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Niknezhad SV, Mehrali M, Khorasgani FR, Heidari R, Kadumudi FB, Golafshan N, Castilho M, Pennisi CP, Hasany M, Jahanshahi M, Mehrali M, Ghasemi Y, Azarpira N, Andresen TL, Dolatshahi-Pirouz A. Enhancing volumetric muscle loss (VML) recovery in a rat model using super durable hydrogels derived from bacteria. Bioact Mater 2024; 38:540-558. [PMID: 38872731 PMCID: PMC11170101 DOI: 10.1016/j.bioactmat.2024.04.006] [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: 10/10/2023] [Revised: 03/12/2024] [Accepted: 04/08/2024] [Indexed: 06/15/2024] Open
Abstract
Bacteria can be programmed to deliver natural materials with defined biological and mechanical properties for controlling cell growth and differentiation. Here, we present an elastic, resilient and bioactive polysaccharide derived from the extracellular matrix of Pantoea sp. BCCS 001. Specifically, it was methacrylated to generate a new photo crosslinkable hydrogel that we coined Pantoan Methacrylate or put simply PAMA. We have used it for the first time as a tissue engineering hydrogel to treat VML injuries in rats. The crosslinked PAMA hydrogel was super elastic with a recovery nearing 100 %, while mimicking the mechanical stiffness of native muscle. After inclusion of thiolated gelatin via a Michaelis reaction with acrylate groups on PAMA we could also guide muscle progenitor cells into fused and aligned tubes - something reminiscent of mature muscle cells. These results were complemented by sarcomeric alpha-actinin immunostaining studies. Importantly, the implanted hydrogels exhibited almost 2-fold more muscle formation and 50 % less fibrous tissue formation compared to untreated rat groups. In vivo inflammation and toxicity assays likewise gave rise to positive results confirming the biocompatibility of this new biomaterial system. Overall, our results demonstrate that programmable polysaccharides derived from bacteria can be used to further advance the field of tissue engineering. In greater detail, they could in the foreseeable future be used in practical therapies against VML.
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Affiliation(s)
- Seyyed Vahid Niknezhad
- Burn and Wound Healing Research Center, Shiraz University of Medical Sciences, Shiraz, 71987-54361, Iran
| | - Mehdi Mehrali
- Department of Civil and Mechanical Engineering, Technical University of Denmark, 2800, Kgs Lyngby, Denmark
| | | | - Reza Heidari
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Firoz Babu Kadumudi
- Department of Health Technology, Technical University of Denmark, 2800, Kongens Lyngby, Denmark
| | - Nasim Golafshan
- Department of Health Technology, Technical University of Denmark, 2800, Kongens Lyngby, Denmark
- Department of Orthopaedics, University Medical Center Utrecht, Utrecht, 3584 CX, the Netherlands
| | - Miguel Castilho
- Department of Biomedical Engineering, Eindhoven University of Technology, the Netherlands
- Institute for Complex Molecular Systems, Eindhoven University of Technology, Eindhoven, the Netherlands
| | - Cristian Pablo Pennisi
- Regenerative Medicine Group, Department of Health Science and Technology, Aalborg University, 9260, Gistrup, Denmark
| | - Masoud Hasany
- Department of Civil and Mechanical Engineering, Technical University of Denmark, 2800, Kgs Lyngby, Denmark
| | | | - Mohammad Mehrali
- Faculty of Engineering Technology, Department of Thermal and Fluid Engineering (TFE), University of Twente, 7500 AE, Enschede, the Netherlands
| | - Younes Ghasemi
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Negar Azarpira
- Transplant Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Thomas L. Andresen
- Department of Health Technology, Section for Biotherapeutic Engineering and Drug Targeting, Technical University of Denmark, 2800, Kongens Lyngby, Denmark
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Liu Y, Gao Z, Yu X, Lin W, Lian H, Meng Z. Recent Advances in the Fabrication and Performance Optimization of Polyvinyl Alcohol Based Vascular Grafts. Macromol Biosci 2024:e2400093. [PMID: 38801024 DOI: 10.1002/mabi.202400093] [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: 03/01/2024] [Revised: 05/11/2024] [Indexed: 05/29/2024]
Abstract
Cardiovascular disease is one of the diseases with the highest morbidity and mortality rates worldwide, and coronary artery bypass grafting (CABG) is a fast and effective treatment. More researchers are investigating in artificial blood vessels due to the limitations of autologous blood vessels. Despite the availability of large-diameter vascular grafts (Ø > 6 mm) for clinical use, small-diameter vascular grafts (Ø < 6 mm) have been a challenge for researchers to overcome in recent years. Vascular grafts made of polyvinyl alcohol (PVA) and PVA-based composites have excellent biocompatibility and mechanical characteristics. In order to gain a clearer and more specific understanding of the progress in PVA vascular graft research, particularly regarding the preparation methods, principles, and functionality of PVA vascular graft, this article discusses the mechanical properties, biocompatibility, blood compatibility, and other properties of PVA vascular graft prepared or enhanced with different blends using various techniques that mimic natural blood vessels. The findings reveal the feasibility and promising potential of PVA or PVA-based composite materials as vascular grafts.
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Affiliation(s)
- Yixuan Liu
- School of Medical Devices, Shenyang Pharmaceutical University, Shenyang, 110016, China
| | - Zichun Gao
- School of Medical Devices, Shenyang Pharmaceutical University, Shenyang, 110016, China
| | - Xinrong Yu
- School of Medical Devices, Shenyang Pharmaceutical University, Shenyang, 110016, China
| | - Wenjiao Lin
- Qingmao Technology (Shenzhen) Co., LTD, Shenzhen, China
| | - He Lian
- School of Medical Devices, Shenyang Pharmaceutical University, Shenyang, 110016, China
| | - Zhaoxu Meng
- School of Medical Devices, Shenyang Pharmaceutical University, Shenyang, 110016, China
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3
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Li Y, Song W, Kong L, He Y, Li H. Injectable and Microporous Microgel-Fiber Granular Hydrogel Loaded with Bioglass and siRNA for Promoting Diabetic Wound Healing. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2309599. [PMID: 38054634 DOI: 10.1002/smll.202309599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 11/23/2023] [Indexed: 12/07/2023]
Abstract
Injectable hydrogels find extensive application in the treatment of diabetic wound healing. However, traditional bulk hydrogels are significantly limited due to their nano-porous structure, which obstructs cell migration and tissue infiltration. Moreover, regulating inflammation and matrix metalloproteinase -9 (MMP-9) expression in diabetic wounds is crucial for enhancing wound healing. This study marks the first instance of introducing an efficient, scalable, and simple method for producing microfiber-gel granules encapsulating bioceramics powders. Utilizing this method, an injectable microporous granular microgel-fiber hydrogel (MFgel) is successfully developed by assembling microgel-fibers made from hyaluronic acid (HA) and sodium alginate (SA) loaded with small interfering RNA (siRNA) and bioglass (BG) particles. Compared to traditional hydrogels (Tgel), MFgel possesses a highly interconnected network with micron-sized pores, demonstrating favorable properties for cell adhesion and penetration in in vitro experiments. Additionally, MFgel exhibits a higher compressive modulus and superior mechanical stability. When implanted subcutaneously in mice, MFgel promotes cellular and tissue infiltration, facilitating cell proliferation. Furthermore, when applied to skin defects in diabetic rats, MFgel not only effectively regulates inflammation and suppresses MMP-9 expression but also enhances angiogenesis and collagen deposition, thereby significantly accelerating diabetic wound healing. Taken together, this hydrogel possesses great potential in diabetic wound healing applications.
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Affiliation(s)
- Ying Li
- Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, School of Biomedical Engineering, Shanghai Jiao Tong University, 600 Yishan Road, Shanghai, 200233, China
| | - Wei Song
- Department of Orthopedic Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, 600 Yishan Road, Shanghai, 200233, China
| | - Lingzhi Kong
- Department of Orthopedic Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, 600 Yishan Road, Shanghai, 200233, China
| | - Yaohua He
- Department of Orthopedic Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, 600 Yishan Road, Shanghai, 200233, China
- Department of Orthopedic Surgery, Jinshan District Central Hospital affiliated to Shanghai University of Medicine & Health Sciences, Jinshan Branch of Shanghai Sixth People's Hospital, Shanghai, 201500, China
| | - Haiyan Li
- Chemical and Environment Engineering Department, School of Engineering, RMIT University, 124 La Trobe Street, Melbourne, VIC, 3001, Australia
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Fijalkowski M, Ali A, Qamer S, Coufal R, Adach K, Petrik S. Hybrid and Single-Component Flexible Aerogels for Biomedical Applications: A Review. Gels 2023; 10:4. [PMID: 38275842 PMCID: PMC10815221 DOI: 10.3390/gels10010004] [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: 11/03/2023] [Revised: 12/05/2023] [Accepted: 12/08/2023] [Indexed: 01/27/2024] Open
Abstract
The inherent disadvantages of traditional non-flexible aerogels, such as high fragility and moisture sensitivity, severely restrict their applications. To address these issues and make the aerogels efficient, especially for advanced medical applications, different techniques have been used to incorporate flexibility in aerogel materials. In recent years, a great boom in flexible aerogels has been observed, which has enabled them to be used in high-tech biomedical applications. The current study comprises a comprehensive review of the preparation techniques of pure polymeric-based hybrid and single-component aerogels and their use in biomedical applications. The biomedical applications of these hybrid aerogels will also be reviewed and discussed, where the flexible polymeric components in the aerogels provide the main contribution. The combination of highly controlled porosity, large internal surfaces, flexibility, and the ability to conform into 3D interconnected structures support versatile properties, which are required for numerous potential medical applications such as tissue engineering; drug delivery reservoir systems; biomedical implants like heart stents, pacemakers, and artificial heart valves; disease diagnosis; and the development of antibacterial materials. The present review also explores the different mechanical, chemical, and physical properties in numerical values, which are most wanted for the fabrication of different materials used in the biomedical fields.
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Affiliation(s)
- Mateusz Fijalkowski
- Department of Advanced Materials, Institute for Nanomaterials, Advanced Technologies and Innovation (CXI), Technical University of Liberec, 461 17 Liberec, Czech Republic
| | - Azam Ali
- Department of Material Science, Technical University of Liberec, 461 17 Liberec, Czech Republic
| | - Shafqat Qamer
- Department of Basic Medical Sciences, College of Medicine, Prince Sattam Bin Abdulaziz University, Alkharj 11942, Saudi Arabia
| | - Radek Coufal
- Department of Science and Research, Faulty of Health Studies, Technical University of Liberec, 461 17 Liberec, Czech Republic
| | - Kinga Adach
- Department of Advanced Materials, Institute for Nanomaterials, Advanced Technologies and Innovation (CXI), Technical University of Liberec, 461 17 Liberec, Czech Republic
| | - Stanislav Petrik
- Department of Advanced Materials, Institute for Nanomaterials, Advanced Technologies and Innovation (CXI), Technical University of Liberec, 461 17 Liberec, Czech Republic
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Sümbelli Y, Mason AF, van Hest JCM. Toward Artificial Cell-Mediated Tissue Engineering: A New Perspective. Adv Biol (Weinh) 2023; 7:e2300149. [PMID: 37565690 DOI: 10.1002/adbi.202300149] [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: 05/15/2023] [Indexed: 08/12/2023]
Abstract
The fast-growing pace of regenerative medicine research has allowed the development of a range of novel approaches to tissue engineering applications. Until recently, the main points of interest in the majority of studies have been to combine different materials to control cellular behavior and use different techniques to optimize tissue formation, from 3-D bioprinting to in situ regeneration. However, with the increase of the understanding of the fundamentals of cellular organization, tissue development, and regeneration, has also come the realization that for the next step in tissue engineering, a higher level of spatiotemporal control on cell-matrix interactions is required. It is proposed that the combination of artificial cell research with tissue engineering could provide a route toward control over complex tissue development. By equipping artificial cells with the underlying mechanisms of cellular functions, such as communication mechanisms, migration behavior, or the coherent behavior of cells depending on the surrounding matrix properties, they can be applied in instructing native cells into desired differentiation behavior at a resolution not to be attained with traditional matrix materials.
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Affiliation(s)
- Yiğitcan Sümbelli
- Department of Biomedical Engineering, Chemical Engineering and Chemistry, Institute for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, Eindhoven, 5600MB, The Netherlands
| | - Alexander F Mason
- School of Biotechnology and Biomolecular Science, University of New South Wales, Sydney, NSW, 2052, Australia
| | - Jan C M van Hest
- Department of Biomedical Engineering, Chemical Engineering and Chemistry, Institute for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, Eindhoven, 5600MB, The Netherlands
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6
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Özliseli E, Şanlıdağ S, Süren B, Mahran A, Parikainen M, Sahlgren C, Rosenholm JM. Directing cellular responses in a nanocomposite 3D matrix for tissue regeneration with nanoparticle-mediated drug delivery. Mater Today Bio 2023; 23:100865. [PMID: 38054034 PMCID: PMC10694759 DOI: 10.1016/j.mtbio.2023.100865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 10/28/2023] [Accepted: 11/11/2023] [Indexed: 12/07/2023] Open
Abstract
Hydrogels play an important role in tissue engineering due to their native extracellular matrix-like characteristics, but they are insufficient in providing the necessary stimuli to support tissue formation. Efforts to integrate bioactive cues directly into hydrogels are hindered by incompatibility with hydrophobic drugs, issues of burst/uncontrolled release, and rapid degradation of the bioactive molecules. Skeletal muscle tissue repair requires internal stimuli and communication between cells for regeneration, and nanocomposite systems offer to improve the therapeutic effects in tissue regeneration. Here, the versatility of mesoporous silica nanoparticles (MSN) was leveraged to formulate a nanoparticle-hydrogel composite and to combine the benefits of controlled delivery of bioactive cues and cellular support. The tunable surface characteristics of MSNs were exploited to optimize homogeneity and intracellular drug delivery in a 3D matrix. Nanocomposite hydrogels formulated with acetylated or succinylated MSNs achieved high homogeneity in 3D distribution, with succinylated MSNs being rapidly internalized and acetylated MSNs exhibiting slower cellular uptake. MSN-hydrogel nanocomposites simultaneously allowed efficient local intracellular delivery of a hydrophobic model drug. To further study the efficiency of directing cell response, a Notch signaling inhibitor (DAPT) was incorporated into succinylated MSNs and incorporated into the hydrogel. MSN-hydrogel nanocomposites effectively downregulated the Notch signaling target genes, and accelerated and maintained the expression of myogenic markers. The current findings demonstrate a proof-of-concept in effective surface engineering strategies for MSN-based nanocomposites, suited for hydrophobic drug delivery in tissue regeneration with guided cues.
