multiple hours. Commun Biol 2018; 1:73. [PMID: 30271954 PMCID: PMC6123791 DOI: 10.1038/s42003-018-0079-6] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Accepted: 05/31/2018] [Indexed: 12/14/2022] Open
Abstract
Imaging living organisms at high spatial resolution requires effective and innocuous immobilization. Long-term imaging places further demands on sample mounting with minimal perturbation of the organism. Here we present a simple, inexpensive method for rapid encapsulation of small animals of any developmental stage within a photo-crosslinked polyethylene glycol (PEG) hydrogel, gently restricting movement within their confined spaces. Immobilized animals maintain their original morphology in a hydrated environment compatible with chemical treatment, optical stimulation, and light-sheet microscopy. We demonstrate prolonged three-dimensional imaging of neural responses in the nematode Caenorhabditis elegans, recovery of viable organisms after 24 h, and imaging of larger squid hatchlings. We characterize a range of hydrogel and illumination conditions for immobilization quality, and identify paralytic-free conditions suitable for high-resolution single-cell imaging. Overall, PEG hydrogel encapsulation provides fast, versatile, and gentle mounting of small living organisms, from yeast to zebrafish, for continuous observation over hours. Kyra Burnett et al. present a simple and economical method to encapsulate small living organisms for long-term microscopy in a photo-crosslinked polyethylene glycol hydrogel. This method provides a fast and gentle mounting for continuous imaging over hours, and works with light-sheet microscopy and optogenetic stimulation.
Collapse
|
24
|
Nam C, Zhang G, Chung TCM. Polyolefin-based interpenetrating polymer network absorbent for crude oil entrapment and recovery in aqueous system. JOURNAL OF HAZARDOUS MATERIALS 2018; 351:285-292. [PMID: 29554525 DOI: 10.1016/j.jhazmat.2018.03.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2017] [Revised: 03/01/2018] [Accepted: 03/03/2018] [Indexed: 06/08/2023]
Abstract
In this research, a series of different two polyolefin-based interlaced polymer network material was prepared with a semi-crystalline linear low density polyethylene (LLDPE, thermoplastic) and a crosslinked 1-decene/divinylbenzene (1-D/DVB, elastomer) having high crude oil absorption capacity. The prepared absorbents, LLDPE/D/DVB, were characterized by NMR, TEM, contact angle measurement and TGA analysis. It was observed that the mixing ratio of two interlaced polymer network played a crucial role in determining its crude oil absorption capacity. The swelling capacity of absorbent prepared from a 1:1 mixing of LLDPE and D/DVB (0.2 ml) exhibit high removal efficiency in crude oil absorption over 40 g/g at both 25 °C and 0 °C. The removal of the absorbed crude oil from the water surface is effective. As the absorbent made of polyolefin materials have pure hydrocarbon content, offer significant advantages such as high absorption capacity, simple recovery, and recyclability.
Collapse
Affiliation(s)
- Changwoo Nam
- Materials Science and Engineering, The Pennsylvania State University, University Park, PA, 16802, USA.
| | - Gang Zhang
- Materials Science and Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - T C Mike Chung
- Materials Science and Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| |
Collapse
|
25
|
Xia S, Song S, Ren X, Gao G. Highly tough, anti-fatigue and rapidly self-recoverable hydrogels reinforced with core-shell inorganic-organic hybrid latex particles. SOFT MATTER 2017; 13:6059-6067. [PMID: 28776059 DOI: 10.1039/c7sm01253e] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The introduction of SiO2 particles as crosslinking points into hydrogels has been recognized as a suitable way for toughening hydrogels, due to their versatile functionalization and large specific surface area. However, chemically linked SiO2 nanocomposite hydrogels often exhibited negligible fatigue resistance and poor self-recoverable properties due to the irreversible cleavage of covalent bonds. Here, we proposed a novel strategy to improve stretchability, fatigue resistance and self-recoverable properties of hydrogels by using SiO2-g-poly(butyl acrylate) core-shell inorganic-organic hybrid latex particles as hydrophobic crosslinking centers for hydrophobic association. The obtained hydrogel could distribute the surrounding applied stress by disentanglement of the hybrid latex particles from hydrophobic segments. Based on this strategy, the formulated hydrogels showed an excellent tensile strength of 1.48 MPa, superior stretchability of 2511% and remarkable toughness of 12.62 MJ m-3. Moreover, the hydrogels owned extraordinary anti-fatigue, rapid self-recovery and puncture resistance properties. Therefore, this strategy provided a novel pathway for developing advanced soft materials with potential applications in biomedical engineering, such as tendons, muscles, cartilages, etc.
