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Nitti P, Narayanan A, Pellegrino R, Villani S, Madaghiele M, Demitri C. Cell-Tissue Interaction: The Biomimetic Approach to Design Tissue Engineered Biomaterials. Bioengineering (Basel) 2023; 10:1122. [PMID: 37892852 PMCID: PMC10604880 DOI: 10.3390/bioengineering10101122] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 09/14/2023] [Accepted: 09/21/2023] [Indexed: 10/29/2023] Open
Abstract
The advancement achieved in Tissue Engineering is based on a careful and in-depth study of cell-tissue interactions. The choice of a specific biomaterial in Tissue Engineering is fundamental, as it represents an interface for adherent cells in the creation of a microenvironment suitable for cell growth and differentiation. The knowledge of the biochemical and biophysical properties of the extracellular matrix is a useful tool for the optimization of polymeric scaffolds. This review aims to analyse the chemical, physical, and biological parameters on which are possible to act in Tissue Engineering for the optimization of polymeric scaffolds and the most recent progress presented in this field, including the novelty in the modification of the scaffolds' bulk and surface from a chemical and physical point of view to improve cell-biomaterial interaction. Moreover, we underline how understanding the impact of scaffolds on cell fate is of paramount importance for the successful advancement of Tissue Engineering. Finally, we conclude by reporting the future perspectives in this field in continuous development.
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Affiliation(s)
- Paola Nitti
- Department of Engineering for Innovation, University of Salento, 73100 Lecce, Italy; (A.N.); (R.P.); (S.V.); (M.M.); (C.D.)
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2
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Replica-mold nanopatterned PHEMA hydrogel surfaces for ophthalmic applications. Sci Rep 2022; 12:14497. [PMID: 36008433 PMCID: PMC9411613 DOI: 10.1038/s41598-022-18564-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Accepted: 08/16/2022] [Indexed: 11/10/2022] Open
Abstract
Biomimicking native tissues and organs require the development of advanced hydrogels. The patterning of hydrogel surfaces may enhance the cellular functionality and therapeutic efficacy of implants. For example, nanopatterning of the intraocular lens (IOL) surface can suppress the upregulation of cytoskeleton proteins (actin and actinin) within the cells in contact with the IOL surface and, hence, prevent secondary cataracts causing blurry or opaque vision. Here we introduce a fast and efficient method for fabricating arrays consisting of millions of individual nanostructures on the hydrogel surface. In particular, we have prepared the randomly distributed nanopillars on poly(2-hydroxyethyl methacrylate) hydrogel using replica molding and show that the number, shape, and arrangement of nanostructures are fully adjustable. Characterization by atomic force microscopy revealed that all nanopillars were of similar shape, narrow size distribution, and without significant defects. In imprint lithography, choosing the appropriate hydrogel composition is critical. As hydrogels with imprinted nanostructures mimic the natural cell environment, they can find applications in fundamental cell biology research, e.g., they can tune cell attachment and inhibit or promote cell clustering by a specific arrangement of protrusive nanostructures on the hydrogel surface.
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Azizipour N, Avazpour R, Sawan M, Ajji A, H. Rosenzweig D. Surface Optimization and Design Adaptation toward Spheroid Formation On-Chip. SENSORS (BASEL, SWITZERLAND) 2022; 22:3191. [PMID: 35590879 PMCID: PMC9104470 DOI: 10.3390/s22093191] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 04/07/2022] [Accepted: 04/19/2022] [Indexed: 12/17/2022]
Abstract
Spheroids have become an essential tool in preclinical cancer research. The uniformity of spheroids is a critical parameter in drug test results. Spheroids form by self-assembly of cells. Hence, the control of homogeneity of spheroids in terms of size, shape, and density is challenging. We developed surface-optimized polydimethylsiloxane (PDMS) biochip platforms for uniform spheroid formation on-chip. These biochips were surface modified with 10% bovine serum albumin (BSA) to effectively suppress cell adhesion on the PDMS surface. These surface-optimized platforms facilitate cell self-aggregations to produce homogenous non-scaffold-based spheroids. We produced uniform spheroids on these biochips using six different established human cell lines and a co-culture model. Here, we observe that the concentration of the BSA is important in blocking cell adhesion to the PDMS surfaces. Biochips treated with 3% BSA demonstrated cell repellent properties similar to the bare PDMS surfaces. This work highlights the importance of surface modification on spheroid production on PDMS-based microfluidic devices.
