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Campbell JM, Gosnell M, Agha A, Handley S, Knab A, Anwer AG, Bhargava A, Goldys EM. Label-Free Assessment of Key Biological Autofluorophores: Material Characteristics and Opportunities for Clinical Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024:e2403761. [PMID: 38775184 DOI: 10.1002/adma.202403761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 05/04/2024] [Indexed: 06/13/2024]
Abstract
Autofluorophores are endogenous fluorescent compounds that naturally occur in the intra and extracellular spaces of all tissues and organs. Most have vital biological functions - like the metabolic cofactors NAD(P)H and FAD+, as well as the structural protein collagen. Others are considered to be waste products - like lipofuscin and advanced glycation end products - which accumulate with age and are associated with cellular dysfunction. Due to their natural fluorescence, these materials have great utility for enabling non-invasive, label-free assays with direct ties to biological function. Numerous technologies, with different advantages and drawbacks, are applied to their assessment, including fluorescence lifetime imaging microscopy, hyperspectral microscopy, and flow cytometry. Here, the applications of label-free autofluorophore assessment are reviewed for clinical and health-research applications, with specific attention to biomaterials, disease detection, surgical guidance, treatment monitoring, and tissue assessment - fields that greatly benefit from non-invasive methodologies capable of continuous, in vivo characterization.
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Affiliation(s)
- Jared M Campbell
- Australian Research Council Centre of Excellence for Nanoscale BioPhotonics, Graduate School of Biomedical Engineering, University of New South Wales, Sydney, NSW, 2033, Australia
| | | | - Adnan Agha
- Australian Research Council Centre of Excellence for Nanoscale BioPhotonics, Graduate School of Biomedical Engineering, University of New South Wales, Sydney, NSW, 2033, Australia
| | - Shannon Handley
- Australian Research Council Centre of Excellence for Nanoscale BioPhotonics, Graduate School of Biomedical Engineering, University of New South Wales, Sydney, NSW, 2033, Australia
| | - Aline Knab
- Australian Research Council Centre of Excellence for Nanoscale BioPhotonics, Graduate School of Biomedical Engineering, University of New South Wales, Sydney, NSW, 2033, Australia
| | - Ayad G Anwer
- Australian Research Council Centre of Excellence for Nanoscale BioPhotonics, Graduate School of Biomedical Engineering, University of New South Wales, Sydney, NSW, 2033, Australia
| | - Akanksha Bhargava
- Australian Research Council Centre of Excellence for Nanoscale BioPhotonics, Graduate School of Biomedical Engineering, University of New South Wales, Sydney, NSW, 2033, Australia
| | - Ewa M Goldys
- Australian Research Council Centre of Excellence for Nanoscale BioPhotonics, Graduate School of Biomedical Engineering, University of New South Wales, Sydney, NSW, 2033, Australia
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2
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Yanev P, van Tilborg GA, Boere KWM, Stowe AM, van der Toorn A, Viergever MA, Hennink WE, Vermonden T, Dijkhuizen RM. Thermosensitive Biodegradable Hydrogels for Local and Controlled Cerebral Delivery of Proteins: MRI-Based Monitoring of In Vitro and In Vivo Protein Release. ACS Biomater Sci Eng 2023; 9:760-772. [PMID: 36681938 PMCID: PMC9930091 DOI: 10.1021/acsbiomaterials.2c01224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Hydrogels have been suggested as novel drug delivery systems for sustained release of therapeutic proteins in various neurological disorders. The main advantage these systems offer is the controlled, prolonged exposure to a therapeutically effective dose of the released drug after a single intracerebral injection. Characterization of controlled release of therapeutics from a hydrogel is generally performed in vitro, as current methods do not allow for in vivo measurements of spatiotemporal distribution and release kinetics of a loaded protein. Importantly, the in vivo environment introduces many additional variables and factors that cannot be effectively simulated under in vitro conditions. To address this, in the present contribution, we developed a noninvasive in vivo magnetic resonance imaging (MRI) method to monitor local protein release from two injected hydrogels of the same chemical composition but different initial water contents. We designed a biodegradable hydrogel formulation composed of low and high concentration thermosensitive polymer and thiolated hyaluronic acid, which is liquid at room temperature and forms a gel due to a combination of physical and chemical cross-linking upon injection at 37 °C. The in vivo protein release kinetics from these gels were assessed by MRI analysis utilizing a model protein labeled with an MR contrast agent, i.e. gadolinium-labeled albumin (74 kDa). As proof of principle, the release kinetics of the hydrogels were first measured with MRI in vitro. Subsequently, the protein loaded hydrogels were administered in male Wistar rat brains and the release in vivo was monitored for 21 days. In vitro, the thermosensitive hydrogels with an initial water content of 81 and 66% released 64 ± 3% and 43 ± 3% of the protein loading, respectively, during the first 6 days at 37 °C. These differences were even more profound in vivo, where the thermosensitive hydrogels released 83 ± 16% and 57 ± 15% of the protein load, respectively, 1 week postinjection. Measurement of volume changes of the gels over time showed that the thermosensitive gel with the higher polymer concentration increased more than 4-fold in size in vivo after 3 weeks, which was substantially different from the in vitro behavior where a volume change of 35% was observed. Our study demonstrates the potential of MRI to noninvasively monitor in vivo intracerebral protein release from a locally administered in situ forming hydrogel, which could aid in the development and optimization of such drug delivery systems for brain disorders.