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Affiliation(s)
- Ezgi Özliseli
- Pharmaceutical Sciences Laboratory, Faculty of Science and Engineering, Åbo Akademi University, Turku, Finland
| | - Sami Şanlıdağ
- Faculty of Science and Engineering, Biosciences, Åbo Akademi University, Turku, Finland
- InFLAMES Research Flagship Center, Åbo Akademi University, Turku, Finland
- Turku Bioscience Centre, Åbo Akademi University and University of Turku, Turku, Finland
| | - Behice Süren
- Pharmaceutical Sciences Laboratory, Faculty of Science and Engineering, Åbo Akademi University, Turku, Finland
| | - Alaa Mahran
- Pharmaceutical Sciences Laboratory, Faculty of Science and Engineering, Åbo Akademi University, Turku, Finland
- Department of Pharmaceutics, Faculty of Pharmacy, Assiut University, Assiut, 71526, Egypt
| | - Marjaana Parikainen
- Faculty of Science and Engineering, Biosciences, Åbo Akademi University, Turku, Finland
- InFLAMES Research Flagship Center, Åbo Akademi University, Turku, Finland
- Turku Bioscience Centre, Åbo Akademi University and University of Turku, Turku, Finland
| | - Cecilia Sahlgren
- Faculty of Science and Engineering, Biosciences, Åbo Akademi University, Turku, Finland
- InFLAMES Research Flagship Center, Åbo Akademi University, Turku, Finland
- Turku Bioscience Centre, Åbo Akademi University and University of Turku, Turku, Finland
- Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, the Netherlands
- Institute for Complex Molecular Systems (ICMS), Eindhoven University of Technology, Eindhoven, the Netherlands
| | - Jessica M. Rosenholm
- Pharmaceutical Sciences Laboratory, Faculty of Science and Engineering, Åbo Akademi University, Turku, Finland
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Widbiller M, Galler KM. Engineering the Future of Dental Health: Exploring Molecular Advancements in Dental Pulp Regeneration. Int J Mol Sci 2023; 24:11453. [PMID: 37511210 PMCID: PMC10380375 DOI: 10.3390/ijms241411453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Accepted: 07/02/2023] [Indexed: 07/30/2023] Open
Abstract
Protected by the surrounding mineralized barriers of enamel, dentin, and cementum, dental pulp is a functionally versatile tissue that fulfills multiple roles [...].
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Affiliation(s)
- Matthias Widbiller
- Department of Conservative Dentistry and Periodontology, University Hospital Regensburg, Franz-Josef-Strauß-Allee 11, D-93093 Regensburg, Germany
| | - Kerstin M Galler
- Department of Operative Dentistry and Periodontology, Friedrich-Alexander-University Erlangen-Nuernberg, D-91054 Erlangen, Germany
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8
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Combined application of BMP-2 and naturally occurring bioactive factor mixtures for the optimized therapy of segmental bone defects. Acta Biomater 2023; 157:162-174. [PMID: 36481501 DOI: 10.1016/j.actbio.2022.11.064] [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: 08/02/2022] [Revised: 11/27/2022] [Accepted: 11/30/2022] [Indexed: 12/12/2022]
Abstract
Critical bone defects are the result of traumatic, infection- or tumor-induced segmental bone loss and represent a therapeutic problem that has not been solved by current reconstructive or regenerative strategies yet. Scaffolds functionalized with naturally occurring bioactive factor mixtures show a promising chemotactic and angiogenic potential in vitro and therefore might stimulate bone regeneration in vivo. To assess this prospect, the study targets at heparin-modified mineralized collagen scaffolds functionalized with naturally occurring bioactive factor mixtures and/or rhBMP-2. These scaffolds were implanted into a 2-mm segmental femoral defect in mice and analyzed in respect to newly formed bone volume (BV) and bone mineral density (BMD) by micro-computed tomography scans after an observation period of 6 weeks. To rate the degree of defect healing, the number of vessels, and the activity of osteoclasts and osteoblasts were analyzed histologically. The sole application of bioactive factor mixtures is inferior to the use of the recombinant growth factor rhBMP-2 regarding BV and degree of defect healing. A higher rhBMP-2 concentration or the combination with bioactive factor mixtures does not lead to a further enhancement in defect healing. Possibly, a synergistic effect can be achieved by further concentration or a prolonged release of bioactive factor mixtures. STATEMENT OF SIGNIFICANCE: The successful therapy of extended bone defects is still a major challenge in clinical routine. In this study we investigated the bone regenerative potential of naturally occuring bioactive factor mixtures derived from platelet concentrates, adipose tissue and cell secretomes as a cheap and promising alternative to recombinant growth factors in a murine segmental bone defect model. The mixtures alone were not able to induce complete bridging of the bone defect, but in combination with bone morphogenetic protein 2 bone healing seemed to be more physiological. The results show that naturally occuring bioactive factor mixtures are a promising add-on in a clinical setting.
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Krasilnikova OA, Baranovskii DS, Yakimova AO, Arguchinskaya N, Kisel A, Sosin D, Sulina Y, Ivanov SA, Shegay PV, Kaprin AD, Klabukov ID. Intraoperative Creation of Tissue-Engineered Grafts with Minimally Manipulated Cells: New Concept of Bone Tissue Engineering In Situ. Bioengineering (Basel) 2022; 9:704. [PMID: 36421105 PMCID: PMC9687730 DOI: 10.3390/bioengineering9110704] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 10/31/2022] [Accepted: 11/02/2022] [Indexed: 07/22/2023] Open
Abstract
Transfer of regenerative approaches into clinical practice is limited by strict legal regulation of in vitro expanded cells and risks associated with substantial manipulations. Isolation of cells for the enrichment of bone grafts directly in the Operating Room appears to be a promising solution for the translation of biomedical technologies into clinical practice. These intraoperative approaches could be generally characterized as a joint concept of tissue engineering in situ. Our review covers techniques of intraoperative cell isolation and seeding for the creation of tissue-engineered grafts in situ, that is, directly in the Operating Room. Up-to-date, the clinical use of tissue-engineered grafts created in vitro remains a highly inaccessible option. Fortunately, intraoperative tissue engineering in situ is already available for patients who need advanced treatment modalities.
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Affiliation(s)
- Olga A. Krasilnikova
- Department of Regenerative Medicine, National Medical Research Radiological Center, Koroleva St. 4, 249036 Obninsk, Russia
| | - Denis S. Baranovskii
- Department of Regenerative Medicine, National Medical Research Radiological Center, Koroleva St. 4, 249036 Obninsk, Russia
- Research and Educational Resource Center for Cellular Technologies, Peoples’ Friendship University of Russia (RUDN University), Miklukho-Maklay St. 6, 117198 Moscow, Russia
| | - Anna O. Yakimova
- Department of Regenerative Medicine, National Medical Research Radiological Center, Koroleva St. 4, 249036 Obninsk, Russia
| | - Nadezhda Arguchinskaya
- Department of Regenerative Medicine, National Medical Research Radiological Center, Koroleva St. 4, 249036 Obninsk, Russia
| | - Anastas Kisel
- Department of Regenerative Medicine, National Medical Research Radiological Center, Koroleva St. 4, 249036 Obninsk, Russia
| | - Dmitry Sosin
- Federal State Budgetary Institution “Centre for Strategic Planning and Management of Biomedical Health Risks” of the Federal Medical Biological Agency, Pogodinskaya St. 10 Bld. 1, 119121 Moscow, Russia
| | - Yana Sulina
- Department of Obstetrics and Gynecology, Sechenov University, Bolshaya Pirogovskaya St. 2 Bld. 3, 119435 Moscow, Russia
| | - Sergey A. Ivanov
- Department of Regenerative Medicine, National Medical Research Radiological Center, Koroleva St. 4, 249036 Obninsk, Russia
| | - Peter V. Shegay
- Department of Regenerative Medicine, National Medical Research Radiological Center, Koroleva St. 4, 249036 Obninsk, Russia
| | - Andrey D. Kaprin
- Department of Regenerative Medicine, National Medical Research Radiological Center, Koroleva St. 4, 249036 Obninsk, Russia
- Research and Educational Resource Center for Cellular Technologies, Peoples’ Friendship University of Russia (RUDN University), Miklukho-Maklay St. 6, 117198 Moscow, Russia
| | - Ilya D. Klabukov
- Department of Regenerative Medicine, National Medical Research Radiological Center, Koroleva St. 4, 249036 Obninsk, Russia
- Research and Educational Resource Center for Cellular Technologies, Peoples’ Friendship University of Russia (RUDN University), Miklukho-Maklay St. 6, 117198 Moscow, Russia
- Obninsk Institute for Nuclear Power Engineering, National Research Nuclear University MEPhI, Studgorodok 1, 249039 Obninsk, Russia
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Yuan Z, Wan Z, Gao C, Wang Y, Huang J, Cai Q. Controlled magnesium ion delivery system for in situ bone tissue engineering. J Control Release 2022; 350:360-376. [PMID: 36002052 DOI: 10.1016/j.jconrel.2022.08.036] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 08/17/2022] [Accepted: 08/17/2022] [Indexed: 10/15/2022]
Abstract
Magnesium cation (Mg2+) has been an emerging therapeutic agent for inducing vascularized bone regeneration. However, the therapeutic effects of current magnesium (Mg) -containing biomaterials are controversial due to the concentration- and stage-dependent behavior of Mg2+. Here, we first provide an overview of biochemical mechanism of Mg2+ in various concentrations and suggest that 2-10 mM Mg2+in vitro may be optimized. This review systematically summarizes and discusses several types of controlled Mg2+ delivery systems based on polymer-Mg composite scaffolds and Mg-containing hydrogels, as well as their design philosophy and several parameters that regulate Mg2+ release. Given that the continuous supply of Mg2+ may prevent biomineral deposition in the later stage of bone regeneration and maturation, we highlight the controlled delivery of Mg2+ based dual- or multi-ions system, especially for the hierarchical therapeutic ion release system, which shows enhanced biomineralization. Finally, the remaining challenges and perspectives of Mg-containing biomaterials for future in situ bone tissue engineering are discussed as well.
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Affiliation(s)
- Zuoying Yuan
- Department of Mechanics and Engineering Science, College of Engineering, Peking University, Beijing 100871, China
| | - Zhuo Wan
- Department of Mechanics and Engineering Science, College of Engineering, Peking University, Beijing 100871, China; Beijing Innovation Centre for Engineering Science and Advanced Technology, Peking University, Beijing 100871, China
| | - Chenyuan Gao
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, China
| | - Yue Wang
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, China
| | - Jianyong Huang
- Department of Mechanics and Engineering Science, College of Engineering, Peking University, Beijing 100871, China; Beijing Innovation Centre for Engineering Science and Advanced Technology, Peking University, Beijing 100871, China.
| | - Qing Cai
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, China..
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Caldiroli A, Pederzani E, Pezzotta M, Azzollini N, Fiori S, Tironi M, Rizzo P, Sangalli F, Figliuzzi M, Fiore GB, Remuzzi A, Riboldi SA, Soncini M, Redaelli A. Hybrid fibroin/polyurethane small-diameter vascular grafts: from fabrication to in vivo preliminary assessment. Biomed Mater 2022; 17. [PMID: 35944550 DOI: 10.1088/1748-605x/ac885a] [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: 11/09/2021] [Accepted: 08/08/2022] [Indexed: 11/12/2022]
Abstract
To address the need of alternatives to autologous vessels for small-calibre vascular applications (e.g. cardiac surgery), a hybrid semi-degradable material composed of silk fibroin and polyurethane (Silkothane®) was herein used to fabricate very small-calibre grafts (innner diameter = 1.5 mm) via electrospinning. Hybrid grafts were in vitro characterized in terms of morphology and mechanical behaviour, and compared to similar grafts of pure silk fibroin. Similarly, two native vessels from a rodent model (abdominal aorta and vena cava) were harvested and characterized. Preliminary implants were performed on Lewis rats to confirm the suitability of Silkothane® grafts for small-calibre applications, specifically as aortic insertion and femoral shunt. The manufacturing process generated pliable grafts consisting of a randomized fibrous mesh and exhibiting similar geometrical features to rat aortas. Both Silkothane® and pure silk fibroin grafts showed radial compliances in the range from 1.37 ± 0.86 to 1.88 ± 1.01 % 10-2 mmHg-1, lower than that of native vessels. The Silkothane® small-calibre devices were also implanted in rats demonstrating to be adequate for vascular applications; all the treated rats survived the surgery for 3 months after implantation, and 16 rats out of 17 (94%) still showed blood flow inside the graft at sacrifice. The obtained results lay the basis for a deeper investigation of the interaction between the Silktohane® graft and the implant site, which may deal with further analysis on the potentialities in terms of degradability and tissue formation, on longer time-points.
