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Blanco JCG, Macías-García A, Rodríguez-Rego JM, Mendoza-Cerezo L, Sánchez-Margallo FM, Marcos-Romero AC, Pagador-Carrasco JB. Optimising Bioprinting Nozzles through Computational Modelling and Design of Experiments. Biomimetics (Basel) 2024; 9:460. [PMID: 39194439 DOI: 10.3390/biomimetics9080460] [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: 06/30/2024] [Revised: 07/19/2024] [Accepted: 07/26/2024] [Indexed: 08/29/2024] Open
Abstract
3D bioprinting is a promising technique for creating artificial tissues and organs. One of the main challenges of bioprinting is cell damage, due to high pressures and tensions. During the biofabrication process, extrusion bioprinting usually results in low cell viability, typically ranging from 40% to 80%, although better printing performance with higher cell viability can be achieved by optimising the experimental design and operating conditions, with nozzle geometry being a key factor. This article presents a review of studies that have used computational fluid dynamics (CFD) to optimise nozzle geometry. They show that the optimal ranges for diameter and length are 0.2 mm to 1 mm and 8 mm to 10 mm, respectively. In addition, it is recommended that the nozzle should have an internal angle of 20 to 30 degrees, an internal coating of ethylenediaminetetraacetic acid (EDTA), and a shear stress of less than 10 kPa. In addition, a design of experiments technique to obtain an optimal 3D bioprinting configuration for a bioink is also presented. This experimental design would identify bioprinting conditions that minimise cell damage and improve the viability of the printed cells.
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Affiliation(s)
- Juan C Gómez Blanco
- Jesús Usón Minimally Invasive Surgery Centre, Carretera N-521, km41.8, 10071 Cáceres, Spain
| | - Antonio Macías-García
- Department of Mechanical, Energy and Materials Engineering, School of Industrial Engineering, University of Extremadura, Avenida de Elvas, s/n, 06006 Badajoz, Spain
| | - Jesús M Rodríguez-Rego
- Department of Mechanical, Energy and Materials Engineering, School of Industrial Engineering, University of Extremadura, Avenida de Elvas, s/n, 06006 Badajoz, Spain
| | - Laura Mendoza-Cerezo
- Department of Mechanical, Energy and Materials Engineering, School of Industrial Engineering, University of Extremadura, Avenida de Elvas, s/n, 06006 Badajoz, Spain
| | | | - Alfonso C Marcos-Romero
- Department of Mechanical, Energy and Materials Engineering, School of Industrial Engineering, University of Extremadura, Avenida de Elvas, s/n, 06006 Badajoz, Spain
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Milton LA, Davern JW, Hipwood L, Chaves JDS, McGovern J, Broszczak D, Hutmacher DW, Meinert C, Toh YC. Liver click dECM hydrogels for engineering hepatic microenvironments. Acta Biomater 2024:S1742-7061(24)00351-9. [PMID: 38960110 DOI: 10.1016/j.actbio.2024.06.037] [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: 01/22/2024] [Revised: 06/20/2024] [Accepted: 06/25/2024] [Indexed: 07/05/2024]
Abstract
Decellularized extracellular matrix (dECM) hydrogels provide tissue-specific microenvironments which accommodate physiological cellular phenotypes in 3D in vitro cell cultures. However, their formation hinges on collagen fibrillogenesis, a complex process which limits regulation of physicochemical properties. Hence, achieving reproducible results with dECM hydrogels poses as a challenge. Here, we demonstrate that thiolation of solubilized liver dECM enables rapid formation of covalently crosslinked hydrogels via Michael-type addition, allowing for precise control over mechanical properties and superior organotypic biological activity. Investigation of various decellularization methodologies revealed that treatment of liver tissue with Triton X-100 and ammonium hydroxide resulted in near complete DNA removal with significant retention of the native liver proteome. Chemical functionalization of pepsin-solubilized liver dECMs via 1-ethyl-3(3-dimethylamino)propyl carbodiimide (EDC)/N-hydroxysuccinimide (NHS) coupling of l-Cysteine created thiolated liver dECM (dECM-SH), which rapidly reacted with 4-arm polyethylene glycol (PEG)-maleimide to form optically clear hydrogels under controlled conditions. Importantly, Young's moduli could be precisely tuned between 1 - 7 kPa by varying polymer concentrations, enabling close replication of healthy and fibrotic liver conditions in in vitro cell cultures. Click dECM-SH hydrogels were cytocompatible, supported growth of HepG2 and HepaRG liver cells, and promoted liver-specific functional phenotypes as evidenced by increased metabolic activity, as well CYP1A2 and CYP3A4 activity and excretory function when compared to monolayer culture and collagen-based hydrogels. Our findings demonstrate that click-functionalized dECM hydrogels offer a highly controlled, reproducible alternative to conventional tissue-derived hydrogels for in vitro cell culture applications. STATEMENT OF SIGNIFICANCE: Traditional dECM hydrogels face challenges in reproducibility and mechanical property control due to variable crosslinking processes. We introduce a click hydrogel based on porcine liver decellularized extracellular matrix (dECM) that circumnavigates these challenges. After optimizing liver decellularization for ECM retention, we integrated thiol-functionalized liver dECM with polyethylene-glycol derivatives through Michael-type addition click chemistry, enabling rapid, room-temperature gelation. This offers enhanced control over the hydrogel's mechanical and biochemical properties. The resultant click dECM hydrogels mimic the liver's natural ECM and exhibit greater mechanical tunability and handling ease, facilitating their application in high-throughput and industrial settings. Moreover, these hydrogels significantly improve the function of HepaRG-derived hepatocytes in 3D culture, presenting an advancement for liver tissue cell culture models for drug testing applications.
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Affiliation(s)
- Laura A Milton
- Faculty of Engineering, School of Mechanical, Medical and Process Engineering, Queensland University of Technology, Brisbane, Australia; Centre for Biomedical Technologies, Queensland University of Technology, Brisbane, Australia; Gelomics Pty Ltd, Brisbane, Australia
| | - Jordan W Davern
- Faculty of Engineering, School of Mechanical, Medical and Process Engineering, Queensland University of Technology, Brisbane, Australia; Centre for Biomedical Technologies, Queensland University of Technology, Brisbane, Australia; Gelomics Pty Ltd, Brisbane, Australia; ARC Training Centre for Cell and Tissue Engineering Technologies, Queensland University of Technology, Brisbane, Australia
| | - Luke Hipwood
- Centre for Biomedical Technologies, Queensland University of Technology, Brisbane, Australia; Gelomics Pty Ltd, Brisbane, Australia; Faculty of Health, School of Biomedical Sciences, Queensland University of Technology, Brisbane, Australia
| | - Juliana D S Chaves
- Cell & Molecular Biology Department, Mental Health Program, QIMR Berghofer Medical Research Institute, Brisbane, Australia
| | - Jacqui McGovern
- Centre for Biomedical Technologies, Queensland University of Technology, Brisbane, Australia; ARC Training Centre for Cell and Tissue Engineering Technologies, Queensland University of Technology, Brisbane, Australia; Max Planck Queensland Centre (MPQC) for the Materials Science of Extracellular Matrices, Queensland University of Technology, Brisbane, Australia
| | - Daniel Broszczak
- Faculty of Health, School of Biomedical Sciences, Queensland University of Technology, Brisbane, Australia
| | - Dietmar W Hutmacher
- Centre for Biomedical Technologies, Queensland University of Technology, Brisbane, Australia; ARC Training Centre for Cell and Tissue Engineering Technologies, Queensland University of Technology, Brisbane, Australia; Max Planck Queensland Centre (MPQC) for the Materials Science of Extracellular Matrices, Queensland University of Technology, Brisbane, Australia; Australian Research Council (ARC) Training Centre for Multiscale 3D Imaging, Modelling and Manufacturing (M3D Innovation), Queensland University of Technology, Brisbane, Australia
| | - Christoph Meinert
- Centre for Biomedical Technologies, Queensland University of Technology, Brisbane, Australia; Gelomics Pty Ltd, Brisbane, Australia.
