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Pipis N, Stewart KA, Tabatabaei M, Williams LN, Allen JB. Exploring the Fibrous Nature of Single-Stranded DNA-Collagen Complexes: Nanostructural Observations and Physicochemical Insights. ACS OMEGA 2024; 9:32052-32058. [PMID: 39072094 PMCID: PMC11270544 DOI: 10.1021/acsomega.4c04104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2024] [Revised: 06/26/2024] [Accepted: 07/08/2024] [Indexed: 07/30/2024]
Abstract
Nucleic acid-collagen complexes (NACCs) are a self-assembled biomimetic fibrillary platform arising from the spontaneous complexation of single-stranded DNA (ssDNA) oligonucleotides and collagen. NACCs merge the extracellular matrix functionality of collagen with the tunable bioactivity of ssDNA as aptamers for broad biomedical applications. We hypothesize that NACCs offer a hierarchical architecture across multiple length scales that significantly varies compared to native collagen. We investigate this using atomic force microscopy and electron microscopy (transmission electron microscopy and cryogenic electron microscopy). Results demonstrate key topographical differences induced by adding ssDNA oligonucleotides to collagen type I. NACCs form a dense network of intertwined collagen fiber bundles in the microscale and nanoscale while retaining their characteristic D-band periodicities (∼67 nm). Additionally, our exploration of thermodynamic parameters governing the interaction indicates an entropically favorable NACC formation driven by ssDNA. Thermal analysis demonstrates the preservation of collagen's triple helical domains and a more stabilized polypeptide structure at higher temperatures than native collagen. These findings offer important insights into our understanding of the ssDNA-induced complexation of collagen toward the further establishment of structure-property relationships in NACCs and their future development into practical biomaterials. They also provide pathways for manipulating and enhancing collagenous matrices' properties without requiring complex chemical modifications or fabrication procedures.
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Affiliation(s)
- Nikolaos Pipis
- J.
Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, Florida 32611, United States
| | - Kevin A. Stewart
- George
& Josephine Butler Polymer Research Laboratory, Department of
Chemistry, Center for Macromolecular Science and Engineering, University of Florida, Gainesville, Florida 32611, United States
| | - Mohammad Tabatabaei
- J.
Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, Florida 32611, United States
| | - Lakiesha N. Williams
- J.
Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, Florida 32611, United States
| | - Josephine B. Allen
- J.
Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, Florida 32611, United States
- Department
of Materials Science & Engineering, University of Florida, Gainesville, Florida 32611, United States
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2
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Fernandez SV, Kim J, Sadat D, Marcus C, Suh E, Mclntosh R, Shah A, Dagdeviren C. A Dynamic Ultrasound Phantom with Tissue-Mimicking Mechanical and Acoustic Properties. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2400271. [PMID: 38647427 PMCID: PMC11165531 DOI: 10.1002/advs.202400271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Revised: 03/25/2024] [Indexed: 04/25/2024]
Abstract
Tissue-mimicking phantoms are valuable tools that aid in improving the equipment and training available to medical professionals. However, current phantoms possess limited utility due to their inability to precisely simulate multiple physical properties simultaneously, which is crucial for achieving a system understanding of dynamic human tissues. In this work, novel materials design and fabrication processes to produce various tissue-mimicking materials (TMMs) for skin, adipose, muscle, and soft tissue at a human scale are developed. Target properties (Young's modulus, density, speed of sound, and acoustic attenuation) are first defined for each TMM based on literature. Each TMM recipe is developed, associated mechanical and acoustic properties are characterized, and the TMMs are confirmed to have comparable mechanical and acoustic properties with the corresponding human tissues. Furthermore, a novel sacrificial core to fabricate a hollow, ellipsoid-shaped bladder phantom complete with inlet and outlet tubes, which allow liquids to flow through and expand this phantom, is adopted. This dynamic bladder phantom with realistic mechanical and acoustic properties to human tissues in combination with the developed skin, soft tissue, and subcutaneous adipose tissue TMMs, culminates in a human scale torso tank and electro-mechanical system that can be systematically utilized for characterizing various medical imaging devices.
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Affiliation(s)
- Sara V. Fernandez
- Media LabMassachusetts Institute of TechnologyCambridgeMA02139USA
- Department of Materials Science and EngineeringMassachusetts Institute of TechnologyCambridgeMA02139USA
| | - Jin‐Hoon Kim
- Media LabMassachusetts Institute of TechnologyCambridgeMA02139USA
| | - David Sadat
- Media LabMassachusetts Institute of TechnologyCambridgeMA02139USA
| | - Colin Marcus
- Media LabMassachusetts Institute of TechnologyCambridgeMA02139USA
- Department of Electrical Engineering and Computer ScienceMassachusetts Institute of TechnologyCambridgeMA02139USA
| | - Emma Suh
- Media LabMassachusetts Institute of TechnologyCambridgeMA02139USA
- Department of Mechanical EngineeringMassachusetts Institute of TechnologyCambridgeMA02139USA
| | - Rachel Mclntosh
- Media LabMassachusetts Institute of TechnologyCambridgeMA02139USA
- Department of Electrical Engineering and Computer ScienceMassachusetts Institute of TechnologyCambridgeMA02139USA
| | - Aastha Shah
- Media LabMassachusetts Institute of TechnologyCambridgeMA02139USA
| | - Canan Dagdeviren
- Media LabMassachusetts Institute of TechnologyCambridgeMA02139USA
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3
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Borst R, Meyaard L, Pascoal Ramos MI. Understanding the matrix: collagen modifications in tumors and their implications for immunotherapy. J Transl Med 2024; 22:382. [PMID: 38659022 PMCID: PMC11040975 DOI: 10.1186/s12967-024-05199-3] [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: 12/15/2023] [Accepted: 04/13/2024] [Indexed: 04/26/2024] Open
Abstract
Tumors are highly complex and heterogenous ecosystems where malignant cells interact with healthy cells and the surrounding extracellular matrix (ECM). Solid tumors contain large ECM deposits that can constitute up to 60% of the tumor mass. This supports the survival and growth of cancerous cells and plays a critical role in the response to immune therapy. There is untapped potential in targeting the ECM and cell-ECM interactions to improve existing immune therapy and explore novel therapeutic strategies. The most abundant proteins in the ECM are the collagen family. There are 28 different collagen subtypes that can undergo several post-translational modifications (PTMs), which alter both their structure and functionality. Here, we review current knowledge on tumor collagen composition and the consequences of collagen PTMs affecting receptor binding, cell migration and tumor stiffness. Furthermore, we discuss how these alterations impact tumor immune responses and how collagen could be targeted to treat cancer.