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Affiliation(s)
- Alice Caldiroli
- Bioengineering Laboratories Srl, Via Vivaldi 32/A, Cantù, 22063, ITALY
| | - Elia Pederzani
- Politecnico di Milano Dipartimento di Elettronica Informazione e Bioingegneria, Via Giuseppe Ponzio 34, Milano, Lombardia, 20133, ITALY
| | - Marco Pezzotta
- Politecnico di Milano Dipartimento di Elettronica Informazione e Bioingegneria, Via Giuseppe Ponzio 34, Milano, Lombardia, 20133, ITALY
| | - Nadia Azzollini
- Istituto di Ricerche Farmacologiche Mario Negri IRCCS , Via Stezzano 87, Bergamo, 24126, ITALY
| | - Sonia Fiori
- , Istituto di ricerche farmacologiche mario negri IRCCS, via Stezzano 87, Bergamo, Lombardia, 24126, ITALY
| | - Matteo Tironi
- Istituto di Ricerche Farmacologiche Mario Negri IRCCS , Via Stezzano 87, Bergamo, 24126, ITALY
| | - Paola Rizzo
- IRCCS Istituto di Ricerche Farmacologiche Mario Negri Centro Anna Maria Astori, via Stezzano 87, Bergamo, 24126, ITALY
| | - Fabio Sangalli
- Istituto di Ricerche Farmacologiche Mario Negri IRCCS, via Stezzano 87, Bergamo, 24126, ITALY
| | - Marina Figliuzzi
- Bioengineering, Istituto di ricerche farmacologiche mario negri IRCCS, via Stezzano 87, Bergamo, Bergamo, 24126, ITALY
| | - Gianfranco Beniamino Fiore
- Politecnico di Milano Dipartimento di Elettronica Informazione e Bioingegneria, Via Giuseppe Ponzio, 34, Milano, Lombardia, 20133, ITALY
| | - Andrea Remuzzi
- Università degli Studi di Bergamo, Via Pignolo 123, Bergamo, Lombardia, 24121, ITALY
| | | | - Monica Soncini
- Department of Electronics, Information and Bioengineering, Politecnico di Milano, Piazza L Da Vinci ,32, Milano, 20133, ITALY
| | - Alberto Redaelli
- Politecnico di Milano Dipartimento di Elettronica Informazione e Bioingegneria, Via Giuseppe Ponzio 34, Milano, 20133, ITALY
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Iafrate L, Benedetti MC, Donsante S, Rosa A, Corsi A, Oreffo ROC, Riminucci M, Ruocco G, Scognamiglio C, Cidonio G. Modelling skeletal pain harnessing tissue engineering. IN VITRO MODELS 2022; 1:289-307. [PMID: 36567849 PMCID: PMC9766883 DOI: 10.1007/s44164-022-00028-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 07/01/2022] [Accepted: 07/04/2022] [Indexed: 12/27/2022]
Abstract
Bone pain typically occurs immediately following skeletal damage with mechanical distortion or rupture of nociceptive fibres. The pain mechanism is also associated with chronic pain conditions where the healing process is impaired. Any load impacting on the area of the fractured bone will stimulate the nociceptive response, necessitating rapid clinical intervention to relieve pain associated with the bone damage and appropriate mitigation of any processes involved with the loss of bone mass, muscle, and mobility and to prevent death. The following review has examined the mechanisms of pain associated with trauma or cancer-related skeletal damage focusing on new approaches for the development of innovative therapeutic interventions. In particular, the review highlights tissue engineering approaches that offer considerable promise in the application of functional biomimetic fabrication of bone and nerve tissues. The strategic combination of bone and nerve tissue engineered models provides significant potential to develop a new class of in vitro platforms, capable of replacing in vivo models and testing the safety and efficacy of novel drug treatments aimed at the resolution of bone-associated pain. To date, the field of bone pain research has centred on animal models, with a paucity of data correlating to the human physiological response. This review explores the evident gap in pain drug development research and suggests a step change in approach to harness tissue engineering technologies to recapitulate the complex pathophysiological environment of the damaged bone tissue enabling evaluation of the associated pain-mimicking mechanism with significant therapeutic potential therein for improved patient quality of life. Graphical abstract Rationale underlying novel drug testing platform development. Pain detected by the central nervous system and following bone fracture cannot be treated or exclusively alleviated using standardised methods. The pain mechanism and specificity/efficacy of pain reduction drugs remain poorly understood. In vivo and ex vivo models are not yet able to recapitulate the various pain events associated with skeletal damage. In vitro models are currently limited by their inability to fully mimic the complex physiological mechanisms at play between nervous and skeletal tissue and any disruption in pathological states. Robust innovative tissue engineering models are needed to better understand pain events and to investigate therapeutic regimes.
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Affiliation(s)
- Lucia Iafrate
- Center for Life Nano- & Neuro-Science (CLN2S), Istituto Italiano di Tecnologia, Rome, Italy
| | - Maria Cristina Benedetti
- Center for Life Nano- & Neuro-Science (CLN2S), Istituto Italiano di Tecnologia, Rome, Italy
- Department of Biology and Biotechnologies “Charles Darwin”, Sapienza University of Rome, Rome, Italy
| | - Samantha Donsante
- Department of Molecular Medicine, Sapienza University of Rome, Rome, Italy
| | - Alessandro Rosa
- Center for Life Nano- & Neuro-Science (CLN2S), Istituto Italiano di Tecnologia, Rome, Italy
- Department of Biology and Biotechnologies “Charles Darwin”, Sapienza University of Rome, Rome, Italy
| | - Alessandro Corsi
- Department of Molecular Medicine, Sapienza University of Rome, Rome, Italy
| | - Richard O. C. Oreffo
- Bone and Joint Research Group, Stem Cells and Regeneration, Institute of Developmental Sciences, Centre for Human Development, University of Southampton, Southampton, UK
| | - Mara Riminucci
- Department of Molecular Medicine, Sapienza University of Rome, Rome, Italy
| | - Giancarlo Ruocco
- Center for Life Nano- & Neuro-Science (CLN2S), Istituto Italiano di Tecnologia, Rome, Italy
| | - Chiara Scognamiglio
- Center for Life Nano- & Neuro-Science (CLN2S), Istituto Italiano di Tecnologia, Rome, Italy
| | - Gianluca Cidonio
- Center for Life Nano- & Neuro-Science (CLN2S), Istituto Italiano di Tecnologia, Rome, Italy
- Bone and Joint Research Group, Stem Cells and Regeneration, Institute of Developmental Sciences, Centre for Human Development, University of Southampton, Southampton, UK
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Ordoño J, Pérez-Amodio S, Ball K, Aguirre A, Engel E. The generation of a lactate-rich environment stimulates cell cycle progression and modulates gene expression on neonatal and hiPSC-derived cardiomyocytes. BIOMATERIALS ADVANCES 2022; 139:213035. [PMID: 35907761 PMCID: PMC11061846 DOI: 10.1016/j.bioadv.2022.213035] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 07/13/2022] [Accepted: 07/14/2022] [Indexed: 06/15/2023]
Abstract
In situ tissue engineering strategies are a promising approach to activate the endogenous regenerative potential of the cardiac tissue helping the heart to heal itself after an injury. However, the current use of complex reprogramming vectors for the activation of reparative pathways challenges the easy translation of these therapies into the clinic. Here, we evaluated the response of mouse neonatal and human induced pluripotent stem cell-derived cardiomyocytes to the presence of exogenous lactate, thus mimicking the metabolic environment of the fetal heart. An increase in cardiomyocyte cell cycle activity was observed in the presence of lactate, as determined through Ki67 and Aurora-B kinase. Gene expression and RNA-sequencing data revealed that cardiomyocytes incubated with lactate showed upregulation of BMP10, LIN28 or TCIM in tandem with downregulation of GRIK1 or DGKK among others. Lactate also demonstrated a capability to modulate the production of inflammatory cytokines on cardiac fibroblasts, reducing the production of Fas, Fraktalkine or IL-12p40, while stimulating IL-13 and SDF1a. In addition, the generation of a lactate-rich environment improved ex vivo neonatal heart culture, by affecting the contractile activity and sarcomeric structures and inhibiting epicardial cell spreading. Our results also suggested a common link between the effect of lactate and the activation of hypoxia signaling pathways. These findings support a novel use of lactate in cardiac tissue engineering, modulating the metabolic environment of the heart and thus paving the way to the development of lactate-releasing platforms for in situ cardiac regeneration.
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Affiliation(s)
- Jesús Ordoño
- Biomaterials for Regenerative Therapies Group, Institute for Bioengineering of Catalonia (IBEC), Barcelona Institute of Science and Technology, Barcelona, Spain; CIBER Bioengineering, Biomaterials and Nanotechnology, Spain
| | - Soledad Pérez-Amodio
- Biomaterials for Regenerative Therapies Group, Institute for Bioengineering of Catalonia (IBEC), Barcelona Institute of Science and Technology, Barcelona, Spain; CIBER Bioengineering, Biomaterials and Nanotechnology, Spain; IMEM-BRT Group, Dpt. Material Science and Engineering, Universitat Politecnica de Catalunya (UPC), Barcelona, Spain
| | - Kristen Ball
- Regenerative Biology and cell Reprogramming Laboratory, Institute for Quantitative Health Sciences and Engineering (IQ), Michigan State University, East Lansing, MI, USA; Department of Biomedical Engineering, Michigan State University, MI, USA
| | - Aitor Aguirre
- Regenerative Biology and cell Reprogramming Laboratory, Institute for Quantitative Health Sciences and Engineering (IQ), Michigan State University, East Lansing, MI, USA; Department of Biomedical Engineering, Michigan State University, MI, USA
| | - Elisabeth Engel
- Biomaterials for Regenerative Therapies Group, Institute for Bioengineering of Catalonia (IBEC), Barcelona Institute of Science and Technology, Barcelona, Spain; CIBER Bioengineering, Biomaterials and Nanotechnology, Spain; IMEM-BRT Group, Dpt. Material Science and Engineering, Universitat Politecnica de Catalunya (UPC), Barcelona, Spain.
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Wang C, Wang H, Chen Q, Gang H, Zhou Y, Gu S, Liu X, Xu W, Zhang B, Yang H. Polylactic acid scaffold with directional porous structure for large-segment bone repair. Int J Biol Macromol 2022; 216:810-819. [PMID: 35908680 DOI: 10.1016/j.ijbiomac.2022.07.207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 07/25/2022] [Accepted: 07/25/2022] [Indexed: 11/24/2022]
Abstract
Biodegradable porous scaffolds with different structure, porosity, and strength play a critical role in the repair and regeneration of defects in bone tissue engineering by changing the proliferation condition for cell. In this study, polylactic acid (PLA) scaffold with directional porous structure is designed and fabricated using the method of ice template and phase inversion for speeding up bone repair by promoting the growth and proliferation of bone cells. The morphology, mechanical properties, hydrophilicity, and wicking properties of PLA scaffolds were characterized by scanning electron microscope, universal testing machine, contact angle tester and wicking rate test, respectively. In vitro biocompatibility has been investigated through measuring cell adhesion, proliferation, and viability on PLA scaffold with directional porous structure. Prepared PLA scaffold was implanted into animals to observe the repair mechanism of large-sized bone defects. This study proposes a novel bioporous scaffold design to induce osteocyte growth at the rat calvaria with a directional pore structure, and the scaffold edges were integrated with the calvaria at week 12, effectively promoting the repair and regeneration of defective bone tissue.
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Affiliation(s)
- Chaorong Wang
- College of Materials Science and Engineering, Wuhan Textile University, Wuhan 430200, China
| | - Han Wang
- Key Laboratory of Green Processing and Functional New Textile Materials of Ministry of Education, Wuhan Textile University, Wuhan 430200, China; Institute for Frontier Materials, Deakin University, Geelong, Victoria 3216, Australia
| | - Qingqing Chen
- College of Materials Science and Engineering, Wuhan Textile University, Wuhan 430200, China
| | - Hanlin Gang
- Key Laboratory of Green Processing and Functional New Textile Materials of Ministry of Education, Wuhan Textile University, Wuhan 430200, China
| | - Yingshan Zhou
- College of Materials Science and Engineering, Wuhan Textile University, Wuhan 430200, China
| | - Shaojin Gu
- College of Materials Science and Engineering, Wuhan Textile University, Wuhan 430200, China
| | - Xin Liu
- College of Materials Science and Engineering, Wuhan Textile University, Wuhan 430200, China
| | - Weilin Xu
- Key Laboratory of Green Processing and Functional New Textile Materials of Ministry of Education, Wuhan Textile University, Wuhan 430200, China
| | - Baocheng Zhang
- Department of Orthopaedics, General Hospital of Central Theater Command of PLA, Wuhan 430070, China.
| | - Hongjun Yang
- College of Materials Science and Engineering, Wuhan Textile University, Wuhan 430200, China; Key Laboratory of Green Processing and Functional New Textile Materials of Ministry of Education, Wuhan Textile University, Wuhan 430200, China.
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Strategies for development of decellularized heart valve scaffolds for tissue engineering. Biomaterials 2022; 288:121675. [DOI: 10.1016/j.biomaterials.2022.121675] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 07/02/2022] [Accepted: 07/06/2022] [Indexed: 01/01/2023]
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16
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Angelova L, Daskalova A, Filipov E, Vila XM, Tomasch J, Avdeev G, Teuschl-Woller AH, Buchvarov I. Optimizing the Surface Structural and Morphological Properties of Silk Thin Films via Ultra-Short Laser Texturing for Creation of Muscle Cell Matrix Model. Polymers (Basel) 2022; 14:polym14132584. [PMID: 35808630 PMCID: PMC9269134 DOI: 10.3390/polym14132584] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 06/21/2022] [Accepted: 06/23/2022] [Indexed: 02/04/2023] Open
Abstract
Temporary scaffolds that mimic the extracellular matrix’s structure and provide a stable substratum for the natural growth of cells are an innovative trend in the field of tissue engineering. The aim of this study is to obtain and design porous 2D fibroin-based cell matrices by femtosecond laser-induced microstructuring for future applications in muscle tissue engineering. Ultra-fast laser treatment is a non-contact method, which generates controlled porosity—the creation of micro/nanostructures on the surface of the biopolymer that can strongly affect cell behavior, while the control over its surface characteristics has the potential of directing the growth of future muscle tissue in the desired direction. The laser structured 2D thin film matrices from silk were characterized by means of SEM, EDX, AFM, FTIR, Micro-Raman, XRD, and 3D-roughness analyses. A WCA evaluation and initial experiments with murine C2C12 myoblasts cells were also performed. The results show that by varying the laser parameters, a different structuring degree can be achieved through the initial lifting and ejection of the material around the area of laser interaction to generate porous channels with varying widths and depths. The proper optimization of the applied laser parameters can significantly improve the bioactive properties of the investigated 2D model of a muscle cell matrix.
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Affiliation(s)
- Liliya Angelova
- Institute of Electronics, Bulgarian Academy of Sciences, 72 Tzarigradsko Shousse Blvd., 1784 Sofia, Bulgaria; (A.D.); (E.F.)
- Correspondence:
| | - Albena Daskalova
- Institute of Electronics, Bulgarian Academy of Sciences, 72 Tzarigradsko Shousse Blvd., 1784 Sofia, Bulgaria; (A.D.); (E.F.)
| | - Emil Filipov
- Institute of Electronics, Bulgarian Academy of Sciences, 72 Tzarigradsko Shousse Blvd., 1784 Sofia, Bulgaria; (A.D.); (E.F.)
| | - Xavier Monforte Vila
- Department Life Science Engineering, University of Applied Sciences Technikum Wien, Höchstädtplatz 6, 1200 Vienna, Austria; (X.M.V.); (J.T.); (A.H.T.-W.)