| | - Yi-Chin Toh
- Faculty of Engineering, School of Mechanical, Medical and Process Engineering, Queensland University of Technology, Brisbane, Australia; Centre for Biomedical Technologies, Queensland University of Technology, Brisbane, Australia; ARC Training Centre for Cell and Tissue Engineering Technologies, Queensland University of Technology, Brisbane, Australia; Max Planck Queensland Centre (MPQC) for the Materials Science of Extracellular Matrices, Queensland University of Technology, Brisbane, Australia; Centre for Microbiome Research, Queensland University of Technology, Brisbane, Australia.
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Davern JW, Hipwood L, Bray LJ, Meinert C, Klein TJ. Addition of Laponite to gelatin methacryloyl bioinks improves the rheological properties and printability to create mechanically tailorable cell culture matrices. APL Bioeng 2024; 8:016101. [PMID: 38204454 PMCID: PMC10776181 DOI: 10.1063/5.0166206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 12/12/2023] [Indexed: 01/12/2024] Open
Abstract
Extrusion-based bioprinting has gained widespread popularity in biofabrication due to its ability to assemble cells and biomaterials in precise patterns and form tissue-like constructs. To achieve this, bioinks must have rheological properties suitable for printing while maintaining cytocompatibility. However, many commonly used biomaterials do not meet the rheological requirements and therefore require modification for bioprinting applications. This study demonstrates the incorporation of Laponite-RD (LPN) into gelatin methacryloyl (GelMA) to produce highly customizable bioinks with desired rheological and mechanical properties for extrusion-based bioprinting. Bioink formulations were based on GelMA (5%-15% w/v) and LPN (0%-4% w/v), and a comprehensive rheological design was applied to evaluate key rheological properties necessary for extrusion-based bioprinting. The results showed that GelMA bioinks with LPN (1%-4% w/v) exhibited pronounced shear thinning and viscoelastic behavior, as well as improved thermal stability. Furthermore, a concentration window of 1%-2% (w/v) LPN to 5%-15% GelMA demonstrated enhanced rheological properties and printability required for extrusion-based bioprinting. Construct mechanical properties were highly tunable by varying polymer concentration and photocrosslinking parameters, with Young's moduli ranging from ∼0.2 to 75 kPa. Interestingly, at higher Laponite concentrations, GelMA cross-linking was inhibited, resulting in softer hydrogels. High viability of MCF-7 breast cancer cells was maintained in both free-swelling droplets and printed hydrogels, and metabolically active spheroids formed over 7 days of culture in all conditions. In summary, the addition of 1%-2% (w/v) LPN to gelatin-based bioinks significantly enhanced rheological properties and retained cell viability and proliferation, suggesting its suitability for extrusion-based bioprinting.
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Damle MN, Chaudhari L, Tardalkar K, Bhamare N, Jagdale S, Gaikwad V, Chhabra D, Kumar B, Manuja A, Joshi MG. A biologically functional bioink based on extracellular matrix derived collagen for 3D printing of skin. Int J Biol Macromol 2024; 258:128851. [PMID: 38114005 DOI: 10.1016/j.ijbiomac.2023.128851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 12/12/2023] [Accepted: 12/14/2023] [Indexed: 12/21/2023]
Abstract
Over the past few years, several advancements have been made to develop artificial skin that mimics human skin. Artificial skin manufactured using 3D printing technology that includes all epidermal and dermal components, such as collagen, may offer a viable solution. The skin-specific bioink was derived from digested chicken skin and incorporated into PVA (polyvinyl alcohol) and gelatin. The prepared bioink was further analyzed for its structure, stability, biocompatibility, and wound healing potential in in vitro, in ovo, and in vivo models. The 3D-printed skin showed excellent mechanical properties. In vitro scratch assays showed the proliferation and migration of cells within 24 h. In an in ovo assay, the 3D-printed skin facilitated the attachment of cells to the scaffolds. In the animal study, the quick cellular recruitment at the injury site accelerated wound healing. Further, hydroxyproline content was estimated to be 0.9-1.2 mg/ml, and collagen content was 7.5 %, which confirmed the epithelization. The relative expressions of MMP-9, COMP, TNF-α, and IL-6 genes were found to be increased compared to the control. These results demonstrate that 3D bioprinting represents a suitable technology to generate bioengineered skin for therapeutic and industrial applications in an automated manner.
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Affiliation(s)
- Mrunal N Damle
- Department of Stem Cells & Regenerative Medicine, D Y Patil Education Society (Deemed to be University), E 869, D. Y. Patil Vidyanagar, Kasaba Bawada, Kolhapur 416006, MS, India; Stem Plus Biotech, SMK Commercial Complex, C/S No. 1317/2, Near Shivaji Maharaj Putla, Bus Stand Road, Gaon Bhag, Sangli, MS 416416, India
| | - Leena Chaudhari
- Department of Stem Cells & Regenerative Medicine, D Y Patil Education Society (Deemed to be University), E 869, D. Y. Patil Vidyanagar, Kasaba Bawada, Kolhapur 416006, MS, India
| | - Kishor Tardalkar
- Department of Stem Cells & Regenerative Medicine, D Y Patil Education Society (Deemed to be University), E 869, D. Y. Patil Vidyanagar, Kasaba Bawada, Kolhapur 416006, MS, India
| | - Nilesh Bhamare
- Department of Stem Cells & Regenerative Medicine, D Y Patil Education Society (Deemed to be University), E 869, D. Y. Patil Vidyanagar, Kasaba Bawada, Kolhapur 416006, MS, India
| | - Swapnali Jagdale
- Department of Stem Cells & Regenerative Medicine, D Y Patil Education Society (Deemed to be University), E 869, D. Y. Patil Vidyanagar, Kasaba Bawada, Kolhapur 416006, MS, India
| | - Vaishali Gaikwad
- Department of Surgery, Dr. D Y Patil Medical College, Hospital and Research Institute, Kadamwadi, Kolhapur 41600, Maharashtra, India
| | - Dharvi Chhabra
- ICAR-National Research Centre on Equines, Hisar 125001, Haryana, India
| | - Balvinder Kumar
- ICAR-National Research Centre on Equines, Hisar 125001, Haryana, India
| | - Anju Manuja
- ICAR-National Research Centre on Equines, Hisar 125001, Haryana, India.
| | - Meghnad G Joshi
- Department of Stem Cells & Regenerative Medicine, D Y Patil Education Society (Deemed to be University), E 869, D. Y. Patil Vidyanagar, Kasaba Bawada, Kolhapur 416006, MS, India; Stem Plus Biotech, SMK Commercial Complex, C/S No. 1317/2, Near Shivaji Maharaj Putla, Bus Stand Road, Gaon Bhag, Sangli, MS 416416, India.
