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Kieda J, Shakeri A, Landau S, Wang EY, Zhao Y, Lai BF, Okhovatian S, Wang Y, Jiang R, Radisic M. Advances in cardiac tissue engineering and heart-on-a-chip. J Biomed Mater Res A 2024; 112:492-511. [PMID: 37909362 PMCID: PMC11213712 DOI: 10.1002/jbm.a.37633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 09/26/2023] [Accepted: 10/13/2023] [Indexed: 11/03/2023]
Abstract
Recent advances in both cardiac tissue engineering and hearts-on-a-chip are grounded in new biomaterial development as well as the employment of innovative fabrication techniques that enable precise control of the mechanical, electrical, and structural properties of the cardiac tissues being modelled. The elongated structure of cardiomyocytes requires tuning of substrate properties and application of biophysical stimuli to drive its mature phenotype. Landmark advances have already been achieved with induced pluripotent stem cell-derived cardiac patches that advanced to human testing. Heart-on-a-chip platforms are now commonly used by a number of pharmaceutical and biotechnology companies. Here, we provide an overview of cardiac physiology in order to better define the requirements for functional tissue recapitulation. We then discuss the biomaterials most commonly used in both cardiac tissue engineering and heart-on-a-chip, followed by the discussion of recent representative studies in both fields. We outline significant challenges common to both fields, specifically: scalable tissue fabrication and platform standardization, improving cellular fidelity through effective tissue vascularization, achieving adult tissue maturation, and ultimately developing cryopreservation protocols so that the tissues are available off the shelf.
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Affiliation(s)
- Jennifer Kieda
- Institute of Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada
- Toronto General Hospital Research Institute, University Health Network, Toronto, Ontario, Canada
- Terrence Donnelly Centre for Cellular & Biomolecular Research, University of Toronto, Toronto, Ontario, Canada
| | - Amid Shakeri
- Institute of Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada
- Toronto General Hospital Research Institute, University Health Network, Toronto, Ontario, Canada
- Terrence Donnelly Centre for Cellular & Biomolecular Research, University of Toronto, Toronto, Ontario, Canada
| | - Shira Landau
- Institute of Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada
- Toronto General Hospital Research Institute, University Health Network, Toronto, Ontario, Canada
- Terrence Donnelly Centre for Cellular & Biomolecular Research, University of Toronto, Toronto, Ontario, Canada
| | - Erika Yan Wang
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Yimu Zhao
- Institute of Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada
- Toronto General Hospital Research Institute, University Health Network, Toronto, Ontario, Canada
| | - Benjamin Fook Lai
- Institute of Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada
- Toronto General Hospital Research Institute, University Health Network, Toronto, Ontario, Canada
- Terrence Donnelly Centre for Cellular & Biomolecular Research, University of Toronto, Toronto, Ontario, Canada
| | - Sargol Okhovatian
- Institute of Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada
- Toronto General Hospital Research Institute, University Health Network, Toronto, Ontario, Canada
- Terrence Donnelly Centre for Cellular & Biomolecular Research, University of Toronto, Toronto, Ontario, Canada
| | - Ying Wang
- Institute of Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada
- Toronto General Hospital Research Institute, University Health Network, Toronto, Ontario, Canada
- Terrence Donnelly Centre for Cellular & Biomolecular Research, University of Toronto, Toronto, Ontario, Canada
| | - Richard Jiang
- Institute of Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada
- Toronto General Hospital Research Institute, University Health Network, Toronto, Ontario, Canada
- Terrence Donnelly Centre for Cellular & Biomolecular Research, University of Toronto, Toronto, Ontario, Canada
| | - Milica Radisic
- Institute of Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada
- Toronto General Hospital Research Institute, University Health Network, Toronto, Ontario, Canada
- Terrence Donnelly Centre for Cellular & Biomolecular Research, University of Toronto, Toronto, Ontario, Canada
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario, Canada
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2
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Tian Y, Wang L. Microfiber-Patterned Versatile Perfusable Vascular Networks. MICROMACHINES 2023; 14:2201. [PMID: 38138370 PMCID: PMC10745573 DOI: 10.3390/mi14122201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 11/29/2023] [Accepted: 11/30/2023] [Indexed: 12/24/2023]
Abstract
Rapid construction of versatile perfusable vascular networks in vitro with cylindrical channels still remains challenging. Here, a microfiber-patterned method is developed to precisely fabricate versatile well-controlled perfusable vascular networks with cylindrical channels. This method uses tensile microfibers as an easy-removable template to rapidly generate cylindrical-channel chips with one-dimensional, two-dimensional, three-dimensional and multilayered structures, enabling the independent and precise control over the vascular geometry. These perfusable and cytocompatible chips have great potential to mimic vascular networks. The inner surfaces of a three-dimensional vascular network are lined with the human umbilical vein endothelial cells (HUVECs) to imitate the endothelialization of a human blood vessel. The results show that HUVECs attach well on the inner surface of channels and form endothelial tubular lumens with great cell viability. The simple, rapid and low-cost technique for versatile perfusable vascular networks offers plenty of promising opportunities for microfluidics, tissue engineering, clinical medicine and drug development.
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Affiliation(s)
- Ye Tian
- College of Medicine and Biological Information Engineering, Northeastern University, Shenyang 110169, China
- Foshan Graduate School of Innovation, Northeastern University, Foshan 528300, China
| | - Liqiu Wang
- Department of Mechanical Engineering, The Hong Kong Polytechnic University, Hong Kong, China
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3
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Bagdasarian IA, Tonmoy TI, Park BH, Morgan JT. In vitro formation and extended culture of highly metabolically active and contractile tissues. PLoS One 2023; 18:e0293609. [PMID: 37910543 PMCID: PMC10619834 DOI: 10.1371/journal.pone.0293609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Accepted: 10/16/2023] [Indexed: 11/03/2023] Open
Abstract
3D cell culture models have gained popularity in recent years as an alternative to animal and 2D cell culture models for pharmaceutical testing and disease modeling. Polydimethylsiloxane (PDMS) is a cost-effective and accessible molding material for 3D cultures; however, routine PDMS molding may not be appropriate for extended culture of contractile and metabolically active tissues. Failures can include loss of culture adhesion to the PDMS mold and limited culture surfaces for nutrient and waste diffusion. In this study, we evaluated PDMS molding materials and surface treatments for highly contractile and metabolically active 3D cell cultures. PDMS functionalized with polydopamine allowed for extended culture duration (14.8 ± 3.97 days) when compared to polyethylamine/glutaraldehyde functionalization (6.94 ± 2.74 days); Additionally, porous PDMS extended culture duration (16.7 ± 3.51 days) compared to smooth PDMS (6.33 ± 2.05 days) after treatment with TGF-β2 to increase culture contraction. Porous PDMS additionally allowed for large (13 mm tall × 8 mm diameter) constructs to be fed by diffusion through the mold, resulting in increased cell density (0.0210 ± 0.0049 mean nuclear fraction) compared to controls (0.0045 ± 0.0016 mean nuclear fraction). As a practical demonstration of the flexibility of porous PDMS, we engineered a vascular bioartificial muscle model (VBAM) and demonstrated extended culture of VBAMs anchored with porous PDMS posts. Using this model, we assessed the effect of feeding frequency on VBAM cellularity. Feeding 3×/week significantly increased nuclear fraction at multiple tissue depths relative to 2×/day. VBAM maturation was similarly improved in 3×/week feeding as measured by nuclear alignment (23.49° ± 3.644) and nuclear aspect ratio (2.274 ± 0.0643) relative to 2x/day (35.93° ± 2.942) and (1.371 ± 0.1127), respectively. The described techniques are designed to be simple and easy to implement with minimal training or expense, improving access to dense and/or metabolically active 3D cell culture models.
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Affiliation(s)
- Isabella A. Bagdasarian
- Department of Bioengineering, University of California, Riverside, CA, United States of America
| | - Thamidul Islam Tonmoy
- Department of Bioengineering, University of California, Riverside, CA, United States of America
| | - B. Hyle Park
- Department of Bioengineering, University of California, Riverside, CA, United States of America
| | - Joshua T. Morgan
- Department of Bioengineering, University of California, Riverside, CA, United States of America
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Wang S, Bai L, Hu X, Yao S, Hao Z, Zhou J, Li X, Lu H, He J, Wang L, Li D. 3D Bioprinting of Neurovascular Tissue Modeling with Collagen-Based Low-Viscosity Composites. Adv Healthc Mater 2023; 12:e2300004. [PMID: 37264745 DOI: 10.1002/adhm.202300004] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2023] [Revised: 05/27/2023] [Indexed: 06/03/2023]
Abstract
In vitro neurovascular unit (NVU) models are valuable for investigating brain functions and developing drugs. However, it remains challenging to recapitulate the native architectural features and ultra-soft extracellular matrix (ECM) properties of the natural NVU. Cell-laden bioprinting is promising to prepare complex living tissues, but hard to balance the fidelity and cell growth. This study proposes a novel two-stage methodology for biomanufacturing functional 3D neurovascular constructs in vitro with low modulus of ECM. At the shaping stage, a low-viscosity alginate/collagen is printed through an embedded approach; at the culturing stage, the alginate is removed through targeted lysing. The low-viscosity and rapid crosslinking properties provide a printing resolution of ≈10 µm, and the lysis processing can decrease the hydrogels' modulus to ≈1 kPa and adjust the porosity of the microstructure, providing cells with an environment closing to the brain ECM. A 3D hollow coaxial neurovascular model is fabricated, in which the endothelial cells has expressed tight junction proteins and shown selective permeability, and the astrocytes outside of the endothelial layer are found to spread out with branches and directly interact with endothelial cells. The present study offers a promising modeling method for better understanding the NVU function and screening neuro-drugs.
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Affiliation(s)
- Sen Wang
- State Key Laboratory for Manufacturing System Engineering, Xi'an Jiaotong University, Xi'an, 710054, China
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, 710054, China
- NMPA Key Laboratory for Research and Evaluation of Additive Manufacturing Medical Devices, Xi'an, 710054, China
| | - Luge Bai
- State Key Laboratory for Manufacturing System Engineering, Xi'an Jiaotong University, Xi'an, 710054, China
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, 710054, China
- NMPA Key Laboratory for Research and Evaluation of Additive Manufacturing Medical Devices, Xi'an, 710054, China
| | - Xiaoxuan Hu
- Institute of Neurobiology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, 710061, China
- Key Laboratory of Ministry of Education for Environment and Genes Related to Diseases, Xi'an Jiaotong University Health Science Center, Xi'an, 710061, China
| | - Siqi Yao
- State Key Laboratory for Manufacturing System Engineering, Xi'an Jiaotong University, Xi'an, 710054, China
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, 710054, China
- NMPA Key Laboratory for Research and Evaluation of Additive Manufacturing Medical Devices, Xi'an, 710054, China
| | - Zhiyan Hao
- State Key Laboratory for Manufacturing System Engineering, Xi'an Jiaotong University, Xi'an, 710054, China
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, 710054, China
- NMPA Key Laboratory for Research and Evaluation of Additive Manufacturing Medical Devices, Xi'an, 710054, China
| | - JiaJia Zhou
- State Key Laboratory for Manufacturing System Engineering, Xi'an Jiaotong University, Xi'an, 710054, China
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, 710054, China
- NMPA Key Laboratory for Research and Evaluation of Additive Manufacturing Medical Devices, Xi'an, 710054, China
| | - Xiao Li
- State Key Laboratory for Manufacturing System Engineering, Xi'an Jiaotong University, Xi'an, 710054, China
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, 710054, China
- NMPA Key Laboratory for Research and Evaluation of Additive Manufacturing Medical Devices, Xi'an, 710054, China
| | - Haixia Lu
- Institute of Neurobiology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, 710061, China
- Key Laboratory of Ministry of Education for Environment and Genes Related to Diseases, Xi'an Jiaotong University Health Science Center, Xi'an, 710061, China
- Department of Human Anatomy & Histoembryology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, 710061, China
| | - Jiankang He
- State Key Laboratory for Manufacturing System Engineering, Xi'an Jiaotong University, Xi'an, 710054, China
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, 710054, China
- NMPA Key Laboratory for Research and Evaluation of Additive Manufacturing Medical Devices, Xi'an, 710054, China
| | - Ling Wang
- State Key Laboratory for Manufacturing System Engineering, Xi'an Jiaotong University, Xi'an, 710054, China
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, 710054, China
- NMPA Key Laboratory for Research and Evaluation of Additive Manufacturing Medical Devices, Xi'an, 710054, China
| | - Dichen Li
- State Key Laboratory for Manufacturing System Engineering, Xi'an Jiaotong University, Xi'an, 710054, China
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, 710054, China
- NMPA Key Laboratory for Research and Evaluation of Additive Manufacturing Medical Devices, Xi'an, 710054, China
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Raj M K, Priyadarshani J, Karan P, Bandyopadhyay S, Bhattacharya S, Chakraborty S. Bio-inspired microfluidics: A review. BIOMICROFLUIDICS 2023; 17:051503. [PMID: 37781135 PMCID: PMC10539033 DOI: 10.1063/5.0161809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Accepted: 09/01/2023] [Indexed: 10/03/2023]
Abstract
Biomicrofluidics, a subdomain of microfluidics, has been inspired by several ideas from nature. However, while the basic inspiration for the same may be drawn from the living world, the translation of all relevant essential functionalities to an artificially engineered framework does not remain trivial. Here, we review the recent progress in bio-inspired microfluidic systems via harnessing the integration of experimental and simulation tools delving into the interface of engineering and biology. Development of "on-chip" technologies as well as their multifarious applications is subsequently discussed, accompanying the relevant advancements in materials and fabrication technology. Pointers toward new directions in research, including an amalgamated fusion of data-driven modeling (such as artificial intelligence and machine learning) and physics-based paradigm, to come up with a human physiological replica on a synthetic bio-chip with due accounting of personalized features, are suggested. These are likely to facilitate physiologically replicating disease modeling on an artificially engineered biochip as well as advance drug development and screening in an expedited route with the minimization of animal and human trials.
