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Asadian M, Tomasina C, Onyshchenko Y, Chan KV, Norouzi M, Zonderland J, Camarero-Espinosa S, Morent R, De Geyter N, Moroni L. The role of plasma-induced surface chemistry on polycaprolactone nanofibers to direct chondrogenic differentiation of human mesenchymal stem cells. J Biomed Mater Res A 2024; 112:210-230. [PMID: 37706337 DOI: 10.1002/jbm.a.37607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 08/12/2023] [Accepted: 08/24/2023] [Indexed: 09/15/2023]
Abstract
Bone marrow-derived mesenchymal stromal cells (BMSCs) are extensively being utilized for cartilage regeneration owing to their excellent differentiation potential and availability. However, controlled differentiation of BMSCs towards cartilaginous phenotypes to heal full-thickness cartilage defects remains challenging. This study investigates how different surface properties induced by either coating deposition or biomolecules immobilization onto nanofibers (NFs) could affect BMSCs chondro-inductive behavior. Accordingly, electrospun poly(ε-caprolactone) (PCL) NFs were exposed to two surface modification strategies based on medium-pressure plasma technology. The first strategy is plasma polymerization, in which cyclopropylamine (CPA) or acrylic acid (AcAc) monomers were plasma polymerized to obtain amine- or carboxylic acid-rich NFs, respectively. The second strategy uses a combination of CPA plasma polymerization and a post-chemical technique to immobilize chondroitin sulfate (CS) onto the NFs. These modifications could affect surface roughness, hydrophilicity, and chemical composition while preserving the NFs' nano-morphology. The results of long-term BMSCs culture in both basic and chondrogenic media proved that the surface modifications modulated BMSCs chondrogenic differentiation. Indeed, the incorporation of polar groups by different modification strategies had a positive impact on the cell proliferation rate, production of the glycosaminoglycan matrix, and expression of extracellular matrix proteins (collagen I and collagen II). The chondro-inductive behavior of the samples was highly dependent on the nature of the introduced polar functional groups. Among all samples, carboxylic acid-rich NFs promoted chondrogenesis by higher expression of aggrecan, Sox9, and collagen II with downregulation of hypertrophic markers. Hence, this approach showed an intrinsic potential to have a non-hypertrophic chondrogenic cell phenotype.
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Affiliation(s)
- Mahtab Asadian
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Ghent University, Ghent, Belgium
- Prometheus Division of Skeletal Tissue Engineering, Department of Materials Science, KU Leuven University, Leuven, Belgium
| | - Clarissa Tomasina
- MERLN Institute for Technology-Inspired Regenerative Medicine, Complex Tissue Regeneration Department, Maastricht University, Maastricht, The Netherlands
| | - Yuliia Onyshchenko
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Ghent University, Ghent, Belgium
| | - Ke Vin Chan
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Ghent University, Ghent, Belgium
| | - Mohammad Norouzi
- Department of Pharmacology, University of Montreal, Montreal, Québec, Canada
| | - Jip Zonderland
- MERLN Institute for Technology-Inspired Regenerative Medicine, Complex Tissue Regeneration Department, Maastricht University, Maastricht, The Netherlands
| | - Sandra Camarero-Espinosa
- MERLN Institute for Technology-Inspired Regenerative Medicine, Complex Tissue Regeneration Department, Maastricht University, Maastricht, The Netherlands
- POLYMAT University of the Basque Country UPV/EHU Avenida Tolosa 72, Donostia/San Sebastián, Spain
- IKERBASQUE, Basque Foundation for Science, Euskadi Pl. 5, Bilbao, Spain
| | - Rino Morent
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Ghent University, Ghent, Belgium
| | - Nathalie De Geyter
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Ghent University, Ghent, Belgium
| | - Lorenzo Moroni
- MERLN Institute for Technology-Inspired Regenerative Medicine, Complex Tissue Regeneration Department, Maastricht University, Maastricht, The Netherlands
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Su T, Xu M, Lu F, Chang Q. Adipogenesis or osteogenesis: destiny decision made by mechanical properties of biomaterials. RSC Adv 2022; 12:24501-24510. [PMID: 36128379 PMCID: PMC9425444 DOI: 10.1039/d2ra02841g] [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: 05/05/2022] [Accepted: 07/24/2022] [Indexed: 11/21/2022] Open
Abstract
Regenerative medicine affords an effective approach for restoring defect-associated diseases, and biomaterials play a pivotal role as cell niches to support the cell behavior and decide the destiny of cell differentiation. Except for chemical inducers, mechanical properties such as stiffness, pore size and topography of biomaterials play a crucial role in the regulation of cell behaviors and functions. Stiffness may determine the adipogenesis or osteogenesis of mesenchymal stem cells (MSCs) via the translocation of yes-associated protein (YAP) and the transcriptional coactivator with a PDZ-binding motif (TAZ). External forces transmit through cytoskeleton reorientation to assist nuclear deformation and molecule transport, meanwhile, signal pathways including the Hippo, FAK/RhoA/ROCK, and Wnt/β-catenin have been evidenced to participate in the mechanotransduction. Different pore sizes not only tailor the scaffold stiffness but also conform to the requirements of cell migration and vessels in-growth. Topography guides cell geometry along with mobility and determines the cell fate ascribed to micro/nano-scale contact. Herein, we highlight the recent progress in exploring the regulation mechanism by the physical properties of biomaterials, which might lead to more innovative regenerative strategies for adipose or bone tissue repair. Regenerative medicine affords an effective approach for restoring defect-associated diseases, and biomaterials play a pivotal role as cell niches to support the cell behavior and decide the destiny of cell differentiation.![]()
