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Wen Z, Chen Y, Liao P, Wang F, Zeng W, Liu S, Wu H, Wang N, Moroni L, Zhang M, Duan Y, Chen H. In Situ Precision Cell Electrospinning as an Efficient Stem Cell Delivery Approach for Cutaneous Wound Healing. Adv Healthc Mater 2023; 12:e2300970. [PMID: 37379527 DOI: 10.1002/adhm.202300970] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 06/10/2023] [Indexed: 06/30/2023]
Abstract
Mesenchymal stem cell (MSC) therapies have been brought forward as a promising treatment modality for cutaneous wound healing. However, current approaches for stem cell delivery have many drawbacks, such as lack of targetability and cell loss, leading to poor efficacy of stem cell therapy. To overcome these problems, in the present study, an in situ cell electrospinning system is developed as an attractive approach for stem cell delivery. MSCs have a high cell viability of over 90% even with a high applied voltage of 15 kV post-cell electrospinning process. In addition, cell electrospinning does not show any negative effect on the surface marker expression and differentiation capacity of MSCs. In vivo studies demonstrate that in situ cell electrospinning treatment can promote cutaneous wound healing through direct deposition of bioactive fish gelatin fibers and MSCs onto wound sites, leading to a synergic therapeutic effect. The approach enhances extracellular matrix remodeling by increasing collagen deposition, promotes angiogenesis by increasing the expression of vascular endothelial growth factor (VEGF) and forming small blood vessels, and dramatically reduces the expression of interleukin-6 (IL-6) during wound healing. The use of in situ cell electrospinning system potentially provides a rapid, no touch, personalized treatment for cutaneous wound healing.
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Affiliation(s)
- Zhengbo Wen
- Laboratory of Stem Cells and Translational Medicine, School of Medicine, South China University of Technology, Guangzhou, 510006, China
| | - Yuxin Chen
- Laboratory of Stem Cells and Translational Medicine, School of Medicine, South China University of Technology, Guangzhou, 510006, China
| | - Peilin Liao
- Laboratory of Stem Cells and Translational Medicine, School of Medicine, South China University of Technology, Guangzhou, 510006, China
| | - Fengyu Wang
- Laboratory of Stem Cells and Translational Medicine, School of Medicine, South China University of Technology, Guangzhou, 510006, China
| | - Weiping Zeng
- Laboratory of Stem Cells and Translational Medicine, School of Medicine, South China University of Technology, Guangzhou, 510006, China
| | - Shoupei Liu
- Laboratory of Stem Cells and Translational Medicine, School of Medicine, South China University of Technology, Guangzhou, 510006, China
| | - Haibing Wu
- Laboratory of Stem Cells and Translational Medicine, School of Medicine, South China University of Technology, Guangzhou, 510006, China
| | - Ning Wang
- Laboratory of Stem Cells and Translational Medicine, School of Medicine, South China University of Technology, Guangzhou, 510006, China
| | - Lorenzo Moroni
- MERLN Institute for Technology-Inspired Regenerative Medicine, Complex Tissue Regeneration Department, Maastricht University, Maastricht, 6229 ER, The Netherlands
| | - Minmin Zhang
- Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices, School of Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou, 510006, China
| | - Yuyou Duan
- Laboratory of Stem Cells and Translational Medicine, School of Medicine, South China University of Technology, Guangzhou, 510006, China
- National Engineering Research Centre for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou, 510006, China
| | - Honglin Chen
- Laboratory of Stem Cells and Translational Medicine, School of Medicine, South China University of Technology, Guangzhou, 510006, China
- Medical Research Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, 510080, China
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Nosoudi N, Hasanzadeh A, Hart M, Weaver B. Advancements and Future Perspectives in Cell Electrospinning and Bio-Electrospraying. Adv Biol (Weinh) 2023; 7:e2300213. [PMID: 37438326 DOI: 10.1002/adbi.202300213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 06/29/2023] [Indexed: 07/14/2023]
Abstract
In recent years, researchers have tried to include living cells into electrospun nanofibers or droplets, leading to the field of live cell electrospinning and bio-electrospraying . In live cell electrospinning and bio-electrospraying, cells are embedded in a polymer and subject to the process of mechanical and electrical stimulation of the process. The resulting nanofiber mats or droplets with embedded cells have several potential applications in tissue engineering. The nanofiber structure provides a supportive and porous environment for cells to grow and interact with their surroundings. This can be favorable for tissue regeneration, where the goal is to create functional tissues that closely mimic the extracellular matrix. However, there are also challenges associated with live cell electrospinning and electrospraying, including maintaining cell viability and uniform cell distribution within the nanofiber mat. Additionally, the electrospinning/electrospraying process can have an impact on cell behavior, phenotype, and genotype, which must be cautiously monitored and studied. Overall, the goal of this review paper is to provide a comprehensive and critical analysis of the existing literature on cell electrospinning and bio-electrospraying.
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Affiliation(s)
- Nasim Nosoudi
- Biomedical Engineering Department, College of Engineering and Computer Science, Marshall University, Huntington, WV, 25755-2586, USA
| | - Amin Hasanzadeh
- Department of Polymer Engineering, Amirkabir University of Technology, Tehran, 1591634311, Iran
| | - Madeline Hart
- Biomedical Engineering Department, College of Engineering and Computer Science, Marshall University, Huntington, WV, 25755-2586, USA
| | - Baylee Weaver
- Biomedical Engineering Department, College of Engineering and Computer Science, Marshall University, Huntington, WV, 25755-2586, USA
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3
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Schot M, Araújo-Gomes N, van Loo B, Kamperman T, Leijten J. Scalable fabrication, compartmentalization and applications of living microtissues. Bioact Mater 2023; 19:392-405. [PMID: 35574053 PMCID: PMC9062422 DOI: 10.1016/j.bioactmat.2022.04.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 03/18/2022] [Accepted: 04/06/2022] [Indexed: 10/27/2022] Open
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Hodge JG, Quint C. Improved porosity of electrospun poly (Lactic-Co-Glycolic) scaffolds by sacrificial microparticles enhances cellular infiltration compared to sacrificial microfiber. J Biomater Appl 2022; 37:77-88. [PMID: 35317691 DOI: 10.1177/08853282221075890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Electrospinning is a technique used to fabricate nano-/microfiber scaffolds for tissue engineering applications. However, a major limitation of electrospun scaffolds is the high packing density of fibers that leads to poor cellular infiltration. Thus, incorporation of a water soluble sacrificial porogen, polyethylene oxide (PEO), was utilized to fine-tune the porous fraction of the scaffolds and decrease fiber packing density. Poly(lactic-co-glycolic) acid (PLGA) scaffolds were either co-electrospun with sacrificial PEO microfibers or co-electrosprayed with sacrificial PEO microparticles at three different extrusion rates to control the relative morphology and dose of PEO. A dose-dependent response in PLGA scaffold bulk porosity and pore area was noted as PEO content was increased. Notably, PLGA scaffolds after removal of sacrificial PEO microparticles significantly increased the porous fraction and pore area approximately 8, 10, and 14% and 46, 20, and 33 μm2, respectively, relative to the analogous PEO microfiber scaffold. The tensile properties of the more porous PLGA scaffolds after PEO microparticle removal, remained stable for all extrusion rates of PEO tested, relative to the PLGA scaffolds after PEO microfiber removal. Histological analysis revealed that removal of PEO microparticles significantly increased the depth of cellular migration through the PLGA scaffolds, relative to PEO microfiber scaffolds, with maximum migratory depths of 1120 μm versus 150 μm over 28 days, respectively. Additionally, depth of cellular infiltration responded dose-dependently in the PEO microparticle scaffolds, whereas in the PEO microfiber scaffolds there was no correlation. Further analysis with Masson's Trichrome staining and electron microscopy revealed that collagen density and depth of deposition substantially increased in PLGA scaffolds after removal of PEO microparticles relative to PEO microfibers. Thus, this study demonstrates an effective strategy to control the porous fraction of electrospun scaffolds via the incorporation of sacrificial PEO microparticles, without significant decreases in mechanical properties, thereby enhancing cellular infiltration and subsequent extracellular matrix deposition.
