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Gao Y, Zhang TL, Zhang HJ, Gao J, Yang PF. A Promising Application of Injectable Hydrogels in Nerve Repair and Regeneration for Ischemic Stroke. Int J Nanomedicine 2024; 19:327-345. [PMID: 38229707 PMCID: PMC10790665 DOI: 10.2147/ijn.s442304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 12/13/2023] [Indexed: 01/18/2024] Open
Abstract
Ischemic stroke, a condition that often leads to severe nerve damage, induces complex pathological and physiological changes in nerve tissue. The mature central nervous system (CNS) lacks intrinsic regenerative capacity, resulting in a poor prognosis and long-term neurological impairments. There is no available therapy that can fully restore CNS functionality. However, the utilization of injectable hydrogels has emerged as a promising strategy for nerve repair and regeneration. Injectable hydrogels possess exceptional properties, such as biocompatibility, tunable mechanical properties, and the ability to provide a supportive environment for cell growth and tissue regeneration. Recently, various hydrogel-based tissue engineering approaches, including cell encapsulation, controlled release of therapeutic factors, and incorporation of bioactive molecules, have demonstrated great potential in the treatment of CNS injuries caused by ischemic stroke. This article aims to provide a comprehensive review of the application and development of injectable hydrogels for the treatment of ischemic stroke-induced CNS injuries, shedding light on their therapeutic prospects, challenges, recent advancements, and future directions. Additionally, it will discuss the underlying mechanisms involved in hydrogel-mediated nerve repair and regeneration, as well as the need for further preclinical and clinical studies to validate their efficacy and safety.
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Affiliation(s)
- Yuan Gao
- Oriental Pan-Vascular Devices Innovation College, University of Shanghai for Science and Technology, Shanghai, People's Republic of China
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, People’s Republic of China
| | - Ting-Lin Zhang
- Changhai Clinical Research Unit, Shanghai Changhai Hospital, Naval Medical University, Shanghai, People’s Republic of China
| | - Hong-Jian Zhang
- Oriental Pan-Vascular Devices Innovation College, University of Shanghai for Science and Technology, Shanghai, People's Republic of China
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, People’s Republic of China
| | - Jie Gao
- Changhai Clinical Research Unit, Shanghai Changhai Hospital, Naval Medical University, Shanghai, People’s Republic of China
| | - Peng-Fei Yang
- Oriental Pan-Vascular Devices Innovation College, University of Shanghai for Science and Technology, Shanghai, People's Republic of China
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, People’s Republic of China
- Neurovascular Center, Changhai Hospital, Naval Medical University, Shanghai, People’s Republic of China
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2
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Sarma S, Deka DJ, Rajak P, Laloo D, Das T, Chetia P, Saha D, Bharali A, Deka B. Potential injectable hydrogels as biomaterials for central nervous system injury: A narrative review. IBRAIN 2023; 9:402-420. [PMID: 38680508 PMCID: PMC11045191 DOI: 10.1002/ibra.12137] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 10/20/2023] [Accepted: 10/27/2023] [Indexed: 05/01/2024]
Abstract
Numerous modalities exist through which the central nervous system (CNS) may sustain injury or impairment, encompassing traumatic incidents, stroke occurrences, and neurodegenerative diseases such as Alzheimer's disease and Parkinson's disease. Presently available pharmacological and therapeutic interventions are incapable of restoring or regenerating damaged CNS tissue, leading to substantial unmet clinical needs among patients with CNS ailments or injuries. To address and facilitate the recovery of the impaired CNS, cell-based repair strategies encompass multiple mechanisms, such as neuronal replacement, therapeutic factor secretion, and the promotion of host brain plasticity. Despite the progression of cell-based CNS reparation as a therapeutic strategy throughout the years, substantial barriers have impeded its widespread implementation in clinical settings. The integration of cell technologies with advancements in regenerative medicine utilizing biomaterials and tissue engineering has recently facilitated the surmounting of several of these impediments. This comprehensive review presents an overview of distinct CNS conditions necessitating cell reparation, in addition to exploring potential biomaterial methodologies that enhance the efficacy of treating brain injuries.
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Affiliation(s)
- Santa Sarma
- Girijananda Chowdhury Institute of Pharmaceutical ScienceAssam Science and Technology UniversityGuwahatiAssamIndia
| | - Dhruva J. Deka
- Girijananda Chowdhury Institute of Pharmaceutical ScienceAssam Science and Technology UniversityGuwahatiAssamIndia
| | - Prakash Rajak
- Department of Pharmaceutical SciencesDibrugarh UniversityDibrugarhAssamIndia
| | - Damiki Laloo
- School of Pharmaceutical SciencesGirijananda Chowdhury UniversityGuwahatiAssamIndia
| | - Trishna Das
- School of Pharmaceutical SciencesGirijananda Chowdhury UniversityGuwahatiAssamIndia
| | - Purbajit Chetia
- Department of PharmacologyNETES Institute of Pharmaceutical Science, Nemcare Group of Institutes, MirzaGuwahatiAssamIndia
| | - Dipankar Saha
- School of Pharmaceutical SciencesGirijananda Chowdhury UniversityGuwahatiAssamIndia
| | - Alakesh Bharali
- Department of Pharmaceutical SciencesDibrugarh UniversityDibrugarhAssamIndia
- School of Pharmaceutical SciencesGirijananda Chowdhury UniversityGuwahatiAssamIndia
| | - Bhargab Deka
- School of Pharmaceutical SciencesGirijananda Chowdhury UniversityGuwahatiAssamIndia
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Xiang Y, Yan J, Bao X, Gleadall A, Roach P, Sun T. Evaluation of Polymeric Particles for Modular Tissue Cultures in Developmental Engineering. Int J Mol Sci 2023; 24:ijms24065234. [PMID: 36982306 PMCID: PMC10049291 DOI: 10.3390/ijms24065234] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 03/03/2023] [Accepted: 03/07/2023] [Indexed: 03/30/2023] Open
Abstract
Developmental engineering (DE) aims to culture mammalian cells on corresponding modular scaffolds (scale: micron to millimeter), then assemble these into functional tissues imitating natural developmental biology processes. This research intended to investigate the influences of polymeric particles on modular tissue cultures. When poly(methyl methacrylate) (PMMA), poly(lactic acid) (PLA) and polystyrene (PS) particles (diameter: 5-100 µm) were fabricated and submerged in culture medium in tissue culture plastics (TCPs) for modular tissue cultures, the majority of adjacent PMMA, some PLA but no PS particles aggregated. Human dermal fibroblasts (HDFs) could be directly seeded onto large (diameter: 30-100 µm) PMMA particles, but not small (diameter: 5-20 µm) PMMA, nor all the PLA and PS particles. During tissue cultures, HDFs migrated from the TCPs surfaces onto all the particles, while the clustered PMMA or PLA particles were colonized by HDFs into modular tissues with varying sizes. Further comparisons revealed that HDFs utilized the same cell bridging and stacking strategies to colonize single or clustered polymeric particles, and the finely controlled open pores, corners and gaps on 3D-printed PLA discs. These observed cell-scaffold interactions, which were then used to evaluate the adaptation of microcarrier-based cell expansion technologies for modular tissue manufacturing in DE.
