1
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Nizamoglu M, Burgess JK. Current possibilities and future opportunities provided by three-dimensional lung ECM-derived hydrogels. Front Pharmacol 2023; 14:1154193. [PMID: 36969853 PMCID: PMC10034771 DOI: 10.3389/fphar.2023.1154193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Accepted: 02/28/2023] [Indexed: 03/11/2023] Open
Abstract
Disruption of the complex interplay between cells and extracellular matrix (ECM), the scaffold that provides support, biochemical and biomechanical cues, is emerging as a key element underlying lung diseases. We readily acknowledge that the lung is a flexible, relatively soft tissue that is three dimensional (3D) in structure, hence a need exists to develop in vitro model systems that reflect these properties. Lung ECM-derived hydrogels have recently emerged as a model system that mimics native lung physiology; they contain most of the plethora of biochemical components in native lung, as well as reflecting the biomechanics of native tissue. Research investigating the contribution of cell:matrix interactions to acute and chronic lung diseases has begun adopting these models but has yet to harness their full potential. This perspective article provides insight about the latest advances in the development, modification, characterization and utilization of lung ECM-derived hydrogels. We highlight some opportunities for expanding research incorporating lung ECM-derived hydrogels and potential improvements for the current approaches. Expanding the capabilities of investigations using lung ECM-derived hydrogels is positioned at a cross roads of disciplines, the path to new and innovative strategies for unravelling disease underlying mechanisms will benefit greatly from interdisciplinary approaches. While challenges need to be addressed before the maximum potential can be unlocked, with the rapid pace at which this field is evolving, we are close to a future where faster, more efficient and safer drug development targeting the disrupted 3D microenvironment is possible using lung ECM-derived hydrogels.
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Affiliation(s)
- Mehmet Nizamoglu
- University of Groningen, University Medical Center Groningen, Department of Pathology and Medical Biology, Groningen, Netherlands
- University of Groningen, University Medical Center Groningen, Groningen Research Institute for Asthma and COPD (GRIAC), Groningen, Netherlands
| | - Janette K. Burgess
- University of Groningen, University Medical Center Groningen, Department of Pathology and Medical Biology, Groningen, Netherlands
- University of Groningen, University Medical Center Groningen, Groningen Research Institute for Asthma and COPD (GRIAC), Groningen, Netherlands
- University of Groningen, University Medical Center Groningen, W.J. Kolff Institute for Biomedical Engineering and Materials Science-FB41, Groningen, Netherlands
- *Correspondence: Janette K. Burgess,
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2
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Moreira A, Müller M, Costa PF, Kohl Y. Advanced In Vitro Lung Models for Drug and Toxicity Screening: The Promising Role of Induced Pluripotent Stem Cells. Adv Biol (Weinh) 2021; 6:e2101139. [PMID: 34962104 DOI: 10.1002/adbi.202101139] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 11/25/2021] [Indexed: 12/24/2022]
Abstract
The substantial socioeconomic burden of lung diseases, recently highlighted by the disastrous impact of the coronavirus disease 2019 (COVID-19) pandemic, accentuates the need for interventive treatments capable of decelerating disease progression, limiting organ damage, and contributing to a functional tissue recovery. However, this is hampered by the lack of accurate human lung research models, which currently fail to reproduce the human pulmonary architecture and biochemical environment. Induced pluripotent stem cells (iPSCs) and organ-on-chip (OOC) technologies possess suitable characteristics for the generation of physiologically relevant in vitro lung models, allowing for developmental studies, disease modeling, and toxicological screening. Importantly, these platforms represent potential alternatives for animal testing, according to the 3Rs (replace, reduce, refine) principle, and hold promise for the identification and approval of new chemicals under the European REACH (registration, evaluation, authorization and restriction of chemicals) framework. As such, this review aims to summarize recent progress made in human iPSC- and OOC-based in vitro lung models. A general overview of the present applications of in vitro lung models is presented, followed by a summary of currently used protocols to generate different lung cell types from iPSCs. Lastly, recently developed iPSC-based lung models are discussed.
