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Lan X, Boluk Y, Adesida AB. 3D Bioprinting of Hyaline Cartilage Using Nasal Chondrocytes. Ann Biomed Eng 2024; 52:1816-1834. [PMID: 36952145 DOI: 10.1007/s10439-023-03176-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2022] [Accepted: 02/22/2023] [Indexed: 03/24/2023]
Abstract
Due to the limited self-repair capacity of the hyaline cartilage, the repair of cartilage remains an unsolved clinical problem. Tissue engineering strategy with 3D bioprinting technique has emerged a new insight by providing patient's personalized cartilage grafts using autologous cells for hyaline cartilage repair and regeneration. In this review, we first summarized the intrinsic property of hyaline cartilage in both maxillofacial and orthopedic regions to establish the requirement for 3D bioprinting cartilage tissue. We then reviewed the literature and provided opinion pieces on the selection of bioprinters, bioink materials, and cell sources. This review aims to identify the current challenges for hyaline cartilage bioprinting and the directions for future clinical development in bioprinted hyaline cartilage.
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Affiliation(s)
- Xiaoyi Lan
- Department of Civil and Environmental Engineering, Faculty of Engineering, University of Alberta, Edmonton, AB, Canada
| | - Yaman Boluk
- Department of Civil and Environmental Engineering, Faculty of Engineering, University of Alberta, Edmonton, AB, Canada.
| | - Adetola B Adesida
- Department of Surgery, Divisions of Orthopedic Surgery & Surgical Research, Faculty of Medicine & Dentistry, Li Ka Shing Centre for Health Research Innovation, University of Alberta, Edmonton, AB, Canada.
- Department of Surgery, Division of Otolaryngology, Faculty of Medicine & Dentistry, Li Ka Shing Centre for Health Research Innovation, University of Alberta, Edmonton, AB, Canada.
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Rostamani H, Fakhraei O, Zamirinadaf N, Mahjour M. An overview of nasal cartilage bioprinting: from bench to bedside. JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 2024; 35:1273-1320. [PMID: 38441976 DOI: 10.1080/09205063.2024.2321636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2023] [Accepted: 02/08/2024] [Indexed: 03/07/2024]
Abstract
Nasal cartilage diseases and injuries are known as significant challenges in reconstructive medicine, affecting a substantial number of individuals worldwide. In recent years, the advent of three-dimensional (3D) bioprinting has emerged as a promising approach for nasal cartilage reconstruction, offering potential breakthroughs in the field of regenerative medicine. This paper provides an overview of the methods and challenges associated with 3D bioprinting technologies in the procedure of reconstructing nasal cartilage tissue. The process of 3D bioprinting entails generating a digital 3D model using biomedical imaging techniques and computer-aided design to integrate both internal and external scaffold features. Then, bioinks which consist of biomaterials, cell types, and bioactive chemicals, are applied to facilitate the precise layer-by-layer bioprinting of tissue-engineered scaffolds. After undergoing in vitro and in vivo experiments, this process results in the development of the physiologically functional integrity of the tissue. The advantages of 3D bioprinting encompass the ability to customize scaffold design, enabling the precise incorporation of pore shape, size, and porosity, as well as the utilization of patient-specific cells to enhance compatibility. However, various challenges should be considered, including the optimization of biomaterials, ensuring adequate cell viability and differentiation, achieving seamless integration with the host tissue, and navigating regulatory attention. Although numerous studies have demonstrated the potential of 3D bioprinting in the rebuilding of such soft tissues, this paper covers various aspects of the bioprinted tissues to provide insights for the future development of repair techniques appropriate for clinical use.