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Affiliation(s)
- Kiran Raj M
- Department of Applied Mechanics and Biomedical Engineering, Indian Institute of Technology Madras, Chennai, Tamil Nadu 600036, India
| | - Jyotsana Priyadarshani
- Department of Mechanical Engineering, Biomechanics Section (BMe), KU Leuven, Celestijnenlaan 300, 3001 Louvain, Belgium
| | - Pratyaksh Karan
- Géosciences Rennes Univ Rennes, CNRS, Géosciences Rennes, UMR 6118, 35000 Rennes, France
| | - Saumyadwip Bandyopadhyay
- Advanced Technology Development Centre, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721302, India
| | - Soumya Bhattacharya
- Achira Labs Private Limited, 66b, 13th Cross Rd., Dollar Layout, 3–Phase, JP Nagar, Bangalore, Karnataka 560078, India
| | - Suman Chakraborty
- Department of Mechanical Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721302, India
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6
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Fuenteslópez CV, Thompson MS, Ye H. Development and Optimisation of Hydrogel Scaffolds for Microvascular Network Formation. Bioengineering (Basel) 2023; 10:964. [PMID: 37627849 PMCID: PMC10451297 DOI: 10.3390/bioengineering10080964] [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: 07/01/2023] [Revised: 08/04/2023] [Accepted: 08/08/2023] [Indexed: 08/27/2023] Open
Abstract
Traumatic injuries are a major cause of morbidity and mortality worldwide; however, there is limited research on microvascular traumatic injuries. To address this gap, this research aims to develop and optimise an in vitro construct for traumatic injury research at the microvascular level. Tissue engineering constructs were created using a range of polymers (collagen, fibrin, and gelatine), solvents (PBS, serum-free endothelial media, and MES/NaCl buffer), and concentrations (1-5% w/v). Constructs created from these hydrogels and HUVECs were evaluated to identify the optimal composition in terms of cell proliferation, adhesion, migration rate, viability, hydrogel consistency and shape retention, and tube formation. Gelatine hydrogels were associated with a lower cell adhesion, whereas fibrin and collagen ones displayed similar or better results than the control, and collagen hydrogels exhibited poor shape retention; fibrin scaffolds, particularly at high concentrations, displayed good hydrogel consistency. Based on the multipronged evaluation, fibrin hydrogels in serum-free media at 3 and 5% w/v were selected for further experimental work and enabled the formation of interconnected capillary-like networks. The networks formed in both hydrogels displayed a similar architecture in terms of the number of segments (10.3 ± 3.21 vs. 9.6 ± 3.51) and diameter (8.6446 ± 3.0792 μm vs. 7.8599 ± 2.3794 μm).
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Affiliation(s)
| | | | - Hua Ye
- Institute of Biomedical Engineering, University of Oxford, Oxford OX3 7DQ, UK; (C.V.F.); (M.S.T.)
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7
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Lou Y, Sun M, Zhang J, Wang Y, Ma H, Sun Z, Li S, Weng X, Ying B, Liu C, Yu M, Wang H. Ultraviolet Light-Based Micropattern Printing on Titanium Surfaces to Promote Early Osseointegration. Adv Healthc Mater 2023; 12:e2203300. [PMID: 37119120 DOI: 10.1002/adhm.202203300] [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: 12/19/2022] [Revised: 04/24/2023] [Indexed: 04/30/2023]
Abstract
Patterned interfaces are widely used for surface modification of biomaterials because of a morphological unit similar to that of native tissue. However, engineering fast and cost-effective high-resolution micropatterns directly onto titanium surfaces remains a grand challenge. Herein, a simply designed ultraviolet (UV) light-based micropattern printing to obtain geometrical patterns on implant interfaces is fabricated by utilizing customized photomasks and titanium dioxide (TiO2 ) nanorods as a photo-responsive platform. The technique manipulates the cytoskeleton of micropatterning cells on the surface of TiO2 nanorods. The linear pattern surface shows the elongated morphology and parallel linear arrangements of human mesenchymal stem cells (hMSCs), significantly enhancing their osteogenic differentiation. In addition to the upregulated expression of key osteo-specific function genes in vitro, the accelerated osseointegration between the implant and the host bone is obtained in vivo. Further investigation indicates that the developed linear pattern surface has an outstanding effect on the cytoskeletal system, and finally activates Yes-Associated Protein (YAP)-mediated mechanotransduction pathways, initiating hMSCs osteogenic differentiation. This study not only offers a microfabrication method that can be extended to fabricate various shape- and size-controlled micropatterns on titanium surfaces, but also provides insight into the surface structure design for enhanced bone regeneration.
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Affiliation(s)
- Yiting Lou
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, 395 Yan'an road, Hangzhou, Zhejiang, 310000, China
| | - Mouyuan Sun
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, 395 Yan'an road, Hangzhou, Zhejiang, 310000, China
| | - Jingyu Zhang
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, 395 Yan'an road, Hangzhou, Zhejiang, 310000, China
| | - Yu Wang
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, 395 Yan'an road, Hangzhou, Zhejiang, 310000, China
| | - Haiying Ma
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, 395 Yan'an road, Hangzhou, Zhejiang, 310000, China
| | - Zheyuan Sun
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, 395 Yan'an road, Hangzhou, Zhejiang, 310000, China
| | - Shengjie Li
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, 395 Yan'an road, Hangzhou, Zhejiang, 310000, China
- Department of Stomatology, The First Affiliated Hospital of Ningbo University, 59 Liuting street, Ningbo, Zhejiang, 315000, China
| | - Xiaoyan Weng
- The Third Affiliated Hospital of Wenzhou Medical University (Ruian People's Hospital), 168 Ruifeng Avenue, Wenzhou, Zhejiang, 325016, China
| | - Binbin Ying
- Department of Stomatology, The First Affiliated Hospital of Ningbo University, 59 Liuting street, Ningbo, Zhejiang, 315000, China
| | - Chao Liu
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, 395 Yan'an road, Hangzhou, Zhejiang, 310000, China
| | - Mengfei Yu
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, 395 Yan'an road, Hangzhou, Zhejiang, 310000, China
| | - Huiming Wang
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, 395 Yan'an road, Hangzhou, Zhejiang, 310000, China
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8
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González-Lana S, Randelovic T, Ciriza J, López-Valdeolivas M, Monge R, Sánchez-Somolinos C, Ochoa I. Surface modifications of COP-based microfluidic devices for improved immobilisation of hydrogel proteins: long-term 3D culture with contractile cell types and ischaemia model. LAB ON A CHIP 2023; 23:2434-2446. [PMID: 37013698 DOI: 10.1039/d3lc00075c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
The tissue microenvironment plays a crucial role in tissue homeostasis and disease progression. However, the in vitro simulation has been limited by the lack of adequate biomimetic models in the last decades. Thanks to the advent of microfluidic technology for cell culture applications, these complex microenvironments can be recreated by combining hydrogels, cells and microfluidic devices. Nevertheless, this advance has several limitations. When cultured in three-dimensional (3D) hydrogels inside microfluidic devices, contractile cells may exert forces that eventually collapse the 3D structure. Disrupting the compartmentalisation creates an obstacle to long-term or highly cell-concentrated assays, which are extremely relevant for multiple applications such as fibrosis or ischaemia. Therefore, we tested surface treatments on cyclic-olefin polymer-based microfluidic devices (COP-MD) to promote the immobilisation of collagen as a 3D matrix protein. Thus, we compared three surface treatments in COP devices for culturing human cardiac fibroblasts (HCF) embedded in collagen hydrogels. We determined the immobilisation efficiency of collagen hydrogel by quantifying the hydrogel transversal area within the devices at the studied time points. Altogether, our results indicated that surface modification with polyacrylic acid photografting (PAA-PG) of COP-MD is the most effective treatment to avoid the quick collapse of collagen hydrogels. As a proof-of-concept experiment, and taking advantage of the low-gas permeability properties of COP-MD, we studied the application of PAA-PG pre-treatment to generate a self-induced ischaemia model. Different necrotic core sizes were developed depending on initial HCF density seeding with no noticeable gel collapse. We conclude that PAA-PG allows long-term culture, gradient generation and necrotic core formation of contractile cell types such as myofibroblasts. This novel approach will pave the way for new relevant in vitro co-culture models where fibroblasts play a key role such as wound healing, tumour microenvironment and ischaemia within microfluidic devices.
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Affiliation(s)
- Sandra González-Lana
- Tissue Microenvironment (TME) Lab. Aragón Institute of Engineering Research (I3A), University of Zaragoza, C/ Mariano Esquillor s/n, 500018 Zaragoza, Spain.
- BEONCHIP S.L., CEMINEM, Campus Río Ebro. C/ Mariano Esquillor Gómez s/n, 50018 Zaragoza, Spain
| | - Teodora Randelovic
- Tissue Microenvironment (TME) Lab. Aragón Institute of Engineering Research (I3A), University of Zaragoza, C/ Mariano Esquillor s/n, 500018 Zaragoza, Spain.
- Institute for Health Research Aragón (IIS Aragón), Paseo de Isabel La Católica 1-3, 50009 Zaragoza, Spain
- CIBER in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain
| | - Jesús Ciriza
- Tissue Microenvironment (TME) Lab. Aragón Institute of Engineering Research (I3A), University of Zaragoza, C/ Mariano Esquillor s/n, 500018 Zaragoza, Spain.
- Institute for Health Research Aragón (IIS Aragón), Paseo de Isabel La Católica 1-3, 50009 Zaragoza, Spain
| | - María López-Valdeolivas
- Aragón Institute of Nanoscience and Materials (INMA), Department of Condensed Matter Physics (Faculty of Science), CSIC-University of Zaragoza, C/ Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Rosa Monge
- BEONCHIP S.L., CEMINEM, Campus Río Ebro. C/ Mariano Esquillor Gómez s/n, 50018 Zaragoza, Spain
| | - Carlos Sánchez-Somolinos
- CIBER in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain
- Aragón Institute of Nanoscience and Materials (INMA), Department of Condensed Matter Physics (Faculty of Science), CSIC-University of Zaragoza, C/ Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Ignacio Ochoa
- Tissue Microenvironment (TME) Lab. Aragón Institute of Engineering Research (I3A), University of Zaragoza, C/ Mariano Esquillor s/n, 500018 Zaragoza, Spain.
- Institute for Health Research Aragón (IIS Aragón), Paseo de Isabel La Católica 1-3, 50009 Zaragoza, Spain
- CIBER in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain
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9
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Mu X, Gerhard-Herman MD, Zhang YS. Building Blood Vessel Chips with Enhanced Physiological Relevance. ADVANCED MATERIALS TECHNOLOGIES 2023; 8:2201778. [PMID: 37693798 PMCID: PMC10489284 DOI: 10.1002/admt.202201778] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Indexed: 09/12/2023]
Abstract
Blood vessel chips are bioengineered microdevices, consisting of biomaterials, human cells, and microstructures, which recapitulate essential vascular structure and physiology and allow a well-controlled microenvironment and spatial-temporal readouts. Blood vessel chips afford promising opportunities to understand molecular and cellular mechanisms underlying a range of vascular diseases. The physiological relevance is key to these blood vessel chips that rely on bioinspired strategies and bioengineering approaches to translate vascular physiology into artificial units. Here, we discuss several critical aspects of vascular physiology, including morphology, material composition, mechanical properties, flow dynamics, and mass transport, which provide essential guidelines and a valuable source of bioinspiration for the rational design of blood vessel chips. We also review state-of-art blood vessel chips that exhibit important physiological features of the vessel and reveal crucial insights into the biological processes and disease pathogenesis, including rare diseases, with notable implications for drug screening and clinical trials. We envision that the advances in biomaterials, biofabrication, and stem cells improve the physiological relevance of blood vessel chips, which, along with the close collaborations between clinicians and bioengineers, enable their widespread utility.
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Affiliation(s)
- Xuan Mu
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA 02139, USA; Roy J. Carver Department of Biomedical Engineering, College of Engineering, University of Iowa, Iowa City, IA 52242, USA
| | - Marie Denise Gerhard-Herman
- Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02114, USA
| | - Yu Shrike Zhang
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA 02139, USA
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10
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Multi-pin contact drawing enables production of anisotropic collagen fiber substrates for alignment of fibroblasts and monocytes. Colloids Surf B Biointerfaces 2022; 215:112525. [PMID: 35500531 DOI: 10.1016/j.colsurfb.2022.112525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 04/19/2022] [Accepted: 04/25/2022] [Indexed: 11/22/2022]
Abstract
Type I collagen is the most abundant protein in the human body and is known to play important roles in numerous biological processes including tissue morphogenesis and wound healing. As such, it is one of the most frequently used substrates for cell culture, and there have been considerable efforts to develop collagen-based cell culture substrates that mimic the structural organization of collagen as it is found in native tissues, i.e., collagen fibers. However, producing collagen fibers from extracted collagen has been notoriously difficult, with existing methods providing only low throughput production of collagen fibers. In this study, we prepared collagen fibers using a highly efficient, bio-friendly, and cost-effective approach termed contact drawing, which uses an entangled polymer fluid to aid in fiber formation. Contact drawing technology has been demonstrated previously for collagen using highly concentrated dextran solutions with low concentrations of collagen. Here, we show that by replacing dextran with polyethylene oxide (PEO), high collagen content fibers may be readily formed from mixtures of soluble collagen and PEO, a polymer that readily forms fibers by contact drawing at concentrations as low as 0.5%wt. The presence of collagen and the formation of well-ordered collagen structures in the resulting fibers were characterized by attenuated total reflectance Fourier-transform infrared spectromicroscopy, Raman spectromicroscopy, and fluorescence microscopy. Corresponding to well-ordered collagen, the mechanical properties of the PEO-collagen fibers approximated those observed for native collagen fibers. Growth of cells on aligned PEO-collagen fibers attached to a polydimethyl siloxane support was examined for human dermal fibroblast (WS1) and human peripheral leukemia blood monocyte (THP-1) cell lines. WS1 and THP-1 cells readily attached, displayed alignment through migration and spreading, and proliferated on the collagen fiber substrate over the course of several days. We also demonstrated the retrieval of viable cells from the PEO-collagen fiber substrates through enzymatic digestion of the collagen substrate with collagenase IV.