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Affiliation(s)
- Jacob G Hodge
- Department of Bioengineering, 199644University of Kansas School of Engineering, Lawrence, KS, USA
| | - Clay Quint
- Department of Surgery, 20118South Texas Veterans Health Care System, San Antonio, TX, USA
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5
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Semitela Â, Ramalho G, Capitão A, Sousa C, Mendes AF, Aap Marques P, Completo A. Bio-electrospraying assessment toward in situ chondrocyte-laden electrospun scaffold fabrication. J Tissue Eng 2022; 13:20417314211069342. [PMID: 35024136 PMCID: PMC8743920 DOI: 10.1177/20417314211069342] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Accepted: 12/09/2021] [Indexed: 01/05/2023] Open
Abstract
Electrospinning has been widely used to fabricate fibrous scaffolds for cartilage tissue engineering, but their small pores severely restrict cell infiltration, resulting in an uneven distribution of cells across the scaffold, particularly in three-dimensional designs. If bio-electrospraying is applied, direct chondrocyte incorporation into the fibers during electrospinning may be a solution. However, before this approach can be effectively employed, it is critical to identify whether chondrocytes are adversely affected. Several electrospraying operating settings were tested to determine their effect on the survival and function of an immortalized human chondrocyte cell line. These chondrocytes survived through an electric field formed by low needle-to-collector distances and low voltage. No differences in chondrocyte viability, morphology, gene expression, or proliferation were found. Preliminary data of the combination of electrospraying and polymer electrospinning disclosed that chondrocyte integration was feasible using an alternated approach. The overall increase in chondrocyte viability over time indicated that the embedded cells retained their proliferative capacity. Besides the cell line, primary chondrocytes were also electrosprayed under the previously optimized operational conditions, revealing the higher sensitivity degree of these cells. Still, their post-electrosprayed viability remained considerably high. The data reported here further suggest that bio-electrospraying under the optimal operational conditions might be a promising alternative to the existent cell seeding techniques, promoting not only cells safe delivery to the scaffold, but also the development of cellularized cartilage tissue constructs.
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Affiliation(s)
- Ângela Semitela
- Centre of Mechanical Technology and Automation (TEMA), Department of Mechanical Engineering, University of Aveiro, Aveiro, Portugal
| | - Gonçalo Ramalho
- Centre of Mechanical Technology and Automation (TEMA), Department of Mechanical Engineering, University of Aveiro, Aveiro, Portugal
| | - Ana Capitão
- Centre for Neuroscience and Cell Biology (CNC), University of Coimbra, Coimbra, Portugal
| | - Cátia Sousa
- Centre for Neuroscience and Cell Biology (CNC), University of Coimbra, Coimbra, Portugal
| | - Alexandrina F Mendes
- Centre for Neuroscience and Cell Biology (CNC), University of Coimbra, Coimbra, Portugal
| | - Paula Aap Marques
- Centre of Mechanical Technology and Automation (TEMA), Department of Mechanical Engineering, University of Aveiro, Aveiro, Portugal
| | - António Completo
- Centre of Mechanical Technology and Automation (TEMA), Department of Mechanical Engineering, University of Aveiro, Aveiro, Portugal
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Shao Y, Zhou Y, Liu Y, Zhang W, Zhu G, Zhao Y, Zhang Q, Yao H, Zhao H, Guo G, Zhang S, Zhang X, Wang X. Intact living-cell electrolaunching ionization mass spectrometry for single-cell metabolomics. Chem Sci 2022; 13:8065-8073. [PMID: 35919431 PMCID: PMC9278508 DOI: 10.1039/d2sc02569h] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Accepted: 06/17/2022] [Indexed: 11/21/2022] Open
Abstract
A novel living-cell mass spectrometry method allows a whole cell to enter entirely into the MS inlet and ionize with almost no sample dilution and matrix interference, which greatly improves the sensitivity of single-cell metabolite detection.
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Affiliation(s)
- Yunlong Shao
- Department of Chemistry and Biology, Center of Excellence for Environmental Safety and Biological Effects, Beijing Key Laboratory for Green Catalysis and Separation, Beijing University of Technology, Beijing 100124, P. R. China
| | - Yingyan Zhou
- Department of Chemistry and Biology, Center of Excellence for Environmental Safety and Biological Effects, Beijing Key Laboratory for Green Catalysis and Separation, Beijing University of Technology, Beijing 100124, P. R. China
| | - Yuanxing Liu
- Department of Chemistry and Biology, Center of Excellence for Environmental Safety and Biological Effects, Beijing Key Laboratory for Green Catalysis and Separation, Beijing University of Technology, Beijing 100124, P. R. China
| | - Wenmei Zhang
- Department of Chemistry and Biology, Center of Excellence for Environmental Safety and Biological Effects, Beijing Key Laboratory for Green Catalysis and Separation, Beijing University of Technology, Beijing 100124, P. R. China
| | - Guizhen Zhu
- Department of Chemistry and Biology, Center of Excellence for Environmental Safety and Biological Effects, Beijing Key Laboratory for Green Catalysis and Separation, Beijing University of Technology, Beijing 100124, P. R. China
| | - Yaoyao Zhao
- Department of Chemistry and Biology, Center of Excellence for Environmental Safety and Biological Effects, Beijing Key Laboratory for Green Catalysis and Separation, Beijing University of Technology, Beijing 100124, P. R. China
| | - Qi Zhang
- Department of Chemistry and Biology, Center of Excellence for Environmental Safety and Biological Effects, Beijing Key Laboratory for Green Catalysis and Separation, Beijing University of Technology, Beijing 100124, P. R. China
| | - Huan Yao
- Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
| | - Hansen Zhao
- Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
| | - Guangsheng Guo
- Department of Chemistry and Biology, Center of Excellence for Environmental Safety and Biological Effects, Beijing Key Laboratory for Green Catalysis and Separation, Beijing University of Technology, Beijing 100124, P. R. China
- Minzu University of China, Beijing 100081, P. R. China
| | - Sichun Zhang
- Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
| | - Xinrong Zhang
- Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
| | - Xiayan Wang
- Department of Chemistry and Biology, Center of Excellence for Environmental Safety and Biological Effects, Beijing Key Laboratory for Green Catalysis and Separation, Beijing University of Technology, Beijing 100124, P. R. China
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Schüttler KF, Bauhofer MW, Ketter V, Giese K, Eschbach DA, Yenigün M, Fuchs-Winkelmann S, Paletta JRJ. Direct incorporation of mesenchymal stem cells into a Nanofiber scaffold - in vitro and in vivo analysis. Sci Rep 2020; 10:9557. [PMID: 32533010 PMCID: PMC7293317 DOI: 10.1038/s41598-020-66281-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Accepted: 05/13/2020] [Indexed: 11/08/2022] Open
Abstract
Bony defects are a common problem in musculoskeletal surgery. Replacement with autologous bone grafts is limited by availability of transplant material. Sterilized cancellous bone, while being osteoconductive, has limited osteoinductivity. Nanofiber scaffolds are currently used for several purposes due to their capability of imitating the extracellular matrix. Furthermore, they allow modification to provide functional properties. Previously we showed that electrospun nanofiber scaffolds can be used for bone tissue regeneration. While aiming to use the osteoinductive capacities of collagen type-I nanofibers we saw reduced scaffold pore sizes that limited cellular migration and thus colonization of the scaffolds. Aim of the present study was the incorporation of mesenchymal stem cells into the electrospinning process of a nanofiber scaffold to produce cell-seeded nanofiber scaffolds for bone replacement. After construction of a suitable spinning apparatus for simultaneous electrospinning and spraying with independently controllable spinning and spraying devices and extensive optimization of the spinning process, in vitro and in vivo evaluation of the resulting scaffolds was conducted. Stem cells isolated from rat femora were incorporated into PLLA (poly-l-lactide acid) and PLLA-collagen type-I nanofiber scaffolds (PLLA Col I Blend) via simultaneous electrospinning and -spraying. Metabolic activity, proliferation and osteoblastic differentiation were assessed in vitro. For in vivo evaluation scaffolds were implanted into critical size defects of the rat scull. After 4 weeks, animals were sacrificed and bone healing was analyzed using CT-scans, histological, immunhistochemical and fluorescence evaluation. Successful integration of mesenchymal stem cells into the scaffolds was achieved by iteration of spinning and spraying conditions regarding polymer solvent, spinning distance, the use of a liquid counter-electrode, electrode voltage and spinning duration. In vivo formation of bone tissue was achieved. Using a PLLA scaffold, comparable results for the cell-free and cell-seeded scaffolds were found, while the cell-seeded PLLA-collagen scaffolds showed significantly better bone formation when compared to the cell-free PLLA-collagen scaffolds. These results provide support for the future use of cell-seeded nanofiber scaffolds for large bony defects.