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Affiliation(s)
| | - Michelle Müller
- Department of Bioprocessing and Bioanalytics, Fraunhofer Institute for Biomedical Engineering IBMT, Joseph-von-Fraunhofer-Weg 1, 66280, Sulzbach, Germany
| | - Pedro F Costa
- BIOFABICS, Rua Alfredo Allen 455, Porto, 4200-135, Portugal
| | - Yvonne Kohl
- Department of Bioprocessing and Bioanalytics, Fraunhofer Institute for Biomedical Engineering IBMT, Joseph-von-Fraunhofer-Weg 1, 66280, Sulzbach, Germany.,Postgraduate Course for Toxicology and Environmental Toxicology, Medical Faculty, University of Leipzig, Johannisallee 28, 04103, Leipzig, Germany
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3
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Williams AH, Hebert AM, Boehm RC, Huddleston ME, Jenkins MR, Velev OD, Nelson MT. Bioscaffold Stiffness Mediates Aerosolized Nanoparticle Uptake in Lung Epithelial Cells. ACS APPLIED MATERIALS & INTERFACES 2021; 13:50643-50656. [PMID: 34668373 DOI: 10.1021/acsami.1c09701] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
In this study, highly porous, ultrasoft polymeric mats mimicking human tissues were formed from novel polyurethane soft dendritic colloids (PU SDCs). PU SDCs have a unique fibrillar morphology controlled by antisolvent precipitation. When filtered from suspension, PU SDCs form mechanically robust nonwoven mats. The stiffness of the SDC mats can be tuned for physiological relevance. The unique physiochemical characteristics of the PU SDC particles dictate the mechanical properties resulting in tunable elastic moduli ranging from 200 to 800 kPa. The human lung A549 cells cultured on both stiff and soft PU SDC membranes were found to be viable, capable of supporting the air-liquid interface (ALI) cell culture, and maintained barrier integrity. Furthermore, A549 cellular viability and uptake efficiency of aerosolized tannic acid-coated gold nanoparticles (Ta-Au) was found to depend on elastic modulus and culture conditions. Ta-Au nanoparticle uptake was twofold and fourfold greater on soft PU SDCs, when cultured at submerged and ALI conditions, respectively. The significant increase in endocytosed Ta-Au resulted in a 20% decrease in viability, and a 4-fold increase in IL-8 cytokine secretion when cultured on soft PU SDCs at ALI. Common tissue culture materials exhibit super-physiological elastic moduli, a factor found to be critical in analyzing nanomaterial cellular interactions and biological responses.
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Affiliation(s)
- Austin H Williams
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Adrien M Hebert
- Air Force Research Laboratory, 711th Human Performance Wing, Wright-Patterson AFB, Ohio 45433, United States
| | - Robert C Boehm
- Air Force Research Laboratory, 711th Human Performance Wing, Wright-Patterson AFB, Ohio 45433, United States
| | - Mary E Huddleston
- Air Force Research Laboratory, 711th Human Performance Wing, Wright-Patterson AFB, Ohio 45433, United States
- UES, Inc., Dayton, Ohio 45432, United States
| | - Meghan R Jenkins
- Air Force Research Laboratory, 711th Human Performance Wing, Wright-Patterson AFB, Ohio 45433, United States
- UES, Inc., Dayton, Ohio 45432, United States
| | - Orlin D Velev
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - M Tyler Nelson
- Air Force Research Laboratory, 711th Human Performance Wing, Wright-Patterson AFB, Ohio 45433, United States
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4
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Moysidou CM, Barberio C, Owens RM. Advances in Engineering Human Tissue Models. Front Bioeng Biotechnol 2021; 8:620962. [PMID: 33585419 PMCID: PMC7877542 DOI: 10.3389/fbioe.2020.620962] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Accepted: 12/22/2020] [Indexed: 12/11/2022] Open
Abstract
Research in cell biology greatly relies on cell-based in vitro assays and models that facilitate the investigation and understanding of specific biological events and processes under different conditions. The quality of such experimental models and particularly the level at which they represent cell behavior in the native tissue, is of critical importance for our understanding of cell interactions within tissues and organs. Conventionally, in vitro models are based on experimental manipulation of mammalian cells, grown as monolayers on flat, two-dimensional (2D) substrates. Despite the amazing progress and discoveries achieved with flat biology models, our ability to translate biological insights has been limited, since the 2D environment does not reflect the physiological behavior of cells in real tissues. Advances in 3D cell biology and engineering have led to the development of a new generation of cell culture formats that can better recapitulate the in vivo microenvironment, allowing us to examine cells and their interactions in a more biomimetic context. Modern biomedical research has at its disposal novel technological approaches that promote development of more sophisticated and robust tissue engineering in vitro models, including scaffold- or hydrogel-based formats, organotypic cultures, and organs-on-chips. Even though such systems are necessarily simplified to capture a particular range of physiology, their ability to model specific processes of human biology is greatly valued for their potential to close the gap between conventional animal studies and human (patho-) physiology. Here, we review recent advances in 3D biomimetic cultures, focusing on the technological bricks available to develop more physiologically relevant in vitro models of human tissues. By highlighting applications and examples of several physiological and disease models, we identify the limitations and challenges which the field needs to address in order to more effectively incorporate synthetic biomimetic culture platforms into biomedical research.
