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Aikman EL, Rao AP, Jia Y, Fussell EE, Trumbull KE, Sampath J, Stoppel WL. Impact of crystalline domains on long-term stability and mechanical performance of anisotropic silk fibroin sponges. J Biomed Mater Res A 2024; 112:1451-1471. [PMID: 38469675 DOI: 10.1002/jbm.a.37703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 02/20/2024] [Accepted: 02/26/2024] [Indexed: 03/13/2024]
Abstract
Sponge-like materials made from regenerated silk fibroin biopolymers are a tunable and advantageous platform for in vitro engineered tissue culture and in vivo tissue regeneration. Anisotropic, three-dimensional (3D) silk fibroin sponge-like scaffolds can mimic the architecture of contractile muscle. Herein, we use silk fibroin solution isolated from the cocoons of Bombyx mori silkworms to form aligned sponges via directional ice templating in a custom mold with a slurry of dry ice and ethanol. Hydrated tensile mechanical properties of these aligned sponges were evaluated as a function of silk polymer concentration (3% or 5%), freezing time (50% or 100% ethanol), and post-lyophilization method for inducing crystallinity (autoclaving, water annealing). Hydrated static tensile tests were used to determine Young's modulus and ultimate tensile strength across sponge formulations at two strain rates to evaluate rate dependence in the calculated parameters. Results aligned with previous reports in the literature for isotropic silk fibroin sponge-like scaffolds, where the method by which beta-sheets were formed and level of beta-sheet content (crystallinity) had the greatest impact on static parameters, while polymer concentration and freezing rate did not significantly impact static mechanical properties. We estimated the crystalline organization using molecular dynamics simulations to show that larger crystalline regions may be responsible for strength at low strain amplitudes and brittleness at high strain amplitudes in the autoclaved sponges. Within the parameters evaluated, extensional Young's modulus is tunable in the range of 600-2800 kPa. Dynamic tensile testing revealed the linear viscoelastic region to be between 0% and 10% strain amplitude and 0.2-2 Hz frequencies. Long-term stability was evaluated by hysteresis and fatigue tests. Fatigue tests showed minimal change in the storage and loss modulus of 5% silk fibroin sponges for more than 6000 min of continuous mechanical stimulation in the linear regime at 10% strain amplitude and 1 Hz frequency. Furthermore, we confirmed that these mechanical properties hold when decellularized extracellular matrix is added to the sponges and when the mechanical property assessments were performed in cell culture media. We also used nano-computed tomography (nano-CT) and simulations to explore pore interconnectivity and tortuosity. Overall, these results highlight the potential of anisotropic, sponge-like silk fibroin scaffolds for long-term (>6 weeks) contractile muscle culture with an in vitro bioreactor system that provides routine mechanical stimulation.
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Affiliation(s)
- Elizabeth L Aikman
- Department of Chemical Engineering, University of Florida, Gainesville, Florida, USA
| | - Asha P Rao
- Department of Chemical Engineering, University of Florida, Gainesville, Florida, USA
| | - Yinhao Jia
- Department of Chemical Engineering, University of Florida, Gainesville, Florida, USA
| | - Emily E Fussell
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, Florida, USA
| | - Kayleigh E Trumbull
- Department of Chemical Engineering, University of Florida, Gainesville, Florida, USA
| | - Janani Sampath
- Department of Chemical Engineering, University of Florida, Gainesville, Florida, USA
| | - Whitney L Stoppel
- Department of Chemical Engineering, University of Florida, Gainesville, Florida, USA
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, Florida, USA
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2
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Tan YH, Habing KM, Riesterer JL, Stempinksi ES, Lewis SH, Pfeifer CS, Malhotra SV, Nakayama KH. Engineered Nanofibrillar Collagen with Tunable Biophysical Properties for Myogenic, Endothelial, and Osteogenic Cell Guidance. Acta Biomater 2024:S1742-7061(24)00444-6. [PMID: 39117115 DOI: 10.1016/j.actbio.2024.08.002] [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: 04/15/2024] [Revised: 07/10/2024] [Accepted: 08/01/2024] [Indexed: 08/10/2024]
Abstract