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11
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Horst EN, Novak CM, Burkhard K, Snyder CS, Verma R, Crochran DE, Geza IA, Fermanich W, Mehta P, Schlautman DC, Tran LA, Brezenger ME, Mehta G. Injectable three-dimensional tumor microenvironments to study mechanobiology in ovarian cancer. Acta Biomater 2022; 146:222-234. [PMID: 35487424 PMCID: PMC10538942 DOI: 10.1016/j.actbio.2022.04.039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 04/19/2022] [Accepted: 04/21/2022] [Indexed: 11/16/2022]
Abstract
Epithelial ovarian cancers are among the most aggressive forms of gynecological malignancies. Despite the advent of poly adenosine diphosphate-ribose polymerase (PARP) and checkpoint inhibitors, improvement to patient survival has been modest. Limited in part by clinical translation, beneficial therapeutic strategies remain elusive in ovarian cancers. Although elevated levels of extracellular proteins, including collagens, proteoglycans, and glycoproteins, have been linked to chemoresistance, they are often missing from the processes of drug- development and screening. Biophysical and biochemical signaling from the extracellular matrix (ECM) determine cellular phenotype and affect both tumor progression and therapeutic response. However, many state-of-the-art tumor models fail to mimic the complexities of the tumor microenvironment (TME) and omit key signaling components. In this article, two interpenetrating network (IPN) hydrogel scaffold platforms, comprising of alginate-collagen or agarose-collagen, have been characterized for use as 3D in vitro models of epithelial ovarian cancer ECM. These highly tunable, injection mold compatible, and inexpensive IPNs replicate the critical governing physical and chemical signaling present within the ovarian TME. Additionally, an effective and cell-friendly live-cell retrieval method has been established to recover cells post-encapsulation. Lastly, functional mechanotransduction in ovarian cancers was demonstrated by increasing scaffold stiffness within the 3D in vitro ECM models. With these features, the agarose-collagen and alginate-collagen hydrogels provide a robust TME for the study of mechanobiology in epithelial cancers. STATEMENT OF SIGNIFICANCE: Ovarian cancer is the most lethal gynecologic cancer afflicting women today. Here we present the development, characterization, and validation of 3D interpenetrating platforms to shift the paradigm in standard in vitro modeling. These models help elucidate the roles of biophysical and biochemical cues in ovarian cancer progression. The agarose-collagen and alginate-collagen interpenetrating network (IPN) hydrogels are simple to fabricate, inexpensive, and can be modified to create custom mechanical stiffnesses and concentrations of bio-adhesive motifs. Given that investigations into the roles of biophysical characteristics in ovarian cancers have provided incongruent results, we believe that the IPN platforms will be critically important to uncovering molecular drivers. We also expect these platforms to be broadly applicable to studies involving mechanobiology in solid tumors.
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Affiliation(s)
- Eric N Horst
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, United States
| | - Caymen M Novak
- Department of Internal Medicine, Division of Pulmonary, Critical Care and Sleep Medicine, The Ohio State University Wexner College of Medicine, Columbus, OH 43210, United States
| | - Kathleen Burkhard
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, United States
| | - Catherine S Snyder
- Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI 48109, United States
| | - Rhea Verma
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, United States
| | - Darel E Crochran
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, United States
| | - Izabella A Geza
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, United States
| | - Wesley Fermanich
- Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI 48109, United States
| | - Pooja Mehta
- Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI 48109, United States
| | - Denise C Schlautman
- Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI 48109, United States
| | - Linh A Tran
- Department of Chemical Engineering, University of Michigan, Ann Arbor, MI 48109, United States
| | - Michael E Brezenger
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, United States
| | - Geeta Mehta
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, United States; Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI 48109, United States; Macromolecular Science and Engineering, University of Michigan, Ann Arbor, MI 48109, United States; Rogel Cancer Center, University of Michigan, Ann Arbor, MI 48109, United States; Precision Health, University of Michigan, Ann Arbor, MI 48109, United States.
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12
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Bouhlel W, Kui J, Bibette J, Bremond N. Encapsulation of Cells in a Collagen Matrix Surrounded by an Alginate Hydrogel Shell for 3D Cell Culture. ACS Biomater Sci Eng 2022; 8:2700-2708. [PMID: 35609296 DOI: 10.1021/acsbiomaterials.1c01486] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Numerous techniques for mammalian cell culture have been developed to mimic the complex in vivo three-dimensional structure of tissues and organs. Among them, the sole use of proteins to create a matrix where cells are embedded already gives rise to self-organized multicellular assemblies. Loading cells in a controlled extracellular matrix along with cell culture and monitoring through a strategy that is compatible with pipetting tools would be beneficial for high throughput screening applications or simply for a standardized method. Here, we design submillimeter compartments having a thin alginate hydrogel shell and a core made of a collagen matrix where cells are embedded. The process, using a microfluidic device, is based on a high speed co-extrusion in air, leading to a compound jet whose fragmentation is controlled. The resulting core-shell liquid drops are then collected in a gelling bath that triggers a fast hardening of the shell and is followed by a slower self-assembly of collagen molecules into fibers. We show how to formulate the core solution in order to maintain cell viability at physiological conditions that otherwise induce tropocollagen molecules to self-assemble, while being able to prevent flow disturbances that are detrimental for this jetting method. Encapsulated Caco-2 cells, mainly used to model the intestinal barrier, proliferate and form a closed polarized epithelial cell monolayer where the apical membrane faces the continuous medium.
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Affiliation(s)
- Wafa Bouhlel
- Laboratoire Colloïdes et Matériaux Divisés, CBI, ESPCI Paris, Université PSL, CNRS, 10 rue Vauquelin, F-75005 Paris, France.,Sorbonne University, 4 place Jussieu, F-75005 Paris, France
| | - Jessica Kui
- Laboratoire Colloïdes et Matériaux Divisés, CBI, ESPCI Paris, Université PSL, CNRS, 10 rue Vauquelin, F-75005 Paris, France
| | - Jérôme Bibette
- Laboratoire Colloïdes et Matériaux Divisés, CBI, ESPCI Paris, Université PSL, CNRS, 10 rue Vauquelin, F-75005 Paris, France
| | - Nicolas Bremond
- Laboratoire Colloïdes et Matériaux Divisés, CBI, ESPCI Paris, Université PSL, CNRS, 10 rue Vauquelin, F-75005 Paris, France
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13
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Filippi M, Buchner T, Yasa O, Weirich S, Katzschmann RK. Microfluidic Tissue Engineering and Bio-Actuation. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2108427. [PMID: 35194852 DOI: 10.1002/adma.202108427] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 02/07/2022] [Indexed: 06/14/2023]
Abstract
Bio-hybrid technologies aim to replicate the unique capabilities of biological systems that could surpass advanced artificial technologies. Soft bio-hybrid robots consist of synthetic and living materials and have the potential to self-assemble, regenerate, work autonomously, and interact safely with other species and the environment. Cells require a sufficient exchange of nutrients and gases, which is guaranteed by convection and diffusive transport through liquid media. The functional development and long-term survival of biological tissues in vitro can be improved by dynamic flow culture, but only microfluidic flow control can develop tissue with fine structuring and regulation at the microscale. Full control of tissue growth at the microscale will eventually lead to functional macroscale constructs, which are needed as the biological component of soft bio-hybrid technologies. This review summarizes recent progress in microfluidic techniques to engineer biological tissues, focusing on the use of muscle cells for robotic bio-actuation. Moreover, the instances in which bio-actuation technologies greatly benefit from fusion with microfluidics are highlighted, which include: the microfabrication of matrices, biomimicry of cell microenvironments, tissue maturation, perfusion, and vascularization.
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Affiliation(s)
- Miriam Filippi
- Soft Robotics Laboratory, ETH Zurich, Tannenstrasse 3, Zurich, 8092, Switzerland
| | - Thomas Buchner
- Soft Robotics Laboratory, ETH Zurich, Tannenstrasse 3, Zurich, 8092, Switzerland
| | - Oncay Yasa
- Soft Robotics Laboratory, ETH Zurich, Tannenstrasse 3, Zurich, 8092, Switzerland
| | - Stefan Weirich
- Soft Robotics Laboratory, ETH Zurich, Tannenstrasse 3, Zurich, 8092, Switzerland
| | - Robert K Katzschmann
- Soft Robotics Laboratory, ETH Zurich, Tannenstrasse 3, Zurich, 8092, Switzerland
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14
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Böttcher B, Pflieger A, Schumacher J, Jungnickel B, Feller KH. 3D Bioprinting of Prevascularized Full-Thickness Gelatin-Alginate Structures with Embedded Co-Cultures. Bioengineering (Basel) 2022; 9:bioengineering9060242. [PMID: 35735485 PMCID: PMC9219913 DOI: 10.3390/bioengineering9060242] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 05/15/2022] [Accepted: 05/16/2022] [Indexed: 12/24/2022] Open
Abstract
The use of bioprinting allows the creation of complex three-dimensional cell laden grafts with spatial placements of different cell lines. However, a major challenge is insufficient nutrient transfer, especially with the increased size of the graft causing necrosis and reduced proliferation. A possibility to improve nutrient support is the integration of tubular structures for reducing diffusion paths. In this study the influence of prevascularization in full-thickness grafts on cell growth with a variation of cultivation style and cellular composition was investigated. To perform this, the rheological properties of the used gelatin-alginate hydrogel as well as possibilities to improve growth conditions in the hydrogel were assessed. Prevascularized grafts were manufactured using a pneumatic extrusion-based bioprinter with a coaxial extrusion tool. The prevascularized grafts were statically and dynamically cultured with a monoculture of HepG2 cells. Additionally, a co-culture of HepG2 cells, fibroblasts and HUVEC-TERT2 was created while HUVEC-TERT2s were concentrically placed around the hollow channels. A static culture of prevascularized grafts showed short-term improvements in cell proliferation compared to avascular grafts, while a perfusion-based culture showed improvements in mid-term cultivation times. The cultivation of the co-culture indicated the formation of vascular structures from the hollow channels toward avascular areas. According to these results, the integration of prevascular structures show beneficial effects for the in vitro cultivation of bioprinted grafts for which its impact can be increased in larger grafts.
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Affiliation(s)
- Bastian Böttcher
- Institute for Microsystem and Precision Engineering, Ernst-Abbe University of Applied Science Jena, 07745 Jena, Germany; (B.B.); (A.P.); (J.S.)
| | - Astrid Pflieger
- Institute for Microsystem and Precision Engineering, Ernst-Abbe University of Applied Science Jena, 07745 Jena, Germany; (B.B.); (A.P.); (J.S.)
| | - Jan Schumacher
- Institute for Microsystem and Precision Engineering, Ernst-Abbe University of Applied Science Jena, 07745 Jena, Germany; (B.B.); (A.P.); (J.S.)
| | - Berit Jungnickel
- Department of Cell Biology, Institute of Biochemistry and Biophysics, Faculty of Biological Sciences, Friedrich Schiller University Jena, 07745 Jena, Germany;
| | - Karl-Heinz Feller
- Institute for Microsystem and Precision Engineering, Ernst-Abbe University of Applied Science Jena, 07745 Jena, Germany; (B.B.); (A.P.); (J.S.)
- Correspondence: ; Tel.: +49-3641-205-621
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15
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Sarangthem V, Sharma H, Goel R, Ghose S, Park RW, Mohanty S, Chaudhuri TK, Dinda AK, Singh TD. Application of elastin-like polypeptide (ELP) containing extra-cellular matrix (ECM) binding ligands in regenerative medicine. Int J Biol Macromol 2022; 207:443-453. [PMID: 35276294 DOI: 10.1016/j.ijbiomac.2022.03.018] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Revised: 02/24/2022] [Accepted: 03/03/2022] [Indexed: 12/26/2022]
Abstract
Extracellular matrix (ECM) molecules play an important role in regulating molecular signaling associated with proliferation, migration, differentiation, and tissue repair. The identification of new kinds of ECM mimic biomaterials to recapitulate critical functions of biological systems are important for various applications in tissue engineering and regenerative medicine. The use of human elastin derived materials with controlled biological properties and other functionalities to improve their cell-response was proposed. Herein, we reported genetic encoded synthesis of ELP (elastin-like polypeptide) containing ECM domains like RGD (integrin binding ligand) and YIGSR (laminin-selective receptor binding ligand) to regulate cell behaviour in more complex ways, and also better model natural matrices. Thermal responsiveness of the ELPs and structural conformation were determined to confirm its phase transition behaviour. The fusion ELPs derivatives were analysed for mechanical involvement of growth mechanism, regenerative, and healing processes. The designed fusion ELPs promoted fast and strong attachment of fibroblast cells. The fusion ELP derivatives enhanced the migration of keratinocyte cells which of crucial for wound healing. Together it provides a profound matrix for endothelial cells and significantly enhanced tube formation of HUVEC cells. Thus, strategy of using cell adhesive ELP biopolymer emphasizing the role of bioactive ELPs as next generation skin substitutes for regenerative medicine.