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Affiliation(s)
| | | | - Róisín Meabh Owens
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, United Kingdom
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5
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Hu Q, Su C, Zeng Z, Zhang H, Feng R, Feng J, Li S. Fabrication of multilayer tubular scaffolds with aligned nanofibers to guide the growth of endothelial cells. J Biomater Appl 2020; 35:553-566. [DOI: 10.1177/0885328220935090] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Aligned electrospun fibers used for the fabrication of tubular scaffolds possess the ability to regulate cellular alignment and relevant functional expression, with applications in tissue engineering. Despite significant progress in the fabrication of small-diameter vascular grafts (SDVGs) over the past decade, several challenges remain; one of the most problematic of these is the fabrication of aligned nanofibers for multilayer SDVGs. Furthermore, delamination between each layer is difficult to avoid during the fabrication of multilayer structures. This study introduces a new fabrication method for minute delamination four-layer tubular scaffolds (FLTSs) that consist of an interior layer with highly longitudinal aligned nanofibers, two middle layers composed of electrospun sloped and circumferentially aligned fibers, and an exterior layer comprising random fibers. These FLTSs are used to simulate the structures and functions of native blood vessels. Here, thermoplastic polyurethane (TPU)/polycaprolactone (PCL)/polyethylene glycol (PEG) were electrospun to fabricate FLTSs or tubular scaffolds with completely random fibers layer (RLTSs). The surface wettability of the TPU/PCL/PEG tubular scaffold was tested by water contact angle analysis. In particular, compared with RLTSs, FLTSs showed excellent mechanical properties, with higher circumferential and longitudinal tensile properties. Furthermore, the high viability of the human umbilical vein endothelial cells (HUVECs) on the FLTSs indicated the biocompatibility of the tubular scaffolds comparing to RLTSs. The aligned and random composite structure of the FLTSs are conducive to promoting the growth of HUVECs, and the cell adhesion and proliferation on these scaffolds was found to be superior to that on RLTSs. These results demonstrate that the fabricated FLTSs have the potential for application in vascular tissue regeneration and clinical arterial replacements.