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Affiliation(s)
- Neda Azizipour
- Institut de Génie Biomédical, Polytechnique Montréal, Montréal, QC H3C 3A7, Canada; (N.A.); (M.S.)
| | - Rahi Avazpour
- Department of Chemical Engineering, Polytechnique Montréal, Montréal, QC H3C 3A7, Canada;
| | - Mohamad Sawan
- Institut de Génie Biomédical, Polytechnique Montréal, Montréal, QC H3C 3A7, Canada; (N.A.); (M.S.)
- Polystim Neurotech Laboratory, Electrical Engineering Department, Polytechnique Montréal, Montréal, QC H3T 1J4, Canada
- CenBRAIN Laboratory, Westlake Institute for Advanced Study, School of Engineering, Westlake University, Hangzhou 310024, China
| | - Abdellah Ajji
- Institut de Génie Biomédical, Polytechnique Montréal, Montréal, QC H3C 3A7, Canada; (N.A.); (M.S.)
- The Research Center for High Performance Polymer and Composite Systems, Chemical Engineering Department, Polytechnique Montréal, Montréal, QC H3C 3A7, Canada
| | - Derek H. Rosenzweig
- Department of Surgery, McGill University, Montréal, QC H3G 1A4, Canada
- Injury, Repair and Recovery Program, Research Institute of McGill University Health Centre, Montréal, QC H3H 2R9, Canada
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4
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Zhang D, Li Z, Shi H, Yao Y, Du W, Lu P, Liang K, Hong L, Gao C. Micropatterns and peptide gradient on the inner surface of a guidance conduit synergistically promotes nerve regeneration in vivo. Bioact Mater 2022; 9:134-146. [PMID: 34820561 PMCID: PMC8586031 DOI: 10.1016/j.bioactmat.2021.07.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Revised: 07/09/2021] [Accepted: 07/10/2021] [Indexed: 12/22/2022] Open
Abstract
Both of the surface topographical features and distribution of biochemical cues can influence the cell-substrate interactions and thereby tissue regeneration in vivo. However, they have not been combined simultaneously onto a biodegradable scaffold to demonstrate the synergistic role so far. In this study, a proof-of-concept study is performed to prepare micropatterns and peptide gradient on the inner wall of a poly (D,L-lactide-co-caprolactone) (PLCL) guidance conduit and its advantages in regeneration of peripheral nerve in vivo. After linear ridges/grooves of 20/40 μm in width are created on the PLCL film, its surface is aminolyzed in a kinetically controlled manner to obtain the continuous gradient of amino groups, which are then transferred to CQAASIKVAV peptide density gradient via covalent coupling of glutaraldehyde. The Schwann cells are better aligned along with the stripes, and show a faster migration rate toward the region of higher peptide density. Implantation of the nerve guidance conduit made of the PLCL film having both the micropatterns and peptide gradient can significantly accelerate the regeneration of sciatic nerve in terms of rate, function recovery and microstructures, and reduction of fibrosis in muscle tissues. Moreover, this nerve conduit can also benefit the M2 polarization of macrophages and promote vascularization in vivo.