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Bharadwaj T, Chrungoo S, Verma D. Self-assembled chitosan/gelatin nanofibrous aggregates incorporated thermosensitive nanocomposite bioink for bone tissue engineering. Carbohydr Polym 2024; 324:121544. [PMID: 37985063 DOI: 10.1016/j.carbpol.2023.121544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 10/12/2023] [Accepted: 10/29/2023] [Indexed: 11/22/2023]
Abstract
Chitosan-based thermosensitive bioink can be a potential option as bioinks for bone tissue engineering because of their excellent biocompatibility and crosslinker-free gelation at physiological temperature. However, their low mechanical strength, poor printability, and low post-printing cell viability are some of their limitations. In this work, self-assembled nanofibrous aggregates of chitosan and gelatin were prepared and incorporated in chitosan-based bioinks to enhance printability, mechanical properties, post-printing cell viability, and proliferation. Subsequently, the optimal concentration of nanohydroxyapatite was determined, and the potential of the nanocomposite bioink was evaluated. Physiochemical, mechanical, and in vitro characterizations were carried out for the developed nanocomposite bioink. The bioink had optimum printability at 10 % nanohydroxyapatite and cell viability >88 %. The composite bioink had a low water uptake capacity (2.5 %) and degraded within 3 weeks in the presence of lysozyme. Mechanical characterization revealed an elastic modulus of about 15.5 kPa. Rheological analysis indicated a higher storage modulus of the bioink samples at 37 °C. ALP activity of 36.8 units/ml after 14 days of scaffold culture in osteogenic media indicated high cellular activity. These results suggested that the incorporation of osteogenic nanohydroxyapatite and nanofibrous aggregates improved the overall osteogenic and physiochemical potential of the thermosensitive bioink.
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Affiliation(s)
- Tanmay Bharadwaj
- Department of Biotechnology and Medical Engineering, National Institute of Technology, Rourkela, Odisha 769008, India
| | - Shreya Chrungoo
- Department of Biotechnology and Medical Engineering, National Institute of Technology, Rourkela, Odisha 769008, India
| | - Devendra Verma
- Department of Biotechnology and Medical Engineering, National Institute of Technology, Rourkela, Odisha 769008, India.
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Ronca A, D'Amora U, Capuana E, Zihlmann C, Stiefel N, Pattappa G, Schewior R, Docheva D, Angele P, Ambrosio L. Development of a highly concentrated collagen ink for the creation of a 3D printed meniscus. Heliyon 2023; 9:e23107. [PMID: 38144315 PMCID: PMC10746456 DOI: 10.1016/j.heliyon.2023.e23107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 11/14/2023] [Accepted: 11/27/2023] [Indexed: 12/26/2023] Open
Abstract
The most prevalent extracellular matrix (ECM) protein in the meniscus is collagen, which controls cell activity and aids in preserving the biological and structural integrity of the ECM. To create stable and high-precision 3D printed collagen scaffolds, ink formulations must possess good printability and cytocompatibility. This study aims to overlap the limitation in the 3D printing of pure collagen, and to develop a highly concentrated collagen ink for meniscus fabrication. The extrusion test revealed that 12.5 % collagen ink had the best combination of high collagen concentration and printability. The ink was specifically designed to have load-bearing capacity upon printing and characterized with respect to rheological and extrusion properties. Following printing of structures with different infill, a series of post-processing steps, including salt stabilization, pH shifting, washing, freeze-drying, crosslinking and sterilization were performed, and optimised to maintain the stability of the engineered construct. Mechanical testing highlighted a storage modulus of 70 kPa for the lower porous structure while swelling properties showed swelling ratio between 9 and 11 after 15 min of soaking. Moreover, human avascular and vascular meniscus cells cultured on the scaffolds deposited a meniscus-like matrix containing collagen I, II and glycosaminoglycans after 28 days of culture. Finally, as proof-of-concept, human size 3D printed meniscus scaffold were created.
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Affiliation(s)
- Alfredo Ronca
- Institute of Polymers, Composites and Biomaterials, National Research Council, Naples, Italy
| | - Ugo D'Amora
- Institute of Polymers, Composites and Biomaterials, National Research Council, Naples, Italy
| | - Elisa Capuana
- Institute of Polymers, Composites and Biomaterials, National Research Council, Naples, Italy
| | - Carla Zihlmann
- Geistlich Pharma AG (Geistlich), Bahnhofstrasse 40, CH-6110 Wolhusen, Switzerland
| | - Niklaus Stiefel
- Geistlich Pharma AG (Geistlich), Bahnhofstrasse 40, CH-6110 Wolhusen, Switzerland
| | - Girish Pattappa
- Experimental Trauma Surgery, Department of Trauma Surgery, University Regensburg Medical Centre, Regensburg, Germany
| | - Ruth Schewior
- Experimental Trauma Surgery, Department of Trauma Surgery, University Regensburg Medical Centre, Regensburg, Germany
| | - Denitsa Docheva
- Experimental Trauma Surgery, Department of Trauma Surgery, University Regensburg Medical Centre, Regensburg, Germany
- Department of Musculoskeletal Tissue Regeneration, Orthopaedic Hospital König-Ludwig-Haus, University of Wurzburg, Germany
| | - Peter Angele
- Experimental Trauma Surgery, Department of Trauma Surgery, University Regensburg Medical Centre, Regensburg, Germany
- Sporthopaedicum Regensburg, Hildegard von Bingen Strasse 1, 93053 Regensburg, Germany
| | - Luigi Ambrosio
- Institute of Polymers, Composites and Biomaterials, National Research Council, Naples, Italy
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Han X, Saiding Q, Cai X, Xiao Y, Wang P, Cai Z, Gong X, Gong W, Zhang X, Cui W. Intelligent Vascularized 3D/4D/5D/6D-Printed Tissue Scaffolds. NANO-MICRO LETTERS 2023; 15:239. [PMID: 37907770 PMCID: PMC10618155 DOI: 10.1007/s40820-023-01187-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Accepted: 07/25/2023] [Indexed: 11/02/2023]
Abstract
Blood vessels are essential for nutrient and oxygen delivery and waste removal. Scaffold-repairing materials with functional vascular networks are widely used in bone tissue engineering. Additive manufacturing is a manufacturing technology that creates three-dimensional solids by stacking substances layer by layer, mainly including but not limited to 3D printing, but also 4D printing, 5D printing and 6D printing. It can be effectively combined with vascularization to meet the needs of vascularized tissue scaffolds by precisely tuning the mechanical structure and biological properties of smart vascular scaffolds. Herein, the development of neovascularization to vascularization to bone tissue engineering is systematically discussed in terms of the importance of vascularization to the tissue. Additionally, the research progress and future prospects of vascularized 3D printed scaffold materials are highlighted and presented in four categories: functional vascularized 3D printed scaffolds, cell-based vascularized 3D printed scaffolds, vascularized 3D printed scaffolds loaded with specific carriers and bionic vascularized 3D printed scaffolds. Finally, a brief review of vascularized additive manufacturing-tissue scaffolds in related tissues such as the vascular tissue engineering, cardiovascular system, skeletal muscle, soft tissue and a discussion of the challenges and development efforts leading to significant advances in intelligent vascularized tissue regeneration is presented.
