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Yu X. Application of Hydrogels in Cardiac Regeneration. Cardiol Ther 2023; 12:637-674. [PMID: 37979080 DOI: 10.1007/s40119-023-00339-0] [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: 08/07/2023] [Accepted: 10/20/2023] [Indexed: 11/19/2023] Open
Abstract
Myocardial infarction (MI) is a leading cause of death globally. Due to limited cardiac regeneration, infarcted myocardial tissue is gradually replaced by cardiac fibrosis, causing cardiac dysfunction, arrhythmia, aneurysm, free wall rupture, and sudden cardiac death. Thus, the development of effective methods to promote cardiac regeneration is extremely important for MI treatment. In recent years, hydrogels have shown promise in various methods for cardiac regeneration. Hydrogels can be divided into natural and synthetic types. Different hydrogels have different features and can be cross-linked in various ways. Hydrogels are low in toxicity and highly stable. Since they have good biocompatibility, biodegradability, and transformability, moderate mechanical properties, and proper elasticity, hydrogels are promising biomaterials for promoting cardiac regeneration. They can be used not only as scaffolds for migration of stem cells, but also as ideal carriers for delivery of drugs, genetic materials, stem cells, growth factors, cytokines, and small molecules. In this review, the application of hydrogels in cardiac regeneration during or post-MI is discussed in detail. Hydrogels open a promising new area in cardiac regeneration for treating MI.
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Affiliation(s)
- Xuejing Yu
- Division of Cardiology, Department of Internal Medicine, The University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX, 75235, USA.
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2
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Khanna A, Ayan B, Undieh AA, Yang YP, Huang NF. Advances in three-dimensional bioprinted stem cell-based tissue engineering for cardiovascular regeneration. J Mol Cell Cardiol 2022; 169:13-27. [PMID: 35569213 PMCID: PMC9385403 DOI: 10.1016/j.yjmcc.2022.04.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 04/05/2022] [Accepted: 04/23/2022] [Indexed: 10/18/2022]
Abstract
Three-dimensional (3D) bioprinting of cellular or biological components are an emerging field to develop tissue structures that mimic the spatial, mechanochemical and temporal characteristics of cardiovascular tissues. 3D multi-cellular and multi-domain organotypic biological constructs can better recapitulate in vivo physiology and can be utilized in a variety of applications. Such applications include in vitro cellular studies, high-throughput drug screening, disease modeling, biocompatibility analysis, drug testing and regenerative medicine. A major challenge of 3D bioprinting strategies is the inability of matrix molecules to reconstitute the complexity of the extracellular matrix and the intrinsic cellular morphologies and functions. An important factor is the inclusion of a vascular network to facilitate oxygen and nutrient perfusion in scalable and patterned 3D bioprinted tissues to promote cell viability and functionality. In this review, we summarize the new generation of 3D bioprinting techniques, the kinds of bioinks and printing materials employed for 3D bioprinting, along with the current state-of-the-art in engineered cardiovascular tissue models. We also highlight the translational applications of 3D bioprinting in engineering the myocardium cardiac valves, and vascular grafts. Finally, we discuss current challenges and perspectives of designing effective 3D bioprinted constructs with native vasculature, architecture and functionality for clinical translation and cardiovascular regeneration.
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Notbohm J, Napiwocki B, deLange W, Stempien A, Saraswathibhatla A, Craven R, Salick M, Ralphe J, Crone W. Two-Dimensional Culture Systems to Enable Mechanics-Based Assays for Stem Cell-Derived Cardiomyocytes. EXPERIMENTAL MECHANICS 2019; 59:1235-1248. [PMID: 31680699 PMCID: PMC6824432 DOI: 10.1007/s11340-019-00473-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Accepted: 01/09/2019] [Indexed: 06/10/2023]
Abstract
Well-controlled 2D cell culture systems advance basic investigations in cell biology and provide innovative platforms for drug development, toxicity testing, and diagnostic assays. These cell culture systems have become more advanced in order to provide and to quantify the appropriate biomechanical and biochemical cues that mimic the milieu of conditions present in vivo. Here we present an innovative 2D cell culture system to investigate human stem cell-derived cardiomyocytes, the muscle cells of the heart responsible for pumping blood throughout the body. We designed our 2D cell culture platform to control intracellular features to produce adult-like cardiomyocyte organization with connectivity and anisotropic conduction comparable to the native heart, and combined it with optical microscopy to quantify cell-cell and cell-substrate mechanical interactions. We show the measurement of forces and displacements that occur within individual cells, between neighboring cells, and between cells and their surrounding matrix. This system has broad potential to expand our understanding of tissue physiology, with particular advantages for the study of the mechanically active heart. Furthermore, this technique should prove valuable in screening potential drugs for efficacy and testing for toxicity.
