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Kang C, Shrestha KL, Kwon S, Park S, Kim J, Kwon Y. Intein-Mediated Protein Engineering for Cell-Based Biosensors. BIOSENSORS 2022; 12:bios12050283. [PMID: 35624584 PMCID: PMC9138240 DOI: 10.3390/bios12050283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 04/20/2022] [Accepted: 04/26/2022] [Indexed: 11/21/2022]
Abstract
Cell-based sensors provide a flexible platform for screening biologically active targets and for monitoring their interactions in live cells. Their applicability extends across a vast array of biological research and clinical applications. Particularly, cell-based sensors are becoming a potent tool in drug discovery and cell-signaling studies by allowing function-based screening of targets in biologically relevant environments and enabling the in vivo visualization of cellular signals in real-time with an outstanding spatiotemporal resolution. In this review, we aim to provide a clear view of current cell-based sensor technologies, their limitations, and how the recent improvements were using intein-mediated protein engineering. We first discuss the characteristics of cell-based sensors and present several representative examples with a focus on their design strategies, which differentiate cell-based sensors from in vitro analytical biosensors. We then describe the application of intein-mediated protein engineering technology for cell-based sensor fabrication. Finally, we explain the characteristics of intein-mediated reactions and present examples of how the intein-mediated reactions are used to improve existing methods and develop new approaches in sensor cell fabrication to address the limitations of current technologies.
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Xie Z, Sun R, Qi C, Jiao S, Jiang Y, Liu Z, Zhao D, Liu R, Li Q, Yang K, Hu L, Wang X, Tang X, Ouyang H, Pang D. Generation of a pHSPA6 gene-based multifunctional live cell sensor. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2020; 1868:118919. [PMID: 33279608 DOI: 10.1016/j.bbamcr.2020.118919] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 11/22/2020] [Accepted: 11/26/2020] [Indexed: 02/07/2023]
Abstract
Biosensors utilizing intact live cells can report responses to certain stimuli rapidly and sensitively and have attracted a great deal of attention. The expression pattern of HSPA6, a little studied HSPA family member, has contributed to the development of multifunctional and intelligent whole-cell sensors. Herein, a new pHSPA6-based EGFP fluorescent reporter cell line was designed and developed via a CRISPR/Cas9-mediated knock-in strategy. The fluorescent reporter cell line has a precise EGFP integration site and gene copy number, and no selectable marker genes were introduced during the selection processes. Stimulation experiments with HSPA6-specific stressors indicated that EGFP fluorescent reporter cells could rapidly and effectively convert stress signals into EGFP fluorescent signals. Furthermore, cell proliferation and gene expression pattern analysis showed that the fluorescent reporter cells grew well and that both the integrated EGFP gene and the pHSPA6 gene were expressed rapidly and sensitively in response to stimulation. This study provides a new strategy for the construction of a cell model for HSPA6 expression/interaction and an intelligent live cell sensor, which can potentially be applied to numerous fields, such as those focusing on cellular models of HSPA6 signaling cascades, biomaterials, food security, environmental assessment, and drug screening.
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Affiliation(s)
- Zicong Xie
- Key Laboratory of Zoonosis Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, 130062 Changchun, Jilin Province, People's Republic of China
| | - Ruize Sun
- Key Laboratory of Zoonosis Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, 130062 Changchun, Jilin Province, People's Republic of China
| | - Chunyun Qi
- Key Laboratory of Zoonosis Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, 130062 Changchun, Jilin Province, People's Republic of China
| | - Shuyu Jiao
- Key Laboratory of Zoonosis Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, 130062 Changchun, Jilin Province, People's Republic of China
| | - Yuan Jiang
- Key Laboratory of Zoonosis Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, 130062 Changchun, Jilin Province, People's Republic of China
| | - Zhenying Liu
- Key Laboratory of Zoonosis Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, 130062 Changchun, Jilin Province, People's Republic of China
| | - Dehua Zhao
- Key Laboratory of Zoonosis Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, 130062 Changchun, Jilin Province, People's Republic of China
| | - Ruonan Liu
- Key Laboratory of Zoonosis Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, 130062 Changchun, Jilin Province, People's Republic of China
| | - Qirong Li
- Key Laboratory of Zoonosis Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, 130062 Changchun, Jilin Province, People's Republic of China
| | - Kang Yang
- Key Laboratory of Zoonosis Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, 130062 Changchun, Jilin Province, People's Republic of China
| | - Lanxin Hu
- Key Laboratory of Zoonosis Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, 130062 Changchun, Jilin Province, People's Republic of China
| | - Xinping Wang
- Key Laboratory of Zoonosis Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, 130062 Changchun, Jilin Province, People's Republic of China
| | - Xiaochun Tang
- Key Laboratory of Zoonosis Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, 130062 Changchun, Jilin Province, People's Republic of China
| | - Hongsheng Ouyang
- Key Laboratory of Zoonosis Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, 130062 Changchun, Jilin Province, People's Republic of China.