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Affiliation(s)
- Karl F Schüttler
- Center for Orthopedics and Trauma Surgery, University Hospital Giessen and Marburg, Location Marburg, Marburg, Germany
| | - Michael W Bauhofer
- Center for Orthopedics and Trauma Surgery, University Hospital Giessen and Marburg, Location Marburg, Marburg, Germany
| | - Vanessa Ketter
- Center for Orthopedics and Trauma Surgery, University Hospital Giessen and Marburg, Location Marburg, Marburg, Germany
| | - Katja Giese
- Center for Orthopedics and Trauma Surgery, University Hospital Giessen and Marburg, Location Marburg, Marburg, Germany
| | - Daphne A Eschbach
- Center for Orthopedics and Trauma Surgery, University Hospital Giessen and Marburg, Location Marburg, Marburg, Germany
| | - Mesut Yenigün
- Department of Neurology, University Hospital Giessen and Marburg, Location Giessen, Giessen, Germany
| | - Susanne Fuchs-Winkelmann
- Center for Orthopedics and Trauma Surgery, University Hospital Giessen and Marburg, Location Marburg, Marburg, Germany
| | - Jürgen R J Paletta
- Center for Orthopedics and Trauma Surgery, University Hospital Giessen and Marburg, Location Marburg, Marburg, Germany.
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Helenes González C, Jayasinghe SN, Ferretti P. Bio-electrosprayed human neural stem cells are viable and maintain their differentiation potential. F1000Res 2020; 9:267. [PMID: 32518635 PMCID: PMC7255967 DOI: 10.12688/f1000research.19901.2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/23/2020] [Indexed: 12/17/2022] Open
Abstract
Background: Bio-electrospray (BES) is a jet-based delivery system driven by an electric field that has the ability to form micro to nano-sized droplets. It holds great potential as a tissue engineering tool as it can be used to place cells into specific patterns. As the human central nervous system (CNS) cannot be studied in vivo at the cellular and molecular level, in vitro CNS models are needed. Human neural stem cells (hNSCs) are the CNS building block as they can generate both neurones and glial cells. Methods: Here we assessed for the first time how hNSCs respond to BES. To this purpose, different hNSC lines were sprayed at 10 kV and their ability to survive, grow and differentiate was assessed at different time points. Results: BES induced only a small and transient decrease in hNSC metabolic activity, from which the cells recovered by day 6, and no significant increase in cell death was observed, as assessed by flow cytometry. Furthermore, bio-electrosprayed hNSCs differentiated as efficiently as controls into neurones, astrocytes and oligodendrocytes, as shown by morphological, protein and gene expression analysis. Conclusions: This study highlights the robustness of hNSCs and identifies BES as a suitable technology that could be developed for the direct deposition of these cells in specific locations and configurations.
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Affiliation(s)
- Citlali Helenes González
- Stem Cell and Regenerative Medicine Section, UCL Great Ormond Street Institute of Child Health, University College London, London, WC1N 1EH, UK
| | - Suwan N Jayasinghe
- BioPhysics Group, Department of Mechanical Engineering, University College London, London, WC1E 7JE, UK
| | - Patrizia Ferretti
- Stem Cell and Regenerative Medicine Section, UCL Great Ormond Street Institute of Child Health, University College London, London, WC1N 1EH, UK
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9
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Helenes González C, Jayasinghe SN, Ferretti P. Bio-electrosprayed human neural stem cells are viable and maintain their differentiation potential. F1000Res 2020; 9:267. [PMID: 32518635 PMCID: PMC7255967 DOI: 10.12688/f1000research.19901.1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/02/2020] [Indexed: 03/30/2024] Open
Abstract
Background: Bio-electrospray (BES) is a jet-based delivery system driven by an electric field that has the ability to form micro to nano-sized droplets. It holds great potential as a tissue engineering tool as it can be used to place cells into specific patterns. As the human central nervous system (CNS) cannot be studied in vivo at the cellular and molecular level, in vitro CNS models are needed. Human neural stem cells (hNSCs) are the CNS building block as they can generate both neurones and glial cells. Methods: Here we assessed for the first time how hNSCs respond to BES. To this purpose, different hNSC lines were sprayed at 10 kV and their ability to survive, grow and differentiate was assessed at different time points. Results: BES induced only a small and transient decrease in hNSC metabolic activity, from which cells recovered by day 6, and no significant increase in cell death was observed, as assessed by flow cytometry. Furthermore, bio-electrosprayed hNSCs differentiated as efficiently as controls into neurones, astrocytes and oligodendrocytes as shown by morphological, protein and gene expression analysis. Conclusions: This study highlights the robustness of hNSCs and identifies BES as a suitable technology that could be developed for the direct deposition of these cells in specific locations and configurations.