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Affiliation(s)
- Ting Su
- Department of Plastic and Cosmetic Surgery, Nanfang Hospital, Southern Medical University, 510515, China
| | - Mimi Xu
- Department of Plastic and Cosmetic Surgery, Nanfang Hospital, Southern Medical University, 510515, China
| | - Feng Lu
- Department of Plastic and Cosmetic Surgery, Nanfang Hospital, Southern Medical University, 510515, China
| | - Qiang Chang
- Department of Plastic and Cosmetic Surgery, Nanfang Hospital, Southern Medical University, 510515, China
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Conductive Bioimprint Using Soft Lithography Technique Based on PEDOT:PSS for Biosensing. Bioengineering (Basel) 2021; 8:bioengineering8120204. [PMID: 34940357 PMCID: PMC8699003 DOI: 10.3390/bioengineering8120204] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 12/01/2021] [Accepted: 12/03/2021] [Indexed: 11/17/2022] Open
Abstract
Culture platform surface topography plays an important role in the regulation of biological cell behaviour. Understanding the mechanisms behind the roles of surface topography in cell response are central to many developments in a Lab on a Chip, medical implants and biosensors. In this work, we report on a novel development of a biocompatible conductive hydrogel (CH) made of poly (3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) and gelatin with bioimprinted surface features. The bioimprinted CH offers high conductivity, biocompatibility and high replication fidelity suitable for cell culture applications. The bioimprinted conductive hydrogel is developed to investigate biological cells’ response to their morphological footprint and study their growth, adhesion, cell–cell interactions and proliferation as a function of conductivity. Moreover, optimization of the conductive hydrogel mixture plays an important role in achieving high imprinting resolution and conductivity. The reason behind choosing a conducive hydrogel with high resolution surface bioimprints is to improve cell monitoring while mimicking cells’ natural physical environment. Bioimprints which are a 3D replication of cellular morphology have previously been shown to promote cell attachment, proliferation, differentiation and even cell response to drugs. The conductive substrate, on the other hand, enables cell impedance to be measured and monitored, which is indicative of cell viability and spread. Two dimensional profiles of the cross section of a single cell taken via Atomic Force Microscopy (AFM) from the fixed cell on glass, and its replicas on polydimethylsiloxane (PDMS) and conductive hydrogel (CH) show unprecedented replication of cellular features with an average replication fidelity of more than 90%. Furthermore, crosslinking CH films demonstrated a significant increase in electrical conductivity from 10−6 S/cm to 1 S/cm. Conductive bioimprints can provide a suitable platform for biosensing applications and potentially for monitoring implant-tissue reactions in medical devices.
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Siehr A, Flory C, Callaway T, Schumacher RJ, Siegel RA, Shen W. Implantable and Degradable Thermoplastic Elastomer. ACS Biomater Sci Eng 2021; 7:5598-5610. [PMID: 34788004 DOI: 10.1021/acsbiomaterials.1c01123] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Biodegradable and implantable materials having elastomeric properties are highly desirable for many biomedical applications. Here, we report that poly(lactide)-co-poly(β-methyl-δ-valerolactone)-co-poly(lactide) (PLA-PβMδVL-PLA), a thermoplastic triblock poly(α-ester), has combined favorable properties of elasticity, biodegradability, and biocompatibility. This material exhibits excellent elastomeric properties in both dry and aqueous environments. The elongation at break is approximately 1000%, and stretched specimens completely recover to their original shape after force is removed. The material is degradable both in vitro and in vivo; it degrades more slowly than poly(glycerol sebacate) and more rapidly than poly(caprolactone) in vivo. Both the polymer and its degradation product show high cytocompatibility in vitro. The histopathological analysis of PLA-PβMδVL-PLA specimens implanted in the gluteal muscle of rats for 1, 4, and 8 weeks revealed similar tissue responses as compared with poly(glycerol sebacate) and poly(caprolactone) controls, two widely accepted implantable polymers, suggesting that PLA-PβMδVL-PLA can potentially be used as an implantable material with favorable in vivo biocompatibility. The thermoplastic nature allows this elastomer to be readily processed, as demonstrated by the facile fabrication of the substrates with topographical cues to enhance muscle cell alignment. These properties collectively make this polymer potentially highly valuable for applications such as medical devices and tissue engineering scaffolds.