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Affiliation(s)
- Hosein Rostamani
- Department of Biomedical Engineering, Mashhad Branch, Islamic Azad University, Mashhad, Iran
| | - Omid Fakhraei
- Department of Biomedical Engineering, Mashhad Branch, Islamic Azad University, Mashhad, Iran
| | - Niloufar Zamirinadaf
- Department of Biomedical Engineering, Mashhad Branch, Islamic Azad University, Mashhad, Iran
| | - Mehran Mahjour
- Department of Biomedical Engineering, Mashhad Branch, Islamic Azad University, Mashhad, Iran
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Kim H, Dutta SD, Randhawa A, Patil TV, Ganguly K, Acharya R, Lee J, Park H, Lim KT. Recent advances and biomedical application of 3D printed nanocellulose-based adhesive hydrogels: A review. Int J Biol Macromol 2024; 264:130732. [PMID: 38479658 DOI: 10.1016/j.ijbiomac.2024.130732] [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: 12/15/2023] [Revised: 03/04/2024] [Accepted: 03/06/2024] [Indexed: 03/17/2024]
Abstract
Nanocellulose-based tissue adhesives show promise for achieving rapid hemostasis and effective wound healing. Conventional methods, such as sutures and staples, have limitations, prompting the exploration of bioadhesives for direct wound adhesion and minimal tissue damage. Nanocellulose, a hydrolysis product of cellulose, exhibits superior biocompatibility and multifunctional properties, gaining interest as a base material for bioadhesive development. This study explores the potential of nanocellulose-based adhesives for hemostasis and wound healing using 3D printing techniques. Nanocellulose enables the creation of biodegradable adhesives with minimal adverse effects and opens avenues for advanced wound healing and complex tissue regeneration, such as skin, blood vessels, lungs, cartilage, and muscle. This study reviews recent trends in various nanocellulose-based 3D printed hydrogel patches for tissue engineering applications. The review also introduces various types of nanocellulose and their synthesis, surface modification, and bioadhesive fabrication techniques via 3D printing for smart wound healing.
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Affiliation(s)
- Hojin Kim
- Department of Biosystems Engineering, Kangwon University, Chuncheon 24341, Gangwon-do, Republic of Korea; Interdisciplinary Program in Smart Agriculture, Kangwon National University, Chuncheon 24341, Gangwon-do, Republic of Korea
| | - Sayan Deb Dutta
- Department of Biosystems Engineering, Kangwon University, Chuncheon 24341, Gangwon-do, Republic of Korea; Institute of Forest Science, Kangwon National University, Chuncheon 24341, Gangwon-do, Republic of Korea
| | - Aayushi Randhawa
- Department of Biosystems Engineering, Kangwon University, Chuncheon 24341, Gangwon-do, Republic of Korea; Interdisciplinary Program in Smart Agriculture, Kangwon National University, Chuncheon 24341, Gangwon-do, Republic of Korea
| | - Tejal V Patil
- Department of Biosystems Engineering, Kangwon University, Chuncheon 24341, Gangwon-do, Republic of Korea; Interdisciplinary Program in Smart Agriculture, Kangwon National University, Chuncheon 24341, Gangwon-do, Republic of Korea
| | - Keya Ganguly
- Department of Biosystems Engineering, Kangwon University, Chuncheon 24341, Gangwon-do, Republic of Korea
| | - Rumi Acharya
- Department of Biosystems Engineering, Kangwon University, Chuncheon 24341, Gangwon-do, Republic of Korea; Interdisciplinary Program in Smart Agriculture, Kangwon National University, Chuncheon 24341, Gangwon-do, Republic of Korea
| | - Jieun Lee
- Department of Biosystems Engineering, Kangwon University, Chuncheon 24341, Gangwon-do, Republic of Korea; Interdisciplinary Program in Smart Agriculture, Kangwon National University, Chuncheon 24341, Gangwon-do, Republic of Korea
| | - Hyeonseo Park
- Department of Biosystems Engineering, Kangwon University, Chuncheon 24341, Gangwon-do, Republic of Korea; Interdisciplinary Program in Smart Agriculture, Kangwon National University, Chuncheon 24341, Gangwon-do, Republic of Korea
| | - Ki-Taek Lim
- Department of Biosystems Engineering, Kangwon University, Chuncheon 24341, Gangwon-do, Republic of Korea; Interdisciplinary Program in Smart Agriculture, Kangwon National University, Chuncheon 24341, Gangwon-do, Republic of Korea; Institute of Forest Science, Kangwon National University, Chuncheon 24341, Gangwon-do, Republic of Korea.
