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Soliman BG, Longoni A, Major GS, Lindberg GCJ, Choi YS, Zhang YS, Woodfield TBF, Lim KS. Harnessing Macromolecular Chemistry to Design Hydrogel Micro- and Macro-Environments. Macromol Biosci 2024; 24:e2300457. [PMID: 38035637 DOI: 10.1002/mabi.202300457] [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: 10/07/2023] [Revised: 11/16/2023] [Indexed: 12/02/2023]
Abstract
Cell encapsulation within three-dimensional hydrogels is a promising approach to mimic tissues. However, true biomimicry of the intricate microenvironment, biophysical and biochemical gradients, and the macroscale hierarchical spatial organizations of native tissues is an unmet challenge within tissue engineering. This review provides an overview of the macromolecular chemistries that have been applied toward the design of cell-friendly hydrogels, as well as their application toward controlling biophysical and biochemical bulk and gradient properties of the microenvironment. Furthermore, biofabrication technologies provide the opportunity to simultaneously replicate macroscale features of native tissues. Biofabrication strategies are reviewed in detail with a particular focus on the compatibility of these strategies with the current macromolecular toolkit described for hydrogel design and the challenges associated with their clinical translation. This review identifies that the convergence of the ever-expanding macromolecular toolkit and technological advancements within the field of biofabrication, along with an improved biological understanding, represents a promising strategy toward the successful tissue regeneration.
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Affiliation(s)
- Bram G Soliman
- School of Materials Science and Engineering, University of New South Wales, Sydney, 2052, Australia
| | - Alessia Longoni
- Department of Orthopedics, University Medical Center Utrecht, Utrecht, 3584CX, The Netherlands
| | - Gretel S Major
- Department of Orthopedic Surgery and Musculoskeletal Medicine, University of Otago, Christchurch, 8011, New Zealand
| | - Gabriella C J Lindberg
- Phil and Penny Knight Campus for Accelerating Scientific Impact Department of Bioengineering, University of Oregon, Eugene, OR, 97403, USA
| | - Yu Suk Choi
- School of Human Sciences, The University of Western Australia, Perth, 6009, Australia
| | - Yu Shrike Zhang
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA, 02115, USA
| | - Tim B F Woodfield
- Department of Orthopedic Surgery and Musculoskeletal Medicine, University of Otago, Christchurch, 8011, New Zealand
| | - Khoon S Lim
- Department of Orthopedic Surgery and Musculoskeletal Medicine, University of Otago, Christchurch, 8011, New Zealand
- School of Medical Sciences, University of Sydney, Sydney, 2006, Australia
- Charles Perkins Centre, University of Sydney, Sydney, 2006, Australia
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2
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Ciprandi G, Bonini S, Schiavetti I, Damiani V. A combined treatment for patients with dry eye and associated laryngopharyngeal reflux: a real-life approach. Int J Ophthalmol 2023; 16:1616-1622. [PMID: 37854363 PMCID: PMC10559018 DOI: 10.18240/ijo.2023.10.09] [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: 06/07/2023] [Accepted: 07/25/2023] [Indexed: 10/20/2023] Open
Abstract
AIM To evaluate the efficacy and tolerability of administering a combined therapy in patients with dry eye syndrome (DES) and associated laryngopharyngeal reflux (LPR). METHODS The study was retrospective, open, observational, and conducted in a real-life setting. Patients had pathological symptom assessment in dry eye (SANDE) and reflux symptom index (RSI) at baseline. Patients were re-assessed after 1mo and at the end of treatment. The treatment consisted of a three-month course based on the combined therapy: Gastroftal eye drops, one drop three times a day, and Gastroftal tablets, two tablets after lunch and two tablets after dinner. Tear break-up-time (TBUT) test, Schirmer test, RSI, and SANDE questionnaire were evaluated. RESULTS The study included 253 patients. The mean age was 58±11.19y. TBUT test score and Schirmer's test significantly increased (both P<0.001) after 1mo and at the end of treatment. The RSI score and SANDE scores significantly decreased (both P<0.001) after 1mo and at the end of treatment. CONCLUSION The current, retrospective, and open study shows that combined therapy using Gastroftal eye drops and tablets could represent a valuable option in managing patients with DES associated with LPR.
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Affiliation(s)
- Giorgio Ciprandi
- Allergy Clinic, Casa di Cura Villa Montallegro, Genoa 16145, Italy
| | - Stefano Bonini
- Ophthalmology Complex Operative Unit, University Campus Bio-Medico, Rome 00100, Italy
| | - Irene Schiavetti
- Health Science Department, University of Genoa, Genoa 16142, Italy
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3
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Besiri IN, Goudoulas TB, Fattahi E, Becker T. Experimental Advances in the Real-Time Recording of Cross-Linking Alginate In Situ Gelation: A Review. Polymers (Basel) 2023; 15:2875. [PMID: 37447520 DOI: 10.3390/polym15132875] [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: 06/06/2023] [Revised: 06/26/2023] [Accepted: 06/27/2023] [Indexed: 07/15/2023] Open
Abstract
Alginate-based hydrogels are promising smart materials widely employed in the food, bioengineering, and energy sectors. The development and optimization of their production require a thorough knowledge of gelation. In recent years, advanced experimental procedures have been developed for real-time cross-linking alginate reaction monitoring. Novel methods, such as customized rheometric setups, enable the recording of mechanical properties and morphological changes during hydrogel formation. These innovative techniques provide important insights into the gelation stages, the reaction rate, the diffusion of cross-linker to polymer chains, and the homogeneity of the gelling structures. Based on real-time experimental data, kinetic models are developed to enhance comprehension of the reaction mechanism and, eventually, to predict the gelation progress. The aim is to enable better control of the characterization of both the complex gelation and the propagated structures. This review aspires to present a comprehensive overview and evaluation of the breakthrough innovations of the real-time in situ recording of cross-linking alginate hydrogels and bead formation. A detailed analysis of the pioneering experimental developments provides a deep comprehension of the alginate gelation, including the parameters controlling the reaction.
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Affiliation(s)
- Ioanna N Besiri
- Research Group of Fluid Dynamics, Chair of Brewing and Beverage Technology, TUM School of Life Sciences, Technical University of Munich, Weihenstephaner Steig 20, 85354 Freising, Germany
| | - Thomas B Goudoulas
- Research Group of Fluid Dynamics, Chair of Brewing and Beverage Technology, TUM School of Life Sciences, Technical University of Munich, Weihenstephaner Steig 20, 85354 Freising, Germany
| | - Ehsan Fattahi
- Research Group of Fluid Dynamics, Chair of Brewing and Beverage Technology, TUM School of Life Sciences, Technical University of Munich, Weihenstephaner Steig 20, 85354 Freising, Germany
| | - Thomas Becker
- Research Group of Fluid Dynamics, Chair of Brewing and Beverage Technology, TUM School of Life Sciences, Technical University of Munich, Weihenstephaner Steig 20, 85354 Freising, Germany
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4
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Hammersen T, Buchert J, Zietzschmann S, Diederichs S, Richter W. Inverse Regulation of Cartilage Neogenesis at Physiologically Relevant Calcium Conditions by Human Articular Chondrocytes and Mesenchymal Stromal Cells. Cells 2023; 12:1659. [PMID: 37371129 DOI: 10.3390/cells12121659] [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: 05/19/2023] [Revised: 06/07/2023] [Accepted: 06/16/2023] [Indexed: 06/29/2023] Open
Abstract
Elaborate bioreactor cultivation or expensive growth factor supplementation can enhance extracellular matrix production in engineered neocartilage to provide sufficient mechanical resistance. We here investigated whether raising extracellular calcium levels in chondrogenic cultures to physiologically relevant levels would provide a simple and inexpensive alternative to enhance cartilage neogenesis from human articular chondrocytes (AC) or bone marrow-derived mesenchymal stromal cells (BMSC). Interestingly, AC and BMSC-derived chondrocytes showed an opposite response to a calcium increase from 1.8 mM to 8 mM by which glycosaminoglycan (GAG) and collagen type II production were elevated during BMSC chondrogenesis but depressed in AC, leading to two-fold higher GAG/DNA values in BMSC-based neocartilage compared to the AC group. According to control treatments with Mg2+ or sucrose, these effects were specific for CaCl2 rather than divalent cations or osmolarity. Importantly, undesired pro-hypertrophic traits were not stimulated by calcium treatment. Specific induction of PTHrP mRNA and protein by 8.0mM calcium only in AC, along with negative effects of recombinant PTHrP1-34 on cartilage matrix production, suggested that the PTHrP pathway contributed to the detrimental effects in AC-based neocartilage. Altogether, raising extracellular calcium levels was discovered as a novel, simple and inexpensive stimulator for BMSC-based cartilage neogenesis without the need for special bioreactors, whereas such conditions should be avoided for AC.
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Affiliation(s)
- Tim Hammersen
- Research Center for Experimental Orthopaedics, Department of Orthopaedics, Heidelberg University Hospital, 69118 Heidelberg, Germany
| | - Justyna Buchert
- Research Center for Experimental Orthopaedics, Department of Orthopaedics, Heidelberg University Hospital, 69118 Heidelberg, Germany
| | - Severin Zietzschmann
- Orthopaedic Hospital, Department of Orthopaedics, Heidelberg University Hospital, 69118 Heidelberg, Germany
| | - Solvig Diederichs
- Research Center for Experimental Orthopaedics, Department of Orthopaedics, Heidelberg University Hospital, 69118 Heidelberg, Germany
| | - Wiltrud Richter
- Research Center for Experimental Orthopaedics, Department of Orthopaedics, Heidelberg University Hospital, 69118 Heidelberg, Germany
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5
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Abedin Zadeh M, Alany RG, Satarian L, Shavandi A, Abdullah Almousa M, Brocchini S, Khoder M. Maillard Reaction Crosslinked Alginate-Albumin Scaffolds for Enhanced Fenofibrate Delivery to the Retina: A Promising Strategy to Treat RPE-Related Dysfunction. Pharmaceutics 2023; 15:pharmaceutics15051330. [PMID: 37242572 DOI: 10.3390/pharmaceutics15051330] [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: 03/06/2023] [Revised: 04/13/2023] [Accepted: 04/20/2023] [Indexed: 05/28/2023] Open
Abstract
There are limited treatments currently available for retinal diseases such as age-related macular degeneration (AMD). Cell-based therapy holds great promise in treating these degenerative diseases. Three-dimensional (3D) polymeric scaffolds have gained attention for tissue restoration by mimicking the native extracellular matrix (ECM). The scaffolds can deliver therapeutic agents to the retina, potentially overcoming current treatment limitations and minimizing secondary complications. In the present study, 3D scaffolds made up of alginate and bovine serum albumin (BSA) containing fenofibrate (FNB) were prepared by freeze-drying technique. The incorporation of BSA enhanced the scaffold porosity due to its foamability, and the Maillard reaction increased crosslinking degree between ALG with BSA resulting in a robust scaffold with thicker pore walls with a compression modulus of 13.08 KPa suitable for retinal regeneration. Compared with ALG and ALG-BSA physical mixture scaffolds, ALG-BSA conjugated scaffolds had higher FNB loading capacity, slower release of FNB in the simulated vitreous humour and less swelling in water and buffers, and better cell viability and distribution when tested with ARPE-19 cells. These results suggest that ALG-BSA MR conjugate scaffolds may be a promising option for implantable scaffolds for drug delivery and retinal disease treatment.
