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Torabizadeh F, Talaei-Khozani T, Yaghobi A, Walker M, Mirzaei E. Enhancing chondrogenic differentiation of mesenchymal stem cells through synergistic effects of cellulose nanocrystals and plastic compression in collagen-based hydrogel for cartilage formation. Int J Biol Macromol 2024; 272:132848. [PMID: 38830491 DOI: 10.1016/j.ijbiomac.2024.132848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2024] [Revised: 05/22/2024] [Accepted: 05/31/2024] [Indexed: 06/05/2024]
Abstract
Collagen-based (COL) hydrogels could be a promising treatment option for injuries to the articular cartilage (AC) becuase of their similarity to AC native extra extracellular matrix. However, the high hydration of COL hydrogels poses challenges for AC's mechanical properties. To address this, we developed a hydrogel platform that incorporating cellulose nanocrystals (CNCs) within COL and followed by plastic compression (PC) procedure to expel the excessive fluid out. This approach significantly improved the mechanical properties of the hydrogels and enhanced the chondrogenic differentiation of mesenchymal stem cells (MSCs). Radially confined PC resulted in higher collagen fibrillar densities together with reducing fibril-fibril distances. Compressed hydrogels containing CNCs exhibited the highest compressive modulus and toughness. MSCs encapsulated in these hydrogels were initially affected by PC, but their viability improved after 7 days. Furthermore, the morphology of the cells and their secretion of glycosaminoglycans (GAGs) were positively influenced by the compressed COL-CNC hydrogel. Our findings shed light on the combined effects of PC and CNCs in improving the physical and mechanical properties of COL and their role in promoting chondrogenesis.
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Affiliation(s)
- Farid Torabizadeh
- Department of Medical Nanotechnology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Tahereh Talaei-Khozani
- Department of Anatomy, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Atefeh Yaghobi
- Department of Anatomy, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Matthew Walker
- Centre for the Cellular Microenvironment, University of Glasgow, UK
| | - Esmaeil Mirzaei
- Department of Medical Nanotechnology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran.
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2
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Gouldin AG, Brown ME, Puetzer JL. An inducible model for unraveling the effects of advanced glycation end-product accumulation in aging connective tissues. Connect Tissue Res 2022; 63:406-424. [PMID: 34706612 DOI: 10.1080/03008207.2021.1991333] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
PURPOSE In connective tissues there is a clear link between increasing age and degeneration. Advanced glycation end-products (AGEs) are believed to play a central role. AGEs are sugar-induced non-enzymatic crosslinks which accumulate in collagen with age and diabetes, altering tissue mechanics and cellular function. Despite ample correlative evidence linking collagen glycation to tissue degeneration, little is known how AGEs impact cell-matrix interactions, limiting therapeutic options. One reason for this limited understanding is that AGEs are typically induced using high concentrations of ribose which decrease cell viability, making it impossible to investigate cell-matrix interactions. The objective of this study was to develop a system to trigger AGE accumulation while maintaining cell viability. MATERIALS AND METHODS Using cell-seeded high density collagen gels, we investigated the effect of two systems for AGE induction, ribose at low concentrations (30, 100, and 200 mM) over 15 days of culture and riboflavin (0.25 and 0.75 mM) induced with blue light for 40 seconds (riboflavin-465 nm). RESULTS We found ribose and riboflavin-465 nm treatment produces fluorescent AGE quantities which match and/or exceed human fluorescent AGE levels for various tissues, ages, and diseases, without affecting cell viability or metabolism. Interestingly, a 40 second treatment of riboflavin-465 nm produced similar levels of fluorescent AGEs as 3 days of 100 mM ribose treatment. CONCLUSIONS Riboflavin-465 nm is a promising method to trigger AGEs on demand in vivo or in vitro without impacting cell viability and offers potential for unraveling the mechanism of AGEs in age and diabetes related tissue damage.
