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Ben Messaoud G, Aveic S, Wachendoerfer M, Fischer H, Richtering W. 3D Printable Gelatin Methacryloyl (GelMA)-Dextran Aqueous Two-Phase System with Tunable Pores Structure and Size Enables Physiological Behavior of Embedded Cells In Vitro. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2208089. [PMID: 37403299 DOI: 10.1002/smll.202208089] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 06/23/2023] [Indexed: 07/06/2023]
Abstract
The restricted porosity of most hydrogels established for in vitro 3D tissue engineering applications limits embedded cells with regard to their physiological spreading, proliferation, and migration behavior. To overcome these confines, porous hydrogels derived from aqueous two-phase systems (ATPS) are an interesting alternative. However, while developing hydrogels with trapped pores is widespread, the design of bicontinuous hydrogels is still challenging. Herein, an ATPS consisting of photo-crosslinkable gelatin methacryloyl (GelMA) and dextran is presented. The phase behavior, monophasic or biphasic, is tuned via the pH and dextran concentration. This, in turn, allows the formation of hydrogels with three distinct microstructures: homogenous nonporous, regular disconnected-pores, and bicontinuous with interconnected-pores. The pore size of the latter two hydrogels can be tuned from ≈4 to 100 µm. Cytocompatibility of the generated ATPS hydrogels is confirmed by testing the viability of stromal and tumor cells. Their distribution and growth pattern are cell-type specific but are also strongly defined by the microstructure of the hydrogel. Finally, it is demonstrated that the unique porous structure is sustained when processing the bicontinuous system by inkjet and microextrusion techniques. The proposed ATPS hydrogels hold great potential for 3D tissue engineering applications due to their unique tunable interconnected porosity.
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Affiliation(s)
- Ghazi Ben Messaoud
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, European Union, 52074, Aachen, Germany
- DWI-Leibniz Institute for Interactive Materials, Forckenbeckstrasse 50, European Union, 52074, Aachen, Germany
| | - Sanja Aveic
- Department of Dental Materials and Biomaterials Research, RWTH Aachen University Hospital, 52074, Aachen, Germany
| | - Mattis Wachendoerfer
- Department of Dental Materials and Biomaterials Research, RWTH Aachen University Hospital, 52074, Aachen, Germany
| | - Horst Fischer
- Department of Dental Materials and Biomaterials Research, RWTH Aachen University Hospital, 52074, Aachen, Germany
| | - Walter Richtering
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, European Union, 52074, Aachen, Germany
- DWI-Leibniz Institute for Interactive Materials, Forckenbeckstrasse 50, European Union, 52074, Aachen, Germany
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Robo I, Heta S, Papakozma D, Ostreni V. Modification of implant surfaces to stimulate mesenchymal cell activation. BULLETIN OF THE NATIONAL RESEARCH CENTRE 2022; 46:52. [PMID: 35261541 PMCID: PMC8894561 DOI: 10.1186/s42269-022-00743-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 02/21/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND The process of osteointegration, as key point has the activation of mesenchymal cells at implant-bone interspace, their differentiation into osteoblasts and connection between the implant surface and the surrounding bone. MAIN TEXT Implant surfaces composed by biocompatible, organism-friendly materials require changes in content and surface morphology; changes that may further stimulate mesenchymal cell activation. The way the implant surfaces are affected with advantages and disadvantages, that typically bring each methodology, is also the purpose of this study. The study is of review type, based on finding articles about implant surface modification, with the aim of promoting the mesenchymal cell activation, utilizing keyword combination. CONCLUSIONS Implant success beyond the human element of the practicioner and the protocol element of implant treatment, also relies on the application of the right type of implant, at the right implant site, in accordance with oral and individual health status of the patient. Implant success does not depend on type of "coating" material of the implants. Based at this physiological process, the success or implant failure is not a process depending on the type of selected implant, because types of synthetic or natural materials that promote osteointegration are relatively in large number.