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Affiliation(s)
- Deteng Zhang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cell and Regenerative Medicine, Zhejiang University, Hangzhou, 310058, China
| | - Ziming Li
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Haifei Shi
- Department of Hand Surgery, First Affiliated Hospital of Zhejiang University, School of Medicine. Hangzhou, 310009, China
| | - Yuejun Yao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Wang Du
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Pan Lu
- Department of Hand Surgery, First Affiliated Hospital of Zhejiang University, School of Medicine. Hangzhou, 310009, China
| | - Kejiong Liang
- Department of Hand Surgery, First Affiliated Hospital of Zhejiang University, School of Medicine. Hangzhou, 310009, China
| | - Liangjie Hong
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Changyou Gao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cell and Regenerative Medicine, Zhejiang University, Hangzhou, 310058, China
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5
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Slay EE, Meldrum FC, Pensabene V, Amer MH. Embracing Mechanobiology in Next Generation Organ-On-A-Chip Models of Bone Metastasis. FRONTIERS IN MEDICAL TECHNOLOGY 2021; 3:722501. [PMID: 35047952 PMCID: PMC8757701 DOI: 10.3389/fmedt.2021.722501] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Accepted: 08/09/2021] [Indexed: 12/31/2022] Open
Abstract
Bone metastasis in breast cancer is associated with high mortality. Biomechanical cues presented by the extracellular matrix play a vital role in driving cancer metastasis. The lack of in vitro models that recapitulate the mechanical aspects of the in vivo microenvironment hinders the development of novel targeted therapies. Organ-on-a-chip (OOAC) platforms have recently emerged as a new generation of in vitro models that can mimic cell-cell interactions, enable control over fluid flow and allow the introduction of mechanical cues. Biomaterials used within OOAC platforms can determine the physical microenvironment that cells reside in and affect their behavior, adhesion, and localization. Refining the design of OOAC platforms to recreate microenvironmental regulation of metastasis and probe cell-matrix interactions will advance our understanding of breast cancer metastasis and support the development of next-generation metastasis-on-a-chip platforms. In this mini-review, we discuss the role of mechanobiology on the behavior of breast cancer and bone-residing cells, summarize the current capabilities of OOAC platforms for modeling breast cancer metastasis to bone, and highlight design opportunities offered by the incorporation of mechanobiological cues in these platforms.
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Affiliation(s)
- Ellen E. Slay
- School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, United Kingdom
| | | | - Virginia Pensabene
- School of School of Electronic and Electrical Engineering, University of Leeds, Leeds, United Kingdom
- School of Medicine, Leeds Institute of Medical Research, University of Leeds, Leeds, United Kingdom
| | - Mahetab H. Amer
- School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, United Kingdom
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6
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Dias CS, Custódio CA, Antunes GC, Telo da Gama MM, Mano JF, Araújo NAM. Modeling of Cell-Mediated Self-Assembled Colloidal Scaffolds. ACS APPLIED MATERIALS & INTERFACES 2020; 12:48321-48328. [PMID: 33064437 DOI: 10.1021/acsami.0c13457] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A critical step in tissue engineering is the design and synthesis of 3D biocompatible matrices (scaffolds) to support and guide the proliferation of cells and tissue growth. The most existing techniques rely on the processing of scaffolds under controlled conditions and then implanting them in vivo, with questions related to biocompatibility and implantation that are still challenging. As an alternative, it was proposed to assemble the scaffolds in loco through the self-organization of colloidal particles mediated by cells. To overcome the difficulty to test experimentally all the relevant parameters, we propose the use of large-scale numerical simulation as a tool to reach useful predictive information and to interpret experimental results. Thus, in this study, we combine experiments, particle-based simulations, and mean-field calculations to show that, in general, the size of the self-assembled scaffold scales with the cell-to-particle ratio. However, we have found an optimal value of this ratio, for which the size of the scaffold is maximal when the cell-cell adhesion is suppressed. These results suggest that the size and structure of the self-assembled scaffolds may be designed by tuning the adhesion between cells in the colloidal suspension.