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Affiliation(s)
- Austin G Gouldin
- Departments of Biomedical Engineering; Orthopaedic Surgery, Virginia Commonwealth University, Richmond, Virginia, United States
| | - M Ethan Brown
- Departments of Biomedical Engineering; Orthopaedic Surgery, Virginia Commonwealth University, Richmond, Virginia, United States
| | - Jennifer L Puetzer
- Departments of Biomedical Engineering; Orthopaedic Surgery, Virginia Commonwealth University, Richmond, Virginia, United States
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3
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Darvish DM. Collagen fibril formation in vitro: From origin to opportunities. Mater Today Bio 2022; 15:100322. [PMID: 35757034 PMCID: PMC9218154 DOI: 10.1016/j.mtbio.2022.100322] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 06/07/2022] [Accepted: 06/09/2022] [Indexed: 12/13/2022] Open
Abstract
Sometimes, to move forward, it is necessary to look back. Collagen type I is one of the most commonly used biomaterials in tissue engineering and regenerative medicine. There are a variety of collagen scaffolds and biomedical products based on collagen have been made, and the development of new ones is still ongoing. Materials, where collagen is in the fibrillar form, have some advantages: they have superior mechanical properties, higher degradation time and, what is most important, mimic the structure of the native extracellular matrix. There are some standard protocols for the formation of collagen fibrils in vitro, but if we look more carefully at those methods, we can see some controversies. For example, why is the formation of collagen gel commonly carried out at 37 °C, when it was well investigated that the temperature higher than 35 °C results in a formation of not well-ordered fibrils? Biomimetic collagen materials can be obtained both using culture medium or neutralizing solution, but it requires a deep understanding of all of the crucial points. One of this point is collagen extraction method, since not every method retains the ability of collagen to reconstitute native banded fibrils. Collagen polymorphism is also often overlooked in spite of the appearance of different polymorphic forms during fibril formation is possible, especially when collagen blends are utilized. In this review, we will not only pay attention to these issues, but we will overview the most prominent works related to the formation of collagen fibrils in vitro starting from the first approaches and moving to the up-to-date recipes.
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Affiliation(s)
- Diana M Darvish
- Institute of Cytology of the Russian Academy of Sciences, Tikhoretsky Prospekt, 4, Saint-Petersburg, 194064, Russia
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4
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Habanjar O, Diab-Assaf M, Caldefie-Chezet F, Delort L. 3D Cell Culture Systems: Tumor Application, Advantages, and Disadvantages. Int J Mol Sci 2021; 22:12200. [PMID: 34830082 PMCID: PMC8618305 DOI: 10.3390/ijms222212200] [Citation(s) in RCA: 154] [Impact Index Per Article: 51.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 11/05/2021] [Accepted: 11/07/2021] [Indexed: 01/09/2023] Open
Abstract
The traditional two-dimensional (2D) in vitro cell culture system (on a flat support) has long been used in cancer research. However, this system cannot be fully translated into clinical trials to ideally represent physiological conditions. This culture cannot mimic the natural tumor microenvironment due to the lack of cellular communication (cell-cell) and interaction (cell-cell and cell-matrix). To overcome these limitations, three-dimensional (3D) culture systems are increasingly developed in research and have become essential for tumor research, tissue engineering, and basic biology research. 3D culture has received much attention in the field of biomedicine due to its ability to mimic tissue structure and function. The 3D matrix presents a highly dynamic framework where its components are deposited, degraded, or modified to delineate functions and provide a platform where cells attach to perform their specific functions, including adhesion, proliferation, communication, and apoptosis. So far, various types of models belong to this culture: either the culture based on natural or synthetic adherent matrices used to design 3D scaffolds as biomaterials to form a 3D matrix or based on non-adherent and/or matrix-free matrices to form the spheroids. In this review, we first summarize a comparison between 2D and 3D cultures. Then, we focus on the different components of the natural extracellular matrix that can be used as supports in 3D culture. Then we detail different types of natural supports such as matrigel, hydrogels, hard supports, and different synthetic strategies of 3D matrices such as lyophilization, electrospiding, stereolithography, microfluid by citing the advantages and disadvantages of each of them. Finally, we summarize the different methods of generating normal and tumor spheroids, citing their respective advantages and disadvantages in order to obtain an ideal 3D model (matrix) that retains the following characteristics: better biocompatibility, good mechanical properties corresponding to the tumor tissue, degradability, controllable microstructure and chemical components like the tumor tissue, favorable nutrient exchange and easy separation of the cells from the matrix.
