1
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Sandhoff CA, Loewen A, Kuhn Y, Vidal HT, Ruetten S, Jockenhoevel S. The Challenge of E-Spinning Sub-Millimeter Tubular Scaffolds-A Design-of-Experiments Study for Fiber Yield Improvement. Polymers (Basel) 2024; 16:1475. [PMID: 38891422 PMCID: PMC11174914 DOI: 10.3390/polym16111475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2024] [Revised: 05/13/2024] [Accepted: 05/21/2024] [Indexed: 06/21/2024] Open
Abstract
In tissue engineering, electrospinning has gained significant interest due to its highly porous structure with an excellent surface area to volume ratio and fiber diameters that can mimic the structure of the extracellular matrix. Bioactive substances such as growth factors and drugs are easily integrated. In many applications, there is an important need for small tubular structures (I.D. < 1 mm). However, fabricating sub-millimeter structures is challenging as it reduces the collector area and increases the disturbing factors, leading to significant fiber loss. This study aims to establish a reliable and reproducible electrospinning process for sub-millimeter tubular structures with minimized material loss. Influencing factors were analyzed, and disturbance factors were removed before optimizing control variables through the design-of-experiments method. Structural and morphological characterization was performed, including the yield, thickness, and fiber arrangement of the scaffold. We evaluated the electrospinning process to enhance the manufacturing efficiency and reduce material loss. The results indicated that adjusting the voltage settings and polarity significantly increased the fiber yield from 8% to 94%. Variations in the process parameters also affected the scaffold thickness and homogeneity. The results demonstrate the complex relationship between the process parameters and provide valuable insights for optimizing electrospinning, particularly for the cost-effective and reproducible production of small tubular diameters.
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Affiliation(s)
- Cilia A. Sandhoff
- Department of Biohybrid & Medical Textiles (BioTex), AME Institute of Applied Medical Engineering, Helmholtz Institute, RWTH Aachen University, Forckenbeckstr. 55, 52074 Aachen, Germany; (C.A.S.); (A.L.); (Y.K.)
| | - Alexander Loewen
- Department of Biohybrid & Medical Textiles (BioTex), AME Institute of Applied Medical Engineering, Helmholtz Institute, RWTH Aachen University, Forckenbeckstr. 55, 52074 Aachen, Germany; (C.A.S.); (A.L.); (Y.K.)
| | - Yasmin Kuhn
- Department of Biohybrid & Medical Textiles (BioTex), AME Institute of Applied Medical Engineering, Helmholtz Institute, RWTH Aachen University, Forckenbeckstr. 55, 52074 Aachen, Germany; (C.A.S.); (A.L.); (Y.K.)
| | - Haude-Tukua Vidal
- Laboratoire de Physique et Mécanique Textiles (LPMT), École Nationale Supérieure d’Ingénieurs Sud-Alsace, 12 Rue des Frères Lumière, 68 093 Mulhouse, France
| | - Stephan Ruetten
- Electron Microscopy Facility, University Hospital Aachen, Pauwelsstr. 30, 52074 Aachen, Germany;
| | - Stefan Jockenhoevel
- Department of Biohybrid & Medical Textiles (BioTex), AME Institute of Applied Medical Engineering, Helmholtz Institute, RWTH Aachen University, Forckenbeckstr. 55, 52074 Aachen, Germany; (C.A.S.); (A.L.); (Y.K.)
- Aachen-Maastricht Institute for Biobased Materials (AMIBM), Maastricht University, Urmonderbaan 22, 6167 RD Geleen, The Netherlands
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2
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Luo Y, Chen Y, Gu Z, Ni R, Feng P, Hu Z, Song L, Shen X, Gu C, Li J, Du T, Yang L, Zhang H, Zhu Y. Engineered muscle from micro-channeled PEG scaffold with magnetic Fe 3O 4 fixation towards accelerating esophageal muscle repair. Mater Today Bio 2023; 23:100853. [PMID: 38024845 PMCID: PMC10663962 DOI: 10.1016/j.mtbio.2023.100853] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 10/25/2023] [Accepted: 10/31/2023] [Indexed: 12/01/2023] Open
Abstract
Engineered scaffolds are used for repairing damaged esophagus to allow the precise alignment and movement of smooth muscle for peristalsis. However, most of these scaffolds focus solely on inducing cell alignment through directional apparatus, often overlooking the promotion of muscle tissue formation and causing reduced esophageal muscle repair effectiveness. To address this issue, we first introduced aligned nano-ferroferric oxide (Fe3O4) assemblies on a micropatterned poly(ethylene glycol) (PEG) hydrogel to form micro-/nano-stripes. Further modification using a gold coating was found to enhance cellular adhesion, orientation and organization within these micro-/nano-stripes, which consequently prevented excessive adhesion of smooth muscle cells (SMCs) to the thin PEG ridges, thereby effectively confining the cells to the Fe3O4-laid channels. This architectural design promotes the alignment of the cytoskeleton and elongation of actin filaments, leading to the organized formation of muscle bundles and a tendency for SMCs to adopt synthetic phenotypes. Muscle patches are harvested from the micro-/nano-stripes and transplanted into a rat esophageal defect model. In vivo experiments demonstrate the exceptional viability of these muscle patches and their ability to accelerate the regeneration of esophageal tissue. Overall, this study presents an efficient strategy for constructing muscle patches with directional alignment and muscle bundle formation of SMCs, holding significant promise for muscle tissue regeneration.
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Affiliation(s)
- Yang Luo
- Health Science Center, Ningbo University, Ningbo, 315211, China
| | - Yichen Chen
- Ningbo Women and Children's Hospital, Ningbo, 315031, China
| | - Zhaofeng Gu
- Laboratory of Infrared Materials and Devices, Advanced Technology Research Institute, Ningbo University, Ningbo, 315211, China
| | - Renhao Ni
- Health Science Center, Ningbo University, Ningbo, 315211, China
| | - Peipei Feng
- Ningbo Institute of Innovation for Combined Medicine and Engineering, Ningbo Medical Centre Lihuili Hospital, Ningbo, 315010, China
| | - Zeming Hu
- Health Science Center, Ningbo University, Ningbo, 315211, China
| | - Lei Song
- Ningbo Women and Children's Hospital, Ningbo, 315031, China
| | - Xiang Shen
- Laboratory of Infrared Materials and Devices, Advanced Technology Research Institute, Ningbo University, Ningbo, 315211, China
| | - Chenjie Gu
- Laboratory of Infrared Materials and Devices, Advanced Technology Research Institute, Ningbo University, Ningbo, 315211, China
| | - Jiajie Li
- The First Affiliated Hospital of Ningbo University, Ningbo, 315010, China
| | - Tianyu Du
- Health Science Center, Ningbo University, Ningbo, 315211, China
| | - Lu Yang
- The First Affiliated Hospital of Ningbo University, Ningbo, 315010, China
| | - Hua Zhang
- Health Science Center, Ningbo University, Ningbo, 315211, China
- State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou, 310027, China
| | - Yabin Zhu
- Health Science Center, Ningbo University, Ningbo, 315211, China
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3
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Li Y, Wu J, He C, He H, Xie M, Yao K, He J, Duan Y, Zhaung L, Wang P, He Y. 3D Prestress Bioprinting of Directed Tissues. Adv Healthc Mater 2023; 12:e2301487. [PMID: 37249520 DOI: 10.1002/adhm.202301487] [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: 05/09/2023] [Indexed: 05/31/2023]
Abstract
Many mammalian tissues adopt a specific cellular arrangement under stress stimulus that enables their unique function. However, conventional 3D encapsulation often fails to recapitulate the complexities of these arrangements, thus motivating the need for advanced cellular arrangement approaches. Here, an original 3D prestress bioprinting approach of directed tissues under the synergistic effect of static sustained tensile stress and molecular chain orientation, with an aid of slow crosslinking in bioink, is developed. The semi-crosslinking state of the designed bioink exhibits excellent elasticity for applying stress on the cells during the sewing-like process. After bioprinting, the bioink gradually forms complete crosslinking and keeps the applied stress force to induce cell-orientated growth. More importantly, multiple cell types can be arranged directionally by this approach, while the internal stress of the hydrogel filament is also adjustable. In addition, compared with conventional bioprinted skin, the 3D prestress bioprinted skin results in a better wound healing effect due to promoting the angiogenesis of granulation tissue. This study provides a prospective strategy to engineer skeletal muscles, as well as tendons, ligaments, vascular networks, or combinations thereof in the future.