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Affiliation(s)
- Xiaoyu Han
- Department of Orthopaedics, Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai, 200025, People's Republic of China
- Department of Orthopedics, Jinan Central Hospital, Shandong First Medical University and Shandong Academy of Medical Sciences, 105 Jiefang Road, Lixia District, Jinan, 250013, Shandong, People's Republic of China
| | - Qimanguli Saiding
- Department of Orthopaedics, Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai, 200025, People's Republic of China
| | - Xiaolu Cai
- Department of Biomedical Engineering, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, Hubei, People's Republic of China
| | - Yi Xiao
- School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138, USA
| | - Peng Wang
- Department of Orthopedics, Jinan Central Hospital, Shandong First Medical University and Shandong Academy of Medical Sciences, 105 Jiefang Road, Lixia District, Jinan, 250013, Shandong, People's Republic of China
| | - Zhengwei Cai
- Department of Orthopaedics, Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai, 200025, People's Republic of China
| | - Xuan Gong
- University of Texas Southwestern Medical Center, Dallas, TX, 75390-9096, USA
| | - Weiming Gong
- Department of Orthopedics, Jinan Central Hospital, Shandong First Medical University and Shandong Academy of Medical Sciences, 105 Jiefang Road, Lixia District, Jinan, 250013, Shandong, People's Republic of China.
| | - Xingcai Zhang
- School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138, USA.
| | - Wenguo Cui
- Department of Orthopaedics, Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai, 200025, People's Republic of China.
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Hopson C, Rigual V, Alonso MV, Oliet M, Rodriguez F. Eucalyptus bleached kraft pulp-ionic liquid inks for 3D printing of ionogels and hydrogels. Carbohydr Polym 2023; 313:120897. [PMID: 37182980 DOI: 10.1016/j.carbpol.2023.120897] [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: 12/14/2022] [Revised: 03/22/2023] [Accepted: 04/07/2023] [Indexed: 05/16/2023]
Abstract
3D printing has been recently recognized as one of the most promising technologies due to the multiple options to fabricate cost-effective and customizable objects. However, the necessity to substitute fossil fuels as raw materials is increasing the research on bio-based inks with recyclable and eco-friendly properties. In this work, we formulated inks for the 3D printing of ionogels and hydrogels with bleached kraft pulp dissolved in [Emim][DMP] at different concentrations (1-4 wt%). We explored each ink's rheological properties and printability and compared the printability parameters with a commercial ink. The rheological results showed that the 3 % and 4 % cellulose-ionic liquid inks exhibited the best properties. Both had values of damping factor between 0.4 and 0.7 and values of yield stress between 1900 and 2500 Pa. Analyzing the printability, the 4 wt% ink was selected as the most promising because the printed ionogels and the hydrogels had the best print resolution and fidelity, similar to the reference ink. After printing, ionogels and hydrogels had values of the elastic modulus (G') between 103 and 104 Pa, and the ionogels are recyclables. Altogether, these 3D printed cellulose ionogels and hydrogels may have an opportunity in the electrochemical and medical fields, respectively.
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Affiliation(s)
- Cynthia Hopson
- Chemical Engineering and Materials Department, Complutense University of Madrid, Av. Complutense S/N, 28040 Madrid, Spain.
| | - Victoria Rigual
- Chemical Engineering and Materials Department, Complutense University of Madrid, Av. Complutense S/N, 28040 Madrid, Spain
| | - M Virginia Alonso
- Chemical Engineering and Materials Department, Complutense University of Madrid, Av. Complutense S/N, 28040 Madrid, Spain
| | - Mercedes Oliet
- Chemical Engineering and Materials Department, Complutense University of Madrid, Av. Complutense S/N, 28040 Madrid, Spain
| | - Francisco Rodriguez
- Chemical Engineering and Materials Department, Complutense University of Madrid, Av. Complutense S/N, 28040 Madrid, Spain
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Nowogrodski C, Damatov Y, Sapru S, Shoseyov O. In Situ Synthesis of Keratin and Melanin Chromophoric Submicron Particles. ACS OMEGA 2023; 8:26762-26774. [PMID: 37546605 PMCID: PMC10398706 DOI: 10.1021/acsomega.3c00189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 06/01/2023] [Indexed: 08/08/2023]
Abstract
In humans, melanin plays an esthetic role, dictating hair and skin color and traits, while keratin is the protein that comprises most of the epidermis layer. Eumelanin and pheomelanin are types of melanin synthesized from the same building blocks via enzymatic oxidation. Pheomelanin has an additional building block, cysteine amino acid, which affects its final structure. Keratin contains high cysteine content, and by exploiting free thiols in hydrolyzed keratin, we demonstrate the formation of keratin-melanin (KerMel) chromophoric submicron particles. Cryo-TEM analyses found KerMel particle sizes to be 100-300 nm and arranged in the form of a central keratin particle with polymerized l-dopa chains. Attenuated total reflection (ATR)-FTIR, UV-vis, and fluorescence measurements identified new chemical bonds, indicating the formation of KerMel particles. Finally, KerMel replicated natural skin tones and proved cytocompatibility for human epidermal keratinocytes at concentrations below 0.1 mg/mL. Taken together, KerMel is a novel, tunable material that has the potential to integrate into the cosmetic industry.
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10
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Simińska-Stanny J, Hachemi F, Dodi G, Cojocaru FD, Gardikiotis I, Podstawczyk D, Delporte C, Jiang G, Nie L, Shavandi A. Optimizing phenol-modified hyaluronic acid for designing shape-maintaining biofabricated hydrogel scaffolds in soft tissue engineering. Int J Biol Macromol 2023:125201. [PMID: 37270140 DOI: 10.1016/j.ijbiomac.2023.125201] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 05/18/2023] [Accepted: 05/31/2023] [Indexed: 06/05/2023]
Abstract
In this study, we developed a well-printable biomaterial ink for 3D printing of shape-maintaining hydrogel scaffolds. The hydrogel base comprised tyramine-modified hyaluronic acid (HA-Tyr) and gelatin methacrylate (GelMA) and was dually cross-linked. Using the Box-Behnken design, we explored how varying the ink composition affected fiber formation and shape preservation. By adjusting the polymer ratios, we produced a stable hydrogel with varying responses, from a viscous liquid to a thick gel, and optimized 3D scaffolds that were structurally stable both during and after printing, offering precision and flexibility. Our ink exhibited shear-thinning behavior and high swelling capacity, as well as ECM-like characteristics and biocompatibility, making it an ideal candidate for soft tissues matrices with storage modulus of around 300 Pa. Animal trials and CAM assays confirmed its biocompatibility and integration with host tissue.