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Affiliation(s)
- C S Dias
- Departamento de Fı́sica, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal
- Centro de Fı́sica Teórica e Computacional, Universidade de Lisboa, 1749-016 Lisboa, Portugal
| | - C A Custódio
- Department of Chemistry, CICECO, Campus Universitário de Santiago, University of Aveiro, 3810-193 Aveiro, Portugal
| | - G C Antunes
- Departamento de Fı́sica, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal
- Centro de Fı́sica Teórica e Computacional, Universidade de Lisboa, 1749-016 Lisboa, Portugal
| | - M M Telo da Gama
- Departamento de Fı́sica, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal
- Centro de Fı́sica Teórica e Computacional, Universidade de Lisboa, 1749-016 Lisboa, Portugal
| | - J F Mano
- Department of Chemistry, CICECO, Campus Universitário de Santiago, University of Aveiro, 3810-193 Aveiro, Portugal
| | - N A M Araújo
- Departamento de Fı́sica, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal
- Centro de Fı́sica Teórica e Computacional, Universidade de Lisboa, 1749-016 Lisboa, Portugal
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7
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Karimi F, Thombare VJ, Hutton CA, O'Connor AJ, Qiao GG, Heath DE. Biomaterials functionalized with nanoclusters of integrin- and syndecan-binding ligands improve cell adhesion and mechanosensing under shear flow conditions. J Biomed Mater Res A 2020; 109:313-325. [PMID: 32490581 DOI: 10.1002/jbm.a.37024] [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] [Received: 10/04/2019] [Revised: 04/20/2020] [Accepted: 04/27/2020] [Indexed: 12/11/2022]
Abstract
We have engineered biomaterials that display nanoclusters of ligands that bind both integrin and syndecan-4 cell receptors. These surfaces regulate cell behaviors under static conditions including adhesion, spreading, actin stress fiber formation, and migration. The syndecan-4 receptors are also critical mediators of cellular mechanotransduction. In this contribution we assess whether this novel class of materials can regulate the response of cells to applied mechanical stimulation, using the shear stress imparted by laminar fluid flow as a model stimulus. Specifically, we assess endothelial cell detachment due to flow, cell alignment due to flow, and cell adhesion from the flowing fluid. A high degree of cell retention was observed on surfaces containing integrin-binding ligands or a mixed population of integrin- and syndecan-binding ligands. However, the presence of both ligand types was necessary for the cells to align in the direction of flow. These results imply that integrin engagement is necessary for adhesion strength, but engagement of both receptor types aids in appropriate mechanotransduction. Additionally, it was found that surfaces functionalized with both ligand types were able to scavenge a larger number of cells from flow, and to do so at a faster rate, compared to surfaces functionalized with only integrin- or syndecan-binding ligands. These results show that interfaces functionalized with both integrin- and syndecan-binding ligands regulate a significant range of biophysical cell behaviors in response to shear stress.
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Affiliation(s)
- Fatemeh Karimi
- Department of Biomedical Engineering, Particulate Fluids Processing Centre, University of Melbourne, Parkville, Victoria, Australia.,Polymer Science Group, Department of Chemical Engineering, Particulate Fluid Processing Centre, University of Melbourne, Parkville, Victoria, Australia.,Graduate School of Biomedical Engineering, University of New South Wales, Sydney, Australia
| | - Varsha Jagannath Thombare
- School of Chemistry and Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Victoria, Australia
| | - Craig A Hutton
- School of Chemistry and Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Victoria, Australia
| | - Andrea J O'Connor
- Department of Biomedical Engineering, Particulate Fluids Processing Centre, University of Melbourne, Parkville, Victoria, Australia
| | - Greg G Qiao
- Polymer Science Group, Department of Chemical Engineering, Particulate Fluid Processing Centre, University of Melbourne, Parkville, Victoria, Australia
| | - Daniel E Heath
- Department of Biomedical Engineering, Particulate Fluids Processing Centre, University of Melbourne, Parkville, Victoria, Australia
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8
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Macdougall LJ, Anseth K. Bioerodible Hydrogels Based on Photopolymerized Poly(ethylene glycol)-co-poly(α-hydroxy acid) Diacrylate Macromers. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00030] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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9
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Beyond RGD; nanoclusters of syndecan- and integrin-binding ligands synergistically enhance cell/material interactions. Biomaterials 2018; 187:81-92. [DOI: 10.1016/j.biomaterials.2018.10.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2018] [Revised: 09/19/2018] [Accepted: 10/02/2018] [Indexed: 12/22/2022]
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10
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Karimi F, O'Connor AJ, Qiao GG, Heath DE. Integrin Clustering Matters: A Review of Biomaterials Functionalized with Multivalent Integrin-Binding Ligands to Improve Cell Adhesion, Migration, Differentiation, Angiogenesis, and Biomedical Device Integration. Adv Healthc Mater 2018; 7:e1701324. [PMID: 29577678 DOI: 10.1002/adhm.201701324] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Revised: 01/24/2018] [Indexed: 01/17/2023]
Abstract
Material systems that exhibit tailored interactions with cells are a cornerstone of biomaterial and tissue engineering technologies. One method of achieving these tailored interactions is to biofunctionalize materials with peptide ligands that bind integrin receptors present on the cell surface. However, cell biology research has illustrated that both integrin binding and integrin clustering are required to achieve a full adhesion response. This biophysical knowledge has motivated researchers to develop material systems biofunctionalized with nanoscale clusters of ligands that promote both integrin occupancy and clustering of the receptors. These materials have improved a wide variety of biological interactions in vitro including cell adhesion, proliferation, migration speed, gene expression, and stem cell differentiation; and improved in vivo outcomes including increased angiogenesis, tissue healing, and biomedical device integration. This review first introduces the techniques that enable the fabrication of these nanopatterned materials, describes the improved biological effects that have been achieved, and lastly discusses the current limitations of the technology and where future advances may occur. Although this technology is still in its nascency, it will undoubtedly play an important role in the future development of biomaterials and tissue engineering scaffolds for both in vitro and in vivo applications.