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Affiliation(s)
- J. Notbohm
- Department of Engineering Physics, University of Wisconsin-Madison, Madison WI, USA
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison WI, USA
| | - B.N. Napiwocki
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison WI, USA
- Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison WI, USA
| | - W.J. deLange
- Department of Pediatrics, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - A. Stempien
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison WI, USA
- Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison WI, USA
| | - A. Saraswathibhatla
- Department of Engineering Physics, University of Wisconsin-Madison, Madison WI, USA
| | - R.J. Craven
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison WI, USA
- Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison WI, USA
| | - M.R. Salick
- Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison WI, USA
- Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison WI, USA
| | - J.C. Ralphe
- Department of Pediatrics, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - W.C. Crone
- Department of Engineering Physics, University of Wisconsin-Madison, Madison WI, USA
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison WI, USA
- Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison WI, USA
- Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison WI, USA
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4
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Chen Y, Chen S, Kawazoe N, Chen G. Promoted Angiogenesis and Osteogenesis by Dexamethasone-loaded Calcium Phosphate Nanoparticles/Collagen Composite Scaffolds with Microgroove Networks. Sci Rep 2018; 8:14143. [PMID: 30237563 PMCID: PMC6147787 DOI: 10.1038/s41598-018-32495-y] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Accepted: 09/07/2018] [Indexed: 11/09/2022] Open
Abstract
Reconstruction of large bone defects remains a clinical challenge because current approaches involving surgery and bone grafting often do not yield satisfactory outcomes. For artificial bone substitutes, angiogenesis plays a pivotal role to achieve the final success of newly regenerated bone. In this study, dexamethasone-loaded biphasic calcium phosphate nanoparticles/collagen composite scaffolds with several types of concave microgrooves were prepared for simultaneous promotion of angiogenesis and osteogenesis. Microgrooves in the scaffolds were supposed to guide the assembly of human umbilical vascular endothelial cells (HUVECs) into well aligned tubular structures, thus promoting rapid angiogenesis. The scaffolds were used for co-culture of HUVECs and human bone marrow-derived mesenchymal stem cells. Subcutaneous implantation in mice showed that more blood vessels and newly formed bone were observed in the microgrooved composite scaffolds than in the control scaffold. Scaffold bearing parallel microgrooves with a concave width of 290 µm and a convex ridge width of 352 µm showed the highest promotion effect on angiogenesis and osteogenesis among the parallelly microgrooved composite scaffolds. The scaffolds bearing a grid network had further superior promotion effect to the scaffolds bearing parallel microgrooves. The results indicated that microgrooves in the composite scaffolds facilitated angiogenesis and stimulated new bone formation. The microgrooved composite scaffolds should be useful for repairing of large bone defects.
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Affiliation(s)
- Ying Chen
- Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
- Department of Materials Science and Engineering, Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8577, Japan
| | - Shangwu Chen
- Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
- Department of Materials Science and Engineering, Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8577, Japan
| | - Naoki Kawazoe
- Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Guoping Chen
- Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan.
- Department of Materials Science and Engineering, Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8577, Japan.