A goal of regenerative engineering is the rational design of materials to restore the structure-function relationships that drive reparative programs in damaged tissues. Despite the widespread use of extracellular matrices for engineering tissues, their application has been limited by a narrow range of tunable features. The primary objective of this study is to develop a versatile platform for evaluating tissue-specific cellular interactions using Type I collagen scaffolds with highly tunable biophysical properties. The kinetics of collagen fibrillogenesis were modulated through a combination of varied shear rate and pH, during neutralization, to achieve a broad range of fibril anisotropy, porosity, diameter, and storage modulus. The role that each of these properties play in guiding muscle, bone, and vascular cell types was comprehensively identified and informed the in vitro generation of three distinct musculoskeletal engineered constructs. Myogenesis was highly regulated by smaller fibrils and larger storage moduli, endothelial inflammatory phenotype was predominantly guided by fibril anisotropy, and osteogenesis was enhanced by highly porous collagen with larger fibrils. This study introduces a novel approach for dynamically modulating Type I collagen materials and provides a robust platform for investigating cell-material interactions, offering insights for future rational design of tissue-specific regenerative biomaterials. STATEMENT OF SIGNIFICANCE: The biophysical properties of regenerative materials facilitate key cell-substrate interactions that can guide the morphology, phenotype, and biological response of cells. In this study, we describe the fabrication of an engineered collagen hydrogel that can be modified to exhibit control over a wide range of biophysical features including fibril organization and size, nanoscale porosity, and mechanics. We identified the unique combination of collagen features that optimally promote regenerative muscle, bone, and vascular cell types while also delineating the properties that hinder these same cellular responses. This study presents a highly accessible method to control the biophysical properties of collagen hydrogels that can be adapted for a broad range of tissue engineering and regenerative applications.
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Affiliation(s)
- Yong How Tan
- Department of Biomedical Engineering, Oregon Health & Science University, Portland OR
| | - Krista M Habing
- Department of Biomedical Engineering, Oregon Health & Science University, Portland OR
| | - Jessica L Riesterer
- Cancer Early Detection Advanced Research Center, Oregon Health & Science University, Portland OR
| | - Erin S Stempinksi
- Multiscale Microscopy Core, Oregon Health & Science University, Portland OR
| | - Steven H Lewis
- Biomaterial and Biomedical Sciences, Oregon Health & Science University, Portland OR
| | - Carmem S Pfeifer
- Biomaterial and Biomedical Sciences, Oregon Health & Science University, Portland OR
| | - Sanjay V Malhotra
- Department of Cell, Developmental and Cancer Biology, Oregon Health & Science University, Portland OR
| | - Karina H Nakayama
- Department of Biomedical Engineering, Oregon Health & Science University, Portland OR; Department of Orthopaedics and Rehabilitation, Oregon Health & Science University, Portland, OR.
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3
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Kwon J, Eom S, Kong JS, Cho DW, Kim DS, Kim J. Engineered Regenerative Isolated Peripheral Nerve Interface for Targeted Reinnervation. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024:e2406652. [PMID: 39051516 DOI: 10.1002/adma.202406652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2024] [Revised: 06/24/2024] [Indexed: 07/27/2024]
Abstract
A regenerative peripheral nerve interface (RPNI) offers a therapeutic solution for nerve injury through reconstruction of the target muscle. However, implanting a transected peripheral nerve into an autologous skeletal muscle graft in RPNI causes donor-site morbidity, highlighting the need for tissue-engineered skeletal muscle constructs. Here, an engineered regenerative isolated peripheral nerve interface (eRIPEN) is developed using 3D skeletal cell printing combined with direct electrospinning to create a nanofiber membrane envelop for host nerve implantation. In this in vivo study, after over 8 months of RPNI surgery, the eRIPEN exhibits a minimum Feret diameter of 15-20 µm with a cross-sectional area of 100-500 µm2, representing the largest distribution of myofibers. Furthermore, neuromuscular junction formation and muscle contraction with a force of ≈28 N are observed. Notably, the decreased hypersensitivity to mechanical/thermal stimuli and an improved tibial functional index from -77 to -56 are found in the eRIPEN group. The present novel concept of eRIPEN paves the way for the utilization and application of tissue-engineered constructs in RPNI, ultimately realizing neuroprosthesis control through synaptic connections.
