1
|
Kim MK, Park J, Tak S, Paek K, Bang G, Woo SM, Ravichandran NK, Hong WG, Kang HW, Kim H, Bae JY, Kim JA. A long-term storable gel-laden chip composite built in a multi-well plate enabling in situcell encapsulation for high-throughput liver model. Biofabrication 2024; 16:025020. [PMID: 38390723 DOI: 10.1088/1758-5090/ad28ef] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Accepted: 02/13/2024] [Indexed: 02/24/2024]
Abstract
Hydrogels are widely used as scaffold materials for constructingin vitrothree-dimensional microphysiological systems. However, their high sensitivity to various external cues hinders the development of hydrogel-laden, microscale, and high-throughput chips. Here, we have developed a long-term storable gel-laden chip composite built in a multi-well plate, which enablesin situcell encapsulation and facilitates high-throughput analysis. Through optimized chemical crosslinking and freeze-drying method (C/FD), we have achieved a high-quality of gel-laden chip composite with excellent transparency, uniform porosity, and appropriate swelling and mechanical characteristics. Besides collagen, decellularized extracellular matrix with tissue-specific biochemical compound has been applied as chip composite. As a ready-to-use platform,in situcell encapsulation within the gel has been achieved through capillary force generated during gel reswelling. The liver-mimetic chip composite, comprising HepG2 cells or primary hepatocytes, has demonstrated favorable hepatic functionality and high sensitivity in drug testing. The developed fabrication process with improved stability of gels and storability allows chip composites to be stored at a wide range of temperatures for up to 28 d without any deformation, demonstrating off-the-shelf products. Consequently, this provides an exceptionally simple and long-term storable platform that can be utilized for an efficient tissue-specific modeling and various biomedical applications.
Collapse
Affiliation(s)
- Min Kyeong Kim
- Center for Scientific Instrumentation, Korea Basic Science Institute, Daejeon 34133, Republic of Korea
| | - Jubin Park
- Center for Scientific Instrumentation, Korea Basic Science Institute, Daejeon 34133, Republic of Korea
- Program in Biomicro System Technology, Korea University, Seoul 02841, Republic of Korea
| | - Sungho Tak
- Center for Bio-Imaging and Translational Research, Korea Basic Science Institute, Cheongju 28119, Chungbuk, Republic of Korea
| | - Kyurim Paek
- Center for Scientific Instrumentation, Korea Basic Science Institute, Daejeon 34133, Republic of Korea
- Program in Biomicro System Technology, Korea University, Seoul 02841, Republic of Korea
| | - Geul Bang
- Research Center for Bioconvergence Analysis, Korea Basic Science Institute, Cheongju 28119, Chungbuk, Republic of Korea
| | - Sang-Mi Woo
- Center for Scientific Instrumentation, Korea Basic Science Institute, Daejeon 34133, Republic of Korea
| | - Naresh Kumar Ravichandran
- Center for Scientific Instrumentation, Korea Basic Science Institute, Daejeon 34133, Republic of Korea
| | - Won Gi Hong
- Research Center for Materials Analysis, Korea Basic Science Institute, Daejeon 34133, Republic of Korea
| | - Hyun-Wook Kang
- Department of Biomedical Engineering, Ulsan National Institute of Science and Technology, Ulju-gun 44919, Ulsan, Republic of Korea
| | - Hyang Kim
- Institute of New Horizon Regenerative Medicine, Myongji Hospital, Goyang 10475, Republic of Korea
| | - Ji Yong Bae
- Center for Scientific Instrumentation, Korea Basic Science Institute, Daejeon 34133, Republic of Korea
| | - Jeong Ah Kim
- Center for Scientific Instrumentation, Korea Basic Science Institute, Daejeon 34133, Republic of Korea
- Department of Bio-Analytical Science, University of Science and Technology, Daejeon 34113, Republic of Korea
- Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul 06974, Republic of Korea
| |
Collapse
|
2
|
Chen D, Li Y, Liu X, Zhao Y, Ren T, Guo J, Yang D, Li S. Multi-DNA-Modified Double-Network Hydrogel with Customized Microstructure: A Novel System for Living Circulating Tumor Cells Capture and Real-Time Detection. ACS APPLIED MATERIALS & INTERFACES 2024; 16:8301-8309. [PMID: 38319249 DOI: 10.1021/acsami.3c15432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2024]
Abstract
The precise and effective isolation of living circulating tumor cells (CTCs) from peripheral blood, followed by their real-time monitoring, is crucial for diagnosing cancer patients. In this study, a cell-imprinted double-network (DN) hydrogel modified with circular multi-DNA (CMD), coined the CMD-imprinted hydrogel with fixed cells as templates (CMD-CIDH), was developed. The hydrogel featured a customized surface for proficient capture of viable CTCs and in situ real-time fluorescent detection without subsequent release. The customized surface, constructed using polyacrylamide/chitosan DN hydrogel as the matrix on the cell template, had a dense network structure, thereby ensuring excellent stability and a low degradation rate. Optimal capture efficiencies, recorded at 93 ± 3% for MCF-7 cells and 90 ± 2% for Hela cells, were achieved by grafting the CMD and adjusting the nodule size on the customized surface. The capture efficiency remained significantly high at 67 ± 11% in simulated breast cancer patient experiments even at a minimal concentration of 5 cells mL-1. Furthermore, CMD grafted onto the surface produced a potent fluorescence signature, enabling in situ real-time fluorescent detection of the target cell's growth state even in complex environments. The customized surface is highly efficient for screening CTCs in peripheral blood and has promising potential for setting up the CTCs culture.