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Affiliation(s)
- Ilma Robo
- Faculty of Dental Medicine, University of Medicine, Tiranë, Albania
| | - Saimir Heta
- Pediatric Surgery, Pediatric Surgeon, University Hospital, QSUT, Tiranë, Albania
| | | | - Vera Ostreni
- Pediatric Surgery, Pediatric Surgeon, University Hospital, QSUT, Tiranë, Albania
- Department of Morphology, University of Medicine, Tiranë, Albania
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Bretschneider H, Mettelsiefen J, Rentsch C, Gelinsky M, Link HD, Günther K, Lode A, Hofbauer C. Evaluation of topographical and chemical modified TiAl6V4 implant surfaces in a weight‐bearing intramedullary femur model in rabbit. J Biomed Mater Res B Appl Biomater 2019; 108:1117-1128. [DOI: 10.1002/jbm.b.34463] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 07/04/2019] [Accepted: 07/24/2019] [Indexed: 01/04/2023]
Affiliation(s)
- Henriette Bretschneider
- University Centre for Orthopaedics and Trauma SurgeryUniversity Hospital Carl Gustav Carus Dresden Dresden Germany
- Centre for Translational Bone, Joint and Soft Tissue ResearchUniversity Hospital Carl Gustav Carus and Faculty of Medicine of Technische Universität Dresden Dresden Germany
| | - Jan Mettelsiefen
- University Centre for Orthopaedics and Trauma SurgeryUniversity Hospital Carl Gustav Carus Dresden Dresden Germany
| | - Claudia Rentsch
- University Centre for Orthopaedics and Trauma SurgeryUniversity Hospital Carl Gustav Carus Dresden Dresden Germany
- Centre for Translational Bone, Joint and Soft Tissue ResearchUniversity Hospital Carl Gustav Carus and Faculty of Medicine of Technische Universität Dresden Dresden Germany
| | - Michael Gelinsky
- Centre for Translational Bone, Joint and Soft Tissue ResearchUniversity Hospital Carl Gustav Carus and Faculty of Medicine of Technische Universität Dresden Dresden Germany
| | | | - Klaus‐Peter Günther
- University Centre for Orthopaedics and Trauma SurgeryUniversity Hospital Carl Gustav Carus Dresden Dresden Germany
| | - Anja Lode
- Centre for Translational Bone, Joint and Soft Tissue ResearchUniversity Hospital Carl Gustav Carus and Faculty of Medicine of Technische Universität Dresden Dresden Germany
| | - Christine Hofbauer
- University Centre for Orthopaedics and Trauma SurgeryUniversity Hospital Carl Gustav Carus Dresden Dresden Germany
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A R, Mitun D, Balla VK, Dwaipayan S, D D, Manivasagam G. Surface properties and cytocompatibility of Ti-6Al-4V fabricated using Laser Engineered Net Shaping. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 100:104-116. [PMID: 30948044 DOI: 10.1016/j.msec.2019.02.099] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Revised: 12/15/2018] [Accepted: 02/25/2019] [Indexed: 10/27/2022]
Abstract
Direct laser deposition (DLD) is one of the rapidly emerging laser-based additive manufacturing (LBAM) process. Laser Engineered Net Shaping (LENS) is one such DLD technique which was employed to fabricate one of the widely used Ti-6Al-4V implant material with enhanced surface-related properties compared to the wrought sample (commercially available). Wear and corrosion behavior of LENS fabricated Ti-6Al-4V (L-Ti64) was characterized using low-frequency reciprocatory wear tester and potentiostat. Sample hardness was determined using Vickers's microhardness test. Adhesion and morphology of Human mesenchymal stem cells (hMSCs) on the samples were examined using Scanning Electron Microscopy (SEM) and fluorescence microscope whereas the quantification of live cells was determined using MTT (3-(4,5-Dimethylthiazol-2-yl)-2,5-Diphenyltetrazolium Bromide) assay. Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES) was used to determine the concentration of leached-out metal ions during wear test. All the above mentioned surface-related properties were compared to that of wrought Ti-6Al-4V (W-Ti64) to standardize the efficiency of LENS-fabricated materials (L-Ti64) when compared to its wrought counterpart. The results clearly indicated stable passive behavior of L-Ti64, which was evident from the lower corrosion rate and high passive range obtained. L-Ti64 exhibited improved hardness level than W-Ti64 by 8% which enhanced the wear resistance and also prevented the release of wear debris. However, in presence of FBS, coefficient of friction (COF) increased by about 21 and 33% for L-Ti64 and W-Ti64 respectively, which inturn accelerated the wear rate of both the samples. Low cytotoxicity and well spread morphology of human Mesenchymal Stem Cells (hMSC's) affirmed higher level of biocompatibility of both the samples. However, no significant differences in the cellular behaviors were observed.