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Affiliation(s)
- Pavel Yanev
- Biomedical
MR Imaging and Spectroscopy Group, Center for Image Sciences, University Medical Center Utrecht and Utrecht University, Utrecht3584 CX, The Netherlands,Department
of Neurology, University of Kentucky, Lexington, Kentucky40506, United States
| | - Geralda A.F. van Tilborg
- Biomedical
MR Imaging and Spectroscopy Group, Center for Image Sciences, University Medical Center Utrecht and Utrecht University, Utrecht3584 CX, The Netherlands,E-mail:
| | - Kristel W. M. Boere
- Department
of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, University Utrecht, Utrecht3584 CG, The Netherlands
| | - Ann M. Stowe
- Department
of Neurology, University of Kentucky, Lexington, Kentucky40506, United States
| | - Annette van der Toorn
- Biomedical
MR Imaging and Spectroscopy Group, Center for Image Sciences, University Medical Center Utrecht and Utrecht University, Utrecht3584 CX, The Netherlands
| | - Max A. Viergever
- Biomedical
MR Imaging and Spectroscopy Group, Center for Image Sciences, University Medical Center Utrecht and Utrecht University, Utrecht3584 CX, The Netherlands
| | - Wim E. Hennink
- Department
of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, University Utrecht, Utrecht3584 CG, The Netherlands
| | - Tina Vermonden
- Department
of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, University Utrecht, Utrecht3584 CG, The Netherlands
| | - Rick M. Dijkhuizen
- Biomedical
MR Imaging and Spectroscopy Group, Center for Image Sciences, University Medical Center Utrecht and Utrecht University, Utrecht3584 CX, The Netherlands
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3
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Moud AA. Fluorescence Recovery after Photobleaching in Colloidal Science: Introduction and Application. ACS Biomater Sci Eng 2022; 8:1028-1048. [PMID: 35201752 DOI: 10.1021/acsbiomaterials.1c01422] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
FRAP (fluorescence recovery after photo bleaching) is a method for determining diffusion in material science. In industrial applications such as medications, foods, Medtech, hygiene, and textiles, the diffusion process has a substantial influence on the overall qualities of goods. All these complex and heterogeneous systems have diffusion-based processes at the local level. FRAP is a fluorescence-based approach for detecting diffusion; in this method, a high-intensity laser is made for a brief period and then applied to the samples, bleaching the fluorescent chemical inside the region, which is subsequently filled up by natural diffusion. This brief Review will focus on the existing research on employing FRAP to measure colloidal system heterogeneity and explore diffusion into complicated structures. This description of FRAP will be followed by a discussion of how FRAP is intended to be used in colloidal science. When constructing the current Review, the most recent publications were reviewed for this assessment. Because of the large number of FRAP articles in colloidal research, there is currently a dearth of knowledge regarding the growth of FRAP's significance to colloidal science. Colloids make up only 2% of FRAP papers, according to ISI Web of Knowledge.
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Affiliation(s)
- Aref Abbasi Moud
- Department of Chemical and Biological Engineering, The University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada
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4
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Prado RMB, Mishra S, Ahmad H, Burghardt WR, Kundu S. Capturing the Transient Microstructure of a Physically Assembled Gel Subjected to Temperature and Large Deformation. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00895] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Rosa Maria Badani Prado
- Dave C. Swalm School of Chemical Engineering, Mississippi State University, Mississippi State, Mississippi 39762, United States
| | - Satish Mishra
- Dave C. Swalm School of Chemical Engineering, Mississippi State University, Mississippi State, Mississippi 39762, United States
| | - Humayun Ahmad
- Dave C. Swalm School of Chemical Engineering, Mississippi State University, Mississippi State, Mississippi 39762, United States
| | - Wesley R. Burghardt
- Department of Chemical Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Santanu Kundu
- Dave C. Swalm School of Chemical Engineering, Mississippi State University, Mississippi State, Mississippi 39762, United States
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5
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Advanced Static and Dynamic Fluorescence Microscopy Techniques to Investigate Drug Delivery Systems. Pharmaceutics 2021; 13:pharmaceutics13060861. [PMID: 34208080 PMCID: PMC8230741 DOI: 10.3390/pharmaceutics13060861] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 06/07/2021] [Accepted: 06/08/2021] [Indexed: 01/01/2023] Open
Abstract
In the past decade(s), fluorescence microscopy and laser scanning confocal microscopy (LSCM) have been widely employed to investigate biological and biomimetic systems for pharmaceutical applications, to determine the localization of drugs in tissues or entire organisms or the extent of their cellular uptake (in vitro). However, the diffraction limit of light, which limits the resolution to hundreds of nanometers, has for long time restricted the extent and quality of information and insight achievable through these techniques. The advent of super-resolution microscopic techniques, recognized with the 2014 Nobel prize in Chemistry, revolutionized the field thanks to the possibility to achieve nanometric resolution, i.e., the typical scale length of chemical and biological phenomena. Since then, fluorescence microscopy-related techniques have acquired renewed interest for the scientific community, both from the perspective of instrument/techniques development and from the perspective of the advanced scientific applications. In this contribution we will review the application of these techniques to the field of drug delivery, discussing how the latest advancements of static and dynamic methodologies have tremendously expanded the experimental opportunities for the characterization of drug delivery systems and for the understanding of their behaviour in biologically relevant environments.
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6
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Abstract
Hydrogels comprise a class of soft materials which are extremely useful in a number of contexts, for example as matrix-mimetic biomaterials for applications in regenerative medicine and drug delivery. One particular subclass of hydrogels consists of materials prepared through non-covalent physical crosslinking afforded by supramolecular recognition motifs. The dynamic, reversible, and equilibrium-governed features of these molecular-scale motifs often transcend length-scales to endow the resulting hydrogels with these same properties on the bulk scale. In efforts to engineer hydrogels of all types with more precise or application-specific uses, inclusion of stimuli-responsive sol-gel transformations has been broadly explored. In the context of biomedical uses, temperature is an interesting stimulus which has been the focus of numerous hydrogel designs, supramolecular or otherwise. Most supramolecular motifs are inherently temperature-sensitive, with elevated temperatures commonly disfavoring motif formation and/or accelerating its dissociation. In addition, supramolecular motifs have also been incorporated for physical crosslinking in conjunction with polymeric or macromeric building blocks which themselves exhibit temperature-responsive changes to their properties. Through molecular-scale engineering of supramolecular recognition, and selection of a particular motif or polymeric/macromeric backbone, it is thus possible to devise a number of supramolecular hydrogel materials to empower a variety of future biomedical applications.
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Affiliation(s)
- Sijie Xian
- Department of Chemical & Biomolecular Engineering, University of Notre Dame, Notre Dame, IN 46556, USA.
| | - Matthew J Webber
- Department of Chemical & Biomolecular Engineering, University of Notre Dame, Notre Dame, IN 46556, USA.