Collapse
Affiliation(s)
- Dongliang Chen
- Zhong Yuan Academy of Biological Medicine, Liaocheng People's Hospital, Liaocheng 252000, PR China
| | - Yonggang Li
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, PR China
| | - Xiaoqiu Liu
- Hospital of Stomatology, Jilin University, Changchun 130021, PR China
| | - Yali Zhao
- Engineering Laboratory of Low-Carbon Unconventional Water Resources Utilization and Water Quality Assurance, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, PR China
| | - Tianying Ren
- Zhong Yuan Academy of Biological Medicine, Liaocheng People's Hospital, Liaocheng 252000, PR China
| | - Jing Guo
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, PR China
| | - Dawei Yang
- Zhong Yuan Academy of Biological Medicine, Liaocheng People's Hospital, Liaocheng 252000, PR China
| | - Shenghai Li
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, PR China
| |
Collapse
|
3
|
Chi M, Yuan B, Xie Z, Hong J. The Innovative Biomaterials and Technologies for Developing Corneal Endothelium Tissue Engineering Scaffolds: A Review and Prospect. Bioengineering (Basel) 2023; 10:1284. [PMID: 38002407 PMCID: PMC10669703 DOI: 10.3390/bioengineering10111284] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 10/21/2023] [Accepted: 10/30/2023] [Indexed: 11/26/2023] Open
Abstract
Corneal transplantation is the only treatment for corneal endothelial blindness. However, there is an urgent need to find substitutes for corneal endothelium grafts due to the global shortage of donor corneas. An emerging research field focuses on the construction of scaffold-based corneal endothelium tissue engineering (CETE). Long-term success in CETE transplantation may be achieved by selecting the appropriate biomaterials as scaffolds of corneal endothelial cells and adding bioactive materials to promote cell activity. This article reviews the research progress of CETE biomaterials in the past 20 years, describes the key characteristics required for corneal endothelial scaffolds, and summarizes the types of materials that have been reported. Based on these, we list feasible improvement strategies for biomaterials innovation. In addition, we describe the improved techniques for the scaffolds' surface topography and drug delivery system. Some promising technologies for constructing CETE are proposed. However, some questions have not been answered yet, and clinical trials and industrialization should be carried out with caution.
Collapse
Affiliation(s)
- Miaomiao Chi
- Department of Ophthalmology, Peking University Third Hospital, Beijing 100191, China; (M.C.); (B.Y.); (Z.X.)
- Key Laboratory of Vision Loss and Restoration, Ministry of Education, Beijing 100191, China
| | - Bowei Yuan
- Department of Ophthalmology, Peking University Third Hospital, Beijing 100191, China; (M.C.); (B.Y.); (Z.X.)
- Key Laboratory of Vision Loss and Restoration, Ministry of Education, Beijing 100191, China
| | - Zijun Xie
- Department of Ophthalmology, Peking University Third Hospital, Beijing 100191, China; (M.C.); (B.Y.); (Z.X.)
- Key Laboratory of Vision Loss and Restoration, Ministry of Education, Beijing 100191, China
| | - Jing Hong
- Department of Ophthalmology, Peking University Third Hospital, Beijing 100191, China; (M.C.); (B.Y.); (Z.X.)