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Affiliation(s)
- Allison Siehr
- Department of Biomedical Engineering, University of Minnesota, 312 Church St. SE, 7-105 Nils Hasselmo Hall, Minneapolis, Minnesota 55455, United States
| | - Craig Flory
- Center for Translational Medicine, University of Minnesota, Phillips-Wangensteen Building 516 Delaware St. SE, MMC 367, Minneapolis, Minnesota 55455, United States
| | - Trenton Callaway
- Department of Biomedical Engineering, University of Minnesota, 312 Church St. SE, 7-105 Nils Hasselmo Hall, Minneapolis, Minnesota 55455, United States
| | - Robert J Schumacher
- Center for Translational Medicine, University of Minnesota, Phillips-Wangensteen Building 516 Delaware St. SE, MMC 367, Minneapolis, Minnesota 55455, United States.,Experimental and Clinical Pharmacology, University of Minnesota, 7-115 Weaver-Densford Hall, 308 Harvard St. SE, Minneapolis, Minnesota 55455, United States
| | - Ronald A Siegel
- Department of Biomedical Engineering, University of Minnesota, 312 Church St. SE, 7-105 Nils Hasselmo Hall, Minneapolis, Minnesota 55455, United States.,Department of Pharmaceutics, University of Minnesota, 308 Harvard St. SE, Room 9-177 Weaver Densford Hall, Minneapolis, Minnesota 55455, United States.,Institute for Engineering in Medicine, University of Minnesota, 420 Delaware St. SE, 725 Mayo Memorial Building, MMC 609, Minneapolis, Minnesota 55455, United States
| | - Wei Shen
- Department of Biomedical Engineering, University of Minnesota, 312 Church St. SE, 7-105 Nils Hasselmo Hall, Minneapolis, Minnesota 55455, United States.,Institute for Engineering in Medicine, University of Minnesota, 420 Delaware St. SE, 725 Mayo Memorial Building, MMC 609, Minneapolis, Minnesota 55455, United States
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Bai M, Cai L, Li X, Ye L, Xie J. Stiffness and topography of biomaterials dictate cell-matrix interaction in musculoskeletal cells at the bio-interface: A concise progress review. J Biomed Mater Res B Appl Biomater 2020; 108:2426-2440. [PMID: 32027091 DOI: 10.1002/jbm.b.34575] [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: 07/10/2019] [Revised: 12/30/2019] [Accepted: 01/19/2020] [Indexed: 02/05/2023]
Abstract
Mutually interacted musculoskeletal tissues work together within the physiological environment full of varieties of external stimulus. Consistent with the locomotive function of the tissues, musculoskeletal cells are remarkably mechanosensitive to the physical cues. Signals like extracellular matrix (ECM) stiffness, topography, and geometry can be sensed and transduced into intracellular signaling cascades to trigger a series of cell responses, including cell adhesion, cell phenotype maintenance, cytoskeletal reconstruction, and stem cell differentiation (Du et al., 2011; Murphy et al., 2014; Lv et al., 2015; Kim et al., 2016; Kumar et al., 2017). With the development of tissue engineering and regenerative medicine, the potent effects of ECM physical properties on cell behaviors at the cell-matrix interface are drawing much attention. To mimic the interaction between cell and its ECM physical properties, developing advanced biomaterials with desired characteristics which could achieve the biointerface between cells and the surrounded matrix close to the physiological conditions becomes a great hotspot. In this review, based on the current publications in the field of biointerfaces, we systematically summarized the significant roles of stiffness and topography on musculoskeletal cell behaviors. We hope to shed light on the importance of physical cues in musculoskeletal tissue engineering and provide up to date strategies towards the natural or artificial replication of physiological microenvironment.
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Affiliation(s)
- Mingru Bai
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Linyi Cai
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Xin Li
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Ling Ye
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Jing Xie
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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Evans JJ, Alkaisi MM, Sykes PH. Tumour Initiation: a Discussion on Evidence for a "Load-Trigger" Mechanism. Cell Biochem Biophys 2019; 77:293-308. [PMID: 31598831 PMCID: PMC6841748 DOI: 10.1007/s12013-019-00888-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Accepted: 09/23/2019] [Indexed: 12/18/2022]
Abstract
Appropriate mechanical forces on cells are vital for normal cell behaviour and this review discusses the possibility that tumour initiation depends partly on the disruption of the normal physical architecture of the extracellular matrix (ECM) around a cell. The alterations that occur thence promote oncogene expression. Some questions, that are not answered with certainty by current consensus mechanisms of tumourigenesis, are elegantly explained by the triggering of tumours being a property of the physical characteristics of the ECM, which is operative following loading of the tumour initiation process with a relevant gene variant. Clinical observations are consistent with this alternative hypothesis which is derived from studies that have, together, accumulated an extensive variety of data incorporating biochemical, genetic and clinical findings. Thus, this review provides support for the view that the ECM may have an executive function in induction of a tumour. Overall, reported observations suggest that either restoring an ECM associated with homeostasis or targeting the related signal transduction mechanisms may possibly be utilised to modify or control the early progression of cancers. The review provides a coherent template for discussing the notion, in the context of contemporary knowledge, that tumourigenesis is an alliance of biochemistry, genetics and biophysics, in which the physical architecture of the ECM may be a fundamental component. For more definitive clarification of the concept there needs to be a phalanx of experiments conceived around direct questions that are raised by this paper.
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Affiliation(s)
- John J Evans
- Department of Obstetrics and Gynaecology, University of Otago Christchurch, Christchurch, New Zealand.
- MacDiarmid Institute of Advanced Materials and Nanotechnology, Christchurch, New Zealand.
| | - Maan M Alkaisi
- MacDiarmid Institute of Advanced Materials and Nanotechnology, Christchurch, New Zealand
- Department of Electrical and Computer Engineering, University of Canterbury, Christchurch, New Zealand
| | - Peter H Sykes
- Department of Obstetrics and Gynaecology, University of Otago Christchurch, Christchurch, New Zealand
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Almonacid Suarez AM, Zhou Q, van Rijn P, Harmsen MC. Directional topography gradients drive optimum alignment and differentiation of human myoblasts. J Tissue Eng Regen Med 2019; 13:2234-2245. [PMID: 31677226 PMCID: PMC6973069 DOI: 10.1002/term.2976] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2019] [Revised: 09/06/2019] [Accepted: 09/26/2019] [Indexed: 12/20/2022]
Abstract
Tissue engineering of skeletal muscle aims to replicate the parallel alignment of myotubes on the native tissue. Directional topography gradients allow the study of the influence of topography on cellular orientation, proliferation, and differentiation, resulting in yield cues and clues to develop a proper in vitro environment for muscle tissue engineering. In this study, we used a polydimethylsiloxane-based substrate containing an aligned topography gradient with sinusoidal features ranging from wavelength (λ) = 1,520 nm and amplitude (A) =176 nm to λ = 9,934 nm and A = 2,168 nm. With this topography gradient, we evaluated the effect of topography on human myoblasts distribution, dominant orientation, cell area, nuclei coverage, cell area per number of nuclei, and nuclei area of myotubes. We showed that human myoblasts aligned and differentiated irrespective of the topography section. In addition, aligned human myotubes showed functionality and maturity by contracting spontaneously and nuclei peripheral organization resembling natural myotubes.