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7
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Khandai S, Siegel RA, Jena SS. Probing the microenvironment of polyacrylamide hydrogel matrix using turbidity and fluorescence recovery after photobleaching: One versus Two phases. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.124618] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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8
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Gawade PM, Shadish JA, Badeau BA, DeForest CA. Logic-Based Delivery of Site-Specifically Modified Proteins from Environmentally Responsive Hydrogel Biomaterials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1902462. [PMID: 31265196 PMCID: PMC8296976 DOI: 10.1002/adma.201902462] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Revised: 05/26/2019] [Indexed: 05/17/2023]
Abstract
The controlled presentation of proteins from and within materials remains of significant interest for many bioengineering applications. Though "smart" platforms offer control over protein release in response to a single external cue, no strategy has been developed to trigger delivery in response to user-specified combinations of environmental inputs, nor to independently control the release of multiple species from a homogenous material. Here, a modular semisynthetic scheme is introduced to govern the release of site-specifically modified proteins from hydrogels following Boolean logic. A sortase-mediated transpeptidation reaction is used to generate recombinant proteins C-terminally tethered to gels through environmentally sensitive degradable linkers. By varying the connectivity of multiple stimuli-labile moieties within these customizable linkers, YES/OR/AND control of protein release is exhaustively demonstrated in response to one and two-input combinations involving enzyme, reductant, and light. Tethering of multiple proteins each through a different stimuli-sensitive linker permits their independent and sequential release from a common material. It is expected that these methodologies will enable new opportunities in tissue engineering and therapeutic delivery.
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Affiliation(s)
- Prathamesh Milind Gawade
- Department of Chemical Engineering, University of Washington, 3781 Okanogan Lane NE, Seattle, WA, 98195, USA
| | - Jared A Shadish
- Department of Chemical Engineering, University of Washington, 3781 Okanogan Lane NE, Seattle, WA, 98195, USA
| | - Barry A Badeau
- Department of Chemical Engineering, University of Washington, 3781 Okanogan Lane NE, Seattle, WA, 98195, USA
| | - Cole A DeForest
- Department of Chemical Engineering, University of Washington, 3781 Okanogan Lane NE, Seattle, WA, 98195, USA
- Department of Bioengineering, University of Washington, 3720 15th Ave NE, Seattle, WA, 98105, USA
- Institute for Stem Cell and Regenerative Medicine, University of Washington, 850 Republican Street, Seattle, WA, 98109, USA
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9
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10
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A thermo-responsive and photo-polymerizable chondroitin sulfate-based hydrogel for 3D printing applications. Carbohydr Polym 2016; 149:163-74. [DOI: 10.1016/j.carbpol.2016.04.080] [Citation(s) in RCA: 88] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2015] [Revised: 04/12/2016] [Accepted: 04/18/2016] [Indexed: 12/20/2022]
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11
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Sheikhi A, van de Ven TGM. Trapping It Softly: Ultrasoft Zirconium Metallogels for Macromolecule Entrapment and Reconfiguration. ACS Macro Lett 2016; 5:904-908. [PMID: 35607220 DOI: 10.1021/acsmacrolett.6b00447] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Trapping nanosized drugs in ultrasoft, shear-thinning hydrogels with large pores is of particular interest, yet a persistent challenge in nanomedicine due to the lack of hydrodynamic confinement. Engineering molecular interactions between a macromolecule and a supramolecular gel may address this shortcoming, providing a key route to develop advanced drug carriers without compromising matrix elasticity. Here, we show that ultrasoft zirconium-based metallogels are able to trap and reconfigure model nanodrugs (e.g., dextran) through complexation and hydrogen bonding. The diffusion coefficients of dextran molecules (Mw ∼ 10-2000 kDa, a ∼ 2-20 nm) in zirconium carbonate (ZC) metallogels (G' < 30 Pa) were measured by pulsed field gradient nuclear magnetic resonance (PFGNMR), which revealed the coexistence of hindered and enhanced collective diffusion regimes for the first time. This work may pave the way toward designing next generation ultrasoft drug carriers and functional templates to control biomacromolecular processes, such as protein folding.
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Affiliation(s)
- Amir Sheikhi
- Department of Chemistry,
Centre for Self-Assembled Chemical Structures, and Pulp and Paper
Research Centre, McGill University, Montreal, 3420 University
Street, QC H3A
2A7, Canada
| | - Theo G. M. van de Ven
- Department of Chemistry,
Centre for Self-Assembled Chemical Structures, and Pulp and Paper
Research Centre, McGill University, Montreal, 3420 University
Street, QC H3A
2A7, Canada
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12
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Abbadessa A, Mouser VHM, Blokzijl MM, Gawlitta D, Dhert WJA, Hennink WE, Malda J, Vermonden T. A Synthetic Thermosensitive Hydrogel for Cartilage Bioprinting and Its Biofunctionalization with Polysaccharides. Biomacromolecules 2016; 17:2137-2147. [PMID: 27171342 PMCID: PMC4931898 DOI: 10.1021/acs.biomac.6b00366] [Citation(s) in RCA: 83] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Hydrogels based on triblock copolymers of polyethylene glycol and partially methacrylated poly[N-(2-hydroxypropyl) methacrylamide mono/dilactate] make up an attractive class of biomaterials because of their biodegradability, cytocompatibility, and tunable thermoresponsive and mechanical properties. If these properties are fine-tuned, the hydrogels can be three-dimensionally bioprinted, to generate, for instance, constructs for cartilage repair. This study investigated whether hydrogels based on the polymer mentioned above with a 10% degree of methacrylation (M10P10) support cartilage formation by chondrocytes and whether the incorporation of methacrylated chondroitin sulfate (CSMA) or methacrylated hyaluronic acid (HAMA) can improve the mechanical properties, long-term stability, and printability. Chondrocyte-laden M10P10 hydrogels were cultured for 42 days to evaluate chondrogenesis. M10P10 hydrogels with or without polysaccharides were evaluated for their mechanical properties (before and after UV photo-cross-linking), degradation kinetics, and printability. Extensive cartilage matrix production occurred in M10P10 hydrogels, highlighting their potential for cartilage repair strategies. The incorporation of polysaccharides increased the storage modulus of polymer mixtures and decreased the degradation kinetics in cross-linked hydrogels. Addition of HAMA to M10P10 hydrogels improved printability and resulted in three-dimensional constructs with excellent cell viability. Hence, this novel combination of M10P10 with HAMA forms an interesting class of hydrogels for cartilage bioprinting.