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Affiliation(s)
- Qingxi Hu
- Rapid Manufacturing Engineering Center, School of Mechatronic Engineering and Automation, Shanghai University, Shanghai, China
- Shanghai Key Laboratory of Intelligent Manufacturing and Robotics, Shanghai University, Shanghai, China
| | - Caiping Su
- Rapid Manufacturing Engineering Center, School of Mechatronic Engineering and Automation, Shanghai University, Shanghai, China
| | - Zhaoxiang Zeng
- National Demonstration Center for Experimental Engineering Training Education, Shanghai University, Shanghai, China
| | - Haiguang Zhang
- Rapid Manufacturing Engineering Center, School of Mechatronic Engineering and Automation, Shanghai University, Shanghai, China
- Shanghai Key Laboratory of Intelligent Manufacturing and Robotics, Shanghai University, Shanghai, China
| | - Rui Feng
- National Demonstration Center for Experimental Engineering Training Education, Shanghai University, Shanghai, China
| | - Jiaxuan Feng
- National Demonstration Center for Experimental Engineering Training Education, Shanghai University, Shanghai, China
| | - Shuai Li
- Rapid Manufacturing Engineering Center, School of Mechatronic Engineering and Automation, Shanghai University, Shanghai, China
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6
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Rashid M, Dudhia J, Dakin SG, Snelling SJB, De Godoy R, Mouthuy PA, Smith RKW, Morrey M, Carr AJ. Histopathological and immunohistochemical evaluation of cellular response to a woven and electrospun polydioxanone (PDO) and polycaprolactone (PCL) patch for tendon repair. Sci Rep 2020; 10:4754. [PMID: 32179829 PMCID: PMC7076042 DOI: 10.1038/s41598-020-61725-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Accepted: 03/02/2020] [Indexed: 01/25/2023] Open
Abstract
We investigated endogenous tissue response to a woven and electrospun polydioxanone (PDO) and polycaprolactone (PCL) patch intended for tendon repair. A sheep tendon injury model characterised by a natural history of consistent failure of healing was chosen to assess the biological potential of woven and aligned electrospun fibres to induce a reparative response. Patches were implanted into 8 female adult English Mule sheep. Significant infiltration of tendon fibroblasts was observed within the electrospun component of the patch but not within the woven component. The cellular infiltrate into the electrospun fibres was accompanied by an extensive network of new blood vessel formation. Tendon fibroblasts were the most abundant scaffold-populating cell type. CD45+, CD4+ and CD14+ cells were also present, with few foreign body giant cells. There were no local or systemic signs of excessive inflammation with normal hematology and serology for inflammatory markers three months after scaffold implantation. In conclusion, we demonstrate that an endogenous healing response can be safely induced in tendon by means of biophysical cues using a woven and electrospun patch.
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Affiliation(s)
- Mustafa Rashid
- Nuffield Department of Orthopaedics, Rheumatology, and Musculoskeletal Sciences (NDORMS), University of Oxford, Oxford, UK.,NIHR Biomedical Research Centre, Oxford, UK
| | - Jayesh Dudhia
- Department of Clinical Sciences and Services, Royal Veterinary College, University of London, North Mymms, UK
| | - Stephanie G Dakin
- Nuffield Department of Orthopaedics, Rheumatology, and Musculoskeletal Sciences (NDORMS), University of Oxford, Oxford, UK.,NIHR Biomedical Research Centre, Oxford, UK
| | - Sarah J B Snelling
- Nuffield Department of Orthopaedics, Rheumatology, and Musculoskeletal Sciences (NDORMS), University of Oxford, Oxford, UK.,NIHR Biomedical Research Centre, Oxford, UK
| | - Roberta De Godoy
- Department of Clinical Sciences and Services, Royal Veterinary College, University of London, North Mymms, UK
| | - Pierre-Alexis Mouthuy
- Nuffield Department of Orthopaedics, Rheumatology, and Musculoskeletal Sciences (NDORMS), University of Oxford, Oxford, UK.,NIHR Biomedical Research Centre, Oxford, UK
| | - Roger K W Smith
- Department of Clinical Sciences and Services, Royal Veterinary College, University of London, North Mymms, UK
| | - Mark Morrey
- Nuffield Department of Orthopaedics, Rheumatology, and Musculoskeletal Sciences (NDORMS), University of Oxford, Oxford, UK.,NIHR Biomedical Research Centre, Oxford, UK.,Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Andrew J Carr
- Nuffield Department of Orthopaedics, Rheumatology, and Musculoskeletal Sciences (NDORMS), University of Oxford, Oxford, UK. .,NIHR Biomedical Research Centre, Oxford, UK.