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Affiliation(s)
- Maria Abedin Zadeh
- Drug Discovery, Delivery and Patient Care (DDDPC) Theme, School of Life Sciences, Pharmacy and Chemistry, Kingston University London, Kingston Upon Thames KT1 2EE, UK
- UCL School of Pharmacy, University College London, London WC1N 1AX, UK
| | - Raid G Alany
- Drug Discovery, Delivery and Patient Care (DDDPC) Theme, School of Life Sciences, Pharmacy and Chemistry, Kingston University London, Kingston Upon Thames KT1 2EE, UK
- School of Pharmacy, The University of Auckland, Auckland 1010, New Zealand
| | - Leila Satarian
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran 1665659911, Iran
| | - Amin Shavandi
- 3BIO-BioMatter, École Polytechnique de Bruxelles, Université Libre de Bruxelles (ULB), Avenue F.D. Roosevelt, 50-CP 165/61, 1050 Brussels, Belgium
| | | | - Steve Brocchini
- UCL School of Pharmacy, University College London, London WC1N 1AX, UK
| | - Mouhamad Khoder
- Drug Discovery, Delivery and Patient Care (DDDPC) Theme, School of Life Sciences, Pharmacy and Chemistry, Kingston University London, Kingston Upon Thames KT1 2EE, UK
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6
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Lee JE, Heo SW, Kim CH, Park SJ, Park SH, Kim TH. In-situ ionic crosslinking of 3D bioprinted cell-hydrogel constructs for mechanical reinforcement and improved cell growth. BIOMATERIALS ADVANCES 2023; 147:213322. [PMID: 36758283 DOI: 10.1016/j.bioadv.2023.213322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 01/01/2023] [Accepted: 01/29/2023] [Indexed: 02/04/2023]
Abstract
Hydrogels are commonly used in 3D bioprinting technology owing to their ability to encapsulate living cells. However, their inherent delicate properties limit their applicability in the fabrication of mechanically reliable tissue engineering constructs. Herein, we propose a novel reinvented layering integration method for the functional enhancement of 3D cell-hydrogel bioprinting. This was implemented by inserting electrospun microfiber sheets with a crosslinker between the 3D bioprinted layers. When surface-modified microfiber sheets were combined with Ca2+ ionic crosslinkers, the as-printed cell-hydrogel strand was immediately crosslinked when it contacted the sheet surface. The in-situ crosslinking in the bioprinting process not only improved the overall structural stability, but also reinforced the compressive strength and elastic modulus. The enhanced structural stability guaranteed the shape fidelity of the 3D architecture, which included the internal channel network, resulting in improved perfusion conditions for cell growth. The growth of NIH3T3 fibroblasts in 3D bioconstructs with in-situ crosslinking increased by up to five times compared to that of normally bioprinted constructs. The strengthened structural integrity was distinctly sustainable during the cell culture period owing to the sustained release of Ca2+ ions from the embedded microfiber sheets. The synergistic effect of the reinforced mechanical properties with enhanced cell growth is expected to extend the applicability of the proposed hydrogel-based bioprinting technique for soft tissue engineering.
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Affiliation(s)
- Ji Eun Lee
- Advanced Textile R&D Department, Korea Institute of Industrial Technology, Ansan 15588, South Korea
| | - Seung Won Heo
- Advanced Textile R&D Department, Korea Institute of Industrial Technology, Ansan 15588, South Korea
| | - Chae Hwa Kim
- Advanced Textile R&D Department, Korea Institute of Industrial Technology, Ansan 15588, South Korea
| | - Seong Je Park
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang avenue, 639798, Singapore
| | - Suk-Hee Park
- School of Mechanical Engineering, Pusan National University, Busan 46241, South Korea.
| | - Tae Hee Kim
- Advanced Textile R&D Department, Korea Institute of Industrial Technology, Ansan 15588, South Korea.
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7
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Millesi F, Mero S, Semmler L, Rad A, Stadlmayr S, Borger A, Supper P, Haertinger M, Ploszczanski L, Windberger U, Weiss T, Naghilou A, Radtke C. Systematic Comparison of Commercial Hydrogels Revealed That a Synergy of Laminin and Strain-Stiffening Promotes Directed Migration of Neural Cells. ACS APPLIED MATERIALS & INTERFACES 2023; 15:12678-12695. [PMID: 36876876 PMCID: PMC10020957 DOI: 10.1021/acsami.2c20040] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 02/23/2023] [Indexed: 05/19/2023]
Abstract
Hydrogels have shown potential in replacing damaged nerve tissue, but the ideal hydrogel is yet to be found. In this study, various commercially available hydrogels were compared. Schwann cells, fibroblasts, and dorsal root ganglia neurons were seeded on the hydrogels, and their morphology, viability, proliferation, and migration were examined. Additionally, detailed analyses of the gels' rheological properties and topography were conducted. Our results demonstrate vast differences on cell elongation and directed migration on the hydrogels. Laminin was identified as the driver behind cell elongation and in combination with a porous, fibrous, and strain-stiffening matrix structure responsible for oriented cell motility. This study improves our understanding of cell-matrix interactions and thereby facilitates tailored fabrication of hydrogels in the future.
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Affiliation(s)
- Flavia Millesi
- Research
Laboratory of the Department of Plastic, Reconstructive and Aesthetic
Surgery, Medical University of Vienna, Vienna 1090, Austria
- Austrian
Cluster for Tissue Regeneration, Vienna 1200, Austria
| | - Sascha Mero
- Research
Laboratory of the Department of Plastic, Reconstructive and Aesthetic
Surgery, Medical University of Vienna, Vienna 1090, Austria
- Austrian
Cluster for Tissue Regeneration, Vienna 1200, Austria
| | - Lorenz Semmler
- Research
Laboratory of the Department of Plastic, Reconstructive and Aesthetic
Surgery, Medical University of Vienna, Vienna 1090, Austria
- Austrian
Cluster for Tissue Regeneration, Vienna 1200, Austria
| | - Anda Rad
- Research
Laboratory of the Department of Plastic, Reconstructive and Aesthetic
Surgery, Medical University of Vienna, Vienna 1090, Austria
- Austrian
Cluster for Tissue Regeneration, Vienna 1200, Austria
| | - Sarah Stadlmayr
- Research
Laboratory of the Department of Plastic, Reconstructive and Aesthetic
Surgery, Medical University of Vienna, Vienna 1090, Austria
- Austrian
Cluster for Tissue Regeneration, Vienna 1200, Austria
| | - Anton Borger
- Research
Laboratory of the Department of Plastic, Reconstructive and Aesthetic
Surgery, Medical University of Vienna, Vienna 1090, Austria
- Austrian
Cluster for Tissue Regeneration, Vienna 1200, Austria
| | - Paul Supper
- Research
Laboratory of the Department of Plastic, Reconstructive and Aesthetic
Surgery, Medical University of Vienna, Vienna 1090, Austria
- Austrian
Cluster for Tissue Regeneration, Vienna 1200, Austria
| | - Maximilian Haertinger
- Research
Laboratory of the Department of Plastic, Reconstructive and Aesthetic
Surgery, Medical University of Vienna, Vienna 1090, Austria
- Austrian
Cluster for Tissue Regeneration, Vienna 1200, Austria
| | - Leon Ploszczanski
- Institute
for Physics and Materials Science, University
of Natural Resources and Life Sciences, Vienna 1190, Austria
| | - Ursula Windberger
- Decentralized
Biomedical Facilities, Core Unit Laboratory Animal Breeding and Husbandry, Medical University Vienna, Vienna 1090, Austria
| | - Tamara Weiss
- Research
Laboratory of the Department of Plastic, Reconstructive and Aesthetic
Surgery, Medical University of Vienna, Vienna 1090, Austria
- Austrian
Cluster for Tissue Regeneration, Vienna 1200, Austria
| | - Aida Naghilou
- Research
Laboratory of the Department of Plastic, Reconstructive and Aesthetic
Surgery, Medical University of Vienna, Vienna 1090, Austria
- Austrian
Cluster for Tissue Regeneration, Vienna 1200, Austria
- Department
of Physical Chemistry, University of Vienna, Vienna 1090, Austria
| | - Christine Radtke
- Research
Laboratory of the Department of Plastic, Reconstructive and Aesthetic
Surgery, Medical University of Vienna, Vienna 1090, Austria
- Austrian
Cluster for Tissue Regeneration, Vienna 1200, Austria
- Department
of Plastic, Reconstructive
and Aesthetic Surgery, Medical University
of Vienna, Vienna 1090, Austria
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8
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Bedell ML, Wang Z, Hogan KJ, Torres AL, Pearce HA, Chim LK, Grande-Allen KJ, Mikos AG. The effect of multi-material architecture on the ex vivo osteochondral integration of bioprinted constructs. Acta Biomater 2023; 155:99-112. [PMID: 36384222 PMCID: PMC9805529 DOI: 10.1016/j.actbio.2022.11.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 11/06/2022] [Accepted: 11/08/2022] [Indexed: 11/14/2022]
Abstract
Extrusion bioprinted constructs for osteochondral tissue engineering were fabricated to study the effect of multi-material architecture on encapsulated human mesenchymal stem cells' tissue-specific matrix deposition and integration into an ex vivo porcine osteochondral explant model. Two extrusion fiber architecture groups with differing transition regions and degrees of bone- and cartilage-like bioink mixing were employed. The gradient fiber (G-Fib) architecture group showed an increase in chondral integration over time, 18.5 ± 0.7 kPa on Day 21 compared to 9.6 ± 1.6 kPa on Day 1 for the required peak push-out force, and the segmented fiber (S-Fib) architecture group did not, which corresponded to the increase in sulfated glycosaminoglycan deposition noted only in the G-Fib group and the staining for cellularity and tissue-specific matrix deposition at the fiber-defect boundary. Conversely, the S-Fib architecture was associated with significant mineralization over time, but the G-Fib architecture was not. Notably, both fiber groups also had similar chondral integration as a re-inserted osteochondral tissue control. While architecture did dictate differences in the cells' responses to their environment, architecture was not shown to distinguish a statistically significant difference in tissue integration via fiber push-out testing within a given time point or explant region. Use of this three-week osteochondral model demonstrates that these bioink formulations support the fabrication of cell-laden constructs that integrate into explanted tissue as capably as natural tissue and encapsulate osteochondral matrix-producing cells, and it also highlights the important role that spatial architecture plays in the engineering of multi-phasic tissue environments. STATEMENT OF SIGNIFICANCE: Here, an ex vivo model was used to interrogate fundamental questions about the effect of multi-material scaffold architectural choices on osteochondral tissue integration. Cell-encapsulating constructs resembling stratified osteochondral tissue were 3D printed with architecture consisting of either gradient transitions or segmented transitions between the bone-like and cartilage-like bioink regions. The printed constructs were assessed alongside re-inserted natural tissue plugs via mechanical tissue integration push-out testing, biochemical assays, and histology. Differences in osteochondral matrix deposition were observed based on architecture, and both printed groups demonstrated cartilage integration similar to the native tissue plug group. As 3D printing becomes commonplace within biomaterials and tissue engineering, this work illustrates critical 3D co-culture interactions and demonstrates the importance of considering architecture when interpreting the results of studies utilizing spatially complex, multi-material scaffolds.
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Affiliation(s)
| | - Ziwen Wang
- Department of Bioengineering, Rice University, Houston, TX, USA
| | - Katie J Hogan
- Department of Bioengineering, Rice University, Houston, TX, USA; Medical Scientist Training Program, Baylor College of Medicine, Houston, TX, USA
| | | | - Hannah A Pearce
- Department of Bioengineering, Rice University, Houston, TX, USA
| | - Letitia K Chim
- Department of Bioengineering, Rice University, Houston, TX, USA
| | | | - Antonios G Mikos
- Department of Bioengineering, Rice University, Houston, TX, USA; NIBIB/NIH Center for Engineering Complex Tissues, USA.
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9
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Lertwimol T, Sonthithai P, Hankamolsiri W, Kaewkong P, Uppanan P. Development of chondrocyte-laden alginate hydrogels with modulated microstructure and properties for cartilage regeneration. Biotechnol Prog 2022; 39:e3322. [PMID: 36564904 DOI: 10.1002/btpr.3322] [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: 08/01/2022] [Revised: 12/06/2022] [Accepted: 12/20/2022] [Indexed: 12/25/2022]
Abstract
Alginate hydrogel is an attractive biomaterial for cell microencapsulation. The microarchitecture of hydrogels can regulate cellular functions. This study aims to investigate the applicability of sodium citrate buffer (SCB) as a culture medium supplement for modulating the microstructure of alginate microbeads to provide a favorable microenvironment for chondrogenic induction. The chondrocyte-laden microbeads, with and without TGF-β3 incorporation, were produced through an encapsulator. The obtained small-sized microbeads (~300 μm) were exposed to a treatment medium containing SCB, composed of varied concentrations of sodium citrate (1.10-1.57 mM), sodium chloride (3.00-4.29 mM), and ethylenediaminetetraacetic acid (0.60-0.86 mM) to partially degrade their crosslinked structure for 3 days, followed by culture in a normal medium until day 21. Scanning electron microscope micrographs demonstrated a loose hydrogel network with an enhanced pore size in the SCB-treated microbeads. Increasing the concentration of SCB in the treatment medium reduced the calcium content of the microbeads via a Na+ /Ca2+ exchange process and improved the water absorption of the microbeads, resulting in a higher swelling ratio. All the tested SCB concentrations were non-cytotoxic. Increases in aggrecan and type II collagen gene expression and their corresponding extracellular matrix accumulation, glycosaminoglycans, and type II collagen were vividly detected in the TGF-β3-containing microbeads with increasing SCB concentrations in the treatment medium. Our findings highlighted that the combination of SCB treatment and TGF-β3 incorporation in the chondrocyte-laden microbeads is a promising strategy for enhancing cartilage regeneration, which may contribute to a versatile application in cell delivery and tissue engineering.