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Affiliation(s)
- Citlali Helenes González
- Stem Cell and Regenerative Medicine Section, UCL Great Ormond Street Institute of Child Health, University College London, London, WC1N 1EH, UK
| | - Suwan N. Jayasinghe
- BioPhysics Group, Department of Mechanical Engineering, University College London, London, WC1E 7JE, UK
| | - Patrizia Ferretti
- Stem Cell and Regenerative Medicine Section, UCL Great Ormond Street Institute of Child Health, University College London, London, WC1N 1EH, UK
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10
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Dias JR, Ribeiro N, Baptista-Silva S, Costa-Pinto AR, Alves N, Oliveira AL. In situ Enabling Approaches for Tissue Regeneration: Current Challenges and New Developments. Front Bioeng Biotechnol 2020. [PMID: 32133354 DOI: 10.3389/fbioe.2020.00085.] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
In situ tissue regeneration can be defined as the implantation of tissue-specific biomaterials (by itself or in combination with cells and/or biomolecules) at the tissue defect, taking advantage of the surrounding microenvironment as a natural bioreactor. Up to now, the structures used were based on particles or gels. However, with the technological progress, the materials' manipulation and processing has become possible, mimicking the damaged tissue directly at the defect site. This paper presents a comprehensive review of current and advanced in situ strategies for tissue regeneration. Recent advances to put in practice the in situ regeneration concept have been mainly focused on bioinks and bioprinting techniques rather than the combination of different technologies to make the real in situ regeneration. The limitation of conventional approaches (e.g., stem cell recruitment) and their poor ability to mimic native tissue are discussed. Moreover, the way of advanced strategies such as 3D/4D bioprinting and hybrid approaches may contribute to overcome the limitations of conventional strategies are highlighted. Finally, the future trends and main research challenges of in situ enabling approaches are discussed considering in vitro and in vivo evidence.
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Affiliation(s)
- Juliana R Dias
- Centre for Rapid and Sustainable Product Development, Polytechnic Institute of Leiria, Leiria, Portugal
| | - Nilza Ribeiro
- CBQF - Centro de Biotecnologia e Química Fina, Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa1, Porto, Portugal
| | - Sara Baptista-Silva
- CBQF - Centro de Biotecnologia e Química Fina, Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa1, Porto, Portugal
| | - Ana Rita Costa-Pinto
- CBQF - Centro de Biotecnologia e Química Fina, Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa1, Porto, Portugal
| | - Nuno Alves
- Centre for Rapid and Sustainable Product Development, Polytechnic Institute of Leiria, Leiria, Portugal
| | - Ana L Oliveira
- CBQF - Centro de Biotecnologia e Química Fina, Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa1, Porto, Portugal
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11
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Dias JR, Ribeiro N, Baptista-Silva S, Costa-Pinto AR, Alves N, Oliveira AL. In situ Enabling Approaches for Tissue Regeneration: Current Challenges and New Developments. Front Bioeng Biotechnol 2020; 8:85. [PMID: 32133354 PMCID: PMC7039825 DOI: 10.3389/fbioe.2020.00085] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 01/30/2020] [Indexed: 12/15/2022] Open
Abstract
In situ tissue regeneration can be defined as the implantation of tissue-specific biomaterials (by itself or in combination with cells and/or biomolecules) at the tissue defect, taking advantage of the surrounding microenvironment as a natural bioreactor. Up to now, the structures used were based on particles or gels. However, with the technological progress, the materials' manipulation and processing has become possible, mimicking the damaged tissue directly at the defect site. This paper presents a comprehensive review of current and advanced in situ strategies for tissue regeneration. Recent advances to put in practice the in situ regeneration concept have been mainly focused on bioinks and bioprinting techniques rather than the combination of different technologies to make the real in situ regeneration. The limitation of conventional approaches (e.g., stem cell recruitment) and their poor ability to mimic native tissue are discussed. Moreover, the way of advanced strategies such as 3D/4D bioprinting and hybrid approaches may contribute to overcome the limitations of conventional strategies are highlighted. Finally, the future trends and main research challenges of in situ enabling approaches are discussed considering in vitro and in vivo evidence.
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Affiliation(s)
- Juliana R. Dias
- Centre for Rapid and Sustainable Product Development, Polytechnic Institute of Leiria, Leiria, Portugal
| | - Nilza Ribeiro
- CBQF – Centro de Biotecnologia e Química Fina, Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa1, Porto, Portugal
| | - Sara Baptista-Silva
- CBQF – Centro de Biotecnologia e Química Fina, Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa1, Porto, Portugal
| | - Ana Rita Costa-Pinto
- CBQF – Centro de Biotecnologia e Química Fina, Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa1, Porto, Portugal
| | - Nuno Alves
- Centre for Rapid and Sustainable Product Development, Polytechnic Institute of Leiria, Leiria, Portugal
| | - Ana L. Oliveira
- CBQF – Centro de Biotecnologia e Química Fina, Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa1, Porto, Portugal
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Boda SK, Li X, Xie J. Electrospraying an enabling technology for pharmaceutical and biomedical applications: A review. JOURNAL OF AEROSOL SCIENCE 2018; 125:164-181. [PMID: 30662086 PMCID: PMC6333098 DOI: 10.1016/j.jaerosci.2018.04.002] [Citation(s) in RCA: 82] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Electrospraying (ES) is a robust and versatile technique for the fabrication of micro- and nanoparticulate materials of various compositions, morphologies, shapes, textures and sizes. The physics of ES provides a great degree of flexibility towards the materials design of choice with desired physicochemical and biological properties. Not surprising, this technology has become an important tool for the production of micro- and nanostructured materials, especially in the pharmaceutical and biomedical arena. In this review, a basic introduction to the fundamentals of ES along with a brief description of the experimental parameters that can be manipulated to obtain micro- and nanostructured materials of desired composition, size, and configuration are outlined. A greater focus of this review is to bring to light the broad range of electrosprayed materials and their applications in drug delivery, biomedical imaging, implant coating, tissue engineering, and sensing. Taken together, this review will provide an appreciation of this unique technology, which can be used to fabricate micro- and nanostructured materials with tremendous applications in the pharmaceutical and biomedical fields.
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Affiliation(s)
- Sunil Kumar Boda
- Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, College of Medicine, University of Nebraska Medical Center, Omaha, Nebraska 68198, United States
| | - Xiaoran Li
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai 200051, China
| | - Jingwei Xie
- Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, College of Medicine, University of Nebraska Medical Center, Omaha, Nebraska 68198, United States
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Gansau J, Kelly L, Buckley CT. Influence of key processing parameters and seeding density effects of microencapsulated chondrocytes fabricated using electrohydrodynamic spraying. Biofabrication 2018; 10:035011. [PMID: 29888707 DOI: 10.1088/1758-5090/aacb95] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Cell delivery and leakage during injection remains a challenge for cell-based intervertebral disc regeneration strategies. Cellular microencapsulation may offer a promising approach to overcome these limitations by providing a protective niche during intradiscal injection. Electrohydrodynamic spraying (EHDS) is a versatile one-step approach for microencapsulation of cells using a high voltage electric field. The primary objective of this work was to characterise key processing parameters such as applied voltage (0, 5, 10 or 15 kV), emitter needle gauge (21, 26 or 30 G), alginate concentration (1%, 2% or 3%) and flow rate (50, 100, 250 or 500 μl min-1) to regulate the size and morphology of alginate microcapsules as well as subsequent cell viability when altering these parameters. The effect of initial cell seeding density (5, 10 and 20 × 106 cells ml-1) on subsequent matrix accumulation of microencapsulated articular chondrocytes was also evaluated. Results showed that increasing alginate concentration and thus viscosity increased overall microcapsule size but also affected the geometry towards ellipsoidal-shaped gels. Altering the electric field strength and needle diameter regulated microcapsule size towards a smaller diameter with increasing voltage and smaller needle diameter. Needle size did not appear to affect cell viability when operating with lower alginate concentrations (1% and 2%), although higher concentrations (3%) and thus higher viscosity hydrogels resulted in diminished viability with decreasing needle diameter. Increasing cell density resulted in decreased cell viability and a concomitant decrease in DNA content, perhaps due to competing nutrient demands as a result of more closely packed cells. However, higher cell densities resulted in increased levels of extracellular matrix accumulated. Overall, this work highlights the potential of EHDS as a controllable and versatile approach to fabricate microcapsules for injectable delivery which can be used in a variety of applications such as drug development or cell therapies.
