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Snider CL, Glover CJ, Grant DA, Grant SA. Investigation of Liquid Collagen Ink for Three-Dimensional Printing. MICROMACHINES 2024; 15:490. [PMID: 38675300 PMCID: PMC11051860 DOI: 10.3390/mi15040490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Revised: 03/24/2024] [Accepted: 03/29/2024] [Indexed: 04/28/2024]
Abstract
Three-dimensional printing provides more versatility in the fabrication of scaffold materials for hard and soft tissue replacement, but a critical component is the ink. The ink solution should be biocompatible, stable, and able to maintain scaffold shape, size, and function once printed. This paper describes the development of a collagen ink that remains in a liquid pre-fibrillized state prior to printing. The liquid stability occurs due to the incorporation of ethylenediaminetetraacetic acid (EDTA) during dialysis of the collagen. Collagen inks were 3D-printed using two different printers. The resulting scaffolds were further processed using two different chemical crosslinkers, 1-Ethyl-3-[3-dimethylaminopropyl]carbodiimide hydrochloride)/N-hydroxysuccinimide (EDC/NHS) and genipin; gold nanoparticles were conjugated to the scaffolds. The 3D-printed scaffolds were characterized to determine their extrudability, stability, amount of AuNP conjugated, and overall biocompatibility via cell culture studies using fibroblast cells and stroma cells. The results demonstrated that the liquid collagen ink was amendable to 3D printing and was able to maintain its 3D shape. The scaffolds could be conjugated with gold nanoparticles and demonstrated enhanced biocompatibility. It was concluded that the liquid collagen ink is a good candidate material for the 3D printing of tissue scaffolds.
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Affiliation(s)
| | | | - David A. Grant
- Department of Chemical and Biomedical Engineering, University of Missouri, Columbia, MO 65211, USA;
| | - Sheila A. Grant
- Department of Chemical and Biomedical Engineering, University of Missouri, Columbia, MO 65211, USA;
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Metem V, Thonglam J, Juncheed K, Khangkhamano M, Kwanyuang A, Meesane J. Tissue-mimicking composite barrier membranes to prevent abdominal adhesion formation after surgery. J Mech Behav Biomed Mater 2024; 152:106417. [PMID: 38281440 DOI: 10.1016/j.jmbbm.2024.106417] [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: 11/24/2023] [Revised: 01/17/2024] [Accepted: 01/23/2024] [Indexed: 01/30/2024]
Abstract
Postoperative abdominal adhesions often occur after abdominal surgery; barrier membranes which mimic peritoneal tissue can be constructed to prevent abdominal adhesions. To this end, silk fibroin (SF) sheets were coated with polyvinyl alcohol (PVA) and agarose (AGA) at PVA:AGA ratios of 100:0, 70:30, 50:50, 30:70, and 0:100 to create a composite anti-adhesive barrier and allow us to identify a suitable coating ratio. The membranes were characterized in terms of their molecular organization, structure, and morphology using Fourier transform Infrared spectrometer (FT-IR), differential scanning calorimeter (DSC), and scanning electron microscope (SEM), respectively. The physical and mechanical properties of the membranes and their biological performance (i.e., fibroblast proliferation and invasion) were tested in vitro. Each membrane showed both smooth and rough surface characteristics. Membranes coated with PVA:AGA at ratios of 100:0, 70:30, 50:50, and 30:70 exhibited more -OH and amide III moieties than those coated with 0:100 PVA:AGA, which consequently affected structural organization, degradation, and fibroblast viability. The 0:100 PVA:AGA-coated degraded the fastest. Barrier membranes coated with 100:0 and 70:30 PVA: AGA demonstrated reduced fibroblast proliferation and attachment. The membrane coated with 70:30 PVA:AGA exhibited a stable appearance, and did not curl under wet conditions. Therefore, SF sheets coated with 70:30 PVA:AGA show promise as anti-adhesive barrier membranes for further development.
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Affiliation(s)
- Varistha Metem
- Institute of Biomedical Engineering, Department of Biomedical Science and Biomedical Engineering, Faculty of Medicine, Prince of Songkla University, Hat Yai, 90110, Songkhla, Thailand
| | - Jutakan Thonglam
- Institute of Biomedical Engineering, Department of Biomedical Science and Biomedical Engineering, Faculty of Medicine, Prince of Songkla University, Hat Yai, 90110, Songkhla, Thailand
| | - Kantida Juncheed
- Institute of Biomedical Engineering, Department of Biomedical Science and Biomedical Engineering, Faculty of Medicine, Prince of Songkla University, Hat Yai, 90110, Songkhla, Thailand
| | - Matthana Khangkhamano
- Department of Mine and Materials Engineering, Faculty of Engineering, Prince of Songkla University, Hat Yai, 90110, Songkhla, Thailand
| | - Atichart Kwanyuang
- Institute of Biomedical Engineering, Department of Biomedical Science and Biomedical Engineering, Faculty of Medicine, Prince of Songkla University, Hat Yai, 90110, Songkhla, Thailand
| | - Jirut Meesane
- Institute of Biomedical Engineering, Department of Biomedical Science and Biomedical Engineering, Faculty of Medicine, Prince of Songkla University, Hat Yai, 90110, Songkhla, Thailand.