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Ong CS, Nam L, Ong K, Krishnan A, Huang CY, Fukunishi T, Hibino N. 3D and 4D Bioprinting of the Myocardium: Current Approaches, Challenges, and Future Prospects. BIOMED RESEARCH INTERNATIONAL 2018; 2018:6497242. [PMID: 29850546 PMCID: PMC5937623 DOI: 10.1155/2018/6497242] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Revised: 03/04/2018] [Accepted: 03/15/2018] [Indexed: 12/19/2022]
Abstract
3D and 4D bioprinting of the heart are exciting notions in the modern era. However, myocardial bioprinting has proven to be challenging. This review outlines the methods, materials, cell types, issues, challenges, and future prospects in myocardial bioprinting. Advances in 3D bioprinting technology have significantly improved the manufacturing process. While scaffolds have traditionally been utilized, 3D bioprinters, which do not require scaffolds, are increasingly being employed. Improved understanding of the cardiac cellular composition and multiple strategies to tackle the issues of vascularization and viability had led to progress in this field. In vivo studies utilizing small animal models have been promising. 4D bioprinting is a new concept that has potential to advance the field of 3D bioprinting further by incorporating the fourth dimension of time. Clinical translation will require multidisciplinary collaboration to tackle the pertinent issues facing this field.
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Affiliation(s)
- Chin Siang Ong
- Division of Cardiac Surgery, Johns Hopkins Hospital, Baltimore, MD, USA
- Division of Cardiology, Johns Hopkins Hospital, Baltimore, MD, USA
| | - Lucy Nam
- Division of Cardiac Surgery, Johns Hopkins Hospital, Baltimore, MD, USA
| | - Kingsfield Ong
- Department of Cardiac, Thoracic and Vascular Surgery, National University Heart Centre, Singapore
| | - Aravind Krishnan
- Division of Cardiac Surgery, Johns Hopkins Hospital, Baltimore, MD, USA
| | - Chen Yu Huang
- Division of Cardiology, Johns Hopkins Hospital, Baltimore, MD, USA
| | - Takuma Fukunishi
- Division of Cardiac Surgery, Johns Hopkins Hospital, Baltimore, MD, USA
| | - Narutoshi Hibino
- Division of Cardiac Surgery, Johns Hopkins Hospital, Baltimore, MD, USA
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6
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Salick MR, Napiwocki BN, Sha J, Knight GT, Chindhy SA, Kamp TJ, Ashton RS, Crone WC. Micropattern width dependent sarcomere development in human ESC-derived cardiomyocytes. Biomaterials 2014; 35:4454-64. [PMID: 24582552 PMCID: PMC4026015 DOI: 10.1016/j.biomaterials.2014.02.001] [Citation(s) in RCA: 105] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2014] [Accepted: 02/04/2014] [Indexed: 12/12/2022]
Abstract
In this study, human embryonic stem cell-derived cardiomyocytes were seeded onto controlled two-dimensional micropatterned features, and an improvement in sarcomere formation and cell alignment was observed in specific feature geometries. High-resolution photolithography techniques and microcontact printing were utilized to produce features of various rectangular geometries, with areas ranging from 2500 μm(2) to 160,000 μm(2). The microcontact printing method was used to pattern non-adherent poly(ethylene glycol) regions on gold coated glass slides. Matrigel and fibronectin extracellular matrix (ECM) proteins were layered onto the gold-coated glass slides, providing a controlled geometry for cell adhesion. We used small molecule-based differentiation and an antibiotic purification step to produce a pure population of immature cardiomyocytes from H9 human embryonic stem cells (hESCs). We then seeded this pure population of human cardiomyocytes onto the micropatterned features of various sizes and observed how the cardiomyocytes remodeled their myofilament structure in response to the feature geometries. Immunofluorescence was used to measure α-actinin expression, and phalloidin stains were used to detect actin presence in the patterned cells. Analysis of nuclear alignment was also used to determine how cell direction was influenced by the features. The seeded cells showed clear alignment with the features, dependent on the width rather than the overall aspect ratio of the features. It was determined that features with widths between 30 μm and 80 μm promoted highly aligned cardiomyocytes with a dramatic increase in sarcomere alignment relative to the long axis of the pattern. This creation of highly-aligned cell aggregates with robust sarcomere structures holds great potential in advancing cell-based pharmacological studies, and will help researchers to understand the means by which ECM geometries can affect myofilament structure and maturation in hESC-derived cardiomyocytes.