Collapse
Affiliation(s)
- Shan Xia
- Polymeric and Soft Materials Laboratory, School of Chemical Engineering Advanced Institute of Materials Science, Changchun University of Technology, NO. 2055, Yan'an Street, Changchun, P. R. China.
| | | | | | | |
Collapse
|
26
|
Bakaic E, Smeets NMB, Badv M, Dodd M, Barrigar O, Siebers E, Lawlor M, Sheardown H, Hoare T. Injectable and Degradable Poly(Oligoethylene glycol methacrylate) Hydrogels with Tunable Charge Densities as Adhesive Peptide-Free Cell Scaffolds. ACS Biomater Sci Eng 2017; 4:3713-3725. [PMID: 33429602 DOI: 10.1021/acsbiomaterials.7b00397] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Injectable, dual-responsive, and degradable poly(oligo ethylene glycol methacrylate) (POEGMA) hydrogels are demonstrated to offer potential for cell delivery. Charged groups were incorporated into hydrazide and aldehyde-functionalized thermoresponsive POEGMA gel precursor polymers via the copolymerization of N,N'-dimethylaminoethyl methacrylate (DMAEMA) or acrylic acid (AA) to create dual-temperature/pH-responsive in situ gelling hydrogels that can be injected via narrow gauge needles. The incorporation of charge significantly broadens the swelling, degradation, and rheological profiles achievable with injectable POEGMA hydrogels without significantly increasing nonspecific protein adsorption or chronic inflammatory responses following in vivo subcutaneous injection. However, significantly different cell responses are observed upon charge incorporation, with charged gels significantly improving 3T3 mouse fibroblast cell adhesion in 2D and successfully delivering viable and proliferating ARPE-19 human retinal epithelial cells via an "all-synthetic" matrix that does not require the incorporation of cell-adhesive peptides.
Collapse
Affiliation(s)
| | | | | | | | | | - Emily Siebers
- Department of Pathology and Laboratory Medicine and Neuroscience Research Center, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, Wisconsin 53226, United States
| | - Michael Lawlor
- Department of Pathology and Laboratory Medicine and Neuroscience Research Center, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, Wisconsin 53226, United States
| | | | | |
Collapse
|
27
|
Biocompatibility of hydrogel-based scaffolds for tissue engineering applications. Biotechnol Adv 2017; 35:530-544. [DOI: 10.1016/j.biotechadv.2017.05.006] [Citation(s) in RCA: 407] [Impact Index Per Article: 58.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2016] [Revised: 05/08/2017] [Accepted: 05/22/2017] [Indexed: 12/15/2022]
|
28
|
Wang G, Zhu Y, Zhai Y, Wang W, Du Z, Qin J. Polyglycerol modified polysiloxane surfactants: Their adsorption and aggregation behavior in aqueous solution. J IND ENG CHEM 2017. [DOI: 10.1016/j.jiec.2016.11.023] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
29
|
Huq NA, Ekblad JR, Leonard AT, Scalfani VF, Bailey TS. Phototunable Thermoplastic Elastomer Hydrogel Networks. Macromolecules 2017. [DOI: 10.1021/acs.macromol.6b02005] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Nabila A. Huq
- Department
of Chemical and Biological Engineering, Colorado State University, Fort
Collins, Colorado 80521, United States
| | - John R. Ekblad
- Department
of Chemical and Biological Engineering, Colorado State University, Fort
Collins, Colorado 80521, United States
| | - Alex T. Leonard
- Department
of Chemical and Biological Engineering, Colorado State University, Fort
Collins, Colorado 80521, United States
| | - Vincent F. Scalfani
- University
Libraries, Rodgers Library for Science and Engineering, University of Alabama, Tuscaloosa, Alabama 35487, United States
| | - Travis S. Bailey
- Department
of Chemical and Biological Engineering, Colorado State University, Fort
Collins, Colorado 80521, United States
| |
Collapse
|
30
|
Challenges for Cartilage Regeneration. SPRINGER SERIES IN BIOMATERIALS SCIENCE AND ENGINEERING 2017. [DOI: 10.1007/978-3-662-53574-5_14] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|
31
|
Koehler J, Wallmeyer L, Hedtrich S, Goepferich AM, Brandl FP. pH-Modulating Poly(ethylene glycol)/Alginate Hydrogel Dressings for the Treatment of Chronic Wounds. Macromol Biosci 2016; 17. [PMID: 27995736 DOI: 10.1002/mabi.201600369] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Revised: 10/25/2016] [Indexed: 12/20/2022]
Abstract
The development of chronic wounds has been frequently associated with alkaline pH values. The application of pH-modulating wound dressings can, therefore, be a promising treatment option to promote normal wound healing. This study reports on the development and characterization of acidic hydrogel dressings based on interpenetrating poly(ethylene glycol) diacrylate/acrylic acid/alginate networks. The incorporation of ionizable carboxylic acid groups results in high liquid uptake up to 500%. The combination of two separate polymer networks significantly improves the tensile and compressive stability. In a 2D cell migration assay, the application of hydrogels (0% to 1.5% acrylic acid) results in complete "wound" closure; hydrogels with 0.25% acrylic acid significantly increase the cell migration velocity to 19.8 ± 1.9 µm h-1 . The most promising formulation (hydrogels with 0.25% acrylic acid) is tested on 3D human skin constructs, increasing keratinocyte ingrowth into the wound by 164%.