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Affiliation(s)
- Ola Habanjar
- Université Clermont-Auvergne, INRAE, UNH, Unité de Nutrition Humaine, CRNH-Auvergne, 63000 Clermont-Ferrand, France; (O.H.); (F.C.-C.)
| | - Mona Diab-Assaf
- Equipe Tumorigénèse Pharmacologie Moléculaire et Anticancéreuse, Faculté des Sciences II, Université Libanaise Fanar, Beyrouth 1500, Liban;
| | - Florence Caldefie-Chezet
- Université Clermont-Auvergne, INRAE, UNH, Unité de Nutrition Humaine, CRNH-Auvergne, 63000 Clermont-Ferrand, France; (O.H.); (F.C.-C.)
| | - Laetitia Delort
- Université Clermont-Auvergne, INRAE, UNH, Unité de Nutrition Humaine, CRNH-Auvergne, 63000 Clermont-Ferrand, France; (O.H.); (F.C.-C.)
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5
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Lama M, Raveendranathan B, Brun J, Fernandes FM, Boissière C, Nassif N, Marcellan A. Biomimetic Tough Gels with Weak Bonds Unravel the Role of Collagen from Fibril to Suprafibrillar Self-Assembly. Macromol Biosci 2021; 21:e2000435. [PMID: 33881218 DOI: 10.1002/mabi.202000435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 03/04/2021] [Indexed: 11/10/2022]
Abstract
Biological tissues rich in type I collagen exhibit specific hierarchical fibrillar structures together with remarkable mechanical toughness. However, the role of collagen alone in their mechanical response at different structural levels is not fully understood. Here, it is proposed to rationalize such challenging interplay from a materials science perspective through the subtle control of this protein self-assembly in vitro. It is relied on a spray-processing approach to readily use the collagen phase diagram and set a palette of biomimetic self-assembled collagen gels in terms of suprafibrillar organization. Their mechanical responses unveil the involvement of mechanisms occurring either at fibrillar or suprafibrillar scales. Noticeably, both modulus at early stage of deformations and tensile toughness probe the suprafibrillar organization, while durability under cyclic loading and stress relaxation reflect mechanisms at the fibril level. By changing the physicochemical environment, the interfibrillar interactions are modified toward more biomimetic mechanical responses. The possibility of making tissue-like materials with versatile compositions and toughness opens perspectives in tissue engineering.
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Affiliation(s)
- Milena Lama
- Laboratoire Chimie de la Matière Condensée de Paris, Collège de France, Sorbonne Université, CNRS, 4 Place Jussieu, Paris, F-75005, France.,Sciences et Ingénierie de la Matière Molle, ESPCI Paris, PSL University, CNRS, Sorbonne Université, 10 rue Vauquelin, Paris, F-75005, France
| | - Biravena Raveendranathan
- Laboratoire Chimie de la Matière Condensée de Paris, Collège de France, Sorbonne Université, CNRS, 4 Place Jussieu, Paris, F-75005, France
| | - Julie Brun
- Laboratoire Chimie de la Matière Condensée de Paris, Collège de France, Sorbonne Université, CNRS, 4 Place Jussieu, Paris, F-75005, France.,Sciences et Ingénierie de la Matière Molle, ESPCI Paris, PSL University, CNRS, Sorbonne Université, 10 rue Vauquelin, Paris, F-75005, France
| | - Francisco M Fernandes
- Laboratoire Chimie de la Matière Condensée de Paris, Collège de France, Sorbonne Université, CNRS, 4 Place Jussieu, Paris, F-75005, France
| | - Cédric Boissière
- Laboratoire Chimie de la Matière Condensée de Paris, Collège de France, Sorbonne Université, CNRS, 4 Place Jussieu, Paris, F-75005, France
| | - Nadine Nassif
- Laboratoire Chimie de la Matière Condensée de Paris, Collège de France, Sorbonne Université, CNRS, 4 Place Jussieu, Paris, F-75005, France
| | - Alba Marcellan
- Sciences et Ingénierie de la Matière Molle, ESPCI Paris, PSL University, CNRS, Sorbonne Université, 10 rue Vauquelin, Paris, F-75005, France.,Institut Universitaire de France (IUF), 1, rue Descartes, Paris, F-75005, France
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6
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Abstract
Living tissues, heterogeneous at the microscale, usually scatter light. Strong scattering is responsible for the whiteness of bones, teeth, and brain and is known to limit severely the performances of biomedical optical imaging. Transparency is also found within collagen-based extracellular tissues such as decalcified ivory, fish scales, or cornea. However, its physical origin is still poorly understood. Here, we unveil the presence of a gap of transparency in scattering fibrillar collagen matrices within a narrow range of concentration in the phase diagram. This precholesteric phase presents a three-dimensional (3D) orientational order biomimetic of that in natural tissues. By quantitatively studying the relation between the 3D fibrillar network and the optical and mechanical properties of the macroscopic matrices, we show that transparency results from structural partial order inhibiting light scattering, while preserving mechanical stability, stiffness, and nonlinearity. The striking similarities between synthetic and natural materials provide insights for better understanding the occurring transparency.
