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TABATA M, MIYAHARA Y. Control of interface functions in solid-state biosensors for stable detection of molecular recognition. PROCEEDINGS OF THE JAPAN ACADEMY. SERIES B, PHYSICAL AND BIOLOGICAL SCIENCES 2024; 100:32-56. [PMID: 38199246 PMCID: PMC10864167 DOI: 10.2183/pjab.100.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Accepted: 09/25/2023] [Indexed: 01/12/2024]
Abstract
Significant progress has been achieved in the field of solid-state biosensors over the past 50 years. Various sensing devices with high-density integration and flexible configuration, as well as new applications for clinical diagnosis and healthcare, have been developed using blood, serum, and other body fluids such as sweat, tears, and saliva. A high-density array of ion-sensitive field effect transistors was developed by exploiting the advantages of advanced semiconductor technologies and commercialized in combination with an enzymatic primer extension reaction as a DNA sequencer in 2011. Different types of materials such as inorganic materials, metals, polymers, and biomolecules are mixed together on the surface of the gate while maintaining their own functions; therefore, compatibility among different materials has to be optimized so that the best detection performance of solid-state biosensors, including stability and reliability, is achieved as designed. Solid-state biosensors are suitable for the rapid, cost-effective, and noninvasive identification of biomarkers at various timepoints over the course of a disease.
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Affiliation(s)
- Miyuki TABATA
- Graduate School of Bio-Applications and Systems Engineering, Tokyo University of Agriculture and Technology, Koganei, Tokyo, Japan
| | - Yuji MIYAHARA
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo, Japan
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Yao Z, Lundqvist E, Kuang Y, Ardoña HAM. Engineering Multi-Scale Organization for Biotic and Organic Abiotic Electroactive Systems. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2205381. [PMID: 36670065 PMCID: PMC10074131 DOI: 10.1002/advs.202205381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Revised: 12/16/2022] [Indexed: 06/17/2023]
Abstract
Multi-scale organization of molecular and living components is one of the most critical parameters that regulate charge transport in electroactive systems-whether abiotic, biotic, or hybrid interfaces. In this article, an overview of the current state-of-the-art for controlling molecular order, nanoscale assembly, microstructure domains, and macroscale architectures of electroactive organic interfaces used for biomedical applications is provided. Discussed herein are the leading strategies and challenges to date for engineering the multi-scale organization of electroactive organic materials, including biomolecule-based materials, synthetic conjugated molecules, polymers, and their biohybrid analogs. Importantly, this review provides a unique discussion on how the dependence of conduction phenomena on structural organization is observed for electroactive organic materials, as well as for their living counterparts in electrogenic tissues and biotic-abiotic interfaces. Expansion of fabrication capabilities that enable higher resolution and throughput for the engineering of ordered, patterned, and architecture electroactive systems will significantly impact the future of bioelectronic technologies for medical devices, bioinspired harvesting platforms, and in vitro models of electroactive tissues. In summary, this article presents how ordering at multiple scales is important for modulating transport in both the electroactive organic, abiotic, and living components of bioelectronic systems.