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Affiliation(s)
- Tareerat Lertwimol
- Biofunctional Materials and Devices Research Group, National Metal and Materials Technology Center, Pathum Thani, Thailand
| | - Pacharapan Sonthithai
- Biofunctional Materials and Devices Research Group, National Metal and Materials Technology Center, Pathum Thani, Thailand
| | - Weerawan Hankamolsiri
- Biofunctional Materials and Devices Research Group, National Metal and Materials Technology Center, Pathum Thani, Thailand
| | - Pakkanun Kaewkong
- Biofunctional Materials and Devices Research Group, National Metal and Materials Technology Center, Pathum Thani, Thailand
| | - Paweena Uppanan
- Biofunctional Materials and Devices Research Group, National Metal and Materials Technology Center, Pathum Thani, Thailand
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10
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Hamidi Nia L, Claesen J. Engineered Cancer Targeting Microbes and Encapsulation Devices for Human Gut Microbiome Applications. Biochemistry 2022; 61:2841-2848. [PMID: 35868631 PMCID: PMC9785036 DOI: 10.1021/acs.biochem.2c00251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 07/12/2022] [Indexed: 12/26/2022]
Abstract
The gut microbiota produce specialized metabolites that are important for maintaining host health homeostasis. Hence, unstable production of these metabolites can contribute to diseases such as inflammatory bowel disease and colon cancer. While fecal transplantation or dietary modification approaches can be used to correct the gut microbial community's metabolic output, this Perspective focuses on the use of engineered bacteria. We highlight recent advances in bacterial synthetic biology approaches for the treatment of colorectal cancer and systemic tumors and discuss the functionality and biochemical properties of novel containment approaches using hydrogel-based and electronic devices. Synthetic circuitry refinement and incorporation of novel functional modules have enabled more targeted detection of colonic tumors and delivery of anticancer compounds inside the gastrointestinal (GI) tract, as well as the design of tumor-homing bacteria capable of recruiting infiltrating T cells. Engineering challenges in these applications include the stability of the genetic circuits, long-term engraftment of the chosen chassis, and containment of the synthetic microbes' activity to the diseased tissues. Hydrogels are well-suited to the encapsulationo of living organisms due to their matrix structure and tunable porosity. The matrix structure allows a dried hydrogel to collect and contain GI contents. Engineered bacteria that sense GI tract inflammation or tumors and release bioactive metabolites to the targeted area can be encapsulated. Electronic devices can be enabled with additional measuring and data processing capabilities. We expect that engineered devices will become more important in the containment and delivery of synthetic microbes for diagnostic and therapeutic applications.
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Affiliation(s)
- Layan Hamidi Nia
- Department
of Cardiovascular and Metabolic Sciences, Lerner Research Institute of the Cleveland Clinic, Cleveland, Ohio 44195, United States
- Department
of Biomedical Engineering, Cleveland State
University, Cleveland, Ohio 44115, United
States
| | - Jan Claesen
- Department
of Cardiovascular and Metabolic Sciences, Lerner Research Institute of the Cleveland Clinic, Cleveland, Ohio 44195, United States
- Center
for Microbiome and Human Health, Lerner
Research Institute of the Cleveland Clinic, Cleveland, Ohio 44195, United States
- Department
of Molecular Medicine, Cleveland Clinic
Lerner College of Medicine of Case Western Reserve University, Cleveland, Ohio 44195, United States
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11
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Rahim MA, Shoukat A, Khalid W, Ejaz A, Itrat N, Majeed I, Koraqi H, Imran M, Nisa MU, Nazir A, Alansari WS, Eskandrani AA, Shamlan G, AL-Farga A. A Narrative Review on Various Oil Extraction Methods, Encapsulation Processes, Fatty Acid Profiles, Oxidative Stability, and Medicinal Properties of Black Seed ( Nigella sativa). Foods 2022; 11:2826. [PMID: 36140949 PMCID: PMC9498113 DOI: 10.3390/foods11182826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Revised: 09/02/2022] [Accepted: 09/02/2022] [Indexed: 11/16/2022] Open
Abstract
The current review investigates the effects of black seed (Nigella sativa) on human health, which is also used to encapsulate and oxidative stable in different food products. In recent decades, many extraction methods, such as cold pressing, supercritical fluid extraction, Soxhlet extraction, hydro distillation (HD) method, microwave-assisted extraction (MAE), ultrasound-assisted extraction, steam distillation, and accelerated solvent extraction (ASE) have been used to extract the oils from black seeds under optimal conditions. Black seed oil contains essential fatty acids, in which the major fatty acids are linoleic, oleic, and palmitic acids. The oxidative stability of black seed oil is very low, due to various environmental conditions or factors (temperature and light) affecting the stability. The oxidative stability of black seed oil has been increased by using encapsulation methods, including nanoprecipitation, ultra-sonication, spray-drying, nanoprecipitation, electrohydrodynamic, atomization, freeze-drying, a electrospray technique, and coaxial electrospraying. Black seed, oil, microcapsules, and their components have been used in various food processing, pharmaceutical, nutraceutical, and cosmetics industries as functional ingredients for multiple purposes. Black seed and oil contain thymoquinone as a major component, which has anti-oxidant, -diabetic, -inflammatory, -cancer, -viral, and -microbial properties, due to its phenolic compounds. Many clinical and experimental studies have indicated that the black seed and their by-products can be used to reduce the risk of cardiovascular diseases, chronic cancer, diabetes, oxidative stress, polycystic ovary syndrome, metabolic disorders, hypertension, asthma, and skin disorders. In this review, we are focusing on black seed oil composition and increasing the stability using different encapsulation methods. It is used in various food products to increase the human nutrition and health properties.
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Affiliation(s)
- Muhammad Abdul Rahim
- Department of Food Science, Faculty of Life Sciences, Government College University, Faisalabad 38000, Pakistan
| | - Aurbab Shoukat
- National Institute of Food Science & Technology, University of Agriculture, Faisalabad 38000, Pakistan
| | - Waseem Khalid
- Department of Food Science, Faculty of Life Sciences, Government College University, Faisalabad 38000, Pakistan
| | - Afaf Ejaz
- Department of Food Science, Faculty of Life Sciences, Government College University, Faisalabad 38000, Pakistan
| | - Nizwa Itrat
- Department of Nutritional Sciences, Faculty of Medical Sciences, Government College University, Faisalabad 38000, Pakistan
| | - Iqra Majeed
- Department of Nutritional Sciences, Faculty of Medical Sciences, Government College University, Faisalabad 38000, Pakistan
| | - Hyrije Koraqi
- Faculty of Food Science and Biotechnology, UBT-Higher Education Institution, Rexhep Krasniqi No. 56, 10000 Pristina, Kosovo
| | - Muhammad Imran
- Department of Food Science, Faculty of Life Sciences, Government College University, Faisalabad 38000, Pakistan
| | - Mahr Un Nisa
- Department of Nutritional Sciences, Faculty of Medical Sciences, Government College University, Faisalabad 38000, Pakistan
| | - Anum Nazir
- Department of Nutritional Sciences, Faculty of Medical Sciences, Government College University, Faisalabad 38000, Pakistan
| | - Wafa S. Alansari
- Biochemistry Department, Faculty of Science, University of Jeddah, Jeddah 21577, Saudi Arabia
| | - Areej A. Eskandrani
- Chemistry Department, Faculty of Science, Taibah University, Medina 30002, Saudi Arabia
| | - Ghalia Shamlan
- Department of Food Science and Nutrition, College of Food and Agriculture Sciences, King Saud University, Riyadh 11362, Saudi Arabia
| | - Ammar AL-Farga
- Biochemistry Department, Faculty of Science, University of Jeddah, Jeddah 21577, Saudi Arabia
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12
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Volatile Organic Compounds from Basil Essential Oils: Plant Taxonomy, Biological Activities, and Their Applications in Tropical Fruit Productions. HORTICULTURAE 2022. [DOI: 10.3390/horticulturae8020144] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Basils of the genus Ocimum are aromatic plants grown widely throughout the tropical and temperate regions. The essential oils obtained from their aerial parts are enriched with volatile organic compounds with high market demand for food and pharmaceutical industries. The volatile organic compounds have been shown to exhibit biological activities. Therefore, their novel applications have been extensively explored in the last few decades. The most widely available basils in the tropical areas include white holy basil (O. sanctum var. Shyama), red holy basil (O. sanctum var. Rama), Thai basil (O. basilicum var. thyrsiflorum), lemon basil (O. citriodorum), and tree basil (O. gratissimum). Over 60 volatiles of different classes have been exclusively described, and some of them could be useful as biomarkers for genotype specification. The major volatile ingredient is the phenylpropanoids, such as methyl eugenol, which has the potential as a natural product for mitigating Oriental fruit fly (Bactrocera dorsalis) during tropical fruit production. Moreover, basil essential oils are also used to control diseases of the fruits during post-harvest storage. As a result, the application of basil essential oils as a sustainable defect control strategy for tropical fruit value chains seems intriguing. This review provides comprehensive information on plant taxonomy and volatile compositions of the essential oil fractions from different basil species. Their biological activities and applications are also discussed, mainly during the pre- and post-production of tropical fruits. Additionally, the available techniques to enhance the efficacy of the volatile active compounds are also described.
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13
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Qin X, Wu Y, Liu S, Yang L, Yuan H, Cai S, Flesch J, Li Z, Tang Y, Li X, Zhuang Y, You C, Liu C, Yu C. Surface Modification of Polycaprolactone Scaffold With Improved Biocompatibility and Controlled Growth Factor Release for Enhanced Stem Cell Differentiation. Front Bioeng Biotechnol 2022; 9:802311. [PMID: 35071210 PMCID: PMC8782149 DOI: 10.3389/fbioe.2021.802311] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Accepted: 11/15/2021] [Indexed: 01/31/2023] Open
Abstract
Polycaprolactone (PCL) has been widely used as a scaffold material for tissue engineering. Reliable applications of the PCL scaffolds require overcoming their native hydrophobicity and obtaining the sustained release of signaling factors to modulate cell growth and differentiation. Here, we report a surface modification strategy for electrospun PCL nanofibers using an azide-terminated amphiphilic graft polymer. With multiple alkylation and pegylation on the side chains of poly-L-lysine, stable coating of the graft polymer on the PCL nanofibers was achieved in one step. Using the azide-alkyne “click chemistry”, we functionalized the azide-pegylated PCL nanofibers with dibenzocyclooctyne-modified nanocapsules containing growth factor, which rendered the nanofiber scaffold with satisfied cell adhesion and growth property. Moreover, by specific immobilization of pH-responsive nanocapsules containing bone morphogenetic protein 2 (BMP-2), controlled release of active BMP-2 from the PCL nanofibers was achieved within 21 days. When bone mesenchyme stem cells were cultured on this nanofiber scaffold, enhanced ossification was observed in correlation with the time-dependent release of BMP-2. The established surface modification can be extended as a generic approach to hydrophobic nanomaterials for longtime sustainable release of multiplex signaling proteins for tissue engineering.
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Affiliation(s)
- Xiaoyan Qin
- College of Life Sciences and Technology, Beijing University of Chemical Technology, Beijing, China
| | - Yixin Wu
- College of Life Sciences and Technology, Beijing University of Chemical Technology, Beijing, China
| | - Shuang Liu
- College of Life Sciences and Technology, Beijing University of Chemical Technology, Beijing, China
| | - Lei Yang
- Department of Spine Surgery, The First Affiliated Hospital, Shenzhen University, Shenzhen Second People's Hospital, Shenzhen, China
| | - Hongxia Yuan
- College of Life Sciences and Technology, Beijing University of Chemical Technology, Beijing, China
| | - Susu Cai
- College of Life Sciences and Technology, Beijing University of Chemical Technology, Beijing, China
| | - Julia Flesch
- Department of Biology/Chemistry, University of Osnabrück, Osnabrück, Germany.,Center of Cellular Nanoanalytics (CellNanOs), Osnabrück, Germany
| | - Zehao Li
- College of Life Sciences and Technology, Beijing University of Chemical Technology, Beijing, China
| | - Yujing Tang
- SINOPEC, Beijing Research Institute of Chemical Industry, Beijing, China
| | - Xiaomin Li
- SINOPEC, Beijing Research Institute of Chemical Industry, Beijing, China
| | - Yi Zhuang
- Science and Technology Department China Petrochemical Corporation, Beijing, China
| | - Changjiang You
- Department of Biology/Chemistry, University of Osnabrück, Osnabrück, Germany.,Center of Cellular Nanoanalytics (CellNanOs), Osnabrück, Germany
| | - Chaoyong Liu
- College of Life Sciences and Technology, Beijing University of Chemical Technology, Beijing, China
| | - Changyuan Yu
- College of Life Sciences and Technology, Beijing University of Chemical Technology, Beijing, China
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14
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Application of Alginate Hydrogels for Next-Generation Articular Cartilage Regeneration. Int J Mol Sci 2022; 23:ijms23031147. [PMID: 35163071 PMCID: PMC8835677 DOI: 10.3390/ijms23031147] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 01/14/2022] [Accepted: 01/18/2022] [Indexed: 12/28/2022] Open
Abstract
The articular cartilage has insufficient intrinsic healing abilities, and articular cartilage injuries often progress to osteoarthritis. Alginate-based scaffolds are attractive biomaterials for cartilage repair and regeneration, allowing for the delivery of cells and therapeutic drugs and gene sequences. In light of the heterogeneity of findings reporting the benefits of using alginate for cartilage regeneration, a better understanding of alginate-based systems is needed in order to improve the approaches aiming to enhance cartilage regeneration with this compound. This review provides an in-depth evaluation of the literature, focusing on the manipulation of alginate as a tool to support the processes involved in cartilage healing in order to demonstrate how such a material, used as a direct compound or combined with cell and gene therapy and with scaffold-guided gene transfer procedures, may assist cartilage regeneration in an optimal manner for future applications in patients.