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Affiliation(s)
- Ana Maria Almonacid Suarez
- Department of Pathology and Medical Biology, University Medical Center GroningenUniversity of GroningenGroningenThe Netherlands
| | - Qihui Zhou
- Department of Biomedical Engineering, W.J. Kolff Institute for Biomedical Engineering and Materials Science, University Medical Center GroningenUniversity of GroningenGroningenThe Netherlands
| | - Patrick van Rijn
- Department of Biomedical Engineering, W.J. Kolff Institute for Biomedical Engineering and Materials Science, University Medical Center GroningenUniversity of GroningenGroningenThe Netherlands
- Zernike Institute for Advanced MaterialsUniversity of GroningenGroningenThe Netherlands
| | - Martin C. Harmsen
- Department of Pathology and Medical Biology, University Medical Center GroningenUniversity of GroningenGroningenThe Netherlands
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Narayanamurthy V, Samsuri F, Firus Khan AY, Hamzah HA, Baharom MB, Kumary TV, Anil Kumar PR, Raj DK. Direct cell imprint lithography in superconductive carbon black polymer composites: process optimization, characterization and in vitro toxicity analysis. BIOINSPIRATION & BIOMIMETICS 2019; 15:016002. [PMID: 30897554 DOI: 10.1088/1748-3190/ab1243] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Cell imprint lithography (CIL) or cell replication plays a vital role in fields like biomimetic smart culture substrates, bone tissue engineering, cell guiding, cell adhesion, tissue engineering, cell microenvironments, tissue microenvironments, cell research, drug delivery, diagnostics, therapeutics and many other applications. Herein we report a new formulation of superconductive carbon black photopolymer composite and its characterization towards a CIL process technique. In this article, we demonstrated an approach of using a carbon nanoparticle-polymer composite (CPC) for patterning cells. It is observed that a 0.3 wt % load of carbon nanoparticles (CNPs) in a carbon polymer mixture (CPM) was optimal for cell-imprint replica fabrication. The electrical resistance of the 3-CPC (0.3 wt %) was reduced by 68% when compared to N-CPC (0 wt %). This method successfully replicated the single cell with sub-organelle scale. The shape of microvesicles, grooves, pores, blebs or microvilli on the cellular surface was patterned clearly. This technique delivers a free-standing cell feature substrate. In vitro evaluation of the polymer demonstrated it as an ideal candidate for biomimetic biomaterial applications. This approach also finds its application in study based on morphology, especially for drug delivery applications and for investigations based on molecular pathways.
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Affiliation(s)
- Vigneswaran Narayanamurthy
- Faculty of Electrical and Electronics Engineering, University Malaysia Pahang, Pekan 26600, Malaysia. Faculty of Medicine, International Islamic University Malaysia, Kuantan, Pahang 25200, Malaysia
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Fontoura JC, Viezzer C, Dos Santos FG, Ligabue RA, Weinlich R, Puga RD, Antonow D, Severino P, Bonorino C. Comparison of 2D and 3D cell culture models for cell growth, gene expression and drug resistance. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 107:110264. [PMID: 31761183 DOI: 10.1016/j.msec.2019.110264] [Citation(s) in RCA: 135] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2019] [Revised: 09/12/2019] [Accepted: 09/28/2019] [Indexed: 12/24/2022]
Abstract
In vitro drug screening is widely used in the development of new drugs, because they constitute a cost-effective approach to select compounds with more potential for therapy. They are also an attractive alternative to in vivo testing. However, most of these assays are done in two-dimensional culture models, where cells are grown on a polystyrene or glass flat surface. In order to develop in vitro models that would more closely resemble physiological conditions, three-dimensional models have been developed. Here, we introduce two novel fully synthetic scaffolds produced using the polymer polyhydroxybutyrate (PHB): a Solvent-Casting Particle-Leaching (SCPL) membrane; and an electrospun membrane, to be used for 3D cultures of B16 F10 murine melanoma cells and 4T1 murine breast cancer cells. A 2D cell culture system in regular tissue culture plates and a classical 3D model where cells are grown on a commercially available gel derived from Engelbreth-Holm Swarm (EHS) tumor were used for comparison with the synthetic scaffolds. Cells were also collected from in vivo tumors grown as grafts in syngeneic mice. Morphology, cell viability, response to chemotherapy and gene expression analysis were used to compare all systems. In the electrospun membrane model, cells were grown on nanometer-scale fibers and in the SCPL membrane, which provides a foam-like structure for cell growth, pore sizes varied. Cells grown on all 3D models were able to form aggregates and spheroids, allowing for increased cell-cell contact when compared with the 2D system. Cell morphology was also more similar between 3D systems and cells collected from the in vivo tumors. Cells grown in 3D models showed an increase in resistance to dacarbazine, and cisplatin. Gene expression analysis also revealed similarities among all 3D platforms. The similarities between the two synthetic systems to the classic EHS gel model highlight their potential application as cost effective substitutes in drug screening, in which fully synthetic models could represent a step towards higher reproducibility. We conclude PHB synthetic membranes offer a valuable alternative for 3D cultures.
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Affiliation(s)
- Julia C Fontoura
- Laboratório de Imunologia Celular e Molecular, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, RS, Brazil; Departamento de Ciências Básicas da Saúde, Universidade Federal de Ciências da Saúde, Porto Alegre, RS, Brazil
| | - Christian Viezzer
- Laboratório de Imunologia Celular e Molecular, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, RS, Brazil
| | | | - Rosane A Ligabue
- Laboratório de Caracterização de Materiais, PUCRS, Porto Alegre, RS, Brazil
| | | | - Renato D Puga
- Hospital Israelita Albert Einstein, São Paulo, SP, Brazil
| | - Dyeison Antonow
- Institute of Petroleum and Natural Resources (IPR), Tecnopuc, PUCRS, Porto Alegre, RS, Brazil
| | | | - Cristina Bonorino
- Departamento de Ciências Básicas da Saúde, Universidade Federal de Ciências da Saúde, Porto Alegre, RS, Brazil; Department of Surgery, School of Medicine, University of California at San Diego, United States.