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Affiliation(s)
- Vijaya Sarangthem
- Department of Pathology, All India Institute of Medical Sciences, New Delhi 110029, India.
| | - Harshita Sharma
- Stem Cell Facility, DBT Centre of Excellence for Stem Cell Research, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Ridhima Goel
- Department of Medical Oncology Laboratory, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Sampa Ghose
- Department of Medical Oncology Laboratory, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Rang-Woon Park
- Department of Biochemistry and Cell Biology, Kyungpook National University, School of Medicine, Daegu 41944, Republic of Korea
| | - Sujata Mohanty
- Stem Cell Facility, DBT Centre of Excellence for Stem Cell Research, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Tapan Kumar Chaudhuri
- Kusuma School of Biological Sciences, Indian Institute of Technology Delhi, New Delhi 110016, India
| | - Amit Kumar Dinda
- Department of Pathology, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Thoudam Debraj Singh
- Department of Medical Oncology Laboratory, All India Institute of Medical Sciences, New Delhi 110029, India
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Ahmad Z, Salman S, Khan SA, Amin A, Rahman ZU, Al-Ghamdi YO, Akhtar K, Bakhsh EM, Khan SB. Versatility of Hydrogels: From Synthetic Strategies, Classification, and Properties to Biomedical Applications. Gels 2022; 8:gels8030167. [PMID: 35323280 PMCID: PMC8950628 DOI: 10.3390/gels8030167] [Citation(s) in RCA: 59] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 02/08/2022] [Accepted: 02/24/2022] [Indexed: 12/15/2022] Open
Abstract
Hydrogels are three-dimensional, cross-linked, and supramolecular networks that can absorb significant volumes of water. Hydrogels are one of the most promising biomaterials in the biological and biomedical fields, thanks to their hydrophilic properties, biocompatibility, and wide therapeutic potential. Owing to their nontoxic nature and safe use, they are widely accepted for various biomedical applications such as wound dressing, controlled drug delivery, bone regeneration, tissue engineering, biosensors, and artificial contact lenses. Herein, this review comprises different synthetic strategies for hydrogels and their chemical/physical characteristics, and various analytical, optical, and spectroscopic tools for their characterization are discussed. A range of synthetic approaches is also covered for the synthesis and design of hydrogels. It will also cover biomedical applications such as bone regeneration, tissue engineering, and drug delivery. This review addressed the fundamental, general, and applied features of hydrogels in order to facilitate undergraduates, graduates, biomedical students, and researchers in a variety of domains.
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Affiliation(s)
- Zubair Ahmad
- Department of Chemistry, University of Swabi, Swabi 23561, Pakistan; (Z.A.); (A.A.); (Z.U.R.)
| | - Saad Salman
- Faculty of Pharmacy, Capital University of Science and Technology, Islamabad 44000, Pakistan;
| | - Shahid Ali Khan
- Department of Chemistry, School of Natural Sciences, National University of Science and Technology (NUST), Islamabad 44000, Pakistan
- Correspondence: (S.A.K.); (S.B.K.)
| | - Abdul Amin
- Department of Chemistry, University of Swabi, Swabi 23561, Pakistan; (Z.A.); (A.A.); (Z.U.R.)
| | - Zia Ur Rahman
- Department of Chemistry, University of Swabi, Swabi 23561, Pakistan; (Z.A.); (A.A.); (Z.U.R.)
| | - Youssef O. Al-Ghamdi
- Department of Chemistry, College of Science Al-Zulfi, Majmaah University, Al-Majmaah 11952, Saudi Arabia;
| | - Kalsoom Akhtar
- Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (K.A.); (E.M.B.)
| | - Esraa M. Bakhsh
- Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (K.A.); (E.M.B.)
| | - Sher Bahadar Khan
- Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (K.A.); (E.M.B.)
- Center of Excellence for Advanced Materials Research, King Abdulaziz University, Jeddah 21589, Saudi Arabia
- Correspondence: (S.A.K.); (S.B.K.)
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Analysis of the Research Hotspot of Drug Treatment of Tuberculosis: A Bibliometric Based on the Top 50 Cited Literatures. BIOMED RESEARCH INTERNATIONAL 2022; 2022:9542756. [PMID: 35071602 PMCID: PMC8769855 DOI: 10.1155/2022/9542756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 11/23/2021] [Accepted: 12/18/2021] [Indexed: 02/05/2023]
Abstract
Objective The objective of the current study was to analyze the research hotspot of drug treatment for tuberculosis via top literatures. Materials and Methods A retrospective analysis was performed on June 7th, 2021. Literatures were searched on the Web of Science Core Collection to identify the top 50 cited literatures related to drug treatment of tuberculosis. The characteristics of the literatures were identified. The outcomes included authorship, journal, study type, year of publication, and institution. Cooccurrence network analysis and visualization were conducted using the VOS viewer (Version 1.6.16; Leiden University, Leiden, The Netherlands). Results The top 50 cited literatures were cited 308 to 2689 times and were published between 1982 and 2014. The most studied drugs were the first-line drugs such as isoniazid and rifampicin (n = 22), and drug-resistant tuberculosis was most frequently reported (n = 16). They were published in 18 journals, and the New England Journal of Medicine published the most literatures (n = 18), followed by the American Journal of Respiratory and Critical Care Medicine (n = 7), and the Lancet (n = 6). The authors were from 13 countries, and the authors from the USA published most of the literatures (n = 30), while authors from other countries published less than five literatures. The CDC in the USA (n = 4), the World Health Organization (WHO) (n = 3), and the American Philosophical Society (n = 3) were the leading institutions, and only two authors published at least two top-cited literatures as first authors. Conclusions This study provides insights into the development and most important literatures on drug therapy for tuberculosis and evidence for future research on tuberculosis treatment.
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18
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Rossen NS, Kyrsting A, Giaccia AJ, Erler JT, Oddershede LB. Fiber finding algorithm using stepwise tracing to identify biopolymer fibers in noisy 3D images. Biophys J 2021; 120:3860-3868. [PMID: 34411578 DOI: 10.1016/j.bpj.2021.08.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 05/22/2021] [Accepted: 08/11/2021] [Indexed: 10/20/2022] Open
Abstract
We present a novel fiber finding algorithm (FFA) that will permit researchers to detect and return traces of individual biopolymers. Determining the biophysical properties and structural cues of biopolymers can permit researchers to assess the progression and severity of disease. Confocal microscopy images are a useful method for observing biopolymer structures in three dimensions, but their utility for identifying individual biopolymers is impaired by noise inherent in the acquisition process, including convolution from the point spread function (PSF). The new, iterative FFA we present here 1) measures a microscope's PSF and uses it as a metric for identifying fibers against the background; 2) traces each fiber within a cone angle; and 3) blots out the identified trace before identifying another fiber. Blotting out the identified traces in each iteration allows the FFA to detect and return traces of single fibers accurately and efficiently-even within fiber bundles. We used the FFA to trace unlabeled collagen type I fibers-a biopolymer used to mimic the extracellular matrix in in vitro cancer assays-imaged by confocal reflectance microscopy in three dimensions, enabling quantification of fiber contour length, persistence length, and three-dimensional (3D) mesh size. Based on 3D confocal reflectance microscopy images and the PSF, we traced and measured the fibers to confirm that colder gelation temperatures increased fiber contour length, persistence length, and 3D mesh size-thereby demonstrating the FFA's use in quantifying biopolymers' structural and physical cues from noisy microscope images.
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Affiliation(s)
- Ninna Struck Rossen
- Biotech Research & Innovation Center, University of Copenhagen (UCPH), Copenhagen, Denmark; Department of Radiation Oncology, Stanford University, Palo Alto, California; Niels Bohr Institute, University of Copenhagen (UCPH), Copenhagen, Denmark.
| | - Anders Kyrsting
- Niels Bohr Institute, University of Copenhagen (UCPH), Copenhagen, Denmark
| | - Amato J Giaccia
- Department of Radiation Oncology, Stanford University, Palo Alto, California
| | - Janine Terra Erler
- Biotech Research & Innovation Center, University of Copenhagen (UCPH), Copenhagen, Denmark
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Masumoto S, Ono A, Ito A, Kawabe Y, Kamihira M. Hypoxia-responsive expression of vascular endothelial growth factor for induction of angiogenesis in artificial three-dimensional tissues. J Biosci Bioeng 2021; 132:399-407. [PMID: 34364783 DOI: 10.1016/j.jbiosc.2021.06.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 06/27/2021] [Accepted: 06/28/2021] [Indexed: 12/12/2022]
Abstract
Constructing three-dimensional (3D) tissues is an important process to improve cellular functions in tissue engineering. When transplanting artificially constructed tissues, a poor vascular network restricts oxygen and nutrient supplies to the tissue cells, which leads to cell death and reduced rates of tissue engraftment. Therefore, it is necessary to develop a system that builds a vascular network within 3D tissues. Here, we developed a hypoxia-responsive gene expression system for production of an angiogenic factor, vascular endothelial growth factor (VEGF), to improve hypoxia and nutrition deficiencies inside artificial 3D tissues. We demonstrated that cells into which the hypoxia-responsive VEGF gene expression system had been introduced autonomously controlled VEGF expression in a hypoxic stress-dependent manner. Next, we confirmed that VEGF expression within a 3D cell sheet was induced in response to a hypoxic environment in vitro. The genetically modified cell sheet was subcutaneously transplanted into mice to evaluate the feasibility of the hypoxia-responsive VEGF gene expression system in vivo. The results suggest that the hypoxia-responsive VEGF gene expression system is promising to prepare artificial 3D tissues in regenerative medicine.
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Affiliation(s)
- Shinya Masumoto
- Department of Chemical Engineering, Faculty of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Akihiko Ono
- Graduate School of Systems Life Sciences, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Akira Ito
- Department of Chemical Engineering, Faculty of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Yoshinori Kawabe
- Department of Chemical Engineering, Faculty of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Masamichi Kamihira
- Department of Chemical Engineering, Faculty of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan; Graduate School of Systems Life Sciences, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
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20
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Abstract
The physical microenvironment of cells plays a fundamental role in regulating cellular behavior and cell fate, especially in the context of cancer metastasis. For example, capillary deformation can destroy arrested circulating tumor cells while the dense extracellular matrix can form a physical barrier for invading cancer cells. Understanding how metastatic cancer cells overcome the challenges brought forth by physical confinement can help in developing better therapeutics that can put a stop to this migratory stage of the metastatic cascade. Numerous in vivo and in vitro assays have been developed to recapitulate the metastatic processes and study cancer cell migration in a confining microenvironment. In this review, we summarize some of the representative techniques and the exciting new findings. We critically review the advantages, as well as challenges associated with these tools and methodologies, and provide a guide on the applications that they are most suited for. We hope future efforts that push forward our current understanding on metastasis under confinement can lead to novel and more effective diagnostic and therapeutic strategies against this dreaded disease.
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Affiliation(s)
- Kuan Jiang
- Mechanobiology Institute, National University of Singapore, Singapore
| | - Lanfeng Liang
- Mechanobiology Institute, National University of Singapore, Singapore
| | - Chwee Teck Lim
- Mechanobiology Institute, National University of Singapore, Singapore
- Department of Biomedical Engineering, National University of Singapore, Singapore
- Institute for Health Innovation and Technology (iHealthtech), National University of Singapore, Singapore
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21
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Aprile P, Kelly DJ. Hydrostatic Pressure Regulates the Volume, Aggregation and Chondrogenic Differentiation of Bone Marrow Derived Stromal Cells. Front Bioeng Biotechnol 2021; 8:619914. [PMID: 33520969 PMCID: PMC7844310 DOI: 10.3389/fbioe.2020.619914] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Accepted: 12/15/2020] [Indexed: 01/17/2023] Open
Abstract
The limited ability of articular cartilage to self-repair has motivated the development of tissue engineering strategies that aim to harness the regenerative potential of mesenchymal stem/marrow stromal cells (MSCs). Understanding how environmental factors regulate the phenotype of MSCs will be central to unlocking their regenerative potential. The biophysical environment is known to regulate the phenotype of stem cells, with factors such as substrate stiffness and externally applied mechanical loads known to regulate chondrogenesis of MSCs. In particular, hydrostatic pressure (HP) has been shown to play a key role in the development and maintenance of articular cartilage. Using a collagen-alginate interpenetrating network (IPN) hydrogel as a model system to tune matrix stiffness, this study sought to investigate how HP and substrate stiffness interact to regulate chondrogenesis of MSCs. If applied during early chondrogenesis in soft IPN hydrogels, HP was found to downregulate the expression of ACAN, COL2, CDH2 and COLX, but to increase the expression of the osteogenic factors RUNX2 and COL1. This correlated with a reduction in SMAD 2/3, HDAC4 nuclear localization and the expression of NCAD. It was also associated with a reduction in cell volume, an increase in the average distance between MSCs in the hydrogels and a decrease in their tendency to form aggregates. In contrast, the delayed application of HP to MSCs grown in soft hydrogels was associated with increased cellular volume and aggregation and the maintenance of a chondrogenic phenotype. Together these findings demonstrate how tailoring the stiffness and the timing of HP exposure can be leveraged to regulate chondrogenesis of MSCs and opens alternative avenues for developmentally inspired strategies for cartilage tissue regeneration.