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Affiliation(s)
- Yuanrong Li
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou, 310027, China
- Cancer Center, Zhejiang University, Hangzhou, Zhejiang, 310058, China
- Key Laboratory of 3D Printing Process and Equipment of Zhejiang Province, College of Mechanical Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Jianguo Wu
- Biosensor National Special Laboratory, Key Laboratory for Biomedical Engineering of Education Ministry, Department of Biomedical Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Chuanjiang He
- Biosensor National Special Laboratory, Key Laboratory for Biomedical Engineering of Education Ministry, Department of Biomedical Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Honghui He
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou, 310027, China
- Cancer Center, Zhejiang University, Hangzhou, Zhejiang, 310058, China
- Key Laboratory of 3D Printing Process and Equipment of Zhejiang Province, College of Mechanical Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Mingjun Xie
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou, 310027, China
- Cancer Center, Zhejiang University, Hangzhou, Zhejiang, 310058, China
- Key Laboratory of 3D Printing Process and Equipment of Zhejiang Province, College of Mechanical Engineering, Zhejiang University, Hangzhou, 310027, China
- Plastic and Reconstructive Surgery Center, Department of Plastic and Reconstructive Surgery, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, 310014, China
| | - Ke Yao
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou, 310027, China
- Cancer Center, Zhejiang University, Hangzhou, Zhejiang, 310058, China
- Key Laboratory of 3D Printing Process and Equipment of Zhejiang Province, College of Mechanical Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Jing He
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou, 310027, China
- Cancer Center, Zhejiang University, Hangzhou, Zhejiang, 310058, China
- Key Laboratory of 3D Printing Process and Equipment of Zhejiang Province, College of Mechanical Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Yan Duan
- Biosensor National Special Laboratory, Key Laboratory for Biomedical Engineering of Education Ministry, Department of Biomedical Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Liujing Zhaung
- Biosensor National Special Laboratory, Key Laboratory for Biomedical Engineering of Education Ministry, Department of Biomedical Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Ping Wang
- Biosensor National Special Laboratory, Key Laboratory for Biomedical Engineering of Education Ministry, Department of Biomedical Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Yong He
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou, 310027, China
- Cancer Center, Zhejiang University, Hangzhou, Zhejiang, 310058, China
- Key Laboratory of 3D Printing Process and Equipment of Zhejiang Province, College of Mechanical Engineering, Zhejiang University, Hangzhou, 310027, China
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4
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Wang Q, Wang J, Tokhtaeva E, Li Z, Martín MG, Ling XB, Dunn JC. An Engineered Living Intestinal Muscle Patch Produces Macroscopic Contractions that can Mix and Break Down Artificial Intestinal Contents. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2207255. [PMID: 36779454 PMCID: PMC10101936 DOI: 10.1002/adma.202207255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 01/13/2023] [Indexed: 06/03/2023]
Abstract
The intestinal muscle layers execute various gut wall movements to achieve controlled propulsion and mixing of intestinal content. Engineering intestinal muscle layers with complex contractile function is critical for developing bioartificial intestinal tissue to treat patients with short bowel syndrome. Here, the first demonstration of a living intestinal muscle patch capable of generating three distinct motility patterns and displaying multiple digesta manipulations is reported. Assessment of contractility, cellular morphology, and transcriptome profile reveals that successful generation of the contracting muscle patch relies on both biological factors in a serum-free medium and environmental cues from an elastic electrospun gelatin scaffold. By comparing gene-expression patterns among samples, it is shown that biological factors from the medium strongly affect ion-transport activities, while the scaffold unexpectedly regulates cell-cell communication. Analysis of ligandreceptor interactome identifies scaffold-driven changes in intercellular communication, and 78% of the upregulated ligand-receptor interactions are involved in the development and function of enteric neurons. The discoveries highlight the importance of combining biomolecular and biomaterial approaches for tissue engineering. The living intestinal muscle patch represents a pivotal advancement for building functional replacement intestinal tissue. It offers a more physiological model for studying GI motility and for preclinical drug discovery.
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Affiliation(s)
- Qianqian Wang
- Division of Pediatric Surgery, Departments of Surgery and Bioengineering, Stanford University School of Medicine, Stanford, California 94305, USA
| | - Jiafang Wang
- Division of Pediatric Gastroenterology and Nutrition, Department of Pediatrics, David Geffen School of Medicine at UCLA, Los Angeles, California 90095, USA
| | - Elmira Tokhtaeva
- Division of Pediatric Gastroenterology and Nutrition, Department of Pediatrics, David Geffen School of Medicine at UCLA, Los Angeles, California 90095, USA
| | - Zhen Li
- Division of Pediatric Surgery, Departments of Surgery and Bioengineering, Stanford University School of Medicine, Stanford, California 94305, USA
| | - Martín G. Martín
- Division of Pediatric Gastroenterology and Nutrition, Department of Pediatrics, David Geffen School of Medicine at UCLA, Los Angeles, California 90095, USA
| | - Xuefeng B. Ling
- Division of Pediatric Surgery, Departments of Surgery and Bioengineering, Stanford University School of Medicine, Stanford, California 94305, USA
| | - James C.Y. Dunn
- Division of Pediatric Surgery, Departments of Surgery and Bioengineering, Stanford University School of Medicine, Stanford, California 94305, USA
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5
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Topographic Orientation of Scaffolds for Tissue Regeneration: Recent Advances in Biomaterial Design and Applications. Biomimetics (Basel) 2022; 7:biomimetics7030131. [PMID: 36134935 PMCID: PMC9496066 DOI: 10.3390/biomimetics7030131] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Revised: 08/30/2022] [Accepted: 09/08/2022] [Indexed: 11/17/2022] Open
Abstract
Tissue engineering to develop alternatives for the maintenance, restoration, or enhancement of injured tissues and organs is gaining more and more attention. In tissue engineering, the scaffold used is one of the most critical elements. Its characteristics are expected to mimic the native extracellular matrix and its unique topographical structures. Recently, the topographies of scaffolds have received increasing attention, not least because different topographies, such as aligned and random, have different repair effects on various tissues. In this review, we have focused on various technologies (electrospinning, directional freeze-drying, magnetic freeze-casting, etching, and 3-D printing) to fabricate scaffolds with different topographic orientations, as well as discussed the physicochemical (mechanical properties, porosity, hydrophilicity, and degradation) and biological properties (morphology, distribution, adhesion, proliferation, and migration) of different topographies. Subsequently, we have compiled the effect of scaffold orientation on the regeneration of vessels, skin, neural tissue, bone, articular cartilage, ligaments, tendons, cardiac tissue, corneas, skeletal muscle, and smooth muscle. The compiled information in this review will facilitate the future development of optimal topographical scaffolds for the regeneration of certain tissues. In the majority of tissues, aligned scaffolds are more suitable than random scaffolds for tissue repair and regeneration. The underlying mechanism explaining the various effects of aligned and random orientation might be the differences in “contact guidance”, which stimulate certain biological responses in cells.
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6
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Muthukrishnan L. An overview on electrospinning and its advancement toward hard and soft tissue engineering applications. Colloid Polym Sci 2022; 300:875-901. [PMID: 35765603 PMCID: PMC9226287 DOI: 10.1007/s00396-022-04997-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 06/02/2022] [Accepted: 06/06/2022] [Indexed: 11/30/2022]
Abstract
One of the emerging technologies of the recent times harboring nanotechnology to fabricate nanofibers for various biomedical and environmental applications are electrospinning (nanofiber technology). Their relative ease in use, simplicity, functionality and diversity has surpassed the pitfalls encountered with the conventional method of generating fibers. This review aims to provide an overview of electrospinning, principle, methods, feed materials, and applications toward tissue engineering. To begin with, evolution of electrospinning and its typical apparatus have been briefed. Simultaneously, discussion on the production of nanofibers with diversified feed materials such as polymers, small molecules, colloids, and nanoparticles and its transformation into a powerful technology has been dealt with. Further, highlights on the application of nanofibers in tissue engineering and the commercialized products developed using nanofiber technology have been summed up. With this rapidly emerging technology, there would be a great demand pertaining to scalability and environmental challenge toward tissue engineering applications.
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Affiliation(s)
- Lakshmipathy Muthukrishnan
- Department of Conservative Dentistry & Endodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Poonamallee High Road, Chennai, Tamil Nadu 600 077 India
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7
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Mitxelena-Iribarren O, Olaizola C, Arana S, Mujika M. Versatile membrane-based microfluidic platform for in vitro drug diffusion testing mimicking in vivo environments. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2021; 39:102462. [PMID: 34592426 DOI: 10.1016/j.nano.2021.102462] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 07/22/2021] [Accepted: 08/16/2021] [Indexed: 01/18/2023]
Abstract
Mimicking the diffusion that drugs suffer through different body tissues before reaching their target is a challenge. In this work, a versatile membrane-based microfluidic platform was developed to allow for the identification of drugs that would keep their cytotoxic properties after diffusing through such a barrier. As an application case, this paper reports on a microfluidic device capable of mimicking the diffusion that free or encapsulated anticancer drugs would suffer in the intestine before reaching the bloodstream. It not only presents the successful fabrication results for the platform but also demonstrates the significant effect that the analyzed drugs have over the viability of osteosarcoma cells. This intestine-like microfluidic platform works as a tool to allow for the identification of drugs whose cytotoxic performance remains effective enough once they enter the bloodstream. Therefore, it allows for the prediction of the best treatment available for each patient in the battle against cancer.