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Affiliation(s)
- Yu Xiang
- Department of Materials, Loughborough University, Epinal Way, Loughborough LE11 3TU, UK
| | - Jiongyi Yan
- Wolfson School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, Epinal Way, Loughborough LE11 3TU, UK
| | - Xujin Bao
- Department of Materials, Loughborough University, Epinal Way, Loughborough LE11 3TU, UK
| | - Andrew Gleadall
- Wolfson School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, Epinal Way, Loughborough LE11 3TU, UK
| | - Paul Roach
- Department of Chemistry, Loughborough University, Epinal Way, Loughborough LE11 3TU, UK
| | - Tao Sun
- Department of Chemical Engineering, Loughborough University, Epinal Way, Loughborough LE11 3TU, UK
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Wang X, Ansari A, Pierre V, Young K, Kothapalli CR, von Recum HA, Senyo SE. Injectable Extracellular Matrix Microparticles Promote Heart Regeneration in Mice with Post-ischemic Heart Injury. Adv Healthc Mater 2022; 11:e2102265. [PMID: 35118812 PMCID: PMC9035118 DOI: 10.1002/adhm.202102265] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 12/28/2021] [Indexed: 12/20/2022]
Abstract
Ischemic heart injury causes permanent cardiomyocyte loss and fibrosis impairing cardiac function. Tissue derived biomaterials have shown promise as an injectable treatment for the post-ischemic heart. Specifically, decellularized extracellular matrix (dECM) is a protein rich suspension that forms a therapeutic hydrogel once injected and improves the heart post-injury response in rodents and pig models. Current dECM-derived biomaterials are delivered to the heart as a liquid dECM hydrogel precursor or colloidal suspension, which gels over several minutes. To increase the functionality of the dECM therapy, an injectable solid dECM microparticle formulation derived from heart tissue to control sizing and extend stability in aqueous conditions is developed. When delivered into the infarcted mouse heart, these dECM microparticles protect cardiac function promote vessel density and reduce left ventricular remodeling by sustained delivery of biomolecules. Longer retention, higher stiffness, and slower protein release of dECM microparticles are noted compared to liquid dECM hydrogel precursor. In addition, the dECM microparticle can be developed as a platform for macromolecule delivery. Together, the results suggest that dECM microparticles can be developed as a modular therapy for heart injury.
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Affiliation(s)
- Xinming Wang
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Ali Ansari
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Valinteshley Pierre
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Kathleen Young
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Chandrasekhar R. Kothapalli
- Department of Chemical and Biomedical Engineering, Cleveland State University, Cleveland, Ohio 44115, United States
| | - Horst A. von Recum
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Samuel E. Senyo
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
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Bioactive injectable hydrogels for on demand molecule/cell delivery and for tissue regeneration in the central nervous system. Acta Biomater 2022; 140:88-101. [PMID: 34852302 DOI: 10.1016/j.actbio.2021.11.038] [Citation(s) in RCA: 38] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 11/21/2021] [Accepted: 11/23/2021] [Indexed: 12/21/2022]
Abstract
Currently there are no potential curative therapies that can improve the central nervous system (CNS) regeneration after traumatic injuries or diseases. Indeed, the regeneration of CNS is greatly impaired by limited drug penetration across the blood brain barrier (BBB), poor drug targeting, deficient progenitor neural cells and limited proliferation of mature neural cells. To overcome these limitations, bioengineered injectable hydrogels in combination with drug and cell therapy have been proposed to mimic the complexity of the CNS microenvironment and architecture. Additionally, to enhance relevant CNS regeneration, proper biophysical and biochemical cues are needed. Recently, great efforts have been devoted to tailor stimuli-responsive hydrogels as novel carrier systems which are able to guide neural tissue regeneration. This review provides an extensive overview on the most promising injectable hydrogels for neural tissue engineering. A special emphasis is made to highlight the ability of these hydrogels to deliver bioactive compounds/cells upon the exposure to internal and external stimuli. Bioactive injectable hydrogels have a broad application in central nervous system's (CNS) regeneration. This review gives an overview of the latest pioneering approaches in CNS recovery using stimuli-responsive hydrogels for several neurodegenerative disorders. STATEMENT OF SIGNIFICANCE: This review summarizes the latest innovations on bioactive injectable hydrogels, focusing on tailoring internal/external stimuli-responsive hydrogels for the new injectable systems design, able to guide neural tissue response. The purpose is to highlight the advantages and the limitations of thermo-responsive, photo responsive, magnetic responsive, electric responsive, ultrasound responsive and enzymes-triggered injectable hydrogels in developing customizable neurotherapies. We believe that this comprehensive review will help in identifying the strengths and gaps in the existing literature and to further support the use of injectable hydrogels in stimulating CNS regeneration.