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Affiliation(s)
- Paola Aprile
- Trinity Centre for Biomedical Engineering, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland.,Department of Mechanical, Manufacturing and Biomedical Engineering, Trinity College Dublin, Dublin, Ireland
| | - Daniel J Kelly
- Trinity Centre for Biomedical Engineering, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland.,Department of Mechanical, Manufacturing and Biomedical Engineering, Trinity College Dublin, Dublin, Ireland.,Advanced Materials and Bioengineering Research Centre, Royal College of Surgeons in Ireland and Trinity College Dublin, Dublin, Ireland
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22
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Pei Y, Jordan KE, Xiang N, Parker RN, Mu X, Zhang L, Feng Z, Chen Y, Li C, Guo C, Tang K, Kaplan DL. Liquid-Exfoliated Mesostructured Collagen from the Bovine Achilles Tendon as Building Blocks of Collagen Membranes. ACS APPLIED MATERIALS & INTERFACES 2021; 13:3186-3198. [PMID: 33398989 DOI: 10.1021/acsami.0c20330] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Mesoscaled assemblies are organized in native collagen tissues to achieve remarkable and diverse performance and functions. In this work, a facile, low-cost, and controllable liquid exfoliation method was applied to directly extract these collagen mesostructures from bovine Achilles tendons using a sodium hydroxide (NaOH)/urea aqueous system with freeze-thaw cycles and sonication. A series of collagen fibrils with diameters of 26-230 nm were harvested using this process, and in situ observations under polarizing microscopy (POM) and using molecular dynamics simulations revealed the influence of the NaOH/urea system on the tendon collagen. FTIR and XRD results confirmed that these collagen fibrils preserved typical structural characteristics of type I collagen. These isolated collagen fibrils were then utilized as building blocks to fabricate free-standing collagen membranes, which exhibited good stability in solvents and outstanding mechanical properties and transparency, with potential for utility in optical and electronic sensors. Moreover, in vitro and vivo evaluations demonstrated that these new resulting collagen membranes had good cytocompatibility, biocompatibility, and degradability for potential applications in biomedicine. This work provides a new approach for collagen processing by liquid exfoliation with utility for the formation of robust collagen materials that consist of native collagen mesostructures as building blocks.
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Affiliation(s)
- Ying Pei
- College of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Kathryn E Jordan
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, United States
| | - Ning Xiang
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, United States
| | - Rachael N Parker
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, United States
| | - Xuan Mu
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, United States
| | - Luan Zhang
- College of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Zhibin Feng
- College of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Ying Chen
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, United States
| | - Chunmei Li
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, United States
| | - Chengchen Guo
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, United States
- School of Engineering, Westlake University, Hangzhou, Zhejiang 310012, China
| | - Keyong Tang
- College of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - David L Kaplan
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, United States
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23
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Liu J, Zheng H, Dai X, Poh PSP, Machens HG, Schilling AF. Transparent PDMS Bioreactors for the Fabrication and Analysis of Multi-Layer Pre-vascularized Hydrogels Under Continuous Perfusion. Front Bioeng Biotechnol 2020; 8:568934. [PMID: 33425863 PMCID: PMC7785876 DOI: 10.3389/fbioe.2020.568934] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Accepted: 11/17/2020] [Indexed: 12/17/2022] Open
Abstract
Tissue engineering in combination with stem cell technology has the potential to revolutionize human healthcare. It aims at the generation of artificial tissues that can mimic the original with complex functions for medical applications. However, even the best current designs are limited in size, if the transport of nutrients and oxygen to the cells and the removal of cellular metabolites waste is mainly dependent on passive diffusion. Incorporation of functional biomimetic vasculature within tissue engineered constructs can overcome this shortcoming. Here, we developed a novel strategy using 3D printing and injection molding technology to customize multilayer hydrogel constructs with pre-vascularized structures in transparent Polydimethysiloxane (PDMS) bioreactors. These bioreactors can be directly connected to continuous perfusion systems without complicated construct assembling. Mimicking natural layer-structures of vascular walls, multilayer vessel constructs were fabricated with cell-laden fibrin and collagen gels, respectively. The multilayer design allows functional organization of multiple cell types, i.e., mesenchymal stem cells (MSCs) in outer layer, human umbilical vein endothelial cells (HUVECs) the inner layer and smooth muscle cells in between MSCs and HUVECs layers. Multiplex layers with different cell types showed clear boundaries and growth along the hydrogel layers. This work demonstrates a rapid, cost-effective, and practical method to fabricate customized 3D-multilayer vascular models. It allows precise design of parameters like length, thickness, diameter of lumens and the whole vessel constructs resembling the natural tissue in detail without the need of sophisticated skills or equipment. The ready-to-use bioreactor with hydrogel constructs could be used for biomedical applications including pre-vascularization for transplantable engineered tissue or studies of vascular biology.
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Affiliation(s)
- Juan Liu
- Department of Plastic Surgery, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Clinic for Trauma Surgery, Orthopedics and Plastic Surgery, University Medical Center Göttingen, Göttingen, Germany
| | - Huaiyuan Zheng
- Department of Hand Surgery, Wuhan Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xinyi Dai
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People's Hospital, Shanghai, China
| | - Patrina S P Poh
- Julius Wolff Institut, Charité - Universitätsmedizin, Berlin, Germany
| | - Hans-Günther Machens
- Department of Hand Surgery and Plastic Surgery, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Arndt F Schilling
- Clinic for Trauma Surgery, Orthopedics and Plastic Surgery, University Medical Center Göttingen, Göttingen, Germany
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24
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Ort C, Lee W, Kalashnikov N, Moraes C. Disentangling the fibrous microenvironment: designer culture models for improved drug discovery. Expert Opin Drug Discov 2020; 16:159-171. [PMID: 32988224 DOI: 10.1080/17460441.2020.1822815] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
INTRODUCTION Standard high-throughput screening (HTS) assays rarely identify clinically viable 'hits', likely because cells do not experience physiologically realistic culture conditions. The biophysical nature of the extracellular matrix has emerged as a critical driver of cell function and response and recreating these factors could be critically important in streamlining the drug discovery pipeline. AREAS COVERED The authors review recent design strategies to understand and manipulate biophysical features of three-dimensional fibrous tissues. The effects of architectural parameters of the extracellular matrix and their resulting mechanical behaviors are deconstructed; and their individual and combined impact on cell behavior is examined. The authors then illustrate the potential impact of these physical features on designing next-generation platforms to identify drugs effective against breast cancer. EXPERT OPINION Progression toward increased culture complexity must be balanced against the demanding technical requirements for high-throughput screening; and strategies to identify the minimal set of microenvironmental parameters needed to recreate disease-relevant responses must be specifically tailored to the disease stage and organ system being studied. Although challenging, this can be achieved through integrative and multidisciplinary technologies that span microfabrication, cell biology, and tissue engineering.
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Affiliation(s)
- Carley Ort
- Department of Chemical Engineering, McGill University , Montreal, Canada
| | - Wontae Lee
- Department of Chemical Engineering, McGill University , Montreal, Canada
| | - Nikita Kalashnikov
- Department of Chemical Engineering, McGill University , Montreal, Canada
| | - Christopher Moraes
- Department of Chemical Engineering, McGill University , Montreal, Canada.,Department of Biomedical Engineering, McGill University , Montreal, Canada.,Rosalind & Morris Goodman Cancer Research Center, McGill University , Montreal, Canada
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25
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Xu Y, Jacquat RPB, Shen Y, Vigolo D, Morse D, Zhang S, Knowles TPJ. Microfluidic Templating of Spatially Inhomogeneous Protein Microgels. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2000432. [PMID: 32529798 DOI: 10.1002/smll.202000432] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 04/20/2020] [Accepted: 05/18/2020] [Indexed: 05/20/2023]
Abstract
3D scaffolds in the form of hydrogels and microgels have allowed for more native cell-culture systems to be developed relative to flat substrates. Native biological tissues are, however, usually spatially inhomogeneous and anisotropic, but regulating the spatial density of hydrogels at the microscale to mimic this inhomogeneity has been challenging to achieve. Moreover, the development of biocompatible synthesis approaches for protein-based microgels remains challenging, and typical gelation conditions include UV light, extreme pH, extreme temperature, or organic solvents, factors which can compromise the viability of cells. This study addresses these challenges by demonstrating an approach to fabricate protein microgels with controllable radial density through microfluidic mixing and physical and enzymatic crosslinking of gelatin precursor molecules. Microgels with a higher density in their cores and microgels with a higher density in their shells are demonstrated. The microgels have robust stability at 37 °C and different dissolution rates through enzymolysis, which can be further used for gradient scaffolds for 3D cell culture, enabling controlled degradability, and the release of biomolecules. The design principles of the microgels could also be exploited to generate other soft materials for applications ranging from novel protein-only micro reactors to soft robots.
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Affiliation(s)
- Yufan Xu
- Centre for Misfolding Diseases, Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK
| | - Raphaël P B Jacquat
- Centre for Misfolding Diseases, Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK
- Cavendish Laboratory, University of Cambridge, Cambridge, CB3 0HE, UK
| | - Yi Shen
- Centre for Misfolding Diseases, Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK
| | - Daniele Vigolo
- School of Chemical Engineering, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - David Morse
- Centre for Misfolding Diseases, Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK
- Cavendish Laboratory, University of Cambridge, Cambridge, CB3 0HE, UK
- Division of Preclinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Shuyuan Zhang
- Centre for Misfolding Diseases, Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK
| | - Tuomas P J Knowles
- Centre for Misfolding Diseases, Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK
- Cavendish Laboratory, University of Cambridge, Cambridge, CB3 0HE, UK
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26
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Yang Y, Wang M, Yang S, Lin Y, Zhou Q, Li H, Tang T. Bioprinting of an osteocyte network for biomimetic mineralization. Biofabrication 2020; 12:045013. [DOI: 10.1088/1758-5090/aba1d0] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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27
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Dhamecha D, Le D, Movsas R, Gonsalves A, Menon JU. Porous Polymeric Microspheres With Controllable Pore Diameters for Tissue Engineered Lung Tumor Model Development. Front Bioeng Biotechnol 2020; 8:799. [PMID: 32754585 PMCID: PMC7365955 DOI: 10.3389/fbioe.2020.00799] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Accepted: 06/22/2020] [Indexed: 12/15/2022] Open
Abstract
Complex cell cultures are more representative of in vivo conditions than conventionally used monolayer cultures, and are hence being investigated for predictive screening of therapeutic agents. Poly lactide co-glycolide (PLGA) polymer is frequently used in the development of porous substrates for complex cell culture. Substrates or scaffolds with highly interconnected, micrometric pores have been shown to positively impact tissue model formation by enhancing cell attachment and infiltration. We report a novel alginate microsphere (AMS)-based controlled pore formation method for the development of porous, biodegradable PLGA microspheres (PPMS), for tissue engineered lung tumor model development. The AMS porogen, non-porous PLGA microspheres (PLGAMS) and PPMS had spherical morphology (mean diameters: 10.3 ± 4, 79 ± 21.8, and 103 ± 30 μm, respectively). The PPMS had relatively uniform pores and a porosity of 45.5%. Degradation studies show that PPMS effectively maintained their structural integrity with time whereas PLGAMS showed shrunken morphology. The optimized cell seeding density on PPMS was 25 × 103 cells/mg of particles/well. Collagen coating on PPMS significantly enhanced the attachment and proliferation of co-cultures of A549 lung adenocarcinoma and MRC-5 lung fibroblast cells. Preliminary proof-of-concept drug screening studies using mono- and combination anti-cancer therapies demonstrated that the tissue-engineered lung tumor model had a significantly higher resistance to the tested drugs than the monolayer co-cultures. These studies indicate that the PPMS with controllable pore diameters may be a suitable platform for the development of complex tumor cultures for early in vitro drug screening applications.
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Affiliation(s)
| | | | | | | | - Jyothi U. Menon
- Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, RI, United States
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28
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Rial R, Liu Z, Ruso JM. Soft Actuated Hybrid Hydrogel with Bioinspired Complexity to Control Mechanical Flexure Behavior for Tissue Engineering. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E1302. [PMID: 32635193 PMCID: PMC7407768 DOI: 10.3390/nano10071302] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 06/28/2020] [Accepted: 06/30/2020] [Indexed: 01/16/2023]
Abstract
Hydrogels exhibit excellent properties that enable them as nanostructured scaffolds for soft tissue engineering. However, single-component hydrogels have significant limitations due to the low versatility of the single component. To achieve this goal, we have designed and characterized different multi-component hydrogels composed of gelatin, alginate, hydroxyapatite, and a protein (BSA and fibrinogen). First, we describe the surface morphology of the samples and the main characteristics of the physiological interplay by using fourier transform infrared (FT-IR), and confocal Raman microscopy. Then, their degradation and swelling were studied and mechanical properties were determined by rheology measurements. Experimental data were carefully collected and quantitatively analyzed by developing specific approaches and different theoretical models to determining the most important parameters. Finally, we determine how the nanoscale of the system influences its macroscopic properties and characterize the extent to which degree each component maintains its own functionality, demonstrating that with the optimal components, in the right proportion, multifunctional hydrogels can be developed.
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Affiliation(s)
- Ramón Rial
- Soft Matter and Molecular Biophysics Group, Department of Applied Physics, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain;
| | - Zhen Liu
- Department of Physics and Engineering, Frostburg State University, Frostburg, MD 21532, USA;
| | - Juan M. Ruso
- Soft Matter and Molecular Biophysics Group, Department of Applied Physics, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain;
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29
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Zhang Y, Cao Y, Zhao H, Zhang L, Ni T, Liu Y, An Z, Liu M, Pei R. An injectable BMSC-laden enzyme-catalyzed crosslinking collagen-hyaluronic acid hydrogel for cartilage repair and regeneration. J Mater Chem B 2020; 8:4237-4244. [PMID: 32270838 DOI: 10.1039/d0tb00291g] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Articular cartilage has limited self-healing ability due to its lack of abundant nutrients and progenitor cells. In this study, an injectable hydrogel system consisting of collagen type I-tyramine (Col-TA) and hyaluronic acid-tyramine (HA-TA) was fabricated as the bone marrow mesenchymal stem cell (BMSC)-laden hydrogel system for cartilage regeneration. Next, the physiochemical properties of this hydrogel system were well characterized and optimized, including gelation time, stiffness, water absorption and degradability. Further, the proliferation and differentiation of BMSCs within the Col-HA hydrogel were evaluated, and the ability of in vivo cartilage repair was also examined in the presence of the transforming growth factor-β1 (TGF-β1). These results illustrate that this hydrogel can offer a great microenvironment for BMSC growth and cartilage differentiation both in vitro and in vivo, and the Col-HA hydrogel can serve as an ideal hydrogel for cartilage tissue regeneration.