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Affiliation(s)
- Rowie Borst
- Center for Translational Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
- Oncode Institute, Utrecht, The Netherlands
| | - Linde Meyaard
- Center for Translational Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
- Oncode Institute, Utrecht, The Netherlands
| | - M Ines Pascoal Ramos
- Center for Translational Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands.
- Oncode Institute, Utrecht, The Netherlands.
- Champalimaud Research, Champalimaud Centre for the Unknown, Lisbon, Portugal.
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4
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Kunhorm P, Chaicharoenaudomrung N, Noisa P. Cordycepin-induced Keratinocyte Secretome Promotes Skin Cell Regeneration. In Vivo 2023; 37:574-590. [PMID: 36881050 PMCID: PMC10026670 DOI: 10.21873/invivo.13116] [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: 01/06/2023] [Revised: 01/27/2023] [Accepted: 02/06/2023] [Indexed: 03/08/2023]
Abstract
BACKGROUND/AIM Skin regeneration is the intrinsic ability to repair damaged skin tissues to regaining skin well-being. Processes of wound healing, a major part of skin regeneration, involve various types of cells, including keratinocytes and dermal fibroblasts, through their autocrine/paracrine signals. The releasable factors from keratinocytes were reported to influence dermal fibroblasts behavior during wound-healing processes. Here, we developed a strategy to modulate cytokine components and improve the secretome quality of HaCaT cells, a nontumorigenic immortalized keratinocyte cell line, via the treatment of cordycepin, and designated as cordycepin-induced HaCaT secretome (CHS). MATERIALS AND METHODS The bioactivities of CHS were investigated in vitro on human dermal fibroblasts (HDF). The effects of CHS on HDF proliferation, reactive oxygen species-scavenging, cell migration, extracellular matrix production and autophagy activation were investigated by 3-(4,5-dimethylthiazol-2yl)-2,5-diphenyl tetrazolium bromide cell viability assay, dichloro-dihydro-fluorescein diacetate, the wound-healing assay, reverse transcription polymerase chain reaction and immunofluorescent microscopy. Finally, Proteome Profiler™ Array was used to determine the composition of the secretome. RESULTS CHS induced fibroblast proliferation/migration, reactive oxygen species-scavenging property, regulation of extracellular matrix synthesis, and autophagy activation. Such enhanced bioactivities of CHS were related to the increase of some key cytokines, including C-X-C motif chemokine ligand 1, interleukin 1 receptor A, interleukin 8, macrophage migration-inhibitory factor, and serpin family E member 1. CONCLUSION These findings highlight the implications of cordycepin alteration of the cytokine profile of the HaCaT secretome, which represents a novel biosubstance for the development of wound healing and skin regeneration products.
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Affiliation(s)
- Phongsakorn Kunhorm
- Laboratory of Cell-Based Assays and Innovations, School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, Nakhon Ratchasima, Thailand
| | - Nipha Chaicharoenaudomrung
- Laboratory of Cell-Based Assays and Innovations, School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, Nakhon Ratchasima, Thailand
| | - Parinya Noisa
- Laboratory of Cell-Based Assays and Innovations, School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, Nakhon Ratchasima, Thailand
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5
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Geevarghese R, Sajjadi SS, Hudecki A, Sajjadi S, Jalal NR, Madrakian T, Ahmadi M, Włodarczyk-Biegun MK, Ghavami S, Likus W, Siemianowicz K, Łos MJ. Biodegradable and Non-Biodegradable Biomaterials and Their Effect on Cell Differentiation. Int J Mol Sci 2022; 23:ijms232416185. [PMID: 36555829 PMCID: PMC9785373 DOI: 10.3390/ijms232416185] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 12/05/2022] [Accepted: 12/09/2022] [Indexed: 12/23/2022] Open
Abstract
Biomaterials for tissue scaffolds are key components in modern tissue engineering and regenerative medicine. Targeted reconstructive therapies require a proper choice of biomaterial and an adequate choice of cells to be seeded on it. The introduction of stem cells, and the transdifferentiation procedures, into regenerative medicine opened a new era and created new challenges for modern biomaterials. They must not only fulfill the mechanical functions of a scaffold for implanted cells and represent the expected mechanical strength of the artificial tissue, but furthermore, they should also assure their survival and, if possible, affect their desired way of differentiation. This paper aims to review how modern biomaterials, including synthetic (i.e., polylactic acid, polyurethane, polyvinyl alcohol, polyethylene terephthalate, ceramics) and natural (i.e., silk fibroin, decellularized scaffolds), both non-biodegradable and biodegradable, could influence (tissue) stem cells fate, regulate and direct their differentiation into desired target somatic cells.