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7
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Ferruzzi J, Zhang Y, Roblyer D, Zaman MH. Multi-scale Mechanics of Collagen Networks: Biomechanical Basis of Matrix Remodeling in Cancer. MULTI-SCALE EXTRACELLULAR MATRIX MECHANICS AND MECHANOBIOLOGY 2020. [DOI: 10.1007/978-3-030-20182-1_11] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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8
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Lane BA, Harmon KA, Goodwin RL, Yost MJ, Shazly T, Eberth JF. Constitutive modeling of compressible type-I collagen hydrogels. Med Eng Phys 2018; 53:39-48. [PMID: 29396019 PMCID: PMC6050051 DOI: 10.1016/j.medengphy.2018.01.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Revised: 12/12/2017] [Accepted: 01/03/2018] [Indexed: 01/15/2023]
Abstract
Collagen hydrogels have been used ubiquitously as engineering biomaterials with a biphasic network of fibrillar collagen and aqueous-filled voids that contribute to a complex, compressible, and nonlinear mechanical behavior - not well captured within the infinitesimal strain theory. In this study, type-I collagen, processed from a bovine corium, was fabricated into disks at 2, 3, and 4% (w/w) and exposed to 0, 105, 106, and 107 microjoules of ultraviolet light or enzymatic degradation via matrix metalloproteinase-2. Fully hydrated gels were subjected to unconfined, aqueous, compression testing with experimental data modeled within a continuum mechanics framework by employing the uncommon Blatz-Ko material model for porous elastic materials and a nonlinear form of the Poisson's ratio. From the Generalized form, the Special Blatz-Ko, compressible Neo-Hookean, and incompressible Mooney-Rivlin models were derived and the best-fit material parameters reported for each. The average root-mean-squared (RMS) error for the General (RMS = 0.13 ± 0.07) and Special Blatz-Ko (RMS = 0.13 ± 0.07) were lower than the Neo-Hookean (RMS = 0.23 ± 0.10) and Mooney-Rivlin (RMS = 0.18 ± 0.08) models. We conclude that, with a single fitted-parameter, the Special Blatz-Ko sufficiently captured the salient features of collagen hydrogel compression over most examined formulations and treatments.
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Affiliation(s)
- Brooks A Lane
- University of South Carolina, Biomedical Engineering Program, Columbia, SC, USA
| | - Katrina A Harmon
- University of South Carolina, Biomedical Sciences, Greenville, SC, USA
| | - Richard L Goodwin
- University of South Carolina, Biomedical Sciences, Greenville, SC, USA
| | - Michael J Yost
- Medical University of South Carolina, Department of Surgery, Charleston SC, USA
| | - Tarek Shazly
- University of South Carolina, Biomedical Engineering Program, Columbia, SC, USA; University of South Carolina, Department of Mechanical Engineering, Columbia, SC, USA
| | - John F Eberth
- University of South Carolina, Biomedical Engineering Program, Columbia, SC, USA; University of South Carolina School of Medicine, Department of Cell Biology and Anatomy, Columbia, SC, USA.