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Affiliation(s)
- Yajie Zhang
- School of Nano-Tech and Nano-Bionics, University of Science and Technology of China, Hefei, 230026, China.
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30
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Injectable Therapeutic Organoids Using Sacrificial Hydrogels. iScience 2020; 23:101052. [PMID: 32353766 PMCID: PMC7191221 DOI: 10.1016/j.isci.2020.101052] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2020] [Revised: 03/11/2020] [Accepted: 04/03/2020] [Indexed: 12/28/2022] Open
Abstract
Organoids are becoming widespread in drug-screening technologies but have been used sparingly for cell therapy as current approaches for producing self-organized cell clusters lack scalability or reproducibility in size and cellular organization. We introduce a method of using hydrogels as sacrificial scaffolds, which allow cells to form self-organized clusters followed by gentle release, resulting in highly reproducible multicellular structures on a large scale. We demonstrated this strategy for endothelial cells and mesenchymal stem cells to self-organize into blood-vessel units, which were injected into mice, and rapidly formed perfusing vasculature. Moreover, in a mouse model of peripheral artery disease, intramuscular injections of blood-vessel units resulted in rapid restoration of vascular perfusion within seven days. As cell therapy transforms into a new class of therapeutic modality, this simple method—by making use of the dynamic nature of hydrogels—could offer high yields of self-organized multicellular aggregates with reproducible sizes and cellular architectures. Therapeutic, prevascularized organoids were formed in a sacrificial scaffold The organoids are highly reproducible and grown in a high-throughput manner The organoids rapidly formed perfusing vasculature in healthy mice Therapeutic potential was assessed in a mouse model of peripheral artery disease
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31
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Liu X, Zheng M, Wang X, Luo X, Hou M, Yue O. Biofabrication and Characterization of Collagens with Different Hierarchical Architectures. ACS Biomater Sci Eng 2019; 6:739-748. [DOI: 10.1021/acsbiomaterials.9b01252] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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32
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Lee H, Kim W, Lee J, Yoo JJ, Kim GH, Lee SJ. Effect of Hierarchical Scaffold Consisting of Aligned dECM Nanofibers and Poly(lactide- co-glycolide) Struts on the Orientation and Maturation of Human Muscle Progenitor Cells. ACS APPLIED MATERIALS & INTERFACES 2019; 11:39449-39458. [PMID: 31584255 DOI: 10.1021/acsami.9b12639] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Extracellular matrices (ECMs) derived from tissues and decellularized are widely used as biomaterials in tissue engineering applications because they encompass tissue-specific biological and physical cues. In this study, we utilized a solubilized decellularized tissue (dECM) obtained from skeletal muscle to fabricate a nanofibrous structure using the electrospinning technique. The dECM was chemically modified by methacrylate reaction (dECM-MA) to improve the structural stability before electrospinning. The electrospun dECM-MA nanofibers were combined with microscale fibrillated poly(lactide-co-glycolide) (PLGA) constructs fabricated by three-dimensional printing and fibrillation/leaching of poly(vinyl alcohol) to promote skeletal muscle cell orientation and maturation. Using the electrostatic force-assisted fiber-alignment method, a multiscale composite scaffold consisting of fibrillated PLGA and aligned dECM-MA nanofibers was fabricated. The multiscale dECM-MA/PLGA composite scaffold significantly promoted the cellular orientation and myotube formation of human muscle progenitor cells compared to control scaffolds. The results suggested the potential use of the multiscale dECM-MA/PLGA composite scaffold, which contains the biochemical and topographical cues, for bioengineering a skeletal muscle tissue construct.
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Affiliation(s)
- Hyeongjin Lee
- Wake Forest Institute for Regenerative Medicine , Wake Forest School of Medicine , Medical Center Boulevard , Winston-Salem , North Carolina 27157 , United States
| | - WonJin Kim
- Wake Forest Institute for Regenerative Medicine , Wake Forest School of Medicine , Medical Center Boulevard , Winston-Salem , North Carolina 27157 , United States
- Department of Biomechatronic Engineering, College of Biotechnology and Bioengineering , Sungkyunkwan University (SKKU) , Suwon 16419 , Republic of Korea
| | - JiUn Lee
- Wake Forest Institute for Regenerative Medicine , Wake Forest School of Medicine , Medical Center Boulevard , Winston-Salem , North Carolina 27157 , United States
- Department of Biomechatronic Engineering, College of Biotechnology and Bioengineering , Sungkyunkwan University (SKKU) , Suwon 16419 , Republic of Korea
| | - James J Yoo
- Wake Forest Institute for Regenerative Medicine , Wake Forest School of Medicine , Medical Center Boulevard , Winston-Salem , North Carolina 27157 , United States
| | - Geun Hyung Kim
- Wake Forest Institute for Regenerative Medicine , Wake Forest School of Medicine , Medical Center Boulevard , Winston-Salem , North Carolina 27157 , United States
- Department of Biomechatronic Engineering, College of Biotechnology and Bioengineering , Sungkyunkwan University (SKKU) , Suwon 16419 , Republic of Korea
| | - Sang Jin Lee
- Wake Forest Institute for Regenerative Medicine , Wake Forest School of Medicine , Medical Center Boulevard , Winston-Salem , North Carolina 27157 , United States
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33
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Yu M, Liu Y, Yu X, Li J, Zhao W, Hu J, Cheng K, Weng W, Zhang B, Wang H, Dong L. Enhanced osteogenesis of quasi-three-dimensional hierarchical topography. J Nanobiotechnology 2019; 17:102. [PMID: 31581945 PMCID: PMC6777029 DOI: 10.1186/s12951-019-0536-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2019] [Accepted: 09/24/2019] [Indexed: 12/11/2022] Open
Abstract
Natural extracellular matrices (ECMs) are three-dimensional (3D) and multi-scale hierarchical structure. However, coatings used as ECM-mimicking structures for osteogenesis are typically two-dimensional or single-scaled. Here, we design a distinct quasi-three-dimensional hierarchical topography integrated of density-controlled titania nanodots and nanorods. We find cellular pseudopods preferred to anchor deeply across the distinct 3D topography, dependently of the relative density of nanorods, which promote the osteogenic differentiation of osteoblast but not the viability of fibroblast. The in vivo experimental results further indicate that the new bone formation, the relative bone-implant contact as well as the push-put strength, are significantly enhanced on the 3D hierarchical topography. We also show that the exposures of HFN7.1 and mAb1937 critical functional motifs of fibronectin for cellular anchorage are up-regulated on the 3D hierarchical topography, which might synergistically promote the osteogenesis. Our findings suggest the multi-dimensions and multi-scales as vital characteristic of cell-ECM interactions and as an important design parameter for bone implant coatings.
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Affiliation(s)
- Mengfei Yu
- The Affiliated Stomatologic Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
- The State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou, 310027, China
- School of Materials Science and Engineering, State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou, 310027, China
| | - Yu Liu
- The Affiliated Stomatologic Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Xiaowen Yu
- The Affiliated Stomatologic Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Jianhua Li
- Hangzhou Dental Hospital, Hangzhou, 310006, China
| | - Wenquan Zhao
- The Affiliated Stomatologic Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Ji'an Hu
- 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
| | - Bin Zhang
- The State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou, 310027, China.
| | - Huiming Wang
- The Affiliated Stomatologic Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China.
| | - Lingqing Dong
- The Affiliated Stomatologic Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China.
- School of Materials Science and Engineering, State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou, 310027, China.
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Zuela-Sopilniak N, Lammerding J. Engineering approaches to studying cancer cell migration in three-dimensional environments. Philos Trans R Soc Lond B Biol Sci 2019; 374:20180219. [PMID: 31431175 PMCID: PMC6627017 DOI: 10.1098/rstb.2018.0219] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/15/2019] [Indexed: 12/24/2022] Open
Abstract
Cancer is one of the most devastating diseases of our time, with 17 million new cancer cases and 9.5 million cancer deaths in 2018 worldwide. The mortality associated with cancer results primarily from metastasis, i.e. the spreading of cancer cells from the primary tumour to other organs. The invasion and migration of cells through basement membranes, tight interstitial spaces and endothelial cell layers are key steps in the metastatic cascade. Recent studies demonstrated that cell migration through three-dimensional environments that mimic the in vivo conditions significantly differs from their migration on two-dimensional surfaces. Here, we review recent technological advances made in the field of cancer research that provide more 'true to the source' experimental platforms and measurements for the study of cancer cell invasion and migration in three-dimensional environments. These include microfabrication, three-dimensional bioprinting and intravital imaging tools, along with force and stiffness measurements of cells and their environments. These techniques will enable new studies that better reflect the physiological environment found in vivo, thereby producing more robust results. The knowledge achieved through these studies will aid in the development of new treatment options with the potential to ultimately lighten the devastating cost cancer inflicts on patients and their families. This article is part of a discussion meeting issue 'Forces in cancer: interdisciplinary approaches in tumour mechanobiology'.
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Affiliation(s)
| | - Jan Lammerding
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Weill Institute for Cell and Molecular Biology, Cornell University, Ithaca, NY, USA
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Moxon SR, Corbett NJ, Fisher K, Potjewyd G, Domingos M, Hooper NM. Blended alginate/collagen hydrogels promote neurogenesis and neuronal maturation. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 104:109904. [PMID: 31499954 PMCID: PMC6873778 DOI: 10.1016/j.msec.2019.109904] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 05/23/2019] [Accepted: 06/17/2019] [Indexed: 12/30/2022]
Abstract
Brain extracellular matrix (ECM) is complex, heterogeneous and often poorly replicated in traditional 2D cell culture systems. The development of more physiologically relevant 3D cell models capable of emulating the native ECM is of paramount importance for the study of human induced pluripotent stem cell (iPSC)-derived neurons. Due to its structural similarity with hyaluronic acid, a primary component of brain ECM, alginate is a potential biomaterial for 3D cell culture systems. However, a lack of cell adhesion motifs within the chemical structure of alginate has limited its application in neural culture systems. This study presents a simple and accessible method of incorporating collagen fibrils into an alginate hydrogel by physical mixing and controlled gelation under physiological conditions and tests the hypothesis that such a substrate could influence the behaviour of human neurons in 3D culture. Regulation of the gelation process enabled the penetration of collagen fibrils throughout the hydrogel structure as demonstrated by transmission electron microscopy. Encapsulated human iPSC-derived neurons adhered to the blended hydrogel as evidenced by the increased expression of α1, α2 and β1 integrins. Furthermore, immunofluorescence microscopy revealed that encapsulated neurons formed complex neural networks and matured into branched neurons expressing synaptophysin, a key protein involved in neurotransmission, along the neurites. Mechanical tuning of the hydrogel stiffness by modulation of the alginate ionic crosslinker concentration also influenced neuron-specific gene expression. In conclusion, we have shown that by tuning the physicochemical properties of the alginate/collagen blend it is possible to create different ECM-like microenvironments where complex mechanisms underpinning the growth and development of human neurons can be simulated and systematically investigated. Alginate and collagen are blended to create a bespoke hydrogel that mimics aspects of brain ECM. Encapsulated human pluripotent stem cell derived neurons adhere to the hydrogel matrix and form 3D neural networks. Neuronal differentiation and maturation is promoted within the hydrogel matrix. Mechanical properties of the hydrogel can be easily tuned to optimise neurogenesis. The hydrogel presents a platform for studying neuronal function and dysfunction in health and disease.
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Affiliation(s)
- Samuel R Moxon
- Division of Neuroscience and Experimental Psychology, School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester Academic Health Science Centre, Manchester M13 9PL, UK
| | - Nicola J Corbett
- Division of Neuroscience and Experimental Psychology, School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester Academic Health Science Centre, Manchester M13 9PL, UK
| | - Kate Fisher
- Division of Neuroscience and Experimental Psychology, School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester Academic Health Science Centre, Manchester M13 9PL, UK
| | - Geoffrey Potjewyd
- Division of Neuroscience and Experimental Psychology, School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester Academic Health Science Centre, Manchester M13 9PL, UK; School of Mechanical, Aerospace and Civil Engineering, Faculty of Science and Engineering, The University of Manchester, Manchester M13 9PL, UK
| | - Marco Domingos
- School of Mechanical, Aerospace and Civil Engineering, Faculty of Science and Engineering, The University of Manchester, Manchester M13 9PL, UK
| | - Nigel M Hooper
- Division of Neuroscience and Experimental Psychology, School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester Academic Health Science Centre, Manchester M13 9PL, UK.