- Key Laboratory of Vision Loss and Restoration, Ministry of Education, Beijing 100191, China
| |
Collapse
|
4
|
Schöbel L, Boccaccini AR. A review of glycosaminoglycan-modified electrically conductive polymers for biomedical applications. Acta Biomater 2023; 169:45-65. [PMID: 37532132 DOI: 10.1016/j.actbio.2023.07.054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 06/16/2023] [Accepted: 07/26/2023] [Indexed: 08/04/2023]
Abstract
The application areas of electrically conductive polymers have been steadily growing since their discovery in the late 1970s. Recently, electrically conductive polymers have found their way into biomedicine, allowing the realization of many relevant applications ranging from bioelectronics to scaffolds for tissue engineering. Extracellular matrix components, such as glycosaminoglycans, build an important class of biomaterials that are heavily researched for biomedical applications due to their favorable properties. Due to their highly anionic character and the presence of sulfate groups in glycosaminoglycans, these biomolecules can be employed to functionalize conductive polymers, which enables the tailorability and improvement of cell-material interactions of conductive polymers. This review paper gives an overview of recent research on glycosaminoglycan-modified conductive polymers intended for biomedical applications and discusses the effect of different biological dopants on material characteristics, such as surface roughness, stiffness, and electrochemical properties. Moreover, the key findings of the biological characterization in vitro and in vivo are summarized, and remaining challenges in the field, particularly related to the modification of electrically conductive polymers with glycosaminoglycans to achieve improved functional and biological outcomes, are discussed. STATEMENT OF SIGNIFICANCE: The development of functional biomaterials based on electrically conductive polymers (CPs) for various biomedical applications, such as neural regeneration, drug delivery, or bioelectronics, has been increasingly investigated over the last decades. Recent literature has shown that changes in the synthesis procedure or the chosen dopant could adjust the resulting material characteristics. Hence, an interesting approach lies in using natural biomolecules as dopants for CPs to tailor the biological outcome. This review comprehensively summarizes the state of the art in the field of glycosaminoglycan-modified electrically conductive polymers for the first time, particularly highlighting the effect of the chosen dopant on material characteristics, such as surface morphology or stiffness, electrochemical properties, and consequently, cell-material interactions.
Collapse
Affiliation(s)
- Lisa Schöbel
- Institute of Biomaterials, Department of Material Science and Engineering, Friedrich-Alexander-University Erlangen-Nuremberg, Cauerstr. 6, 91058 Erlangen, Germany
| | - Aldo R Boccaccini
- Institute of Biomaterials, Department of Material Science and Engineering, Friedrich-Alexander-University Erlangen-Nuremberg, Cauerstr. 6, 91058 Erlangen, Germany.
| |
Collapse
|
5
|
Bosch BM, Bosch-Rue E, Perpiñan-Blasco M, Perez RA. Design of functional biomaterials as substrates for corneal endothelium tissue engineering. Regen Biomater 2022; 9:rbac052. [PMID: 35958516 PMCID: PMC9362998 DOI: 10.1093/rb/rbac052] [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: 04/19/2022] [Revised: 06/29/2022] [Accepted: 07/16/2022] [Indexed: 11/12/2022] Open
Abstract
Corneal endothelium defects are one of the leading causes of blindness worldwide. The actual treatment is transplantation, which requires the use of human cadaveric donors, but it faces several problems, such as global shortage of donors. Therefore, new alternatives are being developed and, among them, cell therapy has gained interest in the last years due to its promising results in tissue regeneration. Nevertheless, the direct administration of cells may sometimes have limited success due to the immune response, hence requiring the combination with extracellular mimicking materials. In this review, we present different methods to obtain corneal endothelial cells from diverse cell sources such as pluripotent or multipotent stem cells. Moreover, we discuss different substrates in order to allow a correct implantation as a cell sheet and to promote an enhanced cell behavior. For this reason, natural or synthetic matrixes that mimic the native environment have been developed. These matrixes have been optimized in terms of their physicochemical properties, such as stiffness, topography, composition and transparency. To further enhance the matrixes properties, these can be tuned by incorporating certain molecules that can be delivered in a sustained manner in order to enhance biological behavior. Finally, we elucidate future directions for corneal endothelial regeneration, such as 3D printing, in order to obtain patient-specific substrates.