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Affiliation(s)
- Ze‐Fan Yao
- Department of Chemical and Biomolecular EngineeringSamueli School of EngineeringUniversity of CaliforniaIrvineCA92697USA
- Department of ChemistrySchool of Physical SciencesUniversity of CaliforniaIrvineCA92697USA
| | - Emil Lundqvist
- Department of Biomedical EngineeringSamueli School of EngineeringUniversity of CaliforniaIrvineCA92697USA
| | - Yuyao Kuang
- Department of Chemical and Biomolecular EngineeringSamueli School of EngineeringUniversity of CaliforniaIrvineCA92697USA
| | - Herdeline Ann M. Ardoña
- Department of Chemical and Biomolecular EngineeringSamueli School of EngineeringUniversity of CaliforniaIrvineCA92697USA
- Department of ChemistrySchool of Physical SciencesUniversity of CaliforniaIrvineCA92697USA
- Department of Biomedical EngineeringSamueli School of EngineeringUniversity of CaliforniaIrvineCA92697USA
- Sue & Bill Gross Stem Cell Research CenterUniversity of CaliforniaIrvineCA92697USA
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Tabata M, Liu X, Khamhanglit C, Kotaki S, Miyahara Y. Detection of Epidermal Growth Factor Receptor Expression in Breast Cancer Cell Lines Using an Ion-Sensitive Field-Effect Transistor in Combination with Enzymatic Chemical Signal Amplification. J Am Chem Soc 2022; 144:16545-16552. [PMID: 36054724 DOI: 10.1021/jacs.2c06122] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A novel strategy for epidermal growth factor receptor (EGFR) detection using a cell-based field-effect transistor (FET) with enzymatic chemical signal amplification is proposed. Four human breast cancer cell lines [BT474, MDA-MB-231 (MM231), MDA-MB-468 (MM468), and MDA-MB-453 (MM453)] were used to compare the expression levels of EGFR. The cells were non-specifically captured on the surface of the gate of the FET, irrespective of their surface antigens. With this configuration, the heterogeneity of the cells would be analyzed using secondary antibodies conjugated to different kinds of enzymes. Four breast cancer cell lines with different levels of EGFR expression were captured on the respective surfaces of the extracellular matrix (ECM) gel-coated gates of the FETs. Glucose oxidase (GOx) was conjugated to the secondary antibody, and the output signals of the cell-based FETs changed depending on the expression levels of EGFR upon addition of glucose. The order of the expression levels of EGFR among the four cell lines, determined with the cell-based FETs, was consistent with the results of fluorescence detection determined by fluorescence-activated cell sorting (FACS). The cell-based FETs are advantageous for miniaturization and in massive parallel analyses of target molecules expressed on the membranes of cells and EVs, and their small size and cost effectiveness for cancer testing could enable their realization in a future liquid biopsy.
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Affiliation(s)
- Miyuki Tabata
- Tokyo Medical and Dental University, 2-3-10 Kanda-Surugadai, Chiyoda, Tokyo 101-0062 Japan
| | - Xinyue Liu
- Tokyo Medical and Dental University, 2-3-10 Kanda-Surugadai, Chiyoda, Tokyo 101-0062 Japan
| | - Chattarika Khamhanglit
- Tokyo Medical and Dental University, 2-3-10 Kanda-Surugadai, Chiyoda, Tokyo 101-0062 Japan
| | - Sayo Kotaki
- Tokyo Medical and Dental University, 2-3-10 Kanda-Surugadai, Chiyoda, Tokyo 101-0062 Japan
| | - Yuji Miyahara
- Tokyo Medical and Dental University, 2-3-10 Kanda-Surugadai, Chiyoda, Tokyo 101-0062 Japan
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Zhang X, Zhang M, Wu M, Yang L, Liu R, Zhang R, Zhao T, Song C, Liu G, Zhu Q. Photoresponsive Bridged Polysilsesquioxanes for Protein Immobilization/Controlled Release and Micropatterns. ACS APPLIED MATERIALS & INTERFACES 2021; 13:36370-36379. [PMID: 34297533 DOI: 10.1021/acsami.1c10542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Protein micropatterning on microfabricated surfaces is a promising technology in applications for biochip microarrays, cell attachment, and biosensors. In the present work, a novel photoresponsive polymer based on light-triggered charge shifting bridged polysilsesquioxane (CBPS) is designed and prepared. The organic bridged units containing a photocleavable group of diethylaminocoumarin-4-yl in CBPS could be cleaved rapidly upon irradiation at 410 nm, resulting in the polymer surface switching from a positive charge to a negative charge property. The photoresponsive behavior of CBPS is studied using FTIR, UV-vis, SEM, fluorescence microscopy, and zeta potential analysis. Proteins are easily immobilized on the polymer surface via electrostatic interactions and released after irradiation as required. Combined with photopatterning techniques, accurate protein micropatterns are fabricated by covering a photomask upon irradiation. A gradient protein pattern is also spatially and temporally controlled by regulating irradiation parameters. This smart photoresponsive polymer surface provides a gentle and straightforward strategy to micropattern charged proteins. Moreover, the photoresponsive polymer holds permitting potential in biomedical applications such as conjugating biomolecules, guiding cell arrays, and resisting bacteria.