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Abstract
The continuous flow synthesis of active pharmaceutical ingredients, value-added chemicals, and materials has grown tremendously over the past ten years. This revolution in chemical manufacturing has resulted from innovations in both new methodology and technology. This field, however, has been predominantly focused on synthetic organic chemistry, and the use of biocatalysts in continuous flow systems is only now becoming popular. Although immobilized enzymes and whole cells in batch systems are common, their continuous flow counterparts have grown rapidly over the past two years. With continuous flow systems offering improved mixing, mass transfer, thermal control, pressurized processing, decreased variation, automation, process analytical technology, and in-line purification, the combination of biocatalysis and flow chemistry opens powerful new process windows. This Review explores continuous flow biocatalysts with emphasis on new technology, enzymes, whole cells, co-factor recycling, and immobilization methods for the synthesis of pharmaceuticals, value-added chemicals, and materials.
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Affiliation(s)
- Joshua Britton
- Departments of Chemistry, Molecular Biology, and Biochemistry, University of California, Irvine, CA 92697-2025, USA.
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Costa EC, de Melo-Diogo D, Moreira AF, Carvalho MP, Correia IJ. Spheroids Formation on Non-Adhesive Surfaces by Liquid Overlay Technique: Considerations and Practical Approaches. Biotechnol J 2017; 13. [DOI: 10.1002/biot.201700417] [Citation(s) in RCA: 73] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Revised: 10/03/2017] [Accepted: 10/16/2017] [Indexed: 12/11/2022]
Affiliation(s)
- Elisabete C. Costa
- CICS-UBI − Health Sciences Research Centre; Universidade da Beira Interior; 6200-506 Covilhã Portugal
| | - Duarte de Melo-Diogo
- CICS-UBI − Health Sciences Research Centre; Universidade da Beira Interior; 6200-506 Covilhã Portugal
| | - André F. Moreira
- CICS-UBI − Health Sciences Research Centre; Universidade da Beira Interior; 6200-506 Covilhã Portugal
| | - Marco P. Carvalho
- CICS-UBI − Health Sciences Research Centre; Universidade da Beira Interior; 6200-506 Covilhã Portugal
| | - Ilídio J. Correia
- CICS-UBI − Health Sciences Research Centre; Universidade da Beira Interior; 6200-506 Covilhã Portugal
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Revell CM, Dietrich JA, Scott CC, Luttge A, Baggett LS, Athanasiou KA. Characterization of fibroblast morphology on bioactive surfaces using vertical scanning interferometry. Matrix Biol 2006; 25:523-33. [PMID: 16962756 DOI: 10.1016/j.matbio.2006.07.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2005] [Revised: 07/19/2006] [Accepted: 07/20/2006] [Indexed: 11/18/2022]
Abstract
Tissue donor scarcity is a major hindrance to articular cartilage tissue engineering. Previous research shows that dermal fibroblasts express chondrocytic markers after seeding on aggrecan-coated surfaces. Since cell roundness appears to correlate with chondrocytic behavior of dermal fibroblasts, this study quantified roundness by measuring cell height and surface area-volume ratio. In addition to aggrecan as a surface coating, collagen type II and decorin, two other major extracellular matrix components of articular cartilage, were examined. Aggrecan, collagen type II, and decorin were coated onto a glass substrate using three application techniques: static drying, airbrush, and painting. Vertical scanning interferometry (VSI) is a novel technique that allows for the expedient morphological determination of single cells. Interferometry was used for the characterization of protein-coated surfaces in addition to characterizing the morphology of single dermal fibroblasts after 24 h of seeding. Fibroblast height was found to vary from 1.0 to 4.0 microm and protein coating, application technique, and seeding position were significant factors (p < 0.002). The largest cell heights were observed on aggrecan and collagen type II coated surfaces using the air brush and static applications. Additionally, variations were observed for surface area-volume ratio, ranging from 1.75 to 11.94 microm(-1) with decorin resulting in the lowest ratio, followed by collagen type II and aggrecan. This study identifies optimal coating conditions for stimulating morphology in dermal fibroblasts that is characteristic of the chondrocytic phenotype. These conditions can be employed to attempt articular cartilage regeneration and bypass difficulties due to a paucity of donor tissue.
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Affiliation(s)
- Christopher M Revell
- Department of Bioengineering, Rice University, 6100 Main Street, Keck Hall, Suite 116, Houston, Texas 77005, USA
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Moolten FL, Schreiber B. Formation of adherent monolayers of murine lymphocytes in vitro: the use of serum-free medium and concanavalin A-coated surfaces to promote adherence. J Immunol Methods 1980; 36:359-68. [PMID: 7430658 DOI: 10.1016/0022-1759(80)90141-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Murine thymus and spleen cells formed adherent monolayers in polystyrene tissue culture flasks when plated in serum-free medium. In the presence of 2% serum, thymus cells adhered poorly, but adherence was greatly enhanced if the flasks had been coated noncovalently with the lectin, concanavalin A. Adherence of leukemic lymphocytes (L1210) required both serum-free medium and concanavalin A-coated flasks; the extent of attachment was proportional to the concentration of the lectin used to coat the flasks at concentrations up to 0.1 mg/ml. Once L1210 cells had attached, they could not be removed by exposure to serum, ethylenediamine tetraacetic acid, trypsin, or alpha-methyl mannoside. Adherent L1210 cells remained capable of metabolism and proliferation during intervals of up to 7 days. The use of adherent monolayers for cytotoxicity assays was demonstrated by an assay for Pseudomonas aeruginosa toxin in EL4 murine leukemia cells.
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