Collapse
Affiliation(s)
- Begona M Bosch
- Universitat Internacional de Catalunya Bioengineering Institute of Technology (BIT), , Sant Cugat del Valles, Barcelona, 08195, Spain
| | - Elia Bosch-Rue
- Universitat Internacional de Catalunya Bioengineering Institute of Technology (BIT), , Sant Cugat del Valles, Barcelona, 08195, Spain
| | - Marina Perpiñan-Blasco
- Universitat Internacional de Catalunya Bioengineering Institute of Technology (BIT), , Sant Cugat del Valles, Barcelona, 08195, Spain
| | - Roman A Perez
- Universitat Internacional de Catalunya Bioengineering Institute of Technology (BIT), , Sant Cugat del Valles, Barcelona, 08195, Spain
| |
Collapse
|
6
|
Sang S, Yan Y, Shen Z, Cao Y, Duan Q, He M, Zhang Q. Photo-crosslinked hydrogels for tissue engineering of corneal epithelium. Exp Eye Res 2022; 218:109027. [PMID: 35276182 DOI: 10.1016/j.exer.2022.109027] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 02/28/2022] [Accepted: 03/02/2022] [Indexed: 11/04/2022]
Abstract
The vast majority of patients with corneal blindness cannot recover their vision due to the serious shortage of donor cornea. However, the technology to construct a feasible corneal substitute is a promising treatment method for corneal blindness. In this paper, methacrylated gelatin (GelMA)-methacrylated hyaluronic acid (HAMA) double network (GHDN) hydrogels were prepared by modifying gelatin and hyaluronic acid with methacrylate anhydride (MA). GHDN hydrogel was compared with GelMA single network and HAMA single network hydrogels through characterization experiments of mechanical properties, optical properties, hydrophilicity and in-situ degradation in vitro. At the same time, the biocompatibility of hydrogel was tested by inoculating rabbit corneal epithelial cells (CEpCs) epidermal cells on hydrogels using CCK-8 test, live/dead staining, immunofluorescence staining and qRT-PCR. It was found that the GHDN hydrogel has optical transparency in the visible region, and its mechanical properties are better than those of GelMA and HAMA hydrogels, and its hydrophilicity is similar to that of normal human corneas. The results of in vitro hydrogel culture of CEpCs showed that the proliferation of CEpCs on GHDN hydrogel was two times higher than that of HAMA hydrogel, and the expression of specific marker Cytokeratin 3 (CK3) and Cytokeratin 12 (CK12) could be better maintained on GHDN hydrogel. All the experimental results proved that GHDN hydrogel has good physical properties and biocompatibility and is a potential candidate for corneal tissue engineering scaffolds.
Collapse
Affiliation(s)
- Shengbo Sang
- Micro Nano System Research Center, College of Information and Computer & Key Lab of Advanced Transducers and Intelligent Control System of the Ministry of Education, Taiyuan University of Technology, Taiyuan, 030024, China
| | - Yayun Yan
- Micro Nano System Research Center, College of Information and Computer & Key Lab of Advanced Transducers and Intelligent Control System of the Ministry of Education, Taiyuan University of Technology, Taiyuan, 030024, China
| | - Zhizhong Shen
- Micro Nano System Research Center, College of Information and Computer & Key Lab of Advanced Transducers and Intelligent Control System of the Ministry of Education, Taiyuan University of Technology, Taiyuan, 030024, China
| | - Yanyan Cao
- Micro Nano System Research Center, College of Information and Computer & Key Lab of Advanced Transducers and Intelligent Control System of the Ministry of Education, Taiyuan University of Technology, Taiyuan, 030024, China; College of Information Science and Engineering, Hebei North University, Zhangjiakou, 075000, China
| | - Qianqian Duan
- Micro Nano System Research Center, College of Information and Computer & Key Lab of Advanced Transducers and Intelligent Control System of the Ministry of Education, Taiyuan University of Technology, Taiyuan, 030024, China
| | - Min He
- Department of Ophthalmology, The Second Hospital of Shanxi Medical University, Taiyuan, 030001, China.
| | - Qiang Zhang
- Micro Nano System Research Center, College of Information and Computer & Key Lab of Advanced Transducers and Intelligent Control System of the Ministry of Education, Taiyuan University of Technology, Taiyuan, 030024, China.