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Affiliation(s)
- Rency Geevarghese
- Biotechnology Center, Silesian University of Technology, 44-100 Gliwice, Poland
| | - Seyedeh Sara Sajjadi
- School of Allied Medical Sciences, Shahid Beheshti University of Medical Sciences, Tehran 1971653313, Iran
| | - Andrzej Hudecki
- Łukasiewicz Network-Institute of Non-Ferrous Metals, 44-121 Gliwice, Poland
| | - Samad Sajjadi
- School of Allied Medical Sciences, Shahid Beheshti University of Medical Sciences, Tehran 1971653313, Iran
| | | | - Tayyebeh Madrakian
- Faculty of Chemistry, Bu-Ali Sina University, Hamedan 6516738695, Iran
- Autophagy Research Center, Shiraz University of Medical Sciences, Shiraz 7134845794, Iran
| | - Mazaher Ahmadi
- Faculty of Chemistry, Bu-Ali Sina University, Hamedan 6516738695, Iran
- Autophagy Research Center, Shiraz University of Medical Sciences, Shiraz 7134845794, Iran
| | - Małgorzata K. Włodarczyk-Biegun
- Biotechnology Center, Silesian University of Technology, 44-100 Gliwice, Poland
- Polymer Science, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Saeid Ghavami
- Autophagy Research Center, Shiraz University of Medical Sciences, Shiraz 7134845794, Iran
- Department of Human Anatomy and Cell Science, University of Manitoba College of Medicine, Winnipeg, MB R3E 0V9, Canada
- Research Institutes of Oncology and Hematology, Cancer Care Manitoba-University of Manitoba, Winnipeg, MB R3E 0V9, Canada
- Biology of Breathing Theme, Children Hospital Research Institute of Manitoba, University of Manitoba, Winnipeg, MB R3E 0V9, Canada
- Faculty of Medicine in Zabrze, University of Technology in Katowice, 41-800 Zabrze, Poland
| | - Wirginia Likus
- Department of Anatomy, Faculty of Health Sciences in Katowice, Medical University of Silesia, 40-752 Katowice, Poland
| | - Krzysztof Siemianowicz
- Department of Biochemistry, Faculty of Medicine in Katowice, Medical University of Silesia, 40-752 Katowice, Poland
- Correspondence: (K.S.); (M.J.Ł.); Tel.: +48-32-237-2913 (M.J.Ł.)
| | - Marek J. Łos
- Biotechnology Center, Silesian University of Technology, 44-100 Gliwice, Poland
- Autophagy Research Center, Shiraz University of Medical Sciences, Shiraz 7134845794, Iran
- Correspondence: (K.S.); (M.J.Ł.); Tel.: +48-32-237-2913 (M.J.Ł.)
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6
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Visser Z, Verma SK, Rainey JK, Frampton JP. Loading and Release of Quercetin from Contact-Drawn Polyvinyl Alcohol Fiber Scaffolds. ACS Pharmacol Transl Sci 2022; 5:1305-1317. [PMID: 36524014 PMCID: PMC9745892 DOI: 10.1021/acsptsci.2c00191] [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: 09/28/2022] [Indexed: 11/30/2022]
Abstract
Polymeric drug releasing systems have numerous applications for the treatment of chronic diseases and traumatic injuries. In this study, a simple, cost-effective, and scalable method for dry spinning of crosslinked polyvinyl alcohol (PVA) fibers is presented. This method utilizes an entangled solution of PVA to form liquid bridges that are drawn into rapidly drying fibers through extensional flow. The fibers are crosslinked by a one-pot reaction in which glyoxal is introduced to the PVA solution prior to contact drawing. Failure analysis of fiber formation is used to understand the interplay of polymer concentration, glyoxal concentration, and crosslinking time to identify appropriate formulations for the production of glyoxal-crosslinked PVA fibers. The small molecule quercetin (an anti-inflammatory plant flavonoid) can be added to the one-pot reaction and is shown to be incorporated into the fibers in a concentration-dependent manner. Upon rehydration in an aqueous medium, the glyoxal-crosslinked PVA fiber scaffolds retain their morphology and slowly degrade, as measured over the course of 10 days. As the scaffolds degrade, they release the loaded quercetin, reaching a cumulative release of 56 ± 6% of the loaded drug after 10 days. The bioactivity of the released quercetin is verified by combining quercetin-loaded fibers with contact-drawn polyethylene oxide-type I collagen (PEO-Col) fibers and monitoring the growth of PC12 cells on the fibers. PC12 cells readily attach to the PEO-Col fibers and display increased nerve growth factor-induced elongation and neurite formation in the presence of quercetin-loaded PVA fibers relative to substrates formed from only PEO-Col fibers or PEO-Col and PVA fibers without quercetin.
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Affiliation(s)
- Zachary
B. Visser
- School
of Biomedical Engineering, Dalhousie University, HalifaxB3H 4R2, Nova Scotia, Canada
| | - Surendra Kumar Verma
- School
of Biomedical Engineering, Dalhousie University, HalifaxB3H 4R2, Nova Scotia, Canada
| | - Jan K. Rainey
- School
of Biomedical Engineering, Dalhousie University, HalifaxB3H 4R2, Nova Scotia, Canada
- Department
of Biochemistry & Molecular Biology, Dalhousie University, HalifaxB3H 4R2, Nova Scotia, Canada
- Department
of Chemistry, Dalhousie University, HalifaxB3H 4R2, Nova Scotia, Canada
| | - John P. Frampton
- School
of Biomedical Engineering, Dalhousie University, HalifaxB3H 4R2, Nova Scotia, Canada
- Department
of Biochemistry & Molecular Biology, Dalhousie University, HalifaxB3H 4R2, Nova Scotia, Canada
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7
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Palit S, Kreplak L, Frampton JP. Formation of Core-Sheath Polymer Fibers by Free Surface Spinning of Aqueous Two-Phase Systems. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:4617-4624. [PMID: 35390253 DOI: 10.1021/acs.langmuir.1c03472] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Core-sheath fibers have numerous applications ranging from composite materials for advanced manufacturing to materials for drug delivery and regenerative medicine. Here, a simple and tunable approach for the generation of core-sheath fibers from immiscible solutions of dextran and polyethylene oxide is described. This approach exploits the entanglement of polymer molecules within the dextran and polyethylene oxide phases for free surface spinning into dry fibers. The mechanism by which these core-sheath fibers are produced after contact with a solid substrate (such as a microneedle) involves complex flows of the phase-separating polymer solutions, giving rise to a liquid-liquid core-sheath flow that is drawn into a liquid bridge. This liquid bridge then elongates into a core-sheath fiber through extensional flow as the contacting substrate is withdrawn. The core-sheath structure of the fibers produced by this approach is confirmed by attenuated total reflection Fourier-transform infrared spectroscopy and confocal microscopy. Tuning of the core diameter is also demonstrated by varying the weight percentage of dextran added to the reservoir from which the fibers are formed.