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Jo YK, Heo SJ, Peredo AP, Mauck RL, Dodge GR, Lee D. Stretch-responsive adhesive microcapsules for strain-regulated antibiotic release from fabric wound dressings. Biomater Sci 2021; 9:5136-5143. [PMID: 34223592 DOI: 10.1039/d1bm00628b] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Bacterial infection of a wound is a major complication that can significantly delay proper healing and even necessitate surgical debridement. Conventional non-woven fabric dressings, including gauzes, bandages and cotton wools, often fail in treating wound infections in a timely manner due to their passive release mechanism of antibiotics. Here, we propose adhesive mechanically-activated microcapsules (MAMCs) capable of strongly adhering to a fibrous matrix to achieve a self-regulated release of antibiotics upon uniaxial stretching of non-woven fabric dressings. To achieve this, a uniform population of polydopamine (PDA)-coated MAMCs (PDA-MAMCs) are prepared using a microfluidics technique and subsequent oxidative dopamine polymerization. The PDA-MAMC allows for robust mechano-activation within the fibrous network through high retention and effective transmission of mechanical force under stretching. By validating the potential of a PDA-MAMCs-laden gauze to release antibiotics in a tensile strain-dependent manner, we demonstrate that PDA-MAMCs can be successfully incorporated into a woven material and create a smart wound dressing for control of bacterial infections. This new mechano-activatable delivery approach will open up a new avenue for a stretch-triggered, on-demand release of therapeutic cargos in skin-mountable or wearable biomedical devices.
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Affiliation(s)
- Yun Kee Jo
- Department of Chemical and Biomolecular Engineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, PA 19104, USA.
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7
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A Paradigm Shift in Tissue Engineering: From a Top–Down to a Bottom–Up Strategy. Processes (Basel) 2021. [DOI: 10.3390/pr9060935] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Tissue engineering (TE) was initially designed to tackle clinical organ shortage problems. Although some engineered tissues have been successfully used for non-clinical applications, very few (e.g., reconstructed human skin) have been used for clinical purposes. As the current TE approach has not achieved much success regarding more broad and general clinical applications, organ shortage still remains a challenging issue. This very limited clinical application of TE can be attributed to the constraints in manufacturing fully functional tissues via the traditional top–down approach, where very limited cell types are seeded and cultured in scaffolds with equivalent sizes and morphologies as the target tissues. The newly proposed developmental engineering (DE) strategy towards the manufacture of fully functional tissues utilises a bottom–up approach to mimic developmental biology processes by implementing gradual tissue assembly alongside the growth of multiple cell types in modular scaffolds. This approach may overcome the constraints of the traditional top–down strategy as it can imitate in vivo-like tissue development processes. However, several essential issues must be considered, and more mechanistic insights of the fundamental, underpinning biological processes, such as cell–cell and cell–material interactions, are necessary. The aim of this review is to firstly introduce and compare the number of cell types, the size and morphology of the scaffolds, and the generic tissue reconstruction procedures utilised in the top–down and the bottom–up strategies; then, it will analyse their advantages, disadvantages, and challenges; and finally, it will briefly discuss the possible technologies that may overcome some of the inherent limitations of the bottom–up strategy.
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8
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Caldwell AS, Aguado BA, Anseth KS. Designing Microgels for Cell Culture and Controlled Assembly of Tissue Microenvironments. ADVANCED FUNCTIONAL MATERIALS 2020; 30:1907670. [PMID: 33841061 PMCID: PMC8026140 DOI: 10.1002/adfm.201907670] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Indexed: 05/04/2023]
Abstract
Micron-sized hydrogels, termed microgels, are emerging as multifunctional platforms that can recapitulate tissue heterogeneity in engineered cell microenvironments. The microgels can function as either individual cell culture units or can be assembled into larger scaffolds. In this manner, individual microgels can be customized for single or multi-cell co-culture applications, or heterogeneous populations can be used as building blocks to create microporous assembled scaffolds that more closely mimic tissue heterogeneities. The inherent versatility of these materials allows user-defined control of the microenvironments, from the order of singly encapsulated cells to entire three-dimensional cell scaffolds. These hydrogel scaffolds are promising for moving towards personalized medicine approaches and recapitulating the multifaceted microenvironments that exist in vivo.
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Affiliation(s)
- Alexander S. Caldwell
- Department of Chemical and Biological Engineering, University of Colorado – Boulder, USA, 80303
- BioFrontiers Institute, University of Colorado – Boulder, USA, 80303
| | - Brian A. Aguado
- Department of Chemical and Biological Engineering, University of Colorado – Boulder, USA, 80303
- BioFrontiers Institute, University of Colorado – Boulder, USA, 80303
| | - Kristi S. Anseth
- Department of Chemical and Biological Engineering, University of Colorado – Boulder, USA, 80303
- BioFrontiers Institute, University of Colorado – Boulder, USA, 80303
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Teixeira MI, Amaral MH, Costa PC, Lopes CM, Lamprou DA. Recent Developments in Microfluidic Technologies for Central Nervous System Targeted Studies. Pharmaceutics 2020; 12:E542. [PMID: 32545276 PMCID: PMC7356280 DOI: 10.3390/pharmaceutics12060542] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Accepted: 06/09/2020] [Indexed: 12/24/2022] Open
Abstract
Neurodegenerative diseases (NDs) bear a lot of weight in public health. By studying the properties of the blood-brain barrier (BBB) and its fundamental interactions with the central nervous system (CNS), it is possible to improve the understanding of the pathological mechanisms behind these disorders and create new and better strategies to improve bioavailability and therapeutic efficiency, such as nanocarriers. Microfluidics is an intersectional field with many applications. Microfluidic systems can be an invaluable tool to accurately simulate the BBB microenvironment, as well as develop, in a reproducible manner, drug delivery systems with well-defined physicochemical characteristics. This review provides an overview of the most recent advances on microfluidic devices for CNS-targeted studies. Firstly, the importance of the BBB will be addressed, and different experimental BBB models will be briefly discussed. Subsequently, microfluidic-integrated BBB models (BBB/brain-on-a-chip) are introduced and the state of the art reviewed, with special emphasis on their use to study NDs. Additionally, the microfluidic preparation of nanocarriers and other compounds for CNS delivery has been covered. The last section focuses on current challenges and future perspectives of microfluidic experimentation.