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15
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Douglas L, Rivera-Gonzalez N, Cool N, Bajpayee A, Udayakantha M, Liu GW, Anita, Banerjee S. A Materials Science Perspective of Midstream Challenges in the Utilization of Heavy Crude Oil. ACS OMEGA 2022; 7:1547-1574. [PMID: 35071852 PMCID: PMC8772305 DOI: 10.1021/acsomega.1c06399] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Accepted: 12/24/2021] [Indexed: 12/30/2023]
Abstract
An increasing global population and a sharply upward trajectory of per capita energy consumption continue to drive the demand for fossil fuels, which remain integral to energy grids and the global transportation infrastructure. The oil and gas industry is increasingly reliant on unconventional deposits such as heavy crude oil and bitumen for reasons of accessibility, scale, and geopolitics. Unconventional deposits such as the Canadian Oil Sands in Northern Alberta contain more than one-third of the world's viscous oil reserves and are vital linchpins to meet the energy needs of rapidly industrializing populations. Heavy oil is typically recovered from subsurface deposits using thermal recovery approaches such as steam-assisted gravity drainage (SAGD). In this perspective article, we discuss several aspects of materials science challenges in the utilization of heavy crude oil with an emphasis on the needs of the Canadian Oil Sands. In particular, we discuss surface modification and materials' design approaches essential to operations under extreme environments of high temperatures and pressures and the presence of corrosive species. The demanding conditions for materials and surfaces are directly traceable to the high viscosity, low surface tension, and substantial sulfur content of heavy crude oil, which necessitates extensive energy-intensive thermal processes, warrants dilution/emulsification to ease the flow of rheologically challenging fluids, and engenders the need to protect corrodible components. Geopolitical reasons have further led to a considerable geographic separation between extraction sites and advanced refineries capable of processing heavy oils to a diverse slate of products, thus necessitating a massive midstream infrastructure for transportation of these rheologically challenging fluids. Innovations in fluid handling, bitumen processing, and midstream transportation are critical to the economic viability of heavy oil. Here, we discuss foundational principles, recent technological advancements, and unmet needs emphasizing candidate solutions for thermal insulation, membrane-assisted separations, corrosion protection, and midstream bitumen transportation. This perspective seeks to highlight illustrative materials' technology developments spanning the range from nanocomposite coatings and cement sheaths for thermal insulation to the utilization of orthogonal wettability to engender separation of water-oil emulsions stabilized by endogenous surfactants extracted during SAGD, size-exclusion membranes for fractionation of bitumen, omniphobic coatings for drag reduction in pipelines and to ease oil handling in containers, solid prills obtained from partial bitumen solidification to enable solid-state transport with reduced risk of damage from spills, and nanocomposite coatings incorporating multiple modes of corrosion inhibition. Future outlooks for onsite partial upgradation are also described, which could potentially bypass the use of refineries for some fractions, enable access to a broader cross-section of refineries, and enable a new distributed chemical manufacturing paradigm.
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Affiliation(s)
- Lacey
D. Douglas
- Department
of Chemistry, Texas A&M University, College Station, Texas 77842-3012, United States
- Department
of Materials Science and Engineering, Texas
A&M University, College Station, Texas 77843-3003, United States
| | - Natalia Rivera-Gonzalez
- Department
of Chemistry, Texas A&M University, College Station, Texas 77842-3012, United States
- Department
of Materials Science and Engineering, Texas
A&M University, College Station, Texas 77843-3003, United States
| | - Nicholas Cool
- Department
of Chemistry, Texas A&M University, College Station, Texas 77842-3012, United States
- Department
of Materials Science and Engineering, Texas
A&M University, College Station, Texas 77843-3003, United States
| | - Aayushi Bajpayee
- Department
of Chemistry, Texas A&M University, College Station, Texas 77842-3012, United States
- Department
of Materials Science and Engineering, Texas
A&M University, College Station, Texas 77843-3003, United States
| | - Malsha Udayakantha
- Department
of Chemistry, Texas A&M University, College Station, Texas 77842-3012, United States
- Department
of Materials Science and Engineering, Texas
A&M University, College Station, Texas 77843-3003, United States
| | - Guan-Wen Liu
- Department
of Chemistry, Texas A&M University, College Station, Texas 77842-3012, United States
- Department
of Materials Science and Engineering, Texas
A&M University, College Station, Texas 77843-3003, United States
| | - Anita
- Department
of Chemistry, Texas A&M University, College Station, Texas 77842-3012, United States
- Department
of Materials Science and Engineering, Texas
A&M University, College Station, Texas 77843-3003, United States
| | - Sarbajit Banerjee
- Department
of Chemistry, Texas A&M University, College Station, Texas 77842-3012, United States
- Department
of Materials Science and Engineering, Texas
A&M University, College Station, Texas 77843-3003, United States
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16
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Preparation and Characterisation of Cellulose Nanocrystal/Alginate/Polyethylene Glycol Diacrylate (CNC/Alg/PEGDA) Hydrogel Using Double Network Crosslinking Technique for Bioprinting Application. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12020771] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
In this study, we aimed to prepare and characterise hydrogel formulations using cellulose nanocrystals (CNCs), alginate (Alg), and polyethylene glycol diacrylate (PEGDA). The CNC/Alg/PEGDA formulations were formed using a double network crosslinking approach. Firstly, CNC was extracted from oil palm trunk, and the size and morphology of the CNCs were characterised using TEM analysis. Secondly, different formulations were prepared using CNCs, Alg, and PEGDA. The mixtures were crosslinked with Ca2+ ions and manually extruded using a syringe before being subjected to UV irradiation at 365 nm. The shear-thinning properties of the formulations were tested prior to any crosslinking, while the determination of storage and loss modulus was conducted post extrusion after the Ca2+ ion crosslink using a rheometer. For the analysis of swelling behaviour, the constructs treated with UV were immersed in PBS solution (pH 7.4) for 48 h. The morphology of the UV crosslinked construct was analysed using SEM imaging. The extracted CNC exhibited rod-like structures with an average diameter and length of around 7 ± 2.4 and 113 ± 20.7 nm, respectively. Almost all CNC/Alg/PEGDA formulations (pre-gel formulation) displayed shear-thinning behaviour with the power-law index η < 1, and the behaviour was more prominent in the 1% [w/v] Alg formulations. The CNC/Alg/PEGDA with 2.5% and 4% [w/v] Alg displayed a storage modulus dominance over loss modulus (G′ > G″) which suggests good shape fidelity. After the hydrogel constructs were subjected to UV treatment at 365 nm, only the F8 construct [4% CNC: 4% Alg: 40% PEGDA] demonstrated tough and flexible characteristics that possibly mimic the native articular cartilage property due to a similar water content percentage (79.5%). In addition, the small swelling ratio of 4.877 might contribute to a minimal change of the 3D construct’s geometry. The hydrogel revealed a rough and wavy surface, and the pore size ranged from 3 to 20 µm. Overall, the presence of CNCs in the double network hydrogel demonstrated importance and showed positive effects towards the fabrication of a potentially ideal 3D bioprinted scaffold.
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17
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Jeon O, Kim TH, Alsberg E. Reversible dynamic mechanics of hydrogels for regulation of cellular behavior. Acta Biomater 2021; 136:88-98. [PMID: 34563721 DOI: 10.1016/j.actbio.2021.09.032] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 09/15/2021] [Accepted: 09/16/2021] [Indexed: 01/06/2023]
Abstract
The mechanical properties of the native extracellular matrix play a key role in regulating cell behavior during developmental, healing and homeostatic processes. Since these properties change over time, it may be valuable to have the capacity to dynamically vary the mechanical properties of engineered hydrogels used in tissue engineering strategies to better mimic the dynamic mechanical behavior of native extracellular matrix. However, in situ repeatedly reversible dynamic tuning of hydrogel mechanics is still limited. In this study, we have engineered a hydrogel system with reversible dynamic mechanics using a dual-crosslinkable alginate hydrogel. The effect of reversible mechanical signals on encapsulated stem cells in dynamically tunable hydrogels has been demonstrated. In situ stiffening of hydrogels decreases cell spreading and proliferation, and subsequent softening of hydrogels gives way to an increase in cell spreading and proliferation. The hydrogel stiffening and softening, and resulting cellular responses are repeatedly reversible. This hydrogel system provides a promising platform for investigating the effect of repeatedly reversible changes in extracellular matrix mechanics on cell behaviors. STATEMENT OF SIGNIFICANCE: Since the mechanical properties of native extracellular matrix (ECM) change over time during development, healing and homeostatic processes, it may be valuable to have the capacity to dynamically control the mechanics of biomaterials used in tissue engineering and regenerative medicine applications to better mimic this behavior. Unlike previously reported biomaterials whose mechanical properties can be changed by the user only a limited number of times, this system provides the capacity to induce unlimited alterations to the mechanical properties of an engineered ECM for 3D cell culture. This study presents a strategy for on-demand dynamic and reversible control of materials' mechanics by single and dual-crosslinking mechanisms using oxidized and methacrylated alginates. By demonstrating direct changes in encapsulated human mesenchymal stem cell morphology, proliferation and chondrogenic differentiation in response to multiple different dynamic changes in hydrogel mechanics, we have established a repeatedly reversible 3D cellular mechanosensing system. This system provides a powerful platform tool with a wide range of stiffness tunability to investigate the role of dynamic mechanics on cellular mechanosensing and behavioral responses.
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18
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Xue K, Jiang Y, Zhang X, Wu J, Qi L, Liu K. Hypoxic ADSCs-derived EVs promote the proliferation and chondrogenic differentiation of cartilage stem/progenitor cells. Adipocyte 2021; 10:322-337. [PMID: 34224296 PMCID: PMC8259721 DOI: 10.1080/21623945.2021.1945210] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 06/14/2021] [Accepted: 06/15/2021] [Indexed: 12/19/2022] Open
Abstract
Cartilage tissue engineering is a promising option for repairing cartilage defects, although harvesting a large number of seeding cells remains a major challenge. Cartilage stem/progenitor cells (CSPCs) seem to be a promising cell source. Hypoxic extracellular vesicles (EVs) may play a major role in cell-cell and tissue-tissue communication. In the current study, we aimed to evaluate the effect of hypoxic adipose-derived stem cells (ADSCs)-derived EVs on CSPCs proliferation and differentiation. The characteristics of ADSCs-derived EVs were identified, and proliferation, migration, and cartilage-related gene expression of CSPCs were measured with or without the presence of hypoxic ADSCs-derived EVs. SEM, histological staining, biochemical and biomechanical analysis was performed to evaluate the effect of hypoxic ADSCs-derived EVs on CSPCs in alginate hydrogel culture. The results indicated that the majority of ADSC-derived EVs exhibited a round-shaped or cup-shaped morphology with a diameter of 40-1000 nm and expressed CD9, CD63, and CD81. CSPCs migration and proliferation were enhanced by hypoxic ADSCs-derived EVs, which also increased the expression of cartilage-related genes. The hypoxic ADSCs-derived EVs induce CSPCs to produce significantly more cartilage matrix and proteoglycan. In conclusion, hypoxic ADSCs-derived EVs improved the proliferation and chondrogenic differentiation of CSPCs for cartilage tissue engineering.