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Affiliation(s)
- Oihane Mitxelena-Iribarren
- CEIT-Basque Research and Technology Alliance (BRTA), Donostia-San Sebastián, Spain; Universidad de Navarra, Tecnun, Donostia-San Sebastián, Spain.
| | | | - Sergio Arana
- CEIT-Basque Research and Technology Alliance (BRTA), Donostia-San Sebastián, Spain; Universidad de Navarra, Tecnun, Donostia-San Sebastián, Spain
| | - Maite Mujika
- CEIT-Basque Research and Technology Alliance (BRTA), Donostia-San Sebastián, Spain; Universidad de Navarra, Tecnun, Donostia-San Sebastián, Spain
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8
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Li MX, Li L, Zhou SY, Cao JH, Liang WH, Tian Y, Shi XT, Yang XB, Wu DY. A biomimetic orthogonal-bilayer tubular scaffold for the co-culture of endothelial cells and smooth muscle cells. RSC Adv 2021; 11:31783-31790. [PMID: 35496878 PMCID: PMC9041441 DOI: 10.1039/d1ra04472a] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Accepted: 09/17/2021] [Indexed: 11/21/2022] Open
Abstract
In blood vessels, endothelial cells (ECs) grow along the direction of blood flow, while smooth muscle cells (SMCs) grow circumferentially along the vessel wall. To mimic this structure, a polycaprolactone (PCL) tubular scaffold with orthogonally oriented bilayer nanofibers was prepared via electrospinning and winding. ECs were cultured on the inner layer of the scaffold with axial nanofibers and SMCs were cultured on the outer layer of the scaffold with circumferential nanofibers. Fluorescence images of the F-actin distribution of ECs and SMCs indicated that cells adhered, stretched, and proliferated in an oriented manner on the scaffold. Moreover, layers of ECs and SMCs formed on the scaffold after one month of incubation. The expression levels of platelet-endothelial cell adhesion molecule 1 (PECAM-1) and a contractile SMC phenotype marker in the EC/SMC co-culture system were much higher than those in individual culture systems, thus demonstrating that the proposed biomimetic scaffold promoted the intercellular junction of ECs and preserved the contractile phenotype of SMCs. To mimic blood vessels, a polycaprolactone tubular scaffold was prepared via electrospinning and winding. Endothelial cells were cultured on the inner layer with axial nanofibers and smooth muscle cells were cultured on the outer layer with circumferential nanofibers.![]()
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Affiliation(s)
- Mei-Xi Li
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences Beijing 100190 P. R. China .,University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Lei Li
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences Beijing 100190 P. R. China .,CAS Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Si-Yuan Zhou
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences Beijing 100190 P. R. China .,University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Jian-Hua Cao
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Wei-Hua Liang
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Ye Tian
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences Beijing 100190 P. R. China .,Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Xue-Tao Shi
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology Guangzhou 510006 P. R. China
| | - Xiu-Bin Yang
- Department of Cardiac Surgery, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing Anzhen Hospital, Capital Medical University Beijing 100029 P. R. China
| | - Da-Yong Wu
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences Beijing 100190 P. R. China
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9
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Biagini F, Calvigioni M, Lapomarda A, Vecchione A, Magliaro C, De Maria C, Montemurro F, Celandroni F, Mazzantini D, Mattioli-Belmonte M, Ghelardi E, Vozzi G. A novel 3D in vitro model of the human gut microbiota. Sci Rep 2020; 10:21499. [PMID: 33299026 PMCID: PMC7725811 DOI: 10.1038/s41598-020-78591-w] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Accepted: 11/23/2020] [Indexed: 12/13/2022] Open
Abstract
Clinical trials and animal studies on the gut microbiota are often limited by the difficult access to the gut, restricted possibility of in vivo monitoring, and ethical issues. An easily accessible and monitorable in vitro model of the gut microbiota represents a valid tool for a wider comprehension of the mechanisms by which microbes interact with the host and with each other. Herein, we present a novel and reliable system for culturing the human gut microbiota in vitro. An electrospun gelatin structure was biofabricated as scaffold for microbial growth. The efficiency of this structure in supporting microbial proliferation and biofilm formation was initially assessed for five microbes commonly inhabiting the human gut. The human fecal microbiota was then cultured on the scaffolds and microbial biofilms monitored by confocal laser and scanning electron microscopy and quantified over time. Metagenomic analyses and Real-Time qPCRs were performed to evaluate the stability of the cultured microbiota in terms of qualitative and quantitative composition. Our results reveal the three-dimensionality of the scaffold-adhered microbial consortia that maintain the bacterial biodiversity and richness found in the original sample. These findings demonstrate the validity of the developed electrospun gelatin-based system for in vitro culturing the human gut microbiota.
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Affiliation(s)
- Francesco Biagini
- Research Center "E. Piaggio", University of Pisa, Largo Lucio Lazzarino 1, 55122, Pisa, Italy
- Department of Information Engineering, University of Pisa, Via G. Caruso 16, 56122, Pisa, Italy
| | - Marco Calvigioni
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Via San Zeno 37, 56127, Pisa, Italy
| | - Anna Lapomarda
- Research Center "E. Piaggio", University of Pisa, Largo Lucio Lazzarino 1, 55122, Pisa, Italy
- Department of Information Engineering, University of Pisa, Via G. Caruso 16, 56122, Pisa, Italy
| | - Alessandra Vecchione
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Via San Zeno 37, 56127, Pisa, Italy
| | - Chiara Magliaro
- Research Center "E. Piaggio", University of Pisa, Largo Lucio Lazzarino 1, 55122, Pisa, Italy
- Department of Information Engineering, University of Pisa, Via G. Caruso 16, 56122, Pisa, Italy
| | - Carmelo De Maria
- Research Center "E. Piaggio", University of Pisa, Largo Lucio Lazzarino 1, 55122, Pisa, Italy
- Department of Information Engineering, University of Pisa, Via G. Caruso 16, 56122, Pisa, Italy
| | - Francesca Montemurro
- Research Center "E. Piaggio", University of Pisa, Largo Lucio Lazzarino 1, 55122, Pisa, Italy
- Department of Information Engineering, University of Pisa, Via G. Caruso 16, 56122, Pisa, Italy
| | - Francesco Celandroni
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Via San Zeno 37, 56127, Pisa, Italy
| | - Diletta Mazzantini
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Via San Zeno 37, 56127, Pisa, Italy
| | - Monica Mattioli-Belmonte
- Department of Clinical and Molecular Science-DISCLIMO, Università Politecnica delle Marche, Via Tronto 10/A, 60126, Ancona, Italy
| | - Emilia Ghelardi
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Via San Zeno 37, 56127, Pisa, Italy.
| | - Giovanni Vozzi
- Research Center "E. Piaggio", University of Pisa, Largo Lucio Lazzarino 1, 55122, Pisa, Italy.
- Department of Information Engineering, University of Pisa, Via G. Caruso 16, 56122, Pisa, Italy.
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10
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Shirwaiker RA, Fisher MB, Anderson B, Schuchard KG, Warren PB, Maze B, Grondin P, Ligler FS, Pourdeyhimi B. High-Throughput Manufacture of 3D Fiber Scaffolds for Regenerative Medicine. Tissue Eng Part C Methods 2020; 26:364-374. [PMID: 32552453 PMCID: PMC7398438 DOI: 10.1089/ten.tec.2020.0098] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 06/10/2020] [Indexed: 12/13/2022] Open
Abstract
Engineered scaffolds used to regenerate mammalian tissues should recapitulate the underlying fibrous architecture of native tissue to achieve comparable function. Current fibrous scaffold fabrication processes, such as electrospinning and three-dimensional (3D) printing, possess application-specific advantages, but they are limited either by achievable fiber sizes and pore resolution, processing efficiency, or architectural control in three dimensions. As such, a gap exists in efficiently producing clinically relevant, anatomically sized scaffolds comprising fibers in the 1-100 μm range that are highly organized. This study introduces a new high-throughput, additive fibrous scaffold fabrication process, designated in this study as 3D melt blowing (3DMB). The 3DMB system described in this study is modified from larger nonwovens manufacturing machinery to accommodate the lower volume, high-cost polymers used for tissue engineering and implantable biomedical devices and has a fiber collection component that uses adaptable robotics to create scaffolds with predetermined geometries. The fundamental process principles, system design, and key parameters are described, and two examples of the capabilities to create scaffolds for biomedical engineering applications are demonstrated. Impact statement Three-dimensional melt blowing (3DMB) is a new, high-throughput, additive manufacturing process to produce scaffolds composed of highly organized fibers in the anatomically relevant 1-100 μm range. Unlike conventional melt-blowing systems, the 3DMB process is configured for efficient use with the relatively expensive polymers necessary for biomedical applications, decreasing the required amounts of material for processing while achieving high throughputs compared with 3D printing or electrospinning. The 3DMB is demonstrated to make scaffolds composed of multiple fiber materials and organized into complex shapes, including those typical of human body parts.