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Jenkins TL, Little D. Synthetic scaffolds for musculoskeletal tissue engineering: cellular responses to fiber parameters. NPJ Regen Med 2019; 4:15. [PMID: 31263573 PMCID: PMC6597555 DOI: 10.1038/s41536-019-0076-5] [Citation(s) in RCA: 90] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2018] [Accepted: 05/14/2019] [Indexed: 12/14/2022] Open
Abstract
Tissue engineering often uses synthetic scaffolds to direct cell responses during engineered tissue development. Since cells reside within specific niches of the extracellular matrix, it is important to understand how the matrix guides cell response and then incorporate this knowledge into scaffold design. The goal of this review is to review elements of cell-matrix interactions that are critical to informing and evaluating cellular response on synthetic scaffolds. Therefore, this review examines fibrous proteins of the extracellular matrix and their effects on cell behavior, followed by a discussion of the cellular responses elicited by fiber diameter, alignment, and scaffold porosity of two dimensional (2D) and three dimensional (3D) synthetic scaffolds. Variations in fiber diameter, alignment, and scaffold porosity guide stem cells toward different lineages. Cells generally exhibit rounded morphology on nanofibers, randomly oriented fibers, and low-porosity scaffolds. Conversely, cells exhibit elongated, spindle-shaped morphology on microfibers, aligned fibers, and high-porosity scaffolds. Cells migrate with higher velocities on nanofibers, aligned fibers, and high-porosity scaffolds but migrate greater distances on microfibers, aligned fibers, and highly porous scaffolds. Incorporating relevant biomimetic factors into synthetic scaffolds destined for specific tissue application could take advantage of and further enhance these responses.
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Affiliation(s)
- Thomas Lee Jenkins
- Department of Biomedical Engineering, Purdue University, West Lafayette, IN 47907 USA
| | - Dianne Little
- Department of Biomedical Engineering, Purdue University, West Lafayette, IN 47907 USA
- Department of Basic Medical Sciences, Purdue University, West Lafayette, IN 47907 USA
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Comparison of replica leaf surface materials for phyllosphere microbiology. PLoS One 2019; 14:e0218102. [PMID: 31170240 PMCID: PMC6553772 DOI: 10.1371/journal.pone.0218102] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Accepted: 05/27/2019] [Indexed: 12/25/2022] Open
Abstract
Artificial surfaces are routinely used instead of leaves to enable a reductionist approach in phyllosphere microbiology, the study of microorganisms residing on plant leaf surfaces. Commonly used artificial surfaces include, flat surfaces, such as metal and nutrient agar, and microstructured surfaces, such as isolate leaf cuticles or reconstituted leaf waxes. However, interest in replica leaf surfaces as an artificial surface is growing, as replica surfaces provide an improved representation of the complex topography of leaf surfaces. To date, leaf surfaces have predominantly been replicated for their superhydrophobic properties. In contrast, in this paper we investigated the potential of agarose, the elastomer polydimethylsiloxane (PDMS), and gelatin as replica leaf surface materials for phyllosphere microbiology studies. Using a test pattern of pillars, we investigated the ability to replicate microstructures into the materials, as well as the degradation characteristics of the materials in environmental conditions. Pillars produced in PDMS were measured to be within 10% of the mold master and remained stable throughout the degradation experiments. In agarose and gelatin the pillars deviated by more than 10% and degraded considerably within 48 hours in environmental conditions. Furthermore, we investigated the surface energy of the materials, an important property of a leaf surface, which influences resource availability and microorganism attachment. We found that the surface energy and bacterial viability on PDMS was comparable to isolated Citrus × aurantium and Populus × canescens leaf cuticles. Hence indicating that PDMS is the most suitable material for replica leaf surfaces. In summary, our experiments highlight the importance of considering the inherent material properties when selecting a replica leaf surface for phyllosphere microbiology studies. As demonstrated, a PDMS replica leaf offers a control surface that can be used for investigating microbe-microbe and microbe-plant interactions in the phyllosphere, which will enable mitigation strategies against pathogens to be developed.
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Huang J, Chen Y, Tang C, Fei Y, Wu H, Ruan D, Paul ME, Chen X, Yin Z, Heng BC, Chen W, Shen W. The relationship between substrate topography and stem cell differentiation in the musculoskeletal system. Cell Mol Life Sci 2019; 76:505-521. [PMID: 30390116 PMCID: PMC11105278 DOI: 10.1007/s00018-018-2945-2] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 09/15/2018] [Accepted: 10/12/2018] [Indexed: 12/11/2022]
Abstract
It is well known that biomaterial topography can exert a profound influence on various cellular functions such as migration, polarization, and adhesion. With the development and refinement of manufacturing technology, much research has recently been focused on substrate topography-induced cell differentiation, particularly in the field of tissue engineering. Even without biological and chemical stimuli, the differentiation of stem cells can also be initiated by various biomaterials with different topographic features. However, the underlying mechanisms of this biological phenomenon remain elusive. During the past few decades, many researchers have demonstrated that cells can sense the topography of materials through the assembly and polymerization of membrane proteins. Following the activation of RHO, TGF-b or FAK signaling pathways, cells can be induced into various differentiation states. But these signaling pathways often coincide with canonical mechanical transduction pathways, and no firm conclusion has been reached among researchers in this field on topography-specific signaling pathways. On the other hand, some substrate topographies are reported to have the ability to inhibit differentiation and maintain the 'stemness' of stem cells. In this review, we will summarize the role of topography in musculoskeletal system regeneration and explore possible topography-related signaling pathways involved in cell differentiation.