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Affiliation(s)
- Maria Inês Teixeira
- UCIBIO-REQUIMTE, MedTech - Laboratory of Pharmaceutical Technology, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal; (M.I.T.); (M.H.A.); (P.C.C.)
- School of Pharmacy, Queen’s University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK
| | - Maria Helena Amaral
- UCIBIO-REQUIMTE, MedTech - Laboratory of Pharmaceutical Technology, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal; (M.I.T.); (M.H.A.); (P.C.C.)
| | - Paulo C. Costa
- UCIBIO-REQUIMTE, MedTech - Laboratory of Pharmaceutical Technology, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal; (M.I.T.); (M.H.A.); (P.C.C.)
| | - Carla M. Lopes
- FP-ENAS/CEBIMED, Fernando Pessoa Energy, Environment and Health Research Unit/Biomedical Research Centre, Faculty of Health Sciences, Fernando Pessoa University, Rua Carlos da Maia, 296, 4200-150 Porto, Portugal
| | - Dimitrios A. Lamprou
- School of Pharmacy, Queen’s University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK
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Daly AC, Riley L, Segura T, Burdick JA. Hydrogel microparticles for biomedical applications. NATURE REVIEWS. MATERIALS 2020; 5:20-43. [PMID: 34123409 PMCID: PMC8191408 DOI: 10.1038/s41578-019-0148-6] [Citation(s) in RCA: 506] [Impact Index Per Article: 126.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Hydrogel microparticles (HMPs) are promising for biomedical applications, ranging from the therapeutic delivery of cells and drugs to the production of scaffolds for tissue repair and bioinks for 3D printing. Biologics (cells and drugs) can be encapsulated into HMPs of predefined shapes and sizes using a variety of fabrication techniques (batch emulsion, microfluidics, lithography, electrohydrodynamic (EHD) spraying and mechanical fragmentation). HMPs can be formulated in suspensions to deliver therapeutics, as aggregates of particles (granular hydrogels) to form microporous scaffolds that promote cell infiltration or embedded within a bulk hydrogel to obtain multiscale behaviours. HMP suspensions and granular hydrogels can be injected for minimally invasive delivery of biologics, and they exhibit modular properties when comprised of mixtures of distinct HMP populations. In this Review, we discuss the fabrication techniques that are available for fabricating HMPs, as well as the multiscale behaviours of HMP systems and their functional properties, highlighting their advantages over traditional bulk hydrogels. Furthermore, we discuss applications of HMPs in the fields of cell delivery, drug delivery, scaffold design and biofabrication.
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Affiliation(s)
- Andrew C Daly
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, USA
- These authors contributed equally: Andrew C. Daly, Lindsay Riley
| | - Lindsay Riley
- Department of Biomedical Engineering, Duke University, Durham, NC, USA
- These authors contributed equally: Andrew C. Daly, Lindsay Riley
| | - Tatiana Segura
- Department of Biomedical Engineering, Duke University, Durham, NC, USA
- Departments of Dermatology and Neurology, Duke University, Durham, NC, USA
| | - Jason A Burdick
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, USA
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Wieduwild R, Xu Y, Ostrovidov S, Khademhosseini A, Zhang Y, Orive G. Engineering Hydrogels beyond a Hydrated Network. Adv Healthc Mater 2019; 8:e1900038. [PMID: 30990968 DOI: 10.1002/adhm.201900038] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Revised: 03/22/2019] [Indexed: 12/25/2022]
Abstract
In recent years, many mechanical, physical, chemical, and biochemical features of biomatrices have emerged as important properties to dictate the fates of cells. To construct chemically defined biomaterials to recapitulate various biological niches for both cell biology research and therapeutic utilities, it has become increasingly clear that a simple hydrated polymer network would not be able to provide the complex cues and signaling required for many types of cells. The researchers are facing a growing list of mechanophysical and biochemical properties, while each of them could be an important cellular trigger. To include all these design parameters in screening and synthesis is practically difficult, if not impossible. Developing novel high throughput screening technology by combining assay miniaturization, computer simulations, and modeling can help researchers to tackle the challenge to identify the most relevant parameters to tailor materials for specific applications.