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Affiliation(s)
- Max R Salick
- Wisconsin Institutes for Discovery, 330 N Orchard St, Madison, WI 53715, USA; Department of Engineering Physics, University of Wisconsin - Madison, 1500 Engineering Drive, Madison, WI 53706, USA; Materials Science Program, University of Wisconsin - Madison, 1509 University Ave, Madison, WI 53706, USA
| | - Brett N Napiwocki
- Wisconsin Institutes for Discovery, 330 N Orchard St, Madison, WI 53715, USA; Department of Biomedical Engineering, University of Wisconsin - Madison, 1550 Engineering Drive, Madison, WI 53706, USA
| | - Jin Sha
- Wisconsin Institutes for Discovery, 330 N Orchard St, Madison, WI 53715, USA; School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, China
| | - Gavin T Knight
- Wisconsin Institutes for Discovery, 330 N Orchard St, Madison, WI 53715, USA; Department of Biomedical Engineering, University of Wisconsin - Madison, 1550 Engineering Drive, Madison, WI 53706, USA
| | - Shahzad A Chindhy
- Department of Medicine, School of Medicine and Public Health, University of Wisconsin - Madison, 750 Highland Ave, Madison, WI 53706, USA
| | - Timothy J Kamp
- Wisconsin Institutes for Discovery, 330 N Orchard St, Madison, WI 53715, USA; Department of Medicine, School of Medicine and Public Health, University of Wisconsin - Madison, 750 Highland Ave, Madison, WI 53706, USA; WiCell Institute, 614 Walnut Street, Madison, WI 53726, USA; Department of Cell and Regenerative Biology, School of Medicine and Public Health, University of Wisconsin - Madison, 1300 University Ave, Madison, WI 53706, USA
| | - Randolph S Ashton
- Wisconsin Institutes for Discovery, 330 N Orchard St, Madison, WI 53715, USA; Department of Biomedical Engineering, University of Wisconsin - Madison, 1550 Engineering Drive, Madison, WI 53706, USA
| | - Wendy C Crone
- Wisconsin Institutes for Discovery, 330 N Orchard St, Madison, WI 53715, USA; Department of Engineering Physics, University of Wisconsin - Madison, 1500 Engineering Drive, Madison, WI 53706, USA; Materials Science Program, University of Wisconsin - Madison, 1509 University Ave, Madison, WI 53706, USA; Department of Biomedical Engineering, University of Wisconsin - Madison, 1550 Engineering Drive, Madison, WI 53706, USA.
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7
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Wang L, Liu L, Magome N, Agladze K, Chen Y. Influence of patterned topographic features on the formation of cardiac cell clusters and their rhythmic activities. Biofabrication 2013; 5:035013. [DOI: 10.1088/1758-5082/5/3/035013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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8
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Chang WT, Yu D, Lai YC, Lin KY, Liau I. Characterization of the Mechanodynamic Response of Cardiomyocytes with Atomic Force Microscopy. Anal Chem 2013; 85:1395-400. [DOI: 10.1021/ac3022532] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Wei-Tien Chang
- National Taiwan University Hospital and College of Medicine, Taipei 100, Taiwan
| | - David Yu
- Department of Applied Chemistry and Institute of Molecular Science, National Chiao Tung University, 1001 University Road, Hsinchu 30010, Taiwan
| | - Yu-Cheng Lai
- Department of Applied Chemistry and Institute of Molecular Science, National Chiao Tung University, 1001 University Road, Hsinchu 30010, Taiwan
| | - Kuen-You Lin
- Department of Applied Chemistry and Institute of Molecular Science, National Chiao Tung University, 1001 University Road, Hsinchu 30010, Taiwan
| | - Ian Liau
- Department of Applied Chemistry and Institute of Molecular Science, National Chiao Tung University, 1001 University Road, Hsinchu 30010, Taiwan
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9
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Natarajan A, Stancescu M, Dhir V, Armstrong C, Sommerhage F, Hickman JJ, Molnar P. Patterned cardiomyocytes on microelectrode arrays as a functional, high information content drug screening platform. Biomaterials 2011; 32:4267-74. [PMID: 21453966 DOI: 10.1016/j.biomaterials.2010.12.022] [Citation(s) in RCA: 97] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2010] [Accepted: 12/14/2010] [Indexed: 01/24/2023]
Abstract