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Affiliation(s)
- Jinju Kwon
- Department of Health Science, Graduate School, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea
- Transdisciplinary Major in Learning Health Systems, Department of Healthcare Sciences, Graduate School, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea
| | - Seongsu Eom
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk, 37673, Republic of Korea
| | - Jeong Sik Kong
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk, 37673, Republic of Korea
- POSTECH-Catholic Biomedical Engineering Institute, POSTECH, Pohang, Gyeongbuk, 37673, Republic of Korea
| | - Dong-Woo Cho
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk, 37673, Republic of Korea
- POSTECH-Catholic Biomedical Engineering Institute, POSTECH, Pohang, Gyeongbuk, 37673, Republic of Korea
| | - Dong Sung Kim
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk, 37673, Republic of Korea
- School of Interdisciplinary Bioscience and Bioengineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk, 37673, Republic of Korea
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk, 37673, Republic of Korea
- Institute for Convergence Research and Education in Advanced Technology, Yonsei University, 50, Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Junesun Kim
- Department of Health Science, Graduate School, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea
- Department of Health and Environmental Science, Undergraduate School, College of Health Science, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea
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Dreher SI, Grubba P, von Toerne C, Moruzzi A, Maurer J, Goj T, Birkenfeld AL, Peter A, Loskill P, Hauck SM, Weigert C. IGF1 promotes human myotube differentiation toward a mature metabolic and contractile phenotype. Am J Physiol Cell Physiol 2024; 326:C1462-C1481. [PMID: 38690930 DOI: 10.1152/ajpcell.00654.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 02/26/2024] [Accepted: 02/26/2024] [Indexed: 05/03/2024]
Abstract
Skeletal muscle mediates the beneficial effects of exercise, thereby improving insulin sensitivity and reducing the risk for type 2 diabetes. Current human skeletal muscle models in vitro are incapable of fully recapitulating its physiological functions especially muscle contractility. By supplementation of insulin-like growth factor 1 (IGF1), a growth factor secreted by myofibers in vivo, we aimed to overcome these limitations. We monitored the differentiation process starting from primary human CD56-positive myoblasts in the presence/absence of IGF1 in serum-free medium in daily collected samples for 10 days. IGF1-supported differentiation formed thicker multinucleated myotubes showing physiological contraction upon electrical pulse stimulation (EPS) following day 6. Myotubes without IGF1 were almost incapable of contraction. IGF1 treatment shifted the proteome toward skeletal muscle-specific proteins that contribute to myofibril and sarcomere assembly, striated muscle contraction, and ATP production. Elevated PPARGC1A, MYH7, and reduced MYH1/2 suggest a more oxidative phenotype further demonstrated by higher abundance of proteins of the respiratory chain and elevated mitochondrial respiration. IGF1-treatment also upregulated glucose transporter (GLUT)4 and increased insulin-dependent glucose uptake compared with myotubes differentiated without IGF1. To conclude, addition of IGF1 to serum-free medium significantly improves the differentiation of human myotubes that showed enhanced myofibril formation, response to electrical pulse stimulation, oxidative respiratory capacity, and glucose metabolism overcoming limitations of previous standards. This novel protocol enables investigation of muscular exercise on a molecular level.NEW & NOTEWORTHY Human skeletal muscle models are highly valuable to study how exercise prevents type 2 diabetes without invasive biopsies. Current models did not fully recapitulate the function of skeletal muscle especially during exercise. By supplementing insulin-like growth factor 1 (IGF1), the authors developed a functional human skeletal muscle model characterized by inducible contractility and increased oxidative and insulin-sensitive metabolism. The novel protocol overcomes the limitations of previous standards and enables investigation of exercise on a molecular level.