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Affiliation(s)
- Fatemeh Karimi
- School of Chemical and Biomedical Engineering; Particulate Fluids Processing Centre; University of Melbourne; Parkville VIC 3010 Australia
- Polymer Science Group; Department of Chemical Engineering; Particulate Fluid Processing Centre; University of Melbourne; Parkville VIC 3010 Australia
| | - Andrea J. O'Connor
- School of Chemical and Biomedical Engineering; Particulate Fluids Processing Centre; University of Melbourne; Parkville VIC 3010 Australia
| | - Greg G. Qiao
- Polymer Science Group; Department of Chemical Engineering; Particulate Fluid Processing Centre; University of Melbourne; Parkville VIC 3010 Australia
| | - Daniel E. Heath
- School of Chemical and Biomedical Engineering; Particulate Fluids Processing Centre; University of Melbourne; Parkville VIC 3010 Australia
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11
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Abdal Dayem A, Lee S, Y. Choi H, Cho SG. The Impact of Adhesion Molecules on the In Vitro Culture and Differentiation of Stem Cells. Biotechnol J 2018; 13:1700575. [DOI: 10.1002/biot.201700575] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023]
Affiliation(s)
- Ahmed Abdal Dayem
- Department of Stem Cell and Regenerative Biotechnology; Incurable Disease Animal Model and Stem Cell Institute (IDASI); Konkuk University; 120 Neungdong-ro Gwangjin-gu 05029 Seoul Republic of Korea
| | - Soobin Lee
- Department of Stem Cell and Regenerative Biotechnology; Incurable Disease Animal Model and Stem Cell Institute (IDASI); Konkuk University; 120 Neungdong-ro Gwangjin-gu 05029 Seoul Republic of Korea
| | - Hye Y. Choi
- Department of Stem Cell and Regenerative Biotechnology; Incurable Disease Animal Model and Stem Cell Institute (IDASI); Konkuk University; 120 Neungdong-ro Gwangjin-gu 05029 Seoul Republic of Korea
| | - Ssang-Goo Cho
- Department of Stem Cell and Regenerative Biotechnology; Incurable Disease Animal Model and Stem Cell Institute (IDASI); Konkuk University; 120 Neungdong-ro Gwangjin-gu 05029 Seoul Republic of Korea
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12
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Heath DE, Cooper SL. The development of polymeric biomaterials inspired by the extracellular matrix. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2017; 28:1051-1069. [DOI: 10.1080/09205063.2017.1297285] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Daniel E. Heath
- Department of Chemical and Biomolecular Engineering, Particulate Fluids Processing Centre, The University of Melbourne, Parkville, Australia
| | - Stuart L. Cooper
- Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH, USA
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13
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Hadjicharalambous C, Prymak O, Loza K, Buyakov A, Kulkov S, Chatzinikolaidou M. Effect of Porosity of Alumina and Zirconia Ceramics toward Pre-Osteoblast Response. Front Bioeng Biotechnol 2015; 3:175. [PMID: 26579516 PMCID: PMC4623495 DOI: 10.3389/fbioe.2015.00175] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Accepted: 10/13/2015] [Indexed: 11/17/2022] Open
Abstract
It is acknowledged that cellular responses are highly affected by biomaterial porosity. The investigation of this effect is important for the development of implanted biomaterials that integrate with bone tissue. Zirconia and alumina ceramics exhibit outstanding mechanical properties and are among the most popular implant materials used in orthopedics, but few data exist regarding the effect of porosity on cellular responses to these materials. The present study investigates the effect of porosity on the attachment and proliferation of pre-osteoblastic cells on zirconia and alumina. For each composition, ceramics of three different porosities are fabricated by sintering, and characterized using scanning electron