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Affiliation(s)
- Jennifer Gansau
- Trinity Centre for Bioengineering, Trinity Biomedical Sciences Institute, Trinity College Dublin, The University of Dublin, Dublin, Ireland. School of Engineering, Trinity College Dublin, The University of Dublin, Dublin, Ireland
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Naqvi SM, Gansau J, Buckley CT. Priming and cryopreservation of microencapsulated marrow stromal cells as a strategy for intervertebral disc regeneration. ACTA ACUST UNITED AC 2018; 13:034106. [PMID: 29380742 DOI: 10.1088/1748-605x/aaab7f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A challenge in using stromal cells for intervertebral disc (IVD) regeneration is their limited differentiation capacity in vivo without exogenous growth factor (GF) supplementation. Priming of stromal cells prior to transplantation may offer a feasible strategy to overcome this limitation. Furthermore, the ability to cryopreserve cells could help alleviate logistical issues associated with storage and transport. With these critical translational challenges in mind, we aimed to develop a strategy involving priming and subsequent cryopreservation of microencapsulated bone marrow stromal cells (BMSCs). In phase one, we utilised the electrohydrodynamic atomisation process to fabricate BMSC-encapsulated microcapsules that were primed with TGF-β3 for 14 d after which they were cultured for a further 21 d under basal or GF supplemented media conditions. Results showed that priming induced differentiation of BMSC microcapsules such that they synthesised significant amounts of sGAG (61.9 ± 2.0 μg and 55.3 ± 6.1 μg for low and high cell densities) and collagen (24.4 ± 1.9 μg and 55.3 ± 4.6 μg for low and high cell densities) in continued culture without GF supplementation compared to Unprimed microcapsules. Phase two of this work assessed the extracellular matrix forming capacity of Primed BMSC microcapsules over 21 d after cryopreservation. Notably, primed and cryopreserved BMSCs successfully retained the ability to synthesise both sGAG (24.8 ± 2.7 μg and 75.1 ± 11.6 μg for low and high cell densities) and collagen (26.4 ± 7.8 μg and 93.1 ± 10.2 μg for low and high cell densities) post-cryopreservation. These findings demonstrate the significant potential of priming and cryopreservation approaches for IVD repair and could possibly open new horizons for pre-designed, 'off-the-shelf' injectable therapeutics.
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Affiliation(s)
- Syeda M Naqvi
- Trinity Centre for Bioengineering, Trinity Biomedical Sciences Institute, Trinity College Dublin, Ireland. School of Engineering, Trinity College Dublin, Ireland
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Xiang P, Wang SS, He M, Han YH, Zhou ZH, Chen DL, Li M, Ma LQ. The in vitro and in vivo biocompatibility evaluation of electrospun recombinant spider silk protein/PCL/gelatin for small caliber vascular tissue engineering scaffolds. Colloids Surf B Biointerfaces 2018; 163:19-28. [DOI: 10.1016/j.colsurfb.2017.12.020] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Revised: 11/25/2017] [Accepted: 12/11/2017] [Indexed: 01/29/2023]
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Qayyum AS, Jain E, Kolar G, Kim Y, Sell SA, Zustiak SP. Design of electrohydrodynamic sprayed polyethylene glycol hydrogel microspheres for cell encapsulation. Biofabrication 2017; 9:025019. [PMID: 28516893 DOI: 10.1088/1758-5090/aa703c] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Electrohydrodynamic spraying (EHS) has recently gained popularity for microencapsulation of cells for applications in cell delivery and tissue engineering. Some of the polymers compatible with EHS are alginate, chitosan, and other similar natural polymers, which are subject to ionotropic or physical gelation. It is desirable to further extend the use of the EHS technique beyond such polymers for wider biofabrication applications. Here, building upon our previous work of making PEG microspheres via EHS, we utilized the principles of EHS to fabricate cell-laden polyethylene glycol (PEG) hydrogel microspheres. The gelation of PEG hydrogel microspheres was achieved by forming covalent crosslinks between multiarm PEG acrylate and dithiol crosslinkers via Michael-type addition. We conducted a detailed investigation of the critical parameters of EHS, such as the applied voltage, inner needle diameter (i.d. needle), and flow rate, to obtain PEG microspheres with high cell viability and tightly-controlled diameters in the range of 70-300 μm. The polydispersity of cell-laden PEG hydrogel microspheres as measured by % coefficient of variation was between 6% and 23% for all conditions tested. We established that our method was compatible with different cell types and that all tested cell types could be encapsulated at high densities of 106-109 and ≥90% encapsulation efficiency. We observed cell aggregation within the hydrogel microspheres at applied voltage >5 kV. Since PEG is a synthetic polymer devoid of cell attachment sites, we could overcome this limitation by tethering Arg-Gly-Asp-Ser (RGDS) peptide to the PEG hydrogel microspheres; upon RGDS tethering, we observed uniform cell dispersion. The microencapsulated cells could be cultured in the PEG hydrogel microspheres of different sizes for up to one week without significant loss in cell viability. In conclusion, the EHS technique developed here could be used to generate cell-laden PEG hydrogel microspheres of controlled sizes for potential applications in cell delivery and organoid cultures.
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Affiliation(s)
- Anisa S Qayyum
- Department of Biomedical Engineering, Saint Louis University, Saint Louis, MO, United States of America
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Braghirolli DI, Helfer VE, Chagastelles PC, Dalberto TP, Gamba D, Pranke P. Electrospun scaffolds functionalized with heparin and vascular endothelial growth factor increase the proliferation of endothelial progenitor cells. Biomed Mater 2017; 12:025003. [DOI: 10.1088/1748-605x/aa5bbc] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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18
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Xin S, Zeng Z, Zhou X, Luo W, Shi X, Wang Q, Deng H, Du Y. Recyclable Saccharomyces cerevisiae loaded nanofibrous mats with sandwich structure constructing via bio-electrospraying for heavy metal removal. JOURNAL OF HAZARDOUS MATERIALS 2017; 324:365-372. [PMID: 27847250 DOI: 10.1016/j.jhazmat.2016.10.070] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Revised: 10/24/2016] [Accepted: 10/29/2016] [Indexed: 06/06/2023]
Abstract
Biosorbents, such as algae and yeast, have been applied in heavy metal adsorption due to their low cost and efficacy. However, they cannot be recycled and reused after direct application, which may cause a secondary pollution. In this study, we used bio-electrospraying technique to immobilize Saccharomyces cerevisiae (a byproduct from food fermentation) onto the surface of poly(ε-caprolactone)/chitosan/rectorite ternary composites based nanofibrous mats. This technique not only combined the advantages of both S. cerevisiae (cheap) and nanofibers (large surface area) in heavy metal removal, but also made biosorbents easy to recollect and reuse. Layer-by-layer structured nanofibrous mats were also fabricated by alternating electrospinning and bio-electrospraying for a couple of times and loaded more S. cerevisiae for enhancing heavy metal biosorption. The morphology of S. cerevisiae loaded nanofibrous mats with different numbers of layers was observed. Biosorption assay was performed on PbNO3 solution under different pH values, contact time, initial concentrations of Pb2+ and biosorbents weights, at last the elemental composition was measured before and after biosorption. The results showed that S. cerevisiae loaded nanofibrous mats had a biosorption capacity of Pb2+ up to 238mg/g. Desorption assay indicated that these mats were reusable and maintained high biosorption capacity after three biosorption-desorption cycles.