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Affiliation(s)
- Anna Abbadessa
- Department of Pharmaceutics, Utrecht Institute for
Pharmaceutical Sciences (UIPS), Faculty of Science, Utrecht University, P.O. Box
80082, 3508 TB Utrecht, The Netherlands
| | - Vivian H. M. Mouser
- Department of Orthopaedics, University Medical Center
Utrecht, P.O. Box 85500, 3508 GA Utrecht, The Netherlands
| | - Maarten M. Blokzijl
- Department of Pharmaceutics, Utrecht Institute for
Pharmaceutical Sciences (UIPS), Faculty of Science, Utrecht University, P.O. Box
80082, 3508 TB Utrecht, The Netherlands
- Department of Orthopaedics, University Medical Center
Utrecht, P.O. Box 85500, 3508 GA Utrecht, The Netherlands
| | - Debby Gawlitta
- Department of Oral and Maxillofacial Surgery & Special
Dental Care, University Medical Center Utrecht, P.O. Box 85500, 3508 GA Utrecht, The
Netherlands
| | - Wouter J. A. Dhert
- Department of Orthopaedics, University Medical Center
Utrecht, P.O. Box 85500, 3508 GA Utrecht, The Netherlands
- Department of Equine Sciences, Faculty of Veterinary
Medicine, Utrecht University, P.O. Box 80163, 3508 TD Utrecht, The Netherlands
| | - Wim E. Hennink
- Department of Pharmaceutics, Utrecht Institute for
Pharmaceutical Sciences (UIPS), Faculty of Science, Utrecht University, P.O. Box
80082, 3508 TB Utrecht, The Netherlands
| | - Jos Malda
- Department of Orthopaedics, University Medical Center
Utrecht, P.O. Box 85500, 3508 GA Utrecht, The Netherlands
- Department of Equine Sciences, Faculty of Veterinary
Medicine, Utrecht University, P.O. Box 80163, 3508 TD Utrecht, The Netherlands
| | - Tina Vermonden
- Department of Pharmaceutics, Utrecht Institute for
Pharmaceutical Sciences (UIPS), Faculty of Science, Utrecht University, P.O. Box
80082, 3508 TB Utrecht, The Netherlands
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13
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Voorhaar L, Hoogenboom R. Supramolecular polymer networks: hydrogels and bulk materials. Chem Soc Rev 2016; 45:4013-31. [PMID: 27206244 DOI: 10.1039/c6cs00130k] [Citation(s) in RCA: 253] [Impact Index Per Article: 31.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Supramolecular polymer networks are materials crosslinked by reversible supramolecular interactions, such as hydrogen bonding or electrostatic interactions. Supramolecular materials show very interesting and useful properties resulting from their dynamic nature, such as self-healing, stimuli-responsiveness and adaptability. Here we will discuss recent progress in polymer-based supramolecular networks for the formation of hydrogels and bulk materials.
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Affiliation(s)
- Lenny Voorhaar
- Supramolecular Chemistry Group, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, 9000 Ghent, Belgium.
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14
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Constantinou AP, Georgiou TK. Thermoresponsive gels based on ABC triblock copolymers: effect of the length of the PEG side group. Polym Chem 2016. [DOI: 10.1039/c5py02072g] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
ABC triblock copolymers of varying compositions and lengths of the PEG side groups were fabricated and their thermoresponsive behaviour was thoroughly investigated.
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Affiliation(s)
- A. P. Constantinou
- Department of Materials
- Imperial College London
- Royal School of Mines
- London
- UK
| | - T. K. Georgiou
- Department of Materials
- Imperial College London
- Royal School of Mines
- London
- UK
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15
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Klymenko A, Nicol E, Nicolai T, Colombani O. Effect of Self-Assembly on Probe Diffusion in Solutions and Networks of pH-Sensitive Triblock Copolymers. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b01324] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- A. Klymenko
- LUNAM Université,
Université du Maine, IMMM−UMR CNRS 6283, Université du Maine, av. O. Messiaen, 72085 Le Mans, cedex 9, France
| | - E. Nicol
- LUNAM Université,
Université du Maine, IMMM−UMR CNRS 6283, Université du Maine, av. O. Messiaen, 72085 Le Mans, cedex 9, France
| | - T. Nicolai
- LUNAM Université,
Université du Maine, IMMM−UMR CNRS 6283, Université du Maine, av. O. Messiaen, 72085 Le Mans, cedex 9, France
| | - O. Colombani
- LUNAM Université,
Université du Maine, IMMM−UMR CNRS 6283, Université du Maine, av. O. Messiaen, 72085 Le Mans, cedex 9, France
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16
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Hadjiev NA, Amsden BG. An assessment of the ability of the obstruction-scaling model to estimate solute diffusion coefficients in hydrogels. J Control Release 2014; 199:10-6. [PMID: 25499554 DOI: 10.1016/j.jconrel.2014.12.010] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2014] [Revised: 12/04/2014] [Accepted: 12/06/2014] [Indexed: 11/16/2022]
Abstract
The ability to estimate the diffusion coefficient of a solute within hydrogels has important application in the design and analysis of hydrogels used in drug delivery, tissue engineering, and regenerative medicine. A number of mathematical models have been derived for this purpose; however, they often rely on fitted parameters and so have limited predictive capability. Herein we assess the ability of the obstruction-scaling model to provide reasonable estimates of solute diffusion coefficients within hydrogels, as well as the assumption that a hydrogel can be represented as an entangled polymer solution of an equivalent concentration. Fluorescein isothiocyanate dextran solutes were loaded into sodium alginate solutions as well as hydrogels of different polymer volume fractions formed from photoinitiated cross-linking of methacrylate sodium alginate. The tracer diffusion coefficients of these solutes were measured using fluorescence recovery after photobleaching (FRAP). The measured diffusion coefficients were then compared to the values predicted by the obstruction-scaling model. The model predictions were within ±15% of the measured values, suggesting that the model can provide useful estimates of solute diffusion coefficients within hydrogels and solutions. Moreover, solutes diffusing in both sodium alginate solutions and hydrogels were demonstrated to experience the same degree of solute mobility restriction given the same effective polymer concentration, supporting the assumption that a hydrogel can be represented as an entangled polymer solution of equivalent concentration.