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Affiliation(s)
- Xin Zhang
- Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Mengmeng Zhang
- Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Mingyue Wu
- Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Linchuan Yang
- Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Rui Liu
- Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Rui Zhang
- Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Tongtong Zhao
- Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Ci Song
- Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Gang Liu
- Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Qingzeng Zhu
- Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
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Deng C, Xu C, Zhou Q, Cheng Y. Advances of nanotechnology in osteochondral regeneration. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2019; 11:e1576. [PMID: 31329375 DOI: 10.1002/wnan.1576] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 06/24/2019] [Accepted: 06/26/2019] [Indexed: 12/28/2022]
Abstract
In the past few decades, nanotechnology has proven to be one of the most powerful engineering strategies. The nanotechnologies for osteochondral tissue engineering aim to restore the anatomical structures and physiological functions of cartilage, subchondral bone, and osteochondral interface. As subchondral bone and articular cartilage have different anatomical structures and the physiological functions, complete healing of osteochondral defects remains a great challenge. Considering the limitation of articular cartilage to self-healing and the complexity of osteochondral tissue, osteochondral defects are in urgently need for new therapeutic strategies. This review article will concentrate on the most recent advancements of nanotechnologies, which facilitates chondrogenic and osteogenic differentiation for osteochondral regeneration. Moreover, this review will also discuss the current strategies and physiological challenges for the regeneration of osteochondral tissue. Specifically, we will summarize the latest developments of nanobased scaffolds for simultaneously regenerating subchondral bone and articular cartilage tissues. Additionally, perspectives of nanotechnology in osteochondral tissue engineering will be highlighted. This review article provides a comprehensive summary of the latest trends in cartilage and subchondral bone regeneration, paving the way for nanotechnologies in osteochondral tissue engineering. This article is categorized under: Implantable Materials and Surgical Technologies > Nanomaterials and Implants Nanotechnology Approaches to Biology > Nanoscale Systems in Biology Implantable Materials and Surgical Technologies > Nanotechnology in Tissue Repair and Replacement.
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Affiliation(s)
- Cuijun Deng
- Shanghai East Hospital, The Institute for Biomedical Engineering & Nano Science, Tongji University School of Medicine, Shanghai, China
| | - Chang Xu
- Shanghai East Hospital, The Institute for Biomedical Engineering & Nano Science, Tongji University School of Medicine, Shanghai, China
| | - Quan Zhou
- Shanghai East Hospital, The Institute for Biomedical Engineering & Nano Science, Tongji University School of Medicine, Shanghai, China
| | - Yu Cheng
- Shanghai East Hospital, The Institute for Biomedical Engineering & Nano Science, Tongji University School of Medicine, Shanghai, China
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Lei J, Murphy WL, Temenoff JS. Combination of Heparin Binding Peptide and Heparin Cell Surface Coatings for Mesenchymal Stem Cell Spheroid Assembly. Bioconjug Chem 2018; 29:878-884. [PMID: 29341600 DOI: 10.1021/acs.bioconjchem.7b00757] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Microtissues containing multiple cell types have been used in both in vitro models and in vivo tissue repair applications. However, to improve throughput, there is a need to develop a platform that supports self-assembly of a large number of 3D microtissues containing multiple cell types in a dynamic suspension system. Thus, the objective of this study was to exploit the binding interaction between the negatively charged glycosaminoglycan, heparin, and a known heparin binding peptide to establish a method that promotes assembly of mesenchymal stem cell (MSC) spheroids into larger aggregates. We characterized heparin binding peptide (HEPpep) and heparin coatings on cell surfaces and determined the specificity of these coatings in promoting assembly of MSC spheroids in dynamic culture. Overall, combining spheroids with both coatings promoted up to 70 ± 11% of spheroids to assemble into multiaggregate structures, as compared to only 10 ± 4% assembly when cells having the heparin coating were cultured with cells coated with a scrambled peptide. These results suggest that this self-assembly method represents an exciting approach that may be applicable for a wide range of applications in which cell aggregation is desired.