Collapse
Affiliation(s)
- Julia Koehler
- Department of Pharmaceutical Technology, University of Regensburg, Universitätsstr. 31, 93053, Regensburg, Germany
| | - Leonie Wallmeyer
- Institute of Pharmacy, Pharmacology and Toxicology, Freie Universität Berlin, Königin-Luise-Str. 2+4, 14195, Berlin, Germany
| | - Sarah Hedtrich
- Institute of Pharmacy, Pharmacology and Toxicology, Freie Universität Berlin, Königin-Luise-Str. 2+4, 14195, Berlin, Germany
| | - Achim M Goepferich
- Department of Pharmaceutical Technology, University of Regensburg, Universitätsstr. 31, 93053, Regensburg, Germany
| | - Ferdinand P Brandl
- Department of Pharmaceutical Technology, University of Regensburg, Universitätsstr. 31, 93053, Regensburg, Germany
| |
Collapse
|
32
|
Nam C, Zimudzi TJ, Geise GM, Hickner MA. Increased Hydrogel Swelling Induced by Absorption of Small Molecules. ACS APPLIED MATERIALS & INTERFACES 2016; 8:14263-14270. [PMID: 27159118 DOI: 10.1021/acsami.6b02069] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The water and small molecule uptake behavior of amphiphilic diacrylate terminated poly(dimethylsiloxane) (PDMSDA)/poly(ethylene glycol diacrylate) (PEGDA) cross-linked hydrogels were studied using attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectroscopy. These hydrogel networks absorbed more water as the PEGDA content of the network increased. In contrast to typical osmotic deswelling behavior that occurs when liquid water equilibrated hydrogels are immersed in small molecule solutions with water activities less than unity, water-swollen gels immersed in 2-acrylamido-2-methylpropanesulfonic acid (AMPS-H) solutions rapidly regained their water content within 4 min following an initial deswelling response. In situ ATR-FTIR analysis of the hydrogel film during the dynamic swelling experiment indicated that small molecule absorption into the gel played an important role in inducing gel reswelling in low water activity solutions. This aspect of polymer gel water uptake and interaction with small molecules is important for optimizing hydrogel coatings and hydrophilic polymer applications where there is an interaction between the internal chemical structure of the gel and electrolytes or other molecules in solution.
Collapse
Affiliation(s)
- Changwoo Nam
- Department of Materials Science and Engineering, The Pennsylvania State University , University Park, Pennsylvania 16802, United States
| | - Tawanda J Zimudzi
- Department of Chemistry, The Pennsylvania State University , University Park, Pennsylvania 16802, United States
| | - Geoffrey M Geise
- Department of Chemical Engineering, The University of Virginia , Charlottesville, Virginia 22904, United States
| | - Michael A Hickner
- Department of Materials Science and Engineering, The Pennsylvania State University , University Park, Pennsylvania 16802, United States
| |
Collapse
|
33
|
Oligo-polyethene glycol (PEG)-modified 14-deoxy-11,12-didehydroandrographolide derivatives: synthesis, solubility and anti-bacterial activity. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.03.025] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
|
34
|
Hashimoto Y, Mukai SA, Sawada SI, Sasaki Y, Akiyoshi K. Advanced Artificial Extracellular Matrices Using Amphiphilic Nanogel-Cross-Linked Thin Films To Anchor Adhesion Proteins and Cytokines. ACS Biomater Sci Eng 2016; 2:375-384. [DOI: 10.1021/acsbiomaterials.5b00485] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Yoshihide Hashimoto
- Department
of Polymer Chemistry, Graduate School of
Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
- Japan
Science and Technology Agency (JST), The Exploratory Research for
Advanced Technology (ERATO), Katsura Int’tech Center, Katsura, Nishikyo-ku, Kyoto 615-8530, Japan
| | - Sada-atsu Mukai
- Department
of Polymer Chemistry, Graduate School of
Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
- Japan
Science and Technology Agency (JST), The Exploratory Research for
Advanced Technology (ERATO), Katsura Int’tech Center, Katsura, Nishikyo-ku, Kyoto 615-8530, Japan
| | - Shin-ichi Sawada
- Department
of Polymer Chemistry, Graduate School of
Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
- Japan
Science and Technology Agency (JST), The Exploratory Research for
Advanced Technology (ERATO), Katsura Int’tech Center, Katsura, Nishikyo-ku, Kyoto 615-8530, Japan
| | - Yoshihiro Sasaki
- Department
of Polymer Chemistry, Graduate School of
Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Kazunari Akiyoshi
- Department
of Polymer Chemistry, Graduate School of
Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
- Japan
Science and Technology Agency (JST), The Exploratory Research for
Advanced Technology (ERATO), Katsura Int’tech Center, Katsura, Nishikyo-ku, Kyoto 615-8530, Japan
| |
Collapse
|
35
|