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Affiliation(s)
- Jiayun Huang
- Department of Orthopedic Surgery, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang, 310009, China
- Dr. Li Dak Sum and Yip Yio Chin Center for Stem Cell and Regenerative Medicine, Zhejiang University, Zhejiang, 310000, China
- Orthopaedics Research Institute of Zhejiang University, Zhejiang, China
- Department of Sports Medicine, School of Medicine, Zhejiang University, Zhejiang, 310000, China
- China Orthopaedic Regenerative Medicine (CORMed), Hangzhou, China
| | - Yangwu Chen
- Department of Orthopedic Surgery, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang, 310009, China
- Dr. Li Dak Sum and Yip Yio Chin Center for Stem Cell and Regenerative Medicine, Zhejiang University, Zhejiang, 310000, China
- Orthopaedics Research Institute of Zhejiang University, Zhejiang, China
- Department of Sports Medicine, School of Medicine, Zhejiang University, Zhejiang, 310000, China
- China Orthopaedic Regenerative Medicine (CORMed), Hangzhou, China
| | - Chenqi Tang
- Department of Orthopedic Surgery, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang, 310009, China
- Dr. Li Dak Sum and Yip Yio Chin Center for Stem Cell and Regenerative Medicine, Zhejiang University, Zhejiang, 310000, China
- Orthopaedics Research Institute of Zhejiang University, Zhejiang, China
- Department of Sports Medicine, School of Medicine, Zhejiang University, Zhejiang, 310000, China
- China Orthopaedic Regenerative Medicine (CORMed), Hangzhou, China
| | - Yang Fei
- Department of Orthopedic Surgery, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang, 310009, China
- Orthopaedics Research Institute of Zhejiang University, Zhejiang, China
- China Orthopaedic Regenerative Medicine (CORMed), Hangzhou, China
| | - Haoyu Wu
- Dr. Li Dak Sum and Yip Yio Chin Center for Stem Cell and Regenerative Medicine, Zhejiang University, Zhejiang, 310000, China
- Department of Sports Medicine, School of Medicine, Zhejiang University, Zhejiang, 310000, China
| | - Dengfeng Ruan
- Department of Orthopedic Surgery, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang, 310009, China
- Orthopaedics Research Institute of Zhejiang University, Zhejiang, China
- China Orthopaedic Regenerative Medicine (CORMed), Hangzhou, China
| | - Maswikiti Ewetse Paul
- Dr. Li Dak Sum and Yip Yio Chin Center for Stem Cell and Regenerative Medicine, Zhejiang University, Zhejiang, 310000, China
- Department of Sports Medicine, School of Medicine, Zhejiang University, Zhejiang, 310000, China
| | - Xiao Chen
- Dr. Li Dak Sum and Yip Yio Chin Center for Stem Cell and Regenerative Medicine, Zhejiang University, Zhejiang, 310000, China
- Department of Sports Medicine, School of Medicine, Zhejiang University, Zhejiang, 310000, China
- China Orthopaedic Regenerative Medicine (CORMed), Hangzhou, China
| | - Zi Yin
- Dr. Li Dak Sum and Yip Yio Chin Center for Stem Cell and Regenerative Medicine, Zhejiang University, Zhejiang, 310000, China
- Department of Sports Medicine, School of Medicine, Zhejiang University, Zhejiang, 310000, China
| | - Boon Chin Heng
- Faculty of Dentistry, The University of Hong Kong, Pokfulam, Hong Kong SAR, China
| | - Weishan Chen
- Department of Orthopedic Surgery, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang, 310009, China
| | - Weiliang Shen
- Department of Orthopedic Surgery, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang, 310009, China.
- Dr. Li Dak Sum and Yip Yio Chin Center for Stem Cell and Regenerative Medicine, Zhejiang University, Zhejiang, 310000, China.
- Orthopaedics Research Institute of Zhejiang University, Zhejiang, China.
- Department of Sports Medicine, School of Medicine, Zhejiang University, Zhejiang, 310000, China.
- China Orthopaedic Regenerative Medicine (CORMed), Hangzhou, China.
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14
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Bergholt NL, Foss M, Saeed A, Gadegaard N, Lysdahl H, Lind M, Foldager CB. Surface chemistry, substrate, and topography guide the behavior of human articular chondrocytes cultured in vitro. J Biomed Mater Res A 2018; 106:2805-2816. [PMID: 29907992 DOI: 10.1002/jbm.a.36467] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 03/22/2018] [Accepted: 05/22/2018] [Indexed: 01/18/2023]
Abstract
Understanding the behavior of chondrocytes in contact with artificial culture surfaces is becoming increasingly important in attaining appropriate ex vivo culture conditions of chondrocytes in cartilage regeneration. Chondrocyte transplantation-based cartilage repair requires efficiently expanded chondrocytes, and the culture surface plays an important role in guiding the behavior of the cell. Micro- and nano-engineered surfaces make it possible to modulate cell behavior. We hypothesized that the combined influence of topography, substrate, and surface chemistry may affect the chondrocyte culturing in terms of proliferation and phenotypic means. Human chondrocytes were cultured on polystyrene fabricated microstructures, flat polydimethylsiloxane (PDMS), or polystyrene treated with fibronectin or oxygen plasma and cultured for 1, 4, 7, and 10 days. The behavior of chondrocytes was evaluated by proliferation, viability, chondrogenic gene expression, and cell morphology. Contrary to our hypothesis, microstructures in polystyrene did not significantly influence the behavior of chondrocytes neither under normoxic- nor hypoxic conditions. However, changes in the substrate stiffness and surface chemistry were found to influence cell viability, gene expression, and morphology of human chondrocytes. Oxygen plasma treatment was the most important parameter followed by the softer substrate type PDMS. The findings indicate the culture of human chondrocytes on softer substratum and surface activation by oxygen plasma may prevent dedifferentiation and may improve chondrocyte transplantation-based cartilage repair. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 106A: 2805-2816, 2018.