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Affiliation(s)
- Simon I Dreher
- Department for Diagnostic Laboratory Medicine, Institute for Clinical Chemistry and Pathobiochemistry, University Hospital Tübingen, Tübingen, Germany
| | - Paul Grubba
- Department for Diagnostic Laboratory Medicine, Institute for Clinical Chemistry and Pathobiochemistry, University Hospital Tübingen, Tübingen, Germany
| | - Christine von Toerne
- Metabolomics and Proteomics Core Helmholtz Center Munich, German Research Center for Environmental Health, Neuherberg, Germany
| | - Alessia Moruzzi
- NMI Natural and Medical Sciences Institute at the University of Tübingen, Reutlingen, Germany
- Department for Microphysiological Systems, Institute of Biomedical Engineering, Faculty of Medicine, Eberhard Karls University Tübingen, Tübingen, Germany
| | - Jennifer Maurer
- Department for Diagnostic Laboratory Medicine, Institute for Clinical Chemistry and Pathobiochemistry, University Hospital Tübingen, Tübingen, Germany
| | - Thomas Goj
- Department for Diagnostic Laboratory Medicine, Institute for Clinical Chemistry and Pathobiochemistry, University Hospital Tübingen, Tübingen, Germany
- German Center for Diabetes Research (DZD), Neuherberg, Germany
| | - Andreas L Birkenfeld
- German Center for Diabetes Research (DZD), Neuherberg, Germany
- Institute for Diabetes Research and Metabolic Diseases of the Helmholtz Zentrum München, University of Tübingen, Tübingen, Germany
- Department of Internal Medicine IV, University Hospital Tübingen, Tübingen, Germany
| | - Andreas Peter
- Department for Diagnostic Laboratory Medicine, Institute for Clinical Chemistry and Pathobiochemistry, University Hospital Tübingen, Tübingen, Germany
- German Center for Diabetes Research (DZD), Neuherberg, Germany
- Institute for Diabetes Research and Metabolic Diseases of the Helmholtz Zentrum München, University of Tübingen, Tübingen, Germany
| | - Peter Loskill
- NMI Natural and Medical Sciences Institute at the University of Tübingen, Reutlingen, Germany
- Department for Microphysiological Systems, Institute of Biomedical Engineering, Faculty of Medicine, Eberhard Karls University Tübingen, Tübingen, Germany
| | - Stefanie M Hauck
- Metabolomics and Proteomics Core Helmholtz Center Munich, German Research Center for Environmental Health, Neuherberg, Germany
- German Center for Diabetes Research (DZD), Neuherberg, Germany
| | - Cora Weigert
- Department for Diagnostic Laboratory Medicine, Institute for Clinical Chemistry and Pathobiochemistry, University Hospital Tübingen, Tübingen, Germany
- German Center for Diabetes Research (DZD), Neuherberg, Germany
- Institute for Diabetes Research and Metabolic Diseases of the Helmholtz Zentrum München, University of Tübingen, Tübingen, Germany
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5
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Tejedera-Villafranca A, Montolio M, Ramón-Azcón J, Fernández-Costa JM. Mimicking sarcolemmal damage in vitro: a contractile 3D model of skeletal muscle for drug testing in Duchenne muscular dystrophy. Biofabrication 2023; 15:045024. [PMID: 37725998 DOI: 10.1088/1758-5090/acfb3d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Accepted: 09/19/2023] [Indexed: 09/21/2023]
Abstract
Duchenne muscular dystrophy (DMD) is the most prevalent neuromuscular disease diagnosed in childhood. It is a progressive and wasting disease, characterized by a degeneration of skeletal and cardiac muscles caused by the lack of dystrophin protein. The absence of this crucial structural protein leads to sarcolemmal fragility, resulting in muscle fiber damage during contraction. Despite ongoing efforts, there is no cure available for DMD patients. One of the primary challenges is the limited efficacy of current preclinical tools, which fail in modeling the biological complexity of the disease. Human-based three-dimensional (3D) cell culture methods appear as a novel approach to accelerate preclinical research by enhancing the reproduction of pathophysiological processes in skeletal muscle. In this work, we developed a patient-derived functional 3D skeletal muscle model of DMD that reproduces the sarcolemmal damage found in the native DMD muscle. These bioengineered skeletal muscle tissues exhibit contractile functionality, as they responded to electrical pulse stimulation. Sustained contractile regimes induced the loss of myotube integrity, mirroring the pathological myotube breakdown inherent in DMD due to sarcolemmal instability. Moreover, damaged DMD tissues showed disease functional phenotypes, such as tetanic fatigue. We also evaluated the therapeutic effect of utrophin upregulator drug candidates on the functionality of the skeletal muscle tissues, thus providing deeper insight into the real impact of these treatments. Overall, our findings underscore the potential of bioengineered 3D skeletal muscle technology to advance DMD research and facilitate the development of novel therapies for DMD and related neuromuscular disorders.