Hodgson SM, Bakaic E, Stewart SA, Hoare T, Adronov A. Properties of Poly(ethylene glycol) Hydrogels Cross-Linked via Strain-Promoted Alkyne-Azide Cycloaddition (SPAAC). Biomacromolecules 2016; 17:1093-100. [PMID: 26842783 DOI: 10.1021/acs.biomac.5b01711] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A series of poly(ethylene glycol) (PEG) hydrogels was synthesized using strain-promoted alkyne-azide cycloaddition (SPAAC) between PEG chains terminated with either aza-dibenzocyclooctynes or azide functionalities. The gelation process was found to occur rapidly upon mixing the two components in aqueous solution without the need for external stimuli or catalysts, making the system a candidate for use as an injectable hydrogel. The mechanical and rheological properties of these hydrogels were found to be tunable by varying the polymer molecular weight and the number of cross-linking groups per chain. The gelation times of these hydrogels ranged from 10 to 60 s at room temperature. The mass-based swelling ratios varied from 45 to 76 at maximum swelling (relative to the dry state), while the weight percent of polymer in these hydrogels ranged from 1.31 to 2.05%, demonstrating the variations in amount of polymer required to maintain the structural integrity of the gel. Each hydrogel degraded at a different rate in PBS at pH = 7.4, with degradation times ranging from 1 to 35 days. By changing the composition of the two starting components, it was found that the Young's modulus of each hydrogel could be varied from 1 to 18 kPa. Hydrogel incubation with bovine serum albumin showed minimal protein adsorption. Finally, a cell cytotoxicity study of the precursor polymers with 3T3 fibroblasts demonstrated that the azide- and strained alkyne-functionalized PEGs are noncytotoxic.
Collapse
Affiliation(s)
- Sabrina M Hodgson
- Department of Chemistry and Chemical Biology McMaster University 1280 Main St. W. Hamilton, ON L8S 4M1, Canada
| | - Emilia Bakaic
- Department of Chemical Engineering McMaster University 1280 Main St. W. Hamilton, ON L8S 4L7, Canada
| | - S Alison Stewart
- Department of Chemistry and Chemical Biology McMaster University 1280 Main St. W. Hamilton, ON L8S 4M1, Canada
| | - Todd Hoare
- Department of Chemical Engineering McMaster University 1280 Main St. W. Hamilton, ON L8S 4L7, Canada
| | - Alex Adronov
- Department of Chemistry and Chemical Biology McMaster University 1280 Main St. W. Hamilton, ON L8S 4M1, Canada
| |
Collapse
|
36
|
Ghosh S, Cabral JD, Hanton LR, Moratti SC. Strong poly(ethylene oxide) based gel adhesives via oxime cross-linking. Acta Biomater 2016; 29:206-214. [PMID: 26476342 DOI: 10.1016/j.actbio.2015.10.018] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Revised: 09/28/2015] [Accepted: 10/13/2015] [Indexed: 01/08/2023]
Abstract
There is a demand for materials to replace or augment the use of sutures and staples in surgical procedures. Currently available commercial surgical adhesives provide either high bond strength with biological toxicity or polymer and protein-based products that are biologically acceptable (though with potential sensitizing potential) but have much reduced bond strength. It is desirable to provide novel biocompatible and biodegradable surgical adhesives/sealants capable of high strength with minimal immune or inflammatory response. In this work, we report the end group derivatization of 8-arm star PEOs with aldehyde and amine end groups. Gels were prepared employing the Schiff-base chemistry between the aldehydes and the amines. Gel setting times, swelling behavior and rheological characterization were carried out for these gels. The mechanical-viscoelastic properties were found to be directly proportional to the crosslinking density of the gels, the 10K PEO gel was stiffer in comparison to the 20K PEO gel. The adhesive properties of these gels were tested using porcine skin and showed excellent adhesion properties. Cytotoxicity studies were carried out for the individual gel components using two different methods: (a) Crystal Violet Staining assay (CVS assay) and (b) impedance and cell index measurement by the xCELLigence system at concentrations >5%. Gels prepared by mixing 20% w/w solutions were also tested for cytotoxicity. The results revealed that the individual gel components as well as the prepared gels and their leachables were non-cytotoxic at these concentrations. STATEMENT OF SIGNIFICANCE This work presents a new type of glue that is aimed at surgery applications using a water soluble star shaped polymer. It show excellent adhesion to skin and is tough and easy to use. We show that it is very biocompatible based on tests on live human cells, and could therefore in principle be used for internal surgery. Comparison with other reported and commercial glues shows that it is stronger than most, and does not swell in water to the same degree as many other water based bioadhesives.