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Affiliation(s)
- Swomitra Palit
- Department of Physics & Atmospheric Science, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada
- School of Biomedical Engineering, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada
| | - Laurent Kreplak
- Department of Physics & Atmospheric Science, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada
- School of Biomedical Engineering, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada
| | - John P Frampton
- School of Biomedical Engineering, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada
- Department of Biochemistry & Molecular Biology, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada
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8
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Martin CL, Zhai C, Paten JA, Yeo J, Deravi LF. Design and Production of Customizable and Highly Aligned Fibrillar Collagen Scaffolds. ACS Biomater Sci Eng 2021. [PMID: 34506101 DOI: 10.1021/acsbiomaterials.1c00566] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The ability to fabricate anisotropic collagenous materials rapidly and reproducibly has remained elusive despite decades of research. Balancing the natural propensity of monomeric collagen (COL) to spontaneously polymerize in vitro with the mild processing conditions needed to maintain its native substructure upon polymerization introduces challenges that are not easily amenable with off-the-shelf instrumentation. To overcome these challenges, we have designed a platform that simultaneously aligns type I COL fibrils under mild shear flow and builds up the material through layer-by-layer assembly. We explored the mechanisms propagating fibril alignment, targeting experimental variables such as shear rate, viscosity, and time. Coarse-grained molecular dynamics simulations were also employed to help understand how initial reaction conditions including chain length, indicative of initial polymerization, and chain density, indicative of concentration, in the reaction environment impact fibril growth and alignment. When taken together, the mechanistic insights gleaned from these studies inspired the design, iteration, fabrication, and then customization of the fibrous collagenous materials, illustrating a platform material that can be readily adapted to future tissue engineering applications.
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Affiliation(s)
- Cassandra L Martin
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, Massachusetts 02115, United States
| | - Chenxi Zhai
- Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, New York 14853, United States.,Department of Mechanical Engineering, FAMU-FSU College of Engineering, Florida State University, Tallahassee, Florida 32310, United States
| | - Jeffrey A Paten
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, Massachusetts 02115, United States.,John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Jingjie Yeo
- Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Leila F Deravi
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, Massachusetts 02115, United States
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9
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Hu LY, Mileti CJ, Loomis T, Brashear SE, Ahmad S, Chellakudam RR, Wohlgemuth RP, Gionet-Gonzales MA, Leach JK, Smith LR. Skeletal muscle progenitors are sensitive to collagen architectural features of fibril size and cross linking. Am J Physiol Cell Physiol 2021; 321:C330-C342. [PMID: 34191625 DOI: 10.1152/ajpcell.00065.2021] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Muscle stem cells (MuSCs) are essential for the robust regenerative capacity of skeletal muscle. However, in fibrotic environments marked by abundant collagen and altered collagen organization, the regenerative capability of MuSCs is diminished. MuSCs are sensitive to their extracellular matrix environment but their response to collagen architecture is largely unknown. The present study aimed to systematically test the effect of underlying collagen structures on MuSC functions. Collagen hydrogels were engineered with varied architectures: collagen concentration, cross linking, fibril size, and fibril alignment, and the changes were validated with second harmonic generation imaging and rheology. Proliferation and differentiation responses of primary mouse MuSCs and immortal myoblasts (C2C12s) were assessed using EdU assays and immunolabeling skeletal muscle myosin expression, respectively. Changing collagen concentration and the corresponding hydrogel stiffness did not have a significant influence on MuSC proliferation or differentiation. However, MuSC differentiation on atelocollagen gels, which do not form mature pyridinoline cross links, was increased compared with the cross-linked control. In addition, MuSCs and C2C12 myoblasts showed greater differentiation on gels with smaller collagen fibrils. Proliferation rates of C2C12 myoblasts were also higher on gels with smaller collagen fibrils, whereas MuSCs did not show a significant difference. Surprisingly, collagen alignment did not have significant effects on muscle progenitor function. This study demonstrates that MuSCs are capable of sensing their underlying extracellular matrix (ECM) structures and enhancing differentiation on substrates with less collagen cross linking or smaller collagen fibrils. Thus, in fibrotic muscle, targeting cross linking and fibril size rather than collagen expression may more effectively support MuSC-based regeneration.
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Affiliation(s)
- Lin-Ya Hu
- Department of Neurobiology, Physiology, and Behavior, University of California, Davis, California
| | - Cassidy J Mileti
- Biomedical Engineering Graduate Group, University of California, Davis, California
| | - Taryn Loomis
- Biomedical Engineering Graduate Group, University of California, Davis, California
| | - Sarah E Brashear
- Department of Neurobiology, Physiology, and Behavior, University of California, Davis, California
| | - Sarah Ahmad
- Department of Neurobiology, Physiology, and Behavior, University of California, Davis, California
| | - Rosemary R Chellakudam
- Department of Neurobiology, Physiology, and Behavior, University of California, Davis, California
| | - Ross P Wohlgemuth
- Department of Neurobiology, Physiology, and Behavior, University of California, Davis, California
| | | | - J Kent Leach
- Department of Biomedical Engineering, University of California, Davis, California.,Department of Orthopaedic Surgery, University of California, Davis, California
| | - Lucas R Smith
- Department of Neurobiology, Physiology, and Behavior, University of California, Davis, California.,Department of Physical Medicine and Rehabilitation, University of California, Davis, California
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10
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Engineering collagen fiber templates with oriented nanoarchitecture and concerns on osteoblast behaviors. Int J Biol Macromol 2021; 185:77-86. [PMID: 34139244 DOI: 10.1016/j.ijbiomac.2021.06.072] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 05/26/2021] [Accepted: 06/10/2021] [Indexed: 12/13/2022]
Abstract
Nanostructure provides a closer structural support approximation to native bone architecture for cells and further regulates cell's behavior, resulting in the formation of functional tissues. In this work, three engineering collagen templates with oriented fiber architectures were fabricated via electrospinning (Es), plastic compression and tensile (PCT), and dynamic shear stress (SS) methods. Under the observation of POM, SEM, AFM and TEM, the PCT-template and SS-template are packed with well-oriented nanofibers with the native collagen architecture of 67 nm D-periodicity, and the mechanical properties conferred to the templates are better than that of the Es-template. When mentioning the cell's behavior, MC3T3-E1 adhered to grow along the alignment of collagen fiber orientation when cultured on the PCT-template and SS-template. The SS-template with nano- and micro-ordered architecture guided cells to stretch their plasma along with the orientation of collagen fiber, produce more aligned Type I collagen fibers and promote significantly higher osteogenic differentiation of MC3T3-E1 than the PCT-template and Es-template. Overall, it is strongly argued the feasibility of hierarchical collagen fiber architectures for bone tissue regeneration.