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Affiliation(s)
- Rohan A. Shirwaiker
- Edward P. Fitts Department of Industrial and Systems Engineering, North Carolina State University, Raleigh, North Carolina, USA
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Raleigh, North Carolina, USA
- Comparative Medicine Institute, North Carolina State University, Raleigh, North Carolina, USA
| | - Matthew B. Fisher
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Raleigh, North Carolina, USA
- Comparative Medicine Institute, North Carolina State University, Raleigh, North Carolina, USA
| | - Bruce Anderson
- The Nonwovens Institute, North Carolina State University, Raleigh, North Carolina, USA
| | - Karl G. Schuchard
- Edward P. Fitts Department of Industrial and Systems Engineering, North Carolina State University, Raleigh, North Carolina, USA
- Comparative Medicine Institute, North Carolina State University, Raleigh, North Carolina, USA
| | - Paul B. Warren
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Raleigh, North Carolina, USA
- Comparative Medicine Institute, North Carolina State University, Raleigh, North Carolina, USA
| | - Benoit Maze
- The Nonwovens Institute, North Carolina State University, Raleigh, North Carolina, USA
| | - Pierre Grondin
- The Nonwovens Institute, North Carolina State University, Raleigh, North Carolina, USA
| | - Frances S. Ligler
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Raleigh, North Carolina, USA
- Comparative Medicine Institute, North Carolina State University, Raleigh, North Carolina, USA
- The Nonwovens Institute, North Carolina State University, Raleigh, North Carolina, USA
| | - Behnam Pourdeyhimi
- Comparative Medicine Institute, North Carolina State University, Raleigh, North Carolina, USA
- The Nonwovens Institute, North Carolina State University, Raleigh, North Carolina, USA
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11
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Qi D, Shi W, Black AR, Kuss MA, Pang X, He Y, Liu B, Duan B. Repair and regeneration of small intestine: A review of current engineering approaches. Biomaterials 2020; 240:119832. [PMID: 32113114 DOI: 10.1016/j.biomaterials.2020.119832] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 01/21/2020] [Accepted: 01/25/2020] [Indexed: 02/06/2023]
Abstract
The small intestine (SI) is difficult to regenerate or reconstruct due to its complex structure and functions. Recent developments in stem cell research, advanced engineering technologies, and regenerative medicine strategies bring new hope of solving clinical problems of the SI. This review will first summarize the structure, function, development, cell types, and matrix components of the SI. Then, the major cell sources for SI regeneration are introduced, and state-of-the-art biofabrication technologies for generating engineered SI tissues or models are overviewed. Furthermore, in vitro models and in vivo transplantation, based on intestinal organoids and tissue engineering, are highlighted. Finally, current challenges and future perspectives are discussed to help direct future applications for SI repair and regeneration.
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Affiliation(s)
- Dianjun Qi
- Department of General Practice, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China; Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, NE, USA; Division of Cardiology, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - Wen Shi
- Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, NE, USA; Division of Cardiology, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - Adrian R Black
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE, USA
| | - Mitchell A Kuss
- Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, NE, USA; Division of Cardiology, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - Xining Pang
- Department of General Practice, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China; Department of Academician Expert Workstation and Liaoning Province Human Amniotic Membrane Dressings Stem Cells and Regenerative Medicine Engineering Research Center, Shenyang Amnion Biological Engineering Technology Research and Development Center Co., Ltd, Shenyang, Liaoning, China
| | - Yini He
- Department of General Practice, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
| | - Bing Liu
- Department of Anorectal Surgery, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
| | - Bin Duan
- Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, NE, USA; Division of Cardiology, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, USA; Department of Surgery, University of Nebraska Medical Center, Omaha, NE, USA; Department of Mechanical and Materials Engineering, University of Nebraska-Lincoln, Lincoln, NE, USA.
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12
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Liu H, Wang Y, Cui K, Guo Y, Zhang X, Qin J. Advances in Hydrogels in Organoids and Organs-on-a-Chip. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1902042. [PMID: 31282047 DOI: 10.1002/adma.201902042] [Citation(s) in RCA: 180] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Revised: 05/25/2019] [Indexed: 05/10/2023]
Abstract
Significant advances in materials, microscale technology, and stem cell biology have enabled the construction of 3D tissues and organs, which will ultimately lead to more effective diagnostics and therapy. Organoids and organs-on-a-chip (OOC), evolved from developmental biology and bioengineering principles, have emerged as major technological breakthrough and distinct model systems to revolutionize biomedical research and drug discovery by recapitulating the key structural and functional complexity of human organs in vitro. There is growing interest in the development of functional biomaterials, especially hydrogels, for utilization in these promising systems to build more physiologically relevant 3D tissues with defined properties. The remarkable properties of defined hydrogels as proper extracellular matrix that can instruct cellular behaviors are presented. The recent trend where functional hydrogels are integrated into organoids and OOC systems for the construction of 3D tissue models is highlighted. Future opportunities and perspectives in the development of advanced hydrogels toward accelerating organoids and OOC research in biomedical applications are also discussed.
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Affiliation(s)
- Haitao Liu
- Division of Biotechnology, CAS Key Laboratory of Separation Sciences for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yaqing Wang
- Division of Biotechnology, CAS Key Laboratory of Separation Sciences for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Kangli Cui
- Division of Biotechnology, CAS Key Laboratory of Separation Sciences for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yaqiong Guo
- Division of Biotechnology, CAS Key Laboratory of Separation Sciences for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xu Zhang
- Department of Biomedical Engineering, Duke University, Durham, NC, 27708, USA
| | - Jianhua Qin
- Division of Biotechnology, CAS Key Laboratory of Separation Sciences for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, 100101, China
- CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, 200031, China
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13
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Yao T, Chen H, Baker MB, Moroni L. Effects of Fiber Alignment and Coculture with Endothelial Cells on Osteogenic Differentiation of Mesenchymal Stromal Cells. Tissue Eng Part C Methods 2019; 26:11-22. [PMID: 31774033 DOI: 10.1089/ten.tec.2019.0232] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Vascularization is a critical process during bone regeneration. The lack of vascular networks leads to insufficient oxygen and nutrients supply, which compromises the survival of regenerated bone. One strategy for improving the survival and osteogenesis of tissue-engineered bone grafts involves the coculture of endothelial cells (ECs) with mesenchymal stromal cells (MSCs). Moreover, bone regeneration is especially challenging due to its unique structural properties with aligned topographical cues, with which stem cells can interact. Inspired by the aligned fibrillar nanostructures in human cancellous bone, we fabricated polycaprolactone (PCL) electrospun fibers with aligned and random morphology, cocultured human MSCs with human umbilical vein ECs (HUVECs), and finally investigated how these two factors modulate osteogenic differentiation of human MSCs (hMSCs). After optimizing cell ratio, a hMSCs/HUVECs ratio (90:10) was considered to be the best combination for osteogenic differentiation. Coculture results showed that hMSCs and HUVECs adhered to and proliferated well on both scaffolds. The aligned structure of PCL fibers strongly influenced the morphology and orientation of hMSCs and HUVECs; however, fiber alignment was observed to not affect alkaline phosphate (ALP) activity or mineralization of hMSCs compared with random scaffolds. More importantly, cocultured cells on both random and aligned scaffolds had significantly higher ALP activities than monoculture groups, which indicated that coculture with HUVECs provided a larger relative contribution to the osteogenesis of hMSCs compared with fiber alignment. Taken together, we conclude that coculture of hMSCs with ECs is an effective strategy to promote osteogenesis on electrospun scaffolds, and aligned fibers could be introduced to regenerate bone tissues with oriented topography without significant deleterious effects on hMSCs differentiation. This study shows the ability to grow oriented tissue-engineered cocultures with significant increases in osteogenesis over monoculture conditions. Impact statement This work demonstrates an effective method of enhancing osteogenesis of mesenchymal stromal cells on electrospun scaffolds through coculturing with endothelial cells. Furthermore, we provide the optimized conditions for cocultures on electrospun fibrous scaffolds and engineered bone tissues with oriented topography on aligned fibers. This study demonstrates promising findings for growing oriented tissue-engineered cocultures with significant increase in osteogenesis over monoculture conditions.
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Affiliation(s)
- Tianyu Yao
- Complex Tissue Regeneration Department, MERLN Institute for Technology Inspired Regenerative Medicine, Maastricht University, Maastricht, The Netherlands
| | - Honglin Chen
- Institute for Life Science, School of Medicine, South China University of Technology, Guangzhou, China
| | - Matthew B Baker
- Complex Tissue Regeneration Department, MERLN Institute for Technology Inspired Regenerative Medicine, Maastricht University, Maastricht, The Netherlands
| | - Lorenzo Moroni
- Complex Tissue Regeneration Department, MERLN Institute for Technology Inspired Regenerative Medicine, Maastricht University, Maastricht, The Netherlands
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14
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Yang M, Guo Z, Li T, Li J, Chen L, Wang J, Wu J, Wu Z. Synergetic effect of chemical and topological signals of gingival regeneration scaffold on the behavior of human gingival fibroblasts. J Biomed Mater Res A 2019; 107:1875-1885. [PMID: 31034755 DOI: 10.1002/jbm.a.36708] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Revised: 04/13/2019] [Accepted: 04/24/2019] [Indexed: 11/11/2022]
Affiliation(s)
- Moyang Yang
- Key Laboratory of Oral MedicineGuangzhou Institute of Oral Disease, Stomatology Hospital of Guangzhou Medical University Guangzhou China
| | - Zhenzhao Guo
- Department of OrthopedicThe First Affiliated Hospital, Jinan University Guangzhou China
| | - Tong Li
- Department of ProsthodonticsHospital of Stomatology, Jilin University Changchun China
| | - Jing Li
- Department of ProsthodonticsHospital of Stomatology, Jilin University Changchun China
| | - Liyu Chen
- Key Laboratory of Oral MedicineGuangzhou Institute of Oral Disease, Stomatology Hospital of Guangzhou Medical University Guangzhou China
| | - Junmei Wang
- Key Laboratory of Oral MedicineGuangzhou Institute of Oral Disease, Stomatology Hospital of Guangzhou Medical University Guangzhou China
| | - Jincheng Wu
- Key Laboratory of Oral MedicineGuangzhou Institute of Oral Disease, Stomatology Hospital of Guangzhou Medical University Guangzhou China
| | - Zhe Wu
- Key Laboratory of Oral MedicineGuangzhou Institute of Oral Disease, Stomatology Hospital of Guangzhou Medical University Guangzhou China
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15
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Silk sericin-enhanced microstructured bacterial cellulose as tissue engineering scaffold towards prospective gut repair. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 102:502-510. [PMID: 31147021 DOI: 10.1016/j.msec.2019.04.043] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 04/03/2019] [Accepted: 04/12/2019] [Indexed: 12/20/2022]
Abstract
As a first step towards the production of functional cell sheets applicable for the regeneration of gut muscle layer, microstructured bacterial cellulose (mBC) was assessed for its ability to support the growth of enteric nervous system (ENS) and gut smooth muscle cells (SMCs). To improve the cellular response, mBC was modified with silk sericin (SS) which has renowned abilities in supporting tissue regeneration. While SS did not impair the line structures imparted to BC by PDMS templates, similarly to the patterns, it affected its physical properties, ultimately leading to variations in the behavior of cells cultured onto these substrates. Enabled by the stripes on mBC, both SMCs and ENS cells were aligned in vitro, presenting the in vivo-like morphology essential for peristalsis and gut function. Interestingly, cell growth and differentiation remarkably enhanced upon SS addition to the samples, indicating the promise of the mBC-SS constructs as biomaterial not only for gut engineering, but also for tissues where cellular alignment is required for function, namely the heart, blood vessels, and similars.