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Affiliation(s)
- Ainoa Tejedera-Villafranca
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology (BIST), C/Baldiri Reixac 10-12, E08028 Barcelona, Spain
| | - Marisol Montolio
- Duchenne Parent Project España, E28032 Madrid, Spain
- Department of Cell Biology, Physiology and Immunology, Faculty of Biology, University of Barcelona, E08027 Barcelona, Spain
| | - Javier Ramón-Azcón
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology (BIST), C/Baldiri Reixac 10-12, E08028 Barcelona, Spain
- Institució Catalana de Reserca i Estudis Avançats (ICREA), Passeig de Lluís Companys, 23, E08010 Barcelona, Spain
| | - Juan M Fernández-Costa
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology (BIST), C/Baldiri Reixac 10-12, E08028 Barcelona, Spain
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Hakim Khalili M, Zhang R, Wilson S, Goel S, Impey SA, Aria AI. Additive Manufacturing and Physicomechanical Characteristics of PEGDA Hydrogels: Recent Advances and Perspective for Tissue Engineering. Polymers (Basel) 2023; 15:polym15102341. [PMID: 37242919 DOI: 10.3390/polym15102341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 05/11/2023] [Accepted: 05/12/2023] [Indexed: 05/28/2023] Open
Abstract
In this brief review, we discuss the recent advancements in using poly(ethylene glycol) diacrylate (PEGDA) hydrogels for tissue engineering applications. PEGDA hydrogels are highly attractive in biomedical and biotechnology fields due to their soft and hydrated properties that can replicate living tissues. These hydrogels can be manipulated using light, heat, and cross-linkers to achieve desirable functionalities. Unlike previous reviews that focused solely on material design and fabrication of bioactive hydrogels and their cell viability and interactions with the extracellular matrix (ECM), we compare the traditional bulk photo-crosslinking method with the latest three-dimensional (3D) printing of PEGDA hydrogels. We present detailed evidence combining the physical, chemical, bulk, and localized mechanical characteristics, including their composition, fabrication methods, experimental conditions, and reported mechanical properties of bulk and 3D printed PEGDA hydrogels. Furthermore, we highlight the current state of biomedical applications of 3D PEGDA hydrogels in tissue engineering and organ-on-chip devices over the last 20 years. Finally, we delve into the current obstacles and future possibilities in the field of engineering 3D layer-by-layer (LbL) PEGDA hydrogels for tissue engineering and organ-on-chip devices.
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Affiliation(s)
- Mohammad Hakim Khalili
- Surface Engineering and Precision Centre, School of Aerospace, Transport and Manufacturing, Cranfield University, Bedford MK43 0AL, UK
| | - Rujing Zhang
- Sophion Bioscience A/S, Baltorpvej 154, 2750 Copenhagen, Denmark
| | - Sandra Wilson
- Sophion Bioscience A/S, Baltorpvej 154, 2750 Copenhagen, Denmark
| | - Saurav Goel
- School of Engineering, London South Bank University, 103 Borough Road, London SE1 0AA, UK
- Department of Mechanical Engineering, University of Petroleum and Energy Studies, Dehradun 248007, India
| | - Susan A Impey
- Surface Engineering and Precision Centre, School of Aerospace, Transport and Manufacturing, Cranfield University, Bedford MK43 0AL, UK
| | - Adrianus Indrat Aria
- Surface Engineering and Precision Centre, School of Aerospace, Transport and Manufacturing, Cranfield University, Bedford MK43 0AL, UK
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García-Lizarribar A, Villasante A, Lopez-Martin JA, Flandez M, Soler-Vázquez MC, Serra D, Herrero L, Sagrera A, Efeyan A, Samitier J. 3D bioprinted functional skeletal muscle models have potential applications for studies of muscle wasting in cancer cachexia. BIOMATERIALS ADVANCES 2023; 150:213426. [PMID: 37104961 DOI: 10.1016/j.bioadv.2023.213426] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 04/01/2023] [Accepted: 04/08/2023] [Indexed: 04/29/2023]