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11
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Chowdhry G, Chang YM, Frampton JP, Kreplak L. Polymer entanglement drives formation of fibers from stable liquid bridges of highly viscous dextran solutions. SOFT MATTER 2021; 17:1873-1880. [PMID: 33409512 DOI: 10.1039/d0sm01550d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Liquid bridges have been studied for over 200 years due to their occurrence in many natural and industrial phenomena. Most studies focus on millimeter scale liquid bridges of Newtonian liquids. Here, reptation theory was used to explain the formation of 10 cm long liquid bridges of entangled polymer solutions, which subsequently stabilize into polymer fibers with tunable diameters between 3 and 20 mm. To control the fiber formation process, a horizontal single-fiber contact drawing system was constructed consisting of a motorized stage, a micro-needle, and a liquid filled reservoir. Analyzing the liquid bridge rupture statistics as a function of elongation speed, solution concentration and dextran molecular weight revealed that the fiber formation process was governed by a single timescale attributed to the relaxation of entanglements within the polymer solution. Further characterization revealed that more viscous solutions produced fibers of larger diameters due to secondary flow dynamics. Verification that protein additives such as type I collagen had minimal effect on fiber formation demonstrates the potential application in biomaterial fabrication.
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Affiliation(s)
- Gurkaran Chowdhry
- Department of Physics and Atmospheric Science, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada.
| | - Yi Ming Chang
- Department of Physics and Atmospheric Science, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada.
| | - John P Frampton
- School of Biomedical Engineering, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada.
| | - Laurent Kreplak
- Department of Physics and Atmospheric Science, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada. and School of Biomedical Engineering, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada.
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12
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Tan EY, Suntornnond R, Yeong WY. High-Resolution Novel Indirect Bioprinting of Low-Viscosity Cell-Laden Hydrogels via Model-Support Bioink Interaction. 3D PRINTING AND ADDITIVE MANUFACTURING 2021; 8:69-78. [PMID: 36655176 PMCID: PMC9828594 DOI: 10.1089/3dp.2020.0153] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Bioprinting of unmodified soft extracellular matrix into complex 3D structures has remained challenging to fabricate. Herein, we established a novel process for the printing of low-viscosity hydrogel by using a unique support technique to retain the structural integrity of the support structure. We demonstrated that this process of printing could be used for different types of hydrogel, ranging from fast crosslinking gelatin methacrylate to slow crosslinking collagen type I. In addition, we evaluated the biocompatibility of the process by observing the effects of the cytotoxicity of L929 and the functionality of the human umbilical vein endothelium primary cells after printing. The results show that the bioprinted construct provided excellent biocompatibility as well as supported cell growth and differentiation. Thus, this is a novel technique that can be potentially used to enhance the resolution of the extrusion-based bioprinter.
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Affiliation(s)
- Edgar Y.S. Tan
- Singapore Centre for 3D Printing (SC3DP), School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore, Singapore
| | - Ratima Suntornnond
- Singapore Centre for 3D Printing (SC3DP), School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore, Singapore
- Address correspondence to: Ratima Suntornnond, Singapore Centre for 3D Printing (SC3DP), School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Block N3.1-B2C-03, Singapore 639798
| | - Wai Yee Yeong
- Singapore Centre for 3D Printing (SC3DP), School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore, Singapore
- HP-NTU Digital Manufacturing Corporate Lab, School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore, Singapore
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Zuniga K, Gadde M, Scheftel J, Senecal K, Cressman E, Van Dyke M, Rylander MN. Collagen/kerateine multi-protein hydrogels as a thermally stable extracellular matrix for 3D in vitro models. Int J Hyperthermia 2021; 38:830-845. [PMID: 34058945 PMCID: PMC10523628 DOI: 10.1080/02656736.2021.1930202] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 04/16/2021] [Accepted: 05/08/2021] [Indexed: 12/30/2022] Open
Abstract
Objective: To determine whether the addition of kerateine (reduced keratin) in rat tail collagen type I hydrogels increases thermal stability and changes material properties and supports cell growth for use in cellular hyperthermia studies for tumor treatment.Methods: Collagen type I extracted from rat tail tendon was combined with kerateine extracted from human hair fibers. Thermal, mechanical, and biocompatibility properties and cell behavior was assessed and compared to 100% collagen type I hydrogels to demonstrate their utility as a tissue model for 3D in vitro testing.Results: A combination (i.e., containing both collagen 'C/KNT') hydrogel was more thermally stable than pure collagen hydrogels and resisted thermal degradation when incubated at a hyperthermic temperature of 47°C for heating durations up to 60 min with a higher melting temperature measured by DSC. An increase in the storage modulus was only observed with an increased collagen concentration rather than an increased KTN concentration; however, a change in ECM structure was observed with greater fiber alignment and width with an increase in KTN concentration. The C/KTN hydrogels, specifically 50/50 C/KTN hydrogels, also supported the growth and of fibroblasts and MDA-MB-231 breast cancer cells similar to those seeded in 100% collagen hydrogels.Conclusion: This multi-protein C/KTN hydrogel shows promise for future studies involving thermal stress studies without compromising the 3D ECM environment or cell growth.