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Filardo G, Petretta M, Cavallo C, Roseti L, Durante S, Albisinni U, Grigolo B. Patient-specific meniscus prototype based on 3D bioprinting of human cell-laden scaffold. Bone Joint Res 2019; 8:101-106. [PMID: 30915216 PMCID: PMC6397325 DOI: 10.1302/2046-3758.82.bjr-2018-0134.r1] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Objectives Meniscal injuries are often associated with an active lifestyle. The damage of meniscal tissue puts young patients at higher risk of undergoing meniscal surgery and, therefore, at higher risk of osteoarthritis. In this study, we undertook proof-of-concept research to develop a cellularized human meniscus by using 3D bioprinting technology. Methods A 3D model of bioengineered medial meniscus tissue was created, based on MRI scans of a human volunteer. The Digital Imaging and Communications in Medicine (DICOM) data from these MRI scans were processed using dedicated software, in order to obtain an STL model of the structure. The chosen 3D Discovery printing tool was a microvalve-based inkjet printhead. Primary mesenchymal stem cells (MSCs) were isolated from bone marrow and embedded in a collagen-based bio-ink before printing. LIVE/DEAD assay was performed on realized cell-laden constructs carrying MSCs in order to evaluate cell distribution and viability. Results This study involved the realization of a human cell-laden collagen meniscus using 3D bioprinting. The meniscus prototype showed the biological potential of this technology to provide an anatomically shaped, patient-specific construct with viable cells on a biocompatible material. Conclusion This paper reports the preliminary findings of the production of a custom-made, cell-laden, collagen-based human meniscus. The prototype described could act as the starting point for future developments of this collagen-based, tissue-engineered structure, which could aid the optimization of implants designed to replace damaged menisci. Cite this article: G. Filardo, M. Petretta, C. Cavallo, L. Roseti, S. Durante, U. Albisinni, B. Grigolo. Patient-specific meniscus prototype based on 3D bioprinting of human cell-laden scaffold. Bone Joint Res 2019;8:101–106. DOI: 10.1302/2046-3758.82.BJR-2018-0134.R1.
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Affiliation(s)
- G Filardo
- Applied and Translational Research (ATR) Center, IRCCS - Istituto Ortopedico Rizzoli, Bologna, Italy
| | - M Petretta
- Laboratory RAMSES, Laboratorio RAMSES, Rizzoli Research, Innovation & Technology Department (RIT), IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy; RegenHu Ltd, Villaz-St-Pierre, Switzerland
| | - C Cavallo
- Laboratorio RAMSES, Rizzoli Research, Innovation & Technology Department (RIT), IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - L Roseti
- Laboratorio RAMSES, Rizzoli Research, Innovation & Technology Department (RIT), IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - S Durante
- Struttura Complessa Radiologia Diagnostica ed Interventistica, Dipartimento Patologie Ortopediche-Traumatologiche Complesse, IRCCS - Istituto Ortopedico Rizzoli, Bologna, Italy
| | - U Albisinni
- Struttura Complessa Radiologia Diagnostica ed Interventistica, Dipartimento Patologie Ortopediche-Traumatologiche Complesse, IRCCS - Istituto Ortopedico Rizzoli, Bologna, Italy
| | - B Grigolo
- Laboratorio RAMSES, Rizzoli Research, Innovation & Technology Department (RIT), IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
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Hu C, Chen Y, Tan MJA, Ren K, Wu H. Microfluidic technologies for vasculature biomimicry. Analyst 2019; 144:4461-4471. [DOI: 10.1039/c9an00421a] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
An overview of microfluidic technologies for vascular studies and fabrication of vascular structures.
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Affiliation(s)
- Chong Hu
- Department of Chemistry
- Hong Kong Baptist University
- Kowloon
- China
| | - Yangfan Chen
- Department of Chemistry
- The Hong Kong University of Science and Technology
- Kowloon
- China
| | - Ming Jun Andrew Tan
- Division of Biomedical Engineering
- The Hong Kong University of Science and Technology
- China
| | - Kangning Ren
- Department of Chemistry
- Hong Kong Baptist University
- Kowloon
- China
- HKBU Institute of Research and Continuing Education
| | - Hongkai Wu
- Department of Chemistry
- The Hong Kong University of Science and Technology
- Kowloon
- China
- Division of Biomedical Engineering
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38
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Wang ZZ, Sakiyama-Elbert SE. Matrices, scaffolds & carriers for cell delivery in nerve regeneration. Exp Neurol 2018; 319:112837. [PMID: 30291854 DOI: 10.1016/j.expneurol.2018.09.020] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 09/13/2018] [Accepted: 09/28/2018] [Indexed: 12/22/2022]
Abstract
Nerve injuries can be life-long debilitating traumas that severely impact patients' quality of life. While many acellular neural scaffolds have been developed to aid the process of nerve regeneration, complete functional recovery is still very difficult to achieve, especially for long-gap peripheral nerve injury and most cases of spinal cord injury. Cell-based therapies have shown many promising results for improving nerve regeneration. With recent advances in neural tissue engineering, the integration of biomaterial scaffolds and cell transplantation are emerging as a more promising approach to enhance nerve regeneration. This review provides an overview of important considerations for designing cell-carrier biomaterial scaffolds. It also discusses current biomaterials used for scaffolds that provide permissive and instructive microenvironments for improved cell transplantation.
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Affiliation(s)
- Ze Zhong Wang
- Department of Biomedical Engineering, Washington University in St. Louis, St. Louis, Missouri, USA; Department of Biomedical Engineering, University of Austin at Texas, Austin, TX, USA
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39
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Cera L, Schalley CA. Under Diffusion Control: from Structuring Matter to Directional Motion. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1707029. [PMID: 29931699 DOI: 10.1002/adma.201707029] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Revised: 03/09/2018] [Indexed: 06/08/2023]
Abstract
Self-organization in synthetic chemical systems is quickly developing into a powerful strategy for designing new functional materials. As self-organization requires the system to exist far from thermodynamic equilibrium, chemists have begun to go beyond the classical equilibrium self-assembly that is often applied in bottom-up supramolecular synthesis, and to learn about the surprising and unpredicted emergent properties of chemical systems that are characterized by a higher level of complexity and extended reactivity networks. The present review focuses on self-organization in reaction-diffusion systems. Selected examples show how the emergence of complex morphogenesis is feasible in synthetic systems leading to hierarchically and nanostructured matter. Starting from well-investigated oscillating reactions, recent developments extend diffusion-limited reactivity to supramolecular systems. The concept of dynamic instability is introduced and illustrated as an additional tool for the design of smart materials and actuators, with emphasis on the realization of motion even at the macroscopic scale. The formation of spatio-temporal patterns along diffusive chemical gradients is exploited as the main channel to realize symmetry breaking and therefore anisotropic and directional mechanical transformations. Finally, the interaction between external perturbations and chemical gradients is explored to give mechanistic insights in the design of materials responsive to external stimuli.
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Affiliation(s)
- Luca Cera
- Institut für Chemie und Biochemie der Freien Universität, Takustr. 3, 14195, Berlin, Germany
| | - Christoph A Schalley
- Institut für Chemie und Biochemie der Freien Universität, Takustr. 3, 14195, Berlin, Germany
- Sino-German Joint Research Lab for Space Biomaterials and Translational Technology, School of Life Sciences, Northwestern Polytechnical University, 127 Youyi Xilu, Xi'an, Shaanxi, 710072, P. R. China
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40
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Montalbano G, Toumpaniari S, Popov A, Duan P, Chen J, Dalgarno K, Scott WE, Ferreira AM. Synthesis of bioinspired collagen/alginate/fibrin based hydrogels for soft tissue engineering. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 91:236-246. [PMID: 30033251 DOI: 10.1016/j.msec.2018.04.101] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Revised: 03/13/2018] [Accepted: 04/28/2018] [Indexed: 12/22/2022]
Abstract
Hydrogels based on natural polymers offer a range of properties to mimic the native extracellular matrix, and provide microenvironments to preserve cellular function and encourage tissue formation. A tri-component hydrogel using collagen, alginate and fibrin (CAF) was developed and investigated at three collagen concentrations for application as a functional extracellular matrix analogue. Physical-chemical characterization of CAF hydrogels demonstrated a thermo-responsive crosslinking capacity at physiological conditions with stiffness similar to native soft tissues. CAF hydrogels were also assessed for cytocompatibility using L929 murine fibroblasts, pancreatic MIN6 β-cells and human mesenchymal stem cells (hMSCs); and demonstrated good cell viability, proliferation and metabolic activity after 7 days of in vitro culture. CAF hydrogels, especially with 2.5% w/v collagen, increased alkaline phosphatase production in hMSCs indicating potential for the promotion of osteogenic activity. Moreover, CAF hydrogels also increased metabolic activity of MIN6 β-cells and promoted the reconstitution of spherical pseudoislets with sizes ranging between 50 and 150 μm at day 7, demonstrating potential in diabetic therapeutic applications.
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Affiliation(s)
- G Montalbano
- School of Engineering, Newcastle University, Newcastle Upon Tyne NE1 7RU, UK; Department of Applied Science and Technology, Politecnico di Torino, Turin 10129, Italy
| | - S Toumpaniari
- School of Engineering, Newcastle University, Newcastle Upon Tyne NE1 7RU, UK; Cambridge Centre for Medical Materials, University of Cambridge, Cambridge CB3 0FS, UK
| | - A Popov
- School of Engineering, Newcastle University, Newcastle Upon Tyne NE1 7RU, UK; UCL Cancer Institute, University College London, London WC1E 6BT, UK
| | - P Duan
- School of Engineering, Newcastle University, Newcastle Upon Tyne NE1 7RU, UK
| | - J Chen
- School of Engineering, Newcastle University, Newcastle Upon Tyne NE1 7RU, UK
| | - K Dalgarno
- School of Engineering, Newcastle University, Newcastle Upon Tyne NE1 7RU, UK
| | - W E Scott
- Institute of Cellular Medicine, Newcastle University, Newcastle Upon Tyne NE1 7RU, UK
| | - A M Ferreira
- School of Engineering, Newcastle University, Newcastle Upon Tyne NE1 7RU, UK.
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Cooke ME, Jones SW, Ter Horst B, Moiemen N, Snow M, Chouhan G, Hill LJ, Esmaeli M, Moakes RJA, Holton J, Nandra R, Williams RL, Smith AM, Grover LM. Structuring of Hydrogels across Multiple Length Scales for Biomedical Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1705013. [PMID: 29430770 DOI: 10.1002/adma.201705013] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2017] [Revised: 10/20/2017] [Indexed: 06/08/2023]
Abstract
The development of new materials for clinical use is limited by an onerous regulatory framework, which means that taking a completely new material into the clinic can make translation economically unfeasible. One way to get around this issue is to structure materials that are already approved by the regulator, such that they exhibit very distinct physical properties and can be used in a broader range of clinical applications. Here, the focus is on the structuring of soft materials at multiple length scales by modifying processing conditions. By applying shear to newly forming materials, it is possible to trigger molecular reorganization of polymer chains, such that they aggregate to form particles and ribbon-like structures. These structures then weakly interact at zero shear forming a solid-like material. The resulting self-healing network is of particular use for a range of different biomedical applications. How these materials are used to allow the delivery of therapeutic entities (cells and proteins) and as a support for additive layer manufacturing of larger-scale tissue constructs is discussed. This technology enables the development of a range of novel materials and structures for tissue augmentation and regeneration.
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Affiliation(s)
- Megan E Cooke
- School of Chemical Engineering, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
- Institute of Inflammation and Ageing, MRC Musculoskeletal Ageing Centre, QE Hospital, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Simon W Jones
- Institute of Inflammation and Ageing, MRC Musculoskeletal Ageing Centre, QE Hospital, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Britt Ter Horst
- School of Chemical Engineering, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
- Scar Free Foundation Centre for Burns Research, QE Hospital, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Naiem Moiemen
- Scar Free Foundation Centre for Burns Research, QE Hospital, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Martyn Snow
- School of Chemical Engineering, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Gurpreet Chouhan
- School of Chemical Engineering, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Lisa J Hill
- Institute of Inflammation and Ageing, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Maryam Esmaeli
- Institute of Inflammation and Ageing, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Richard J A Moakes
- School of Chemical Engineering, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - James Holton
- School of Chemical Engineering, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Rajpal Nandra
- School of Chemical Engineering, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Richard L Williams
- School of Chemical Engineering, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Alan M Smith
- Department of Pharmacy, University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, UK
| | - Liam M Grover
- School of Chemical Engineering, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
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Song K, Wang Z, Liu R, Chen G, Liu L. Microfabrication-Based Three-Dimensional (3-D) Extracellular Matrix Microenvironments for Cancer and Other Diseases. Int J Mol Sci 2018; 19:E935. [PMID: 29561794 PMCID: PMC5979294 DOI: 10.3390/ijms19040935] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2017] [Revised: 01/18/2018] [Accepted: 01/19/2018] [Indexed: 12/17/2022] Open
Abstract
Exploring the complicated development of tumors and metastases needs a deep understanding of the physical and biological interactions between cancer cells and their surrounding microenvironments. One of the major challenges is the ability to mimic the complex 3-D tissue microenvironment that particularly influences cell proliferation, migration, invasion, and apoptosis in relation to the extracellular matrix (ECM). Traditional cell culture is unable to create 3-D cell scaffolds resembling tissue complexity and functions, and, in the past, many efforts were made to realize the goal of obtaining cell clusters in hydrogels. However, the available methods still lack a precise control of cell external microenvironments. Recently, the rapid development of microfabrication techniques, such as 3-D printing, microfluidics, and photochemistry, has offered great advantages in reconstructing 3-D controllable cancer cell microenvironments in vitro. Consequently, various biofunctionalized hydrogels have become the ideal candidates to help the researchers acquire some new insights into various diseases. Our review will discuss some important studies and the latest progress regarding the above approaches for the production of 3-D ECM structures for cancer and other diseases. Especially, we will focus on new discoveries regarding the impact of the ECM on different aspects of cancer metastasis, e.g., collective invasion, enhanced intravasation by stress and aligned collagen fibers, angiogenesis regulation, as well as on drug screening.