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Affiliation(s)
| | - Morten Foss
- Interdisciplinary Nanoscience Center, iNANO, University Aarhus, Aarhus, Denmark
| | - Anwer Saeed
- Division of Biomedical Engineering, University of Glasgow, Glasgow, G12 8LT, United Kingdom
| | - Nikolaj Gadegaard
- Division of Biomedical Engineering, University of Glasgow, Glasgow, G12 8LT, United Kingdom
| | - Helle Lysdahl
- Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Martin Lind
- Sports Trauma Clinic, Aarhus University Hospital, Aarhus, Denmark
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15
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Choi YJ, Park SJ, Yi HG, Lee H, Kim DS, Cho DW. Muscle-derived extracellular matrix on sinusoidal wavy surfaces synergistically promotes myogenic differentiation and maturation. J Mater Chem B 2018; 6:5530-5539. [PMID: 32254963 DOI: 10.1039/c8tb01475b] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The generation of physiologically aligned multinucleated myotubes is critical in the fabrication of functional engineered skeletal muscle. Although micro-/nano-topographical contact guidance, such as groove/ridge structures, has induced the alignment of muscle fibers by providing cells with extracellular matrix (ECM) topography, the complex biochemical microenvironment of the ECM cannot be recapitulated. Here, we report the enhancement of myogenic differentiation and maturation using muscle decellularized ECM (mdECM) and sinusoidal wavy surfaces, which provided a biochemical microenvironment and microscale contact guidance, respectively. Sinusoidal wavy polystyrene surfaces with wavelengths of 20, 40, and 80 μm were fabricated by a deep X-ray lithography-based process. The mdECM was prepared by decellularization of porcine tibialis anterior skeletal muscle. An mdECM coating significantly improved the surface wettability of polystyrene substrates and exhibited higher seeding efficiency, cell viability, and proliferation compared with collagen- and non-coating cases. The sinusoidal wavy surfaces induced well-aligned myotubes and showed significantly enhanced formation of myotubes and myogenic differentiation when the surface was coated with mdECM. Particularly, there was an approximately 1.5-2 fold improvement in morphological analysis and gene expression for mdECM-compared to non-coated sinusoidal wavy surfaces. These results suggest that the consideration of both topographical and biochemical environmental cues can generate a highly mimicked ECM environment, thereby providing cells with a synergistic effect on myogenic differentiation and maturation. The outcome of this study will be useful in developing of functional engineered muscle for application in tissue regeneration or a high-throughput in vitro model for drug screening.
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Affiliation(s)
- Yeong-Jin Choi
- Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology (POSTECH), Pohang, Kyungbuk 37673, Korea
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16
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Medlock J, Das AAK, Madden LA, Allsup DJ, Paunov VN. Cancer bioimprinting and cell shape recognition for diagnosis and targeted treatment. Chem Soc Rev 2018; 46:5110-5127. [PMID: 28660268 DOI: 10.1039/c7cs00179g] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Cancer incidence and mortality have both increased in the last decade and are predicted to continue to rise. Diagnosis and treatment of cancers are often hampered by the inability to specifically target neoplastic cells. Bioimprinting is a promising new approach to overcome shortfalls in cancer targeting. Highly specific recognition cavities can be made into polymer matrices to mimic lock-and-key actions seen in in vivo biological systems. Early studies concentrated on molecules and were inhibited by template size complexity. Surface imprinting allows the capture of increasingly complex motifs from polypeptides to single cell organisms and mammalian cells. Highly specific cell shape recognition can also be achieved by cell interaction with imprints that can be made into polymer matrices to mimic biological systems at a molecular level. Bioimprinting has also been used to achieve nanometre scale resolution imaging of cancer cells. Studies of bioimprint-based drug delivery on cancer cells have been recently trialled in vitro and show that this approach can potentially improve existing chemotherapeutic approaches. This review focuses on the possible applications of bioimprinting with particular regards to cancer understanding, diagnosis and therapy. Cell imprints, incorporated into biosensors can allow the limits of detection to be improved or negate the need for extensive patient sample processing. Similar cell imprinting platforms can be used for nanoscale imaging of cancer morphology, as well as to investigate topographical signalling of cancer cells in vitro. Lastly, bioimprints also have applications as selective drug delivery vehicles to tumours with the potential to decrease chemotherapy-related side effects.
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Affiliation(s)
- Jevan Medlock
- School of Mathematics and Physical Sciences (Chemistry), University of Hull, Cottingham Road, Hull, HU67RX, UK.
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17
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Okutani C, Wagatsuma A, Mabuchi K, Hoshino T. Directed cell migration in co-cultures by topographic curvature for heterogeneous tissue engineering. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2017; 2017:1607-1610. [PMID: 29060190 DOI: 10.1109/embc.2017.8037146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Placing cells in the proper position is important for tissue engineering. Previous works addressed this subject in the way of controlling cell migration by micro- or nano-patterning the substrates. However, the problem of changing spatial cell density freely under co-culture conditions is remaining. To solve this problem, in this work, we report that C2C12 spatial cell density changes by the patterning geometric boundary of the topographical structures. In 48 h after seeding cells, at the linear boundary (ridge-groove) structures, C2C12 Groove/Ridge ratio was under 0.70 both under monoculture conditions and under co-culture conditions. In contrast, at the combining the linear boundary and the round boundary (ridge-groove + hole) structures, the ratio was over 0.89 under both culture conditions. This our finding will provide a new device which enables to manipulate spatial cell density under co-culture conditions for heterogeneous tissue engineering.