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9
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Silvent J, Nassif N, Helary C, Azaïs T, Sire JY, Guille MMG. Collagen osteoid-like model allows kinetic gene expression studies of non-collagenous proteins in relation with mineral development to understand bone biomineralization. PLoS One 2013; 8:e57344. [PMID: 23460841 PMCID: PMC3583827 DOI: 10.1371/journal.pone.0057344] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2012] [Accepted: 01/21/2013] [Indexed: 01/14/2023] Open
Abstract
Among persisting questions on bone calcification, a major one is the link between protein expression and mineral deposition. A cell culture system is here proposed opening new integrative studies on biomineralization, improving our knowledge on the role played by non-collagenous proteins in bone. This experimental in vitro model consisted in human primary osteoblasts cultured for 60 days at the surface of a 3D collagen scaffold mimicking an osteoid matrix. Various techniques were used to analyze the results at the cellular and molecular level (adhesion and viability tests, histology and electron microscopy, RT- and qPCR) and to characterize the mineral phase (histological staining, EDX, ATG, SAED and RMN). On long term cultures human bone cells seeded on the osteoid-like matrix displayed a clear osteoblast phenotype as revealed by the osteoblast-like morphology, expression of specific protein such as alkaline phosphatase and expression of eight genes classically considered as osteoblast markers, including BGLAP, COL1A1, and BMP2. Von Kossa and alizarine red allowed us to identify divalent calcium ions at the surface of the matrix, EDX revealed the correct Ca/P ratio, and SAED showed the apatite crystal diffraction pattern. In addition RMN led to the conclusion that contaminant phases were absent and that the hydration state of the mineral was similar to fresh bone. A temporal correlation was established between quantified gene expression of DMP1 and IBSP, and the presence of hydroxyapatite, confirming the contribution of these proteins to the mineralization process. In parallel a difference was observed in the expression pattern of SPP1 and BGLAP, which questioned their attributed role in the literature. The present model opens new experimental possibilities to study spatio-temporal relations between bone cells, dense collagen scaffolds, NCPs and hydroxyapatite mineral deposition. It also emphasizes the importance of high collagen density environment in bone cell physiology.
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Affiliation(s)
- Jérémie Silvent
- UMR 7574, Chimie de la Matière Condensée de Paris, Ecole Pratique des Hautes Etudes, Université Pierre et Marie Curie, Paris, France
- UMR 7138, Equipe Evolution et développement du squelette, Université Pierre et Marie Curie, Paris, France
| | - Nadine Nassif
- UMR 7574, Chimie de la Matière Condensée de Paris, Ecole Pratique des Hautes Etudes, Université Pierre et Marie Curie, Paris, France
| | - Christophe Helary
- UMR 7574, Chimie de la Matière Condensée de Paris, Ecole Pratique des Hautes Etudes, Université Pierre et Marie Curie, Paris, France
| | - Thierry Azaïs
- UMR 7574, Chimie de la Matière Condensée de Paris, Ecole Pratique des Hautes Etudes, Université Pierre et Marie Curie, Paris, France
| | - Jean-Yves Sire
- UMR 7138, Equipe Evolution et développement du squelette, Université Pierre et Marie Curie, Paris, France
| | - Marie Madeleine Giraud Guille
- UMR 7574, Chimie de la Matière Condensée de Paris, Ecole Pratique des Hautes Etudes, Université Pierre et Marie Curie, Paris, France
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10
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LIU YS, HUANG QL, FENG QL, HU NM, ALBERT O. STRUCTURAL FEATURES AND MECHANICAL PROPERTIES OF PLLA/PEARL POWDER SCAFFOLDS. J MECH MED BIOL 2013. [DOI: 10.1142/s0219519413500206] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
In order to improve the mechanical properties of scaffolds for bone tissue engineering, the present study aims to bring calcium carbonate (CaCO3) with signaling molecules, namely pearl powder, into poly(L-lactic acid) (PLLA). PLLA/aragonite and PLLA/vaterite scaffolds were successfully fabricated by the freeze-drying method. Both composite scaffolds had a similar porous structure but a different saturated content of pearl powders. For both scaffolds, the porosity decreases and yield strength increases as pearl powder content increases. Introducing pearl powders into PLLA can improve the mechanical properties of the scaffolds. The porous structure plays a crucial role in the yield strength of pure PLLA scaffolds, whereas the yield strength of PLLA/pearl powder scaffolds mostly relies on pearl powder content.