Collapse
|
37
|
Zhuang Y, Shen H, Yang F, Wang X, Wu D. Synthesis and characterization of PLGA nanoparticle/4-arm-PEG hybrid hydrogels with controlled porous structures. RSC Adv 2016. [DOI: 10.1039/c6ra08404d] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Here, we constructed PLGA NP crosslinked 4-arm-PEG hybrid hydrogels with adjustable porous structures, surface properties and mechanical properties.
Collapse
Affiliation(s)
- Yaping Zhuang
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory of Polymer Physics & Chemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Hong Shen
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory of Polymer Physics & Chemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Fei Yang
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory of Polymer Physics & Chemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Xing Wang
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory of Polymer Physics & Chemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Decheng Wu
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory of Polymer Physics & Chemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| |
Collapse
|
38
|
Wang L, Li L, Wang X, Huang D, Yang F, Shen H, Li Z, Wu D. UV-triggered thiol–disulfide exchange reaction towards tailored biodegradable hydrogels. Polym Chem 2016. [DOI: 10.1039/c5py01925g] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Biodegradable hydrogels were constructed by a UV-triggered thiol–disulfide exchange reaction with temporal and spatial precision.
Collapse
Affiliation(s)
- Linlin Wang
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory of Polymer Physics & Chemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Lei Li
- Beijing National Laboratory for Molecular Sciences (BNLMS)
- Key Laboratory of Polymer Chemistry & Physics of Ministry of Education
- Department of Polymer Science & Engineering
- College of Chemistry and Molecular Engineering
- Peking University
| | - Xing Wang
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory of Polymer Physics & Chemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Da Huang
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory of Polymer Physics & Chemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Fei Yang
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory of Polymer Physics & Chemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Hong Shen
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory of Polymer Physics & Chemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Zichen Li
- Beijing National Laboratory for Molecular Sciences (BNLMS)
- Key Laboratory of Polymer Chemistry & Physics of Ministry of Education
- Department of Polymer Science & Engineering
- College of Chemistry and Molecular Engineering
- Peking University
| | - Decheng Wu
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory of Polymer Physics & Chemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| |
Collapse
|
39
|
Dasgupta Q, Madras G, Chatterjee K. Controlled release kinetics of p-aminosalicylic acid from biodegradable crosslinked polyesters for enhanced anti-mycobacterial activity. Acta Biomater 2016; 30:168-176. [PMID: 26596566 DOI: 10.1016/j.actbio.2015.11.032] [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: 07/27/2015] [Revised: 09/26/2015] [Accepted: 11/16/2015] [Indexed: 01/16/2023]
Abstract
Unlike conventional polymeric drug delivery systems, where drugs are entrapped in polymers, this study focuses on the incorporation of the drug into the polymer backbone to achieve higher loading and sustained release. Crosslinked, biodegradable, xylitol based polyesters have been synthesized in this study. The bioactive drug moiety, p-aminosalicylic acid (PAS), was incorporated in xylitol based polyesters to impart its anti-mycobacterial activity. To understand the influence of the monomer chemistry on the incorporation of PAS and its subsequent release from the polymer, different diacids have been used. Controlled release profiles of the drug from these polyesters were studied under normal physiological conditions. The degradation of the polyesters varied from 48% to 76% and the release of PAS ranged from 54% to 65% of its initial loading in 7days. A new model was developed to explain the release kinetics of PAS from the polymer that accounted for the polymer degradation and drug concentration. The thermal, mechanical, drug release and cytocompatibility properties of the polymers indicate their suitability in biomedical applications. The released products from these polymers were observed to be pharmacologically active against Mycobacteria. The high drug loading and sustained release also ensured enhanced efficacy. These polymers form biocompatible, biodegradable polyesters where the sustained release of PAS may be tailored for potential treatment of mycobacterial infections. STATEMENT OF SIGNIFICANCE In the present work, we report on novel polyesters with p-aminosalicylic acid (PAS) incorporated in the polymer backbone. The current work aims to achieve controlled release of PAS and ensures the delivered PAS is stable and pharmacologically active. The novelty of this work primarily involves the synthetic chemistry of polymerization and detailed analysis and efficacy of active PAS delivery. A new kinetic model has been developed to explain the PAS release profiles. These polymers are biodegradable, cytocompatible and anti-mycobacterial in nature.