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Abbadessa A, Ronca A, Salerno A. Integrating bioprinting, cell therapies and drug delivery towards in vivo regeneration of cartilage, bone and osteochondral tissue. Drug Deliv Transl Res 2024; 14:858-894. [PMID: 37882983 DOI: 10.1007/s13346-023-01437-1] [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] [Accepted: 09/18/2023] [Indexed: 10/27/2023]
Abstract
The biological and biomechanical functions of cartilage, bone and osteochondral tissue are naturally orchestrated by a complex crosstalk between zonally dependent cells and extracellular matrix components. In fact, this crosstalk involves biomechanical signals and the release of biochemical cues that direct cell fate and regulate tissue morphogenesis and remodelling in vivo. Three-dimensional bioprinting introduced a paradigm shift in tissue engineering and regenerative medicine, since it allows to mimic native tissue anisotropy introducing compositional and architectural gradients. Moreover, the growing synergy between bioprinting and drug delivery may enable to replicate cell/extracellular matrix reciprocity and dynamics by the careful control of the spatial and temporal patterning of bioactive cues. Although significant advances have been made in this direction, unmet challenges and open research questions persist. These include, among others, the optimization of scaffold zonality and architectural features; the preservation of the bioactivity of loaded active molecules, as well as their spatio-temporal release; the in vitro scaffold maturation prior to implantation; the pros and cons of each animal model and the graft-defect mismatch; and the in vivo non-invasive monitoring of new tissue formation. This work critically reviews these aspects and reveals the state of the art of using three-dimensional bioprinting, and its synergy with drug delivery technologies, to pattern the distribution of cells and/or active molecules in cartilage, bone and osteochondral engineered tissues. Most notably, this work focuses on approaches, technologies and biomaterials that are currently under in vivo investigations, as these give important insights on scaffold performance at the implantation site and its interaction/integration with surrounding tissues.
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Affiliation(s)
- Anna Abbadessa
- Center for Research in Molecular Medicine and Chronic Diseases (CiMUS), IDIS Research Institute, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain.
- Department of Pharmacology, Pharmacy and Pharmaceutical Technology, School of Pharmacy, Universidade de Santiago de Compostela, Campus Vida, Santiago de Compostela, Spain.
| | - Alfredo Ronca
- Institute of Polymers, Composites and Biomaterials, National Research Council, 80125, Naples, Italy.
| | - Aurelio Salerno
- Department of Chemical, Materials and Production Engineering, University of Naples Federico II, 80125, Naples, Italy.
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Abadpour S, Niemi EM, Orrhult LS, Hermanns C, de Vries R, Nogueira LP, Haugen HJ, Josefsen D, Krauss S, Gatenholm P, van Apeldoorn A, Scholz H. Adipose-Derived Stromal Cells Preserve Pancreatic Islet Function in a Transplantable 3D Bioprinted Scaffold. Adv Healthc Mater 2023; 12:e2300640. [PMID: 37781993 DOI: 10.1002/adhm.202300640] [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: 02/27/2023] [Revised: 09/07/2023] [Indexed: 10/03/2023]
Abstract
Intra-portal islet transplantation is currently the only clinically approved beta cell replacement therapy, but its outcome is hindered by limited cell survival due to a multifactorial reaction against the allogeneic tissue in liver. Adipose-derived stromal cells (ASCs) can potentially improve the islet micro-environment by their immunomodulatory action. The challenge is to combine both islets and ASCs in a relatively easy and consistent long-term manner in a deliverable scaffold. Manufacturing the 3D bioprinted double-layered scaffolds with primary islets and ASCs using a mix of alginate/nanofibrillated cellulose (NFC) bioink is reported. The diffusion properties of the bioink and the supportive effect of human ASCs on islet viability, glucose sensing, insulin secretion, and reducing the secretion of pro-inflammatory cytokines are demonstrated. Diabetic mice transplanted with islet-ASC scaffolds reach normoglycemia seven days post-transplantation with no significant difference between this group and the group received islets under the kidney capsules. In addition, animals transplanted with islet-ASC scaffolds stay normoglycemic and show elevated levels of C-peptide compared to mice transplanted with islet-only scaffolds. The data present a functional 3D bioprinted scaffold for islets and ASCs transplanted to the extrahepatic site and suggest a possible role of ASCs on improving the islet micro-environment.