Cardiac side effects are one of the major causes of drug candidate failures in preclinical drug development or in clinical trials and are responsible for the retraction of several already marketed therapeutics. Thus, the development of a relatively high-throughput, high information content tool to screen drugs and toxins would be important in the field of cardiac research and drug development. In this study, recordings from commercial multielectrode arrays were combined with surface patterning of cardiac myocyte monolayers to enhance the information content of the method; specifically, to enable the measurement of conduction velocity, refractory period after action potentials and to create a functional re-entry model. Two drugs, 1-Heptanol, a gap junction blocker, and Sparfloxacin, a fluoroquinone antibiotic, were tested in this system. 1-Heptanol administration resulted in a marked reduction in conduction velocity, whereas Sparfloxacin caused rapid, irregular and unsynchronized activity, indicating fibrillation. As shown in these experiments, patterning of cardiac myocyte monolayers solved several inherent problems of multielectrode recordings, increased the temporal resolution of conduction velocity measurements, and made the synchronization of external stimulation with action potential propagation possible for refractory period measurements. This method could be further developed as a cardiac side effect screening platform after combination with human cardiomyocytes.
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Affiliation(s)
- Anupama Natarajan
- University of Central Florida, NanoScience Technology Center, Orlando, FL 32826, USA
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10
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Wan CR, Frohlich EM, Charest JL, Kamm RD. Effect of Surface Patterning and Presence of Collagen I on the Phenotypic Changes of Embryonic Stem Cell Derived Cardiomyocytes. Cell Mol Bioeng 2010. [DOI: 10.1007/s12195-010-0150-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
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11
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Lin SP, Chen JJJ, Liao JD, Tzeng SF. Characterization of surface modification on microelectrode arrays for in vitro cell culture. Biomed Microdevices 2008; 10:99-111. [PMID: 17674208 DOI: 10.1007/s10544-007-9114-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
This study aims to investigate surface-modified microelectrodes on the microelectrode arrays (MEAs) for neuronal interfaces with in vitro cell culture. The polyimide (PI) MEA was fabricated by using micro-electro-mechanical systems (MEMS) techniques. Self-assembled monolayers (SAMs) of 11-mercaptoundecanoic acid (MUA) were utilized to modify the microelectrode surface of the MEA. The SAMs' modified surface of microelectrodes offered a reliable interface to immobilize biological ligands through covalent bonding. To increase biocompatibility, the poly-D-lysine (PDL) was immobilized on the SAMs' modified microelectrodes. Several analytical techniques were used to define the physical structure and functional groups of surface-modified gold microelectrodes on the MEA. Spectra of the Fourier transform infrared reflection (FTIR) were applied to characterize the molecular structure of MUA-SAMs and PDL on the microelectrodes. The spectra, two peaks of amide I (at 1,613 cm(-1)) and amide II (at 1,548 cm(-1)), revealed that covalent amide bonding existed in PDL-MUA-SAMs modified surfaces. The thickness and formation of the MUA and PDL were also observed and quantified by using an atomic force microscope (AFM). The impedance measurement of PDL-MUA-SAMs modified MEA only increased slightly to an average of 524.6 +/- 55.8 kOmega from 352.9 +/- 34.4 kOmega of bare gold microelectrode (p < 0.05, N = 20). In addition, the time-course changes of total impedance resulting from cell sealing resistance and gap reactance were recorded for 7 days for inferring the growth of cell lines on the electrode contact of modified MEA. The experiment of 3T3 fibroblasts, PC12 cells, primary glial cells, and primary cortical neurons cultured on the modified MEAs displayed a good adhesion rate. These biocompatibility assays demonstrated that the neuronal cells are able to grow in a proximity to PDL-MUA-SAMs modified microelectrodes of the MEAs for effective electrophysiological stimulation/sensing schemes and for future implantation purposes.