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Affiliation(s)
- Kameel Zuniga
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, USA
| | - Manasa Gadde
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, USA
| | - Jacob Scheftel
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, USA
| | - Kris Senecal
- Natick Soldier Center, U.S. Army Soldier and Biological Chemical Command, Natick, MA, USA
| | - Erik Cressman
- Department of Interventional Radiology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Mark Van Dyke
- College of Biomedical Engineering, The University of Arizona, Tucson, AZ, USA
| | - Marissa Nichole Rylander
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, USA
- Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX, USA
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Correa SO, Luo X, Raub CB. Microfluidic fabrication of stable collagen microgels with aligned microstructure using flow-driven co-deposition and ionic gelation. JOURNAL OF MICROMECHANICS AND MICROENGINEERING : STRUCTURES, DEVICES, AND SYSTEMS 2020; 30:085002. [PMID: 37273664 PMCID: PMC10237176 DOI: 10.1088/1361-6439/ab8ebf] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The controlled biofabrication of stable, aligned collagen hydrogels within microfluidic devices is critically important to the design of more physiologically accurate, longer-cultured on-chip models of tissue and organs. To address this goal, collagen-alginate microgels were formed in a microfluidic channel by calcium crosslinking of a flowing collagen-alginate solution through a cross-channel chitosan membrane spanning a pore allowing ion diffusion but not convection. The gels formed within seconds as isolated islands in a single channel, and their growth was self-limiting. Total gel thickness was controlled by altering the concentration of calcium and collagen-alginate flow rate to reach an equilibrium of calcium diffusion and solution convection at the gel boundary, for a desired thickness of 30-200 μm. Additionally, less calcium and higher flow produced greater compression of the gel, with regions farther from the pore compressing more. An aligned, stable collagen network was demonstrated by collagen birefringence, circumferential texture orientation, and little change in gel dimensions with de-chelation of calcium from alginate by prolonged flow of EDTA in the channel. Resultant gels were most stable and only slightly asymmetric when formed from solutions containing 8 mg ml-1 collagen. Diffusion of 4 kDa and 70 kDa fluorescently-labeled dextran indicated size-dependent diffusion across the gel, and accessibility of the construct to appropriately-sized bioactive molecules. This work demonstrates the physicochemical parameter control of collagen gel formation in microfluidic devices, with utility toward on-chip models of dense extracellular matrix invasion, cancer growth and drug delivery to cells within dense extracellular matrix bodies.
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Affiliation(s)
- Santiago O Correa
- Department of Biomedical Engineering, Washington DC, United States of America
| | - Xiaolong Luo
- Department of Mechanical Engineering, Washington DC, United States of America
- These authors contributed equally to this work
| | - Christopher B Raub
- Department of Biomedical Engineering, Washington DC, United States of America
- These authors contributed equally to this work
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15
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Zhang F, King MW. Biodegradable Polymers as the Pivotal Player in the Design of Tissue Engineering Scaffolds. Adv Healthc Mater 2020; 9:e1901358. [PMID: 32424996 DOI: 10.1002/adhm.201901358] [Citation(s) in RCA: 90] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 04/03/2020] [Indexed: 01/15/2023]
Abstract
Biodegradable polymers play a pivotal role in in situ tissue engineering. Utilizing various technologies, researchers have been able to fabricate 3D tissue engineering scaffolds using biodegradable polymers. They serve as temporary templates, providing physical and biochemical signals to the cells and determining the successful outcome of tissue remodeling. Furthermore, a biodegradable scaffold also presents the fourth dimension for tissue engineering, namely time. The properties of the biodegradable polymer change over time, presenting continuously changing features during the degradation process. These changes become more complicated when different materials are combined together to fabricate a composite or heterogeneous scaffold. This review undertakes a systematic analysis of the basic characteristics of biodegradable polymers and describe recent advances in making composite biodegradable scaffolds for in situ tissue engineering and regenerative medicine. The interaction between implanted biodegradable biomaterials and the in vivo environment are also discussed, including the properties and functional changes of the degradable scaffold, the local effect of degradation on the contiguous tissue and their evaluation using both in vitro and in vivo models.
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Affiliation(s)
- Fan Zhang
- Wilson College of TextilesNorth Carolina State University Raleigh NC 27606 USA
| | - Martin W. King
- Wilson College of TextilesNorth Carolina State University Raleigh NC 27606 USA
- College of TextilesDonghua University Songjiang District Shanghai 201620 China
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Arrabito G, Aleeva Y, Ferrara V, Prestopino G, Chiappara C, Pignataro B. On the Interaction between 1D Materials and Living Cells. J Funct Biomater 2020; 11:E40. [PMID: 32531950 PMCID: PMC7353490 DOI: 10.3390/jfb11020040] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 06/03/2020] [Accepted: 06/05/2020] [Indexed: 01/08/2023] Open
Abstract
One-dimensional (1D) materials allow for cutting-edge applications in biology, such as single-cell bioelectronics investigations, stimulation of the cellular membrane or the cytosol, cellular capture, tissue regeneration, antibacterial action, traction force investigation, and cellular lysis among others. The extraordinary development of this research field in the last ten years has been promoted by the possibility to engineer new classes of biointerfaces that integrate 1D materials as tools to trigger reconfigurable stimuli/probes at the sub-cellular resolution, mimicking the in vivo protein fibres organization of the extracellular matrix. After a brief overview of the theoretical models relevant for a quantitative description of the 1D material/cell interface, this work offers an unprecedented review of 1D nano- and microscale materials (inorganic, organic, biomolecular) explored so far in this vibrant research field, highlighting their emerging biological applications. The correlation between each 1D material chemistry and the resulting biological response is investigated, allowing to emphasize the advantages and the issues that each class presents. Finally, current challenges and future perspectives are discussed.