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7
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Patient JD, Hajiali H, Harris K, Abrahamsson B, Tannergren C, White LJ, Ghaemmaghami AM, Williams PM, Roberts CJ, Rose FRAJ. Nanofibrous Scaffolds Support a 3D in vitro Permeability Model of the Human Intestinal Epithelium. Front Pharmacol 2019; 10:456. [PMID: 31133850 PMCID: PMC6524416 DOI: 10.3389/fphar.2019.00456] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Accepted: 04/11/2019] [Indexed: 12/20/2022] Open
Abstract
Advances in drug research not only depend on high throughput screening to evaluate large numbers of lead compounds but also on the development of in vitro models which can simulate human tissues in terms of drug permeability and functions. Potential failures, such as poor permeability or interaction with efflux drug transporters, can be identified in epithelial Caco-2 monolayer models and can impact a drug candidate's progression onto the next stages of the drug development process. Whilst monolayer models demonstrate reasonably good prediction of in vivo permeability for some compounds, more developed in vitro tools are needed to assess new entities that enable closer in vivo in vitro correlation. In this study, an in vitro model of the human intestinal epithelium was developed by utilizing nanofibers, fabricated using electrospinning, to mimic the structure of the basement membrane. We assessed Caco-2 cell response to these materials and investigated the physiological properties of these cells cultured on the fibrous supports, focusing on barrier integrity and drug-permeability properties. The obtained data illustrate that 2D Caco-2 Transwell® cultures exhibit artificially high trans-epithelial electrical resistance (TEER) compared to cells cultured on the 3D nanofibrous scaffolds which show TEER values similar to ex vivo porcine tissue (also measured in this study). Furthermore, our results demonstrate that the 3D nanofibrous scaffolds influence the barrier integrity of the Caco-2 monolayer to confer drug-absorption properties that more closely mimic native gut tissue particularly for studying passive epithelial transport. We propose that this 3D model is a suitable in vitro model for investigating drug absorption and intestinal metabolism.
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Affiliation(s)
- Jamie D. Patient
- School of Pharmacy, University of Nottingham, Nottingham, United Kingdom
| | - Hadi Hajiali
- School of Pharmacy, University of Nottingham, Nottingham, United Kingdom
| | | | | | | | - Lisa J. White
- School of Pharmacy, University of Nottingham, Nottingham, United Kingdom
| | - Amir M. Ghaemmaghami
- School of Life Sciences, Queen’s Medical Centre, University of Nottingham, Nottingham, United Kingdom
| | - Philip M. Williams
- School of Pharmacy, University of Nottingham, Nottingham, United Kingdom
| | - Clive J. Roberts
- School of Pharmacy, University of Nottingham, Nottingham, United Kingdom
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8
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Woods I, Black A, Jockenhoevel S, Flanagan TC. Harnessing topographical & biochemical cues to enhance elastogenesis by paediatric cells for cardiovascular tissue engineering applications. Biochem Biophys Res Commun 2019; 512:156-162. [PMID: 30878185 DOI: 10.1016/j.bbrc.2019.03.026] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Accepted: 03/05/2019] [Indexed: 01/01/2023]
Abstract
The development of tissue-engineered vascular grafts (TEVGs) with a biomimetic extracellular matrix (ECM) structure, including a mature elastic network, remains a key challenge for the production of grafts with long-term functionality. The aim of this study was to investigate the influence of aligned nanofiber substrates on ECM protein synthesis by neonatal smooth muscle cells (SMCs), and to examine the combined effects of this topographical cue in conjunction with transforming growth factor beta-1 (TGF-β1) - a biochemical elastogenic promoter. Glass coverslips were coated in electrospun fibrinogen nanofibers (average diameter < 500 nm) with either a randomly-orientated or aligned topography. Human umbilical artery smooth muscle cells (hUASMCs) were cultured on the electrospun substrates for 7 and 14 days, with or without a 2 ng/ml TGF-β1 supplement. The ECM structure was analysed using immunohistochemistry and the quantity of secreted elastin in the cell layer was measured using a dye-binding assay. Aligned fiber substrates induced a directed orientation of both the seeded cells and cell-synthesized ECM fibers. Cells cultured on aligned fibers exhibited a significant increase in the expression of phenotypic contractile proteins, as well as increases in the secreted elastin content of the cell layer, compared to cells cultured on randomly-orientated substrates. TGF-β1 supplementation was shown to synergistically increase secreted elastin from cells cultured on aligned fiber substrates (p < 0.05). Aligned nanofiber scaffolds can be used to direct cellular orientation, elastin-related protein synthesis and cell phenotype, and consequently there is potential for their application in the development of TEVGs as part of a multi-pronged strategy to promote elastic fiber formation.