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18
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Tan LH, Sykes PH, Alkaisi MM, Evans JJ. Cell-like features imprinted in the physical nano- and micro-topography of the environment modify the responses to anti-cancer drugs of endometrial cancer cells. Biofabrication 2017; 9:015017. [DOI: 10.1088/1758-5090/aa5c9a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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19
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Escutia-Guadarrama L, Vázquez-Victorio G, Martínez-Pastor D, Nieto-Rivera B, Sosa-Garrocho M, Macías-Silva M, Hautefeuille M. Fabrication of low-cost micropatterned polydimethyl-siloxane scaffolds to organise cells in a variety of two-dimensioanl biomimetic arrangements for lab-on-chip culture platforms. J Tissue Eng 2017; 8:2041731417741505. [PMID: 29225769 PMCID: PMC5714070 DOI: 10.1177/2041731417741505] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Accepted: 10/18/2017] [Indexed: 12/13/2022] Open
Abstract
We present the rapid-prototyping of type I collagen micropatterns on poly-dimethylsiloxane substrates for the biomimetic confinement of cells using the combination of a surface oxidation treatment and 3-aminopropyl triethoxysilane silanisation followed by glutaraldehyde crosslinking. The aim of surface treatment is to stabilise microcontact printing transfer of this natural extracellular matrix protein that usually wears out easily from poly-dimethylsiloxane, which is not suitable for biomimetic cell culture platforms and lab-on-chip applications. A low-cost CD-DVD laser was used to etch biomimetic micropatterns into acrylic sheets that were in turn replicated to poly-dimethylsiloxane slabs with the desired features. These stamps were finally inked with type I collagen for microcontact printing transfer on the culture substrates in a simple manner. Human hepatoma cells (HepG2) and rat primary hepatocytes, which do not adhere to bare poly-dimethylsiloxane, were successfully seeded and showed optimal adhesion and survival on simple protein micropatterns with a hepatic cord geometry in order to validate our technique. HepG2 cells also proliferated on the stamps. Soft and stiff poly-dimethylsiloxane layers were also tested to demonstrate that our cost-effective process is compatible with biomimetic organ-on-chip technology integrating tunable stiffness with a potential application to drug testing probes development where such cells are commonly used.
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Affiliation(s)
- Lidia Escutia-Guadarrama
- Facultad de Ciencias, Universidad Nacional Autónoma de México, Ciudad de México, México
- Laboratorio Nacional de Soluciones Biomiméticas para Diagnóstico y Terapia, Facultad de Ciencias, Universidad Nacional Autónoma de México, Ciudad de México, México
| | - Genaro Vázquez-Victorio
- Facultad de Ciencias, Universidad Nacional Autónoma de México, Ciudad de México, México
- Laboratorio Nacional de Soluciones Biomiméticas para Diagnóstico y Terapia, Facultad de Ciencias, Universidad Nacional Autónoma de México, Ciudad de México, México
| | - David Martínez-Pastor
- Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Ciudad de México, México
| | - Brenda Nieto-Rivera
- Facultad de Ciencias, Universidad Nacional Autónoma de México, Ciudad de México, México
| | - Marcela Sosa-Garrocho
- Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Ciudad de México, México
| | - Marina Macías-Silva
- Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Ciudad de México, México
- Laboratorio Nacional de Soluciones Biomiméticas para Diagnóstico y Terapia, Facultad de Ciencias, Universidad Nacional Autónoma de México, Ciudad de México, México
| | - Mathieu Hautefeuille
- Facultad de Ciencias, Universidad Nacional Autónoma de México, Ciudad de México, México
- Laboratorio Nacional de Soluciones Biomiméticas para Diagnóstico y Terapia, Facultad de Ciencias, Universidad Nacional Autónoma de México, Ciudad de México, México
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20
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Hasturk O, Sivas A, Karasozen B, Demirci U, Hasirci N, Hasirci V. Quantification of Type, Timing, and Extent of Cell Body and Nucleus Deformations Caused by the Dimensions and Hydrophilicity of Square Prism Micropillars. Adv Healthc Mater 2016; 5:2972-2982. [PMID: 27925459 DOI: 10.1002/adhm.201600857] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Revised: 09/21/2016] [Indexed: 01/30/2023]
Abstract
Novel digital analysis strategies are developed for the quantification of changes in the cytoskeletal and nuclear morphologies of mesenchymal stem cells cultured on micropillars. Severe deformations of nucleus and distinct conformational changes of cell body ranging from extensive elongation to branching are visualized and quantified. These deformations are caused mainly by the dimensions and hydrophilicity of the micropillars.
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Affiliation(s)
- Onur Hasturk
- Graduate Department of Biotechnology; Middle East Technical University (METU); Ankara 06800 Turkey
- BIOMATEN; Center of Excellence in Biomaterials and Tissue Engineering; Middle East Technical University (METU); Ankara 06800 Turkey
| | - Abdullah Sivas
- Institute of Applied Mathematics; Middle East Technical University (METU); Ankara 06800 Turkey
| | - Bulent Karasozen
- Institute of Applied Mathematics; Middle East Technical University (METU); Ankara 06800 Turkey
| | - Utkan Demirci
- Bio-Acoustic-MEMs in Medicine (BAMM) Laboratory; Stanford School of Medicine; Palo Alto CA 94394 USA
| | - Nesrin Hasirci
- Graduate Department of Biotechnology; Middle East Technical University (METU); Ankara 06800 Turkey
- BIOMATEN; Center of Excellence in Biomaterials and Tissue Engineering; Middle East Technical University (METU); Ankara 06800 Turkey
- Department of Chemistry; Middle East Technical University (METU); Ankara 06800 Turkey
| | - Vasif Hasirci
- Graduate Department of Biotechnology; Middle East Technical University (METU); Ankara 06800 Turkey
- BIOMATEN; Center of Excellence in Biomaterials and Tissue Engineering; Middle East Technical University (METU); Ankara 06800 Turkey
- Department of Biological Sciences; Middle East Technical University (METU); Ankara 06800 Turkey
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