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Affiliation(s)
- Revathi A
- School of Biosciences and Technology (SBST), VIT University, Vellore, TN, India
| | - Das Mitun
- CSIR-Central Glass and Research Institute, Kolkata 700 032, WB, India; School of Mechanical Engineering (SMEC), VIT University, Vellore, TN, India
| | - Vamsi K Balla
- CSIR-Central Glass and Research Institute, Kolkata 700 032, WB, India; School of Mechanical Engineering (SMEC), VIT University, Vellore, TN, India
| | - Sen Dwaipayan
- Centre for Biomaterials, Cellular and Molecular Theranostics (CBCMT), VIT University, Vellore 632 014, TN, India
| | - Devika D
- Department of Mechanical Engineering, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences (SIMATS), Thandalam, Chennai 600 077, TN, India
| | - Geetha Manivasagam
- Centre for Biomaterials, Cellular and Molecular Theranostics (CBCMT), VIT University, Vellore 632 014, TN, India.
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Höner M, Lauria I, Dabhi C, Kant S, Leube RE, Fischer H. Periodic microstructures on bioactive glass surfaces enhance osteogenic differentiation of human mesenchymal stromal cells and promote osteoclastogenesis in vitro. J Biomed Mater Res A 2018; 106:1965-1978. [PMID: 29569421 DOI: 10.1002/jbm.a.36399] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2017] [Revised: 02/19/2018] [Accepted: 03/15/2018] [Indexed: 11/06/2022]
Abstract
Bioactive glasses (BG) are known for their ability to bond to hard and soft tissues. We hypothesized that the stimulation of bone remodeling, including cellular bone forming and bone resorbing processes, can be increased by applying periodic microstructures on the glass surfaces in vitro. To test our hypothesis, two different BG (45S5 and 13-93) were microstructured in a groove-and-ridge pattern of different sizes by a novel casting process and tested in cell culture experiments using human mesenchymal stromal cells (hMSCs) and RAW 264.7 cells. The microstructures induced contact guidance of hMSCs and increased osteogenic marker gene expression of the stem cells, compared to non-structured glass surfaces as verified by ELISA and quantitative real-time PCR (qPCR) analyses. Furthermore, the structures stimulated the differentiation of RAW cells to osteoclast-like cells confirmed by TRAP gene expression and their resorption activity causing visible resorption lacunae. Our results demonstrate that periodically microstructured BG (especially 45S5) might improve the osteogenic differentiation of hMSCs and influence the activity of material resorbing cells in vitro. Hence, microstructuring of BG could enhance the remodeling process of bone substitutes critical for the formation of new bone tissue in vivo and thus be used to trigger bone remodeling kinetics in vivo. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 106A: 1965-1978, 2018.
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Affiliation(s)
- Miriam Höner
- Department of Dental Materials and Biomaterials Research, RWTH Aachen University Hospital, Pauwelsstraße 30, Aachen, 52074, Germany
| | - Ines Lauria
- Department of Dental Materials and Biomaterials Research, RWTH Aachen University Hospital, Pauwelsstraße 30, Aachen, 52074, Germany
| | - Christina Dabhi
- Department of Dental Materials and Biomaterials Research, RWTH Aachen University Hospital, Pauwelsstraße 30, Aachen, 52074, Germany
| | - Sebastian Kant
- Institute of Molecular and Cellular Anatomy, RWTH Aachen University, Wendlingweg 2, Aachen, 52074, Germany
| | - Rudolf E Leube
- Institute of Molecular and Cellular Anatomy, RWTH Aachen University, Wendlingweg 2, Aachen, 52074, Germany
| | - Horst Fischer
- Department of Dental Materials and Biomaterials Research, RWTH Aachen University Hospital, Pauwelsstraße 30, Aachen, 52074, Germany
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