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Affiliation(s)
| | - William L Murphy
- Department of Biomedical Engineering , University of Wisconsin-Madison , Madison , Wisconsin 53706 , United States.,Department of Orthopedics and Rehabilitation , University of Wisconsin-Madison , Madison , Wisconsin 53705 , United States
| | - Johnna S Temenoff
- Coulter Department of Biomedical Engineering , Georgia Tech/Emory University , Atlanta , Georgia 30332 , United States
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Sardella E, Salama RA, Waly GH, Habib AN, Favia P, Gristina R. Improving Internal Cell Colonization of Porous Scaffolds with Chemical Gradients Produced by Plasma Assisted Approaches. ACS APPLIED MATERIALS & INTERFACES 2017; 9:4966-4975. [PMID: 28094986 DOI: 10.1021/acsami.6b14170] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Cell colonization of the surrounding environment is a very significant process in both physiological and pathological events. In order to understand the tissue regeneration process and thereby provide guidance principles for designing new biomaterials, it is of paramount importance to study the cell colonization in the presence of physical, chemical, and biological cues. Flat "gradient" materials are generally used with this purpose. Three dimensional gradient scaffolds mimicking more precisely the situation in vivo are somewhat more complex to fabricate and characterize. Scaffolds for Tissue Engineering (TE) made of hydrophobic synthetic polymers do not allow good cell colonization: far from their periphery, in fact, internal cell colonization is usually low. In this research poly-ε caprolactone (PCL) scaffolds have been "decorated" with chemical gradients both on top and along their thickness by means of cold plasma processes, in order to improve cell colonization of their core. Plasma treatments with a mixture of argon and oxygen (Ar/O2), as well as plasma deposition of differently cross-linked poly(ethylene oxide) (PEO)-like coatings, have been performed. This study establishes that cross-linked PEO-like domains interspaced with native PCL ones deposited only on top of the scaffold (i.e., coating that penetrates less than 300 μm inside the scaffold) are more effective in promoting cell colonization across the scaffolds than the other tested materials including superhydrophilic samples and that ones produced by tested double step approaches. Last but not least, one result of this research is that, in the case of plasma coatings with low deposition rates and porous materials with a low pore interconnectivity, it is possible to improve penetration of low pressure plasma active species inside the scaffold's core thorough a pretreatment of the porous materials (i.e., penetration up to 4500 mm far from topside).