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Affiliation(s)
- Julia Simińska-Stanny
- Université libre de Bruxelles (ULB), École polytechnique de Bruxelles, 3BIO-BioMatter, Avenue F.D. Roosevelt, 50 - CP 165/61, 1050 Brussels, Belgium; Department of Process Engineering and Technology of Polymer and Carbon Materials, Faculty of Chemistry, Wroclaw University of Science and Technology, Norwida 4/6, 50-373 Wroclaw, Poland
| | - Feza Hachemi
- Université libre de Bruxelles (ULB), École polytechnique de Bruxelles, 3BIO-BioMatter, Avenue F.D. Roosevelt, 50 - CP 165/61, 1050 Brussels, Belgium; Université Paris Saclay, Polytech Paris Saclay, Rue Louis de Broglie, 91400 Orsay, France
| | - Gianina Dodi
- Faculty of Medical Bioengineering, Grigore T. Popa, University of Medicine and Pharmacy of Iasi, Romania
| | - Florina D Cojocaru
- Faculty of Medical Bioengineering, Grigore T. Popa, University of Medicine and Pharmacy of Iasi, Romania
| | - Ioannis Gardikiotis
- Advanced Research and Development Center for Experimental Medicine (CEMEX), Grigore T. Popa, University of Medicine and Pharmacy of Iasi, Romania
| | - Daria Podstawczyk
- Department of Process Engineering and Technology of Polymer and Carbon Materials, Faculty of Chemistry, Wroclaw University of Science and Technology, Norwida 4/6, 50-373 Wroclaw, Poland
| | - Christine Delporte
- Université libre de Bruxelles (ULB), Faculté de Médecine, Campus Erasme - CP 611, Laboratory of Pathophysiological and Nutritional Biochemistry, Route de Lennik, 808, 1070 Bruxelles, Belgium
| | - Guohua Jiang
- School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, China; International Scientific and Technological Cooperation Base of Intelligent Biomaterials and Functional Fibers, Zhejiang Sci-Tech University, Hangzhou, China
| | - Lei Nie
- Université libre de Bruxelles (ULB), École polytechnique de Bruxelles, 3BIO-BioMatter, Avenue F.D. Roosevelt, 50 - CP 165/61, 1050 Brussels, Belgium; College of Life Science, Xinyang Normal University, Xinyang, China
| | - Amin Shavandi
- Université libre de Bruxelles (ULB), École polytechnique de Bruxelles, 3BIO-BioMatter, Avenue F.D. Roosevelt, 50 - CP 165/61, 1050 Brussels, Belgium.
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11
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Wang J, Cui Z, Maniruzzaman M. Bioprinting: a focus on improving bioink printability and cell performance based on different process parameters. Int J Pharm 2023; 640:123020. [PMID: 37149110 DOI: 10.1016/j.ijpharm.2023.123020] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 04/25/2023] [Accepted: 05/01/2023] [Indexed: 05/08/2023]
Abstract
Three dimensional (3D) bioprinting is an emerging biofabrication technique that shows great potential in the field of tissue engineering, regenerative medicine and advanced drug delivery. Despite the current advancement of bioprinting technology, it faces several obstacles such as the challenge of optimizing the printing resolution of 3D constructs while retaining cell viability before, during, and after bioprinting. Therefore, it is of great significance to fully understand factors that influence the shape fidelity of printed structures and the performance of cells encapsulated in bioinks. This review presents a comprehensive analysis of bioprinting process parameters that influence bioink printability and cell performance, including bioink properties (composition, concentration, and component ratio), printing speed and pressure, nozzle charateristics (size, length, and geometry), and crosslinking parameters (crosslinker types, concentration, and crosslinking time). Key examples are provided to analyze how these parameters could be tailored to achieve the optimal printing resolution as well as cell performance. Finally, future prospects of bioprinting technology, including correlating process parameters to particular cell types with predefined applications, applying statistical analysis and artificial intelligence (AI)/machine learning (ML) technique in parameter screening, and optimizing 4D bioprinting process parameters, are highlighted.
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Affiliation(s)
- Jiawei Wang
- Pharmaceutical Engineering and 3D Printing (PharmE3D) Lab, Division of Molecular Pharmaceutics and Drug Delivery, College of Pharmacy, The University of Texas at Austin, Austin, TX 78712, USA
| | - Zhengrong Cui
- Division of Molecular Pharmaceutics and Drug Delivery, College of Pharmacy, The University of Texas at Austin, Austin, TX 78712, USA
| | - Mohammed Maniruzzaman
- Pharmaceutical Engineering and 3D Printing (PharmE3D) Lab, Division of Molecular Pharmaceutics and Drug Delivery, College of Pharmacy, The University of Texas at Austin, Austin, TX 78712, USA
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12
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The Influence of Pregelatinized Starch on the Rheology of a Gellan Gum-Collagen IPN Hydrogel for 3D bioprinting. Chem Eng Res Des 2023. [DOI: 10.1016/j.cherd.2023.02.042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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13
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Application of Hydrogels as Three-Dimensional Bioprinting Ink for Tissue Engineering. Gels 2023; 9:gels9020088. [PMID: 36826258 PMCID: PMC9956898 DOI: 10.3390/gels9020088] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 01/15/2023] [Accepted: 01/18/2023] [Indexed: 01/22/2023] Open
Abstract
The use of three-dimensional bioprinting technology combined with the principle of tissue engineering is important for the construction of tissue or organ regeneration microenvironments. As a three-dimensional bioprinting ink, hydrogels need to be highly printable and provide a stiff and cell-friendly microenvironment. At present, hydrogels are used as bioprinting inks in tissue engineering. However, there is still a lack of summary of the latest 3D printing technology and the properties of hydrogel materials. In this paper, the materials commonly used as hydrogel bioinks; the advanced technologies including inkjet bioprinting, extrusion bioprinting, laser-assisted bioprinting, stereolithography bioprinting, suspension bioprinting, and digital 3D bioprinting technologies; printing characterization including printability and fidelity; biological properties, and the application fields of bioprinting hydrogels in bone tissue engineering, skin tissue engineering, cardiovascular tissue engineering are reviewed, and the current problems and future directions are prospected.
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14
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Trikalitis VD, Kroese NJJ, Kaya M, Cofiño-Fabres C, Ten Den S, Khalil ISM, Misra S, Koopman BFJM, Passier R, Schwach V, Rouwkema J. Embedded 3D printing of dilute particle suspensions into dense complex tissue fibers using shear thinning xanthan baths. Biofabrication 2022; 15. [PMID: 36347040 DOI: 10.1088/1758-5090/aca124] [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: 08/07/2022] [Accepted: 11/08/2022] [Indexed: 11/09/2022]
Abstract
In order to fabricate functional organoids and microtissues, a high cell density is generally required. As such, the placement of cell suspensions in molds or microwells to allow for cell concentration by sedimentation is the current standard for the production of organoids and microtissues. Even though molds offer some level of control over the shape of the resulting microtissue, this control is limited as microtissues tend to compact towards a sphere after sedimentation of the cells. 3D bioprinting on the other hand offers complete control over the shape of the resulting structure. Even though the printing of dense cell suspensions in the ink has been reported, extruding dense cellular suspensions is challenging and generally results in high shear stresses on the cells and a poor shape fidelity of the print. As such, additional materials such as hydrogels are added in the bioink to limit shear stresses, and to improve shape fidelity and resolution. The maximum cell concentration that can be incorporated in a hydrogel-based ink before the ink's rheological properties are compromised, is significantly lower than the concentration in a tissue equivalent. Additionally, the hydrogel components often interfere with cellular self-assembly processes. To circumvent these limitations, we report a simple and inexpensive xanthan bath based embedded printing method to 3D print dense functional linear tissues using dilute particle suspensions consisting of cells, spheroids, hydrogel beads, or combinations thereof. Using this method, we demonstrated the self-organization of functional cardiac tissue fibers with a layer of epicardial cells surrounding a body of cardiomyocytes.