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Affiliation(s)
- Ke Xue
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Tissue Engineering, Shanghai, PR China
| | - Yongkang Jiang
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Tissue Engineering, Shanghai, PR China
| | - Xiaodie Zhang
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Tissue Engineering, Shanghai, PR China
| | - Jun Wu
- Department of Orthopedics, The First People’s Hospital of Changzhou, Jiangsu Changzhou, China
| | - Lin Qi
- Department of Radiology, Huadong Hospital, Fudan University, Shanghai, China
| | - Kai Liu
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Tissue Engineering, Shanghai, PR China
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19
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Bonini S, Labetoulle M, Messmer E, Aragona P, Benitez Castillo JM, Ciprandi G, Damiani V, Irkec M, Baudouin C, Rolando M. Association of Dry Eye with Laryngopharyngeal Reflux in Clinical Practice. Curr Eye Res 2021; 47:214-219. [PMID: 34437824 DOI: 10.1080/02713683.2021.1971721] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
BACKGROUND Dry eye disease (DED) is a common disorder, accounting for up to 35% of the general population. Therefore, we hypothesized that laryngopharyngeal reflux (LPR), inducing refluxate rising into airways, may involve the ocular surface and may either induce or worsen DED. AIM To investigate the prevalence and relevance of suspected LPR in DED patients and subjects with refractive problems (RP) without DED, they were defined as non-dry eye group (NEG) in clinical practice. METHODS This retrospective study included consecutive patients evaluated because of dry eye-like symptoms at eight tertiary ophthalmological clinics. Parameters included reflux symptom index (RSI), ocular surface disease index (OSDI), symptom assessment in dry eye (SANDE) for frequency and severity, Schirmer test, tear break-up time (BUT), and Oxford grading. RESULTS The study included 245 subjects (72.5% females; mean age 56.3 years), 152 DED patients, and 93 sex- and age-matched NEG subjects. Pathological RSI (score>13) was detected in 80 subjects (32.6%); 68 (85%) with DED and 12 (15%) CG (OR = 8; p < .0001). In NEG, pathological RSI was associated with higher SANDE (Frequency and Severity), OSDI, and Schirmer scores (OR = 16.36; 14.51; 12.54; and 7.22, respectively. In DED patients, pathological RSI was associated with higher OSDI values (OR = 8.75). CONCLUSION Patients with DED are at eight times higher risk for having pathological RSI than NEG patients. Moreover, pathological RSI was associated with more severe ocular symptoms both in DED and non-DED patients. The role of LPR in definite DED patients remains to be clarified, but this condition deserves to be investigated in managing patients with DED symptoms.
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Affiliation(s)
- S Bonini
- Ophthalmology Department, Campus Bio-Medico University, Rome, Italy
| | - M Labetoulle
- Ophthalmology Départment, Hôpitaux Universitaires Paris-Sud, APHP, Université Paris-Saclay, IDMIT Infrastructure, CEA, Inserm U1184, Fontenay-aux-Roses Cedex, France
| | - E Messmer
- Department of Ophthalmology, Ludwig-Maximilians-University, Munich, Germany
| | - P Aragona
- Department of Biomedical Sciences, Ophthalmology Clinic, University of Messina, Messina, Italy
| | - J M Benitez Castillo
- Departamento de Oftalmología, Hospital Clínico San Carlos, Clínica Rementeria, Instituto Investigaciones Oftalmologicas Ramon Castroviejo, Universidad Complutense, Madrid, Spain
| | - G Ciprandi
- Allergy Clinic, Casa di Cura Villa Montallegro, Genoa, Italy
| | - V Damiani
- DMG Italia Medical Department, Rome, Italy
| | - M Irkec
- Department of Ophthalmology, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - C Baudouin
- Quinze-Vingts National Eye Hospital, IHU ForeSight, Paris Saclay University, Paris, France
| | - M Rolando
- Ocular Surface Centre, ISPRE Ophthalmics, Genoa, Italy
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20
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Hirose R, Nakaya T, Naito Y, Yoshida T, Bandou R, Daidoji T, Inoue K, Dohi O, Yoshida N, Itoh Y. An innovative next-generation endoscopic submucosal injection material with a 2-step injection system (with video). Gastrointest Endosc 2021; 93:503-513.e5. [PMID: 32565186 DOI: 10.1016/j.gie.2020.06.031] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Accepted: 06/05/2020] [Indexed: 02/06/2023]
Abstract
BACKGROUND AND AIMS Next-generation submucosal injection materials (SIMs) with higher performance and flexibility than the current SIMs (eg, 0.4% sodium hyaluronate solution [HA]) are expected to improve the outcomes of endoscopic submucosal dissection (ESD) but are difficult to develop. We developed a next-generation SIM by devising a 2-solution-type SIM comprising 2.0% calcium chloride solution (Ca) and 0.4% sodium alginate solution (SA) and evaluated its performance. METHODS Viscoelasticity, submucosal elevation height, and injection pressure of HA, SA, and the next-generation SIM were measured. Outcomes of ESDs on pseudo-lesions in ex vivo porcine stomach/colon models were compared. RESULTS The dramatic increase in SA viscoelasticity with the addition of Ca facilitated the formation of highly viscous submucosal cushions that can be controlled by endoscopists. The submucosal elevation height of the next-generation SIM was significantly higher than that of HA or SA with the same injection pressure. The ESD procedure time using the next-generation SIM was significantly shorter than that using HA or SA (14.2 ± 6.1 vs 29.2 ± 9.1 minutes, P = .0004, or 14.2 ± 6.1 vs 29.1 ± 5.9 minutes, P <.0001). Furthermore, the total injection volume for the next-generation SIM was considerably lower than that for HA or SA (7.0 ± 0.9 vs 17.2 ± 3.4 mL, P <.0001, or 7.0 ± 0.9 vs 16.2 ± 2.9 mL, P <.0001). CONCLUSIONS We developed an ideal next-generation SIM that achieved high performance and high flexibility in ex vivo models. Our findings warrant further investigations in a patient population.
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Affiliation(s)
- Ryohei Hirose
- Department of Molecular Gastroenterology and Hepatology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan; Department of Infectious Diseases, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Takaaki Nakaya
- Department of Infectious Diseases, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Yuji Naito
- Department of Molecular Gastroenterology and Hepatology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Takuma Yoshida
- Department of Molecular Gastroenterology and Hepatology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Risa Bandou
- Department of Infectious Diseases, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Tomo Daidoji
- Department of Infectious Diseases, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Ken Inoue
- Department of Molecular Gastroenterology and Hepatology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Osamu Dohi
- Department of Molecular Gastroenterology and Hepatology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Naohisa Yoshida
- Department of Molecular Gastroenterology and Hepatology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Yoshito Itoh
- Department of Molecular Gastroenterology and Hepatology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
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Benavides S, Mariotti-Celis MS, Paredes MJC, Parada JA, Franco WV. Thyme essential oil loaded microspheres for fish fungal infection: microstructure, in vitro dynamic release and antifungal activity. J Microencapsul 2020; 38:11-21. [PMID: 33048606 DOI: 10.1080/02652048.2020.1836055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
AIMS Evaluate the effect of varying the droplet size of microspheres charged with thyme essential oil (TEO-MS) on their swelling (Sw), release rate (%RR) and in vitro antifungal activity against Saprolegnia sp. METHODS TEO-MS obtained by ionic gelation were characterised through SEM microscopy and X-ray microtomography. Their Sw and RR% were evaluated at simulated fish-gastrointestinal conditions using gravimetric and spectrophotometric techniques. RESULTS For all evaluated droplet sizes (p ≥ 0.05), TEO was heterogeneously distributed inside of the MS and TEO-MS experimented agglomeration and sphericity loss after the drying process. Under gastric conditions, the acid pH (2.9) limited the Sw (50-100%) of TEO-MS, generating a low RR% (14-18%). Contrary, the slightly alkaline intestinal pH (8.1) favoured the Sw (∼3.2 to 3.8 times) and therefore the RR% (42-63%). CONCLUSIONS TEO-MS (5-100 mg/mL) presented antifungal capacity onto Saprolegnia sp. after the simulated fish digestion, being the small droplet size once the most effective.
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Affiliation(s)
- Sergio Benavides
- Núcleo de Investigación en Agroalimentos y Nutrición Aplicada, Universidad Adventista de Chile, Chillan, Chile.,Ingeniería Química y Bioprocesos, Pontificia Universidad Catolica de Chile, Santiago, Chile
| | - María Salomé Mariotti-Celis
- Escuela de Nutrición y Dietética, Facultad de Medicina, Universidad Finis Terrae, Santiago, Chile.,Programa Institucional de Fomento a la I + D+i (PIDi), Universidad Tecnológica Metropolitana, Santiago, Chile
| | - Maria Jose Carolina Paredes
- Núcleo de Investigación en Agroalimentos y Nutrición Aplicada, Universidad Adventista de Chile, Chillan, Chile
| | - Javier A Parada
- Instituto de Ciencia y Tecnología de los Alimentos, Universidad Austral de Chile, Valdivia, Chile
| | - Wendy V Franco
- Ingeniería Química y Bioprocesos, Pontificia Universidad Catolica de Chile, Santiago, Chile.,UDA Ciencias de la Salud, Pontificia Universidad Catolica de Chile, Santiago, Chile
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22
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Chu HY, Chen YJ, Hsu CJ, Liu YW, Chiou JF, Lu LS, Tseng FG. Physical Cues in the Microenvironment Regulate Stemness-Dependent Homing of Breast Cancer Cells. Cancers (Basel) 2020; 12:E2176. [PMID: 32764400 PMCID: PMC7464848 DOI: 10.3390/cancers12082176] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 08/03/2020] [Accepted: 08/04/2020] [Indexed: 12/24/2022] Open
Abstract
Tissue-specific microenvironmental factors contribute to the targeting preferences of metastatic cancers. However, the physical attributes of the premetastatic microenvironment are not yet fully characterized. In this research, we develop a transwell-based alginate hydrogel (TAH) model to study how permeability, stiffness, and roughness of a hanging alginate hydrogel regulate breast cancer cell homing. In this model, a layer of physically characterized alginate hydrogel is formed at the bottom of a transwell insert, which is placed into a matching culture well with an adherent monolayer of breast cancer cells. We found that breast cancer cells dissociate from the monolayer and home to the TAH for continual growth. The process is facilitated by the presence of rich serum in the upper chamber, the increased stiffness of the gel, as well as its surface roughness. This model is able to support the homing ability of MCF-7 and MDA-MB-231 cells drifting across the vertical distance in the culture medium. Cells homing to the TAH display stemness phenotype morphologically and biochemically. Taken together, these findings suggest that permeability, stiffness, and roughness are important physical factors to regulate breast cancer homing to a premetastatic microenvironment.
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Affiliation(s)
- Hsueh-Yao Chu
- Department of Engineering and System Science, National Tsing Hua University, Hsinchu 30013, Taiwan; (H.-Y.C.); (C.-J.H.); (Y.-W.L.)
| | - Yin-Ju Chen
- Department of Radiation Oncology, Taipei Medical University Hospital, Taipei 11031, Taiwan; (Y.-J.C.); (J.-F.C.)
- Graduate Institute of Biomedical Materials and Tissue Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei 11031, Taiwan
- International Ph.D. Program in Biomedical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei 11031, Taiwan
| | - Chun-Jieh Hsu
- Department of Engineering and System Science, National Tsing Hua University, Hsinchu 30013, Taiwan; (H.-Y.C.); (C.-J.H.); (Y.-W.L.)
| | - Yang-Wei Liu
- Department of Engineering and System Science, National Tsing Hua University, Hsinchu 30013, Taiwan; (H.-Y.C.); (C.-J.H.); (Y.-W.L.)
| | - Jeng-Fong Chiou
- Department of Radiation Oncology, Taipei Medical University Hospital, Taipei 11031, Taiwan; (Y.-J.C.); (J.-F.C.)
- Department of Radiology, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan
- Taipei Cancer Center, Taipei Medical University, Taipei 11031, Taiwan
| | - Long-Sheng Lu
- Department of Radiation Oncology, Taipei Medical University Hospital, Taipei 11031, Taiwan; (Y.-J.C.); (J.-F.C.)
- Graduate Institute of Biomedical Materials and Tissue Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei 11031, Taiwan
- International Ph.D. Program in Biomedical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei 11031, Taiwan
- International Ph.D. Program for Cell Therapy and Regeneration Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan
| | - Fan-Gang Tseng
- Department of Engineering and System Science, National Tsing Hua University, Hsinchu 30013, Taiwan; (H.-Y.C.); (C.-J.H.); (Y.-W.L.)