| | - Daxin Pang
- Key Laboratory of Zoonosis Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, 130062 Changchun, Jilin Province, People's Republic of China.
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Lu X, Ye Y, Zhang Y, Sun X. Current research progress of mammalian cell-based biosensors on the detection of foodborne pathogens and toxins. Crit Rev Food Sci Nutr 2020; 61:3819-3835. [PMID: 32885986 DOI: 10.1080/10408398.2020.1809341] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Foodborne diseases caused by pathogens and toxins are a serious threat to food safety and human health; thus, they are major concern to society. Existing conventional foodborne pathogen or toxin detection methods, including microbiological assay, nucleic acid-based assays, immunological assays, and instrumental analytical method, are time-consuming, labor-intensive and expensive. Because of the fast response and high sensitivity, cell-based biosensors are promising novel tools for food safety risk assessment and monitoring. This review focuses on the properties of mammalian cell-based biosensors and applications in the detection of foodborne pathogens (bacteria and viruses) and toxins (bacterial toxins, mycotoxins and marine toxins). We discuss mammalian cell adhesion and how it is involved in the establishment of 3D cell culture models for mammalian cell-based biosensors, as well as evaluate their limitations for commercialization and further development prospects.
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Affiliation(s)
- Xin Lu
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, National Engineering Research Center for Functional Food, Synergetic Innovation Center of Food Safety and Nutrition, Jiangnan University, Wuxi, Jiangsu, PR China
| | - Yongli Ye
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, National Engineering Research Center for Functional Food, Synergetic Innovation Center of Food Safety and Nutrition, Jiangnan University, Wuxi, Jiangsu, PR China
| | - Yinzhi Zhang
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, National Engineering Research Center for Functional Food, Synergetic Innovation Center of Food Safety and Nutrition, Jiangnan University, Wuxi, Jiangsu, PR China
| | - Xiulan Sun
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, National Engineering Research Center for Functional Food, Synergetic Innovation Center of Food Safety and Nutrition, Jiangnan University, Wuxi, Jiangsu, PR China
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Ge Q, Ge P, Jiang D, Du N, Chen J, Yuan L, Yu H, Xu X, Wu M, Zhang W, Zhou G. A novel and simple cell-based electrochemical biosensor for evaluating the antioxidant capacity of Lactobacillus plantarum strains isolated from Chinese dry-cured ham. Biosens Bioelectron 2017; 99:555-563. [PMID: 28825999 DOI: 10.1016/j.bios.2017.08.037] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Revised: 08/11/2017] [Accepted: 08/14/2017] [Indexed: 02/07/2023]
Abstract
The analysis of antioxidants in foodstuffs has become an active area of research, leading to the recent development of numerous methods for assessing antioxidant capacity. Here we described the fabrication and validation of a novel and simple cell-based electrochemical biosensor for this purpose. The biosensor is used to assess the antioxidant capacity of cell-free extracts from Lactobacillus plantarum strains isolated from Chinese dry-cured ham. The biosensor relies on the determination of cellular reactive oxygen species (ROS) (the flux of H2O2 released from RAW 264.7 macrophage cells) to indirectly assess changes in intracellular oxidative stress level as influenced by L. plantarum strains. A one-step acidified manganese dioxide (a-MnO2) modified gold electrode (GE) was used to immobilize RAW 264.7 macrophage cells, which were then encapsulated in a 3D cell culture system consisting of alginate/ graphene oxide (NaAlg/GO). The biosensor exhibited a rapid and sensitive response for the detection of H2O2 released from RAW264.7 cells. The detection limit was 0.02μM with a linear response from 0.05μM to 0.85μM and the biosensor was shown to have good stability and outstanding repeatability. This technique was then used for evaluating the antioxidant ability of extracts from L. plantarum NJAU-01. According to the electrochemical investigations and assays of SEM, TEM, and ROS, these cell-free extracts effectively reduced the oxidative stress levels in RAW264.7 cells under external stimulation. Extracts from L. plantarum strains at a dose of 1010CFU/mL showed the highest antioxidant activities with a relative antioxidant capacity (RAC) rate of 88.94%. Hence, this work provides a simple and efficient electrochemical biosensing platform based on RAW264.7 cells for fast, sensitive and quantitative assessment of antioxidant capacity of L. plantarum strains. The method demonstrates its potential for rapid screening for evaluating antioxidant properties of samples.