Abstract
Acquired muscle diseases such as cancer cachexia are responsible for the poor prognosis of many patients suffering from cancer. In vitro models are needed to study the underlying mechanisms of those pathologies. Extrusion bioprinting is an emerging tool to emulate the aligned architecture of fibers while implementing additive manufacturing techniques in tissue engineering. However, designing bioinks that reconcile the rheological needs of bioprinting and the biological requirements of muscle tissue is a challenging matter. Here we formulate a biomaterial with dual crosslinking to modulate the physical properties of bioprinted models. We design 3D bioprinted muscle models that resemble the mechanical properties of native tissue and show improved proliferation and high maturation of differentiated myotubes suggesting that the GelMA-AlgMA-Fibrin biomaterial possesses myogenic properties. The electrical stimulation of the 3D model confirmed the contractile capability of the tissue and enhanced the formation of sarcomeres. Regarding the functionality of the models, they served as platforms to recapitulate skeletal muscle diseases such as muscle wasting produced by cancer cachexia. The genetic expression of 3D models demonstrated a better resemblance to the muscular biopsies of cachectic mouse models. Altogether, this biomaterial is aimed to fabricate manipulable skeletal muscle in vitro models in a non-costly, fast and feasible manner.
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Affiliation(s)
- Andrea García-Lizarribar
- Institute for Bioengineering of Catalonia Barcelona Institute of Science (IBEC-BIST), 08028 Barcelona, Spain; Centro de Investigación Biomédica en Red (CIBER-BBN), 28029 Madrid, Spain
| | - Aranzazu Villasante
- Institute for Bioengineering of Catalonia Barcelona Institute of Science (IBEC-BIST), 08028 Barcelona, Spain; Department of Electronic and Biomedical Engineering, University of Barcelona (UB), 08028 Barcelona, Spain.
| | - Jose Antonio Lopez-Martin
- Clinical & Translational Cancer Research Group, Instituto de Investigación Sanitaria Hospital 12 de Octubre (i+12), Av Córdoba s/n, 28041 Madrid, Spain; Medical Oncology Department, Hospital Universitario 12 de Octubre, Av de Córdoba s/n, 28041 Madrid, Spain
| | - Marta Flandez
- Clinical & Translational Cancer Research Group, Instituto de Investigación Sanitaria Hospital 12 de Octubre (i+12), Av Córdoba s/n, 28041 Madrid, Spain
| | - M Carmen Soler-Vázquez
- Department of Biochemistry and Physiology, School of Pharmacy and Food Sciences, Institut de Biomedicina de la Universitat de Barcelona (IBUB), UB, Spain
| | - Dolors Serra
- Department of Biochemistry and Physiology, School of Pharmacy and Food Sciences, Institut de Biomedicina de la Universitat de Barcelona (IBUB), UB, Spain; Centro de Investigación Biomédica en Red de Fisiopatología de la Obesidad y la Nutrición (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
| | - Laura Herrero
- Department of Biochemistry and Physiology, School of Pharmacy and Food Sciences, Institut de Biomedicina de la Universitat de Barcelona (IBUB), UB, Spain; Centro de Investigación Biomédica en Red de Fisiopatología de la Obesidad y la Nutrición (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
| | - Ana Sagrera
- Metabolism and Cell Signaling Laboratory, Spanish National Cancer Research Centre (CNIO), Madrid, Spain
| | - Alejo Efeyan
- Metabolism and Cell Signaling Laboratory, Spanish National Cancer Research Centre (CNIO), Madrid, Spain
| | - Josep Samitier
- Institute for Bioengineering of Catalonia Barcelona Institute of Science (IBEC-BIST), 08028 Barcelona, Spain; Centro de Investigación Biomédica en Red (CIBER-BBN), 28029 Madrid, Spain; Department of Electronic and Biomedical Engineering, University of Barcelona (UB), 08028 Barcelona, Spain.