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Affiliation(s)
- Vasileios D Trikalitis
- Department of Biomechanical Engineering, Vascularization Lab, University of Twente, Technical Medical Centre, 7500AE Enschede, The Netherlands
| | - Niels J J Kroese
- Department of Applied Stem Cell Technologies, University of Twente, Technical Medical Centre, 7500AE Enschede, The Netherlands
| | - Mert Kaya
- Surgical Robotics Laboratory, Department of Biomechanical Engineering, University of Twente, TechMed Center, MESA+ Institute, 7500AE Enschede, The Netherlands.,Surgical Robotics Laboratory, Department of Biomedical Engineering, University of Groningen and University Medical Centre Groningen, 9713AV Groningen, The Netherlands
| | - Carla Cofiño-Fabres
- Department of Applied Stem Cell Technologies, University of Twente, Technical Medical Centre, 7500AE Enschede, The Netherlands
| | - Simone Ten Den
- Department of Applied Stem Cell Technologies, University of Twente, Technical Medical Centre, 7500AE Enschede, The Netherlands
| | - Islam S M Khalil
- Surgical Robotics Laboratory, Department of Biomechanical Engineering, University of Twente, TechMed Center, MESA+ Institute, 7500AE Enschede, The Netherlands
| | - Sarthak Misra
- Surgical Robotics Laboratory, Department of Biomechanical Engineering, University of Twente, TechMed Center, MESA+ Institute, 7500AE Enschede, The Netherlands.,Surgical Robotics Laboratory, Department of Biomedical Engineering, University of Groningen and University Medical Centre Groningen, 9713AV Groningen, The Netherlands
| | - Bart F J M Koopman
- Department of Biomechanical Engineering, Vascularization Lab, University of Twente, Technical Medical Centre, 7500AE Enschede, The Netherlands
| | - Robert Passier
- Department of Applied Stem Cell Technologies, University of Twente, Technical Medical Centre, 7500AE Enschede, The Netherlands
| | - Verena Schwach
- Department of Applied Stem Cell Technologies, University of Twente, Technical Medical Centre, 7500AE Enschede, The Netherlands
| | - Jeroen Rouwkema
- Department of Biomechanical Engineering, Vascularization Lab, University of Twente, Technical Medical Centre, 7500AE Enschede, The Netherlands
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15
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A Three-Dimensional Bioprinted Copolymer Scaffold with Biocompatibility and Structural Integrity for Potential Tissue Regeneration Applications. Polymers (Basel) 2022; 14:polym14163415. [PMID: 36015671 PMCID: PMC9413511 DOI: 10.3390/polym14163415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 08/09/2022] [Accepted: 08/17/2022] [Indexed: 11/17/2022] Open
Abstract
The present study was to investigate the rheological property, printability, and cell viability of alginate−gelatin composed hydrogels as a potential cell-laden bioink for three-dimensional (3D) bioprinting applications. The 2 g of sodium alginate dissolved in 50 mL of phosphate buffered saline solution was mixed with different concentrations (1% (0.5 g), 2% (1 g), 3% (1.5 g), and 4% (2 g)) of gelatin, denoted as GBH-1, GBH-2, GBH-3, and GBH-4, respectively. The properties of the investigated hydrogels were characterized by contact angle goniometer, rheometer, and bioprinter. In addition, the hydrogel with a proper concentration was adopted as a cell-laden bioink to conduct cell viability testing (before and after bioprinting) using Live/Dead assay and immunofluorescence staining with a human corneal fibroblast cell line. The analytical results indicated that the GBH-2 hydrogel exhibited the lowest loss rate of contact angle (28%) and similar rheological performance as compared with other investigated hydrogels and the control group. Printability results also showed that the average wire diameter of the GBH-2 bioink (0.84 ± 0.02 mm (*** p < 0.001)) post-printing was similar to that of the control group (0.79 ± 0.05 mm). Moreover, a cell scaffold could be fabricated from the GBH-2 bioink and retained its shape integrity for 24 h post-printing. For bioprinting evaluation, it demonstrated that the GBH-2 bioink possessed well viability (>70%) of the human corneal fibroblast cell after seven days of printing under an ideal printing parameter combination (0.4 mm of inner diameter needle, 0.8 bar of printing pressure, and 25 °C of printing temperature). Therefore, the present study suggests that the GBH-2 hydrogel could be developed as a potential cell-laden bioink to print a cell scaffold with biocompatibility and structural integrity for soft tissues such as skin, cornea, nerve, and blood vessel regeneration applications.
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16
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Structured Data Storage for Data-Driven Process Optimisation in Bioprinting. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12157728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Bioprinting is a method to fabricate 3D models that mimic tissue. Future fields of application might be in pharmaceutical or medical context. As the number of applicants might vary between only one patient to manufacturing tissue for high-throughput drug screening, designing a process will necessitate a high degree of flexibility, robustness, as well as comprehensive monitoring. To enable quality by design process optimisation for future application, establishing systematic data storage routines suitable for automated analytical tools is highly desirable as a first step. This manuscript introduces a workflow for process design, documentation within an electronic lab notebook and monitoring to supervise the product quality over time or at different locations. Lab notes, analytical data and corresponding metadata are stored in a systematic hierarchy within the research data infrastructure Kadi4Mat, which allows for continuous, flexible data structuring and access management. To support the experimental and analytical workflow, additional features were implemented to enhance and build upon the functionality provided by Kadi4Mat, including browser-based file previews and a Python tool for the combined filtering and extraction of data. The structured research data management with Kadi4Mat enables retrospective data grouping and usage by process analytical technology tools connecting individual analysis software to machine-readable data exchange formats.
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17
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Gretzinger S, Schmieg B, Guthausen G, Hubbuch J. Virtual Reality as Tool for Bioprinting Quality Inspection: A Proof of Principle. Front Bioeng Biotechnol 2022; 10:895842. [PMID: 35757809 PMCID: PMC9218671 DOI: 10.3389/fbioe.2022.895842] [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: 03/14/2022] [Accepted: 05/06/2022] [Indexed: 11/13/2022] Open
Abstract
As virtual reality (VR) has drastically evolved over the past few years, the field of applications of VR flourished way beyond the gaming industry. While commercial VR solutions might be available, there is a need to develop a workflow for specific applications. Bioprinting represents such an example. Here, complex 3D data is generated and needs to be visualized in the context of quality control. We demonstrate that the transfer to a commercially available VR software is possible by introducing an optimized workflow. In the present work, we developed a workflow for the visualization of the critical quality attribute (cQA) cell distribution in bioprinted (extrusion-based) samples in VR. The cQA cell distribution is directly influenced by the pre-processing step mixing of cell material in the bioink. Magnetic Resonance Imaging (MRI) was used as an analytical tool to generate spatially resolved 2.5 and 3D data of the bioprinted objects. A sample with poor quality in respect of the cQA cell distribution was identified as its inhomogeneous cell distribution could be displayed spatially resolved in VR. The described workflow facilitates the usage of VR as a tool for quality inspection in the field of bioprinting and represents a powerful tool for visualization of complex 3D MRI data.