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Affiliation(s)
- Shangjing Xin
- Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Hubei Key Lab. of Biomass Resource Chemistry and Environmental Biotechnology, School of Resource and Environmental Science, Wuhan University, Wuhan 430079, China; Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Zhaoyang Zeng
- Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Hubei Key Lab. of Biomass Resource Chemistry and Environmental Biotechnology, School of Resource and Environmental Science, Wuhan University, Wuhan 430079, China
| | - Xue Zhou
- School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Wenjing Luo
- Department of Occupational & Environmental Health, School of Public Health, Fourth Military Medical University, Xi'an 710032, China
| | - Xiaowen Shi
- Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Hubei Key Lab. of Biomass Resource Chemistry and Environmental Biotechnology, School of Resource and Environmental Science, Wuhan University, Wuhan 430079, China
| | - Qun Wang
- Department of Chemical and Biological Engineering, Iowa State University, Ames, IA 50014, USA
| | - Hongbing Deng
- Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Hubei Key Lab. of Biomass Resource Chemistry and Environmental Biotechnology, School of Resource and Environmental Science, Wuhan University, Wuhan 430079, China.
| | - Yumin Du
- Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Hubei Key Lab. of Biomass Resource Chemistry and Environmental Biotechnology, School of Resource and Environmental Science, Wuhan University, Wuhan 430079, China
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Kim SY, Burgess JK, Wang Y, Kable EP, Weiss DJ, Chan HK, Chrzanowski W. Atomized Human Amniotic Mesenchymal Stromal Cells for Direct Delivery to the Airway for Treatment of Lung Injury. J Aerosol Med Pulm Drug Deliv 2016; 29:514-524. [DOI: 10.1089/jamp.2016.1289] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Affiliation(s)
- Sally Yunsun Kim
- Faculty of Pharmacy, The University of Sydney, Sydney, Australia
| | - Janette K. Burgess
- Department Pathology and Medical Biology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
- Respiratory Cellular and Molecular Biology, Woolcock Institute of Medical Research, The University of Sydney, Sydney, Australia
- Discipline of Pharmacology, The University of Sydney, Sydney, Australia
| | - Yiwei Wang
- ANZAC Research Institute, The University of Sydney, Concord, Australia
| | - Eleanor P.W. Kable
- Australian Centre for Microscopy & Microanalysis, The University of Sydney, Sydney, Australia
| | - Daniel J. Weiss
- College of Medicine, University of Vermont College of Medicine, Burlington, Vermont
| | - Hak-Kim Chan
- Faculty of Pharmacy, The University of Sydney, Sydney, Australia
| | - Wojciech Chrzanowski
- Faculty of Pharmacy, The University of Sydney, Sydney, Australia
- Australian Institute of Nanoscale Science and Technology, The University of Sydney, Sydney, NSW 2006, Australia
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20
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Pharmaceutical Applications of Electrospraying. J Pharm Sci 2016; 105:2601-2620. [DOI: 10.1016/j.xphs.2016.04.024] [Citation(s) in RCA: 105] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2016] [Revised: 04/14/2016] [Accepted: 04/22/2016] [Indexed: 02/01/2023]
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21
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Naqvi SM, Vedicherla S, Gansau J, McIntyre T, Doherty M, Buckley CT. Living Cell Factories - Electrosprayed Microcapsules and Microcarriers for Minimally Invasive Delivery. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:5662-5671. [PMID: 26695531 DOI: 10.1002/adma.201503598] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Revised: 10/01/2015] [Indexed: 06/05/2023]
Abstract
Minimally invasive delivery of "living cell factories" consisting of cells and therapeutic agents has gained wide attention for next generation biomaterial device systems for multiple applications including musculoskeletal tissue regeneration, diabetes and cancer. Cellular-based microcapsules and microcarrier systems offer several attractive features for this particular purpose. One such technology capable of generating these types of systems is electrohydrodynamic (EHD) spraying. Depending on various parameters, including applied voltage, biomaterial properties (viscosity, conductivity) and needle geometry, complex structures and arrangements can be fabricated for therapeutic strategies. The advances in the use of EHD technology are outlined, specifically in the manipulation of bioactive and dynamic material systems to control size, composition and configuration in the development of minimally invasive micro-scaled biopolymeric systems. The exciting therapeutic applications of this technology, future perspectives and associated challenges are also presented.
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Affiliation(s)
- Syeda M Naqvi
- Trinity Center for Bioengineering, Trinity Biomedical Sciences Institute, Trinity College Dublin, Ireland
- Department of Mechanical Engineering, School of Engineering, Trinity College Dublin, Ireland
| | - Srujana Vedicherla
- Trinity Center for Bioengineering, Trinity Biomedical Sciences Institute, Trinity College Dublin, Ireland
- School of Medicine, Trinity College Dublin, Ireland
| | - Jennifer Gansau
- Trinity Center for Bioengineering, Trinity Biomedical Sciences Institute, Trinity College Dublin, Ireland
- Department of Mechanical Engineering, School of Engineering, Trinity College Dublin, Ireland
| | - Tom McIntyre
- Trinity Center for Bioengineering, Trinity Biomedical Sciences Institute, Trinity College Dublin, Ireland
- School of Medicine, Trinity College Dublin, Ireland
| | - Michelle Doherty
- Trinity Center for Bioengineering, Trinity Biomedical Sciences Institute, Trinity College Dublin, Ireland
| | - Conor T Buckley
- Trinity Center for Bioengineering, Trinity Biomedical Sciences Institute, Trinity College Dublin, Ireland
- Department of Mechanical Engineering, School of Engineering, Trinity College Dublin, Ireland
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22
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Chang L, Hu J, Chen F, Chen Z, Shi J, Yang Z, Li Y, Lee LJ. Nanoscale bio-platforms for living cell interrogation: current status and future perspectives. NANOSCALE 2016; 8:3181-3206. [PMID: 26745513 DOI: 10.1039/c5nr06694h] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The living cell is a complex entity that dynamically responds to both intracellular and extracellular environments. Extensive efforts have been devoted to the understanding intracellular functions orchestrated with mRNAs and proteins in investigation of the fate of a single-cell, including proliferation, apoptosis, motility, differentiation and mutations. The rapid development of modern cellular analysis techniques (e.g. PCR, western blotting, immunochemistry, etc.) offers new opportunities in quantitative analysis of RNA/protein expression up to a single cell level. The recent entries of nanoscale platforms that include kinds of methodologies with high spatial and temporal resolution have been widely employed to probe the living cells. In this tutorial review paper, we give insight into background introduction and technical innovation of currently reported nanoscale platforms for living cell interrogation. These highlighted technologies are documented in details within four categories, including nano-biosensors for label-free detection of living cells, nanodevices for living cell probing by intracellular marker delivery, high-throughput platforms towards clinical current, and the progress of microscopic imaging platforms for cell/tissue tracking in vitro and in vivo. Perspectives for system improvement were also discussed to solve the limitations remains in current techniques, for the purpose of clinical use in future.