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Affiliation(s)
- Nicholas A Hadjiev
- Department of Chemical Engineering, Queen's University, Kingston, ON K7L 3N6, Canada
| | - Brian G Amsden
- Department of Chemical Engineering, Queen's University, Kingston, ON K7L 3N6, Canada.
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17
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Peak CW, Nagar S, Watts RD, Schmidt G. Robust and Degradable Hydrogels from Poly(ethylene glycol) and Semi-Interpenetrating Collagen. Macromolecules 2014. [DOI: 10.1021/ma500972y] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Charles W. Peak
- Weldon School of Biomedical
Engineering, Purdue University, 206 South Martin Jischke Drive, West Lafayette, Indiana 47907, United States
| | - Saumya Nagar
- Weldon School of Biomedical
Engineering, Purdue University, 206 South Martin Jischke Drive, West Lafayette, Indiana 47907, United States
| | - Ryan D. Watts
- Weldon School of Biomedical
Engineering, Purdue University, 206 South Martin Jischke Drive, West Lafayette, Indiana 47907, United States
| | - Gudrun Schmidt
- Weldon School of Biomedical
Engineering, Purdue University, 206 South Martin Jischke Drive, West Lafayette, Indiana 47907, United States
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18
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Hydrogels in a historical perspective: From simple networks to smart materials. J Control Release 2014; 190:254-73. [DOI: 10.1016/j.jconrel.2014.03.052] [Citation(s) in RCA: 555] [Impact Index Per Article: 55.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2014] [Revised: 03/19/2014] [Accepted: 03/29/2014] [Indexed: 12/23/2022]
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19
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van Elk M, Deckers R, Oerlemans C, Shi Y, Storm G, Vermonden T, Hennink WE. Triggered Release of Doxorubicin from Temperature-Sensitive Poly(N-(2-hydroxypropyl)-methacrylamide mono/dilactate) Grafted Liposomes. Biomacromolecules 2014; 15:1002-9. [DOI: 10.1021/bm401904u] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Merel van Elk
- Department
of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands
| | - Roel Deckers
- Image
Sciences Institute, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Chris Oerlemans
- Image
Sciences Institute, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Yang Shi
- Department
of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands
| | - Gert Storm
- Department
of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands
| | - Tina Vermonden
- Department
of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands
| | - Wim E. Hennink
- Department
of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands
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20
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Annabi N, Tamayol A, Uquillas JA, Akbari M, Bertassoni LE, Cha C, Camci-Unal G, Dokmeci MR, Peppas NA, Khademhosseini A. 25th anniversary article: Rational design and applications of hydrogels in regenerative medicine. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:85-123. [PMID: 24741694 PMCID: PMC3925010 DOI: 10.1002/adma.201303233] [Citation(s) in RCA: 845] [Impact Index Per Article: 84.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Hydrogels are hydrophilic polymer-based materials with high water content and physical characteristics that resemble the native extracellular matrix. Because of their remarkable properties, hydrogel systems are used for a wide range of biomedical applications, such as three-dimensional (3D) matrices for tissue engineering, drug-delivery vehicles, composite biomaterials, and as injectable fillers in minimally invasive surgeries. In addition, the rational design of hydrogels with controlled physical and biological properties can be used to modulate cellular functionality and tissue morphogenesis. Here, the development of advanced hydrogels with tunable physiochemical properties is highlighted, with particular emphasis on elastomeric, light-sensitive, composite, and shape-memory hydrogels. Emerging technologies developed over the past decade to control hydrogel architecture are also discussed and a number of potential applications and challenges in the utilization of hydrogels in regenerative medicine are reviewed. It is anticipated that the continued development of sophisticated hydrogels will result in clinical applications that will improve patient care and quality of life.
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Affiliation(s)
- Nasim Annabi
- Center for Biomedical Engineering, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02139, USA. Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA. Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA, 02115, USA
| | - Ali Tamayol
- Center for Biomedical Engineering, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02139, USA. Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Jorge Alfredo Uquillas
- Center for Biomedical Engineering, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02139, USA. Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Mohsen Akbari
- Center for Biomedical Engineering, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02139, USA. Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA. Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA, 02115, USA
| | - Luiz E. Bertassoni
- Center for Biomedical Engineering, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02139, USA. Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Chaenyung Cha
- Center for Biomedical Engineering, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02139, USA. Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Gulden Camci-Unal
- Center for Biomedical Engineering, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02139, USA. Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Mehmet R. Dokmeci
- Center for Biomedical Engineering, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02139, USA. Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Nicholas A. Peppas
- Department of Biomedical Engineering, Biomedical Engineering Building 3.110B, The University of Texas at Austin, 1 University Station, C0800, Austin, Texas, 78712–1062, USA
| | - Ali Khademhosseini
- Center for Biomedical Engineering, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02139, USA. Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA. Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA, 02115, USA
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21
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FRAP in Pharmaceutical Research: Practical Guidelines and Applications in Drug Delivery. Pharm Res 2013; 31:255-70. [DOI: 10.1007/s11095-013-1146-9] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Accepted: 07/09/2013] [Indexed: 01/02/2023]
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22
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Bal T, Kepsutlu B, Kizilel S. Characterization of protein release from poly(ethylene glycol) hydrogels with crosslink density gradients. J Biomed Mater Res A 2013; 102:487-95. [DOI: 10.1002/jbm.a.34701] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2012] [Revised: 02/27/2013] [Accepted: 03/01/2013] [Indexed: 01/26/2023]
Affiliation(s)
- Tuğba Bal
- Department of Chemical and Biological Engineering; College of Engineering, Koc University; 34450 Sariyer Istanbul Turkey
| | - Burcu Kepsutlu
- Department of Chemical and Biological Engineering; College of Engineering, Koc University; 34450 Sariyer Istanbul Turkey
| | - Seda Kizilel
- Department of Chemical and Biological Engineering; College of Engineering, Koc University; 34450 Sariyer Istanbul Turkey
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23
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Thermoresponsive gels based on ABA triblock copolymers: Does the asymmetry matter? ACTA ACUST UNITED AC 2013. [DOI: 10.1002/pola.26674] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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24
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Agarwal P, Rupenthal ID. Injectable implants for the sustained release of protein and peptide drugs. Drug Discov Today 2013; 18:337-49. [PMID: 23410799 DOI: 10.1016/j.drudis.2013.01.013] [Citation(s) in RCA: 111] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2012] [Revised: 11/02/2012] [Accepted: 01/14/2013] [Indexed: 12/20/2022]
Abstract
Protein and peptide macromolecules have emerged as promising therapeutic agents in recent years. However, their delivery to the target site can be challenging owing to their susceptibility to denaturation and degradation, short half-life and, therefore, poor bioavailability. In situ-forming implants present an attractive parenteral delivery platform for proteins and peptides because of their ease of application, sustained-release properties, tissue biocompatibility and simple manufacture. In this review, we discuss the various mechanisms by which polymer systems assemble in situ to form implant devices for sustained release of therapeutic macromolecules, and highlight recent advances in polymer systems that gel in response to a combination of these mechanisms. Finally, we examine release mechanisms, marketed products and limitations of injectable implants.