- Austrian Cluster for Tissue Regeneration, 1200 Vienna, Austria
| | - Janine Tomasch
- Department Life Science Engineering, University of Applied Sciences Technikum Wien, Höchstädtplatz 6, 1200 Vienna, Austria; (X.M.V.); (J.T.); (A.H.T.-W.)
- Austrian Cluster for Tissue Regeneration, 1200 Vienna, Austria
| | - Georgi Avdeev
- Institute of Physical Chemistry, Bulgarian Academy of Sciences, Akad. G. Bonchev Str., 1113 Sofia, Bulgaria;
| | - Andreas H. Teuschl-Woller
- Department Life Science Engineering, University of Applied Sciences Technikum Wien, Höchstädtplatz 6, 1200 Vienna, Austria; (X.M.V.); (J.T.); (A.H.T.-W.)
- Austrian Cluster for Tissue Regeneration, 1200 Vienna, Austria
| | - Ivan Buchvarov
- Faculty of Physics, St. Kliment Ohridski University of Sofia, 5 James Bourchier Blvd., 1164 Sofia, Bulgaria;
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[Effects of different crosslinking treatments on the properties of decellularized small intestinal submucosa porous scaffolds]. BEIJING DA XUE XUE BAO. YI XUE BAN = JOURNAL OF PEKING UNIVERSITY. HEALTH SCIENCES 2022. [PMID: 35701136 PMCID: PMC9197715 DOI: 10.19723/j.issn.1671-167x.2022.03.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
OBJECTIVE To compare the effects of three different crosslinkers on the biocompatibility, physical and chemical properties of decellularized small intestinal submucosa (SIS) porous scaffolds. METHODS The SIS porous scaffolds were prepared by freeze-drying method and randomly divided into three groups, then crosslinked by glutaraldehyde (GA), 1-ethyl-3-(3-dimethylaminopropyl) carbodi-imide (EDC) and procyanidine (PA) respectively. To evaluate the physicochemical property of each sample in different groups, the following experiments were conducted. Macroscopic morphologies were observed and recorded. Microscopic morphologies of the scaffolds were observed using field emission scanning electron microscope (FESEM) and representative images were selected. Computer software (ImageJ) was used to calculate the pore size and porosity. The degree of crosslinking was determined by ninhydrin experiment. Collagenase degradation experiment was performed to assess the resistance of SIS scaffolds to enzyme degradation. To evaluate the mechanical properties, universal mechanical testing machine was used to determine the stress-strain curve and compression strength was calculated. Human bone marrow mesenchymal cells (hBMSCs) were cultured on the scaffolds after which cytotoxicity and cell proliferation were assessed. RESULTS All the scaffolds remained intact after different crosslinking treatments. The FESEM images showed uniformed interconnected micro structures of scaffolds in different groups. The pore size of EDC group[(161.90±13.44) μm] was significantly higher than GA group [(149.50±14.65) μm] and PA group[(140.10±12.06) μm] (P < 0.05). The porosity of PA group (79.62%±1.14%) was significantly lower than EDC group (85.11%±1.71%) and GA group (84.83%±1.89%) (P < 0.05). PA group showed the highest degree of crosslinking whereas the lowest swelling ratio. There was a significant difference in the swelling ratio of the three groups (P < 0.05). Regarding to the collagenase degradation experiment, the scaffolds in PA group showed a significantly lower weight loss rate than the other groups after 7 days degradation. The weight loss rates of GA group were significantly higher than those of the other groups on day 15, whereas the PA group had the lowest rate after 10 days and 15 days degradation. PA group showed better mechanical properties than the other two groups. More living cells could be seen in PA and EDC groups after live/dead cell staining. Additionally, the proliferation rate of hBMCSs was faster in PA and EDC groups than in GA group. CONCLUSION The scaffolds gained satisfying degree of crosslinking after three different crosslinking treatments. The samples after PA and EDC treatment had better physicochemical properties and biocompatibility compared with GA treatment. Crosslinking can be used as a promising and applicable method in the modification of SIS scaffolds.
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18
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Tafti MF, Aghamollaei H, Moghaddam MM, Jadidi K, Alio JL, Faghihi S. Emerging tissue engineering strategies for the corneal regeneration. J Tissue Eng Regen Med 2022; 16:683-706. [PMID: 35585479 DOI: 10.1002/term.3309] [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: 11/23/2021] [Revised: 04/16/2022] [Accepted: 04/19/2022] [Indexed: 11/10/2022]
Abstract
Cornea as the outermost layer of the eye is at risk of various genetic and environmental diseases that can damage the cornea and impair vision. Corneal transplantation is among the most applicable surgical procedures for repairing the defected tissue. However, the scarcity of healthy tissue donations as well as transplantation failure has remained as the biggest challenges in confront of corneal grafting. Therefore, alternative approaches based on stem-cell transplantation and classic regenerative medicine have been developed for corneal regeneration. In this review, the application and limitation of the recently-used advanced approaches for regeneration of cornea are discussed. Additionally, other emerging powerful techniques such as 5D printing as a new branch of scaffold-based technologies for construction of tissues other than the cornea are highlighted and suggested as alternatives for corneal reconstruction. The introduced novel techniques may have great potential for clinical applications in corneal repair including disease modeling, 3D pattern scheming, and personalized medicine.
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Affiliation(s)
- Mahsa Fallah Tafti
- Stem Cell and Regenerative Medicine Group, National Institute of Genetic Engineering and Biotechnology, Tehran, Iran
| | - Hossein Aghamollaei
- Chemical Injuries Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | | | - Khosrow Jadidi
- Vision Health Research Center, Semnan University of Medical Sciences, Semnan, Iran
| | - Jorge L Alio
- Department of Research and Development, VISSUM, Alicante, Spain.,Cornea, Cataract and Refractive Surgery Department, VISSUM, Alicante, Spain.,Department of Pathology and Surgery, Division of Ophthalmology, Faculty of Medicine, Miguel Hernández University, Alicante, Spain
| | - Shahab Faghihi
- Stem Cell and Regenerative Medicine Group, National Institute of Genetic Engineering and Biotechnology, Tehran, Iran
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19
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Marzi J, Munnig Schmidt EC, Brauchle EM, Wissing TB, Bauer H, Serrero A, Söntjens SHM, Bosman AW, Cox MAJ, Smits AIPM, Schenke-Layland K. Marker-Independent Monitoring of in vitro and in vivo Degradation of Supramolecular Polymers Applied in Cardiovascular in situ Tissue Engineering. Front Cardiovasc Med 2022; 9:885873. [PMID: 35656396 PMCID: PMC9152121 DOI: 10.3389/fcvm.2022.885873] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Accepted: 04/25/2022] [Indexed: 11/27/2022] Open
Abstract
The equilibrium between scaffold degradation and neotissue formation, is highly essential for in situ tissue engineering. Herein, biodegradable grafts function as temporal roadmap to guide regeneration. The ability to monitor and understand the dynamics of degradation and tissue deposition in in situ cardiovascular graft materials is therefore of great value to accelerate the implementation of safe and sustainable tissue-engineered vascular grafts (TEVGs) as a substitute for conventional prosthetic grafts. In this study, we investigated the potential of Raman microspectroscopy and Raman imaging to monitor degradation kinetics of supramolecular polymers, which are employed as degradable scaffolds in in situ tissue engineering. Raman imaging was applied on in vitro degraded polymers, investigating two different polymer materials, subjected to oxidative and enzymatically-induced degradation. Furthermore, the method was transferred to analyze in vivo degradation of tissue-engineered carotid grafts after 6 and 12 months in a sheep model. Multivariate data analysis allowed to trace degradation and to compare the data from in vitro and in vivo degradation, indicating similar molecular observations in spectral signatures between implants and oxidative in vitro degradation. In vivo degradation appeared to be dominated by oxidative pathways. Furthermore, information on collagen deposition and composition could simultaneously be obtained from the same image scans. Our results demonstrate the sensitivity of Raman microspectroscopy to determine degradation stages and the assigned molecular changes non-destructively, encouraging future exploration of this techniques for time-resolved quality assessment of in situ tissue engineering processes.
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Affiliation(s)
- Julia Marzi
- Department for Medical Technologies and Regenerative Medicine, Institute of Biomedical Engineering, Eberhard Karls University Tübingen, Tübingen, Germany
- NMI Natural and Medical Sciences Institute at the University of Tübingen, Reutlingen, Germany
- Cluster of Excellence iFIT (EXC 2180) “Image-Guided and Functionally Instructed Tumor Therapies, ” Eberhard Karls University Tübingen, Tübingen, Germany
- *Correspondence: Julia Marzi
| | - Emma C. Munnig Schmidt
- Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, Netherlands
| | - Eva M. Brauchle
- Department for Medical Technologies and Regenerative Medicine, Institute of Biomedical Engineering, Eberhard Karls University Tübingen, Tübingen, Germany
- NMI Natural and Medical Sciences Institute at the University of Tübingen, Reutlingen, Germany
- Cluster of Excellence iFIT (EXC 2180) “Image-Guided and Functionally Instructed Tumor Therapies, ” Eberhard Karls University Tübingen, Tübingen, Germany
| | - Tamar B. Wissing
- Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, Netherlands
- Institute for Complex Molecular Systems (ICMS), Eindhoven University of TechnologyEindhoven, Netherlands
| | | | | | | | | | | | - Anthal I. P. M. Smits
- Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, Netherlands
- Institute for Complex Molecular Systems (ICMS), Eindhoven University of TechnologyEindhoven, Netherlands
| | - Katja Schenke-Layland
- Department for Medical Technologies and Regenerative Medicine, Institute of Biomedical Engineering, Eberhard Karls University Tübingen, Tübingen, Germany
- NMI Natural and Medical Sciences Institute at the University of Tübingen, Reutlingen, Germany
- Cluster of Excellence iFIT (EXC 2180) “Image-Guided and Functionally Instructed Tumor Therapies, ” Eberhard Karls University Tübingen, Tübingen, Germany
- Cardiovascular Research Laboratories, Department of Medicine, David Geffen School of Medicine at University of California, Los Angeles, Los Angeles, CA, United States
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Fang Z, Xiao Y, Geng X, Jia L, Xing Y, Ye L, Gu Y, Zhang AY, Feng ZG. Fabrication of heparinized small diameter TPU/PCL bi-layered artificial blood vessels and in vivo assessment in a rabbit carotid artery replacement model. BIOMATERIALS ADVANCES 2022; 133:112628. [PMID: 35527159 DOI: 10.1016/j.msec.2021.112628] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 12/12/2021] [Accepted: 12/18/2021] [Indexed: 06/14/2023]
Abstract
Increasingly growing problems in vascular access for long-term hemodialysis lead to a considerable demand for synthetic small diameter vascular prostheses, which usually suffer from some drawbacks and are associated to high failure rates. Incorporating the concept of in situ tissue engineering (TE) into synthetic small diameter blood vessels, for example, thermoplastic poly(ether urethane) (TPU) ones, could provide an alternative approach for vascular access that profits from the advantages of excellent mechanical properties of synthetic polymer materials (early cannulation) and unique biointegration regeneration of autologous neovascular tissues (long-term fistulae). In this study, a kind of heparinized small diameter (d = 2.5 mm) TPU/poly(ε-caprolactone) (TPU/PCL-Hep) bi-layered blood vessels was electrospun with an inner layer of PCL and an outer layer of TPU. Afterward, the inner surface heparinization was conducted by coupling H2N-PEG-NH2 to the corroded PCL layer and then heparin to the attached H2N-PEG-NH2 via the EDCI/NHS chemistry. Herein a heparinized PCL inner layer could not only inhibit thrombosis, but also provide sufficient space for the neotissue regeneration via biodegradation with time. Meanwhile, a TPU outer layer could confer the vascular access the good mechanical properties, such as flexibility, viability and fitness of elasticity between the grafts and host blood vessels as evidenced by the adequate mechanical properties, such as compliance (4.43 ± 0.07%/ 100 mmHg), burst pressure (1447 ± 127 mmHg) and suture retention strength (1.26 ± 0.07 N) without blood seepage after implantation. Furthermore, a rabbit carotid aortic replacement model for 5 months was demonstrated 100% animal survival and 86% graft patency. Puncture assay also revealed the puncture resistance and self-sealing (hemostatic time < 2 min). Histological analysis highlighted neotissue regeneration, host cell infiltration and graft remodeling in terms of extracellular matrix turnover. Altogether, these results showed promising aspects of small diameter TPU/PCL-Hep bi-layered grafts for hemodialytic vascular access applications.
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Affiliation(s)
- Zhiping Fang
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Yonghao Xiao
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Xue Geng
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Liujun Jia
- Beijing Key Laboratory of Preclinical Research and Evaluation for Cardiovascular Implant Materials, Fuwai Hospital National Cardiovascular Center, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100037, China
| | - Yuehao Xing
- Department of Vascular Surgery, Xuanwu Hospital and Institute of Vascular Surgery, Capital Medical University, Beijing 100053, China
| | - Lin Ye
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Yongquan Gu
- Department of Vascular Surgery, Xuanwu Hospital and Institute of Vascular Surgery, Capital Medical University, Beijing 100053, China
| | - Ai-Ying Zhang
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Zeng-Guo Feng
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China.
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Adel IM, ElMeligy MF, Elkasabgy NA. Conventional and Recent Trends of Scaffolds Fabrication: A Superior Mode for Tissue Engineering. Pharmaceutics 2022; 14:306. [DOI: https:/doi.org/10.3390/pharmaceutics14020306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2023] Open
Abstract
Tissue regeneration is an auto-healing mechanism, initiating immediately following tissue damage to restore normal tissue structure and function. This falls in line with survival instinct being the most dominant instinct for any living organism. Nevertheless, the process is slow and not feasible in all tissues, which led to the emergence of tissue engineering (TE). TE aims at replacing damaged tissues with new ones. To do so, either new tissue is being cultured in vitro and then implanted, or stimulants are implanted into the target site to enhance endogenous tissue formation. Whichever approach is used, a matrix is used to support tissue growth, known as ‘scaffold’. In this review, an overall look at scaffolds fabrication is discussed, starting with design considerations and different biomaterials used. Following, highlights of conventional and advanced fabrication techniques are attentively presented. The future of scaffolds in TE is ever promising, with the likes of nanotechnology being investigated for scaffold integration. The constant evolvement of organoids and biofluidics with the eventual inclusion of organ-on-a-chip in TE has shown a promising prospect of what the technology might lead to. Perhaps the closest technology to market is 4D scaffolds following the successful implementation of 4D printing in other fields.