Collapse
Affiliation(s)
- Queeny Dasgupta
- Centre for Biosystems Science and Engineering, Indian Institute of Science, Bangalore 560012, India
| | - Giridhar Madras
- Centre for Biosystems Science and Engineering, Indian Institute of Science, Bangalore 560012, India; Department of Chemical Engineering, Indian Institute of Science, Bangalore 560012, India
| | - Kaushik Chatterjee
- Centre for Biosystems Science and Engineering, Indian Institute of Science, Bangalore 560012, India; Department of Materials Engineering, Indian Institute of Science, Bangalore 560012, India.
| |
Collapse
|
40
|
Li T, Shen J, Zhang Z, Wang S, Wei D. A poly(2-(dimethylamino)ethyl methacrylate-co-methacrylic acid) complex induced route to fabricate a super-hydrophilic hydrogel and its controllable oil/water separation. RSC Adv 2016. [DOI: 10.1039/c6ra01820c] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Thermo and pH dual-controllable oil/water separation materials are successfully fabricated by free radical polymerization of 2-(dimethylamino)ethyl methacrylate (DMAEMA) and methacrylic acid (MAA).
Collapse
Affiliation(s)
- Tingting Li
- Faculty of Materials Science and Chemical Engineering
- State Key Laboratory Base of Novel Functional Materials and Preparation Science
- Ningbo University
- Ningbo 315211
- P. R. China
| | - Jie Shen
- Faculty of Materials Science and Chemical Engineering
- State Key Laboratory Base of Novel Functional Materials and Preparation Science
- Ningbo University
- Ningbo 315211
- P. R. China
| | - Zheng Zhang
- Faculty of Materials Science and Chemical Engineering
- State Key Laboratory Base of Novel Functional Materials and Preparation Science
- Ningbo University
- Ningbo 315211
- P. R. China
| | - Sui Wang
- Faculty of Materials Science and Chemical Engineering
- State Key Laboratory Base of Novel Functional Materials and Preparation Science
- Ningbo University
- Ningbo 315211
- P. R. China
| | - Danyi Wei
- Faculty of Materials Science and Chemical Engineering
- State Key Laboratory Base of Novel Functional Materials and Preparation Science
- Ningbo University
- Ningbo 315211
- P. R. China
| |
Collapse
|
41
|
Munoz-Pinto DJ, Samavedi S, Grigoryan B, Hahn MS. In depth examination of impact of secondary reactive species on the apparent decoupling of poly(ethylene glycol) diacrylate hydrogel average mesh size and modulus. POLYMER 2015; 77:227-238. [PMID: 29332957 DOI: 10.1016/j.polymer.2015.09.032] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Poly(ethylene glycol) diacrylate (PEGDA) hydrogels are widely used in biotechnology due to their in situ crosslinking capacity and tunable physical properties. However, as with all single component hydrogels, the modulus of PEGDA networks cannot be tailored independently of mesh size. This interdependence places significant limitations on their use for defined, 3D cell-microenvironment studies and for certain controlled release applications. The incorporation of secondary reactive species (SRS) into PEGDA hydrogels has previously been shown to allow the identification of up to 6 PEGDA hydrogel formulations for which distinct moduli can be obtained at consistent average mesh size (or vice versa). However, the modulus and mesh size ranges which can be probed by these formulations are quite restricted. This work presents an in-depth study of SRS incorporation into PEGDA hydrogels, with the goal of expanding the space for which "decoupled" examination of modulus and mesh size effects is achievable. Towards this end, over 100 PEGDA hydrogels containing either N-vinyl pyrrolidone or star PEG-tetraacrylate as SRS were characterized. To our knowledge, this is the first study to demonstrate that SRS incorporation allows for the identification of a number of modulus ranges that can be probed at consistent average mesh size (or vice versa).
Collapse
Affiliation(s)
- Dany J Munoz-Pinto
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, NY
| | - Satyavrata Samavedi
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, NY
| | | | - Mariah S Hahn
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, NY
| |
Collapse
|
42
|
|
43
|
Martinelli E, Del Moro I, Galli G, Barbaglia M, Bibbiani C, Mennillo E, Oliva M, Pretti C, Antonioli D, Laus M. Photopolymerized Network Polysiloxane Films with Dangling Hydrophilic/Hydrophobic Chains for the Biofouling Release of Invasive Marine Serpulid Ficopomatus enigmaticus. ACS APPLIED MATERIALS & INTERFACES 2015; 7:8293-8301. [PMID: 25835588 DOI: 10.1021/acsami.5b01522] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Novel photopolymerized network films based on a polysiloxane matrix containing varied amounts of polyoxyethylene (P3) or perfluorohexylethyl (F) dangling side chains were investigated. For films containing less than 10 wt % P3 and F, the wettability and elastic modulus were similar to those of the photopolymerized network matrix. However, angle-resolved X-ray photoelectron spectroscopy measurements proved that the surface of films with F dangling chains was highly enriched in fluorine depending on both the amount of P3 and F and their relative ratio in the films. The biological performance of the films was evaluated against a new widespread and invasive marine biofoulant, the serpulid Ficopomatus enigmaticus. The diatom Navicula salinicola was also assayed as a conventional model organism for comparison. Films richer in P3 better resisted the settlement and promoted the release of calcified tubeworms of F. enigmaticus.