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Affiliation(s)
- Eloisa Sardella
- Institute of Nanotechnology-CNR (CNR Nanotec) , via Orabona 4, 70126 Bari, Italy
| | - Rania A Salama
- Biomaterials Department, Faculty of Oral and Dental Medicine, Cairo University , 12 Saraya AlManial Street, Kasr AlEiny, Cairo 11553, Egypt
| | - Gihan H Waly
- Biomaterials Department, Faculty of Oral and Dental Medicine, Cairo University , 12 Saraya AlManial Street, Kasr AlEiny, Cairo 11553, Egypt
| | - A Nour Habib
- Biomaterials Department, Faculty of Oral and Dental Medicine, Cairo University , 12 Saraya AlManial Street, Kasr AlEiny, Cairo 11553, Egypt
| | - Pietro Favia
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari "Aldo Moro" , via Orabona 4, 70124, Bari, Italy
| | - Roberto Gristina
- Institute of Nanotechnology-CNR (CNR Nanotec) , via Orabona 4, 70126 Bari, Italy
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Cellular Response to Surface Topography and Substrate Stiffness. STEM CELL BIOLOGY AND REGENERATIVE MEDICINE 2017. [DOI: 10.1007/978-3-319-51617-2_3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Bartold PM, Gronthos S, Ivanovski S, Fisher A, Hutmacher DW. Tissue engineered periodontal products. J Periodontal Res 2015; 51:1-15. [PMID: 25900048 DOI: 10.1111/jre.12275] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/03/2015] [Indexed: 01/25/2023]
Abstract
Attainment of periodontal regeneration is a significant clinical goal in the management of advanced periodontal defects arising from periodontitis. Over the past 30 years numerous techniques and materials have been introduced and evaluated clinically and have included guided tissue regeneration, bone grafting materials, growth and other biological factors and gene therapy. With the exception of gene therapy, all have undergone evaluation in humans. All of the products have shown efficacy in promoting periodontal regeneration in animal models but the results in humans remain variable and equivocal concerning attaining complete biological regeneration of damaged periodontal structures. In the early 2000s, the concept of tissue engineering was proposed as a new paradigm for periodontal regeneration based on molecular and cell biology. At this time, tissue engineering was a new and emerging field. Now, 14 years later we revisit the concept of tissue engineering for the periodontium and assess how far we have come, where we are currently situated and what needs to be done in the future to make this concept a reality. In this review, we cover some of the precursor products, which led to our current position in periodontal tissue engineering. The basic concepts of tissue engineering with special emphasis on periodontal tissue engineering products is discussed including the use of mesenchymal stem cells in bioscaffolds and the emerging field of cell sheet technology. Finally, we look into the future to consider what CAD/CAM technology and nanotechnology will have to offer.
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Affiliation(s)
- P M Bartold
- Colgate Australian Clinical Dental Research Centre, Dental School, University of Adelaide, Adelaide, SA, Australia
| | - S Gronthos
- School of Medical Sciences, University of Adelaide, Adelaide, SA, Australia
| | - S Ivanovski
- Griffith Health Institute, School of Dentistry and Oral Health, Griffith University, Gold Coast, Qld, Australia
| | - A Fisher
- Griffith Health Institute, School of Dentistry and Oral Health, Griffith University, Gold Coast, Qld, Australia
| | - D W Hutmacher
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Qld, Australia
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Lu C, Liu N, Gu X, Li B, Wang Y, Gao H, Ma J, Wu G. Synthesis and characterization of biocompatible zwitterionic sulfobetaine polypeptides and their resistance to protein adsorption. JOURNAL OF POLYMER RESEARCH 2014. [DOI: 10.1007/s10965-014-0578-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Liu T, Yang CT, Dieguez L, Denman JA, Thierry B. Robust and flexible fabrication of chemical micropatterns for tumor spheroid preparation. ACS APPLIED MATERIALS & INTERFACES 2014; 6:10162-10171. [PMID: 24893569 DOI: 10.1021/am501390v] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A robust and flexible approach is described for the straightforward preparation of multicellular tumor spheroids of controllable dimensions. The approach is based on a one-step plasma polymerization of the monomer allylamine carried out through conformal micropatterning physical masks that is used to deposit amine-rich (PolyAA) micrometer-scale features that promote cellular attachment and initiate the formation of multicellular spheroids. A simple backfilling step of the nonpolymerized poly(dimethylsiloxane) background with Pluronic F127 significantly reduced background cellular adhesion on the untreated substrate and, in turn, improved the quality of the spheroid formed. Tumor cells grown on the PolyAA/F127 patterned surfaces reliably formed multicellular spheroids within 24-48 h depending on the cell type. The dimension of the spheroids could be readily controlled by the dimension of the amine-rich micropatterns. This simple approach is compatible with the long-term culture of multicellular spheroids and their characterization with high-resolution optical microscopy. These features facilitate the development of on-chip assays, as demonstrated here for the study of the binding of transferrin-functionalized gold nanoparticles to multicellular tumor spheroids.