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Affiliation(s)
- Shadab Abadpour
- Department of Transplant Medicine, Oslo University Hospital, Oslo, 0372, Norway
- Institute for Surgical Research, Oslo University Hospital, Oslo, 0372, Norway
- Hybrid Technology Hub - Centre of Excellence, Institute of Basic Medical Sciences, University of Oslo, Oslo, 0372, Norway
| | - Essi M Niemi
- Institute for Surgical Research, Oslo University Hospital, Oslo, 0372, Norway
- Hybrid Technology Hub - Centre of Excellence, Institute of Basic Medical Sciences, University of Oslo, Oslo, 0372, Norway
- Department of Vascular Surgery, Aker Hospital, Oslo University Hospital, Oslo, 0586, Norway
| | - Linnea Strid Orrhult
- 3D Bioprinting Center, WWSC, Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Gothenburg, 41296, Sweden
| | - Carolin Hermanns
- MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, Maastricht, 6229, The Netherlands
| | - Rick de Vries
- MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, Maastricht, 6229, The Netherlands
| | | | | | - Dag Josefsen
- Section for Cellular Therapy, Radiumhospitalet, Oslo University Hospital, Oslo, 0379, Norway
| | - Stefan Krauss
- Hybrid Technology Hub - Centre of Excellence, Institute of Basic Medical Sciences, University of Oslo, Oslo, 0372, Norway
- Department of Immunology and Transfusion Medicine, Oslo University Hospital, Oslo, 0372, Norway
| | - Paul Gatenholm
- 3D Bioprinting Center, WWSC, Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Gothenburg, 41296, Sweden
- CELLHEAL AS, Sandvika, 1337, Norway
| | - Aart van Apeldoorn
- MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, Maastricht, 6229, The Netherlands
| | - Hanne Scholz
- Department of Transplant Medicine, Oslo University Hospital, Oslo, 0372, Norway
- Institute for Surgical Research, Oslo University Hospital, Oslo, 0372, Norway
- Hybrid Technology Hub - Centre of Excellence, Institute of Basic Medical Sciences, University of Oslo, Oslo, 0372, Norway
- Section for Cellular Therapy, Radiumhospitalet, Oslo University Hospital, Oslo, 0379, Norway
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Barbara Di Stefano A, Toia F, Urrata V, Trapani M, Montesano L, Cammarata E, Moschella F, Cordova A. Spheroids of adipose derived stem cells show their potential in differentiating towards the angiogenic lineage. Gene 2023:147578. [PMID: 37336277 DOI: 10.1016/j.gene.2023.147578] [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: 01/10/2023] [Revised: 05/29/2023] [Accepted: 06/14/2023] [Indexed: 06/21/2023]
Abstract
INTRODUCTION Adipose derived stem cells (ASCs) are a mesenchymal stem cell population of great scientific interest due to their abundance and easiness in obtaining them from adipose tissue. Recently, several techniques for three dimensional (3D) ASCs cultivation have been developed to obtain spheroids of adipose stem cells (SASCs). It was already proved that ASCs are able to differentiate towards the endothelial lineage thus, for the first time, we investigated the ability of our 3D SASCs to differentiate endothelially and the effects of not differentiated SASC secreted factors on specific cultured cells. MATERIALS AND METHODS SASCs were differentiated with a specific medium towards endothelial lineage. Cell viability, gene and protein expression of typical endothelial markers were analysed. Moreover, tube formation, wound healing and migration assays were performed to investigate the ability in migration and angiogenic networks formation of endothelially differentiated cells. SASCs secretome were also tested. RESULTS We showed the ability of SASCs to differentiate towards the endothelial lineage with an increase in cell viability of 15-fold and 8-fold at 14 and 21 days of differentiation respectively. Moreover, we showed the upregulation of VEGF-A and CD31 mRNAs of 9-fold and 1300-fold in SASCs endothelially differentiated cells, whilst protein expression was different. VEGF-A protein expression was upregulated whilst CD31 protein wasn't translated. In addition, ICAM1, VCAM1, ANGPT1, CD62E protein levels remain unchanged. SASCs were also able to organize themselves into angiogenic networks after 7 days of culturing themon ECMatrix. Secreted factors from undifferentiated 3D SASCs acted in a paracrine way on HUVECs and endothelially differentiated ASCs seeded on ECMatrix to promote angiogenic events. CONCLUSIONS SASCs, thanks to their multilineage differentiation potential, also possess the ability to differentiate towards endothelial lineage and to organize themselves into angiogenic networks. Moreover, they are able to promote angiogenesis through their secreted factors.