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Affiliation(s)
- Sarah Gretzinger
- Institute of Functional Interfaces, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany.,Institute of Engineering in Life Sciences, Section IV: Molecular Separation Engineering, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
| | - Barbara Schmieg
- Institute of Functional Interfaces, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany.,Institute of Engineering in Life Sciences, Section IV: Molecular Separation Engineering, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
| | - Gisela Guthausen
- Institute of Mechanical Process Engineering and Mechanics, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany.,Engler Bunte Institute Water Chemistry and Technology, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
| | - Jürgen Hubbuch
- Institute of Functional Interfaces, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany.,Institute of Engineering in Life Sciences, Section IV: Molecular Separation Engineering, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
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18
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Shinkar K, Rhode K. Could 3D extrusion bioprinting serve to be a real alternative to organ transplantation in the future? ANNALS OF 3D PRINTED MEDICINE 2022. [DOI: 10.1016/j.stlm.2022.100066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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19
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Prendergast ME, Burdick JA. Computational Modeling and Experimental Characterization of Extrusion Printing into Suspension Baths. Adv Healthc Mater 2022; 11:e2101679. [PMID: 34699689 PMCID: PMC8986563 DOI: 10.1002/adhm.202101679] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Revised: 10/07/2021] [Indexed: 01/16/2023]
Abstract
The extrusion printing of inks into suspension baths is an exciting tool, as it allows the printing of diverse and soft hydrogel inks into 3D space without the need for layer-by-layer fabrication. However, this printing process is complex and there have been limited studies to experimentally and computationally characterize the process. In this work, hydrogel inks (i.e., gelatin methacrylamide (GelMA)), suspension baths (i.e., agarose, Carbopol), and the printing process are examined via rheological, computational, and experimental analyses. Rheological data on various hydrogel inks and suspension baths is utilized to develop computational printing simulations based on Carreau constitutive viscosity models of the printing of inks within suspension baths. These results are then compared to experimental outcomes using custom print designs where features such as needle translation speed, defined in this work as print speed, are varied and printed filament resolution is quantified. Results are then used to identify print parameters for the printing of a GelMA ink into a unique guest-host hyaluronic acid suspension bath. This work emphasizes the importance of key rheological properties and print parameters for suspension bath printing and provides a computational model and experimental tools that can be used to inform the selection of print settings.
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Affiliation(s)
- Margaret E Prendergast
- Department of Bioengineering, University of Pennsylvania, 210 South 33rd Street, Philadelphia, PA, 19104, USA
| | - Jason A Burdick
- Department of Bioengineering, University of Pennsylvania, 210 South 33rd Street, Philadelphia, PA, 19104, USA
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20
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Hegab R, Van Volkenburg T, Ohiri K, Sebeck N, Bessling S, Theodore M, Rossick K, Pellicore M, Benkoski J, Patrone J. Design of experiments approach to developing a robust ink for bioprinting. Biomed Phys Eng Express 2022; 8. [PMID: 35290975 DOI: 10.1088/2057-1976/ac5de1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 03/15/2022] [Indexed: 11/11/2022]
Abstract
Despite advancements in tissue engineering, the methods used to generate three-dimensional (3D)in vitromodels for rapid screening and characterization studies remain time and labor intensive. Bioprinting offers an opportunity to offset these limitations by providing a scalable, high-throughput method with precise control over biomaterial scaffold and cellular deposition. However, the process of formulating bioinks can be complex in terms of balancing the mechanical integrity of a bioscaffold and viability of cells. One key factor, especially in alginate-based bioinks, is the rate of bioscaffold dissolution. It must allow cells to replace the bioscaffold with extracellular matrix (ECM), yet remain durable during extended tissue culture. This study uses a Design of Experiments (DoE) approach to understand the dependencies of multiple variables involved in the formulation and processing of an alginate-based bioink. The focus of the DoE was to understand the effects of hydrogel composition on bioink durability while maintaining cell viability. Three ingredients were varied in all: alginate, nanocellulose, and fibrinogen. Their effects on the bioink were then measured with respect to extrudability, strength, and stiffness as determined by dynamic mechanical analysis (DMA). The DoE demonstrated that mechanical integrity increased with increasing alginate concentration. In contrast, fibrinogen and nanofibril concentration had no statistically significant effect. The optimized ink containing fibroblasts was printable using multiple nozzle sizes while also supporting fibroblast cell viability. DMA characterization further showed that the composition of the cell culture medium did not modulate the degradation rate of the hydrogel. Ultimately, the study outlines a methodology for formulating a bioink that will result in robust bioscaffolds forin vitromodel development.
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Affiliation(s)
- Rachel Hegab
- The Johns Hopkins Applied Physics Laboratory, Laurel, MD, United States of America
| | - Tessa Van Volkenburg
- The Johns Hopkins Applied Physics Laboratory, Laurel, MD, United States of America
| | - Korine Ohiri
- The Johns Hopkins Applied Physics Laboratory, Laurel, MD, United States of America
| | - Natalie Sebeck
- The Johns Hopkins Applied Physics Laboratory, Laurel, MD, United States of America
| | - Seneca Bessling
- The Johns Hopkins Applied Physics Laboratory, Laurel, MD, United States of America
| | - Mellisa Theodore
- The Johns Hopkins Applied Physics Laboratory, Laurel, MD, United States of America
| | - Katelyn Rossick
- The Johns Hopkins Applied Physics Laboratory, Laurel, MD, United States of America
| | - Matthew Pellicore
- The Johns Hopkins Applied Physics Laboratory, Laurel, MD, United States of America
| | - Jason Benkoski
- The Johns Hopkins Applied Physics Laboratory, Laurel, MD, United States of America
| | - Julia Patrone
- The Johns Hopkins Applied Physics Laboratory, Laurel, MD, United States of America
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21
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Computer vision-aided bioprinting for bone research. Bone Res 2022; 10:21. [PMID: 35217642 PMCID: PMC8881598 DOI: 10.1038/s41413-022-00192-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 12/10/2021] [Accepted: 12/21/2021] [Indexed: 02/08/2023] Open
Abstract
Bioprinting is an emerging additive manufacturing technology that has enormous potential in bone implantation and repair. The insufficient accuracy of the shape of bioprinted parts is a primary clinical barrier that prevents widespread utilization of bioprinting, especially for bone design with high-resolution requirements. During the last five years, the use of computer vision for process control has been widely practiced in the manufacturing field. Computer vision can improve the performance of bioprinting for bone research with respect to various aspects, including accuracy, resolution, and cell survival rate. Hence, computer vision plays a substantial role in addressing the current defect problem in bioprinting for bone research. In this review, recent advances in the application of computer vision in bioprinting for bone research are summarized and categorized into three groups based on different defect types: bone scaffold process control, deep learning, and cell viability models. The collection of printing parameters, data processing, and feedback of bioprinting information, which ultimately improves printing capabilities, are further discussed. We envision that computer vision may offer opportunities to accelerate bioprinting development and provide a new perception for bone research.