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Affiliation(s)
- Priyanka Agarwal
- Drug Delivery Research Unit, School of Pharmacy, Faculty of Medical and Health Sciences, The University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
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25
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Truong VX, Barker IA, Tan M, Mespouille L, Dubois P, Dove AP. Preparation of in situ-forming poly(5-methyl-5-allyloxycarbonyl-1,3-dioxan-2-one)-poly(ethylene glycol) hydrogels with tuneable swelling, mechanical strength and degradability. J Mater Chem B 2013; 1:221-229. [DOI: 10.1039/c2tb00148a] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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26
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Ward MA, Georgiou TK. Multicompartment thermoresponsive gels: does the length of the hydrophobic side group matter? Polym Chem 2013. [DOI: 10.1039/c2py21032k] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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27
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Chan BK, Wippich CC, Wu CJ, Sivasankar PM, Schmidt G. Robust and semi-interpenetrating hydrogels from poly(ethylene glycol) and collagen for elastomeric tissue scaffolds. Macromol Biosci 2012; 12:1490-501. [PMID: 23070957 DOI: 10.1002/mabi.201200234] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2012] [Revised: 08/17/2012] [Indexed: 12/11/2022]
Abstract
Here we present an injectable PEG/collagen hydrogel system with robust networks for use as elastomeric tissue scaffolds. Covalently crosslinked PEG and physically crosslinked collagen form semi-interpenetrating networks. The mechanical strength of the hydrogels depends predominantely on the PEG concentration but the incorporation of collagen into the PEG network enhances hydrogel viscoelasticity, elongation, and also cell adhesion properties. Experimental data show that this hydrogel system exhibits tunable mechanical properties that can be further developed. The hydrogels allow cell adhesion and proliferation in vitro. The results support the prospect of a robust and semi-interpenetrating biomaterial for elastomeric tissue scaffolds applications.
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Affiliation(s)
- Burke K Chan
- Weldon School of Biomedical Engineering, Purdue University, 206 S. Martin Jischke Drive, West Lafayette, IN 47907, USA
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28
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Lehmann S, Seiffert S, Richtering W. Spatially Resolved Tracer Diffusion in Complex Responsive Hydrogels. J Am Chem Soc 2012; 134:15963-9. [DOI: 10.1021/ja306808j] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Swen Lehmann
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, D-52074 Aachen,
Germany
| | - Sebastian Seiffert
- F-I2 Soft Matter
and Functional
Materials, Helmholtz-Zentrum Berlin, Hahn-Meitner-Platz 1, D-14109
Berlin, Germany
- Institute
of Chemistry and Biochemistry, FU Berlin, Takustr. 3, D-14195 Berlin, Germany
| | - Walter Richtering
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, D-52074 Aachen,
Germany
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29
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Han D, Boissiere O, Kumar S, Tong X, Tremblay L, Zhao Y. Two-Way CO2-Switchable Triblock Copolymer Hydrogels. Macromolecules 2012. [DOI: 10.1021/ma3015189] [Citation(s) in RCA: 128] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Dehui Han
- Département
de chimie and ‡Département de médecine nucléaire et de radiobiologie
and Centre d’imagerie moléculaire de Sherbrooke, Université de Sherbrooke, Sherbrooke,
QC, Canada J1K 2R1
| | - Olivier Boissiere
- Département
de chimie and ‡Département de médecine nucléaire et de radiobiologie
and Centre d’imagerie moléculaire de Sherbrooke, Université de Sherbrooke, Sherbrooke,
QC, Canada J1K 2R1
| | - Surjith Kumar
- Département
de chimie and ‡Département de médecine nucléaire et de radiobiologie
and Centre d’imagerie moléculaire de Sherbrooke, Université de Sherbrooke, Sherbrooke,
QC, Canada J1K 2R1
| | - Xia Tong
- Département
de chimie and ‡Département de médecine nucléaire et de radiobiologie
and Centre d’imagerie moléculaire de Sherbrooke, Université de Sherbrooke, Sherbrooke,
QC, Canada J1K 2R1
| | - Luc Tremblay
- Département
de chimie and ‡Département de médecine nucléaire et de radiobiologie
and Centre d’imagerie moléculaire de Sherbrooke, Université de Sherbrooke, Sherbrooke,
QC, Canada J1K 2R1
| | - Yue Zhao
- Département
de chimie and ‡Département de médecine nucléaire et de radiobiologie
and Centre d’imagerie moléculaire de Sherbrooke, Université de Sherbrooke, Sherbrooke,
QC, Canada J1K 2R1
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30
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Censi R, Di Martino P, Vermonden T, Hennink WE. Hydrogels for protein delivery in tissue engineering. J Control Release 2012; 161:680-92. [PMID: 22421425 DOI: 10.1016/j.jconrel.2012.03.002] [Citation(s) in RCA: 235] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2012] [Revised: 02/29/2012] [Accepted: 03/02/2012] [Indexed: 12/17/2022]
Abstract
Tissue defects caused by diseases or trauma present enormous challenges in regenerative medicine. Recently, a better understanding of the biological processes underlying tissue repair led to the establishment of new approaches in tissue engineering which comprise the combination of biodegradable scaffolds and appropriate cells together with specific environmental cues, such as growth or adhesive factors. These factors (in fact proteins) have to be loaded and sustainably released from the scaffolds in time. This review provides an overview of the various hydrogel technologies that have been proposed to control the release of bioactive molecules of interest for tissue engineering applications. In particular, after a brief introduction on bioactive protein drugs that have remarkable relevance for tissue engineering, this review will discuss their release mechanisms from hydrogels, their encapsulation and immobilization methods and will overview the main classes of hydrogel forming biomaterials used in vitro and in vivo to release them. Finally, an outlook on future directions and a glimpse into the current clinical developments are provided.