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Affiliation(s)
- Ian Woods
- School of Medicine, University College Dublin, Dublin, Ireland; National Children's Research Centre (NCRC), Our Lady's Childrens' Hospital Crumlin (OLCHC), Dublin, Ireland
| | - Alexander Black
- Anatomy, School of Medicine, National University of Ireland, Galway, Ireland
| | - Stefan Jockenhoevel
- Helmholtz Institute for Biomedical Engineering, RWTH Aachen University, Aachen, Germany
| | - Thomas C Flanagan
- School of Medicine, University College Dublin, Dublin, Ireland; National Children's Research Centre (NCRC), Our Lady's Childrens' Hospital Crumlin (OLCHC), Dublin, Ireland.
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9
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Cyclic stretch enhances reorientation and differentiation of 3-D culture model of human airway smooth muscle. Biochem Biophys Rep 2018; 16:32-38. [PMID: 30258989 PMCID: PMC6153119 DOI: 10.1016/j.bbrep.2018.09.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 09/06/2018] [Accepted: 09/11/2018] [Indexed: 02/06/2023] Open
Abstract
Activation of airway smooth muscle (ASM) cells plays a central role in the pathophysiology of asthma. Because ASM is an important therapeutic target in asthma, it is beneficial to develop bioengineered ASM models available for assessing physiological and biophysical properties of ASM cells. In the physiological condition in vivo, ASM cells are surrounded by extracellular matrix (ECM) and exposed to mechanical stresses such as cyclic stretch. We utilized a 3-D culture model of human ASM cells embedded in type-I collagen gel. We further examined the effects of cyclic mechanical stretch, which mimics tidal breathing, on cell orientation and expression of contractile proteins of ASM cells within the 3-D gel. ASM cells in type-I collagen exhibited a tissue-like structure with actin stress fiber formation and intracellular Ca2+ mobilization in response to methacholine. Uniaxial cyclic stretching enhanced alignment of nuclei and actin stress fibers of ASM cells. Moreover, expression of mRNAs for contractile proteins such as α-smooth muscle actin, calponin, myosin heavy chain 11, and transgelin of stretched ASM cells was significantly higher than that under the static condition. Our findings suggest that mechanical force and interaction with ECM affects development of the ASM tissue-like construct and differentiation to the contractile phenotype in a 3-D culture model.
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10
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Bridge JC, Amer M, Morris GE, Martin NRW, Player DJ, Knox AJ, Aylott JW, Lewis MP, Rose FRAJ. Electrospun gelatin-based scaffolds as a novel 3D platform to study the function of contractile smooth muscle cells
in vitro. Biomed Phys Eng Express 2018. [DOI: 10.1088/2057-1976/aace8f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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11
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Young BM, Shankar K, Allen BP, Pouliot RA, Schneck MB, Mikhaiel NS, Heise RL. Electrospun Decellularized Lung Matrix Scaffold for Airway Smooth Muscle Culture. ACS Biomater Sci Eng 2017; 3:3480-3492. [DOI: 10.1021/acsbiomaterials.7b00384] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Bethany M. Young
- Department
of Biomedical Engineering, Virginia Commonwealth University, 800 E. Leigh
Street, Room 1071, Richmond, Virginia 23219, United States
| | - Keerthana Shankar
- Department
of Biomedical Engineering, Virginia Commonwealth University, 800 E. Leigh
Street, Room 1071, Richmond, Virginia 23219, United States
| | - Brittany P. Allen
- Department
of Biomedical Engineering, Virginia Commonwealth University, 800 E. Leigh
Street, Room 1071, Richmond, Virginia 23219, United States
| | - Robert A. Pouliot
- Department
of Biomedical Engineering, Virginia Commonwealth University, 800 E. Leigh
Street, Room 1071, Richmond, Virginia 23219, United States
| | - Matthew B. Schneck
- Department
of Biomedical Engineering, Virginia Commonwealth University, 800 E. Leigh
Street, Room 1071, Richmond, Virginia 23219, United States
| | - Nabil S. Mikhaiel
- Department
of Biomedical Engineering, Virginia Commonwealth University, 800 E. Leigh
Street, Room 1071, Richmond, Virginia 23219, United States
| | - Rebecca L. Heise
- Department
of Biomedical Engineering, Virginia Commonwealth University, 800 E. Leigh
Street, Room 1071, Richmond, Virginia 23219, United States
- Department
of Physiology and Biophysics, Virginia Commonwealth University School of Medicine, 1101 East Marshall Street, Richmond, Virginia 23298, United States
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12