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Affiliation(s)
- Lingqian Chang
- NSF Nanoscale Science and Engineering Center (NSEC), The Ohio State University, Columbus, OH 43212, USA.
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23
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Alhasan L, Qi A, Rezk AR, Yeo LY, Chan PPY. Assessment of the potential of a high frequency acoustomicrofluidic nebulisation platform for inhaled stem cell therapy. Integr Biol (Camb) 2016; 8:12-20. [DOI: 10.1039/c5ib00206k] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
This study demonstrates the use of a novel high frequency acoustic nebulisation platform as an effective aerosolisation technique for inhaled mesenchymal stem cell (MSC) therapy.
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Affiliation(s)
- Layla Alhasan
- Department of Biotechnology & Biological Science
- RMIT University
- Melbourne
- Australia
- Micro/Nanophysics Research Laboratory
| | - Aisha Qi
- Micro/Nanophysics Research Laboratory
- RMIT University
- Melbourne
- Australia
| | - Amgad R. Rezk
- Micro/Nanophysics Research Laboratory
- RMIT University
- Melbourne
- Australia
| | - Leslie Y. Yeo
- Micro/Nanophysics Research Laboratory
- RMIT University
- Melbourne
- Australia
| | - Peggy P. Y. Chan
- Micro/Nanophysics Research Laboratory
- RMIT University
- Melbourne
- Australia
- Department of Biomedical Engineering
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Braghirolli DI, Zamboni F, Acasigua GAX, Pranke P. Association of electrospinning with electrospraying: a strategy to produce 3D scaffolds with incorporated stem cells for use in tissue engineering. Int J Nanomedicine 2015; 10:5159-69. [PMID: 26316747 PMCID: PMC4542624 DOI: 10.2147/ijn.s84312] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
In tissue engineering, a uniform cell occupation of scaffolds is crucial to ensure the success of tissue regeneration. However, this point remains an unsolved problem in 3D scaffolds. In this study, a direct method to integrate cells into fiber scaffolds was investigated by combining the methods of electrospinning of fibers and bioelectrospraying of cells. With the associating of these methods, the cells were incorporated into the 3D scaffolds while the fibers were being produced. The scaffolds containing cells (SCCs) were produced using 20% poly(lactide-co-glycolide) solution for electrospinning and mesenchymal stem cells from deciduous teeth as a suspension for bioelectrospraying. After their production, the SCCs were cultivated for 15 days at 37°C with an atmosphere of 5% CO2. The 3-(4,5-dimethylthiazol- 2-yl)-2,5-diphenyltetrazolium bromide test demonstrated that the cells remained viable and were able to grow between the fibers. Scanning electron microscopy showed the presence of a high number of cells in the structure of the scaffolds and confocal images demonstrated that the cells were able to adapt and spread between the fibers. Histological analysis of the SCCs after 1 day of cultivation showed that the cells were uniformly distributed throughout the thickness of the scaffolds. Some physicochemical properties of the scaffolds were also investigated. SCCs exhibited good mechanical properties, compatible with their handling and further implantation. The results obtained in the present study suggest that the association of electrospinning and bioelectrospraying provides an interesting tool for forming 3D cell-integrated scaffolds, making it a viable alternative for use in tissue engineering.
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Affiliation(s)
- Daikelly Iglesias Braghirolli
- Hematology and Stem Cells Laboratory, Faculty of Pharmacy, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil ; Department of Materials Science, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Fernanda Zamboni
- Hematology and Stem Cells Laboratory, Faculty of Pharmacy, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Gerson A X Acasigua
- Hematology and Stem Cells Laboratory, Faculty of Pharmacy, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil ; School of Dentistry, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Patricia Pranke
- Hematology and Stem Cells Laboratory, Faculty of Pharmacy, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil ; Department of Materials Science, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil ; Instituto de Pesquisas com Células-Tronco, Porto Alegre, Rio Grande do Sul, Brazil
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25
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Lei Q, Chen J, Huang W, Wu D, Lin H, Lai Y. Proteomic analysis of the effect of extracellular calcium ions on human mesenchymal stem cells: Implications for bone tissue engineering. Chem Biol Interact 2015; 233:139-46. [PMID: 25824407 DOI: 10.1016/j.cbi.2015.03.021] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2014] [Revised: 01/29/2015] [Accepted: 03/19/2015] [Indexed: 12/16/2022]
Abstract
Human mesenchymal stem cells-bone marrow (BM-hMSCs) are considered as the most suitable seed cells for bone tissue engineering. Calcium ions (Ca(2+)) forms an important component of a number of commercial bone substitutes and support materials. For efficient bone tissue engineering, it is crucial to explore the effect of extracellular Ca(2+) on the growth and differentiation of BM-hMSCs, and to understand their molecular mechanisms. Therefore, in the present study, BM-hMSCs were cultivated in serum free growth medium or serum free growth medium with additional 4 or 6mM Ca(2+) for 3weeks, following which, the proliferation and osteoblastic differentiation of these cells were evaluated. Differentially expressed proteins were established using iTRAQ labeling coupled with nano-LC-MS/MS. Our data revealed that Ca(2+) significantly promoted the proliferation of BM-hMSCs in the early stage. Furthermore, Ca(2+) showed osteoinduction properties. MAPKs signaling pathway might participate in the osteogenic differentiation of BM-hMSCs caused by Ca(2+). Certain newly found proteins could be potentially important for the osteogenic differentiation of BM-hMSCs and may be associated with osteogenesis.
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Affiliation(s)
- Qun Lei
- Department of Oral Implantology, Affiliated Stomatological Hospital of Fujian Medical University, Fuzhou, Fujian 350002, China
| | - Jiang Chen
- Department of Oral Implantology, Affiliated Stomatological Hospital of Fujian Medical University, Fuzhou, Fujian 350002, China
| | - Wenxiu Huang
- Department of Oral Implantology, Affiliated Stomatological Hospital of Fujian Medical University, Fuzhou, Fujian 350002, China
| | - Dong Wu
- Department of Oral Implantology, Affiliated Stomatological Hospital of Fujian Medical University, Fuzhou, Fujian 350002, China.
| | - Hengzhang Lin
- Department of Stomatology, Affiliated Provincial Governmental Hospital of Fujian Health College, Fuzhou, Fujian 350002, China
| | - Yingzhen Lai
- Department of Stomatology, Xiamen Medical College, Xiamen, Fujian 361008, China
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26
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Xie J, Jiang J, Davoodi P, Srinivasan MP, Wang CH. Electrohydrodynamic atomization: A two-decade effort to produce and process micro-/nanoparticulate materials. Chem Eng Sci 2015; 125:32-57. [PMID: 25684778 PMCID: PMC4322784 DOI: 10.1016/j.ces.2014.08.061] [Citation(s) in RCA: 150] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Electrohydrodynamic atomization (EHDA), also called electrospray technique, has been studied for more than one century. However, since 1990s it has begun to be used to produce and process micro-/nanostructured materials. Owing to the simplicity and flexibility in EHDA experimental setup, it has been successfully employed to generate particulate materials with controllable compositions, structures, sizes, morphologies, and shapes. EHDA has also been used to deposit micro- and nanoparticulate materials on surfaces in a well-controlled manner. All these attributes make EHDA a fascinating tool for preparing and assembling a wide range of micro- and nanostructured materials which have been exploited for use in pharmaceutics, food, and healthcare to name a few. Our goal is to review this field, which allows scientists and engineers to learn about the EHDA technique and how it might be used to create, process, and assemble micro-/nanoparticulate materials with unique and intriguing properties. We begin with a brief introduction to the mechanism and setup of EHDA technique. We then discuss issues critical to successful application of EHDA technique, including control of composition, size, shape, morphology, structure of particulate materials and their assembly. We also illustrate a few of the many potential applications of particulate materials, especially in the area of drug delivery and regenerative medicine. Next, we review the simulation and modeling of Taylor cone-jet formation for a single and co-axial nozzle. The mathematical modeling of particle transport and deposition is presented to provide a deeper understanding of the effective parameters in the preparation, collection and pattering processes. We conclude this article with a discussion on perspectives and future possibilities in this field.