- Department of Engineering and System Science, Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing-Hua University, Hsinchu 30013, Taiwan
- Research Center for Applied Sciences, Academia Sinica, No. 128, Sec. 2, Academia Rd., Nankang, Taipei 11529, Taiwan
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Lorber D, Rotkopf R, Volk T. A minimal constraint device for imaging nuclei in live Drosophila contractile larval muscles reveals novel nuclear mechanical dynamics. LAB ON A CHIP 2020; 20:2100-2112. [PMID: 32432302 DOI: 10.1039/d0lc00214c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Muscle contractions produce reiterated cytoplasmic mechanical variations, which potentially influence nuclear mechanotransduction, however information regarding the dynamics of muscle nuclei (myonuclei) in the course of muscle contraction is still missing. Towards that end, a minimal constraint device was designed in which intact live Drosophila larva is imaged, while its muscles still contract. The device is placed under spinning disc confocal microscope enabling imaging of fluorescently labeled sarcomeres and nuclei during muscle contraction, without any external stimulation. As a proof of principle we studied myonuclei dynamics in wild-type, as well as in Nesprin/klar mutant larvae lacking proper nuclear-cytoskeletal connections. Myonuclei in control larvae exhibited comparable dynamics in the course of multiple contractile events, independent of their position along the muscle fiber. In contrast, myonuclei of mutant larvae displayed differential dynamics at distinct positions along individual myofibers. Moreover, we identified a linear link between myonuclear volume and its acceleration values during muscle contraction which, in Nesprin/klar mutants exhibited an opposite tendency relative to control. Estimation of the drag force applied on individual myonuclei revealed that force fluctuations in time, but not the average force, differed significantly between control and Nesprin/klar mutant, and were considerably higher in the mutant myonuclei. Taken together these results imply significant alterations in the mechanical dynamics of individual myonuclei in the Nesprin/klar myonuclei relative to control. Such differences provide novel mechanical insight into Nesprin function in contractile muscles, and might reveal the mechanical basis underlying Nesprin-related human diseases.
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Affiliation(s)
- Dana Lorber
- Department of Molecular Genetics, Weizmann Institute of Science, Israel.
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Encapsulation of Black Seed Oil in Alginate Beads as a pH-Sensitive Carrier for Intestine-Targeted Drug Delivery: In Vitro, In Vivo and Ex Vivo Study. Pharmaceutics 2020; 12:pharmaceutics12030219. [PMID: 32131539 PMCID: PMC7150899 DOI: 10.3390/pharmaceutics12030219] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 02/23/2020] [Accepted: 02/24/2020] [Indexed: 12/13/2022] Open
Abstract
Black seed oil (BSO) has been used for various therapeutic purposes around the world since ancient eras. It is one of the most prominent oils used in nutraceutical formulations and daily consumption for its significant therapeutic value is common phenomena. The main aim of this study was to develop alginate-BSO beads as a controlled release system designed to control drug release in the gastrointestinal tract (GIT). Electrospray technology facilitates formulation of small and uniform beads with higher diffusion and swelling rates resulting in process performance improvement. The effect of different formulation and process variables was evaluated on the internal and external bead morphology, size, shape, encapsulation efficiency, swelling rate, in vitro drug release, release mechanism, ex vivo mucoadhesive strength and gastrointestinal tract qualitative and quantitative distribution. All the formulated beads showed small sizes of 0.58 ± 0.01 mm (F8) and spherical shape of 0.03 ± 0.00 mm. The coefficient of weight variation (%) ranged from 1.37 (F8) to 3.93 (F5) ng. All formulations (F1–F9) were studied in vitro for release characteristics and swelling behaviour, then the release data were fitted to various equations to determine the exponent (ns), swelling kinetic constant (ks), swelling rate (%/h), correlation coefficient (r2) and release kinetic mechanism. The oil encapsulation efficiency was almost complete at 90.13% ± 0.93% in dried beads. The maximum bead swelling rate showed 982.23 (F8, r2 = 0.996) in pH 6.8 and the drug release exceeded 90% in simulated gastrointestinal fluid (pH 6.8). Moreover, the beads were well distributed throughout various parts of the intestine. This designed formulation could possibly be advantageous in terms of increased bioavailability and targeted drug delivery to the intestine region and thus may find applications in some diseases like irritable bowel syndrome.
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25
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Balestrazzi A, Passali GC, Passali D, Damiani V, Ciprandi G, Balestrazzi E. A new therapeutic approach for the Dry Eye Syndrome in patients with laryngopharyngeal reflux: first data. ACTA BIO-MEDICA : ATENEI PARMENSIS 2020; 91:36-42. [PMID: 32073559 PMCID: PMC7947740 DOI: 10.23750/abm.v91i1-s.9250] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Indexed: 11/04/2022]
Abstract
Laryngopharyngeal reflux (LPR) is a common disorder. Pepsin has been detected also at eye level, this was a starting point for newest theories about LPR impact on Dry Eye Syndrome. The current preliminary study compared two treatments in patients with Dry Eye Syndrome and LPR. Patients were treated with Gastroftal eye drops and Gastroftal tablets or hyaluronic acid eye drops for 3 months. The following parameters were evaluated: Ocular Surface Disease Index (OSDI), OSDI categories, Reflux Symptom Index (RSI), Reflux Finding Score (RFS), Fluorescein Tear Breakup Time (B-TUT), and Schirmer test before and after treatment. On the whole, 21 patients were enrolled: 10 were treated with hyaluronic acid Atlantis (Group A) and 11 with Gastroftal eye drops and tablets (Group B). After treatment, in Group A only OSDI significantly diminished (p=0.029); in Group B there were significant reductions concerning OSDI (p=0.0277), OSDI categories (p=0.0211), RSI (p=0.0172), Schirmer test (p=0.0172), T-BUT (p=0.0265), and RFS (p=0.0205). The current preliminary demonstrated that the combined ocular and systemic therapy with hyaluronic acid, Magnesium alginate, Simethicone, and Camelia sinensis may be considered a promising treatment in patients with Dry Eye Syndrome due to LPR.
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Zhang J, Ke J, Zhu Y, Song J, Yang J, Wen C, Zhang L. Influence of divalent cations on the biofouling behaviors of alginate hydrogels. ACTA ACUST UNITED AC 2019; 15:015003. [PMID: 31530756 DOI: 10.1088/1748-605x/ab4542] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Alginate is one of the most favorable materials in many biomedical applications. The mechanical properties of alginate hydrogels can be easily tailored by adding different concentrations of divalent cations. In this work, we demonstrate that the method can also notably influence the biofouling behaviors of alginate hydrogels. A series of alginate hydrogels was prepared by tuning the concentrations of two types of divalent cation (Ca2+ or Ba2+). It was found that the biofouling behaviors of the hydrogels exhibited a 'U' curve tendency with the cation concentrations. Interestingly, we found that in optimal conditions ([Ca2+] = 0.9 mM or [Ba2+] = 0.54 mM), the resultant Ca0.9- and Ba0.54-alginate hydrogels were able to achieve negligible adhesion of the proteins and bacteria. Moreover, these two formulations were also able to prevent inflammatory responses at least 4 weeks after subcutaneous implantation in a mouse model. The findings in this work provide more insights into the design and development of appropriate alginate hydrogels for different applications.
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Affiliation(s)
- Jiamin Zhang
- Department of Biochemical Engineering, School of Chemical Engineering and Technology, Frontier Science Centre for Synthetic Biology and Key Laboratory of Systems Bioengineering (MOE), Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University, Tianjin, 300350, People's Republic of China. Qingdao Institute for Marine Technology of Tianjin University, Qingdao 266235, People's Republic of China. Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300192, People's Republic of China
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27
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Ion-exchanging dialysis as an effective method for protein entrapment in curdlan hydrogel. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 105:110025. [DOI: 10.1016/j.msec.2019.110025] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 06/26/2019] [Accepted: 07/26/2019] [Indexed: 11/15/2022]
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28
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Biolubrication synergy: Hyaluronan - Phospholipid interactions at interfaces. Adv Colloid Interface Sci 2019; 274:102050. [PMID: 31669714 DOI: 10.1016/j.cis.2019.102050] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 10/15/2019] [Accepted: 10/16/2019] [Indexed: 11/24/2022]
Abstract
The manner in which nature has solved lubrication issues has fascinated scientists for centuries, in particular when considering that lubrication is achieved in aqueous media. The most outstanding system in this respect is likely the synovial joint, where close to frictionless motion is realized under different loads and shear rates. This review article focuses on two components present in the synovial area, hyaluronan and phospholipids. We recapitulate what has been learned about their interactions at interfaces from recent experiments, with focus on results obtained using reflectivity techniques at large scale facilities. In parallel, modelling experiments have been carried out and from these efforts new detailed knowledge about how hyaluronan and phospholipids interact has been gained. In this review we combine findings from modelling and experiments to gain deeper insight. Finally, we summarize what has been learned of the lubrication performance of mixtures of phospholipids and hyaluronan.
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29
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Pérez-Madrigal MM, Shaw JE, Arno MC, Hoyland JA, Richardson SM, Dove AP. Robust alginate/hyaluronic acid thiol-yne click-hydrogel scaffolds with superior mechanical performance and stability for load-bearing soft tissue engineering. Biomater Sci 2019; 8:405-412. [PMID: 31729512 DOI: 10.1039/c9bm01494b] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Hydrogels based on hyaluronic acid (HA) exhibit great potential as tissue engineering (TE) scaffolds as a consequence of their unique biological features. Herein, we examine how the advantages of two natural polymers (i.e. HA and alginate) are combined with the efficiency and rapid nature of the thiol-yne click chemistry reaction to obtain biocompatible matrices with tailored properties. Our injectable click-hydrogels revealed excellent mechanical performance, long-term stability, high cytocompatibility and adequate stiffness for the targeted application. This simple approach yielded HA hydrogels with characteristics that make them suitable for applications as 3D scaffolds to support and promote soft tissue regeneration.
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Affiliation(s)
| | - Joshua E Shaw
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, University of Manchester, Manchester M13 9PT, UK
| | - Maria C Arno
- School of Chemistry, University of Birmingham Edgbaston, Birmingham, B15 2TT, UK.
| | - Judith A Hoyland
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, University of Manchester, Manchester M13 9PT, UK and NIHR Manchester Biomedical Research Centre, Central Manchester Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK
| | - Stephen M Richardson
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, University of Manchester, Manchester M13 9PT, UK
| | - Andrew P Dove
- School of Chemistry, University of Birmingham Edgbaston, Birmingham, B15 2TT, UK.