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Affiliation(s)
- Robert Wieduwild
- Rudolf‐Schönheimer‐Institute of BiochemistryFaculty of MedicineLeipzig University Johannisallee 30 04103 Leipzig Germany
| | - Yong Xu
- B CUBE Center for Molecular BioengineeringTechnische Universität Dresden Tatzberg 41 01307 Dresden Germany
| | - Serge Ostrovidov
- Center for Minimally Invasive Therapeutics (C‐MIT) Los Angeles CA 90095 USA
- Department of Radiological SciencesUniversity of California ‐ Los Angeles Los Angeles CA 90095 USA
| | - Ali Khademhosseini
- Center for Minimally Invasive Therapeutics (C‐MIT) Los Angeles CA 90095 USA
- Department of BioengineeringUniversity of California ‐ Los Angeles Los Angeles CA 90095 USA
- Department of Radiological SciencesUniversity of California ‐ Los Angeles Los Angeles CA 90095 USA
- Department of Chemical and Biomolecular EngineeringUniversity of California ‐ Los Angeles Los Angeles CA 90095 USA
- California NanoSystems Institute (CNSI)University of California ‐ Los Angeles Los Angeles CA 90095 USA
| | - Yixin Zhang
- B CUBE Center for Molecular BioengineeringTechnische Universität Dresden Tatzberg 41 01307 Dresden Germany
| | - Gorka Orive
- NanoBioCel GroupLaboratory of PharmaceuticsSchool of PharmacyUniversity of the Basque Country UPV/EHU Paseo de la Universidad 7 01006 Vitoria‐Gasteiz Spain
- Biomedical Research Networking Centre in BioengineeringBiomaterials and Nanomedicine (CIBER‐BBN) Vitoria‐Gasteiz 01006 Spain
- University Institute for Regenerative Medicine and Oral Implantology ‐ UIRMI (UPV/EHU‐Fundación Eduardo Anitua) Vitoria 01007 Spain
- Singapore Eye Research InstituteThe Academia 20 College Road, Discovery Tower Singapore
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Karg M, Pich A, Hellweg T, Hoare T, Lyon LA, Crassous JJ, Suzuki D, Gumerov RA, Schneider S, Potemkin II, Richtering W. Nanogels and Microgels: From Model Colloids to Applications, Recent Developments, and Future Trends. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:6231-6255. [PMID: 30998365 DOI: 10.1021/acs.langmuir.8b04304] [Citation(s) in RCA: 310] [Impact Index Per Article: 62.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Nanogels and microgels are soft, deformable, and penetrable objects with an internal gel-like structure that is swollen by the dispersing solvent. Their softness and the potential to respond to external stimuli like temperature, pressure, pH, ionic strength, and different analytes make them interesting as soft model systems in fundamental research as well as for a broad range of applications, in particular in the field of biological applications. Recent tremendous developments in their synthesis open access to systems with complex architectures and compositions allowing for tailoring microgels with specific properties. At the same time state-of-the-art theoretical and simulation approaches offer deeper understanding of the behavior and structure of nano- and microgels under external influences and confinement at interfaces or at high volume fractions. Developments in the experimental analysis of nano- and microgels have become particularly important for structural investigations covering a broad range of length scales relevant to the internal structure, the overall size and shape, and interparticle interactions in concentrated samples. Here we provide an overview of the state-of-the-art, recent developments as well as emerging trends in the field of nano- and microgels. The following aspects build the focus of our discussion: tailoring (multi)functionality through synthesis; the role in biological and biomedical applications; the structure and properties as a model system, e.g., for densely packed arrangements in bulk and at interfaces; as well as the theory and computer simulation.
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Affiliation(s)
- Matthias Karg
- Physical Chemistry I , Heinrich-Heine-University Duesseldorf , 40204 Duesseldorf , Germany
| | - Andrij Pich
- DWI-Leibnitz-Institute for Interactive Materials e.V. , 52056 Aachen , Germany
- Functional and Interactive Polymers, Institute for Technical and Macromolecular Chemistry , RWTH Aachen University , 52056 Aachen , Germany
| | - Thomas Hellweg
- Physical and Biophysical Chemistry , Bielefeld University , 33615 Bielefeld , Germany
| | - Todd Hoare
- Department of Chemical Engineering , McMaster University , Hamilton , Ontario L8S 4L8 , Canada
| | - L Andrew Lyon
- Schmid College of Science and Technology , Chapman University , Orange , California 92866 , United States
| | - J J Crassous
- Institute of Physical Chemistry , RWTH Aachen University , 52056 Aachen , Germany
| | | | - Rustam A Gumerov
- DWI-Leibnitz-Institute for Interactive Materials e.V. , 52056 Aachen , Germany
- Physics Department , Lomonosov Moscow State University , Moscow 119991 , Russian Federation
| | - Stefanie Schneider
- Institute of Physical Chemistry , RWTH Aachen University , 52056 Aachen , Germany
| | - Igor I Potemkin
- DWI-Leibnitz-Institute for Interactive Materials e.V. , 52056 Aachen , Germany
- Physics Department , Lomonosov Moscow State University , Moscow 119991 , Russian Federation
- National Research South Ural State University , Chelyabinsk 454080 , Russian Federation
| | - Walter Richtering
- Institute of Physical Chemistry , RWTH Aachen University , 52056 Aachen , Germany
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George J, Hsu CC, Nguyen LTB, Ye H, Cui Z. Neural tissue engineering with structured hydrogels in CNS models and therapies. Biotechnol Adv 2019; 42:107370. [PMID: 30902729 DOI: 10.1016/j.biotechadv.2019.03.009] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Revised: 02/25/2019] [Accepted: 03/11/2019] [Indexed: 01/27/2023]
Abstract
The development of techniques to create and use multiphase microstructured hydrogels (granular hydrogels or microgels) has enabled the generation of cultures with more biologically relevant architecture and use of structured hydrogels is especially pertinent to the development of new types of central nervous system (CNS) culture models and therapies. We review material choice and the customisation of hydrogel structure, as well as the use of hydrogels in developmental models. Combining the use of structured hydrogel techniques with developmentally relevant tissue culture approaches will enable the generation of more relevant models and treatments to repair damaged CNS tissue architecture.
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Affiliation(s)
- Julian George
- Institute of Biomedical Engineering, Department of Engineering Science, University of Oxford, Oxford, United Kingdom
| | - Chia-Chen Hsu
- Institute of Biomedical Engineering, Department of Engineering Science, University of Oxford, Oxford, United Kingdom
| | - Linh Thuy Ba Nguyen
- Institute of Biomedical Engineering, Department of Engineering Science, University of Oxford, Oxford, United Kingdom
| | - Hua Ye
- Institute of Biomedical Engineering, Department of Engineering Science, University of Oxford, Oxford, United Kingdom.
| | - Zhanfeng Cui
- Institute of Biomedical Engineering, Department of Engineering Science, University of Oxford, Oxford, United Kingdom.