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Ruiter FAA, Alexander C, Rose FRAJ, Segal JI. A design of experiments approach to identify the influencing parameters that determine poly-D,L-lactic acid (PDLLA) electrospun scaffold morphologies. ACTA ACUST UNITED AC 2017. [PMID: 28643700 DOI: 10.1088/1748-605x/aa7b54] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Electrospun fibrous materials have increasing applications in regenerative medicine due to the similarity of fibre constructs to the morphology of certain extracellular matrices. Although experimentally the electrospinning method is relatively simple, at the theoretical level the interactions between process parameters and their influence on the fibre morphology is not yet fully understood. Here, we hypothesised that a design of experiments (DoE) model could determine combinations of process parameters that result in significant effects on poly-D,L-lactic acid (PDLLA) fibre morphology. The process parameters used in this study were applied voltage, needle-to-collector distance, flow rate and polymer concentration. Data obtained for mean fibre diameter, standard deviation (SD) of the fibre diameter (measure of fibre morphology) and presence of 'beading' on the fibres (beads per μm2) were evaluated as a measure of PDLLA fibre morphology. Uniform fibres occurred at SDs of ≤500 nm, 'beads-on-string' morphologies were apparent between ±500 and 1300 nm and large beads were observed at ±1300-1800 nm respectively. Mean fibre diameter was significantly influenced by the applied voltage and interaction between flow rate and polymer concentration. Fibre morphology was mainly influenced by the polymer concentration, while bead distribution was significantly influenced by the polymer concentration as well as the flow rate. The resultant DoE model regression equations were tested and considered suitable for the prediction of parameters combinations needed for desired PDLLA fibre diameter and additionally provided information regarding the expected fibre morphology.
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Affiliation(s)
- F A A Ruiter
- School of Pharmacy, University of Nottingham, Nottingham, NG7 2RD, United Kingdom
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13
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Barnes PJ, Bonini S, Seeger W, Belvisi MG, Ward B, Holmes A. Barriers to new drug development in respiratory disease. Eur Respir J 2016; 45:1197-207. [PMID: 25931481 DOI: 10.1183/09031936.00007915] [Citation(s) in RCA: 82] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Peter J Barnes
- Airways Disease Section, National Heart and Lung Institute, Imperial College London, London, UK
| | - Sergio Bonini
- Second University of Naples, Caserta, Italy Institute of Translational Pharmacology-CNR, Rome, Italy European Medicines Agency, London, UK
| | - Werner Seeger
- University of Giessen and Marburg Lung Centre, Member of the German Centre for Lung Research (DZL), Giessen, Germany
| | - Maria G Belvisi
- Airways Disease Section, National Heart and Lung Institute, Imperial College London, London, UK
| | - Brian Ward
- European Affairs Dept, European Respiratory Society, Brussels, Belgium
| | - Anthony Holmes
- National Centre for the Replacement, Refinement and Reduction of Animals in Research (NC3Rs), London, UK
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14
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Prakash YS, Tschumperlin DJ, Stenmark KR. Coming to terms with tissue engineering and regenerative medicine in the lung. Am J Physiol Lung Cell Mol Physiol 2015; 309:L625-38. [PMID: 26254424 DOI: 10.1152/ajplung.00204.2015] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Accepted: 08/04/2015] [Indexed: 01/10/2023] Open
Abstract
Lung diseases such as emphysema, interstitial fibrosis, and pulmonary vascular diseases cause significant morbidity and mortality, but despite substantial mechanistic understanding, clinical management options for them are limited, with lung transplantation being implemented at end stages. However, limited donor lung availability, graft rejection, and long-term problems after transplantation are major hurdles to lung transplantation being a panacea. Bioengineering the lung is an exciting and emerging solution that has the ultimate aim of generating lung tissues and organs for transplantation. In this article we capture and review the current state of the art in lung bioengineering, from the multimodal approaches, to creating anatomically appropriate lung scaffolds that can be recellularized to eventually yield functioning, transplant-ready lungs. Strategies for decellularizing mammalian lungs to create scaffolds with native extracellular matrix components vs. de novo generation of scaffolds using biocompatible materials are discussed. Strengths vs. limitations of recellularization using different cell types of various pluripotency such as embryonic, mesenchymal, and induced pluripotent stem cells are highlighted. Current hurdles to guide future research toward achieving the clinical goal of transplantation of a bioengineered lung are discussed.