microscopy, energy dispersive X-ray spectroscopy and X-ray powder diffraction. Cell proliferation is quantified, and microscopy is employed to qualitatively support the proliferation results and evaluate cell morphology. Cell adhesion and metabolic activity are found comparable among low porosity zirconia and alumina. In contrast, higher porosity favors better cell spreading on zirconia and improves growth, but does not significantly affect cell response on alumina. Between the highest porosity materials, cell response on zirconia is found superior to alumina. Results show that an average pore size of ~150 μm and ~50% porosity can be considered beneficial to cellular growth on zirconia ceramics.
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Affiliation(s)
| | - Oleg Prymak
- Inorganic Chemistry, Center for Nanointegration Duisburg-Essen (CeNIDE), University of Duisburg-Essen, Essen, Germany
| | - Kateryna Loza
- Inorganic Chemistry, Center for Nanointegration Duisburg-Essen (CeNIDE), University of Duisburg-Essen, Essen, Germany
| | - Ales Buyakov
- Tomsk State University and ISPMS RAS, Tomsk, Russia
| | | | - Maria Chatzinikolaidou
- Department of Materials Science and Technology, University of Crete, Heraklion, Greece
- IESL-FORTH, Heraklion, Greece
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14
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Hadjicharalambous C, Buyakov A, Buyakova S, Kulkov S, Chatzinikolaidou M. Porous alumina, zirconia and alumina/zirconia for bone repair: fabrication, mechanical and
in vitro
biological response. Biomed Mater 2015; 10:025012. [DOI: 10.1088/1748-6041/10/2/025012] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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15
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Weber LM, Hayda KN, Anseth KS. Cell-matrix interactions improve beta-cell survival and insulin secretion in three-dimensional culture. Tissue Eng Part A 2009; 14:1959-68. [PMID: 18724831 DOI: 10.1089/ten.tea.2007.0238] [Citation(s) in RCA: 164] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Controlled matrix interactions were presented to pancreatic beta-cells in three-dimensional culture within poly(ethylene glycol) hydrogels. Dispersed MIN6 beta-cells were encapsulated in gel environments containing the following entrapped extracellular matrix (ECM) proteins: collagen type I, collagen type IV, fibrinogen, fibronectin, laminin, and vitronectin. In ECM-containing gels, beta-cell survival was significantly better than in gels without ECM over 10 days. Correspondingly, apoptosis in encapsulated beta-cells was less in the presence of each matrix protein, suggesting the ability of individual matrix interactions to prevent matrix signaling-related apoptosis (anoikis). MIN6 beta-cells cultured in gels containing collagen type IV or laminin secreted more insulin in response to glucose stimulation than beta-cells in all other experimental conditions. Variations in collagen type IV or laminin concentration between 10 microg/mL and 250 microg/mL did not affect insulin secretion. Finally, beta-cell function in hydrogels presenting both collagen type IV and laminin revealed synergistic interactions. With a total protein concentration of 100 microg/mL, three gel compositions of varying ratios of collagen type IV to laminin (25:75, 50:50, and 75:25) were tested. In the presence of 25 microg/mL of collagen type IV and 75 microg/mL of laminin, beta-cell insulin secretion was greater than with laminin or collagen type IV individually. These results demonstrate that specific, rationally designed extracellular environments promote isolated beta-cell survival and function.
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Affiliation(s)
- Laney M Weber
- Department of Chemical and Biological Engineering, University of Colorado, Boulder, Colorado 80309, USA
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