Collapse
Affiliation(s)
- Elisa Martinelli
- †Dipartimento di Chimica e Chimica Industriale and UdR Pisa INSTM, Università di Pisa, 56124 Pisa, Italy
| | - Ilaria Del Moro
- †Dipartimento di Chimica e Chimica Industriale and UdR Pisa INSTM, Università di Pisa, 56124 Pisa, Italy
| | - Giancarlo Galli
- †Dipartimento di Chimica e Chimica Industriale and UdR Pisa INSTM, Università di Pisa, 56124 Pisa, Italy
| | - Martina Barbaglia
- ‡Dipartimento di Scienze Veterinarie, Università di Pisa, 56126 Pisa, Italy
| | - Carlo Bibbiani
- ‡Dipartimento di Scienze Veterinarie, Università di Pisa, 56126 Pisa, Italy
| | - Elvira Mennillo
- ‡Dipartimento di Scienze Veterinarie, Università di Pisa, 56126 Pisa, Italy
| | - Matteo Oliva
- ‡Dipartimento di Scienze Veterinarie, Università di Pisa, 56126 Pisa, Italy
| | - Carlo Pretti
- ‡Dipartimento di Scienze Veterinarie, Università di Pisa, 56126 Pisa, Italy
| | - Diego Antonioli
- §Dipartimento di Scienze ed Innovazione Tecnologica, Università del Piemonte Orientale, 15100 Alessandria, Italy
| | - Michele Laus
- §Dipartimento di Scienze ed Innovazione Tecnologica, Università del Piemonte Orientale, 15100 Alessandria, Italy
| |
Collapse
|
44
|
Jones DR, Marchant RE, von Recum H, Sen Gupta A, Kottke-Marchant K. Photoinitiator-free synthesis of endothelial cell-adhesive and enzymatically degradable hydrogels. Acta Biomater 2015; 13:52-60. [PMID: 25462848 PMCID: PMC4416228 DOI: 10.1016/j.actbio.2014.11.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Revised: 10/07/2014] [Accepted: 11/05/2014] [Indexed: 12/13/2022]
Abstract
We report on a photoinitiator-free synthetic method of incorporating bioactivity into poly(ethylene glycol) (PEG) hydrogels in order to control physical properties, enzymatic biodegradability and cell-specific adhesiveness of the polymer network, while eliminating the need for UV-mediated photopolymerization. To accomplish this, hydrogel networks were polymerized using Michael addition with four-arm PEG acrylate (10 kDa), using a collagenase-sensitive peptide (CSP) as a crosslinker, and introducing an endothelial cell-adhesive peptide either terminally (RGD) or attached to the crosslinking peptide sequence (CSP-RGD). The efficiency of the Michael addition reactions were determined by nuclear magnetic resonance and Ellman's assay. Successful decoupling of cell adhesivity and physical properties was demonstrated by quantifying and comparing the swelling ratios and Young's moduli of various hydrogel formulations. Degradation profiles were established by incubating functionalized hydrogels in collagenase solutions (0.0-1.0 μg ml(-1)), demonstrating that functionalized hydrogels degraded at a rate dependent upon collagenase concentration. Moreover, it was shown that the degradation rate was independent of CSP-RGD concentration. Cell attachment and proliferation on functionalized hydrogels were compared for various RGD concentrations, providing evidence that cell attachment and proliferation were directly related to relative amounts of the CSP-RGD combination peptide. An increase in cell viability was achieved using Michael addition techniques when compared to UV polymerization, and was assessed by a LIVE/DEAD fluorescence assay. This photoinitiator-free method shows promise in creating hydrogel-based tissue engineering scaffolds allow for decoupled cell adhesivity and physical properties and that render greater cell viability.
Collapse
Affiliation(s)
- Derek R Jones
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH 44106, USA
| | - Roger E Marchant
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH 44106, USA
| | - Horst von Recum
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH 44106, USA
| | - Anirban Sen Gupta
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH 44106, USA
| | - Kandice Kottke-Marchant
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH 44106, USA; Robert J. Tomsich Pathology and Laboratory Medicine Institute, Cleveland Clinic, Cleveland, OH 44195, USA.
| |
Collapse
|
45
|
Bakaic E, Smeets NMB, Dorrington H, Hoare T. “Off-the-shelf” thermoresponsive hydrogel design: tuning hydrogel properties by mixing precursor polymers with different lower-critical solution temperatures. RSC Adv 2015. [DOI: 10.1039/c5ra00920k] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Mixing POEGMA precursor polymers with different LCSTs leads to linear changes in macroscopic gel properties (e.g. mechanics, swelling) but non-linear changes in properties dependent on gel microstructure (e.g. protein adsorption, cell adhesion).