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Affiliation(s)
- Shu-Ping Lin
- Institute of Biomedical Engineering, National Cheng Kung University, No. 1 Ta-Hsueh Road, Tainan, Taiwan, Republic of China
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12
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Kaneko T, Kojima K, Yasuda K. Dependence of the community effect of cultured cardiomyocytes on the cell network pattern. Biochem Biophys Res Commun 2007; 356:494-8. [PMID: 17359936 DOI: 10.1016/j.bbrc.2007.03.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2007] [Accepted: 03/01/2007] [Indexed: 10/23/2022]
Abstract
To elucidate the role of the community effect in cardiomyocytes, we developed an on-chip single-cell-based culture system with which the dynamics of the change of beat rate and beat rate fluctuation of cultured cardiomyocytes can be measured at the single-cell level before and after the formation of a cell network. We examined the dependence of the community effect on cell network pattern by culturing cardiomyocytes in differently shaped microchambers and investigated the relation between the network pattern and the stability of the beat rate. We found that beat rate fluctuation tends to decrease as cell-community size increases, irrespective of cell network pattern. This indicates that on-chip single-cell-based cardiomyocyte communities might be able to model a heart tissue accurately enough to be used in practical applications such as drug screening.
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Affiliation(s)
- Tomoyuki Kaneko
- Department of Biomedical Information, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Chiyoda-ku, Tokyo 101-0062, Japan
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13
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Nishizawa M, Nozaki H, Kaji H, Kitazume T, Kobayashi N, Ishibashi T, Abe T. Electrodeposition of anchored polypyrrole film on microelectrodes and stimulation of cultured cardiac myocytes. Biomaterials 2007; 28:1480-5. [PMID: 17166583 DOI: 10.1016/j.biomaterials.2006.11.034] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2006] [Accepted: 11/18/2006] [Indexed: 10/23/2022]
Abstract
The electrically conducting polymer polypyrrole (PPy) was electrochemically deposited onto Pt microelectrodes on a polyimide (PI) substrate. Pre-modification of the PI surface with a self-assembled monolayer of octadecyltrichlorosilane-induced anisotropic lateral growth of PPy along the PI surface and enhanced adhesive strength of the PPy film. The lateral growth of PPy film around the electrode anchored the whole film to the substrate. External stimulation of cultured cardiac myocytes was carried out using the PPy-coated microelectrode. The myocytes on the microelectrode substrate were electrically conjugated to form a sheet, and showed synchronized beating upon stimulation. The threshold charge for effective stimulation of a 0.8 cm(2) sheet of myocytes was around 0.2 microC, roughly corresponding to a membrane depolarization of 250 mV.
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Affiliation(s)
- Matsuhiko Nishizawa
- Department of Bioengineering and Robotics, Graduate School of Engineering, Tohoku University, Aramaki-Aoba 6-6-01, Sendai 980-8579, Japan.
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14
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Wang C, Zhang Y, Seng HS, Ngo LL. Nanoparticle-assisted micropatterning of active proteins on solid substrate. Biosens Bioelectron 2006; 21:1638-43. [PMID: 16095896 DOI: 10.1016/j.bios.2005.07.008] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2005] [Revised: 06/24/2005] [Accepted: 07/06/2005] [Indexed: 10/25/2022]
Abstract
Micropatterning of proteins on silica substrate was achieved using a new method. Proteins were first immobilized onto silica nanoparticles which were then dispensed into arrayed microwells on silicon. Atomic force microscopy (AFM), fluorescence microscopy and Fourier transform infrared (FTIR) spectroscopy were used to characterize the samples. The results showed that, compared to a planar surface, curved surfaces of nanoparticles provide more space for attaching proteins and thus increases the intensity of fluorescence signal. Furthermore, after attaching to silica nanoparticles, bovine serum albumin (BSA) maintains its major structure and the cytokine IFN-gamma maintains its ability to bind to its antibody. Use of this method can be extended to micropatterning of other biomolecules, such as DNA and enzymes.