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Affiliation(s)
- Anna Barbara Di Stefano
- BIOPLAST-Laboratory of BIOlogy and Regenerative Medicine-PLASTic Surgery, Plastic and Reconstructive Surgery Section, Department of Surgical, Oncological and Oral Sciences, University of Palermo, 90127 Palermo, Italy.
| | - Francesca Toia
- BIOPLAST-Laboratory of BIOlogy and Regenerative Medicine-PLASTic Surgery, Plastic and Reconstructive Surgery Section, Department of Surgical, Oncological and Oral Sciences, University of Palermo, 90127 Palermo, Italy; Section of Plastic and Reconstructive Surgery. Department of Surgical, Oncological and Oral Sciences, University of Palermo, Palermo, Italy; Plastic and Reconstructive Unit, Department of D.A.I. Chirurgico, Azienda Ospedaliera Universitaria Policlinico "Paolo Giaccone", 90127, Palermo, Italy
| | - Valentina Urrata
- BIOPLAST-Laboratory of BIOlogy and Regenerative Medicine-PLASTic Surgery, Plastic and Reconstructive Surgery Section, Department of Surgical, Oncological and Oral Sciences, University of Palermo, 90127 Palermo, Italy
| | - Marco Trapani
- BIOPLAST-Laboratory of BIOlogy and Regenerative Medicine-PLASTic Surgery, Plastic and Reconstructive Surgery Section, Department of Surgical, Oncological and Oral Sciences, University of Palermo, 90127 Palermo, Italy
| | - Luigi Montesano
- Section of Plastic and Reconstructive Surgery. Department of Surgical, Oncological and Oral Sciences, University of Palermo, Palermo, Italy; Plastic and Reconstructive Unit, Department of D.A.I. Chirurgico, Azienda Ospedaliera Universitaria Policlinico "Paolo Giaccone", 90127, Palermo, Italy
| | - Emanuele Cammarata
- Section of Plastic and Reconstructive Surgery. Department of Surgical, Oncological and Oral Sciences, University of Palermo, Palermo, Italy; Plastic and Reconstructive Unit, Department of D.A.I. Chirurgico, Azienda Ospedaliera Universitaria Policlinico "Paolo Giaccone", 90127, Palermo, Italy
| | - Francesco Moschella
- BIOPLAST-Laboratory of BIOlogy and Regenerative Medicine-PLASTic Surgery, Plastic and Reconstructive Surgery Section, Department of Surgical, Oncological and Oral Sciences, University of Palermo, 90127 Palermo, Italy
| | - Adriana Cordova
- BIOPLAST-Laboratory of BIOlogy and Regenerative Medicine-PLASTic Surgery, Plastic and Reconstructive Surgery Section, Department of Surgical, Oncological and Oral Sciences, University of Palermo, 90127 Palermo, Italy; Section of Plastic and Reconstructive Surgery. Department of Surgical, Oncological and Oral Sciences, University of Palermo, Palermo, Italy; Plastic and Reconstructive Unit, Department of D.A.I. Chirurgico, Azienda Ospedaliera Universitaria Policlinico "Paolo Giaccone", 90127, Palermo, Italy
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Masek A, Kosmalska A. Technological limitations in obtaining and using cellulose biocomposites. Front Bioeng Biotechnol 2022; 10:912052. [PMID: 36061440 PMCID: PMC9429818 DOI: 10.3389/fbioe.2022.912052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Accepted: 07/21/2022] [Indexed: 11/13/2022] Open
Abstract
Among the many possible types of polymer composite materials, the most important are nanocomposites and biocomposites, which have received tremendous attention in recent years due to their unique properties. The fundamental benefits of using biocomposites as alternative materials to “petroleum-based” products are certainly shaping current development trends and setting directions for future research and applications of polymer composites. A dynamic growth of the production and sale of biocomposites is observed in the global market, which results not only from the growing interest and demand for this type of materials, but also due to the fact that for the developed and modified, thus improved materials, the area of their application is constantly expanding. Already today, polymer composites with plant raw materials are used in various sectors of the economy. In particular, this concerns the automotive and construction industries, as well as widely understood packaging. Bacterial cellulose, for example, also known as bionanocellulose, as a natural polymer with specific and unique properties, has been used extensively,primarily in numerous medical applications. Intensive research is also being carried out into composites with natural fibres composed mainly of organic compounds such as cellulose, hemicellulose and lignin. However, three aspects seem to be associated with the popularisation of biopolymers: performance, processing and cost. This article provides a brief overview of the topic under discussion. What can be the technological limitations considering the methods of obtaining polymer composites with the use of plant filler and the influence on their properties? What properties of cellulose constitute an important issue from the point of view of its applicability in polymers, in the context of compatibility with the polymer matrix and processability? What can be the ways of changing these properties through modifications, which may be crucial from the point of view of the development directions of biopolymers and bioplastics, whose further new applications will be related, among others, to the enhancement of properties? There still seems to be considerable potential to improve the cellulose material composites being produced, as well as to improve the efficiency of their manufacturing. Nevertheless, the material still needs to be well optimized before it can replace conventional materials at the industrial level in the near future. Typically, various studies discuss their comparison in terms of production, properties and highly demanding applications of plant or bacterial nanocellulose. Usually, aspects of each are described separately in the literature. In the present review, several important data are gathered in one place, providing a basis for comparing the types of cellulose described. On the one hand, this comparison aims to demonstrate the advantage of bacterial cellulose over plant cellulose, due to environmental protection and its unique properties. On the other hand, it aims to prepare a more comprehensive point of view that can objectively help in deciding which cellulosic raw material may be more suitable for a particular purpose, bacterial cellulose or plant cellulose.