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8
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Attaway AH, Bellar A, Mishra S, Karthikeyan M, Sekar J, Welch N, Musich R, Singh SS, Kumar A, Menon A, King J, Langen R, Webster J, Scheraga R, Rochon K, Mears J, Naga Prasad SV, Hatzoglou M, Chakraborty AA, Dasarathy S. Adaptive exhaustion during prolonged intermittent hypoxia causes dysregulated skeletal muscle protein homeostasis. J Physiol 2023; 601:567-606. [PMID: 36533558 PMCID: PMC10286804 DOI: 10.1113/jp283700] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 12/06/2022] [Indexed: 12/23/2022] Open
Abstract
Nocturnal hypoxaemia, which is common in chronic obstructive pulmonary disease (COPD) patients, is associated with skeletal muscle loss or sarcopenia, which contributes to adverse clinical outcomes. In COPD, we have defined this as prolonged intermittent hypoxia (PIH) because the duration of hypoxia in skeletal muscle occurs through the duration of sleep followed by normoxia during the day, in contrast to recurrent brief hypoxic episodes during obstructive sleep apnoea (OSA). Adaptive cellular responses to PIH are not known. Responses to PIH induced by three cycles of 8 h hypoxia followed by 16 h normoxia were compared to those during chronic hypoxia (CH) or normoxia for 72 h in murine C2C12 and human inducible pluripotent stem cell-derived differentiated myotubes. RNA sequencing followed by downstream analyses were complemented by experimental validation of responses that included both unique and shared perturbations in ribosomal and mitochondrial function during PIH and CH. A sarcopenic phenotype characterized by decreased myotube diameter and protein synthesis, and increased phosphorylation of eIF2α (Ser51) by eIF2α kinase, and of GCN-2 (general controlled non-derepressed-2), occurred during both PIH and CH. Mitochondrial oxidative dysfunction, disrupted supercomplex assembly, lower activity of Complexes I, III, IV and V, and reduced intermediary metabolite concentrations occurred during PIH and CH. Decreased mitochondrial fission occurred during CH. Physiological relevance was established in skeletal muscle of mice with COPD that had increased phosphorylation of eIF2α, lower protein synthesis and mitochondrial oxidative dysfunction. Molecular and metabolic responses with PIH suggest an adaptive exhaustion with failure to restore homeostasis during normoxia. KEY POINTS: Sarcopenia or skeletal muscle loss is one of the most frequent complications that contributes to mortality and morbidity in patients with chronic obstructive pulmonary disease (COPD). Unlike chronic hypoxia, prolonged intermittent hypoxia is a frequent, underappreciated and clinically relevant model of hypoxia in patients with COPD. We developed a novel, in vitro myotube model of prolonged intermittent hypoxia with molecular and metabolic perturbations, mitochondrial oxidative dysfunction, and consequent sarcopenic phenotype. In vivo studies in skeletal muscle from a mouse model of COPD shared responses with our myotube model, establishing the pathophysiological relevance of our studies. These data lay the foundation for translational studies in human COPD to target prolonged, nocturnal hypoxaemia to prevent sarcopenia in these patients.