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Affiliation(s)
- Y. S. LIU
- Laboratory of Advanced Materials, Department of Materials Science and Engineering, Tsinghua University, Beijing,100084, P. R. China
| | - Q. L. HUANG
- Laboratory of Advanced Materials, Department of Materials Science and Engineering, Tsinghua University, Beijing,100084, P. R. China
| | - Q. L. FENG
- Laboratory of Advanced Materials, Department of Materials Science and Engineering, Tsinghua University, Beijing,100084, P. R. China
| | - N. M. HU
- Department of Orthopedics, General Hospital of Ningxia Medical University, Yinchuan 750004, P. R. China
| | - O. ALBERT
- ERC Advanced Investigator Grant Research Group at the Institute for Physiological Chemistry, Mainz University Medical Center, Johannes Gutenberg University, Duesbergweg 6, D-55128 Mainz, Germany
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11
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MAO HAOJIE, WAGNER CHRISTINA, GUAN FENGJIAO, YENI YENERN, YANG KINGH. MATERIAL PROPERTIES OF ADULT RAT SKULL. J MECH MED BIOL 2012. [DOI: 10.1142/s021951941100423x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Development of advanced computational rat head models requires accurate material properties of the rat brain, meninges, skull, and other soft tissues. This study investigated adult rat skull material properties, which are very limited in the current literature. A total of 20 skull specimens were harvested from 10 adult rats. High resolution (16 μm) microcomputed tomography scans were performed for each specimen to observe dimensional changes within each specimen and internal porosities through the cross sections. The specimens were tested in three-point bending at loading velocities of 0.02 and 200 mm/s. The elastic modulus, energy absorbed to failure, energy density, and bending stress were calculated using classical beam theory. Results demonstrated that bending velocity (strain rate) had significant effect on elastic modulus and bending stress, but not on energy and energy density. The Young's moduli of rat skull measured in this study were comparable to those measured from the adult human skull.
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Affiliation(s)
- HAOJIE MAO
- Bioengineering Center, Wayne State University, Detroit, MI, 48201, USA
| | - CHRISTINA WAGNER
- Bioengineering Center, Wayne State University, Detroit, MI, 48201, USA
| | - FENGJIAO GUAN
- State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha City, Hunan, China
| | | | - KING H. YANG
- Bioengineering Center, Wayne State University, Detroit, MI, 48201, USA
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12
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WANG CHOLIN, HSIAO CHIHKUN, HSU ARTYAN, DUNG CHINGZE, CHANG CHIHHAN. BIOCOMPATIBILITY AND MECHANICAL PROPERTY OF LARS ARTIFICIAL LIGAMENT WITH TISSUE INGROWTH. J MECH MED BIOL 2012. [DOI: 10.1142/s0219519411004514] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Tissue ingrowth into the implanted artificial ligaments is to be expected after reconstructive procedures and several groups have reported soft tissue ingrowth of the implanted LARS (Ligament Augmentation and Reconstruction System, Dijon, France) artificial ligament. Up to now the influence of the tissue ingrowth on the mechanical properties of the artificial ligament is uncertain. The purpose of this research was to study the mechanical property after tissue ingrowth on LARS artificial ligament. Five LARS ligaments were implanted subcutaneously in the abdomen of five pigs. After six months of implantation, four successful implants were explanted and tested. The results showed that fibroblasts and collagen fibers had grown into the unknotted middle part of the LARS. However, 12.2 ± 2.2% of fibres were surrounded by foreign body giant cells. Tensile tests showed that the explanted LARS possessed similar elastic characteristics as native ligaments. The tensile strength of the explanted LARS decreased by 23.53 ± 18.04% (p < 0.001) and the elongation of the middle part of the explanted LARS increased by 69.84 ± 38.38% (p < 0.002) in comparison with unimplanted control ligaments. Since there were not apparent surface cracking on the LARS fibers, it was inferred that activities of foreign-body giant cells might have weakened the strength and adversely affected the mechanical properties of the fibers of the LARS.