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Affiliation(s)
- Roberta Censi
- School of Pharmacy, University of Camerino, via S. Agostino 1, 62032, Camerino (MC), Italy.
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31
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Affiliation(s)
- Tina Vermonden
- Department of Pharmaceutics, Utrecht University, P.O. Box 80082, 3508 TB Utrecht, The Netherlands.
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32
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A Study of the Intrinsic Autofluorescence of Poly (ethylene glycol)-co-( L -Lactic acid) Diacrylate. J Fluoresc 2012; 22:907-13. [DOI: 10.1007/s10895-011-1029-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2011] [Accepted: 12/19/2011] [Indexed: 10/14/2022]
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33
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Paës G, Chabbert B. Characterization of Arabinoxylan/Cellulose Nanocrystals Gels to Investigate Fluorescent Probes Mobility in Bioinspired Models of Plant Secondary Cell Wall. Biomacromolecules 2011; 13:206-14. [DOI: 10.1021/bm201475a] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Gabriel Paës
- INRA, UMR614 Fractionnement des AgroRessources et Environnement, Reims, France
- University of Reims Champagne-Ardenne, UMR614 Fractionnement des AgroRessources
et Environnement, Reims, France
| | - Brigitte Chabbert
- INRA, UMR614 Fractionnement des AgroRessources et Environnement, Reims, France
- University of Reims Champagne-Ardenne, UMR614 Fractionnement des AgroRessources
et Environnement, Reims, France
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34
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Cha C, Jeong JH, Shim J, Kong H. Tuning the dependency between stiffness and permeability of a cell encapsulating hydrogel with hydrophilic pendant chains. Acta Biomater 2011; 7:3719-28. [PMID: 21704737 DOI: 10.1016/j.actbio.2011.06.017] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2011] [Revised: 06/09/2011] [Accepted: 06/10/2011] [Indexed: 11/24/2022]
Abstract
The mechanical stiffness of a hydrogel plays a significant role in regulating the phenotype of cells that adhere to its surface. However, the effect of hydrogel stiffness on cells cultured within its matrix is not well understood, because of the intrinsic inverse dependency between the permeability and stiffness of hydrogels. This study therefore presents an advanced biomaterial design strategy to decrease the inverse dependency between permeability and stiffness of a cell encapsulating hydrogel. Hydrogels were made by cross-linking poly(ethylene glycol) diacrylate (PEGDA) and poly(ethylene glycol) monoacrylate (PEGMA), with PEGMA acting as a pendant polymer chain. Increasing the mass fraction of PEGMA while keeping the total polymer concentration constant led to a decrease in the elastic modulus (E) of the hydrogel, but caused a minimal increase in the swelling ratio (Q). The size and hydrophobicity of the end groups of pendant PEG chains further fine tuned the dependency between Q and E of the hydrogel. Pure PEGDA hydrogels with varying molecular weights, which show the same range of E but a much greater range of Q, were used as a control. Fibroblasts encapsulated in PEGDA-PEGMA hydrogels displayed more significant biphasic dependencies of cell viability and vascular endothelial growth factor (VEGF) expression on E than those encapsulated in pure PEGDA hydrogels, which were greatly influenced by Q. Overall, the hydrogel design strategy presented in this study will be highly useful to better regulate the phenotype and ultimately improve the therapeutic efficacy of a wide array of cells used in various biology studies and clinical settings.
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35
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Wang Z, Möhwald H, Gao C. Preparation and redox-controlled reversible response of ferrocene-modified poly(allylamine hydrochloride) microcapsules. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:1286-1291. [PMID: 21043487 DOI: 10.1021/la103758t] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Single-component microcapsules were fabricated by the in situ reaction of ferrocenecarboxaldehyde (Fc-CHO) with poly(allylamine hydrochloride) (PAH) doped inside CaCO(3) microparticles, followed by core removal. The PAH-Fc microcapsules had very thick shells with remnant PAH-Fc inside, leading to a robust capsule structure that is less collapsed in the dry state. This single-component microcapsule is stabilized by the hydrophobic aggregation of Fc moieties and the protection of hydrophilic PAH backbones. Because of the excellent redox properties of Fc, the PAH-Fc microcapsules showed redox sensitivity to oxidation and reduction, as confirmed by UV-vis absorption spectroscopy and confocal laser scanning microscopy, resulting in reversible swelling and shrinking (11.7 vs 5.5 μm) in their size. Consequently, the permeability was also reversibly tuned, leading to the controlled loading and release of desired substances such as dextran.