| |
Collapse
|
7
|
Mishan MA, Balagholi S, Chamani T, Feizi S, Soheili ZS, Rezaei Kanavi M. Potential of a novel scaffold composed of human platelet lysate and fibrin for human corneal endothelial cells. Cell Tissue Bank 2021; 23:171-183. [PMID: 33939123 DOI: 10.1007/s10561-021-09931-x] [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: 11/30/2020] [Accepted: 03/08/2021] [Indexed: 12/13/2022]
Abstract
Cell-based therapies have been emerged to find innovative solutions for corneal endothelial dysfunction. The aim of this study is to investigate the suitability of a blended scaffold containing human platelet lysate (HPL) and fibrin not only for cultivating human corneal endothelial cells (HCECs) but also for serving as a scaffold for the respected cells. We isolated HCECs from human donors and encapsulated the cells with three concentrations of HPL/Fibrin scaffold, namely HPL/Fibrin 1, HPL/Fibrin 2 and HPL/Fibrin 3, by adding 28.9, 57.8 and 86.7 mg/dl of fibrinogen to HPL to obtain a final percentage of 10, 20 and 30 % of fibrinogen, respectively. SEM imaging and swelling test were done to characterize the scaffolds. Cell viability assay and cell counting were performed on the cells. HCECs were characterized by morphology and immunocytochemistry. SEM imaging on freeze-dried scaffolds showed higher porosity of HPL/Fibrin 1 and HPL/Fibrin 2 than HPL/Fibrin 3, but larger pores were observed only in HPL/Fibrin 1. Cellular attachment and morphology on HPL/Fibrin 1 were appropriate by SEM imaging. A higher swelling rate was observed in HPL/Fibrin 1. After 3 and 5 days, higher numbers of cells were observed specifically in HPL/Fibrin 1. A higher expression of Na+/K+-ATPase, ZO-1 and vimentin proteins was detected in the HPL/Fibrin 1-cultured HCECs as compared with control (no scaffold). HPL/Fibrin can be used as a suitable scaffold for HCECs while preserving the cells viability. Further investigations are necessitated to approve the beneficial effects of the suggested scaffold for delivering and transplantation of cultivated HCECs into the anterior chamber of the eye.
Collapse
Affiliation(s)
- Mohammad Amir Mishan
- Ocular Tissue Engineering Research Center, Research Institute for Ophthalmology and Vision Science, Shahid Beheshti University of Medical Sciences, No.23, Paidarfard Street, Boostan 9 Street, Pasdaran Avenue, 1666673111, Tehran, Iran
| | - Sahar Balagholi
- Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran
| | | | - Sepehr Feizi
- Ophthalmic Research Center, Research Institute for Ophthalmology and Vision Science, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | | | - Mozhgan Rezaei Kanavi
- Ocular Tissue Engineering Research Center, Research Institute for Ophthalmology and Vision Science, Shahid Beheshti University of Medical Sciences, No.23, Paidarfard Street, Boostan 9 Street, Pasdaran Avenue, 1666673111, Tehran, Iran.
| |
Collapse
|
8
|
Mahdavi SS, Abdekhodaie MJ, Mashayekhan S, Baradaran-Rafii A, Djalilian AR. Bioengineering Approaches for Corneal Regenerative Medicine. Tissue Eng Regen Med 2020; 17:567-593. [PMID: 32696417 PMCID: PMC7373337 DOI: 10.1007/s13770-020-00262-8] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Accepted: 04/06/2020] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Since the cornea is responsible for transmitting and focusing light into the eye, injury or pathology affecting any layer of the cornea can cause a detrimental effect on visual acuity. Aging is also a reason for corneal degeneration. Depending on the level of the injury, conservative therapies and donor tissue transplantation are the most common treatments for corneal diseases. Not only is there a lack of donor tissue and risk of infection/rejection, but the inherent ability of corneal cells and layers to regenerate has led to research in regenerative approaches and treatments. METHODS In this review, we first discussed the anatomy of the cornea and the required properties for reconstructing layers of the cornea. Regenerative approaches are divided into two main categories; using direct cell/growth factor delivery or using scaffold-based cell delivery. It is expected delivered cells migrate and integrate into the host tissue and restore its structure and function to restore vision. Growth factor delivery also has shown promising results for corneal surface regeneration. Scaffold-based approaches are categorized based on the type of scaffold, since it has a significant impact on the efficiency of regeneration, into the hydrogel and non-hydrogel based scaffolds. Various types of cells, biomaterials, and techniques are well covered. RESULTS The most important characteristics to be considered for biomaterials in corneal regeneration are suitable mechanical properties, biocompatibility, biodegradability, and transparency. Moreover, a curved shape structure and spatial arrangement of the fibrils have been shown to mimic the corneal extracellular matrix for cells and enhance cell differentiation. CONCLUSION Tissue engineering and regenerative medicine approaches showed to have promising outcomes for corneal regeneration. However, besides proper mechanical and optical properties, other factors such as appropriate sterilization method, storage, shelf life and etc. should be taken into account in order to develop an engineered cornea for clinical trials.