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Affiliation(s)
- Kena Song
- College of Physics, Chongqing University, Chongqing 401331, China.
| | - Zirui Wang
- College of Physics, Chongqing University, Chongqing 401331, China.
| | - Ruchuan Liu
- College of Physics, Chongqing University, Chongqing 401331, China.
| | - Guo Chen
- College of Physics, Chongqing University, Chongqing 401331, China.
| | - Liyu Liu
- College of Physics, Chongqing University, Chongqing 401331, China.
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43
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De Mori A, Peña Fernández M, Blunn G, Tozzi G, Roldo M. 3D Printing and Electrospinning of Composite Hydrogels for Cartilage and Bone Tissue Engineering. Polymers (Basel) 2018; 10:E285. [PMID: 30966320 PMCID: PMC6414880 DOI: 10.3390/polym10030285] [Citation(s) in RCA: 93] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 03/02/2018] [Accepted: 03/07/2018] [Indexed: 12/19/2022] Open
Abstract
Injuries of bone and cartilage constitute important health issues costing the National Health Service billions of pounds annually, in the UK only. Moreover, these damages can become cause of disability and loss of function for the patients with associated social costs and diminished quality of life. The biomechanical properties of these two tissues are massively different from each other and they are not uniform within the same tissue due to the specific anatomic location and function. In this perspective, tissue engineering (TE) has emerged as a promising approach to address the complexities associated with bone and cartilage regeneration. Tissue engineering aims at developing temporary three-dimensional multicomponent constructs to promote the natural healing process. Biomaterials, such as hydrogels, are currently extensively studied for their ability to reproduce both the ideal 3D extracellular environment for tissue growth and to have adequate mechanical properties for load bearing. This review will focus on the use of two manufacturing techniques, namely electrospinning and 3D printing, that present promise in the fabrication of complex composite gels for cartilage and bone tissue engineering applications.
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Affiliation(s)
- Arianna De Mori
- School of Pharmacy and Biomedical Sciences, University of Portsmouth, Portsmouth PO1 2DT, UK.
| | - Marta Peña Fernández
- Zeiss Global Centre, School of Engineering, University of Portsmouth, Portsmouth PO1 3DJ, UK.
| | - Gordon Blunn
- School of Pharmacy and Biomedical Sciences, University of Portsmouth, Portsmouth PO1 2DT, UK.
| | - Gianluca Tozzi
- Zeiss Global Centre, School of Engineering, University of Portsmouth, Portsmouth PO1 3DJ, UK.
| | - Marta Roldo
- School of Pharmacy and Biomedical Sciences, University of Portsmouth, Portsmouth PO1 2DT, UK.
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Ahn S, Lee KY, Parker KK, Shin K. Formation of Multi-Component Extracellular Matrix Protein Fibers. Sci Rep 2018; 8:1913. [PMID: 29382927 PMCID: PMC5790006 DOI: 10.1038/s41598-018-20371-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Accepted: 01/17/2018] [Indexed: 01/04/2023] Open
Abstract
The extracellular matrix (ECM) consists of polymerized protein monomers that form a unique fibrous network providing stability and structural support to surrounding cells. We harnessed the fibrillogenesis mechanisms of naturally occurring ECM proteins to produce artificial fibers with a heterogeneous protein makeup. Using ECM proteins as fibril building blocks, we created uniquely structured multi-component ECM fibers. Sequential incubation of fibronectin (FN) and laminin (LAM) resulted in self-assembly into locally stacked fibers. In contrast, simultaneous incubation of FN with LAM or collagen (COL) produced molecularly stacked multi-component fibers because both proteins share a similar assembly mechanism or possess binding domains specific to each other. Sequential incubation of COL on FN fibers resulted in fibers with sandwiched layers because COL molecules bind to the external surface of FN fibers. By choosing proteins for incubation according to the interplay of their fibrillogenesis mechanisms and their binding domains (exposed when they unfold), we were able to create ECM protein fibers that have never before been observed.
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Affiliation(s)
- Seungkuk Ahn
- Department of Chemistry and Institute of Biological Interfaces, Sogang University, Seoul, 121-742, Republic of Korea
- Disease Biophysics Group, Wyss Institute for Biologically Inspired Engineering, John A. Paulson School of Engineering and Applied Sciences, Harvard University, 29 Oxford St., Pierce Hall 321, Cambridge, MA, 02138, USA
| | - Keel Yong Lee
- Department of Chemistry and Institute of Biological Interfaces, Sogang University, Seoul, 121-742, Republic of Korea
| | - Kevin Kit Parker
- Disease Biophysics Group, Wyss Institute for Biologically Inspired Engineering, John A. Paulson School of Engineering and Applied Sciences, Harvard University, 29 Oxford St., Pierce Hall 321, Cambridge, MA, 02138, USA
| | - Kwanwoo Shin
- Department of Chemistry and Institute of Biological Interfaces, Sogang University, Seoul, 121-742, Republic of Korea.
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45
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Cheema U, Hadjipanayi E, Tamimi N, Alp B, Mudera V, Brown RA. Identification of Key Factors in Deep O2 Cell Perfusion for Vascular Tissue Engineering. Int J Artif Organs 2018; 32:318-28. [DOI: 10.1177/039139880903200602] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Blood vessel engineering requires an understanding of the parameters governing the survival of resident vascular smooth muscle cells. We have developed an in vitro, collagen-based 3D model of vascular media to examine the correlation of cell density, O2 requirements, and viability. Dense collagen sheets (100 μxm) seeded with porcine pulmonary artery smooth muscle cells (PASMCs) at low or high (11.6 or 23.2x106 cells/mL) densities were spiraled around a mandrel to create tubular constructs and cultured for up to 6 days in vitro, under both static and dynamic perfusion conditions. Real-time in situ monitoring showed that within 24 hours core O2 tension dropped from 140 mmHg to 20 mmHg and 80 mmHg for high and low cell density static cultures, respectively, with no significant cell death associated with the lowest O2 tension. A significant reduction in core O2 tension to 60 mmHg was achieved by increasing the O2 diffusion distance of low cell density constructs by 33% (p<0.05). After 6 days of static, high cell density culture, viability significantly decreased in the core (55%), with little effect at the surface (75%), whereas dynamic perfusion in a re-circulating bioreactor (1 ml/min) significantly improved core viability (70%, p<0.05), largely eliminating the problem. This study has identified key parameters dictating vascular smooth muscle cell behavior in 3D engineered tissue culture.
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Affiliation(s)
- Umber Cheema
- University College London, Division of Surgical and Interventional Sciences, Institute of Orthopaedics and Musculoskeletal Sciences, Tissue Repair and Engineering Centre, Stanmore Campus, London - UK
| | - Ektoras Hadjipanayi
- University College London, Division of Surgical and Interventional Sciences, Institute of Orthopaedics and Musculoskeletal Sciences, Tissue Repair and Engineering Centre, Stanmore Campus, London - UK
| | - Noor Tamimi
- University College London, Division of Surgical and Interventional Sciences, Institute of Orthopaedics and Musculoskeletal Sciences, Tissue Repair and Engineering Centre, Stanmore Campus, London - UK
| | - Burcak Alp
- University College London, Division of Surgical and Interventional Sciences, Institute of Orthopaedics and Musculoskeletal Sciences, Tissue Repair and Engineering Centre, Stanmore Campus, London - UK
| | - Vivek Mudera
- University College London, Division of Surgical and Interventional Sciences, Institute of Orthopaedics and Musculoskeletal Sciences, Tissue Repair and Engineering Centre, Stanmore Campus, London - UK
| | - Robert A. Brown
- University College London, Division of Surgical and Interventional Sciences, Institute of Orthopaedics and Musculoskeletal Sciences, Tissue Repair and Engineering Centre, Stanmore Campus, London - UK
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46
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Peyton SR, Gencoglu MF, Galarza S, Schwartz AD. Biomaterials in Mechano-oncology: Means to Tune Materials to Study Cancer. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1092:253-287. [PMID: 30368757 DOI: 10.1007/978-3-319-95294-9_13] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
ECM stiffness is emerging as a prognostic marker of tumor aggression or potential for relapse. However, conflicting reports muddle the question of whether increasing or decreasing stiffness is associated with aggressive disease. This chapter discusses this controversy in more detail, but the fact that tumor stiffening plays a key role in cancer progression and in regulating cancer cell behaviors is clear. The impact of having in vitro biomaterial systems that could capture this stiffening during tumor evolution is very high. These cell culture platforms could help reveal the mechanistic underpinnings of this evolution, find new therapeutic targets to inhibit the cross talk between tumor development and ECM stiffening, and serve as better, more physiologically relevant platforms for drug screening.
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Affiliation(s)
- Shelly R Peyton
- Department of Chemical Engineering, University of Massachusetts Amherst, Amherst, MA, USA.
| | - Maria F Gencoglu
- Department of Chemical Engineering, University of Massachusetts Amherst, Amherst, MA, USA
| | - Sualyneth Galarza
- Department of Chemical Engineering, University of Massachusetts Amherst, Amherst, MA, USA
| | - Alyssa D Schwartz
- Department of Chemical Engineering, University of Massachusetts Amherst, Amherst, MA, USA
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47
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Turetta M, Del Ben F, Brisotto G, Biscontin E, Bulfoni M, Cesselli D, Colombatti A, Scoles G, Gigli G, del Mercato LL. Emerging Technologies for Cancer Research: Towards Personalized Medicine with Microfluidic Platforms and 3D Tumor Models. Curr Med Chem 2018; 25:4616-4637. [PMID: 29874987 PMCID: PMC6302350 DOI: 10.2174/0929867325666180605122633] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Revised: 07/24/2017] [Accepted: 05/03/2018] [Indexed: 02/07/2023]
Abstract
In the present review, we describe three hot topics in cancer research such as circulating tumor cells, exosomes, and 3D environment models. The first section is dedicated to microfluidic platforms for detecting circulating tumor cells, including both affinity-based methods that take advantage of antibodies and aptamers, and "label-free" approaches, exploiting cancer cells physical features and, more recently, abnormal cancer metabolism. In the second section, we briefly describe the biology of exosomes and their role in cancer, as well as conventional techniques for their isolation and innovative microfluidic platforms. In the third section, the importance of tumor microenvironment is highlighted, along with techniques for modeling it in vitro. Finally, we discuss limitations of two-dimensional monolayer methods and describe advantages and disadvantages of different three-dimensional tumor systems for cell-cell interaction analysis and their potential applications in cancer management.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Loretta L. del Mercato
- Address correspondence to this author at the CNR NANOTEC - Institute of Nanotechnology c/o Campus Ecotekne, via Monteroni, 73100, Lecce, Italy; E-mail:
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48
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Abstract
Bioinks, 3D cell culture systems which can be printed, are still in the early development stages. Currently, extensive research is going into designing printers to be more accommodating to bioinks, designing scaffolds with stiff materials as support structures for the often soft bioinks, and modifying the bioinks themselves. Recombinant spider silk proteins, a potential biomaterial component for bioinks, have high biocompatibility, can be processed into several morphologies and can be modified with cell adhesion motifs to enhance their bioactivity. In this work, thermally gelled hydrogels made from recombinant spider silk protein encapsulating mouse fibroblast cell line BALB/3T3 were prepared and characterized. The bioinks were evaluated for performance in vitro both before and after printing, and it was observed that unprinted bioinks provided a good platform for cell spreading and proliferation, while proliferation in printed scaffolds was prohibited. To improve the properties of the printed hydrogels, gelatin was given as an additive and thereby served indirectly as a plasticizer, improving the resolution of printed strands. Taken together, recombinant spider silk proteins and hydrogels made thereof show good potential as a bioink, warranting further development.
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Affiliation(s)
- Elise DeSimone
- Lehrstuhl Biomaterialien, Bayreuther Zentrum für Kolloide und Grenzflächen (BZKG), Bayreuther Zentrum für Bio-Makromoleküle (bio-mac), Bayreuther Zentrum für Molekulare Biowissenschaften (BZMB), Bayreuther Materialzentrum (BayMAT), Bayerisches Polymerinstitut (BPI) Universitätsstraße 30, Universität Bayreuth, Bayreuth D-95447, Germany
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49
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Low molecular weight hydrogels derived from urea based-bolaamphiphiles as new injectable biomaterials. Biomaterials 2017; 145:72-80. [DOI: 10.1016/j.biomaterials.2017.08.034] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Revised: 07/18/2017] [Accepted: 08/17/2017] [Indexed: 02/07/2023]
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50
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Templated Assembly of Collagen Fibers Directs Cell Growth in 2D and 3D. Sci Rep 2017; 7:9628. [PMID: 28852121 PMCID: PMC5575125 DOI: 10.1038/s41598-017-10182-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Accepted: 08/07/2017] [Indexed: 02/07/2023] Open
Abstract
Collagen is widely used in tissue engineering and regenerative medicine, with many examples of collagen-based biomaterials emerging in recent years. While there are numerous methods available for forming collagen scaffolds from isolated collagen, existing biomaterial processing techniques are unable to efficiently align collagen at the microstructural level, which is important for providing appropriate cell recognition and mechanical properties. Although some attention has shifted to development of fiber-based collagen biomaterials, existing techniques for producing and aligning collagen fibers are not appropriate for large-scale fiber manufacturing. Here, we report a novel biomaterial fabrication approach capable of efficiently generating collagen fibers of appropriate sizes using a viscous solution of dextran as a dissolvable template. We demonstrate that myoblasts readily attach and align along 2D collagen fiber networks created by this process. Furthermore, encapsulation of collagen fibers with myoblasts into non-cell-adherent hydrogels promotes aligned growth of cells and supports their differentiation. The ease-of-production and versatility of this technique will support future development of advanced in vitro tissue models and materials for regenerative medicine.
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