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Affiliation(s)
- CHO-LIN WANG
- Institute of Biomedical Engineering, National Cheng Kung University, 701 Tainan, Taiwan
| | - CHIH-KUN HSIAO
- Department of Medical Research, E-da Hospital, Kauhsiung 824, Taiwan
| | - AR-TYAN HSU
- Department of Physical Therapy, National Cheng Kung University, 701 Tainan, Taiwan
| | - CHING-ZE DUNG
- Institute of Biomedical Engineering, National Cheng Kung University, 701 Tainan, Taiwan
| | - CHIH-HAN CHANG
- Institute of Biomedical Engineering, National Cheng Kung University, 701 Tainan, Taiwan
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13
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STERN AMBERRATH, STERN MATTHEWM, VAN DYKE MARKE. TRANSDUCTION OF STRAIN TO CELLS SEEDED ONTO SCAFFOLDS EXPOSED TO UNIAXIAL STRETCHING: A THREE DIMENSIONAL FINITE ELEMENT STUDY. J MECH MED BIOL 2012. [DOI: 10.1142/s0219519412004491] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
When preparing tissue engineering and regenerative medicine constructs, a commonly encountered problem is the failure of seeded cells to infiltrate the scaffold. In an increasing number of cases, constructs are being mechanically preconditioned with the expectation that preconditioning will enhance the construct's maturation and effectiveness by pre-exposing seeded cells to stimuli the tissue of interest experiences in vivo. However, whether or not mechanostimulation of a scaffold actually results in transmission of stimuli to the seeded cells remains poorly understood. The purpose of this research was to develop a model that quantifies how strain is transmitted to cells layered on a scaffold's surface compared to cells embedded within a scaffold. Three-dimensional finite element models representative of these conditions were created. When 10% strain was applied to the construct, embedded cells received the full imposed strain. However, cells growing on top of the scaffold received 5% strain within the first layer of cells, and the strain transmitted to cells in subsequent layers decreased exponentially with increasing distance from the scaffold's surface. When experimentally testing the model, strain-induced biological responses were muted in conditions where cell to scaffold contact was reduced. This research illustrates the importance of achieving cellular penetration and cell-to-scaffold contacts when mechanically conditioning tissue engineering constructs.
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Affiliation(s)
- AMBER RATH STERN
- School of Computing and Engineering and School of Dentistry, University of Missouri — Kansas City, 5100 Rockhill Road, Kansas City, MO 64110, USA
| | - MATTHEW M. STERN
- School of Nursing, University of Missouri — Kansas City, 2464 Charlotte Street, Kansas City, MO 64108, USA
| | - MARK E. VAN DYKE
- Wake Forest Institute for Regenerative Medicine, Medical Center Boulevard, Winston-Salem, NC 27157, USA
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14
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Helary C, Rodriguez-Sanchez B, Rodrigues-Sanchez B, Vigier S, Giraud Guill MM. Dense fibrillar collagen matrices to analyse extracellular matrix receptor function. ACTA ACUST UNITED AC 2011; 60:7-14. [PMID: 22153897 DOI: 10.1016/j.patbio.2011.10.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2011] [Accepted: 08/30/2011] [Indexed: 01/13/2023]
Abstract
AIM The goal of this study was to understand whether dense fibrillar collagen matrices, with a hierarchical structure resembling native collagen matrices, could be useful to study collagen receptor function, in a more physiological context. The receptor analysed here was integrin α11β1, already shown to be involved in cell attachment and migration on collagen-coated plastic, and also in contraction of loose fibrillar collagen hydrogels. MATERIALS AND METHODS Collagen matrices prepared here corresponded to dense fibrillar hydrogels concentrated at 5mg/ml. The behaviour of α11β1 deficient fibroblasts seeded on these concentrated matrices was assessed in terms of adhesion, morphology and migration, then compared to that observed on classical hydrogels at 1mg/ml, corresponding to loose collagen matrices. RESULTS Short-term attachment assays showed disturbed interactions between α11β1 deficient cells and collagen matrices in a concentration-dependent manner. Long-term assays revealed reduced cell spreading of alpha 11(-/-) cells on the dense collagen matrices, associated with a disturbed cytoskeleton network. Moreover, anoikis was observed when alpha 11(-/-) cells were seeded on 5mg/ml matrices, and not on looser 1mg/ml matrices. In scratch wound in vitro assays, carried out with cells on 5mg/ml fibrillar collagen matrices, alpha 11(-/-) cells migrated much better than their wild-type counterparts. In contrast, no significant difference was observed between wild and knock-out cells seeded on plastic. CONCLUSIONS The present study demonstrates the validity of in vivo-like dense fibrillar collagen matrices to evaluate cell receptor functions more significantly than with 2D cell cultures or loose hydrogels.