Collapse
Affiliation(s)
- S Sharareh Mahdavi
- Department of Chemical and Petroleum Engineering, Sharif University of Technology, 1393 Azadi Ave., Tehran, 11365-11155, Iran
| | - Mohammad J Abdekhodaie
- Department of Chemical and Petroleum Engineering, Sharif University of Technology, 1393 Azadi Ave., Tehran, 11365-11155, Iran.
| | - Shohreh Mashayekhan
- Department of Chemical and Petroleum Engineering, Sharif University of Technology, 1393 Azadi Ave., Tehran, 11365-11155, Iran
| | - Alireza Baradaran-Rafii
- Ophthalmic Research Center, Shahid Beheshti University of Medical Sciences, SBUMS, Arabi Ave, Daneshjoo Blvd, Velenjak, Tehran, 19839-63113, Iran
| | - Ali R Djalilian
- Department of Ophthalmology and Visual Sciences, University of Illinois at Chicago, 1200 W Harrison St, Chicago, IL, 60607, USA
| |
Collapse
|
9
|
Effect of freezing and thawing on the biomechanical characteristics of porcine ocular tissues. J Biomech 2019; 87:93-99. [PMID: 30876736 DOI: 10.1016/j.jbiomech.2019.02.024] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Revised: 12/25/2018] [Accepted: 02/23/2019] [Indexed: 12/13/2022]
Abstract
PURPOSE To evaluate the effect of freezing and thawing on the biomechanical properties of ex-vivo porcine ocular tissue. METHODS Thirty-six porcine eyes (18 pairs) were obtained fresh from a local abattoir and split into two groups of nine pairs to study the effect of storage at -20 °C and -80 °C. A randomly-selected eye from each pair (Control Group, CG) was tested fresh while the fellow eyes were frozen for 14 days, either at -20 °C and -80 °C (Frozen Group, FG) before thawing and testing. Seventy-two strips were extracted from the corneas and scleras of eye globes and subjected to uniaxial tension tests under loads up to 1.0 N. Following five preconditioning cycles, the load and elongation data obtained experimentally were analysed to derive the tissue's stress-strain and tangent modulus-strain behaviour. RESULTS Corneal tissue subjected to freezing at -20 °C exhibited significant increases in tangent modulus (mechanical stiffness) by 13 ± 17% (p = 0.003) at 1% strain and 14 ± 12% (p < 0.001) at 2% strain. In contrast, the increases in corneal stiffness at -80 °C were insignificant (6 ± 14%, p = 0.099 at 1% strain, 6 ± 15%, p = 0.091 at 2% strain). The corresponding increases in tangent modulus in the sclera were all insignificant (for -20 °C: 4 ± 14%, p = 0.265 at 1% strain, 3 ± 9%, p = 0.186 at 2% strain; for -80 °C: 3 ± 18%, p = 0.537 at 1% strain and 3 ± 18%, p = 0.491 at 2% strain). CONCLUSIONS The study provided evidence that freezing and thawing led to insignificant changes in ocular tissue stiffness except in corneal tissue that was frozen at -20 °C.