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Affiliation(s)
- Chun Wang
- Division of Bioengineering, Faculty of Engineering, National University of Singapore
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15
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Langowski BA, Uhrich KE. Oxygen plasma-treatment effects on Si transfer. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2005; 21:6366-72. [PMID: 15982043 DOI: 10.1021/la046795v] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Oxygen plasma-treatment is commonly used to increase the hydrophilicity of poly(dimethylsiloxane) (PDMS) stamps used for microcontact printing (muCP) aqueous-based inks. Review of the literature reveals that a wide range of plasma parameters are currently employed to modify stamp surfaces. However, little is known about the effect of these parameters (e.g., power, chamber pressure, duration) on the undesirable transfer of low-molecular-weight silicon-containing fragments from the stamps that commonly occurs during muCP. To study the effect of oxygen plasma-treatment on Si transfer, unpatterned PDMS stamps were treated with oxygen plasma under various conditions and used to stamp deionized water on plasma-activated poly(methyl methacrylate) (PMMA) substrates. Once stamped, the PMMA substrates were analyzed with X-ray photoelectron spectroscopy (XPS) to quantify and characterize silicon present on the substrate surface. In addition, used PDMS stamps were analyzed with scanning electron microscopy (SEM) to observe topographical changes that occur during oxygen plasma-treatment. XPS results show that all plasma treatments studied significantly reduced the amount of Si transfer from the treated stamps during muCP as compared to untreated PDMS stamps and that the source of transfer is residual PDMS fragments not removed by oxygen plasma. SEM results show that, although the treated stamps undergo a variety of topographical changes, no correlation exists between stamp topography and extent of Si transfer from the stamps.
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Affiliation(s)
- Bryan A Langowski
- Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, New Jersey 08854, USA
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16
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Vernon RB, Gooden MD, Lara SL, Wight TN. Microgrooved fibrillar collagen membranes as scaffolds for cell support and alignment. Biomaterials 2005; 26:3131-40. [PMID: 15603808 DOI: 10.1016/j.biomaterials.2004.08.011] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2004] [Accepted: 08/17/2004] [Indexed: 11/24/2022]
Abstract
For several years, microgrooved substrates have been evaluated as a means to orient cells in engineered tissues. Recently, we fabricated thin (0.1-5.3 microm) planar and tubular collagen membranes (CMs) from air-dried hydrogels of native, fibrillar type I collagen (Vernon et al., Biomaterials 2004;26:1109-17). The CMs were strong, stable, and permeable and, hence, of potential use as scaffolds for tissue engineering. In the present study, planar CMs supported a robust attachment, spreading, and proliferation of human dermal fibroblasts (HDFs) and human umbilical artery smooth muscle cells (HUASMCs). Collagen hydrogels were air-dried onto microgrooved templates and subsequently removed in the form of grooved CMs with the potential to align cells. The grooved CMs were highly effective at inducing HDFs and HUASMCs to elongate and align, as revealed by scanning electron microscopy and by assays of f-actin and nuclear orientation. Alignment of cells was maintained at high cell densities. CMs with grooves of substantially different widths and depths were similarly effective in causing cell alignment; however, cells aligned poorly on CMs that had grooves less than 1 microm in depth. Grooved CMs with the capability to align cells might be of considerable use in the fabrication of tissue substitutes.
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Affiliation(s)
- Robert B Vernon
- Hope Heart Program, Benaroya Research Institute at Virginia Mason, 1201 Ninth Avenue, Seattle, WA 98101-2795, USA.