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Affiliation(s)
- Qingfeng Ge
- Key Laboratory of Meat Processing and Quality Control, MOE, Key Laboratory of Meat Processing, MOA, Jiangsu Synergetic Innovation Center of Meat Processing and Quality Control, College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, PR China; School of Food Science and Technology, Yangzhou University, Industrial Engineering Center for Huaiyang Cuisin of Jiangsu Province, Yangzhou, Jiangsu 225127, PR China
| | - Panwei Ge
- School of Food Science and Technology, Yangzhou University, Industrial Engineering Center for Huaiyang Cuisin of Jiangsu Province, Yangzhou, Jiangsu 225127, PR China
| | - Donglei Jiang
- School of Food Science and Technology, Yangzhou University, Industrial Engineering Center for Huaiyang Cuisin of Jiangsu Province, Yangzhou, Jiangsu 225127, PR China; Jiangsu key Laboratory of Zoonoses, Yangzhou, Jiangsu 225009, China
| | - Nan Du
- School of Food Science and Technology, Yangzhou University, Industrial Engineering Center for Huaiyang Cuisin of Jiangsu Province, Yangzhou, Jiangsu 225127, PR China
| | - Jiahui Chen
- School of Food Science and Technology, Yangzhou University, Industrial Engineering Center for Huaiyang Cuisin of Jiangsu Province, Yangzhou, Jiangsu 225127, PR China
| | - Limin Yuan
- Testing Center, Yangzhou University, Yangzhou, Jiangsu 225009, China
| | - Hai Yu
- School of Food Science and Technology, Yangzhou University, Industrial Engineering Center for Huaiyang Cuisin of Jiangsu Province, Yangzhou, Jiangsu 225127, PR China
| | - Xin Xu
- School of Food Science and Technology, Yangzhou University, Industrial Engineering Center for Huaiyang Cuisin of Jiangsu Province, Yangzhou, Jiangsu 225127, PR China
| | - Mangang Wu
- School of Food Science and Technology, Yangzhou University, Industrial Engineering Center for Huaiyang Cuisin of Jiangsu Province, Yangzhou, Jiangsu 225127, PR China
| | - Wangang Zhang
- Key Laboratory of Meat Processing and Quality Control, MOE, Key Laboratory of Meat Processing, MOA, Jiangsu Synergetic Innovation Center of Meat Processing and Quality Control, College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, PR China.
| | - Guanghong Zhou
- Key Laboratory of Meat Processing and Quality Control, MOE, Key Laboratory of Meat Processing, MOA, Jiangsu Synergetic Innovation Center of Meat Processing and Quality Control, College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, PR China
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Dubiak-Szepietowska M, Karczmarczyk A, Winckler T, Feller KH. A cell-based biosensor for nanomaterials cytotoxicity assessment in three dimensional cell culture. Toxicology 2016; 370:60-69. [PMID: 27693313 DOI: 10.1016/j.tox.2016.09.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Revised: 09/22/2016] [Accepted: 09/26/2016] [Indexed: 12/17/2022]
Abstract
Nanoparticles (NPs) are widely used in consumer and medicinal products. The high prevalence of nanoparticles in the environment raises concerns regarding their effects on human health, but there is limited knowledge about how NPs interact with cells or tissues. Because the European Union has called for a substantial reduction of animal experiments for scientific purposes (Directive 2010/63), increased efforts are required to develop in vitro models to evaluate potentially hazardous agents. Here, we describe a new cell-based biosensor for the evaluation of NPs cytotoxicity. The new biosensor is based on transgenic human hepatoblastoma cells (HepG2) that express a secreted form of alkaline phosphatase (SEAP) as a reporter protein whose expression is induced upon activation of a stress response pathway controlled by the transcription regulator nuclear factor-κB (NF-κB). The NF-κB_HepG2 sensor cells were cultured in a Matrigel-based three dimensional environment to simulate the in vivo situation. The new biosensor cells offer the advantage of generating fast and reproducible readout at lower concentrations and shorter incubation time than conventional viability assays, avoid possible interaction between nanomaterials and assay compounds, therefore, minimize generation of false positive or negative results and indicate mechanism of toxicity through NF-κB signaling.