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16
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Tsai SW, Yu YL, Hsu FY. Fabrication of polycaprolactone tubular scaffolds with an orthogonal-bilayer structure for smooth muscle cells. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 100:308-314. [PMID: 30948066 DOI: 10.1016/j.msec.2019.03.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Revised: 01/30/2019] [Accepted: 03/04/2019] [Indexed: 01/06/2023]
Abstract
In this study, we used electrospinning to prepare a bilayered polycaprolactone (PCL) tubular graft consisting of an internal layer comprising axial nanofibers and an external layer comprising circumferentially aligned nanofibers. Subsequently, the surfaces of the electrospun PCL tubular scaffolds were modified with 1,6-diaminohexane to introduce amino groups and were then chemically conjugated with gelatin (Gel). The amino groups and Gel were successfully immobilized on the PCL scaffolds according to a ninhydrin assay, attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopic analysis and contact angle analysis. Additionally, vascular smooth muscle cells (vSMCs, A7r5) were cultured on random and aligned Gel-PCL scaffolds to evaluate the effects of fiber orientation on cell behavior. The results of immunofluorescence analysis showed that vSMCs on the aligned Gel-PCL scaffolds exhibited a pro-contractile phenotype.
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Affiliation(s)
- Shiao-Wen Tsai
- Graduate Institute of Biomedical Engineering, Chang Gung University, Taoyuan City 33302, Taiwan; Department of Orthopedic Surgery, Chang Gung Memorial Hospital, Linko 33305, Taiwan; Department of Periodontics, Chang Gung Memorial Hospital, Taipei 10507, Taiwan
| | - Yen-Ling Yu
- Department of Bioscience and Biotechnology, National Taiwan Ocean University, Keelung City 20224, Taiwan
| | - Fu-Yin Hsu
- Department of Bioscience and Biotechnology, National Taiwan Ocean University, Keelung City 20224, Taiwan.
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17
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Dumont CM, Carlson MA, Munsell MK, Ciciriello AJ, Strnadova K, Park J, Cummings BJ, Anderson AJ, Shea LD. Aligned hydrogel tubes guide regeneration following spinal cord injury. Acta Biomater 2019; 86:312-322. [PMID: 30610918 DOI: 10.1016/j.actbio.2018.12.052] [Citation(s) in RCA: 71] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Revised: 12/22/2018] [Accepted: 12/31/2018] [Indexed: 12/21/2022]
Abstract
Directing the organization of cells into a tissue with defined architectures is one use of biomaterials for regenerative medicine. To this end, hydrogels are widely investigated as they have mechanical properties similar to native soft tissues and can be formed in situ to conform to a defect. Herein, we describe the development of porous hydrogel tubes fabricated through a two-step polymerization process with an intermediate microsphere phase that provides macroscale porosity (66.5%) for cell infiltration. These tubes were investigated in a spinal cord injury model, with the tubes assembled to conform to the injury and to provide an orientation that guides axons through the injury. Implanted tubes had good apposition and were integrated with the host tissue due to cell infiltration, with a transient increase in immune cell infiltration at 1 week that resolved by 2 weeks post injury compared to a gelfoam control. The glial scar was significantly reduced relative to control, which enabled robust axon growth along the inner and outer surface of the tubes. Axon density within the hydrogel tubes (1744 axons/mm2) was significantly increased more than 3-fold compared to the control (456 axons/mm2), with approximately 30% of axons within the tube myelinated. Furthermore, implantation of hydrogel tubes enhanced functional recovery relative to control. This modular assembly of porous tubes to fill a defect and directionally orient tissue growth could be extended beyond spinal cord injury to other tissues, such as vascular or musculoskeletal tissue. STATEMENT OF SIGNIFICANCE: Tissue engineering approaches that mimic the native architecture of healthy tissue are needed following injury. Traditionally, pre-molded scaffolds have been implemented but require a priori knowledge of wound geometries. Conversely, hydrogels can conform to any injury, but do not guide bi-directional regeneration. In this work, we investigate the feasibility of a system of modular hydrogel tubes to promote bi-directional regeneration after spinal cord injury. This system allows for tubes to be cut to size during surgery and implanted one-by-one to fill any injury, while providing bi-directional guidance. Moreover, this system of tubes can be broadly applied to tissue engineering approaches that require a modular guidance system, such as repair to vascular or musculoskeletal tissues.
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18
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Dotivala AC, Puthuveetil KP, Tang C. Shear Force Fiber Spinning: Process Parameter and Polymer Solution Property Considerations. Polymers (Basel) 2019; 11:E294. [PMID: 30960278 PMCID: PMC6419197 DOI: 10.3390/polym11020294] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 01/25/2019] [Accepted: 01/31/2019] [Indexed: 11/18/2022] Open
Abstract
For application of polymer nanofibers (e.g., sensors, and scaffolds to study cell behavior) it is important to control the spatial orientation of the fibers. We compare the ability to align and pattern fibers using shear force fiber spinning, i.e. contacting a drop of polymer solution with a rotating collector to mechanically draw a fiber, with electrospinning onto a rotating drum. Using polystyrene as a model system, we observe that the fiber spacing using shear force fiber spinning was more uniform than electrospinning with the rotating drum with relative standard deviations of 18% and 39%, respectively. Importantly, the approaches are complementary as the fiber spacing achieved using electrospinning with the rotating drum was ~10 microns while fiber spacing achieved using shear force fiber spinning was ~250 microns. To expand to additional polymer systems, we use polymer entanglement and capillary number. Solution properties that favor large capillary numbers (>50) prevent droplet breakup to facilitate fiber formation. Draw-down ratio was useful for determining appropriate process conditions (flow rate, rotational speed of the collector) to achieve continuous formation of fibers. These rules of thumb for considering the polymer solution properties and process parameters are expected to expand use of this platform for creating hierarchical structures of multiple fiber layers for cell scaffolds and additional applications.
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Affiliation(s)
- Arzan C Dotivala
- Chemical and Life Science Engineering Department, Virginia Commonwealth University, Richmond, VA 23284-3028, USA.
| | - Kavya P Puthuveetil
- Chemical and Life Science Engineering Department, Virginia Commonwealth University, Richmond, VA 23284-3028, USA.
| | - Christina Tang
- Chemical and Life Science Engineering Department, Virginia Commonwealth University, Richmond, VA 23284-3028, USA.
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19
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Yang M, Gao X, Shen Z, Shi X, Lin Z. Gelatin-assisted conglutination of aligned polycaprolactone nanofilms into a multilayered fibre-guiding scaffold for periodontal ligament regeneration. RSC Adv 2018; 9:507-518. [PMID: 35521598 PMCID: PMC9059392 DOI: 10.1039/c8ra09073d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Accepted: 12/03/2018] [Indexed: 01/09/2023] Open
Abstract
The repair or regeneration of well-aligned periodontal ligaments (PDL) remains a challenging clinical task in reconstructive surgeries and regenerative medicine. Topographical cell guidance has been utilized as a tissue-engineering bionic technique and facilitates the geometric design of composite materials. In this investigation, we manufactured multilayered scaffolds by cementing aligned polycaprolactone (PCL) electrospun films together using gelatin; the fibre-guiding scaffold mimicked the natural structure of periodontal ligaments and was aimed at promoting the growth of functionally oriented ligamentous fibres in vivo. Experiments in vitro demonstrated that this scaffold could provide good attachment and tissue-mimicking microenvironments for "seeding cells", that is, human periodontal ligament mesenchyme cells (PDLSCs). Histological and immunofluorescence results indicated that a three-dimensional aligned construct could significantly enhance the angulation of new-born PDL-like tissue and facilitate collagen formation and maturation at periodontal fenestration defects compared to an amorphous PCL embedded scaffold. Multilayered fibre-guiding scaffold made of PCL and gelatin was demonstrated to be applicable for oriented neogenesis of periodontium, and it may represent an important potential application for dental stem cell delivery for periodontal regenerative medicine.