Collapse
|
10
|
The temperature-responsive hydroxybutyl chitosan hydrogels with polydopamine coating for cell sheet transplantation. Int J Biol Macromol 2018; 120:152-158. [DOI: 10.1016/j.ijbiomac.2018.08.015] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Revised: 07/20/2018] [Accepted: 08/04/2018] [Indexed: 02/07/2023]
|
11
|
Kim JI, Kim JY, Park CH. Fabrication of transparent hemispherical 3D nanofibrous scaffolds with radially aligned patterns via a novel electrospinning method. Sci Rep 2018; 8:3424. [PMID: 29467436 PMCID: PMC5821851 DOI: 10.1038/s41598-018-21618-0] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Accepted: 02/07/2018] [Indexed: 12/13/2022] Open
Abstract
Tissue engineering has significantly contributed to the development of optimal treatments for individual injury sites based on their unique functional and histologic properties. Human organs and tissue have three-dimensional (3D) morphologies; for example, the morphology of the eye is a spherical shape. However, most conventional electrospinning equipment is only capable of fabricating a two-dimensional (2D) structured fibrous scaffold and no report is available on a 3D electrospinning method to fabricate a hemispherical scaffold to mimic the native properties of the cornea, including microscopic to macroscopic morphology and transparency. We proposed a novel electrospinning method using a single nonconductive hemispherical device and a metal pin. A designed peg-top shaped collector, a hemispherical nonconductive device with a metal pin in the center and copper wire forming a circle around at the edge was attached to a conventional conductive collector. A 3D hemispherical transparent scaffold with radially aligned nanofibers was successfully fabricated with the designed peg-top collector. In summary, our fabricated 3D electrospun scaffold is expected to be suitable for the treatment of injuries of ocular tissues owing to the hemispherical shape and radially aligned nanofibers which can guide the direction of the main collagen and cellular actin filament in the extracellular matrix.
Collapse
Affiliation(s)
- Jeong In Kim
- Department of Bionanosystem Engineering, Graduate School, Chonbuk National University, Jeonju, 561-756, Republic of Korea
| | - Ju Yeon Kim
- Division of Mechanical Design Engineering, College of Engineering, Chonbuk National University, Jeonju, 561-756, Republic of Korea
| | - Chan Hee Park
- Department of Bionanosystem Engineering, Graduate School, Chonbuk National University, Jeonju, 561-756, Republic of Korea.
- Division of Mechanical Design Engineering, College of Engineering, Chonbuk National University, Jeonju, 561-756, Republic of Korea.
| |
Collapse
|
12
|
Celikkin N, Rinoldi C, Costantini M, Trombetta M, Rainer A, Święszkowski W. Naturally derived proteins and glycosaminoglycan scaffolds for tissue engineering applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 78:1277-1299. [PMID: 28575966 DOI: 10.1016/j.msec.2017.04.016] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Revised: 04/02/2017] [Accepted: 04/03/2017] [Indexed: 12/25/2022]
Abstract
Tissue engineering (TE) aims to mimic the complex environment where organogenesis takes place using advanced materials to recapitulate the tissue niche. Cells, three-dimensional scaffolds and signaling factors are the three main and essential components of TE. Over the years, materials and processes have become more and more sophisticated, allowing researchers to precisely tailor the final chemical, mechanical, structural and biological features of the designed scaffolds. In this review, we will pose the attention on two specific classes of naturally derived polymers: fibrous proteins and glycosaminoglycans (GAGs). These materials hold great promise for advances in the field of regenerative medicine as i) they generally undergo a fast remodeling in vivo favoring neovascularization and functional cells organization and ii) they elicit a negligible immune reaction preventing severe inflammatory response, both representing critical requirements for a successful integration of engineered scaffolds with the host tissue. We will discuss the recent achievements attained in the field of regenerative medicine by using proteins and GAGs, their merits and disadvantages and the ongoing challenges to move the current concepts to practical clinical application.
Collapse
Affiliation(s)
- Nehar Celikkin
- Warsaw University of Technology, Faculty of Material Science and Engineering, 141 Woloska str., 02-507 Warsaw, Poland
| | - Chiara Rinoldi
- Warsaw University of Technology, Faculty of Material Science and Engineering, 141 Woloska str., 02-507 Warsaw, Poland
| | - Marco Costantini
- Tissue Engineering Unit, Department of Engineering, Università Campus Bio-Medico di Roma, Via Alvaro del Portillo 21, 00128 Rome, Italy
| | - Marcella Trombetta
- Tissue Engineering Unit, Department of Engineering, Università Campus Bio-Medico di Roma, Via Alvaro del Portillo 21, 00128 Rome, Italy
| | - Alberto Rainer
- Tissue Engineering Unit, Department of Engineering, Università Campus Bio-Medico di Roma, Via Alvaro del Portillo 21, 00128 Rome, Italy
| | - Wojciech Święszkowski
- Warsaw University of Technology, Faculty of Material Science and Engineering, 141 Woloska str., 02-507 Warsaw, Poland.
| |
Collapse
|