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Conventional and Recent Trends of Scaffolds Fabrication: A Superior Mode for Tissue Engineering. Pharmaceutics 2022; 14:pharmaceutics14020306. [PMID: 35214038 PMCID: PMC8877304 DOI: 10.3390/pharmaceutics14020306] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 01/19/2022] [Accepted: 01/24/2022] [Indexed: 12/16/2022] Open
Abstract
Tissue regeneration is an auto-healing mechanism, initiating immediately following tissue damage to restore normal tissue structure and function. This falls in line with survival instinct being the most dominant instinct for any living organism. Nevertheless, the process is slow and not feasible in all tissues, which led to the emergence of tissue engineering (TE). TE aims at replacing damaged tissues with new ones. To do so, either new tissue is being cultured in vitro and then implanted, or stimulants are implanted into the target site to enhance endogenous tissue formation. Whichever approach is used, a matrix is used to support tissue growth, known as ‘scaffold’. In this review, an overall look at scaffolds fabrication is discussed, starting with design considerations and different biomaterials used. Following, highlights of conventional and advanced fabrication techniques are attentively presented. The future of scaffolds in TE is ever promising, with the likes of nanotechnology being investigated for scaffold integration. The constant evolvement of organoids and biofluidics with the eventual inclusion of organ-on-a-chip in TE has shown a promising prospect of what the technology might lead to. Perhaps the closest technology to market is 4D scaffolds following the successful implementation of 4D printing in other fields.
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Tissue Engineering of the Urethra: From Bench to Bedside. Biomedicines 2021; 9:biomedicines9121917. [PMID: 34944733 PMCID: PMC8698949 DOI: 10.3390/biomedicines9121917] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2021] [Revised: 12/10/2021] [Accepted: 12/13/2021] [Indexed: 11/30/2022] Open
Abstract
Tissue engineering (TE) is a promising approach for repair/substitution of damaged tissues and organs. Urethral strictures are common and serious health conditions that impair quality of life and may lead to serious organ damage. The search for ideal materials for urethral repair has led to interest of scientists and surgeons in urethral TE. Over the last decades, a significant amount of preclinical studies and considerable progress have been observed. In contrast, urethral TE has made slow progress in clinical practice so far. To address this, we conducted a systematic review of the literature on clinical applications of TE constructs for urethral repair in the last three decades. In summary, the TE approach is promising and effective, but many issues remain that need to be addressed for broader adoption of TE in urethral repair. Better design of trials, better cooperation of research groups and centralization could lead to reduction of costs and slowly proceed to commercialization and routine use of TE products for urethral reconstruction.
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Jana S, Morse D, Lerman A. Leaflet Tissue Generation from Microfibrous Heart Valve Leaflet Scaffolds with Native Characteristics. ACS APPLIED BIO MATERIALS 2021; 4:7836-7847. [PMID: 35006765 DOI: 10.1021/acsabm.1c00768] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Mechanical and bioprosthetic valves that are currently applied for replacing diseased heart valves are not fully efficient. Heart valve tissue engineering may solve the issues faced by the prosthetic valves in heart valve replacement. The leaflets of native heart valves have a trilayered structure with layer-specific orientations; thus, it is imperative to develop functional leaflet tissue constructs with a native trilayered, oriented structure. Its key solution is to develop leaflet scaffolds with a native morphology and structure. In this study, microfibrous leaflet scaffolds with a native trilayered and oriented structure were developed in an electrospinning system. The scaffolds were implanted for 3 months in rats subcutaneously to study the scaffold efficiencies in generating functional tissue-engineered leaflet constructs. These in vivo tissue-engineered leaflet constructs had a trilayered, oriented structure similar to native leaflets. The tensile properties of constructs indicated that they were able to endure the hydrodynamic load of the native heart valve. Collagen, glycosaminoglycans, and elastin─the predominant extracellular matrix components of native leaflets─were found sufficiently in the leaflet tissue constructs. The residing cells in the leaflet tissue constructs showed vimentin and α-smooth muscle actin expression, i.e., the constructs were in a growing state. Thus, the trilayered, oriented fibrous leaflet scaffolds produced in this study could be useful to develop heart valve scaffolds for successful heart valve replacements.
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Affiliation(s)
- Soumen Jana
- Department of Bioengineering, University of Missouri, Columbia, Missouri 65211, United States.,Division of Cardiovascular Diseases, Mayo Clinic, 200 First Street SW, Rochester, Minnesota 55905, United States
| | - David Morse
- Division of Cardiovascular Diseases, Mayo Clinic, 200 First Street SW, Rochester, Minnesota 55905, United States
| | - Amir Lerman
- Division of Cardiovascular Diseases, Mayo Clinic, 200 First Street SW, Rochester, Minnesota 55905, United States
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Yuce-Erarslan E, Tutar R, İzbudak B, Alarçin E, Kocaaga B, Guner FS, Emik S, Bal-Ozturk A. Photo-crosslinkable chitosan and gelatin-based nanohybrid bioinks for extrusion-based 3D-bioprinting. INT J POLYM MATER PO 2021. [DOI: 10.1080/00914037.2021.1981322] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Elif Yuce-Erarslan
- Faculty of Engineering, Chemical Engineering Department, Istanbul University—Cerrahpasa, Avcılar, Turkey
| | - Rumeysa Tutar
- Faculty of Engineering, Department of Chemistry, Istanbul University—Cerrahpasa, Avcılar, Turkey
| | - Burçin İzbudak
- Department of Stem Cell and Tissue Engineering, Institute of Health Sciences, Istinye University, Istanbul, Turkey
| | - Emine Alarçin
- Faculty of Pharmacy, Department of Pharmaceutical Technology, Marmara University, Istanbul, Turkey
| | - Banu Kocaaga
- Department of Chemical Engineering, Istanbul Technical University, Maslak, Turkey
| | - F. Seniha Guner
- Department of Chemical Engineering, Istanbul Technical University, Maslak, Turkey
| | - Serkan Emik
- Faculty of Engineering, Chemical Engineering Department, Istanbul University—Cerrahpasa, Avcılar, Turkey
| | - Ayca Bal-Ozturk
- Department of Stem Cell and Tissue Engineering, Institute of Health Sciences, Istinye University, Istanbul, Turkey
- Faculty of Pharmacy, Department of Analytical Chemistry, Istinye University, Istanbul, Turkey
- 3D Bioprinting Design & Prototyping R&D Center, Istinye University, Zeytinburnu, Turkey
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Jana S, Franchi F, Lerman A. Fibrous heart valve leaflet substrate with native-mimicked morphology. APPLIED MATERIALS TODAY 2021; 24:101112. [PMID: 34485682 PMCID: PMC8415466 DOI: 10.1016/j.apmt.2021.101112] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Tissue-engineered heart valves are a promising alternative solution to prosthetic valves. However, long-term functionalities of tissue-engineered heart valves depend on the ability to mimic the trilayered, oriented structure of native heart valve leaflets. In this study, using electrospinning, we developed trilayered microfibrous leaflet substrates with morphological characteristics similar to native leaflets. The substrates were implanted subcutaneously in rats to study the effect of their trilayered oriented structure on in vivo tissue engineering. The tissue constructs showed a well-defined structure, with a circumferentially oriented layer, a randomly oriented layer and a radially oriented layer. The extracellular matrix, produced during in vivo tissue engineering, consisted of collagen, glycosaminoglycans, and elastin, all major components of native leaflets. Moreover, the anisotropic tensile properties of the constructs were sufficient to bear the valvular physiological load. Finally, the expression of vimentin and α-smooth muscle actin, at the gene and protein level, was detected in the residing cells, revealing their growing state and their transdifferentiation to myofibroblasts. Our data support a critical role for the trilayered structure and anisotropic properties in functional leaflet tissue constructs, and indicate that the leaflet substrates have the potential for the development of valve scaffolds for heart valve replacements.
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Affiliation(s)
- Soumen Jana
- Department of Bioengineering, University of Missouri,
Columbia, MO 65211, USA
- Department of Cardiovascular Medicine, Mayo Clinic, 200
First Street SW, Rochester, MN 55905, USA
| | - Federico Franchi
- Department of Cardiovascular Medicine, Mayo Clinic, 200
First Street SW, Rochester, MN 55905, USA
| | - Amir Lerman
- Department of Cardiovascular Medicine, Mayo Clinic, 200
First Street SW, Rochester, MN 55905, USA
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Chemotactic and Angiogenic Potential of Mineralized Collagen Scaffolds Functionalized with Naturally Occurring Bioactive Factor Mixtures to Stimulate Bone Regeneration. Int J Mol Sci 2021; 22:ijms22115836. [PMID: 34072505 PMCID: PMC8199046 DOI: 10.3390/ijms22115836] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Revised: 05/25/2021] [Accepted: 05/27/2021] [Indexed: 12/20/2022] Open
Abstract
To develop cost-effective and efficient bone substitutes for improved regeneration of bone defects, heparin-modified mineralized collagen scaffolds were functionalized with concentrated, naturally occurring bioactive factor mixtures derived from adipose tissue, platelet-rich plasma and conditioned medium from a hypoxia-treated human bone marrow-derived mesenchymal stem cell line. Besides the analysis of the release kinetics of functionalized scaffolds, the bioactivity of the released bioactive factors was tested with regard to chemotaxis and angiogenic tube formation. Additionally, functionalized scaffolds were seeded with human bone marrow-derived mesenchymal stromal cells (hBM-MSC) and their osteogenic and angiogenic potential was investigated. The release of bioactive factors from the scaffolds was highest within the first 3 days. Bioactivity of the released factors could be confirmed for all bioactive factor mixtures by successful chemoattraction of hBM-MSC in a transwell assay as well as by the formation of prevascular structures in a 2D co-culture system of hBM-MSC and human umbilical vein endothelial cells. The cells seeded directly onto the functionalized scaffolds were able to express osteogenic markers and form tubular networks. In conclusion, heparin-modified mineralized collagen scaffolds could be successfully functionalized with naturally occurring bioactive factor mixtures promoting cell migration and vascularization.
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Jarrell DK, Vanderslice EJ, Lennon ML, Lyons AC, VeDepo MC, Jacot JG. Increasing salinity of fibrinogen solvent generates stable fibrin hydrogels for cell delivery or tissue engineering. PLoS One 2021; 16:e0239242. [PMID: 34010323 PMCID: PMC8133424 DOI: 10.1371/journal.pone.0239242] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Accepted: 03/12/2021] [Indexed: 01/27/2023] Open
Abstract
Fibrin has been used clinically for wound coverings, surgical glues, and cell delivery because of its affordability, cytocompatibility, and ability to modulate angiogenesis and inflammation. However, its rapid degradation rate has limited its usefulness as a scaffold for 3D cell culture and tissue engineering. Previous studies have sought to slow the degradation rate of fibrin with the addition of proteolysis inhibitors or synthetic crosslinkers that require multiple functionalization or polymerization steps. These strategies are difficult to implement in vivo and introduce increased complexity, both of which hinder the use of fibrin in research and medicine. Previously, we demonstrated that additional crosslinking of fibrin gels using bifunctionalized poly(ethylene glycol)-n-hydroxysuccinimide (PEG-NHS) slows the degradation rate of fibrin. In this study, we aimed to further improve the longevity of these PEG-fibrin gels such that they could be used for tissue engineering in vitro or in situ without the need for proteolysis inhibitors. It is well documented that increasing the salinity of fibrin precursor solutions affects the resulting gel morphology. Here, we investigated whether this altered morphology influences the fibrin degradation rate. Increasing the final sodium chloride (NaCl) concentration from 145 mM (physiologic level) to 250 mM resulted in fine, transparent high-salt (HS) fibrin gels that degrade 2–3 times slower than coarse, opaque physiologic-salt (PS) fibrin gels both in vitro (when treated with proteases and when seeded with amniotic fluid stem cells) and in vivo (when injected subcutaneously into mice). Increased salt concentrations did not affect the viability of encapsulated cells, the ability of encapsulated endothelial cells to form rudimentary capillary networks, or the ability of the gels to maintain induced pluripotent stem cells. Finally, when implanted subcutaneously, PS gels degraded completely within one week while HS gels remained stable and maintained viability of seeded dermal fibroblasts. To our knowledge, this is the simplest method reported for the fabrication of fibrin gels with tunable degradation properties and will be useful for implementing fibrin gels in a wide range of research and clinical applications.
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Affiliation(s)
- Dillon K. Jarrell
- Department of Bioengineering, University of Colorado Anschutz Medical Campus, Aurora, Colorado, United States of America
| | - Ethan J. Vanderslice
- Department of Bioengineering, University of Colorado Anschutz Medical Campus, Aurora, Colorado, United States of America
| | - Mallory L. Lennon
- Department of Bioengineering, University of Colorado Anschutz Medical Campus, Aurora, Colorado, United States of America
| | - Anne C. Lyons
- Department of Bioengineering, University of Colorado Anschutz Medical Campus, Aurora, Colorado, United States of America
| | - Mitchell C. VeDepo
- Department of Bioengineering, University of Colorado Anschutz Medical Campus, Aurora, Colorado, United States of America
| | - Jeffrey G. Jacot
- Department of Bioengineering, University of Colorado Anschutz Medical Campus, Aurora, Colorado, United States of America
- Department of Pediatrics, Children’s Hospital Colorado, Aurora, Colorado, United States of America
- * E-mail:
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Yahya EB, Amirul AA, H.P.S. AK, Olaiya NG, Iqbal MO, Jummaat F, A.K. AS, Adnan AS. Insights into the Role of Biopolymer Aerogel Scaffolds in Tissue Engineering and Regenerative Medicine. Polymers (Basel) 2021; 13:1612. [PMID: 34067569 PMCID: PMC8156123 DOI: 10.3390/polym13101612] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 05/04/2021] [Accepted: 05/05/2021] [Indexed: 12/20/2022] Open
Abstract
The global transplantation market size was valued at USD 8.4 billion in 2020 and is expected to grow at a compound annual growth rate of 11.5% over the forecast period. The increasing demand for tissue transplantation has inspired researchers to find alternative approaches for making artificial tissues and organs function. The unique physicochemical and biological properties of biopolymers and the attractive structural characteristics of aerogels such as extremely high porosity, ultra low-density, and high surface area make combining these materials of great interest in tissue scaffolding and regenerative medicine applications. Numerous biopolymer aerogel scaffolds have been used to regenerate skin, cartilage, bone, and even heart valves and blood vessels by growing desired cells together with the growth factor in tissue engineering scaffolds. This review focuses on the principle of tissue engineering and regenerative medicine and the role of biopolymer aerogel scaffolds in this field, going through the properties and the desirable characteristics of biopolymers and biopolymer tissue scaffolds in tissue engineering applications. The recent advances of using biopolymer aerogel scaffolds in the regeneration of skin, cartilage, bone, and heart valves are also discussed in the present review. Finally, we highlight the main challenges of biopolymer-based scaffolds and the prospects of using these materials in regenerative medicine.