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Affiliation(s)
- Tianqing Liu
- Ian Wark Research Institute, University of South Australia , Mawson Lakes Campus, Mawson Lakes, Adelaide, South Australia 5095, Australia
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Krishnan GR, Yuan Y, Arzumand A, Sarkar D. Gelation characteristics and applications of poly(ethylene glycol) end capped with hydrophobic biodegradable dipeptides. ACTA ACUST UNITED AC 2014. [DOI: 10.1002/pola.27198] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- G. Rajesh Krishnan
- Department of Biomedical Engineering; University at Buffalo, State University of New York; Buffalo New York 14260
| | - Yuan Yuan
- Department of Biomedical Engineering; University at Buffalo, State University of New York; Buffalo New York 14260
| | - Ayesha Arzumand
- Department of Biomedical Engineering; University at Buffalo, State University of New York; Buffalo New York 14260
| | - Debanjan Sarkar
- Department of Biomedical Engineering; University at Buffalo, State University of New York; Buffalo New York 14260
- Department of Chemical and Biological Engineering; University at Buffalo, State University of New York; Buffalo New York 14260
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Highly robust protein production by co-culture of CHO spheroids layered on feeder cells in serum-free medium. Colloid Polym Sci 2014. [DOI: 10.1007/s00396-013-3093-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Chanphai P, Bekale L, Sanyakamdhorn S, Agudelo D, Tajmir-Riahi HA. Effect of synthetic polymers on polymer–protein interaction. POLYMER 2014. [DOI: 10.1016/j.polymer.2013.12.026] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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16
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Yamahira S, Takasaki Y, Yamaguchi S, Sumaru K, Kanamori T, Nagamune T. Dynamic photochemical lipid micropatterning for manipulation of nonadherent mammalian cells. Methods Cell Biol 2014; 120:131-44. [PMID: 24484661 DOI: 10.1016/b978-0-12-417136-7.00008-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Cell micropatterning methods with stimuli-responsive dynamic surfaces are getting a lot of attention in a wide variety of research fields, ranging from cell engineering to fundamental studies in cell biology. The surface of a slide coated with photo-cleavable poly(ethylene glycol) (PEG)-lipid can be used to spatiotemporally control cell immobilization and release by light irradiation. On the basis of this surface, it is easy to design simple methods for making a fine micropattern of any kind of cell. Furthermore, target cells can be selectively and rapidly released from this surface by light irradiation. In this review, we first describe how to obtain the photo-cleavable PEG-lipid from commercially available compounds through a facile four-step synthesis. Next, as a cell-patterning method, the protocols of coating substrates with the PEG-lipid, irradiating a pattern of light onto the coated substrate, and loading cells onto the irradiated surface are described. These protocols require no expensive equipment and potentially apply to any substrates that can adsorb serum albumin or chemically expose amine moieties on their surfaces. Finally, as an advanced method, cell release from the PEG-lipid surface in microfluidic devices is introduced. We also discuss the advantages and the possible applications of the present dynamic cell-patterning method.