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Affiliation(s)
- Amy H. Attaway
- Department of Pulmonary Medicine, Lerner Research Institute Cleveland Clinic, Cleveland, Ohio
| | - Annette Bellar
- Department of Inflammation and Immunity, Lerner Research Institute Cleveland Clinic, Cleveland, Ohio
| | - Saurabh Mishra
- Department of Inflammation and Immunity, Lerner Research Institute Cleveland Clinic, Cleveland, Ohio
| | - Manikandan Karthikeyan
- Department of Inflammation and Immunity, Lerner Research Institute Cleveland Clinic, Cleveland, Ohio
| | - Jinendiran Sekar
- Department of Inflammation and Immunity, Lerner Research Institute Cleveland Clinic, Cleveland, Ohio
| | - Nicole Welch
- Department of Inflammation and Immunity, Lerner Research Institute Cleveland Clinic, Cleveland, Ohio
- Department of Gastroenterology and Hepatology, Lerner Research Institute Cleveland Clinic, Cleveland, Ohio
| | - Ryan Musich
- Department of Inflammation and Immunity, Lerner Research Institute Cleveland Clinic, Cleveland, Ohio
| | - Shashi Shekhar Singh
- Department of Inflammation and Immunity, Lerner Research Institute Cleveland Clinic, Cleveland, Ohio
| | - Avinash Kumar
- Department of Inflammation and Immunity, Lerner Research Institute Cleveland Clinic, Cleveland, Ohio
| | - Aishwarya Menon
- Department of Inflammation and Immunity, Lerner Research Institute Cleveland Clinic, Cleveland, Ohio
| | - Jasmine King
- Department of Inflammation and Immunity, Lerner Research Institute Cleveland Clinic, Cleveland, Ohio
| | - Ramon Langen
- Department of Respiratory Medicine, Maastricht University Medical Center, Netherlands
| | - Justine Webster
- Department of Respiratory Medicine, Maastricht University Medical Center, Netherlands
| | - Rachel Scheraga
- Department of Inflammation and Immunity, Lerner Research Institute Cleveland Clinic, Cleveland, Ohio
| | - Kristy Rochon
- Department of Pharmacology, Case Western Reserve University, Cleveland, Ohio
| | - Jason Mears
- Department of Pharmacology, Case Western Reserve University, Cleveland, Ohio
| | - Sathyamangla V Naga Prasad
- Department of Cardiovascular and Metabolic Diseases, Lerner Research Institute Cleveland Clinic, Cleveland, Ohio
| | - Maria Hatzoglou
- Department of Genomic Medicine, Case Western Reserve University, Cleveland, Ohio
| | | | - Srinivasan Dasarathy
- Department of Pulmonary Medicine, Lerner Research Institute Cleveland Clinic, Cleveland, Ohio
- Department of Gastroenterology and Hepatology, Lerner Research Institute Cleveland Clinic, Cleveland, Ohio
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9
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Apa L, Cosentino M, Forconi F, Musarò A, Rizzuto E, Del Prete Z. The Development of an Innovative Embedded Sensor for the Optical Measurement of Ex-Vivo Engineered Muscle Tissue Contractility. SENSORS (BASEL, SWITZERLAND) 2022; 22:6878. [PMID: 36146227 PMCID: PMC9502572 DOI: 10.3390/s22186878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 09/02/2022] [Accepted: 09/08/2022] [Indexed: 06/16/2023]
Abstract
Tissue engineering is a multidisciplinary approach focused on the development of innovative bioartificial substitutes for damaged organs and tissues. For skeletal muscle, the measurement of contractile capability represents a crucial aspect for tissue replacement, drug screening and personalized medicine. To date, the measurement of engineered muscle tissues is rather invasive and not continuous. In this context, we proposed an innovative sensor for the continuous monitoring of engineered-muscle-tissue contractility through an embedded technique. The sensor is based on the calibrated deflection of one of the engineered tissue's supporting pins, whose movements are measured using a noninvasive optical method. The sensor was calibrated to return force values through the use of a step linear motor and a micro-force transducer. Experimental results showed that the embedded sensor did not alter the correct maturation of the engineered muscle tissue. Finally, as proof of concept, we demonstrated the ability of the sensor to capture alterations in the force contractility of the engineered muscle tissues subjected to serum deprivation.
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Affiliation(s)
- Ludovica Apa
- Department of Mechanical and Aerospace Engineering, Sapienza University of Rome, 00184 Rome, Italy
| | - Marianna Cosentino
- DAHFMO-Unit of Histology and Medical Embryology, Sapienza University of Rome, 00161 Rome, Italy
| | - Flavia Forconi
- DAHFMO-Unit of Histology and Medical Embryology, Sapienza University of Rome, 00161 Rome, Italy
| | - Antonio Musarò
- DAHFMO-Unit of Histology and Medical Embryology, Sapienza University of Rome, 00161 Rome, Italy
| | - Emanuele Rizzuto
- Department of Mechanical and Aerospace Engineering, Sapienza University of Rome, 00184 Rome, Italy
| | - Zaccaria Del Prete
- Department of Mechanical and Aerospace Engineering, Sapienza University of Rome, 00184 Rome, Italy
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