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Affiliation(s)
- C Helary
- CNRS-UMR 7574, laboratoire chimie de la matière condensée, University Pierre and Marie Curie-Paris 6, école pratique des Hautes-Études, 4, place Jussieu, 75005 Paris, France.
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Vigier S, Catania C, Baroukh B, Saffar JL, Giraud-Guille MM, Colombier ML. Dense Fibrillar Collagen Matrices Sustain Osteoblast Phenotype In Vitro and Promote Bone Formation in Rat Calvaria Defect. Tissue Eng Part A 2011; 17:889-98. [DOI: 10.1089/ten.tea.2010.0336] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Sylvain Vigier
- Université Pierre et Marie Curie, Paris VI, Ecole Pratique des Hautes Etudes, Laboratoire Chimie Matière Condensée de Paris CMCP—CNRS UMR7574, Paris, France
| | - Chelsea Catania
- Department of Materials Science and Engineering, University of Florida, Gainesville, Florida
| | - Brigitte Baroukh
- Université Paris-Descartes Paris V, Laboratoire Biothérapies de l'organe dentaire, EA 2496, Faculté de Chirurgie Dentaire, Montrouge, France
| | - Jean-Louis Saffar
- Université Paris-Descartes Paris V, Laboratoire Biothérapies de l'organe dentaire, EA 2496, Faculté de Chirurgie Dentaire, Montrouge, France
| | - Marie-Madeleine Giraud-Guille
- Université Pierre et Marie Curie, Paris VI, Ecole Pratique des Hautes Etudes, Laboratoire Chimie Matière Condensée de Paris CMCP—CNRS UMR7574, Paris, France
| | - Marie-Laure Colombier
- Université Paris-Descartes Paris V, Laboratoire Biothérapies de l'organe dentaire, EA 2496, Faculté de Chirurgie Dentaire, Montrouge, France
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Giraud Guille MM, Helary C, Vigier S, Nassif N. Dense fibrillar collagen matrices for tissue repair. SOFT MATTER 2010; 6:4963-4967. [PMID: 34154305 DOI: 10.1039/c0sm00260g] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The preparation of dense fibrillar collagen matrices, through a sol/gel transition at variable concentrations, offers routes to produce a range of simple, non toxic materials. Concentrated hydrogels entrapping cells show enhanced properties in terms of reduced contraction and enhanced cell proliferation . Dense fibrillar matrices attain tissue like mechanical properties and show ultrastructures described in connective tissues, namely liquid crystalline cholesteric geometries. Their colonization by cells and possible association with a mineral phase in a tissue like manner validate their use as biomimetic materials for regenerative medicine.
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Affiliation(s)
- Marie Madeleine Giraud Guille
- University Pierre and Marie Curie-Paris 6, Ecole Pratique des Hautes Etudes, CNRS-UMR 7574, Laboratoire Chimie de la Matière Condensée de Paris, 4 place Jussieu, 75005, Paris, France.
| | - Christophe Helary
- University Pierre and Marie Curie-Paris 6, Ecole Pratique des Hautes Etudes, CNRS-UMR 7574, Laboratoire Chimie de la Matière Condensée de Paris, 4 place Jussieu, 75005, Paris, France.
| | - Sylvain Vigier
- University Pierre and Marie Curie-Paris 6, Ecole Pratique des Hautes Etudes, CNRS-UMR 7574, Laboratoire Chimie de la Matière Condensée de Paris, 4 place Jussieu, 75005, Paris, France.
| | - Nadine Nassif
- University Pierre and Marie Curie-Paris 6, Ecole Pratique des Hautes Etudes, CNRS-UMR 7574, Laboratoire Chimie de la Matière Condensée de Paris, 4 place Jussieu, 75005, Paris, France.
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