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Affiliation(s)
- Mengyao Yang
- Guangdong Provincial Key Laboratory of Stomatology, Department of Operative Dentistry and Endodontics, Guanghua School of Stomatology, Sun Yat-sen University Guangzhou China
| | - Xianling Gao
- Guangdong Provincial Key Laboratory of Stomatology, Department of Operative Dentistry and Endodontics, Guanghua School of Stomatology, Sun Yat-sen University Guangzhou China
| | - Zongshan Shen
- Guangdong Provincial Key Laboratory of Stomatology, Department of Operative Dentistry and Endodontics, Guanghua School of Stomatology, Sun Yat-sen University Guangzhou China
| | - Xuetao Shi
- Department of Biomedical Engineering, School of Materials Science and Engineering, South China University of Technology Guangzhou China
| | - Zhengmei Lin
- Guangdong Provincial Key Laboratory of Stomatology, Department of Operative Dentistry and Endodontics, Guanghua School of Stomatology, Sun Yat-sen University Guangzhou China
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He J, Sun C, Gu Z, Yang Y, Gu M, Xue C, Xie Z, Ren H, Wang Y, Liu Y, Liu M, Ding F, Leong KW, Gu X. Morphology, Migration, and Transcriptome Analysis of Schwann Cell Culture on Butterfly Wings with Different Surface Architectures. ACS NANO 2018; 12:9660-9668. [PMID: 30125084 DOI: 10.1021/acsnano.8b00552] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
It has been shown that material surface topography greatly affects cell attachment, growth, proliferation, and differentiation. However, the underlying molecular mechanisms for cell-material interactions are still not understood well. Here, two kinds of butterfly wings with different surface architectures were employed for addressing such an issue. Papilio ulysses telegonus (P.u.t.) butterfly wing surface is composed of micro/nanoconcaves, whereas Morpho menelaus (M.m.) butterfly wings are decorated with grooves. RSC96 cells grown on M.m. wings showed a regular sorting pattern along with the grooves. On the contrary, the cells seeded on P.u.t. wings exhibited random arrangement. Transcriptome sequencing and bioinformatics analysis revealed that huntingtin (Htt)-regulated lysosome activity is a potential key factor for determining cell growth behavior on M.m. butterfly wings. Gene silence further confirmed this notion. In vivo experiments showed that the silicone tubes fabricated with M.m. wings markedly facilitate rat sciatic nerve regeneration after injury. Lysosome activity and Htt expression were greatly increased in the M.m. wing-fabricated graft-bridged nerves. Collectively, our data provide a theoretical basis for employing butterfly wings to construct biomimetic nerve grafts and establish Htt lysosome as a crucial regulator for cell-material interactions.
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Affiliation(s)
- Jianghong He
- Key Laboratory for Neuroregeneration of Jiangsu Province and Ministry of Education, Co-innovation Center of Neuroregeneration , Nantong University , Nantong 226001 , China
| | - Cheng Sun
- Key Laboratory for Neuroregeneration of Jiangsu Province and Ministry of Education, Co-innovation Center of Neuroregeneration , Nantong University , Nantong 226001 , China
| | - Zhongze Gu
- State Key Laboratory of Bioelectronics , Southeast University , Nanjing 210096 , China
| | - Yumin Yang
- Key Laboratory for Neuroregeneration of Jiangsu Province and Ministry of Education, Co-innovation Center of Neuroregeneration , Nantong University , Nantong 226001 , China
| | - Miao Gu
- Chengde Medical College , Chengde 067000 , China
| | - Chengbin Xue
- Key Laboratory for Neuroregeneration of Jiangsu Province and Ministry of Education, Co-innovation Center of Neuroregeneration , Nantong University , Nantong 226001 , China
- Jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury Repair , Affiliated Hospital of Nantong University , Nantong 226001 , China
| | - Zhuoying Xie
- State Key Laboratory of Bioelectronics , Southeast University , Nanjing 210096 , China
| | - Hechun Ren
- Key Laboratory for Neuroregeneration of Jiangsu Province and Ministry of Education, Co-innovation Center of Neuroregeneration , Nantong University , Nantong 226001 , China
| | - Yongjun Wang
- Key Laboratory for Neuroregeneration of Jiangsu Province and Ministry of Education, Co-innovation Center of Neuroregeneration , Nantong University , Nantong 226001 , China
| | - Yan Liu
- Key Laboratory for Neuroregeneration of Jiangsu Province and Ministry of Education, Co-innovation Center of Neuroregeneration , Nantong University , Nantong 226001 , China
| | - Mei Liu
- Key Laboratory for Neuroregeneration of Jiangsu Province and Ministry of Education, Co-innovation Center of Neuroregeneration , Nantong University , Nantong 226001 , China
| | - Fei Ding
- Key Laboratory for Neuroregeneration of Jiangsu Province and Ministry of Education, Co-innovation Center of Neuroregeneration , Nantong University , Nantong 226001 , China
| | - Kam W Leong
- Department of Biomedical Engineering , Columbia University , New York , New York 10027 , United States
| | - Xiaosong Gu
- Key Laboratory for Neuroregeneration of Jiangsu Province and Ministry of Education, Co-innovation Center of Neuroregeneration , Nantong University , Nantong 226001 , China
- Jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury Repair , Affiliated Hospital of Nantong University , Nantong 226001 , China
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21
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Kobayashi M, Khalil HA, Lei NY, Wang Q, Wang K, Wu BM, Dunn JCY. Bioengineering functional smooth muscle with spontaneous rhythmic contraction in vitro. Sci Rep 2018; 8:13544. [PMID: 30202095 PMCID: PMC6131399 DOI: 10.1038/s41598-018-31992-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Accepted: 08/29/2018] [Indexed: 12/25/2022] Open
Abstract
Oriented smooth muscle layers in the intestine contract rhythmically due to the action of interstitial cells of Cajal (ICC) that serve as pacemakers of the intestine. Disruption of ICC networks has been reported in various intestinal motility disorders, which limit the quality and expectancy of life. A significant challenge in intestinal smooth muscle engineering is the rapid loss of function in cultured ICC and smooth muscle cells (SMC). Here we demonstrate a novel approach to maintain the function of both ICC and SMC in vitro. Primary intestinal SMC mixtures cultured on feeder cells seeded electrospun poly(3-caprolactone) scaffolds exhibited rhythmic contractions with directionality for over 10 weeks in vitro. The simplicity of this system should allow for wide usage in research on intestinal motility disorders and tissue engineering, and may prove to be a versatile platform for generating other types of functional SMC in vitro.
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Affiliation(s)
- Masae Kobayashi
- Department of Bioengineering, Henry Samueli School of Engineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Hassan A Khalil
- Department of Surgery, David Geffen School of Medicine at UCLA, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Nan Ye Lei
- Department of Bioengineering, Henry Samueli School of Engineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA.,Department of Surgery, David Geffen School of Medicine at UCLA, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Qianqian Wang
- Department of Bioengineering, Henry Samueli School of Engineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Ke Wang
- Department of Computer Science, University of North Carolina Chapel Hill, North Carolina, NC, 27514, USA
| | - Benjamin M Wu
- Department of Bioengineering, Henry Samueli School of Engineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA.,Division of Advanced Prosthodontics & Weintraub Center for Reconstructive Biotechnology, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - James C Y Dunn
- Department of Bioengineering, Henry Samueli School of Engineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA. .,Department of Surgery, David Geffen School of Medicine at UCLA, University of California, Los Angeles, Los Angeles, CA, 90095, USA. .,Department of Surgery, Stanford University School of Medicine, Stanford, CA, 94305, USA.