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Affiliation(s)
- Monika Dubiak-Szepietowska
- Department of Medical Engineering and Biotechnology, Ernst-Abbe-University of Applied Sciences Jena, Carl-Zeiss Promenade 2, 07745 Jena, Germany.
| | - Aleksandra Karczmarczyk
- Department of Medical Engineering and Biotechnology, Ernst-Abbe-University of Applied Sciences Jena, Carl-Zeiss Promenade 2, 07745 Jena, Germany
| | - Thomas Winckler
- Institute of Pharmacy, Friedrich Schiller University Jena, Semmelweissstrasse 10, 07743 Jena, Germany
| | - Karl-Heinz Feller
- Department of Medical Engineering and Biotechnology, Ernst-Abbe-University of Applied Sciences Jena, Carl-Zeiss Promenade 2, 07745 Jena, Germany
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Miller F, Hinze U, Chichkov B, Leibold W, Lenarz T, Paasche G. Validation of eGFP fluorescence intensity for testing in vitro cytotoxicity according to ISO 10993-5. J Biomed Mater Res B Appl Biomater 2015; 105:715-722. [PMID: 26699416 DOI: 10.1002/jbm.b.33602] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Revised: 11/18/2015] [Accepted: 12/03/2015] [Indexed: 11/09/2022]
Abstract
ISO 10993-5 provides one of the accepted standards for testing the biotoxicity of new materials. All of the recommended test procedures rely upon the uptake or metabolism of dye by living cells. Results of direct contact tests can be potentially compromised by interaction or adsorption of the dye or its metabolic products. Therefore, the aim of the current study was to validate the use of the eGFP signal of transfected NIH-3T3 fibroblasts with the results of the MTT test in order to provide a test procedure that is very close to the ISO 10993-5 but has the advantage of not relying on the addition of dye. Our tests show that the MTT assay detects cytotoxicity in the eGFP NIH-3T3 cells at least as well as in the L929 cells. To facilitate the validation, we chose to integrate the fluorescence measurements into the MTT test procedure. To that end, an additional washing step was introduced. Additionally, medium without phenol red was used, resulting in a very high correlation of both measurements. Without these modifications, the fluorescence test was comparable to the MTT test in its ability to detect the cytotoxic potential of substances; however, it did result in slightly elevated IC50 concentrations. As the results of both tests correlated highly, measurement of the eGFP signal appears to present a reliable tool for detecting cytotoxicity of materials in line with the ISO 10993-5 norm with the advantage of avoiding the addition of dyes and the subsequent potential interaction with test materials. © 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 105B: 715-722, 2017.
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Affiliation(s)
- Felicitas Miller
- Department of Otolaryngology, Hannover Medical School, C.-Neuberg-Str. 1, 30625, Hannover, Germany
| | - Ulf Hinze
- Laser Zentrum Hannover e.V, Hollerithallee 8, 30419, Hannover, Germany
| | - Boris Chichkov
- Laser Zentrum Hannover e.V, Hollerithallee 8, 30419, Hannover, Germany
| | - Wolfgang Leibold
- Department of Immunology, University of Veterinary Medicine Hannover, Bischofsholer Damm 17, 30173, Hannover, Germany
| | - Thomas Lenarz
- Department of Otolaryngology, Hannover Medical School, C.-Neuberg-Str. 1, 30625, Hannover, Germany.,Hearing4all Cluster of Excellence, Hannover Medical School, F.-Lynen-Str. 35, 30625, Hannover, Germany
| | - Gerrit Paasche
- Department of Otolaryngology, Hannover Medical School, C.-Neuberg-Str. 1, 30625, Hannover, Germany.,Hearing4all Cluster of Excellence, Hannover Medical School, F.-Lynen-Str. 35, 30625, Hannover, Germany
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7
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Abstract
The slime mold Physarum polycephalum is a huge single cell that has proved to be a fruitful material for designing novel computing architectures. The slime mold is capable of sensing tactile, chemical, and optical stimuli and converting them to characteristic patterns of its electrical potential oscillations. The electrical responses to stimuli may propagate along protoplasmic tubes for distances exceeding tens of centimeters, as impulses in neural pathways do. A slime mold makes decisions about its propagation direction based on information fusion from thousands of spatially extended protoplasmic loci, similarly to a neuron collecting information from its dendritic tree. The analogy is distant yet inspiring. We speculate on whether alternative-would-be-nervous systems can be developed and practically implemented from the slime mold. We uncover analogies between the slime mold and neurons, and demonstrate that the slime mold can play the roles of primitive mechanoreceptors, photoreceptors, and chemoreceptors; we also show how the Physarum neural pathways develop. The results constituted the first step towards experimental laboratory studies of nervous system implementation in slime molds.