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Affiliation(s)
- Shinya Yamahira
- Department of Bioengineering, The University of Tokyo, Tokyo, Japan
| | - Yumi Takasaki
- Department of Bioengineering, The University of Tokyo, Tokyo, Japan
| | - Satoshi Yamaguchi
- Department of Chemistry and Biotechnology, The University of Tokyo, Tokyo, Japan
| | - Kimio Sumaru
- Research Center for Stem Cell Engineering, National Institute of Advanced Industrial Science and Technology, Tsukuba, Japan
| | - Toshiyuki Kanamori
- Research Center for Stem Cell Engineering, National Institute of Advanced Industrial Science and Technology, Tsukuba, Japan
| | - Teruyuki Nagamune
- Department of Bioengineering, The University of Tokyo, Tokyo, Japan; Department of Chemistry and Biotechnology, The University of Tokyo, Tokyo, Japan
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Park IS, Rhie JW, Kim SH. A novel three-dimensional adipose-derived stem cell cluster for vascular regeneration in ischemic tissue. Cytotherapy 2013; 16:508-22. [PMID: 24210783 DOI: 10.1016/j.jcyt.2013.08.011] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2013] [Revised: 08/22/2013] [Accepted: 08/25/2013] [Indexed: 01/27/2023]
Abstract
BACKGROUND AIMS Stem cells are one of the most powerful tools in regeneration medicine. However, many limitations remain regarding the use of adult stem cells in clinical applications, including poor cell survival and low treatment efficiency. We describe an innovative three-dimensional cell mass (3DCM) culture that is based on cell adhesion (basic fibroblast growth factor-immobilized substrate) and assess the therapeutic potential of 3DCMs composed of human adipose tissue-derived stromal cells (hASCs). METHODS For formation of a 3DCM, hASCs were cultured on a substrate with immobilized fibroblast growth factor-2. The angiogenic potential of 3DCMs was determined by immunostaining, fluorescence-activated cell sorting and protein analysis. To evaluate the vasculature ability and improved treatment efficacy of 3DCMs, the 3DCMs were intramuscularly injected into the ischemic limbs of mice. RESULTS The 3DCMs released various angiogenic factors (eg, vascular endothelial growth factor and interleukin-8) and differentiated into vascular cells within 3 days in normal medium. Blood vessel and tissue regeneration was clearly observed through visual inspection in the 3DCM-injected group. hASC injection slowed limb necrosis after treatment, but 50% of the mice ultimately had limb loss within 28 days. Most mice receiving 3DCMs had limb salvage (89%) or mild limb necrosis (11%). CONCLUSIONS 3DCM culture promotes the efficient vascular differentiation of stem cells, and 3DCM transplantation results in the direct vascular regeneration of the injected cells and an improved therapeutic efficacy.
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Affiliation(s)
- In Su Park
- Center for Biomaterials, Biomedical Engineering Institute, Korea Institute of Science and Technology, Seoul, Republic of Korea
| | - Jong-Won Rhie
- Department of Plastic Surgery, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Sang-Heon Kim
- Center for Biomaterials, Biomedical Engineering Institute, Korea Institute of Science and Technology, Seoul, Republic of Korea.
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Zheng XT, Yu L, Li P, Dong H, Wang Y, Liu Y, Li CM. On-chip investigation of cell-drug interactions. Adv Drug Deliv Rev 2013; 65:1556-74. [PMID: 23428898 DOI: 10.1016/j.addr.2013.02.001] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2012] [Revised: 01/23/2013] [Accepted: 02/06/2013] [Indexed: 12/17/2022]
Abstract
Investigation of cell-drug interaction is of great importance in drug discovery but continues to pose significant challenges to develop robust, fast and high-throughput methods for pharmacologically profiling of potential drugs. Recently, cell chips have emerged as a promising technology for drug discovery/delivery, and their miniaturization and flow-through operation significantly reduce sample consumption while dramatically improving the throughput, reliability, resolution and sensitivity. Herein we review various types of miniaturized cell chips used in investigation of cell-drug interactions. The design and fabrication of cell chips including material selection, surface modification, cell trapping/patterning, concentration gradient generation and mimicking of in vivo environment are presented. Recent advances of on-chip investigations of cell-drug interactions, in particular the high-throughput screening, cell sorting, cytotoxicity testing, drug resistance analysis and pharmacological profiling are examined and discussed. It is expected that this survey can provide thoughtful basics and important applications of on-chip investigations of cell-drug interactions, thus greatly promoting research and development interests in this area.