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14
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Joddar B, Tasnim N, Thakur V, Kumar A, McCallum RW, Chattopadhyay M. Delivery of Mesenchymal Stem Cells from Gelatin-Alginate Hydrogels to Stomach Lumen for Treatment of Gastroparesis. Bioengineering (Basel) 2018; 5:E12. [PMID: 29414870 PMCID: PMC5874878 DOI: 10.3390/bioengineering5010012] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Revised: 02/02/2018] [Accepted: 02/04/2018] [Indexed: 12/12/2022] Open
Abstract
Gastroparesis (GP) is associated with depletion of interstitial cells of Cajal (ICCs) and enteric neurons, which leads to pyloric dysfunction followed by severe nausea, vomiting and delayed gastric emptying. Regenerating these fundamental structures with mesenchymal stem cell (MSC) therapy would be helpful to restore gastric function in GP. MSCs have been successfully used in animal models of other gastrointestinal (GI) diseases, including colitis. However, no study has been performed with these cells on GP animals. In this study, we explored whether mouse MSCs can be delivered from a hydrogel scaffold to the luminal surfaces of mice stomach explants. Mouse MSCs were seeded atop alginate-gelatin, coated with poly-l-lysine. These cell-gel constructs were placed atop stomach explants facing the luminal side. MSCs grew uniformly all across the gel surface within 48 h. When placed atop the lumen of the stomach, MSCs migrated from the gels to the tissues, as confirmed by positive staining with vimentin and N-cadherin. Thus, the feasibility of transplanting a cell-gel construct to deliver stem cells in the stomach wall was successfully shown in a mice stomach explant model, thereby making a significant advance towards envisioning the transplantation of an entire tissue-engineered 'gastric patch' or 'microgels' with cells and growth factors.
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Affiliation(s)
- Binata Joddar
- Inspired Materials & Stem-Cell Based Tissue Engineering Laboratory (IMSTEL), Department of Metallurgical, Materials and Biomedical Engineering, University of Texas at El Paso, 500 W University Avenue, El Paso, TX 79968, USA.
- Border Biomedical Research Center, University of Texas at El Paso, 500 W University Avenue, El Paso, TX 79968, USA.
| | - Nishat Tasnim
- Inspired Materials & Stem-Cell Based Tissue Engineering Laboratory (IMSTEL), Department of Metallurgical, Materials and Biomedical Engineering, University of Texas at El Paso, 500 W University Avenue, El Paso, TX 79968, USA.
| | - Vikram Thakur
- Department of Biomedical Sciences, Center of Emphasis in Diabetes and Metabolism, Texas Tech University Health Sciences Center, 5001 El Paso Drive, El Paso, TX 79905, USA.
| | - Alok Kumar
- Inspired Materials & Stem-Cell Based Tissue Engineering Laboratory (IMSTEL), Department of Metallurgical, Materials and Biomedical Engineering, University of Texas at El Paso, 500 W University Avenue, El Paso, TX 79968, USA.
| | - Richard W McCallum
- Department of Internal Medicine, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, 4800 Alberta Avenue, El Paso, TX 79905, USA.
| | - Munmun Chattopadhyay
- Department of Biomedical Sciences, Center of Emphasis in Diabetes and Metabolism, Texas Tech University Health Sciences Center, 5001 El Paso Drive, El Paso, TX 79905, USA.
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15
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Kim M, Kim JS, Lee H, Jang JH. Polydopamine-Decorated Sticky, Water-Friendly, Biodegradable Polycaprolactone Cell Carriers. Macromol Biosci 2016; 16:738-47. [DOI: 10.1002/mabi.201500432] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Indexed: 01/18/2023]
Affiliation(s)
- Minhee Kim
- Department of Chemical and Biomolecular Engineering; Yonsei University; 120-749 Seoul Korea
| | - Jung-Suk Kim
- Department of Chemical and Biomolecular Engineering; Yonsei University; 120-749 Seoul Korea
| | - Haeshin Lee
- The Graduate School of Nanoscience and Technology; KAIST; 305-701 Daejeon Korea
- Department of Chemistry; KAIST; 305-701 Daejeon Korea
| | - Jae-Hyung Jang
- Department of Chemical and Biomolecular Engineering; Yonsei University; 120-749 Seoul Korea
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16
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Wang TG, Xu J, Zhu AH, Lu H, Miao ZN, Zhao P, Hui GZ, Wu WJ. Human amniotic epithelial cells combined with silk fibroin scaffold in the repair of spinal cord injury. Neural Regen Res 2016; 11:1670-1677. [PMID: 27904501 PMCID: PMC5116849 DOI: 10.4103/1673-5374.193249] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Treatment and functional reconstruction after central nervous system injury is a major medical and social challenge. An increasing number of researchers are attempting to use neural stem cells combined with artificial scaffold materials, such as fibroin, for nerve repair. However, such approaches are challenged by ethical and practical issues. Amniotic tissue, a clinical waste product, is abundant, and amniotic epithelial cells are pluripotent, have low immunogenicity, and are not the subject of ethical debate. We hypothesized that amniotic epithelial cells combined with silk fibroin scaffolds would be conducive to the repair of spinal cord injury. To test this, we isolated and cultured amniotic epithelial cells, and constructed complexes of these cells and silk fibroin scaffolds. Implantation of the cell-scaffold complex into a rat model of spinal cord injury resulted in a smaller glial scar in the damaged cord tissue than in model rats that received a blank scaffold, or amniotic epithelial cells alone. In addition to a milder local immunological reaction, the rats showed less inflammatory cell infiltration at the transplant site, milder host-versus-graft reaction, and a marked improvement in motor function. These findings confirm that the transplantation of amniotic epithelial cells combined with silk fibroin scaffold can promote the repair of spinal cord injury. Silk fibroin scaffold can provide a good nerve regeneration microenvironment for amniotic epithelial cells.