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Affiliation(s)
- Esam Bashir Yahya
- School of Industrial Technology, Universiti Sains Malaysia, Penang 11800, Malaysia;
| | - A. A. Amirul
- School of Biological Sciences, Universiti Sains Malaysia, Penang 11800, Malaysia
| | - Abdul Khalil H.P.S.
- School of Industrial Technology, Universiti Sains Malaysia, Penang 11800, Malaysia;
| | - Niyi Gideon Olaiya
- Department of Industrial and Production Engineering, Federal University of Technology, PMB 704 Akure, Nigeria;
| | - Muhammad Omer Iqbal
- Shandong Provincial Key Laboratory of Glycoscience and Glycoengineering, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China;
| | - Fauziah Jummaat
- Management & Science University Medical Centre, University Drive, Off Persiaran Olahraga, Section 13, Shah Alam 40100, Malaysia; (F.J.); (A.S.A.)
| | - Atty Sofea A.K.
- Hospital Seberang Jaya, Jalan Tun Hussein Onn, Seberang Jaya, Permatang Pauh 13700, Malaysia;
| | - A. S. Adnan
- Management & Science University Medical Centre, University Drive, Off Persiaran Olahraga, Section 13, Shah Alam 40100, Malaysia; (F.J.); (A.S.A.)
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Wu Y, Liang T, Hu Y, Jiang S, Luo Y, Liu C, Wang G, Zhang J, Xu T, Zhu L. 3D bioprinting of integral ADSCs-NO hydrogel scaffolds to promote severe burn wound healing. Regen Biomater 2021; 8:rbab014. [PMID: 33936750 PMCID: PMC8071097 DOI: 10.1093/rb/rbab014] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2020] [Revised: 03/04/2021] [Accepted: 03/07/2021] [Indexed: 12/12/2022] Open
Abstract
Severe burns are challenging to heal and result in significant death throughout the world. Adipose-derived mesenchymal stem cells (ADSCs) have emerged as a promising treatment for full-thickness burn healing but are impeded by their low viability and efficiency after grafting in vivo. Nitric oxide (NO) is beneficial in promoting stem cell bioactivity, but whether it can function effectively in vivo is still largely unknown. In this study, we bioprinted an efficient biological scaffold loaded with ADSCs and NO (3D-ADSCs/NO) to evaluate its biological efficacy in promoting severe burn wound healing. The integral 3D-ADSCs/NO hydrogel scaffolds were constructed via 3D bioprinting. Our results shown that 3D-ADSCs/NO can enhance the migration and angiogenesis of Human Umbilical Vein Endothelial Cells (HUVECs). Burn wound healing experiments in mice revealed that 3D-ADSCs/NO accelerated the wound healing by promoting faster epithelialization and collagen deposition. Notably, immunohistochemistry of CD31 suggested an increase in neovascularization, supported by the upregulation of vascular endothelial growth factor (VEGF) mRNA in ADSCs in the 3D biosystem. These findings indicated that 3D-ADSC/NO hydrogel scaffold can promote severe burn wound healing through increased neovascularization via the VEGF signalling pathway. This scaffold may be considered a promising strategy for healing severe burns.
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Affiliation(s)
- Yu Wu
- Department of Plastic and Aesthetic Surgery, The Third Affiliated Hospital of Sun Yat-sen University, No. 600 Tianhe Road, Tianhe District, Guangzhou 510630, China.,East China Institute of Digital Medical Engineering, Shangrao 334000, China
| | - Tangzhao Liang
- Department of Joint and Trauma Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - Ying Hu
- Department of Plastic and Aesthetic Surgery, The Third Affiliated Hospital of Sun Yat-sen University, No. 600 Tianhe Road, Tianhe District, Guangzhou 510630, China
| | - Shihai Jiang
- East China Institute of Digital Medical Engineering, Shangrao 334000, China.,Department of Joint and Trauma Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China.,Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Leipzig 04103, Germany
| | - Yuansen Luo
- Department of Plastic and Aesthetic Surgery, The Third Affiliated Hospital of Sun Yat-sen University, No. 600 Tianhe Road, Tianhe District, Guangzhou 510630, China.,Department of The Second Plastic Surgery, The First People's Hospital of Foshan, Foshan 528000, China
| | - Chang Liu
- Department of Joint and Trauma Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - Guo Wang
- East China Institute of Digital Medical Engineering, Shangrao 334000, China
| | - Jing Zhang
- East China Institute of Digital Medical Engineering, Shangrao 334000, China
| | - Tao Xu
- Department of Mechanical Engineering, Tsinghua University, No. 30 Shuangqing Road, Haidian District, Beijing 100084, China.,Tsinghua-Berkeley Shenzhen Institute, Tsinghua University, Shenzhen 518055, China
| | - Lei Zhu
- Department of Plastic and Aesthetic Surgery, The Third Affiliated Hospital of Sun Yat-sen University, No. 600 Tianhe Road, Tianhe District, Guangzhou 510630, China
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Essa HH, Jasim HS, Kadhim HA. Immunological and Hematological Response to Local Transplantation of Stem Cells in Injured Radial Nerve of Dogs. THE IRAQI JOURNAL OF VETERINARY MEDICINE 2020. [DOI: 10.30539/ijvm.v44i2.976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
The current study was carried out to investigate the immunological and hematological changes due to local transplantation of human umbilical cord-mesenchymal-stem cells (HUC-MSCs) and scaffold-stem cells (SSCs) into the injured radial nerve. Therefore, three equal groups of dogs were subjected to this study; experimental (EG), positive control (PCG) and negative control (NCG). At 1st week, dogs of EG were showed an obvious mobility dysfunction. At 2nd and 4th weeks, there were apparent improvements reported on general and physical activities as well as functional ability of forelimb with the presence of slight lameness that was cured completely at 5th week. Regarding to immunobiomarkers, insignificant differences were showed at 1st week. However, significantly increase in IgG and TNF-α, and decrease in IL-10 was reported at 2nd, 4th, and 6th weeks. Regarding to hematologic parameters, significantly increases were recorded in total WBCs from 2nd week onwards, lymphocytes and neutrophils at 2nd week, monocytes at the 2nd and 4th weeks, and total RBCs at the 8th and 16th weeks. Significant differences were not reported in values of PCV and Hb throughout this study. In conclusion, HUC-MSCs and SSCs confirmed high activities in supporting of immunological and hematological responses, and in restoration of nerve function
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Abstract
A loss of organs or the destruction of tissue leaves wounds to which organisms and living things react differently. Their response depends on the extent of damage, the functional impairment and the biological potential of the organism. Some can completely regenerate lost body parts or tissues, whereas others react by forming scars in the sense of a tissue repair. Overall, the regenerative capacities of the human body are limited and only a few tissues are fully restored when injured. Dental tissues may suffer severe damage due to various influences such as caries or trauma; however, dental care aims at preserving unharmed structures and, thus, the functionality of the teeth. The dentin-pulp complex, a vital compound tissue that is enclosed by enamel, holds many important functions and is particularly worth protecting. It reacts physiologically to deleterious impacts with an interplay of regenerative and reparative processes to ensure its functionality and facilitate healing. While there were initially no biological treatment options available for the irreversible destruction of dentin or pulp, many promising approaches for endodontic regeneration based on the principles of tissue engineering have been developed in recent years. This review describes the regenerative and reparative processes of the dentin-pulp complex as well as the morphological criteria of possible healing results. Furthermore, it summarizes the current knowledge on tissue engineering of dentin and pulp, and potential future developments in this thriving field.
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3D Bioprinting of Human Adipose-Derived Stem Cells and Their Tenogenic Differentiation in Clinical-Grade Medium. Int J Mol Sci 2020; 21:ijms21228694. [PMID: 33218011 PMCID: PMC7698777 DOI: 10.3390/ijms21228694] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 11/11/2020] [Accepted: 11/13/2020] [Indexed: 12/20/2022] Open
Abstract
Defining the best combination of cells and biomaterials is a key challenge for the development of tendon tissue engineering (TE) strategies. Adipose-derived stem cells (ASCs) are ideal candidates for this purpose. In addition, controlled cell-based products adherent to good manufacturing practice (GMP) are required for their clinical scale-up. With this aim, in this study, ASC 3D bioprinting and GMP-compliant tenogenic differentiation were investigated. In detail, primary human ASCs were embedded within a nanofibrillar-cellulose/alginate bioink and 3D-bioprinted into multi-layered square-grid matrices. Bioink viscoelastic properties and scaffold ultrastructural morphology were analyzed by rheology and scanning electron microscopy (SEM). The optimal cell concentration for printing among 3, 6 and 9 × 106 ASC/mL was evaluated in terms of cell viability. ASC morphology was characterized by SEM and F-actin immunostaining. Tenogenic differentiation ability was then evaluated in terms of cell viability, morphology and expression of scleraxis and collagen type III by biochemical induction using BMP-12, TGF-β3, CTGF and ascorbic acid supplementation (TENO). Pro-inflammatory cytokine release was also assessed. Bioprinted ASCs showed high viability and survival and exhibited a tenocyte-like phenotype after biochemical induction, with no inflammatory response to the bioink. In conclusion, we report a first proof of concept for the clinical scale-up of ASC 3D bioprinting for tendon TE.
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Skeletal Muscle Tissue Engineering: Biomaterials-Based Strategies for the Treatment of Volumetric Muscle Loss. Bioengineering (Basel) 2020; 7:bioengineering7030085. [PMID: 32751847 PMCID: PMC7552659 DOI: 10.3390/bioengineering7030085] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 07/17/2020] [Accepted: 07/28/2020] [Indexed: 12/13/2022] Open
Abstract
Millions of Americans suffer from skeletal muscle injuries annually that can result in volumetric muscle loss (VML), where extensive musculoskeletal damage and tissue loss result in permanent functional deficits. In the case of small-scale injury skeletal muscle is capable of endogenous regeneration through activation of resident satellite cells (SCs). However, this is greatly reduced in VML injuries, which remove native biophysical and biochemical signaling cues and hinder the damaged tissue's ability to direct regeneration. The current clinical treatment for VML is autologous tissue transfer, but graft failure and scar tissue formation leave patients with limited functional recovery. Tissue engineering of instructive biomaterial scaffolds offers a promising approach for treating VML injuries. Herein, we review the strategic engineering of biophysical and biochemical cues in current scaffold designs that aid in restoring function to these preclinical VML injuries. We also discuss the successes and limitations of the three main biomaterial-based strategies to treat VML injuries: acellular scaffolds, cell-delivery scaffolds, and in vitro tissue engineered constructs. Finally, we examine several innovative approaches to enhancing the design of the next generation of engineered scaffolds to improve the functional regeneration of skeletal muscle following VML injuries.
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35
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Dias JR, Ribeiro N, Baptista-Silva S, Costa-Pinto AR, Alves N, Oliveira AL. In situ Enabling Approaches for Tissue Regeneration: Current Challenges and New Developments. Front Bioeng Biotechnol 2020. [PMID: 32133354 DOI: 10.3389/fbioe.2020.00085.] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
In situ tissue regeneration can be defined as the implantation of tissue-specific biomaterials (by itself or in combination with cells and/or biomolecules) at the tissue defect, taking advantage of the surrounding microenvironment as a natural bioreactor. Up to now, the structures used were based on particles or gels. However, with the technological progress, the materials' manipulation and processing has become possible, mimicking the damaged tissue directly at the defect site. This paper presents a comprehensive review of current and advanced in situ strategies for tissue regeneration. Recent advances to put in practice the in situ regeneration concept have been mainly focused on bioinks and bioprinting techniques rather than the combination of different technologies to make the real in situ regeneration. The limitation of conventional approaches (e.g., stem cell recruitment) and their poor ability to mimic native tissue are discussed. Moreover, the way of advanced strategies such as 3D/4D bioprinting and hybrid approaches may contribute to overcome the limitations of conventional strategies are highlighted. Finally, the future trends and main research challenges of in situ enabling approaches are discussed considering in vitro and in vivo evidence.
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Affiliation(s)
- Juliana R Dias
- Centre for Rapid and Sustainable Product Development, Polytechnic Institute of Leiria, Leiria, Portugal
| | - Nilza Ribeiro
- CBQF - Centro de Biotecnologia e Química Fina, Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa1, Porto, Portugal
| | - Sara Baptista-Silva
- CBQF - Centro de Biotecnologia e Química Fina, Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa1, Porto, Portugal
| | - Ana Rita Costa-Pinto
- CBQF - Centro de Biotecnologia e Química Fina, Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa1, Porto, Portugal
| | - Nuno Alves
- Centre for Rapid and Sustainable Product Development, Polytechnic Institute of Leiria, Leiria, Portugal
| | - Ana L Oliveira
- CBQF - Centro de Biotecnologia e Química Fina, Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa1, Porto, Portugal
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Dias JR, Ribeiro N, Baptista-Silva S, Costa-Pinto AR, Alves N, Oliveira AL. In situ Enabling Approaches for Tissue Regeneration: Current Challenges and New Developments. Front Bioeng Biotechnol 2020; 8:85. [PMID: 32133354 PMCID: PMC7039825 DOI: 10.3389/fbioe.2020.00085] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 01/30/2020] [Indexed: 12/15/2022] Open
Abstract
In situ tissue regeneration can be defined as the implantation of tissue-specific biomaterials (by itself or in combination with cells and/or biomolecules) at the tissue defect, taking advantage of the surrounding microenvironment as a natural bioreactor. Up to now, the structures used were based on particles or gels. However, with the technological progress, the materials' manipulation and processing has become possible, mimicking the damaged tissue directly at the defect site. This paper presents a comprehensive review of current and advanced in situ strategies for tissue regeneration. Recent advances to put in practice the in situ regeneration concept have been mainly focused on bioinks and bioprinting techniques rather than the combination of different technologies to make the real in situ regeneration. The limitation of conventional approaches (e.g., stem cell recruitment) and their poor ability to mimic native tissue are discussed. Moreover, the way of advanced strategies such as 3D/4D bioprinting and hybrid approaches may contribute to overcome the limitations of conventional strategies are highlighted. Finally, the future trends and main research challenges of in situ enabling approaches are discussed considering in vitro and in vivo evidence.