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Polyglycerol coatings of glass vials for protein resistance. Eur J Pharm Biopharm 2013; 85:756-64. [DOI: 10.1016/j.ejpb.2013.04.005] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2012] [Revised: 04/08/2013] [Accepted: 04/15/2013] [Indexed: 12/23/2022]
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Ueda E, Levkin PA. Micropatterning hydrophobic liquid on a porous polymer surface for long-term selective cell-repellency. Adv Healthc Mater 2013; 2:1425-9. [PMID: 23712893 DOI: 10.1002/adhm.201300073] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2013] [Indexed: 11/08/2022]
Abstract
A simple method to form precise micropatterns of hydrophobic liquids using porous hydrophilic-hydrophobic substrates is presented. The micropatterns of hydrophobic liquid exhibit long-term stability, excellent cell-repellency, no cytotoxicity, and are more efficient than conventional PEG or superhydrophobic surfaces in controlling eukaryotic cell adhesion.
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Affiliation(s)
- Erica Ueda
- Institute of Toxicology and Genetics, Karlsruhe Institute of Technology, Postfach 3640, 76021 Karlsruhe, Germany
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Fraczek J, Bolleyn J, Vanhaecke T, Rogiers V, Vinken M. Primary hepatocyte cultures for pharmaco-toxicological studies: at the busy crossroad of various anti-dedifferentiation strategies. Arch Toxicol 2012; 87:577-610. [PMID: 23242478 DOI: 10.1007/s00204-012-0983-3] [Citation(s) in RCA: 88] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2012] [Accepted: 11/19/2012] [Indexed: 01/24/2023]
Abstract
Continuously increasing understanding of the molecular triggers responsible for the onset of diseases, paralleled by an equally dynamic evolution of chemical synthesis and screening methods, offers an abundance of pharmacological agents with a potential to become new successful drugs. However, before patients can benefit of newly developed pharmaceuticals, stringent safety filters need to be applied to weed out unfavourable drug candidates. Cost effectiveness and the need to identify compound liabilities, without exposing humans to unnecessary risks, has stimulated the shift of the safety studies to the earliest stages of drug discovery and development. In this regard, in vivo relevant organotypic in vitro models have high potential to revolutionize the preclinical safety testing. They can enable automation of the process, to match the requirements of high-throughput screening approaches, while satisfying ethical considerations. Cultures of primary hepatocytes became already an inherent part of the preclinical pharmaco-toxicological testing battery, yet their routine use, particularly for long-term assays, is limited by the progressive deterioration of liver-specific features. The availability of suitable hepatic and other organ-specific in vitro models is, however, of paramount importance in the light of changing European legal regulations in the field of chemical compounds of different origin, which gradually restrict the use of animal studies for safety assessment, as currently witnessed in cosmetic industry. Fortunately, research groups worldwide spare no effort to establish hepatic in vitro systems. In the present review, both classical and innovative methodologies to stabilize the in vivo-like hepatocyte phenotype in culture of primary hepatocytes are presented and discussed.
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Affiliation(s)
- J Fraczek
- Department of Toxicology, Faculty of Medicine and Pharmacy, Centre for Pharmaceutical Research, Vrije Universiteit Brussel, Belgium.
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Campuzano S, Kuralay F, Wang J. Ternary Monolayer Interfaces for Ultrasensitive and Direct Bioelectronic Detection of Nucleic Acids in Complex Matrices. ELECTROANAL 2011. [DOI: 10.1002/elan.201100452] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Staying alive: new perspectives on cell immobilization for biosensing purposes. Anal Bioanal Chem 2011; 402:1785-97. [PMID: 21922308 DOI: 10.1007/s00216-011-5364-x] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2011] [Revised: 08/10/2011] [Accepted: 08/24/2011] [Indexed: 01/09/2023]
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