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Affiliation(s)
- Ting-Gang Wang
- Department of Neurology, Wuxi Third People's Hospital, Wuxi, Jiangsu Province, China
| | - Jie Xu
- Department of Neurosurgery, Wuxi Third People's Hospital, Wuxi, Jiangsu Province, China
| | - Ai-Hua Zhu
- Department of Neurosurgery, Wuxi Third People's Hospital, Wuxi, Jiangsu Province, China
| | - Hua Lu
- Department of Neurosurgery, Wuxi Third People's Hospital, Wuxi, Jiangsu Province, China
| | - Zong-Ning Miao
- Department of Neurosurgery, Wuxi Third People's Hospital, Wuxi, Jiangsu Province, China
| | - Peng Zhao
- Department of Neurosurgery, Wuxi Third People's Hospital, Wuxi, Jiangsu Province, China
| | - Guo-Zhen Hui
- First Affiliated Hospital, Soochow University, Suzhou, Jiangsu Province, China
| | - Wei-Jiang Wu
- Department of Neurosurgery, Wuxi Third People's Hospital, Wuxi, Jiangsu Province, China
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17
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Lück S, Schubel R, Rüb J, Hahn D, Mathieu E, Zimmermann H, Scharnweber D, Werner C, Pautot S, Jordan R. Tailored and biodegradable poly(2-oxazoline) microbeads as 3D matrices for stem cell culture in regenerative therapies. Biomaterials 2015; 79:1-14. [PMID: 26686977 DOI: 10.1016/j.biomaterials.2015.11.045] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Revised: 11/09/2015] [Accepted: 11/29/2015] [Indexed: 12/11/2022]
Abstract
We present the synthesis of hydrogel microbeads based on telechelic poly(2-oxazoline) (POx) crosslinkers and the methacrylate monomers (HEMA, METAC, SPMA) by inverse emulsion polymerization. While in batch experiments only irregular and ill-defined beads were obtained, the preparation in a microfluidic (MF) device resulted in highly defined hydrogel microbeads. Variation of the MF parameters allowed to control the microbead diameter from 50 to 500 μm. Microbead elasticity could be tuned from 2 to 20 kPa by the POx:monomer composition, the POx chain length, net charge of the hydrogel introduced via the monomer as well as by the organic content of the aqueous phase. The proliferations of human mesenchymal stem cells (hMSCs) on the microbeads were studied. While neutral, hydrophilic POx-PHEMA beads were bioinert, excessive colonization of hMSCs on charged POx-PMETAC and POx-PSPMA was observed. The number of proliferated cells scaled roughly linear with the METAC or SPMA comonomer content. Additional collagen I coating further improved the stem cell proliferation. Finally, a first POx-based system for the preparation of biodegradable hydrogel microcarriers is described and evaluated for stem cell culturing.
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Affiliation(s)
- Steffen Lück
- Professur für Makromolekulare Chemie, Department Chemie, Technische Universität Dresden, Mommsenstr. 4, 01069, Dresden, Germany; Center for Regenerative Therapies Dresden (CRTD), Fetcherstr. 105, 01307, Dresden, Germany; Dresden Initiative for Bioactive Interfaces & Materials, Technische Universität Dresden, Mommsenstr. 4, 01069, Dresden, Germany
| | - René Schubel
- Professur für Makromolekulare Chemie, Department Chemie, Technische Universität Dresden, Mommsenstr. 4, 01069, Dresden, Germany
| | - Jannick Rüb
- Professur für Makromolekulare Chemie, Department Chemie, Technische Universität Dresden, Mommsenstr. 4, 01069, Dresden, Germany; Dresden Initiative for Bioactive Interfaces & Materials, Technische Universität Dresden, Mommsenstr. 4, 01069, Dresden, Germany
| | - Dominik Hahn
- Dresden Initiative for Bioactive Interfaces & Materials, Technische Universität Dresden, Mommsenstr. 4, 01069, Dresden, Germany; Max-Bergmann Center of Biomaterials Dresden, Budapester Str. 27, 01069, Dresden, Germany
| | - Evelien Mathieu
- Center for Regenerative Therapies Dresden (CRTD), Fetcherstr. 105, 01307, Dresden, Germany
| | - Heike Zimmermann
- Max-Bergmann Center of Biomaterials Dresden, Budapester Str. 27, 01069, Dresden, Germany
| | - Dieter Scharnweber
- Max-Bergmann Center of Biomaterials Dresden, Budapester Str. 27, 01069, Dresden, Germany
| | - Carsten Werner
- Dresden Initiative for Bioactive Interfaces & Materials, Technische Universität Dresden, Mommsenstr. 4, 01069, Dresden, Germany; Max-Bergmann Center of Biomaterials Dresden, Budapester Str. 27, 01069, Dresden, Germany
| | - Sophie Pautot
- Center for Regenerative Therapies Dresden (CRTD), Fetcherstr. 105, 01307, Dresden, Germany.
| | - Rainer Jordan
- Professur für Makromolekulare Chemie, Department Chemie, Technische Universität Dresden, Mommsenstr. 4, 01069, Dresden, Germany; Center for Regenerative Therapies Dresden (CRTD), Fetcherstr. 105, 01307, Dresden, Germany; Dresden Initiative for Bioactive Interfaces & Materials, Technische Universität Dresden, Mommsenstr. 4, 01069, Dresden, Germany.
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18
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Cell-laden Polymeric Microspheres for Biomedical Applications. Trends Biotechnol 2015; 33:653-666. [DOI: 10.1016/j.tibtech.2015.09.003] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2015] [Revised: 08/10/2015] [Accepted: 09/08/2015] [Indexed: 01/16/2023]
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19
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Newland B, Welzel PB, Newland H, Renneberg C, Kolar P, Tsurkan M, Rosser A, Freudenberg U, Werner C. Tackling Cell Transplantation Anoikis: An Injectable, Shape Memory Cryogel Microcarrier Platform Material for Stem Cell and Neuronal Cell Growth. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 11:5047-53. [PMID: 26237446 PMCID: PMC5656175 DOI: 10.1002/smll.201500898] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Revised: 06/03/2015] [Indexed: 05/19/2023]
Abstract
Highly macroporous semisynthetic cryogel microcarriers can be synthesized for culturing stem cells and neuronal type cells. Growth factors loaded to heparin-containing microcarriers show near zero-order release kinetics and cell-loaded microcarriers can be injected through a fine gauge cannula without negative effect on the cells. These carriers can be applied for cell transplantation applications.