Collapse
Affiliation(s)
- Emilia Bakaic
- McMaster University
- Department of Chemical Engineering
- Hamilton
- Canada
| | | | - Helen Dorrington
- McMaster University
- Department of Chemical Engineering
- Hamilton
- Canada
| | - Todd Hoare
- McMaster University
- Department of Chemical Engineering
- Hamilton
- Canada
| |
Collapse
|
46
|
Hashimoto Y, Mukai SA, Sawada SI, Sasaki Y, Akiyoshi K. Nanogel tectonic porous gel loading biologics, nanocarriers, and cells for advanced scaffold. Biomaterials 2015; 37:107-15. [DOI: 10.1016/j.biomaterials.2014.10.045] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2014] [Accepted: 10/02/2014] [Indexed: 11/27/2022]
|
47
|
Bakaic E, Smeets NMB, Hoare T. Injectable hydrogels based on poly(ethylene glycol) and derivatives as functional biomaterials. RSC Adv 2015. [DOI: 10.1039/c4ra13581d] [Citation(s) in RCA: 117] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
The design criteria for injectable, in situ-gelling hydrogels are reviewed in conjunction with highlights on recent progress in the preparation of injectable PEG and PEG-analogue poly(oligoethylene glycol methacrylate) (POEGMA) hydrogels.
Collapse
Affiliation(s)
- Emilia Bakaic
- Department of Chemical Engineering
- McMaster University
- Hamilton
- Canada
| | | | - Todd Hoare
- Department of Chemical Engineering
- McMaster University
- Hamilton
- Canada
| |
Collapse
|
48
|
Smeets NMB, Bakaic E, Patenaude M, Hoare T. Injectable poly(oligoethylene glycol methacrylate)-based hydrogels with tunable phase transition behaviours: physicochemical and biological responses. Acta Biomater 2014; 10:4143-55. [PMID: 24911529 DOI: 10.1016/j.actbio.2014.05.035] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2014] [Revised: 05/24/2014] [Accepted: 05/30/2014] [Indexed: 12/31/2022]
Abstract
The potential of poly(oligoethylene glycol methacrylate) (POEGMA) hydrogels with varying thermosensitivities as soft materials for biomedical applications is demonstrated. Hydrogels are prepared from hydrazide and aldehyde functionalized POEGMA precursors, yielding POEGMA hydrogels with a volume phase transition temperature (VPTT) below (PO0), close to (PO10) and well above (PO100) physiological temperature. Hydrogels with VPTTs close to and above physiological temperature exhibit biological properties similar to those typically observed for poly(ethylene glycol) hydrogels (i.e. low protein adsorption, low cell adhesion and minimal inflammatory responses in vivo) while hydrogels with VPTTs lower than physiological temperature exhibit biological properties more analogous to poly(N-isopropylacrylamide) above its phase transition temperature (temperature-switchable cell adhesion, higher protein adsorption and somewhat more acute inflammation in vivo). As such, the use of POEGMA precursors with varying chain lengths of ethylene oxide grafts offers a versatile platform for the design of hydrogels with tunable physiological properties via simple copolymerization.
Collapse
Affiliation(s)
- Niels M B Smeets
- Department of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4L8, Canada
| | - Emilia Bakaic
- Department of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4L8, Canada
| | - Mathew Patenaude
- Department of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4L8, Canada
| | - Todd Hoare
- Department of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4L8, Canada.
| |
Collapse
|
49
|
Hao Y, Zheng M, Chen Y. A highly stable and water-soluble fluorescent dye for fluorescence imaging of living cells. J Mater Chem B 2014; 2:7369-7374. [DOI: 10.1039/c4tb01210k] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
|
50
|
Cengiz N, Rao J, Sanyal A, Khan A. Designing functionalizable hydrogels through thiol-epoxy coupling chemistry. Chem Commun (Camb) 2014; 49:11191-3. [PMID: 24150528 DOI: 10.1039/c3cc45859h] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A novel and modular strategy has been developed for the preparation of reactive and functionalized hydrogels. In this strategy, thiol-epoxy coupling chemistry was employed for the formation of a hydrophilic network. The hydroxyl groups, generated during the coupling process, were then engaged in anchoring a fluorescent probe to the hydrogel scaffold.
Collapse
Affiliation(s)
- Nergiz Cengiz
- Department of Chemistry, Bogazici University, Bebek 34342, Istanbul, Turkey.
| | | | | | | |
Collapse
|