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22
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Wang N, Peng Y, Zheng W, Tang L, Cheng S, Yang J, Liu S, Zhang W, Jiang X. A Strategy for Rapid Construction of Blood Vessel-Like Structures with Complex Cell Alignments. Macromol Biosci 2018; 18:e1700408. [DOI: 10.1002/mabi.201700408] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Revised: 03/05/2018] [Indexed: 12/19/2022]
Affiliation(s)
- Nuoxin Wang
- School of Life Science and Technology; Harbin Institute of Technology; 2 Yikuang Road, Nangang District Harbin 150001 China
- Beijing Engineering Research Center for BioNanotechnology & CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety; CAS Center for Excellence in Nanoscience; National Center for NanoScience and Technology; 11 Beiyitiao, Zhongguancun, Haidian District Beijing 100190 China
| | - Yunhu Peng
- Beijing Engineering Research Center for BioNanotechnology & CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety; CAS Center for Excellence in Nanoscience; National Center for NanoScience and Technology; 11 Beiyitiao, Zhongguancun, Haidian District Beijing 100190 China
- Department of Chemical and Biomolecular Engineering; North Carolina State University; NC 27695 USA
| | - Wenfu Zheng
- Beijing Engineering Research Center for BioNanotechnology & CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety; CAS Center for Excellence in Nanoscience; National Center for NanoScience and Technology; 11 Beiyitiao, Zhongguancun, Haidian District Beijing 100190 China
| | - Lixue Tang
- Beijing Engineering Research Center for BioNanotechnology & CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety; CAS Center for Excellence in Nanoscience; National Center for NanoScience and Technology; 11 Beiyitiao, Zhongguancun, Haidian District Beijing 100190 China
| | - Shiyu Cheng
- Beijing Engineering Research Center for BioNanotechnology & CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety; CAS Center for Excellence in Nanoscience; National Center for NanoScience and Technology; 11 Beiyitiao, Zhongguancun, Haidian District Beijing 100190 China
| | - Junchuan Yang
- Beijing Engineering Research Center for BioNanotechnology & CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety; CAS Center for Excellence in Nanoscience; National Center for NanoScience and Technology; 11 Beiyitiao, Zhongguancun, Haidian District Beijing 100190 China
| | - Shaoqin Liu
- School of Life Science and Technology; Harbin Institute of Technology; 2 Yikuang Road, Nangang District Harbin 150001 China
- Beijing Engineering Research Center for BioNanotechnology & CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety; CAS Center for Excellence in Nanoscience; National Center for NanoScience and Technology; 11 Beiyitiao, Zhongguancun, Haidian District Beijing 100190 China
| | - Wei Zhang
- Beijing Engineering Research Center for BioNanotechnology & CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety; CAS Center for Excellence in Nanoscience; National Center for NanoScience and Technology; 11 Beiyitiao, Zhongguancun, Haidian District Beijing 100190 China
| | - Xingyu Jiang
- School of Life Science and Technology; Harbin Institute of Technology; 2 Yikuang Road, Nangang District Harbin 150001 China
- Beijing Engineering Research Center for BioNanotechnology & CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety; CAS Center for Excellence in Nanoscience; National Center for NanoScience and Technology; 11 Beiyitiao, Zhongguancun, Haidian District Beijing 100190 China
- University of Chinese Academy of Sciences; 19 A Yuquan Road, Shijingshan District Beijing 100049 China
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23
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Zhuang J, Lin S, Dong L, Cheng K, Weng W. Magnetically Assisted Electrodeposition of Aligned Collagen Coatings. ACS Biomater Sci Eng 2018; 4:1528-1535. [DOI: 10.1021/acsbiomaterials.7b01038] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Junjun Zhuang
- School of Materials Science and Engineering, State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, China
| | - Suya Lin
- School of Materials Science and Engineering, State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, China
| | - Lingqing Dong
- School of Materials Science and Engineering, State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, China
- The Affiliated Stomatologic Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China
| | - Kui Cheng
- School of Materials Science and Engineering, State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, China
| | - Wenjian Weng
- School of Materials Science and Engineering, State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, China
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24
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Wang Q, Wang K, Solorzano-Vargas RS, Lin PY, Walthers CM, Thomas AL, Martín MG, Dunn JCY. Bioengineered intestinal muscularis complexes with long-term spontaneous and periodic contractions. PLoS One 2018; 13:e0195315. [PMID: 29718926 PMCID: PMC5931477 DOI: 10.1371/journal.pone.0195315] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Accepted: 03/20/2018] [Indexed: 01/04/2023] Open
Abstract
Although critical for studies of gut motility and intestinal regeneration, the in vitro culture of intestinal muscularis with peristaltic function remains a significant challenge. Periodic contractions of intestinal muscularis result from the coordinated activity of smooth muscle cells (SMC), the enteric nervous system (ENS), and interstitial cells of Cajal (ICC). Reproducing this activity requires the preservation of all these cells in one system. Here we report the first serum-free culture methodology that consistently maintains spontaneous and periodic contractions of murine and human intestinal muscularis cells for months. In this system, SMC expressed the mature marker myosin heavy chain, and multipolar/dipolar ICC, uniaxonal/multipolar neurons and glial cells were present. Furthermore, drugs affecting neural signals, ICC or SMC altered the contractions. Combining this method with scaffolds, contracting cell sheets were formed with organized architecture. With the addition of intestinal epithelial cells, this platform enabled up to 11 types of cells from mucosa, muscularis and serosa to coexist and epithelial cells were stretched by the contracting muscularis cells. The method constitutes a powerful tool for mechanistic studies of gut motility disorders and the functional regeneration of the engineered intestine.
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Affiliation(s)
- Qianqian Wang
- Department of Bioengineering, Henry Samueli School of Engineering and Applied Science, University of California Los Angeles, Los Angeles, California, United States of America
- Division of Pediatric Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, California, United States of America
| | - Ke Wang
- Department of Computer Science, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - R. Sergio Solorzano-Vargas
- Department of Pediatrics, Division of Gastroenterology and Nutrition, Mattel Children’s Hospital and the David Geffen School of Medicine at UCLA, University of California Los Angeles, Los Angeles, California, United States of America
| | - Po-Yu Lin
- Department of Bioengineering, Henry Samueli School of Engineering and Applied Science, University of California Los Angeles, Los Angeles, California, United States of America
- Division of Pediatric Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, California, United States of America
| | - Christopher M. Walthers
- Department of Bioengineering, Henry Samueli School of Engineering and Applied Science, University of California Los Angeles, Los Angeles, California, United States of America
| | - Anne-Laure Thomas
- Division of Pediatric Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, California, United States of America
| | - Martín G. Martín
- Department of Pediatrics, Division of Gastroenterology and Nutrition, Mattel Children’s Hospital and the David Geffen School of Medicine at UCLA, University of California Los Angeles, Los Angeles, California, United States of America
| | - James C. Y. Dunn
- Department of Bioengineering, Henry Samueli School of Engineering and Applied Science, University of California Los Angeles, Los Angeles, California, United States of America
- Division of Pediatric Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, California, United States of America
- Department of Bioengineering, Stanford University, Stanford, California, United States of America
- * E-mail:
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25
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Zhang J, Sun Y, Zhao Y, Wei B, Xu C, He L, Oliveira CLP, Wang H. Centrifugation-induced fibrous orientation in fish-sourced collagen matrices. SOFT MATTER 2017; 13:9220-9228. [PMID: 29199311 DOI: 10.1039/c7sm01871a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Orientation of fibrous collagen structures plays an important role not only in the native function of various biological tissues but also in the development of next-generation tissue engineering scaffolds. However, the controlled assembly of collagen in vitro into an anisotropic structure, avoiding complex technical procedures and specialized apparatus, remains a challenge. Here, an oriented collagen matrix was fabricated at the macroscale by simple centrifugation, and the aligned topographical features of the resulting collagen matrix were revealed by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and small angle X-ray scattering. The aligned matrix exhibited a higher ultimate tensile strength and strain than a random matrix. Centrifugation had an impact on the diameter and density of the collagen fibrils, while it had no effect on their native D-periodicity and thermal stability. Additionally, structural anisotropy of the collagen matrix facilitated the proliferation and migration of NIH/3T3 fibroblasts, compared with the random one. This simple and cost-effective method could lead to mass production of aligned collagen matrices and future possibilities for different applications in tissue engineering.
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Affiliation(s)
- Juntao Zhang
- School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan, Hubei, China.
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26
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Cheng J, Jun Y, Qin J, Lee SH. Electrospinning versus microfluidic spinning of functional fibers for biomedical applications. Biomaterials 2017; 114:121-143. [DOI: 10.1016/j.biomaterials.2016.10.040] [Citation(s) in RCA: 190] [Impact Index Per Article: 27.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Revised: 09/29/2016] [Accepted: 10/27/2016] [Indexed: 12/31/2022]
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27
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Pugliese R, Gelain F. Peptidic Biomaterials: From Self-Assembling to Regenerative Medicine. Trends Biotechnol 2016; 35:145-158. [PMID: 27717599 DOI: 10.1016/j.tibtech.2016.09.004] [Citation(s) in RCA: 97] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2016] [Revised: 09/07/2016] [Accepted: 09/13/2016] [Indexed: 11/29/2022]
Abstract
Peptidic biomaterials represent a particularly exciting topic in regenerative medicine. Peptidic scaffolds can be specifically designed for biomimetic customization for targeted therapy. The field is at a pivotal point where preclinical research is being translated into clinics, so it is crucial to understand the theory and describe the status of this rapidly developing technology. In this review, we highlight major advantages and current limitations of self-assembling peptide-based biomaterials, and we discuss the most widely used classes of assembling peptides, describing recent and promising approaches in tissue engineering, drug delivery, and clinics. We also suggest design strategies and hurdles that still need to be overcome to fully exploit their therapeutic potential.
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Affiliation(s)
- Raffaele Pugliese
- IRCCS Casa Sollievo della Sofferenza, Opera di San Pio da Pietrelcina, Viale Cappuccini, 1, 71013 San Giovanni Rotondo (FG), Italy
| | - Fabrizio Gelain
- IRCCS Casa Sollievo della Sofferenza, Opera di San Pio da Pietrelcina, Viale Cappuccini, 1, 71013 San Giovanni Rotondo (FG), Italy; Center for Nanomedicine and Tissue Engineering (CNTE), A. O. Ospedale Niguarda Cà Granda, Piazza dell' Ospedale Maggiore 3, 20162 Milan, Italy.