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Affiliation(s)
- Juliana R. Dias
- Centre for Rapid and Sustainable Product Development, Polytechnic Institute of Leiria, Leiria, Portugal
| | - Nilza Ribeiro
- CBQF – Centro de Biotecnologia e Química Fina, Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa1, Porto, Portugal
| | - Sara Baptista-Silva
- CBQF – Centro de Biotecnologia e Química Fina, Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa1, Porto, Portugal
| | - Ana Rita Costa-Pinto
- CBQF – Centro de Biotecnologia e Química Fina, Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa1, Porto, Portugal
| | - Nuno Alves
- Centre for Rapid and Sustainable Product Development, Polytechnic Institute of Leiria, Leiria, Portugal
| | - Ana L. Oliveira
- CBQF – Centro de Biotecnologia e Química Fina, Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa1, Porto, Portugal
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Baptista M, Joukhdar H, Alcala-Orozco CR, Lau K, Jiang S, Cui X, He S, Tang F, Heu C, Woodfield TBF, Lim KS, Rnjak-Kovacina J. Silk fibroin photo-lyogels containing microchannels as a biomaterial platform for in situ tissue engineering. Biomater Sci 2020; 8:7093-7105. [DOI: 10.1039/d0bm01010c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Silk photo-lyogels fabricated by di-tyrosine photo-crosslinking and ice-templating silk fibroin on 3D printed templates toward in situ tissue engineering applications.
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Abdulghani S, Mitchell GR. Biomaterials for In Situ Tissue Regeneration: A Review. Biomolecules 2019; 9:E750. [PMID: 31752393 PMCID: PMC6920773 DOI: 10.3390/biom9110750] [Citation(s) in RCA: 111] [Impact Index Per Article: 22.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 11/15/2019] [Accepted: 11/17/2019] [Indexed: 12/11/2022] Open
Abstract
This review focuses on a somewhat unexplored strand of regenerative medicine, that is in situ tissue engineering. In this approach manufactured scaffolds are implanted in the injured region for regeneration within the patient. The scaffold is designed to attract cells to the required volume of regeneration to subsequently proliferate, differentiate, and as a consequence develop tissue within the scaffold which in time will degrade leaving just the regenerated tissue. This review highlights the wealth of information available from studies of ex-situ tissue engineering about the selection of materials for scaffolds. It is clear that there are great opportunities for the use of additive manufacturing to prepare complex personalized scaffolds and we speculate that by building on this knowledge and technology, the development of in situ tissue engineering could rapidly increase. Ex-situ tissue engineering is handicapped by the need to develop the tissue in a bioreactor where the conditions, however optimized, may not be optimum for accelerated growth and maintenance of the cell function. We identify that in both methodologies the prospect of tissue regeneration has created much promise but delivered little outside the scope of laboratory-based experiments. We propose that the design of the scaffolds and the materials selected remain at the heart of developments in this field and there is a clear need for predictive modelling which can be used in the design and optimization of materials and scaffolds.
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Affiliation(s)
- Saba Abdulghani
- Centre for Rapid and Sustainable Product Development, Polytechnic of Leiria, 2430-080 Marinha Grande, Portugal;
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Abstract
This review focuses on a somewhat unexplored strand of regenerative medicine, that is in situ tissue engineering. In this approach manufactured scaffolds are implanted in the injured region for regeneration within the patient. The scaffold is designed to attract cells to the required volume of regeneration to subsequently proliferate, differentiate, and as a consequence develop tissue within the scaffold which in time will degrade leaving just the regenerated tissue. This review highlights the wealth of information available from studies of ex-situ tissue engineering about the selection of materials for scaffolds. It is clear that there are great opportunities for the use of additive manufacturing to prepare complex personalized scaffolds and we speculate that by building on this knowledge and technology, the development of in situ tissue engineering could rapidly increase. Ex-situ tissue engineering is handicapped by the need to develop the tissue in a bioreactor where the conditions, however optimized, may not be optimum for accelerated growth and maintenance of the cell function. We identify that in both methodologies the prospect of tissue regeneration has created much promise but delivered little outside the scope of laboratory-based experiments. We propose that the design of the scaffolds and the materials selected remain at the heart of developments in this field and there is a clear need for predictive modelling which can be used in the design and optimization of materials and scaffolds.
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Kurniawan NA. The ins and outs of engineering functional tissues and organs: evaluating the in-vitro and in-situ processes. Curr Opin Organ Transplant 2019; 24:590-597. [PMID: 31389812 PMCID: PMC6749960 DOI: 10.1097/mot.0000000000000690] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
PURPOSE OF REVIEW For many disorders that result in loss of organ function, the only curative treatment is organ transplantation. However, this approach is severely limited by the shortage of donor organs. Tissue engineering has emerged as an alternative solution to this issue. This review discusses the concept of tissue engineering from a technical viewpoint and summarizes the state of the art as well as the current shortcomings, with the aim of identifying the key lessons that we can learn to further advance the engineering of functional tissues and organs. RECENT FINDINGS A plethora of tissue-engineering strategies have been recently developed. Notably, these strategies put different emphases on the in-vitro and in-situ processes (i.e. preimplantation and postimplantation) that take place during tissue formation. Biophysical and biomechanical interactions between the cells and the scaffold/biomaterial play a crucial role in all steps and have started to be exploited to steer tissue regeneration. SUMMARY Recent works have demonstrated the need to better understand the in-vitro and in-situ processes during tissue formation, in order to regenerate complex, functional organs with desired cellular organization and tissue architecture. A concerted effort from both fundamental and tissue-specific research has the potential to accelerate progress in the field.
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Affiliation(s)
- Nicholas A. Kurniawan
- Department of Biomedical Engineering
- Institute for Complex Molecular Systems, Eindhoven University of Technology, Eindhoven, The Netherlands
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Wu J, Zheng K, Huang X, Liu J, Liu H, Boccaccini AR, Wan Y, Guo X, Shao Z. Thermally triggered injectable chitosan/silk fibroin/bioactive glass nanoparticle hydrogels for in-situ bone formation in rat calvarial bone defects. Acta Biomater 2019; 91:60-71. [PMID: 30986530 DOI: 10.1016/j.actbio.2019.04.023] [Citation(s) in RCA: 105] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 03/24/2019] [Accepted: 04/10/2019] [Indexed: 02/06/2023]
Abstract
Copper-containing bioactive glass nanoparticles (Cu-BG NPs) with designed compositions and sizes were synthesized and incorporated into chitosan (CH)/silk fibroin (SF)/glycerophosphate (GP) composites to prepare injectable hydrogels for cell-free bone repair. The resulting Cu-BG/CH/SF/GP gels were found to exhibit well-defined injectability and to undergo rapid gelation at physiological temperature and pH. They were highly porous and showed the ability to administer Si, Ca and Cu ions at their respective safe doses in a sustained and controlled manner. In vitro studies revealed that the gels supported the growth of seeded MC3T3-E1 and human umbilical vein endothelial cells, and effectively induced them toward osteogenesis and angiogenesis, respectively. In vivo bone repair based on a critical-size rat calvarial bone defect model demonstrated that the optimal Cu-BG/CH/SF/GP gel was able to fully restore the bone defect with formation of vascularized bone tissue and mineralized collagen deposition during a treatment period of 8 weeks without utilization of any cells and/or growth factors. The results suggest that the presently developed Cu-BG/CH/SF/GP composite hydrogels have great potential and translation ability for bone regeneration owing to their thermo-sensitive properties, cell-free bioactivity, and cost-effectiveness. STATEMENT OF SIGNIFICANCE: Hydrogels loaded with cells and/or growth factors exhibit potential in bone repair. However, they have been facing obstacles related to the clinic translation. Here, a novel type of hydrogel system consisting of copper-containing bioactive glass nanoparticles and chitosan/silk fibroin composite was developed. These gels showed injectability and thermally triggered in situ gelation properties and were able to administer the release of ions at safe but effective doses in a controlled manner while inducing the seeded cells toward osteogenesis and angiogenesis. The optimal gel showed the ability to fully repair critical-size rat calvarial bone defects without involving time consuming cell processing and/or the use of expensive growth factors, confirming that this novel hydrogel system has great potential for translation to the clinic.
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van Uden S, Vanerio N, Catto V, Bonandrini B, Tironi M, Figliuzzi M, Remuzzi A, Kock L, Redaelli ACL, Greco FG, Riboldi SA. A novel hybrid silk-fibroin/polyurethane three-layered vascular graft: towards in situ tissue-engineered vascular accesses for haemodialysis. ACTA ACUST UNITED AC 2019; 14:025007. [PMID: 30620939 DOI: 10.1088/1748-605x/aafc96] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Clinically available alternatives of vascular access for long-term haemodialysis-currently limited to native arteriovenous fistulae and synthetic grafts-suffer from several drawbacks and are associated to high failure rates. Bioprosthetic grafts and tissue-engineered blood vessels are costly alternatives without clearly demonstrated increased performance. In situ tissue engineering could be the ideal approach to provide a vascular access that profits from the advantages of vascular grafts in the short-term (e.g. early cannulation) and of fistulae in the long-term (e.g. high success rates driven by biointegration). Hence, in this study a three-layered silk fibroin/polyurethane vascular graft was developed by electrospinning to be applied as long-term haemodialysis vascular access pursuing a 'hybrid' in situ engineering approach (i.e. based on a semi-degradable scaffold). This Silkothane® graft was characterized concerning morphology, mechanics, physical properties, blood contact and vascular cell adhesion/viability. The full three-layered graft structure, influenced by the polyurethane presence, ensured mechanical properties that are a determinant factor for the success of a vascular access (e.g. vein-graft compliance matching). The Silkothane® graft demonstrated early cannulation potential in line with self-sealing commercial synthetic arteriovenous grafts, and a degradability driven by enzymatic activity. Moreover, the fibroin-only layers and extracellular matrix-like morphology, presented by the graft, revealed to be crucial in providing a non-haemolytic character, long clotting time, and favourable adhesion of human umbilical vein endothelial cells with increasing viability after 3 and 7 d. Accordingly, the proposed approach may represent a step forward towards an in situ engineered hybrid vascular access with potentialities for vein-graft anastomosis stability, early cannulation, and biointegration.
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Affiliation(s)
- Sebastião van Uden
- Bioengineering Laboratories S.r.l., Cantù, Italy. Dipartimento di Elettronica Informazione e Bioingegneria, Politecnico di Milano, Milan, Italy
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Wang Y, Chen S, Yan Z, Pei M. A prospect of cell immortalization combined with matrix microenvironmental optimization strategy for tissue engineering and regeneration. Cell Biosci 2019; 9:7. [PMID: 30627420 PMCID: PMC6321683 DOI: 10.1186/s13578-018-0264-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Accepted: 12/21/2018] [Indexed: 12/20/2022] Open
Abstract
Cellular senescence is a major hurdle for primary cell-based tissue engineering and regenerative medicine. Telomere erosion, oxidative stress, the expression of oncogenes and the loss of tumor suppressor genes all may account for the cellular senescence process with the involvement of various signaling pathways. To establish immortalized cell lines for research and clinical use, strategies have been applied including internal genomic or external matrix microenvironment modification. Considering the potential risks of malignant transformation and tumorigenesis of genetic manipulation, environmental modification methods, especially the decellularized cell-deposited extracellular matrix (dECM)-based preconditioning strategy, appear to be promising for tissue engineering-aimed cell immortalization. Due to few review articles focusing on this topic, this review provides a summary of cell senescence and immortalization and discusses advantages and limitations of tissue engineering and regeneration with the use of immortalized cells as well as a potential rejuvenation strategy through combination with the dECM approach.
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Affiliation(s)
- Yiming Wang
- 1Stem Cell and Tissue Engineering Laboratory, Department of Orthopaedics, West Virginia University, PO Box 9196, 64 Medical Center Drive, Morgantown, WV 26506-9196 USA.,2Department of Orthopaedics, Zhongshan Hospital of Fudan University, 180 Fenglin Road, Shanghai, 200032 China
| | - Song Chen
- 3Department of Orthopaedics, Chengdu Military General Hospital, Chengdu, 610083 Sichuan China
| | - Zuoqin Yan
- 2Department of Orthopaedics, Zhongshan Hospital of Fudan University, 180 Fenglin Road, Shanghai, 200032 China
| | - Ming Pei
- 1Stem Cell and Tissue Engineering Laboratory, Department of Orthopaedics, West Virginia University, PO Box 9196, 64 Medical Center Drive, Morgantown, WV 26506-9196 USA.,4WVU Cancer Institute, Robert C. Byrd Health Sciences Center, West Virginia University, Morgantown, WV 26506 USA
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Xing F, Li L, Liu M, Duan X, Long Y, Xiang Z. [The application and research progress of in-situ tissue engineering technology in bone and cartilage repair]. ZHONGGUO XIU FU CHONG JIAN WAI KE ZA ZHI = ZHONGGUO XIUFU CHONGJIAN WAIKE ZAZHI = CHINESE JOURNAL OF REPARATIVE AND RECONSTRUCTIVE SURGERY 2018; 32:1358-1364. [PMID: 30215487 DOI: 10.7507/1002-1892.201712118] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Objective To review the application and research progress of
in-situ tissue engineering technology in bone and cartilage repair. Methods The original articles about
in-situ tissue engineering technology in bone and cartilage repair were extensively reviewed and analyzed. Results In-situ tissue engineering have been shown to be effective in repairing bone defects and cartilage defects, but biological mechanisms are inadequate. At present, most of researches are mainly focused on animal experiments, and the effect of clinical repair need to be further studied. Conclusion In-situ tissue engineering technology has wide application prospects in bone and cartilage tissue engineering. However, further study on the mechanism of related cytokines need to be conducted.