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22
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Smart Bioinks for the Printing of Human Tissue Models. Biomolecules 2022; 12:biom12010141. [PMID: 35053289 PMCID: PMC8773823 DOI: 10.3390/biom12010141] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 01/05/2022] [Accepted: 01/13/2022] [Indexed: 12/11/2022] Open
Abstract
3D bioprinting has tremendous potential to revolutionize the field of regenerative medicine by automating the process of tissue engineering. A significant number of new and advanced bioprinting technologies have been developed in recent years, enabling the generation of increasingly accurate models of human tissues both in the healthy and diseased state. Accordingly, this technology has generated a demand for smart bioinks that can enable the rapid and efficient generation of human bioprinted tissues that accurately recapitulate the properties of the same tissue found in vivo. Here, we define smart bioinks as those that provide controlled release of factors in response to stimuli or combine multiple materials to yield novel properties for the bioprinting of human tissues. This perspective piece reviews the existing literature and examines the potential for the incorporation of micro and nanotechnologies into bioinks to enhance their properties. It also discusses avenues for future work in this cutting-edge field.
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23
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Sauty B, Santesarti G, Fleischhammer T, Lindner P, Lavrentieva A, Pepelanova I, Marino M. Enabling Technologies for Obtaining Desired Stiffness Gradients in GelMA Hydrogels Constructs. MACROMOL CHEM PHYS 2021. [DOI: 10.1002/macp.202100326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Bastien Sauty
- Department of Mechanical Engineering ENS Paris Saclay 4 avenue des sciences Gif‐sur‐Yvette 91190 France
| | - Gianluca Santesarti
- Department of Civil Engineering and Computer Science University of Rome Tor Vergata Via del Politecnico 1 Rome 00133 Italy
| | - Tabea Fleischhammer
- Institute of Technical Chemistry Leibniz University of Hannover Callinstrasse 5 Hannover 30167 Germany
| | - Patrick Lindner
- Institute of Technical Chemistry Leibniz University of Hannover Callinstrasse 5 Hannover 30167 Germany
| | - Antonina Lavrentieva
- Institute of Technical Chemistry Leibniz University of Hannover Callinstrasse 5 Hannover 30167 Germany
| | - Iliyana Pepelanova
- Institute of Technical Chemistry Leibniz University of Hannover Callinstrasse 5 Hannover 30167 Germany
| | - Michele Marino
- Department of Civil Engineering and Computer Science University of Rome Tor Vergata Via del Politecnico 1 Rome 00133 Italy
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24
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Pössl A, Hartzke D, Schlupp P, Runkel FE. Calculation of Mass Transfer and Cell-Specific Consumption Rates to Improve Cell Viability in Bioink Tissue Constructs. MATERIALS 2021; 14:ma14164387. [PMID: 34442913 PMCID: PMC8401414 DOI: 10.3390/ma14164387] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 07/30/2021] [Accepted: 08/02/2021] [Indexed: 12/22/2022]
Abstract
Biofabrication methods such as extrusion-based bioprinting allow the manufacture of cell-laden structures for cell therapy, but it is important to provide a sufficient number of embedded cells for the replacement of lost functional tissues. To address this issue, we investigated mass transfer rates across a bioink hydrogel for the essential nutrients glucose and glutamine, their metabolites lactate and ammonia, the electron acceptor oxygen, and the model protein bovine serum albumin. Diffusion coefficients were calculated for these substances at two temperatures. We could confirm that diffusion depends on the molecular volume of the substances if the bioink has a high content of polymers. The analysis of pancreatic 1.1B4 β-cells revealed that the nitrogen source glutamine is a limiting nutrient for homeostasis during cultivation. Taking the consumption rates of 1.1B4 β-cells into account during cultivation, we were able to calculate the cell numbers that can be adequately supplied by the cell culture medium and nutrients in the blood using a model tissue construct. For blood-like conditions, a maximum of ~106 cells·mL−1 was suitable for the cell-laden construct, as a function of the diffused substrate and cell consumption rate for a given geometry. We found that oxygen and glutamine were the limiting nutrients in our model.
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Affiliation(s)
- Axel Pössl
- Department of Life Science Engineering, Institute of Bioprocess Engineering and Pharmaceutical Technology, Technische Hochschule Mittelhessen—University of Applied Sciences, Wiesenstrasse 14, 35390 Giessen, Germany; (A.P.); (D.H.)
| | - David Hartzke
- Department of Life Science Engineering, Institute of Bioprocess Engineering and Pharmaceutical Technology, Technische Hochschule Mittelhessen—University of Applied Sciences, Wiesenstrasse 14, 35390 Giessen, Germany; (A.P.); (D.H.)
| | - Peggy Schlupp
- Department of Life Science Engineering, Institute of Bioprocess Engineering and Pharmaceutical Technology, Technische Hochschule Mittelhessen—University of Applied Sciences, Wiesenstrasse 14, 35390 Giessen, Germany; (A.P.); (D.H.)
- Correspondence: (P.S.); (F.E.R.)
| | - Frank E. Runkel
- Department of Life Science Engineering, Institute of Bioprocess Engineering and Pharmaceutical Technology, Technische Hochschule Mittelhessen—University of Applied Sciences, Wiesenstrasse 14, 35390 Giessen, Germany; (A.P.); (D.H.)
- Department of Biology and Chemistry, Justus Liebig University, Ludwigstrasse 23, 35390 Giessen, Germany
- Department of Pharmaceutics and Biopharmaceutics, Philipps University, Robert-Koch-Strasse 4, 35037 Marburg, Germany
- Correspondence: (P.S.); (F.E.R.)
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Pharmaceutical electrospinning and 3D printing scaffold design for bone regeneration. Adv Drug Deliv Rev 2021; 174:504-534. [PMID: 33991588 DOI: 10.1016/j.addr.2021.05.007] [Citation(s) in RCA: 124] [Impact Index Per Article: 41.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 04/26/2021] [Accepted: 05/11/2021] [Indexed: 12/13/2022]
Abstract
Bone regenerative engineering provides a great platform for bone tissue regeneration covering cells, growth factors and other dynamic forces for fabricating scaffolds. Diversified biomaterials and their fabrication methods have emerged for fabricating patient specific bioactive scaffolds with controlled microstructures for bridging complex bone defects. The goal of this review is to summarize the points of scaffold design as well as applications for bone regeneration based on both electrospinning and 3D bioprinting. It first briefly introduces biological characteristics of bone regeneration and summarizes the applications of different types of material and the considerations for bone regeneration including polymers, ceramics, metals and composites. We then discuss electrospinning nanofibrous scaffold applied for the bone regenerative engineering with various properties, components and structures. Meanwhile, diverse design in the 3D bioprinting scaffolds for osteogenesis especially in the role of drug and bioactive factors delivery are assembled. Finally, we discuss challenges and future prospects in the development of electrospinning and 3D bioprinting for osteogenesis and prominent strategies and directions in future.
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