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Affiliation(s)
- Jingwei Xie
- Department of Pharmaceutical Sciences and Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, Nebraska 68198, United States
| | - Jiang Jiang
- Department of Pharmaceutical Sciences and Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, Nebraska 68198, United States
| | - Pooya Davoodi
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, 117585
| | - M. P. Srinivasan
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, 117585
| | - Chi-Hwa Wang
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, 117585
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Bansal R, Jain A, Mittal S. Current overview on challenges in regenerative endodontics. J Conserv Dent 2015; 18:1-6. [PMID: 25657518 PMCID: PMC4313471 DOI: 10.4103/0972-0707.148861] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Revised: 09/29/2014] [Accepted: 10/23/2014] [Indexed: 11/04/2022] Open
Abstract
INTRODUCTION Regenerative endodontics provides hope of converting the non-vital tooth into vital once again. It focuses on substituting traumatized and pathological pulp with functional pulp tissue. Current regenerative procedures successfully produce root development but still fail to re-establish real pulp tissue and give unpredictable results. There are several drawbacks that need to be addressed to improve the quality and efficiency of the treatment. AIM The aim of this review article is to discuss major priorities that ought to be dealt before applications of regenerative endodontics flourish the clinical practice. MATERIALS AND METHODS A web-based research on MEDLINE was done using filter terms Review, published in the last 10 years and Dental journals. Keywords used for research were "regenerative endodontics," "dental stem cells," "growth factor regeneration," "scaffolds," and "challenges in regeneration." This review article screened about 150 articles and then the relevant information was compiled. RESULTS Inspite of the impressive growth in regenerative endodontic field, there are certain loopholes in the existing treatment protocols that might sometimes result in undesired and unpredictable outcomes. CONCLUSION Considerable research and development efforts are required to improve and update existing regenerative endodontic strategies to make it an effective, safe, and biological mode to save teeth.
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Affiliation(s)
- Ramta Bansal
- Department of Conservative Dentistry and Endodontics, Institute of Dental Sciences, Sehora, Jammu and Kashmir, India
| | - Aditya Jain
- Department of Physiology, Government Medical College, Patiala, India
| | - Sunandan Mittal
- Department of Conservative Dentistry and Endodontics, Dasmesh Institute of Research and Dental Sciences, Faridkot, Punjab, India
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Atashi F, Jaconi MEE, Pittet-Cuénod B, Modarressi A. Autologous platelet-rich plasma: a biological supplement to enhance adipose-derived mesenchymal stem cell expansion. Tissue Eng Part C Methods 2014; 21:253-62. [PMID: 25025830 DOI: 10.1089/ten.tec.2014.0206] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Currently the use of non-autologous cell culture media (e.g., animal-derived or allogeneic serum) for clinical applications of mesenchymal stem cells (MSCs) is criticized by regulatory agencies. Autologous platelet-rich plasma (PRP) is proposed as a safer alternative medium supplement for adipose-derived mesenchymal stem cells (AT-MSC) culture. To study its efficiency on cell proliferation, AT-MSCs were cultured for 10 days in media supplemented with different concentrations of autologous non-activated PRP (nPRP) or thrombin-activated PRP (tPRP) (1-60%). AT-MSC proliferation, cell phenotype, multipotency capacity, and chromosome stability were assessed and compared to AT-MSCs expanded in a classical medium supplemented with 10% of fetal bovine serum (FBS). Culture media supplemented with nPRP showed dose-dependent higher AT-MSC proliferation than did FBS or tPRP. Twenty percent nPRP was the most effective concentration to promote cell proliferation. This condition increased 13.9 times greater AT-MSC number in comparison to culture with FBS, without changing the AT-MSC phenotype, differentiation capacity, and chromosome status. We concluded that 20% autologous nPRP is a safe, efficient, and cost-effective supplement for AT-MSC expansion. It should be considered as an alternative to FBS or other nonautologous blood derivatives. It could serve as a potent substitute for the validation of future clinical protocols as it respects good manufacturing practices and regulatory agencies' standards.
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Affiliation(s)
- Fatemeh Atashi
- 1 Department of Plastic, Reconstructive and Aesthetic Surgery, University Hospitals of Geneva (HUG) , Faculty of Medicine, Geneva University, Geneva, Switzerland
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Workman VL, Tezera LB, Elkington PT, Jayasinghe SN. Controlled Generation of Microspheres Incorporating Extracellular Matrix Fibrils for Three-Dimensional Cell Culture. ADVANCED FUNCTIONAL MATERIALS 2014; 24:2648-2657. [PMID: 25411575 PMCID: PMC4233144 DOI: 10.1002/adfm.201303891] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
A growing body of evidence suggests that studying cell biology in classical two-dimensional formats, such as cell culture plasticware, results in misleading, non-physiological findings. For example, some aspects of cancer biology cannot be observed in 2D, but require 3D culture methods to recapitulate observations in vivo. Therefore, we developed a microsphere-based model to permit 3D cell culture incorporating physiological extracellular matrix components. Bio-electrospraying was chosen as it is the most advanced method to produce microspheres, with THP-1 cells as a model cell line. Bio-electrospraying parameters, such as nozzle size, polymer flow rate, and voltage, were systematically optimized to allow stable production of size controlled microspheres containing extracellular matrix material and human cells. We investigated the effect of bio-electrospraying parameters, alginate type and cell concentration on cell viability using trypan blue and propidium iodide staining. Bio-electrospraying had no effect on cell viability nor the ability of cells to proliferate. Cell viability was similarly minimally affected by encapsulation in all types of alginate tested (MVM, MVG, chemical- and food-grade). Cell density of 5 × 106 cells ml-1 within microspheres was the optimum for cell survival and proliferation. The stable generation of microspheres incorporating cells and extracellular matrix for use in a 3D cell culture will benefit study of many diverse diseases and permit investigation of cellular biology within a 3D matrix.
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Affiliation(s)
- Victoria L. Workman
- BioPhysics Group, UCL Institute of Biomedical Engineering, UCL Centre for Stem Cells and Regenerative Medicine and Department of Mechanical Engineering, University College London, Torrington Place, London, WC1E 7JE, United Kingdom
| | - Liku B. Tezera
- Clinical and Experimental Sciences, Institute for Life Sciences, Faculty of Medicine, University of Southampton, Southampton, SO16 6YD, United Kingdom
| | - Paul T. Elkington
- Clinical and Experimental Sciences, Institute for Life Sciences, Faculty of Medicine, University of Southampton, Southampton, SO16 6YD, United Kingdom
| | - Suwan N. Jayasinghe
- BioPhysics Group, UCL Institute of Biomedical Engineering, UCL Centre for Stem Cells and Regenerative Medicine and Department of Mechanical Engineering, University College London, Torrington Place, London, WC1E 7JE, United Kingdom
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