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Affiliation(s)
- Giuseppe Arrabito
- Dipartimento di Fisica e Chimica—Emilio Segrè, University of Palermo, Viale delle Scienze, Ed.17, 90128 Palermo, Italy;
| | - Yana Aleeva
- INSTM UdR Palermo, Viale delle Scienze, Ed.17, 90128 Palermo, Italy; (Y.A.); (C.C.)
| | - Vittorio Ferrara
- Dipartimento di Scienze Chimiche, Università di Catania, Viale Andrea Doria 6, 95125 Catania, Italy;
| | - Giuseppe Prestopino
- Dipartimento di Ingegneria Industriale, Università di Roma “Tor Vergata”, Via del Politecnico 1, I-00133 Roma, Italy;
| | - Clara Chiappara
- INSTM UdR Palermo, Viale delle Scienze, Ed.17, 90128 Palermo, Italy; (Y.A.); (C.C.)
| | - Bruno Pignataro
- Dipartimento di Fisica e Chimica—Emilio Segrè, University of Palermo, Viale delle Scienze, Ed.17, 90128 Palermo, Italy;
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17
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Nerger BA, Brun PT, Nelson CM. Marangoni flows drive the alignment of fibrillar cell-laden hydrogels. SCIENCE ADVANCES 2020; 6:eaaz7748. [PMID: 32582851 PMCID: PMC7292634 DOI: 10.1126/sciadv.aaz7748] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Accepted: 04/08/2020] [Indexed: 05/25/2023]
Abstract
When a sessile droplet containing a solute in a volatile solvent evaporates, flow in the droplet can transport and assemble solute particles into complex patterns. Transport in evaporating sessile droplets has largely been examined in solvents that undergo complete evaporation. Here, we demonstrate that flow in evaporating aqueous sessile droplets containing type I collagen-a self-assembling polymer-can be harnessed to engineer hydrated networks of aligned collagen fibers. We find that Marangoni flows direct collagen fiber assembly over millimeter-scale areas in a manner that depends on the rate of self-assembly, the relative humidity of the surrounding environment, and the geometry of the droplet. Skeletal muscle cells that are incorporated into and cultured within these evaporating droplets collectively orient and subsequently differentiate into myotubes in response to aligned networks of collagen. Our findings demonstrate a simple, tunable, and high-throughput approach to engineer aligned fibrillar hydrogels and cell-laden biomimetic materials.
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Affiliation(s)
- Bryan A. Nerger
- Department of Chemical and Biological Engineering, Princeton University, Princeton, NJ 08544, USA
| | - P.-T. Brun
- Department of Chemical and Biological Engineering, Princeton University, Princeton, NJ 08544, USA
| | - Celeste M. Nelson
- Department of Chemical and Biological Engineering, Princeton University, Princeton, NJ 08544, USA
- Department of Molecular Biology, Princeton University, Princeton, NJ 08544, USA
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Wang Y, McKinstry AH, Burke KA. Main-Chain Liquid Crystalline Hydrogels that Support 3D Stem Cell Culture. Biomacromolecules 2020; 21:2365-2375. [DOI: 10.1021/acs.biomac.0c00316] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Yongjian Wang
- Chemical and Biomolecular Engineering, University of Connecticut, 191 Auditorium Road Unit 3222, Storrs, Connecticut 06269-3222, United States
| | - Amy H. McKinstry
- Chemical and Biomolecular Engineering, University of Connecticut, 191 Auditorium Road Unit 3222, Storrs, Connecticut 06269-3222, United States
| | - Kelly A. Burke
- Chemical and Biomolecular Engineering, University of Connecticut, 191 Auditorium Road Unit 3222, Storrs, Connecticut 06269-3222, United States
- Polymer Program, Institute of Materials Science, University of Connecticut, 97 North Eagleville Road Unit 3136, Storrs, Connecticut 06269-3136, United States
- Biomedical Engineering, University of Connecticut, 260 Glenbrook Road Unit 3247, Storrs, Connecticut 06269-3247, United States
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Chuah YJ, Tan JR, Wu Y, Lim CS, Hee HT, Kang Y, Wang DA. Scaffold-Free tissue engineering with aligned bone marrow stromal cell sheets to recapitulate the microstructural and biochemical composition of annulus fibrosus. Acta Biomater 2020; 107:129-137. [PMID: 32105832 DOI: 10.1016/j.actbio.2020.02.031] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 02/05/2020] [Accepted: 02/19/2020] [Indexed: 12/19/2022]
Abstract
Current tissue engineering strategies through scaffold-based approaches fail to recapitulate the complex three-dimensional microarchitecture and biochemical composition of the native Annulus Fibrosus tissue. Considering limited access to healthy annulus fibrosus cells from patients, this study explored the potential of bone marrow stromal cells (BMSC) to fabricate a scaffold-free multilamellar annulus fibrosus-like tissue by integrating micropatterning technologies into multi-layered BMSC engineering. BMSC sheet with cells and collagen fibres aligned at ~30° with respect to their longitudinal dimension were developed on a microgroove-patterned PDMS substrate. Two sheets were then stacked together in alternating directions to form an angle-ply bilayer tissue, which was rolled up, sliced to form a multi-lamellar angle-ply tissue and cultured in a customized medium. The development of the annulus fibrosus-like tissue was further characterized by histological, gene expression and microscopic and mechanical analysis. We demonstrated that the engineered annulus fibrosus-like tissue with aligned BMSC sheet showed parallel collagen fibrils, biochemical composition and microstructures that resemble the native disk. Furthermore, aligned cell sheet showed enhanced expression of annulus fibrosus associated extracellular matrix markers and higher mechanical strength than that of the non-aligned cell sheet. The present study provides a new strategy in annulus fibrosus tissue engineering methodology to develop a scaffold-free annulus fibrosus-like tissue that resembles the microarchitecture and biochemical attributes of a native tissue. This can potentially lead to a promising avenue for advancing BMSC-mediated annulus fibrosus regeneration towards future clinical applications.