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Torisawa YSYS, Shiku H, Yasukawa T, Nishizawa M, Matsue T. Multi-channel 3-D cell culture device integrated on a silicon chip for anticancer drug sensitivity test. Biomaterials 2005; 26:2165-72. [PMID: 15576192 DOI: 10.1016/j.biomaterials.2004.05.028] [Citation(s) in RCA: 85] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2004] [Accepted: 05/12/2004] [Indexed: 11/29/2022]
Abstract
A novel three-dimensional cell culture system was constructed with an array of cell panels (4 x 5) in a silicon chip, together with multi-channel drug containers. Human breast cancer (MCF-7) cells were embedded in a collagen-gel matrix and entrapped in a pyramidal-shaped silicon hole. Each cell panel can be isolated by a channel composed of a microfluid part and a reservoir. A cell panel was exposed to 200 mm KCN for 2 days to demonstrate that each cell panel could be independently evaluated under various stimulation conditions. Based on the cellular respiration activity, the proliferation behavior was continuously monitored on the silicon-based cell array for 5 days using scanning electrochemical microscopy (SECM). The cells entrapped in the device (3-D culture) proliferated normally, and the proliferation rate was lower than that of cells grown in a monolayer cell culture (2-D culture). The effects of three anticancer drugs measured simultaneously on the cell chip were in good agreement with those obtained by a conventional colorimetric assay. Our results suggest that the silicon-based device for 3D culture is appropriate for a chemosensitivity assay involving multi-chemical stimulation.
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Affiliation(s)
- Y-S Yu-Suke Torisawa
- Graduate School of Environmental Studies, Tohoku University, Aramaki Aoba 07, Sendai 980-8579, Miyagi, Japan
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Kimura T, Sato Y, Kimura F, Iwasaka M, Ueno S. Micropatterning of cells using modulated magnetic fields. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2005; 21:830-2. [PMID: 15667156 DOI: 10.1021/la047517z] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
A new technique of cell micropatterning was presented. Mouse osteoblast cells (MC3T3-E1) were seeded on a substrate whose surface was exposed to a periodically modulated magnetic field (a line pattern with a 200- or 600-microm pitch) produced by a field modulator inserted into a homogeneous magnetic field of 1 T generated by an electromagnet. The cells were trapped consistent with the line profile of the modulated field. The trapping efficiency was enhanced by adding Mn(II)EDTA (paramagnetic) to the cultivation medium. The cells were subsequently incubated in the magnetic field. The same technique was applied to whole blood to pattern red blood cells.
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Affiliation(s)
- Tsunehisa Kimura
- Department of Applied Chemistry, Tokyo Metropolitan University, 1-1 Minami-ohsawa, Hachioji, Tokyo 192-0397, Japan.
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Takoh K, Takahashi A, Matsue T, Nishizawa M. A porous membrane-based microelectroanalytical technique for evaluating locally stimulated culture cells. Anal Chim Acta 2004. [DOI: 10.1016/j.aca.2004.06.053] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Kaji H, Kanada M, Oyamatsu D, Matsue T, Nishizawa M. Microelectrochemical approach to induce local cell adhesion and growth on substrates. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2004; 20:16-9. [PMID: 15744990 DOI: 10.1021/la035537f] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
The nature of an albumin-coated substrate that blocks protein adsorption and cell adhesion was rapidly switched to cell-adhesive by exposure to an oxidizing agent such as HBrO. This finding has enabled cellular pattern drawing even on a single-cell level by closely scanning a microelectrode above the substrate and electrochemically producing the agent at the tip of the electrode. The present microelectrochemical cell patterning is applicable even for a previously cell-patterned substrate and for a grooved substrate. These unique technical features will have impacts on a variety of cell-based studies that require the analysis of heterotypic cell-cell interactions and cellular arrangement on an uneven surface such as semiconductor devices.
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TORISAWA YS, SHIKU H, YASUKAWA T, MATSUE T. Bioassay using living cells integrated on a chip. BUNSEKI KAGAKU 2004. [DOI: 10.2116/bunsekikagaku.53.367] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
| | - Hitoshi SHIKU
- Graduate School of Environmental Studies, Tohoku University
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TAKII Y, KAJI H, MATSUE T, NISHIZAWA M. Microstamp-Based Micromachining for Modulation of Growth of Cultured Neuronal Cells. ACTA ACUST UNITED AC 2004. [DOI: 10.1299/jsmec.47.956] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yuki TAKII
- Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University
| | - Hirokazu KAJI
- Department of Bioengineering and Robotics, Graduate School of Engineering, Tohoku University
| | - Tomokazu MATSUE
- Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University
| | - Matsuhiko NISHIZAWA
- Department of Bioengineering and Robotics, Graduate School of Engineering, Tohoku University
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