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30
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Banerjee S, Tiwade PB, Sambhav K, Banerjee C, Bhaumik SK. Effect of alginate concentration in wastewater nutrient removal using alginate-immobilized microalgae beads: Uptake kinetics and adsorption studies. Biochem Eng J 2019. [DOI: 10.1016/j.bej.2019.107241] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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31
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Growth factor delivery: Defining the next generation platforms for tissue engineering. J Control Release 2019; 306:40-58. [DOI: 10.1016/j.jconrel.2019.05.028] [Citation(s) in RCA: 98] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 05/15/2019] [Accepted: 05/17/2019] [Indexed: 12/14/2022]
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32
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Rabizadeh T, Morgan DJ, Peacock CL, Benning LG. Effectiveness of Green Additives vs Poly(acrylic acid) in Inhibiting Calcium Sulfate Dihydrate Crystallization. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.8b02904] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Taher Rabizadeh
- School of Earth and Environment, University of Leeds, Leeds LS2 9JT, United Kingdom
- Department of Materials Engineering, Faculty of Mechanical Engineering, University of Tabriz, 51666-16471 Tabriz, Iran
| | - David J. Morgan
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff CF10 3AT, United Kingdom
| | - Caroline L. Peacock
- School of Earth and Environment, University of Leeds, Leeds LS2 9JT, United Kingdom
| | - Liane G. Benning
- School of Earth and Environment, University of Leeds, Leeds LS2 9JT, United Kingdom
- GFZ, German Research Centre for Geosciences, Telegrafenberg, 14473 Potsdam, Germany
- Department of Earth Sciences, Free University of Berlin, 12249 Berlin, Germany
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33
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Polycaprolactone porous template facilitates modulated release of molecules from alginate hydrogels. REACT FUNCT POLYM 2018. [DOI: 10.1016/j.reactfunctpolym.2018.09.016] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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34
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Bernardini G, Leone G, Millucci L, Consumi M, Braconi D, Spiga O, Galderisi S, Marzocchi B, Viti C, Giorgetti G, Lupetti P, Magnani A, Santucci A. Homogentisic acid induces morphological and mechanical aberration of ochronotic cartilage in alkaptonuria. J Cell Physiol 2018; 234:6696-6708. [DOI: 10.1002/jcp.27416] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Accepted: 08/21/2018] [Indexed: 12/18/2022]
Affiliation(s)
- Giulia Bernardini
- Dipartimento di Biotecnologie, Chimica e Farmacia Università degli Studi di Siena Siena Italy
| | - Gemma Leone
- Dipartimento di Biotecnologie, Chimica e Farmacia Università degli Studi di Siena Siena Italy
| | - Lia Millucci
- Dipartimento di Biotecnologie, Chimica e Farmacia Università degli Studi di Siena Siena Italy
| | - Marco Consumi
- Dipartimento di Biotecnologie, Chimica e Farmacia Università degli Studi di Siena Siena Italy
| | - Daniela Braconi
- Dipartimento di Biotecnologie, Chimica e Farmacia Università degli Studi di Siena Siena Italy
| | - Ottavia Spiga
- Dipartimento di Biotecnologie, Chimica e Farmacia Università degli Studi di Siena Siena Italy
| | - Silvia Galderisi
- Dipartimento di Biotecnologie, Chimica e Farmacia Università degli Studi di Siena Siena Italy
| | - Barbara Marzocchi
- Dipartimento di Biotecnologie, Chimica e Farmacia Università degli Studi di Siena Siena Italy
- UOC Patologia Clinica, Azienda Ospedaliera Universitaria Senese Siena Italy
| | - Cecilia Viti
- Dipartimento di Scienze Fisiche, della Terra e dell'Ambiente Università degli Studi di Siena Siena Italy
| | - Giovanna Giorgetti
- Dipartimento di Scienze Fisiche, della Terra e dell'Ambiente Università degli Studi di Siena Siena Italy
| | - Pietro Lupetti
- Dipartimento di Scienze della Vita Università degli Studi di Siena Siena Italy
| | - Agnese Magnani
- Dipartimento di Biotecnologie, Chimica e Farmacia Università degli Studi di Siena Siena Italy
| | - Annalisa Santucci
- Dipartimento di Biotecnologie, Chimica e Farmacia Università degli Studi di Siena Siena Italy
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35
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Li Z, Huang S, Liu Y, Yao B, Hu T, Shi H, Xie J, Fu X. Tuning Alginate-Gelatin Bioink Properties by Varying Solvent and Their Impact on Stem Cell Behavior. Sci Rep 2018; 8:8020. [PMID: 29789674 PMCID: PMC5964146 DOI: 10.1038/s41598-018-26407-3] [Citation(s) in RCA: 81] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Accepted: 05/11/2018] [Indexed: 01/16/2023] Open
Abstract
Bioink optimization is considered as one of main challenges in cell-laden 3D bioprinting. Alginate-Gelatin (Alg-Gel) hydrogel have been extensively used as bioink. However, its properties could be influenced by various parameters, and little is known about the evidence featuring the impact of solvent. Here we investigated four Alg-Gel bioink by varying solvent ionic strength (named B-1, B-2, B-3 and B-4). Mechanical properties and printability of bioink samples and their impacts on behaviors of encapsulated epidermal stem cells (ESCs) were tested. Bioink with increased ionic strength of solvent showed decreased stiffness and viscosity, and increased swelling and degradation by printability and mechanical property tests. Due to the increased swelling and degradation was associated with shape-maintenance of post-printing constructs, B-3 and B-4 were hardly observable after 14 days. Cellular behaviors were assessed through viability, proliferation, aggregation and differentiation tests. B-2 with optimal properties resulted in higher viability and proliferation of ESCs, and further facilitated cellular aggregation and lineage differentiation. We demonstrated that the solvent can be tuned by ionic strength to control the properties of Alg-Gel bioink and post-printing constructs, which represented a promising avenue for promotion of therapeutic stem cell behaviors in 3D bioprinting.
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Affiliation(s)
- Zhao Li
- Institute of Basic Medical Sciences, General Hospital of PLA, Beijing, P. R. China.,Key Laboratory of Tissue Repair and Regeneration of PLA, and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration, First Hospital Affiliated to General Hospital of PLA, Beijing, P. R. China
| | - Sha Huang
- Institute of Basic Medical Sciences, General Hospital of PLA, Beijing, P. R. China. .,Key Laboratory of Tissue Repair and Regeneration of PLA, and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration, First Hospital Affiliated to General Hospital of PLA, Beijing, P. R. China.
| | - Yufan Liu
- Institute of Basic Medical Sciences, General Hospital of PLA, Beijing, P. R. China.,Key Laboratory of Tissue Repair and Regeneration of PLA, and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration, First Hospital Affiliated to General Hospital of PLA, Beijing, P. R. China
| | - Bin Yao
- Key Laboratory of Tissue Repair and Regeneration of PLA, and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration, First Hospital Affiliated to General Hospital of PLA, Beijing, P. R. China.,Medical College, Nankai University, Tianjin, P. R. China
| | - Tian Hu
- Key Laboratory of Tissue Repair and Regeneration of PLA, and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration, First Hospital Affiliated to General Hospital of PLA, Beijing, P. R. China.,Medical College, Nankai University, Tianjin, P. R. China
| | - Haigang Shi
- National Research Center of Engineering Plastics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, P. R. China
| | - Jiangfan Xie
- Key Laboratory of Tissue Repair and Regeneration of PLA, and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration, First Hospital Affiliated to General Hospital of PLA, Beijing, P. R. China
| | - Xiaobing Fu
- Institute of Basic Medical Sciences, General Hospital of PLA, Beijing, P. R. China. .,Key Laboratory of Tissue Repair and Regeneration of PLA, and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration, First Hospital Affiliated to General Hospital of PLA, Beijing, P. R. China.
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36
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Christensen K, Davis B, Jin Y, Huang Y. Effects of printing-induced interfaces on localized strain within 3D printed hydrogel structures. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 89:65-74. [PMID: 29752120 DOI: 10.1016/j.msec.2018.03.014] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2017] [Revised: 01/11/2018] [Accepted: 03/16/2018] [Indexed: 11/29/2022]
Abstract
Additive manufacturing, or 3D printing, is a promising approach for the fabrication of biological structures for regenerative medicine applications using tissue-like materials such as hydrogels. Herein, inkjet printing is implemented as a model droplet-based 3D printing technology for which interfaces have been shown to form between printed lines within printed layers of hydrogel structures. Experimental samples with interfaces in two orientations are fabricated by inkjet printing and control samples with and without interfaces are fabricated by extrusion printing and casting, respectively. The formation of partial and full interfaces is modeled in terms of printing conditions and gelation parameters, and an approach to predicting the ratio of interfacial area to the total contact area between two adjacent lines is presented. Digital image correlation is used to determine strain distributions and identify regions of increased localized deformation for samples under uniaxial tension. Despite the presence of interfaces in inkjet-printed samples, strain distributions are found to be homogeneous regardless of interface orientation, which may be attributed to the multi-layer nature of samples. Conversely, single-layer extrusion-printed samples exhibit localized regions of increased deformation between printed lines, indicating delamination along interfaces. The effective stiffness, failure strength, and failure strain of inkjet-printed samples are found to be dependent on the orientation of interfaces within layers. Specifically, inkjet-printed samples in which tensile forces pull apart interfaces exhibit significantly decreased mechanical properties compared to cast samples.
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Affiliation(s)
- Kyle Christensen
- Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville, FL 32611, USA
| | - Brian Davis
- Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville, FL 32611, USA
| | - Yifei Jin
- Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville, FL 32611, USA
| | - Yong Huang
- Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville, FL 32611, USA; Department of Biomedical Engineering, University of Florida, Gainesville, FL 32611, USA; Department of Materials Science and Engineering, University of Florida, Gainesville, FL 32611, USA.
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37
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Li N, Zhang ZJ, Li XJ, Li HZ, Cui LX, He DL. Microcapsules biologically prepared using Perilla frutescens (L.) Britt. essential oil and their use for extension of fruit shelf life. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2018; 98:1033-1041. [PMID: 28718920 DOI: 10.1002/jsfa.8552] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 07/10/2017] [Accepted: 07/12/2017] [Indexed: 06/07/2023]
Abstract
BACKGROUND Perilla essential oil (EO) possesses high antioxidant, antimicrobial and insecticidal activities, and has proven to be more reliable than chemically synthesized food preservatives. Nevertheless, EOs have disadvantages of facile photo-degradation and oxidation, which limit their use in agriculture and food industries. Microencapsulation technology that generates a polymeric coating surrounding EOs could overcome these disadvantages. RESULTS The EO concentration had a significant effect on encapsulation efficiency (EE) and loading capacity (LC). The best encapsulation conditions were obtained with 2% v/v EO, for which EE and LC were 57% and 36%, respectively. EO-loaded microspheres exhibited a crimped surface with phanic lumps by scanning electron microscopy. Thermal stability experiments revealed droplets that began to decompose sharply at 108 °C, with a 61% weight, loss, which was much lower than EOs of 98%. EO-loaded microcapsules demonstrated good antibacterial activity. Strawberry preservation studies showed that EO-loaded microcapsules could significantly inhibit strawberry decay, maintain the quality of strawberries and prolong shelf life. CONCLUSION Perilla EO-loaded microcapsules were successfully prepared by ionic gelation and were effective at inhibiting several bacterial strains. EO-alginate microcapsules could effectively delay the volatilization of EO. Perilla EO-loaded microcapsules therefore have potential for use as an antimicrobial and preservative agent in the food industry. © 2017 Society of Chemical Industry.
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Affiliation(s)
- Na Li
- School of Chemical Engineering and Environment, North University of China, Taiyuan, China
| | - Zhi-Jun Zhang
- School of Chemical Engineering and Environment, North University of China, Taiyuan, China
| | - Xiao-Jun Li
- School of Chemical Engineering and Environment, North University of China, Taiyuan, China
| | - Hui-Zhen Li
- School of Chemical Engineering and Environment, North University of China, Taiyuan, China
| | - Li-Xia Cui
- School of Chemical Engineering and Environment, North University of China, Taiyuan, China
| | - Dong-Liang He
- School of Chemical Engineering and Environment, North University of China, Taiyuan, China
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38
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Kosik-Kozioł A, Costantini M, Bolek T, Szöke K, Barbetta A, Brinchmann J, Święszkowski W. PLA short sub-micron fiber reinforcement of 3D bioprinted alginate constructs for cartilage regeneration. Biofabrication 2017; 9:044105. [DOI: 10.1088/1758-5090/aa90d7] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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39
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Bendtsen ST, Wei M. In vitro
evaluation of 3D bioprinted tri‐polymer network scaffolds for bone tissue regeneration. J Biomed Mater Res A 2017; 105:3262-3272. [DOI: 10.1002/jbm.a.36184] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Revised: 07/26/2017] [Accepted: 08/07/2017] [Indexed: 11/06/2022]
Affiliation(s)
| | - Mei Wei
- Institute of Materials Science, University of ConnecticutStorrs Connecticut 06269
- Department of Materials Science and EngineeringUniversity of ConnecticutStorrs Connecticut 06269
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40
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Sun D, Liu Y, Wu H, Ren Y, Ma X, Wu H, Sun G. Effects of gelling bath on the physical properties of alginate gel beads and the biological characteristics of entrapped HepG2 cells. Biotechnol Appl Biochem 2017; 65:263-273. [PMID: 28791765 DOI: 10.1002/bab.1585] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Revised: 05/22/2017] [Accepted: 08/02/2017] [Indexed: 11/09/2022]
Abstract
Optimizing alginate gel beads is necessary to support the survival, proliferation, and function of entrapped hepatocytes. In this study, gelling bath was modified by decreasing calcium ion concentration and increasing sodium ion concentration. Alginate gel beads (using 36% G sodium alginate) prepared in the modified gelling bath had more homogeneous structure and better mass transfer properties compared with the traditional gelling bath that contains only calcium ions. Moreover, alginate gel beads generated in the modified gelling bath could significantly promote the HepG2 cell proliferation and the growth of cell spheroids, and maintain the albumin secretion ability similar to alginate gel beads prepared in the traditional gelling bath with only calcium ions. The mass transfer properties and cell proliferation were similar in ALG beads with different M/G ratio (36% G and 55% G) generated in the modified gelling bath, whereas they were significantly increased compared with alginate gel beads (55% G) in traditional gelling bath. These results indicated that adjusting the gelling bath was a simple and convenient method to enhance the mass transfer properties of alginate gel beads for 3D hepatocyte culture, which might provide more hepatocytes for the bioartificial liver support system.