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Affiliation(s)
- Fei Xing
- Department of Orthopedics, West China Hospital, Sichuan University, Chengdu Sichuan, 610041, P.R.China
| | - Lang Li
- Department of Orthopedics, West China Hospital, Sichuan University, Chengdu Sichuan, 610041, P.R.China
| | - Ming Liu
- Department of Orthopedics, West China Hospital, Sichuan University, Chengdu Sichuan, 610041, P.R.China
| | - Xin Duan
- Department of Orthopedics, West China Hospital, Sichuan University, Chengdu Sichuan, 610041, P.R.China
| | - Ye Long
- Department of Orthopedics, West China Hospital, Sichuan University, Chengdu Sichuan, 610041, P.R.China
| | - Zhou Xiang
- Department of Orthopedics, West China Hospital, Sichuan University, Chengdu Sichuan, 610041,
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He XT, Wang J, Li X, Yin Y, Sun HH, Chen FM. The Critical Role of Cell Homing in Cytotherapeutics and Regenerative Medicine. ADVANCED THERAPEUTICS 2018. [DOI: 10.1002/adtp.201800098] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Xiao-Tao He
- State Key Laboratory of Military Stomatology; School of Stomatology; Fourth Military Medical University; 710032 Xi'an P. R. China
- National Clinical Research Center for Oral Diseases; Department of Periodontology; School of Stomatology; Fourth Military Medical University; 710032 Xi'an P. R. China
- Shaanxi Engineering Research Center for Dental Materials, and Advanced Manufacture; Biomaterials Unit; School of Stomatology; Fourth Military Medical University; 710032 Xi'an P. R. China
| | - Jia Wang
- State Key Laboratory of Military Stomatology; School of Stomatology; Fourth Military Medical University; 710032 Xi'an P. R. China
- Shaanxi Engineering Research Center for Dental Materials, and Advanced Manufacture; Biomaterials Unit; School of Stomatology; Fourth Military Medical University; 710032 Xi'an P. R. China
| | - Xuan Li
- State Key Laboratory of Military Stomatology; School of Stomatology; Fourth Military Medical University; 710032 Xi'an P. R. China
- National Clinical Research Center for Oral Diseases; Department of Periodontology; School of Stomatology; Fourth Military Medical University; 710032 Xi'an P. R. China
- Shaanxi Engineering Research Center for Dental Materials, and Advanced Manufacture; Biomaterials Unit; School of Stomatology; Fourth Military Medical University; 710032 Xi'an P. R. China
| | - Yuan Yin
- State Key Laboratory of Military Stomatology; School of Stomatology; Fourth Military Medical University; 710032 Xi'an P. R. China
- Shaanxi Engineering Research Center for Dental Materials, and Advanced Manufacture; Biomaterials Unit; School of Stomatology; Fourth Military Medical University; 710032 Xi'an P. R. China
| | - Hai-Hua Sun
- National Clinical Research Center for Oral Diseases; Department of Periodontology; School of Stomatology; Fourth Military Medical University; 710032 Xi'an P. R. China
| | - Fa-Ming Chen
- State Key Laboratory of Military Stomatology; School of Stomatology; Fourth Military Medical University; 710032 Xi'an P. R. China
- National Clinical Research Center for Oral Diseases; Department of Periodontology; School of Stomatology; Fourth Military Medical University; 710032 Xi'an P. R. China
- Shaanxi Engineering Research Center for Dental Materials, and Advanced Manufacture; Biomaterials Unit; School of Stomatology; Fourth Military Medical University; 710032 Xi'an P. R. China
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Schmidt MM, Hoang T, Iaizzo PA. The Ability to Reproducibly Record Cardiac Action Potentials From Multiple Anatomic Locations: Endocardially and Epicardially, In Situ and In Vitro. IEEE Trans Biomed Eng 2018; 66:159-164. [PMID: 29993414 DOI: 10.1109/tbme.2018.2835777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE For cardiac arrhythmia mapping and ablation procedures, the ability to record focal cardiac action potentials could aid in precisely identifying lesions, scarred tissue, and/or arrhythmic foci. Our study objective was to validate the electrophysiologic properties of a routinely employed large mammalian in vitro working heart model. METHODS Monophasic action potentials (MAPs) were recorded from 18 swine hearts during viable hemodynamic function both in situ (postmedian sternotomy) and in vitro (using Visible Heart methodologies). We placed specially designed mapping catheters in epicardial and endocardial locations. High-quality MAP signals were recorded for up to 2 h, and MATLAB was utilized to evaluate relative duration and temporal/regional changes in waveform morphology. RESULTS MAPs were reproducibly recorded from both epicardial and endocardial locations in situ and in vitro. No significant differences were noted in right atrial endocardial, right ventricular endocardial, right ventricular epicardial, or left atrial epicardial waveforms, when baseline recordings were compared to all other in situ and in vitro time points. Furthermore, MAP duration between right ventricular endocardial and epicardial waveforms was not significantly different, in situ or in vitro. CONCLUSION The use of in vitro models like the Visible Heart is considered invaluable for the study of cardiac arrhythmias, the development of novel therapies, and/or preclinical testing of future cardiac mapping catheters and systems. SIGNIFICANCE Preclinical studies assessing in situ and/or in vitro recorded cardiac monophasic action potentials could be critical for the future development and validation of cardiac devices.
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Bas O, Catelas I, De-Juan-Pardo EM, Hutmacher DW. The quest for mechanically and biologically functional soft biomaterials via soft network composites. Adv Drug Deliv Rev 2018; 132:214-234. [PMID: 30048654 DOI: 10.1016/j.addr.2018.07.015] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Revised: 07/18/2018] [Accepted: 07/20/2018] [Indexed: 12/15/2022]
Abstract
Developing multifunctional soft biomaterials capable of addressing all the requirements of the complex tissue regeneration process is a multifaceted problem. In order to tackle the current challenges, recent research efforts are increasingly being directed towards biomimetic design concepts that can be translated into soft biomaterials via advanced manufacturing technologies. Among those, soft network composites consisting of a continuous hydrogel matrix and a reinforcing fibrous network closely resemble native soft biological materials in terms of design and composition as well as physicochemical properties. This article reviews soft network composite systems with a particular emphasis on the design, biomaterial and fabrication aspects within the context of soft tissue engineering and drug delivery applications.
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Affiliation(s)
- Onur Bas
- ARC Industrial Transformation Training Centre in Additive Biomanufacturing, Queensland University of Technology (QUT), Kelvin Grove, Brisbane, QLD 4059, Australia; Centre in Regenerative Medicine, Institute of Health and Biomedical Innovation, Queensland University of Technology (QUT), Brisbane, QLD 4059, Australia; School of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty (SEF), Queensland University of Technology (QUT), Brisbane, QLD 4001, Australia
| | - Isabelle Catelas
- School of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty (SEF), Queensland University of Technology (QUT), Brisbane, QLD 4001, Australia; Department of Mechanical Engineering, University of Ottawa, Ottawa, ON K1N 6N5, Canada
| | - Elena M De-Juan-Pardo
- ARC Industrial Transformation Training Centre in Additive Biomanufacturing, Queensland University of Technology (QUT), Kelvin Grove, Brisbane, QLD 4059, Australia; School of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty (SEF), Queensland University of Technology (QUT), Brisbane, QLD 4001, Australia
| | - Dietmar W Hutmacher
- ARC Industrial Transformation Training Centre in Additive Biomanufacturing, Queensland University of Technology (QUT), Kelvin Grove, Brisbane, QLD 4059, Australia; Centre in Regenerative Medicine, Institute of Health and Biomedical Innovation, Queensland University of Technology (QUT), Brisbane, QLD 4059, Australia; School of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty (SEF), Queensland University of Technology (QUT), Brisbane, QLD 4001, Australia; Institute for Advanced Study, Technische Universität München, 85748 Garching, Germany.
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Kumar N, Joisher H, Ganguly A. Polymeric Scaffolds for Pancreatic Tissue Engineering: A Review. Rev Diabet Stud 2018; 14:334-353. [PMID: 29590227 PMCID: PMC6230446 DOI: 10.1900/rds.2017.14.334] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Revised: 01/24/2018] [Accepted: 02/05/2018] [Indexed: 12/17/2022] Open
Abstract
In recent years, there has been an alarming increase in the incidence of diabetes, with one in every eleven individuals worldwide suffering from this debilitating disease. As the available treatment options fail to reduce disease progression, novel avenues such as the bioartificial pancreas are being given serious consideration. In the past decade, the research focus has shifted towards the field of tissue engineering, which helps to design biological substitutes for repair and replacement of non-functional or damaged organs. Scaffolds constitute an integral part of tissue engineering; they have been shown to mimic the native extracellular matrix, thereby supporting cell viability and proliferation. This review offers a novel compilation of the recent advances in polymeric scaffolds, which are used for pancreatic tissue engineering. Furthermore, in this article, the design strategies for bioartificial pancreatic constructs and their future applications in cell-based therapy are discussed.
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Affiliation(s)
| | | | - Anasuya Ganguly
- Department of Biological Sciences, BITS-Pilani, K.K Birla Goa Campus, Goa, India 403726
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Nagarajan N, Dupret-Bories A, Karabulut E, Zorlutuna P, Vrana NE. Enabling personalized implant and controllable biosystem development through 3D printing. Biotechnol Adv 2018; 36:521-533. [PMID: 29428560 DOI: 10.1016/j.biotechadv.2018.02.004] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Revised: 12/27/2017] [Accepted: 02/02/2018] [Indexed: 12/24/2022]
Abstract
The impact of additive manufacturing in our lives has been increasing constantly. One of the frontiers in this change is the medical devices. 3D printing technologies not only enable the personalization of implantable devices with respect to patient-specific anatomy, pathology and biomechanical properties but they also provide new opportunities in related areas such as surgical education, minimally invasive diagnosis, medical research and disease models. In this review, we cover the recent clinical applications of 3D printing with a particular focus on implantable devices. The current technical bottlenecks in 3D printing in view of the needs in clinical applications are explained and recent advances to overcome these challenges are presented. 3D printing with cells (bioprinting); an exciting subfield of 3D printing, is covered in the context of tissue engineering and regenerative medicine and current developments in bioinks are discussed. Also emerging applications of bioprinting beyond health, such as biorobotics and soft robotics, are introduced. As the technical challenges related to printing rate, precision and cost are steadily being solved, it can be envisioned that 3D printers will become common on-site instruments in medical practice with the possibility of custom-made, on-demand implants and, eventually, tissue engineered organs with active parts developed with biorobotics techniques.
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Affiliation(s)
- Neerajha Nagarajan
- Bioengineering Graduate Program, University of Notre Dame, Notre Dame 46556, USA
| | - Agnes Dupret-Bories
- Institut Claudius Regaud, Institut Universitaire du Cancer Toulouse-Oncopole, 1 avenue Irène Joliot-Curie, 31059 Toulouse, Cedex 9, France
| | - Erdem Karabulut
- Chalmers University of Technology, Department of Chemistry and Chemical Engineering, Biopolymer Technology, Göteborg 412 96, Sweden; Wallenberg Wood Science Center, Chalmers University of Technology, Göteborg 412 96, Sweden
| | - Pinar Zorlutuna
- Bioengineering Graduate Program, University of Notre Dame, Notre Dame 46556, USA; Department of Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame, 46556, USA.
| | - Nihal Engin Vrana
- Institut National de la Santé et de la Recherche Médicale, INSERM Unité 1121, 11 Rue Humann, 67085 Strasbourg, France; Protip Medical, 8 Place de l'Hopital, 67000 Strasbourg, France; Université de Strasbourg, Faculté de Chirurgie Dentaire, Fédération de Médecine Translationnelle de Strasbourg, Fédération de Recherche Matériaux et Nanosciences Grand Est (FRMNGE), P. le A. Moro 5, 67000 Strasbourg, France.
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Liu X, Xie Y, Liu R, Zhang R, Yan H, Yang X, Huang Q, He W, Yu B, Feng Q, Mi S, Cai Q. A cyclo-trimer of acetonitrile combining fluorescent property with ability to induce osteogenesis and its potential as multifunctional biomaterial. Acta Biomater 2018; 65:163-173. [PMID: 29061377 DOI: 10.1016/j.actbio.2017.10.031] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Revised: 09/17/2017] [Accepted: 10/17/2017] [Indexed: 12/24/2022]
Abstract
A biomaterial combining fluorescent property with ability to induce osteogenesis can serve as an ideal multifunctional scaffold in bone tissue engineering. However, the frequently used fluorescent agents can only serve as imaging probes. The polymer or oligomer with a conjugated system containing nitrogen atoms will fulfill these criteria. In this study, a cyclo-trimer of acetonitrile is synthesized using a facile method, which is proved to be 4-amino-2,6-dimethylpyrimidine. The cyclo-trimer of acetonitrile demonstrates strong intrinsic photoluminescence and has the potential for in vivo imaging. The cyclo-trimer of acetonitrile shows no toxicity both in vitro and in vivo. Moreover, the cyclo-trimer of acetonitrile significantly promotes the osteogenesis of SaOS-2 cells by improving alkaline phosphatase activity, collagen type I and osteocalcin expression, as well as expressions of osteoblastic genes, and enhances the matrix mineralization of rBMSCs. Thus, the cyclo-trimer of acetonitrile synthesized in present study illustrates the employment of this kind multifunctional biomaterial in bone tissue engineering and may offer great potential in biomedical applications where bioimaging and osteogenesis are both required. STATEMENT OF SIGNIFICANCE A conjugated cyclo-trimer of acetonitrile combining intrinsic fluorescent property with ability to induce osteogenesis was reported. Different from the traditional fluorescent dye or quantum dots, which are just "imaging agents", the cyclo-trimer of acetonitrile can serve as a multifunctional biomaterial and offer great potential in biomedical applications where bioimaging and osteogenesis are both required. To our best knowledge, the fluorescent property, especially fluorescent property in vivo and the ability of this molecule to induce osteogenesis have not been reported before. Our work illustrates the employment of this kind multifunctional biomaterial in bone tissue engineering and will highlight the importance of multifunctional biomaterial in biomedical applications.
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