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Affiliation(s)
- Zhipeng Wang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, China
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36
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Li M, Xu LQ, Wang L, Wu YP, Li J, Neoh KG, Kang ET. Clickable poly(ester amine) dendrimer-grafted Fe3O4 nanoparticles prepared via successive Michael addition and alkyne–azide click chemistry. Polym Chem 2011. [DOI: 10.1039/c1py00084e] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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37
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Thermogelation properties of poly(N-isopropylacrylamide) – block – poly(ethylene glycol) – block – poly(N-isopropylacrylamide) triblock copolymer aqueous solutions. REACT FUNCT POLYM 2010. [DOI: 10.1016/j.reactfunctpolym.2010.07.015] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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38
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Zhao Y, Tanaka M, Kinoshita T, Higuchi M, Tan T. Self-assembling peptide nanofiber scaffolds for controlled release governed by gelator design and guest size. J Control Release 2010; 147:392-9. [PMID: 20709121 DOI: 10.1016/j.jconrel.2010.08.002] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2010] [Revised: 07/22/2010] [Accepted: 08/06/2010] [Indexed: 11/24/2022]
Abstract
The aim of this study was to develop controlled drug delivery by network scaffolds based on self-assembling peptide RADAFI and RADAFII. These two peptides self-assembled into interconnected nanofibrilar network structures with distinct physical morphologies. The hydrogels were also utilized for entrapment and release of some model guests, promising their future application as a drug delivery vehicle. Fickian diffusion controlled the release kinetics. Furthermore, the obtained release function was dependent on both rational design of the peptides used for hydrogel formation and choice of the entrapped molecules. On the basis of the striking different releases of these two peptide scaffolds, we suggested that guest size and lipophilicity influenced the release competitively. The release of RADAFI system was dominated by guest size, and the guest lipophilicity controlled the release behavior in RADAFII system. In a word, this work would potentially provide a spatially and temporally controlled delivery system for some functional drugs in the future.
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Affiliation(s)
- Ying Zhao
- Department of Materials Science and Engineering, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan
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39
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Censi R, Vermonden T, Deschout H, Braeckmans K, di Martino P, De Smedt SC, van Nostrum CF, Hennink WE. Photopolymerized Thermosensitive Poly(HPMAlactate)-PEG-Based Hydrogels: Effect of Network Design on Mechanical Properties, Degradation, and Release Behavior. Biomacromolecules 2010; 11:2143-51. [DOI: 10.1021/bm100514p] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Roberta Censi
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences (UIPS), Utrecht University, P.O. Box 80082, 3508 TB Utrecht, The Netherlands, Department of Chemical Sciences, Camerino University, via S, Agostino 1, 62032, Camerino (MC), Italy, and Laboratory of General Biochemistry and Physical Chemistry, Department of Pharmaceutics, Ghent University, Harelbekestraat 72, B-9000, Ghent, Belgium
| | - Tina Vermonden
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences (UIPS), Utrecht University, P.O. Box 80082, 3508 TB Utrecht, The Netherlands, Department of Chemical Sciences, Camerino University, via S, Agostino 1, 62032, Camerino (MC), Italy, and Laboratory of General Biochemistry and Physical Chemistry, Department of Pharmaceutics, Ghent University, Harelbekestraat 72, B-9000, Ghent, Belgium
| | - Hendrik Deschout
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences (UIPS), Utrecht University, P.O. Box 80082, 3508 TB Utrecht, The Netherlands, Department of Chemical Sciences, Camerino University, via S, Agostino 1, 62032, Camerino (MC), Italy, and Laboratory of General Biochemistry and Physical Chemistry, Department of Pharmaceutics, Ghent University, Harelbekestraat 72, B-9000, Ghent, Belgium
| | - Kevin Braeckmans
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences (UIPS), Utrecht University, P.O. Box 80082, 3508 TB Utrecht, The Netherlands, Department of Chemical Sciences, Camerino University, via S, Agostino 1, 62032, Camerino (MC), Italy, and Laboratory of General Biochemistry and Physical Chemistry, Department of Pharmaceutics, Ghent University, Harelbekestraat 72, B-9000, Ghent, Belgium
| | - Piera di Martino
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences (UIPS), Utrecht University, P.O. Box 80082, 3508 TB Utrecht, The Netherlands, Department of Chemical Sciences, Camerino University, via S, Agostino 1, 62032, Camerino (MC), Italy, and Laboratory of General Biochemistry and Physical Chemistry, Department of Pharmaceutics, Ghent University, Harelbekestraat 72, B-9000, Ghent, Belgium
| | - Stefaan C. De Smedt
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences (UIPS), Utrecht University, P.O. Box 80082, 3508 TB Utrecht, The Netherlands, Department of Chemical Sciences, Camerino University, via S, Agostino 1, 62032, Camerino (MC), Italy, and Laboratory of General Biochemistry and Physical Chemistry, Department of Pharmaceutics, Ghent University, Harelbekestraat 72, B-9000, Ghent, Belgium
| | - Cornelus F. van Nostrum
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences (UIPS), Utrecht University, P.O. Box 80082, 3508 TB Utrecht, The Netherlands, Department of Chemical Sciences, Camerino University, via S, Agostino 1, 62032, Camerino (MC), Italy, and Laboratory of General Biochemistry and Physical Chemistry, Department of Pharmaceutics, Ghent University, Harelbekestraat 72, B-9000, Ghent, Belgium
| | - Wim E. Hennink
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences (UIPS), Utrecht University, P.O. Box 80082, 3508 TB Utrecht, The Netherlands, Department of Chemical Sciences, Camerino University, via S, Agostino 1, 62032, Camerino (MC), Italy, and Laboratory of General Biochemistry and Physical Chemistry, Department of Pharmaceutics, Ghent University, Harelbekestraat 72, B-9000, Ghent, Belgium
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40
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Censi R, Fieten PJ, di Martino P, Hennink WE, Vermonden T. In Situ Forming Hydrogels by Tandem Thermal Gelling and Michael Addition Reaction between Thermosensitive Triblock Copolymers and Thiolated Hyaluronan. Macromolecules 2010. [DOI: 10.1021/ma100606a] [Citation(s) in RCA: 89] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Roberta Censi
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences (UIPS), Utrecht University, P.O. Box 80082, 3508 TB Utrecht, The Netherlands
- Department of Chemical Sciences, Camerino University, via S. Agostino 1, 62032, Camerino (MC), Italy
| | - Peter J. Fieten
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences (UIPS), Utrecht University, P.O. Box 80082, 3508 TB Utrecht, The Netherlands
| | - Piera di Martino
- Department of Chemical Sciences, Camerino University, via S. Agostino 1, 62032, Camerino (MC), Italy
| | - Wim E. Hennink
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences (UIPS), Utrecht University, P.O. Box 80082, 3508 TB Utrecht, The Netherlands
| | - Tina Vermonden
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences (UIPS), Utrecht University, P.O. Box 80082, 3508 TB Utrecht, The Netherlands
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