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Affiliation(s)
- Y S Prakash
- Department of Anesthesiology, Mayo Clinic, Rochester, Minnesota; Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota;
| | - Daniel J Tschumperlin
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota; Division of Pulmonary Medicine, Mayo Clinic, Rochester, Minnesota; and
| | - Kurt R Stenmark
- Department of Pediatrics, University of Colorado, Aurora, Colorado
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15
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Bridge JC, Aylott JW, Brightling CE, Ghaemmaghami AM, Knox AJ, Lewis MP, Rose FRAJ, Morris GE. Adapting the Electrospinning Process to Provide Three Unique Environments for a Tri-layered In Vitro Model of the Airway Wall. J Vis Exp 2015:e52986. [PMID: 26275100 PMCID: PMC4544510 DOI: 10.3791/52986] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Electrospinning is a highly adaptable method producing porous 3D fibrous scaffolds that can be exploited in in vitro cell culture. Alterations to intrinsic parameters within the process allow a high degree of control over scaffold characteristics including fiber diameter, alignment and porosity. By developing scaffolds with similar dimensions and topographies to organ- or tissue-specific extracellular matrices (ECM), micro-environments representative to those that cells are exposed to in situ can be created. The airway bronchiole wall, comprised of three main micro-environments, was selected as a model tissue. Using decellularized airway ECM as a guide, we electrospun the non-degradable polymer, polyethylene terephthalate (PET), by three different protocols to produce three individual electrospun scaffolds optimized for epithelial, fibroblast or smooth muscle cell-culture. Using a commercially available bioreactor system, we stably co-cultured the three cell-types to provide an in vitro model of the airway wall over an extended time period. This model highlights the potential for such methods being employed in in vitro diagnostic studies investigating important inter-cellular cross-talk mechanisms or assessing novel pharmaceutical targets, by providing a relevant platform to allow the culture of fully differentiated adult cells within 3D, tissue-specific environments.
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Affiliation(s)
- Jack C Bridge
- Division of Drug Delivery and Tissue Engineering, University of Nottingham
| | - Jonathan W Aylott
- Laboratory of Biophysics and Surface Analysis, School of Pharmacy, University of Nottingham
| | | | - Amir M Ghaemmaghami
- Division of Immunology and Allergy, School of Molecular Medical Sciences, University of Nottingham
| | - Alan J Knox
- Division of Respiratory Medicine, School of Clinical Sciences, University of Nottingham
| | - Mark P Lewis
- School of Sport, Exercise, and Health Sciences, Loughborough University
| | | | - Gavin E Morris
- Division of Drug Delivery and Tissue Engineering, University of Nottingham;
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16
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Othman R, E Morris G, Shah DA, Hall S, Hall G, Wells K, Shakesheff KM, Dixon JE. An automated fabrication strategy to create patterned tubular architectures at cell and tissue scales. Biofabrication 2015; 7:025003. [DOI: 10.1088/1758-5090/7/2/025003] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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