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Apelgren P, Sämfors S, Säljö K, Mölne J, Gatenholm P, Troedsson C, Thompson EM, Kölby L. Biomaterial and biocompatibility evaluation of tunicate nanocellulose for tissue engineering. BIOMATERIALS ADVANCES 2022; 137:212828. [PMID: 35929261 DOI: 10.1016/j.bioadv.2022.212828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 04/06/2022] [Accepted: 04/21/2022] [Indexed: 06/15/2023]
Abstract
Extracellular matrix fibril components, such as collagen, are crucial for the structural properties of several tissues and organs. Tunicate-derived cellulose nanofibrils (TNC) combined with living cells could become the next gold standard for cartilage and soft-tissue repair, as TNC fibrils present similar dimensions to collagen, feasible industrial production, and chemically straightforward and cost-efficient extraction procedures. In this study, we characterized the physical properties of TNC derived from aquaculture production in Norwegian fjords and evaluated its biocompatibility regarding induction of an inflammatory response and foreign-body reactions in a Wistar rat model. Additionally, histologic and immunohistochemical analyses were performed for comparison with expanded polytetrafluoroethylene (ePTFE) as a control. The average length of the TNC as determined by atomic force microscopy was tunable from 3 μm to 2.4 μm via selection of a various number of passages through a microfluidizer, and rheologic analysis showed that the TNC hydrogels were highly shear-thinning and with a viscosity dependent on fibril length and concentration. As a bioink, TNC exhibited excellent rheological and printability properties, with constructs capable of being printed with high resolution and fidelity. We found that post-print cross-linking with alginate stabilized the construct shape and texture, which increased its ease of handling during surgery. Moreover, after 30 days in vivo, the constructs showed a highly-preserved shape and fidelity of the grid holes, with these characteristics preserved after 90 days and with no signs of necrosis, infection, acute inflammation, invasion of neutrophil granulocytes, or extensive fibrosis. Furthermore, we observed a moderate foreign-body reaction involving macrophages, lymphocytes, and giant cells in both the TNC constructs and PTFE controls, although TNC was considered a non-irritant biomaterial according to ISO 10993-6 as compared with ePTFE. These findings represent a milestone for future clinical application of TNC scaffolds for tissue repair. One sentence summary: In this study, the mechanical properties of tunicate nanocellulose are superior to nanocellulose extracted from other sources, and the biocompatibility is comparable to that of ePTFE.
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Affiliation(s)
- Peter Apelgren
- Department of Plastic Surgery, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden; Region Västra Götaland, Sahlgrenska University Hospital, Department of Plastic Surgery, Gothenburg, Sweden
| | - Sanna Sämfors
- 3D Bioprinting Centre, Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Gothenburg, Sweden
| | - Karin Säljö
- Department of Plastic Surgery, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden; Region Västra Götaland, Sahlgrenska University Hospital, Department of Plastic Surgery, Gothenburg, Sweden
| | - Johan Mölne
- Department of Pathology, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Paul Gatenholm
- 3D Bioprinting Centre, Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Gothenburg, Sweden
| | | | - Eric M Thompson
- Ocean TuniCell AS, N-5258 Blomsterdalen, Norway; Department of Biological Sciences, University of Bergen, N-5006 Bergen, Norway
| | - Lars Kölby
- Department of Plastic Surgery, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden; Region Västra Götaland, Sahlgrenska University Hospital, Department of Plastic Surgery, Gothenburg, Sweden.
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