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Affiliation(s)
- Ben Newland
- Leibniz Institute of Polymer Research Dresden (IPF), Max Bergmann Center of Biomaterials Dresden (MBC) and Technische Universität Dresden (TUD), Center for Regenerative Therapies Dresden (CRTD) Hohe Str. 6, 01069 Dresden, Germany; Brain Repair Group, School of Biosciences, Cardiff University, Cardiff, CF10 3AX, Wales, UK
| | - Petra B. Welzel
- Leibniz Institute of Polymer Research Dresden (IPF), Max Bergmann Center of Biomaterials Dresden (MBC) and Technische Universität Dresden (TUD), Center for Regenerative Therapies Dresden (CRTD) Hohe Str. 6, 01069 Dresden, Germany
| | - Heike Newland
- Leibniz Institute of Polymer Research Dresden (IPF), Max Bergmann Center of Biomaterials Dresden (MBC) and Technische Universität Dresden (TUD), Center for Regenerative Therapies Dresden (CRTD) Hohe Str. 6, 01069 Dresden, Germany
| | - Claudia Renneberg
- Leibniz Institute of Polymer Research Dresden (IPF), Max Bergmann Center of Biomaterials Dresden (MBC) and Technische Universität Dresden (TUD), Center for Regenerative Therapies Dresden (CRTD) Hohe Str. 6, 01069 Dresden, Germany
| | - Petr Kolar
- Leibniz Institute of Polymer Research Dresden (IPF), Max Bergmann Center of Biomaterials Dresden (MBC) and Technische Universität Dresden (TUD), Center for Regenerative Therapies Dresden (CRTD) Hohe Str. 6, 01069 Dresden, Germany
| | - Mikhail Tsurkan
- Leibniz Institute of Polymer Research Dresden (IPF), Max Bergmann Center of Biomaterials Dresden (MBC) and Technische Universität Dresden (TUD), Center for Regenerative Therapies Dresden (CRTD) Hohe Str. 6, 01069 Dresden, Germany
| | - Anne Rosser
- Brain Repair Group, School of Biosciences, Cardiff University, Cardiff, CF10 3AX, Wales, UK
| | - Uwe Freudenberg
- Leibniz Institute of Polymer Research Dresden (IPF), Max Bergmann Center of Biomaterials Dresden (MBC) and Technische Universität Dresden (TUD), Center for Regenerative Therapies Dresden (CRTD) Hohe Str. 6, 01069 Dresden, Germany
| | - Carsten Werner
- Leibniz Institute of Polymer Research Dresden (IPF), Max Bergmann Center of Biomaterials Dresden (MBC) and Technische Universität Dresden (TUD), Center for Regenerative Therapies Dresden (CRTD) Hohe Str. 6, 01069 Dresden, Germany
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20
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Griffin DR, Weaver WM, Scumpia PO, Di Carlo D, Segura T. Accelerated wound healing by injectable microporous gel scaffolds assembled from annealed building blocks. NATURE MATERIALS 2015; 14:737-44. [PMID: 26030305 PMCID: PMC4615579 DOI: 10.1038/nmat4294] [Citation(s) in RCA: 572] [Impact Index Per Article: 63.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2014] [Accepted: 04/15/2015] [Indexed: 04/14/2023]
Abstract
Injectable hydrogels can provide a scaffold for in situ tissue regrowth and regeneration, yet gel degradation before tissue reformation limits the gels' ability to provide physical support. Here, we show that this shortcoming can be circumvented through an injectable, interconnected microporous gel scaffold assembled from annealed microgel building blocks whose chemical and physical properties can be tailored by microfluidic fabrication. In vitro, cells incorporated during scaffold formation proliferated and formed extensive three-dimensional networks within 48 h. In vivo, the scaffolds facilitated cell migration that resulted in rapid cutaneous-tissue regeneration and tissue-structure formation within five days. The combination of microporosity and injectability of these annealed gel scaffolds should enable novel routes to tissue regeneration and formation in vivo.
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Affiliation(s)
- Donald R Griffin
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, Los Angeles, California 90095, USA
| | - Westbrook M Weaver
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, California 90095, USA
| | - Philip O Scumpia
- Division of Dermatology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California 90095, USA
| | - Dino Di Carlo
- Department of Bioengineering, California NanoSystems Institute, Jonsson Comprehensive Cancer Center, University of California, Los Angeles, Los Angeles, California 90095, USA
| | - Tatiana Segura
- Department of Chemical and Biomolecular Engineering, California NanoSystems Institute, Jonsson Comprehensive Cancer Center, University of California, Los Angeles, Los Angeles, California 90095, USA
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21
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Platen M, Mathieu E, Lück S, Schubel R, Jordan R, Pautot S. Poly(2-oxazoline)-Based Microgel Particles for Neuronal Cell Culture. Biomacromolecules 2015; 16:1516-24. [DOI: 10.1021/bm501879h] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mitja Platen
- Center
for Regenerative Therapies Dresden, Technische Universität Dresden, Fetscherstraße 105, 01307 Dresden, Germany
| | - Evelien Mathieu
- Center
for Regenerative Therapies Dresden, Technische Universität Dresden, Fetscherstraße 105, 01307 Dresden, Germany
| | - Steffen Lück
- Professur
für Makromolekulare Chemie, Department Chemie, Technische Universität Dresden, Mommsenstraße 4, 01069 Dresden, Germany
- Dresden Initiative for Bioactive Interfaces & Materials, Technische Universität Dresden, Mommsenstraße 4, 01069 Dresden, Germany
| | - René Schubel
- Professur
für Makromolekulare Chemie, Department Chemie, Technische Universität Dresden, Mommsenstraße 4, 01069 Dresden, Germany
- Dresden Initiative for Bioactive Interfaces & Materials, Technische Universität Dresden, Mommsenstraße 4, 01069 Dresden, Germany
| | - Rainer Jordan
- Center
for Regenerative Therapies Dresden, Technische Universität Dresden, Fetscherstraße 105, 01307 Dresden, Germany
- Professur
für Makromolekulare Chemie, Department Chemie, Technische Universität Dresden, Mommsenstraße 4, 01069 Dresden, Germany
- Dresden Initiative for Bioactive Interfaces & Materials, Technische Universität Dresden, Mommsenstraße 4, 01069 Dresden, Germany
| | - Sophie Pautot
- Center
for Regenerative Therapies Dresden, Technische Universität Dresden, Fetscherstraße 105, 01307 Dresden, Germany
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