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20
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Dewle A, Pathak N, Rakshasmare P, Srivastava A. Multifarious Fabrication Approaches of Producing Aligned Collagen Scaffolds for Tissue Engineering Applications. ACS Biomater Sci Eng 2020; 6:779-797. [DOI: 10.1021/acsbiomaterials.9b01225] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Ankush Dewle
- Department of Medical Devices, National Institute of Pharmaceutical Education and Research, Opposite Air Force Station, Palaj, Gandhinagar, Gujarat 382355, India
| | - Navanit Pathak
- Department of Medical Devices, National Institute of Pharmaceutical Education and Research, Opposite Air Force Station, Palaj, Gandhinagar, Gujarat 382355, India
| | - Prakash Rakshasmare
- Department of Medical Devices, National Institute of Pharmaceutical Education and Research, Opposite Air Force Station, Palaj, Gandhinagar, Gujarat 382355, India
| | - Akshay Srivastava
- Department of Medical Devices, National Institute of Pharmaceutical Education and Research, Opposite Air Force Station, Palaj, Gandhinagar, Gujarat 382355, India
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21
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Joshi J, Brennan D, Beachley V, Kothapalli CR. Cardiomyogenic differentiation of human bone marrow-derived mesenchymal stem cell spheroids within electrospun collagen nanofiber mats. J Biomed Mater Res A 2018; 106:3303-3312. [PMID: 30242963 DOI: 10.1002/jbm.a.36530] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Revised: 07/26/2018] [Accepted: 08/16/2018] [Indexed: 12/18/2022]
Abstract
Collagen is the major structural protein in myocardium and contributes to tissue strength and integrity, cellular orientation, and cell-cell and cell-matrix interactions. Significant post-myocardial infarction related loss of cardiomyocytes and cardiac tissue, and their subsequent replacement with fibrous scar tissue, negatively impacts endogenous tissue repair and regeneration capabilities. To overcome such limitations, tissue engineers are working toward developing a 3D cardiac patch which not only mimics the structural, functional, and biological hierarchy of the native cardiac tissue, but also could deliver autologous stem cells and encourage their homing and differentiation. In this study, we examined the utility of electrospun, randomly-oriented, type-I collagen nanofiber (dia = 789 ± 162 nm) mats on the cardiomyogenic differentiation of human bone marrow-derived mesenchymal stem cells (BM-MSC) spheroids, in the presence or absence of 10 μM 5-azacytidine (aza). Results showed that these scaffolds are biocompatible and enable time-dependent evolution of early (GATA binding protein 4: GATA4), late (cardiac troponin I: cTnI), and mature (myosin heavy chain: MHC) cardiomyogenic markers, with a simultaneous reduction in CD90 (stemness) expression, independent of aza-treatment. Aza-exposure improved connexin-4 expression and sustained sarcomeric α-actin expression, but provided only transient improvement in cardiac troponin T (cTnT) expression. Cell orientation and alignment significantly improved in these nanofiber scaffolds over time and with aza-exposure. Although further quantitative in vitro and in vivo studies are needed to establish the clinical applicability of such stem-cell laden collagen nanofiber mats as cardiac patches for cardiac tissue regeneration, our results underscore the benefits of 3D milieu provided by electrospun collagen nanofiber mats, aza, and spheroids on the survival, cardiac differentiation and maturation of human BM-MSCs. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 106A: 3303-3312, 2018.
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Affiliation(s)
- Jyotsna Joshi
- Department of Chemical and Biomedical Engineering, Cleveland State University, Cleveland, Ohio, 44115
| | - David Brennan
- Department of Biomedical Engineering, Rowan University, Glassboro, New Jersey, 08028
| | - Vince Beachley
- Department of Biomedical Engineering, Rowan University, Glassboro, New Jersey, 08028
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Smith AM, Pajovich HT, Banerjee IA. Development of Self-Assembled Nanoribbon Bound Peptide-Polyaniline Composite Scaffolds and Their Interactions with Neural Cortical Cells. Bioengineering (Basel) 2018; 5:bioengineering5010006. [PMID: 29342881 PMCID: PMC5874872 DOI: 10.3390/bioengineering5010006] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2017] [Revised: 01/06/2018] [Accepted: 01/08/2018] [Indexed: 01/31/2023] Open
Abstract
Degenerative neurological disorders and traumatic brain injuries cause significant damage to quality of life and often impact survival. As a result, novel treatments are necessary that can allow for the regeneration of neural tissue. In this work, a new biomimetic scaffold was designed with potential for applications in neural tissue regeneration. To develop the scaffold, we first prepared a new bolaamphiphile that was capable of undergoing self-assembly into nanoribbons at pH 7. Those nanoribbons were then utilized as templates for conjugation with specific proteins known to play a critical role in neural tissue growth. The template (Ile-TMG-Ile) was prepared by conjugating tetramethyleneglutaric acid with isoleucine and the ability of the bolaamphiphile to self-assemble was probed at a pH range of 4 through 9. The nanoribbons formed under neutral conditions were then functionalized step-wise with the basement membrane protein laminin, the neurotropic factor artemin and Type IV collagen. The conductive polymer polyaniline (PANI) was then incorporated through electrostatic and π–π stacking interactions to the scaffold to impart electrical properties. Distinct morphology changes were observed upon conjugation with each layer, which was also accompanied by an increase in Young’s Modulus as well as surface roughness. The Young’s Modulus of the dried PANI-bound biocomposite scaffolds was found to be 5.5 GPa, indicating the mechanical strength of the scaffold. Thermal phase changes studied indicated broad endothermic peaks upon incorporation of the proteins which were diminished upon binding with PANI. The scaffolds also exhibited in vitro biodegradable behavior over a period of three weeks. Furthermore, we observed cell proliferation and short neurite outgrowths in the presence of rat neural cortical cells, confirming that the scaffolds may be applicable in neural tissue regeneration. The electrochemical properties of the scaffolds were also studied by generating I-V curves by conducting cyclic voltammetry. Thus, we have developed a new biomimetic composite scaffold that may have potential applications in neural tissue regeneration.
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Affiliation(s)
- Andrew M Smith
- Department of Chemistry, Fordham University, 441 East Fordham Road, Bronx, New York, NY 10458, USA.
| | - Harrison T Pajovich
- Department of Chemistry, Fordham University, 441 East Fordham Road, Bronx, New York, NY 10458, USA.
| | - Ipsita A Banerjee
- Department of Chemistry, Fordham University, 441 East Fordham Road, Bronx, New York, NY 10458, USA.
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