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Affiliation(s)
- Dongsheng Sun
- School of Life Science and Biotechnology, Dalian University of Technology, Dalian, People's Republic of China.,Scientific Research Center for Translational Medicine, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, People's Republic of China.,University of Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Yang Liu
- Scientific Research Center for Translational Medicine, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, People's Republic of China
| | - Hao Wu
- Scientific Research Center for Translational Medicine, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, People's Republic of China.,University of Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Ying Ren
- University of Chinese Academy of Sciences, Beijing, People's Republic of China.,Department of Biotechnology, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, People's Republic of China
| | - Xiaojun Ma
- Department of Biotechnology, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, People's Republic of China
| | - Huijian Wu
- School of Life Science and Biotechnology, Dalian University of Technology, Dalian, People's Republic of China
| | - Guangwei Sun
- Scientific Research Center for Translational Medicine, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, People's Republic of China
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41
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Vinson BT, Phamduy TB, Shipman J, Riggs B, Strong AL, Sklare SC, Murfee WL, Burow ME, Bunnell BA, Huang Y, Chrisey DB. Laser direct-write based fabrication of a spatially-defined, biomimetic construct as a potential model for breast cancer cell invasion into adipose tissue. Biofabrication 2017; 9:025013. [DOI: 10.1088/1758-5090/aa6bad] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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42
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O’Connell G, Garcia J, Amir J. 3D Bioprinting: New Directions in Articular Cartilage Tissue Engineering. ACS Biomater Sci Eng 2017; 3:2657-2668. [DOI: 10.1021/acsbiomaterials.6b00587] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Grace O’Connell
- Department
of Mechanical Engineering University of California, Berkeley, 5122 Etcheverry Hall, Berkeley, California 94720, United States
| | - Jeanette Garcia
- IBM Research-Almaden, 650
Harry Road K17/D2, San Jose, California 95120, United States
| | - Jamali Amir
- Joint Preservation Institute, 2825 J Street #440, Sacramento, California 95816, United States
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43
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Akay S, Heils R, Trieu HK, Smirnova I, Yesil-Celiktas O. An injectable alginate-based hydrogel for microfluidic applications. Carbohydr Polym 2017; 161:228-234. [PMID: 28189233 DOI: 10.1016/j.carbpol.2017.01.004] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Revised: 12/28/2016] [Accepted: 01/03/2017] [Indexed: 01/15/2023]
Abstract
The objective of this study was to develop an injectable alginate based formulation for immobilizing enzymes into microfluidic systems. The gelation was induced upon lowering the pH by addition of d-glucono-δ-lactone (GDL) and release of Ca+ ions from solid CaCO3. The effects of GDL concentration on enzymatic activity and gelation time were investigated. The results indicated that increasing the GDL concentration increased both surface area and enzymatic activity. Also, chitosan was added to the formulation at different ratios to enhance the stability of enzyme during immobilization. For microfluidic application, 100μl spiral coil single channel microchip was fabricated and alginate GDL mixture containing β-glucosidase was injected to the microchannel prior to gelation. Enzymatic conversion was performed by pumping substrate (pNPG) through the microchannel. The results indicated that the entire substrate was converted continuously during 24h without any leakage or deactivation of immobilized enzyme.
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Affiliation(s)
- Seref Akay
- Department of Bioengineering, Faculty of Engineering, Ege University, 35100 Bornova, Izmir, Turkey; Department of Genetic & Bioengineering, Faculty of Engineering, Gumushane University, 29100 Gumushane, Turkey
| | - Rene Heils
- Hamburg University of Technology, Institute of Thermal Separation Processes, Eißendorferstr. 38, D 21073 Hamburg, Germany
| | - Hoc Khiem Trieu
- Hamburg University of Technology, Institute of Microsystems Technology, Eißendorferstr. 42, M 21073 Hamburg, Germany
| | - Irina Smirnova
- Hamburg University of Technology, Institute of Thermal Separation Processes, Eißendorferstr. 38, D 21073 Hamburg, Germany
| | - Ozlem Yesil-Celiktas
- Department of Bioengineering, Faculty of Engineering, Ege University, 35100 Bornova, Izmir, Turkey.
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44
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Influence of processing conditions on the properties of alginate solutions and wet edible calcium alginate coatings. Lebensm Wiss Technol 2016. [DOI: 10.1016/j.lwt.2016.07.054] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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45
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Affiliation(s)
- Elina Yachnin
- Department of Civil and Environmental Engineering, Technion – Israel Institute of Technology, Haifa, Israel
| | - Guy Z. Ramon
- Department of Civil and Environmental Engineering, Technion – Israel Institute of Technology, Haifa, Israel
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46
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Çelik E, Bayram C, Akçapınar R, Türk M, Denkbaş EB. The effect of calcium chloride concentration on alginate/Fmoc-diphenylalanine hydrogel networks. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 66:221-229. [DOI: 10.1016/j.msec.2016.04.084] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2016] [Revised: 04/19/2016] [Accepted: 04/24/2016] [Indexed: 12/28/2022]
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47
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Benavides S, Cortés P, Parada J, Franco W. Development of alginate microspheres containing thyme essential oil using ionic gelation. Food Chem 2016; 204:77-83. [DOI: 10.1016/j.foodchem.2016.02.104] [Citation(s) in RCA: 89] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2015] [Revised: 02/12/2016] [Accepted: 02/16/2016] [Indexed: 01/08/2023]
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48
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Narayanan LK, Huebner P, Fisher MB, Spang JT, Starly B, Shirwaiker RA. 3D-Bioprinting of Polylactic Acid (PLA) Nanofiber–Alginate Hydrogel Bioink Containing Human Adipose-Derived Stem Cells. ACS Biomater Sci Eng 2016; 2:1732-1742. [DOI: 10.1021/acsbiomaterials.6b00196] [Citation(s) in RCA: 179] [Impact Index Per Article: 22.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Lokesh Karthik Narayanan
- Edward
P. Fitts Department of Industrial and Systems Engineering, North Carolina State University, 400 Daniels Hall, Raleigh, North Carolina 27695, United States
- Center
for Additive Manufacturing and Logistics, North Carolina State University, Raleigh, North Carolina 27695, United States
- Comparative
Medicine Institute, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Pedro Huebner
- Edward
P. Fitts Department of Industrial and Systems Engineering, North Carolina State University, 400 Daniels Hall, Raleigh, North Carolina 27695, United States
- Center
for Additive Manufacturing and Logistics, North Carolina State University, Raleigh, North Carolina 27695, United States
- Comparative
Medicine Institute, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Matthew B. Fisher
- Comparative
Medicine Institute, North Carolina State University, Raleigh, North Carolina 27695, United States
- Joint
Department of Biomedical Engineering, North Carolina State University and University of North Carolina at Chapel Hill, Engineering Building
III, Raleigh, North Carolina 27695, United States
- Department
of Orthopaedics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Jeffrey T. Spang
- Department
of Orthopaedics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Binil Starly
- Edward
P. Fitts Department of Industrial and Systems Engineering, North Carolina State University, 400 Daniels Hall, Raleigh, North Carolina 27695, United States
- Center
for Additive Manufacturing and Logistics, North Carolina State University, Raleigh, North Carolina 27695, United States
- Comparative
Medicine Institute, North Carolina State University, Raleigh, North Carolina 27695, United States
- Joint
Department of Biomedical Engineering, North Carolina State University and University of North Carolina at Chapel Hill, Engineering Building
III, Raleigh, North Carolina 27695, United States
| | - Rohan A. Shirwaiker
- Edward
P. Fitts Department of Industrial and Systems Engineering, North Carolina State University, 400 Daniels Hall, Raleigh, North Carolina 27695, United States
- Center
for Additive Manufacturing and Logistics, North Carolina State University, Raleigh, North Carolina 27695, United States
- Comparative
Medicine Institute, North Carolina State University, Raleigh, North Carolina 27695, United States
- Joint
Department of Biomedical Engineering, North Carolina State University and University of North Carolina at Chapel Hill, Engineering Building
III, Raleigh, North Carolina 27695, United States
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49
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Jeuken RM, Roth AK, Peters RJRW, Van Donkelaar CC, Thies JC, Van Rhijn LW, Emans PJ. Polymers in Cartilage Defect Repair of the Knee: Current Status and Future Prospects. Polymers (Basel) 2016; 8:E219. [PMID: 30979313 PMCID: PMC6432241 DOI: 10.3390/polym8060219] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Revised: 05/26/2016] [Accepted: 05/31/2016] [Indexed: 02/06/2023] Open
Abstract
Cartilage defects in the knee are often seen in young and active patients. There is a need for effective joint preserving treatments in patients suffering from cartilage defects, as untreated defects often lead to osteoarthritis. Within the last two decades, tissue engineering based techniques using a wide variety of polymers, cell sources, and signaling molecules have been evaluated. We start this review with basic background information on cartilage structure, its intrinsic repair, and an overview of the cartilage repair treatments from a historical perspective. Next, we thoroughly discuss polymer construct components and their current use in commercially available constructs. Finally, we provide an in-depth discussion about construct considerations such as degradation rates, cell sources, mechanical properties, joint homeostasis, and non-degradable/hybrid resurfacing techniques. As future prospects in cartilage repair, we foresee developments in three areas: first, further optimization of degradable scaffolds towards more biomimetic grafts and improved joint environment. Second, we predict that patient-specific non-degradable resurfacing implants will become increasingly applied and will provide a feasible treatment for older patients or failed regenerative treatments. Third, we foresee an increase of interest in hybrid construct, which combines degradable with non-degradable materials.
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Affiliation(s)
- Ralph M Jeuken
- Department of Orthopaedic Surgery, Maastricht University Medical Center, P. Debyelaan 25, Maastricht 6229 HX, The Netherlands.
| | - Alex K Roth
- Department of Orthopaedic Surgery, Maastricht University Medical Center, P. Debyelaan 25, Maastricht 6229 HX, The Netherlands.
| | | | - Corrinus C Van Donkelaar
- Department of Biomedical Engineering, Eindhoven University of Technology, P.O. Box 513, Eindhoven 5600 MB, The Netherlands.
| | - Jens C Thies
- DSM Biomedical, Koestraat 1, Geleen 6167 RA, The Netherlands.
| | - Lodewijk W Van Rhijn
- Department of Orthopaedic Surgery, Maastricht University Medical Center, P. Debyelaan 25, Maastricht 6229 HX, The Netherlands.
| | - Pieter J Emans
- Department of Orthopaedic Surgery, Maastricht University Medical Center, P. Debyelaan 25, Maastricht 6229 HX, The Netherlands.
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50
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Bartnikowski M, Akkineni AR, Gelinsky M, Woodruff MA, Klein TJ. A Hydrogel Model Incorporating 3D-Plotted Hydroxyapatite for Osteochondral Tissue Engineering. MATERIALS (BASEL, SWITZERLAND) 2016; 9:E285. [PMID: 28773410 PMCID: PMC5502978 DOI: 10.3390/ma9040285] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Revised: 03/24/2016] [Accepted: 04/06/2016] [Indexed: 12/15/2022]
Abstract
The concept of biphasic or multi-layered compound scaffolds has been explored within numerous studies in the context of cartilage and osteochondral regeneration. To date, no system has been identified that stands out in terms of superior chondrogenesis, osteogenesis or the formation of a zone of calcified cartilage (ZCC). Herein we present a 3D plotted scaffold, comprising an alginate and hydroxyapatite paste, cast within a photocrosslinkable hydrogel made of gelatin methacrylamide (GelMA), or GelMA with hyaluronic acid methacrylate (HAMA). We hypothesized that this combination of 3D plotting and hydrogel crosslinking would form a high fidelity, cell supporting structure that would allow localization of hydroxyapatite to the deepest regions of the structure whilst taking advantage of hydrogel photocrosslinking. We assessed this preliminary design in terms of chondrogenesis in culture with human articular chondrocytes, and verified whether the inclusion of hydroxyapatite in the form presented had any influence on the formation of the ZCC. Whilst the inclusion of HAMA resulted in a better chondrogenic outcome, the effect of HAP was limited. We overall demonstrated that formation of such compound structures is possible, providing a foundation for future work. The development of cohesive biphasic systems is highly relevant for current and future cartilage tissue engineering.
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Affiliation(s)
- Michal Bartnikowski
- Institute of Health and Biomedical Innovation, Queensland University of Technology, 60 Musk Avenue, Kelvin Grove, Queensland 4059, Australia.
| | - Ashwini Rahul Akkineni
- Centre for Translational Bone, Joint and Soft Tissue Research, Faculty of Medicine, Technische Universität Dresden, Fetscherstraße 74, Dresden D-01307, Germany.
| | - Michael Gelinsky
- Centre for Translational Bone, Joint and Soft Tissue Research, Faculty of Medicine, Technische Universität Dresden, Fetscherstraße 74, Dresden D-01307, Germany.
| | - Maria A Woodruff
- Institute of Health and Biomedical Innovation, Queensland University of Technology, 60 Musk Avenue, Kelvin Grove, Queensland 4059, Australia.
| | - Travis J Klein
- Institute of Health and Biomedical Innovation, Queensland University of Technology, 60 Musk Avenue, Kelvin Grove, Queensland 4059, Australia.
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