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28
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Walthers CM, Lyall CJ, Nazemi AK, Rana PV, Dunn JCY. Collagen and heparan sulfate coatings differentially alter cell proliferation and attachment in vitro and in vivo. TECHNOLOGY 2016; 4:159-169. [PMID: 28713850 PMCID: PMC5507618 DOI: 10.1142/s2339547816400033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Tissue engineering is an innovative field of research applied to treat intestinal diseases. Engineered smooth muscle requires dense smooth muscle tissue and robust vascularization to support contraction. The purpose of this study was to use heparan sulfate (HS) and collagen coatings to increase the attachment of smooth muscle cells (SMCs) to scaffolds and improve their survival after implantation. SMCs grown on biologically coated scaffolds were evaluated for maturity and cell numbers after 2, 4 and 6 weeks in vitro and both 2 and 6 weeks in vivo. Implants were also assessed for vascularization. Collagen-coated scaffolds increased attachment, growth and maturity of SMCs in culture. HS-coated implants increased angiogenesis after 2 weeks, contributing to an increase in SMC survival and growth compared to HS-coated scaffolds grown in vitro. The angiogenic effects of HS may be useful for engineering intestinal smooth muscle.
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Affiliation(s)
- Christopher M Walthers
- Department of Bioengineering and Department of Surgery, University of California, Los Angeles, 10833 Le Conte Avenue, Los Angeles, CA 90095, USA
| | - Chase J Lyall
- Department of Bioengineering and Department of Surgery, University of California, Los Angeles, 10833 Le Conte Avenue, Los Angeles, CA 90095, USA
| | - Alireza K Nazemi
- Department of Bioengineering and Department of Surgery, University of California, Los Angeles, 10833 Le Conte Avenue, Los Angeles, CA 90095, USA
| | - Puneet V Rana
- Department of Bioengineering and Department of Surgery, University of California, Los Angeles, 10833 Le Conte Avenue, Los Angeles, CA 90095, USA
| | - James C Y Dunn
- Department of Bioengineering and Department of Surgery, University of California, Los Angeles, 10833 Le Conte Avenue, Los Angeles, CA 90095, USA
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29
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Jordan AM, Viswanath V, Kim SE, Pokorski JK, Korley LTJ. Processing and surface modification of polymer nanofibers for biological scaffolds: a review. J Mater Chem B 2016; 4:5958-5974. [PMID: 32263485 DOI: 10.1039/c6tb01303a] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Polymeric fibrous constructs possess high surface area-to-volume ratios when compared with solid substrates and are quite commonly used as tissue engineering and cell growth scaffolds. An overview of important design and material considerations for fibrous scaffolds as well as an outline of both established and emerging solution- and melt-based fabrication techniques is provided. Innovative post-process surface modification avenues using "click" chemistry with both single and dual active cues as well as gradient cues, which maintain the fibrous structure are described. By combining process parameters with post-process surface modification, researchers have been able to selectively tune cellular response after seeding and culturing on fibrous constructs.
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Affiliation(s)
- Alex M Jordan
- Center for Layered Polymeric Systems, Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, Ohio 44106-7202, USA.
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30
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Pham JT, Xue L, del Campo A, Salierno M. Guiding cell migration with microscale stiffness patterns and undulated surfaces. Acta Biomater 2016; 38:106-15. [PMID: 27109767 DOI: 10.1016/j.actbio.2016.04.031] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Revised: 04/14/2016] [Accepted: 04/18/2016] [Indexed: 01/13/2023]
Abstract
UNLABELLED By placing stiff structures under soft materials, prior studies have demonstrated that cells sense and prefer to position themselves over the stiff structures. However, an understanding of how cells migrate on such surfaces has not been established. Many studies have also shown that cells readily align to surface topography. Here we investigate the influence of these two aspects in directing cell migration on surfaces with 5 and 10μm line stiffness patterns (a cellular to subcellular length scale). A simple approach to create flat, stiffness-patterned surfaces by suspending a thin, low modulus polydimethylsiloxane (PDMS) film over a high modulus PDMS structure is presented, as well as a route to add undulations. We confirm that cells are able to sense through the thin film by observation of focal adhesions being positioned on stiff regions. We examine migration by introducing migration efficiency, a quantitative parameter to determine how strongly cells migrate in a certain direction. We found that cells have a preference to align and migrate along stiffness patterns while the addition of undulations boosts this effect, significantly increasing migration efficiency in either case. Interestingly, we found speed to play little role in the migration efficiency and to be mainly influenced by the top layer modulus. Our results demonstrate that both stiffness patterns and surface undulations are important considerations when investigating the interactions of cells with biomaterial surfaces. STATEMENT OF SIGNIFICANCE Two common physical considerations for cell-surface interactions include patterned stiffness and patterned topography. However, their relative influences on cell migration behavior have not been established, particularly on cellular to subcellular scale patterns. For stiffness patterning, it has been recently shown that cells tend to position themselves over a stiff structure that is placed under a thin soft layer. By quantifying the directional migration efficiency on such surfaces with and without undulations, we show that migration can be manipulated by flat stiffness patterns, although surface undulations also play a strong role. Our results offer insight on the effect of cellular scale stiffness and topographical patterns on cell migration, which is critical for the development of fundamental cell studies and engineered implants.
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31
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Lowe CJ, Reucroft IM, Grota MC, Shreiber DI. Production of Highly Aligned Collagen Scaffolds by Freeze-drying of Self-assembled, Fibrillar Collagen Gels. ACS Biomater Sci Eng 2016; 2:643-651. [PMID: 27430016 DOI: 10.1021/acsbiomaterials.6b00036] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Matrix and cellular alignment are critical factors in the native function of many tissues, including muscle, nerve, and ligaments. Collagen is frequently a component of these aligned tissues, and collagen biomaterials are widely used in tissue engineering applications. However, the generation of aligned collagen scaffolds that maintain the native architecture of collagen fibrils has not been straightforward, with many methods requiring specialized equipment or technical procedures, extensive incubation times, or denaturing of the collagen. Herein, we present a simple, rapid method for fabrication of highly aligned collagen scaffolds. Collagen was assembled to form a fibrillar hydrogel in a cylindrical conduit with high aspect ratio and then frozen and lyophilized. The resulting collagen scaffolds demonstrated highly aligned topographical features along the scaffold surface. This presence of an initial fibrillar network and the high-aspect ratio vessel were both required to generate alignment. The diameter of fabricated scaffolds was found to vary significantly with both the collagen concentration of the hydrogel suspension and the diameter of conduits used for fabrication. Additionally, the size of individual aligned topographical features was significantly dependent on the conduit diameter and the freezing temperature. When cultured on aligned collagen scaffolds, both rat dermal fibroblasts and axons emerging from chick dorsal root ganglia explants demonstrated elongated, aligned morphology and growth on the aligned topographical features. Overall, this method presents a simple means for generating aligned collagen scaffolds that can be applied to a wide variety of tissue types, particularly those where such alignment is critical to native function.
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Affiliation(s)
- Christopher J Lowe
- Department of Biomedical Engineering, Rutgers, The State University of New Jersey, 599 Taylor Road, Piscataway, New Jersey 08854, United States
| | - Ian M Reucroft
- Department of Biomedical Engineering, Rutgers, The State University of New Jersey, 599 Taylor Road, Piscataway, New Jersey 08854, United States
| | - Matthew C Grota
- Department of Bioengineering, University of Massachusetts Dartmouth, 285 Old Westport Road, Dartmouth, Massachusetts 02747, United States
| | - David I Shreiber
- Department of Biomedical Engineering, Rutgers, The State University of New Jersey, 599 Taylor Road, Piscataway, New Jersey 08854, United States
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32
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Esrafilzadeh D, Jalili R, Liu X, Gilmore KJ, Razal JM, Moulton SE, Wallace GG. A novel and facile approach to fabricate a conductive and biomimetic fibrous platform with sub-micron and micron features. J Mater Chem B 2016; 4:1056-1063. [DOI: 10.1039/c5tb02237a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
A novel and facile method to fabricate a core–shell structure consisting of a conducting fiber core and an electrospun fiber shell is presented.
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Affiliation(s)
- Dorna Esrafilzadeh
- ARC Centre of Excellence for Electromaterials Science
- Intelligent Polymer Research Institute
- University of Wollongong
- Wollongong
- Australia
| | - Rohoullah Jalili
- ARC Centre of Excellence for Electromaterials Science
- Intelligent Polymer Research Institute
- University of Wollongong
- Wollongong
- Australia
| | - Xiao Liu
- ARC Centre of Excellence for Electromaterials Science
- Intelligent Polymer Research Institute
- University of Wollongong
- Wollongong
- Australia
| | - Kerry J. Gilmore
- ARC Centre of Excellence for Electromaterials Science
- Intelligent Polymer Research Institute
- University of Wollongong
- Wollongong
- Australia
| | - Joselito M. Razal
- ARC Centre of Excellence for Electromaterials Science
- Intelligent Polymer Research Institute
- University of Wollongong
- Wollongong
- Australia
| | - Simon E. Moulton
- ARC Centre of Excellence for Electromaterials Science
- Intelligent Polymer Research Institute
- University of Wollongong
- Wollongong
- Australia
| | - Gordon G. Wallace
- ARC Centre of Excellence for Electromaterials Science
- Intelligent Polymer Research Institute
- University of Wollongong
- Wollongong
- Australia
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