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Ito A, Okamoto N, Yamaguchi M, Kawabe Y, Kamihira M. Heat-inducible transgene expression with transcriptional amplification mediated by a transactivator. Int J Hyperthermia 2013; 28:788-98. [PMID: 23153220 DOI: 10.3109/02656736.2012.738847] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
PURPOSE Control of therapeutic gene expression in tumours is a major goal of gene therapy research, as it can restrict cytotoxic gene expression in cancer cells. In addition, the combination of hyperthermia with gene therapy through the application of heat-inducible vectors can result in considerable improvements in therapeutic efficiency. In this study, to combine heat-inducibility with high-level transgene expression, we developed a heat-inducible transgene expression system with transcriptional amplification mediated by a tetracycline-responsive transactivator. MATERIALS AND METHODS A hybrid promoter was generated by placing the heat shock protein (HSP) 70B' promoter under the tetracycline-repressor responsive element sequence, and a reporter/therapeutic gene expression plasmid was constructed by placing a reporter/therapeutic gene under the control of this hybrid promoter. RESULTS When the transactivator expression plasmid harbouring an expression cassette of the tetracycline-responsive transactivator gene was co-transfected with a reporter gene expression plasmid, the reporter gene expression was controlled by heat treatment. With this system, high levels of heat-induced transgene expression were observed compared to that from the HSP promoter alone without the transactivator. Evaluation of in vitro therapeutic effects using cancer cell lines revealed that therapeutic gene expression effectively caused cell death in a greater percentage of the cells. CONCLUSION These findings indicate that this strategy improves the efficacy of cancer gene therapy.
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Affiliation(s)
- Akira Ito
- Faculty of Engineering, Department of Chemical Engineering, Kyushu University, Fukuoka, Japan
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Garcia SN, Gutierrez L, McNulty A. Real-time cellular analysis as a novel approach for in vitro cytotoxicity testing of medical device extracts. J Biomed Mater Res A 2013; 101:2097-106. [PMID: 23412941 DOI: 10.1002/jbm.a.34507] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2012] [Revised: 09/09/2012] [Accepted: 10/16/2012] [Indexed: 11/05/2022]
Abstract
Cytotoxicity measurements are often performed to evaluate the biocompatibility of medical device materials. Here, we describe the use of a real-time cell analyzer (RTCA) system for the investigation of biocompatibility of medical devices by comparing RTCA results to two distinct methods described in the International Organization for Standardization (ISO) guidelines. Mouse L-929 fibroblast proliferation was assessed every 15 min from 24 to 100 h during the pretreatment and postextract addition period. Simultaneously, we performed quantitative cytotoxicity analyses using water-soluble tetrazolium salt (WST-1) and qualitatively scored cytotoxicity by examining changes in morphology at 24-h intervals. The RTCA uses electrical impedance to measure cell viability quantified as a normalized cellular index (CI) which was converted in this study to a reactivity grade. Results from microscopic analyses were expressed as a reactivity grade, based on morphology as defined by the ISO 10993-5:2009. There was a clear correlation between addition of cytotoxic agents and, both, decreased normalized CI and concomitant cell layer destruction observed by microscopy. Results obtained from the colorimetric WST-1 assays also correlated with normalized CI at various time points tested. The results indicate that RTCA allows for automated and accurate assessment of biocompatibility of medical devices and biomaterials.
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Affiliation(s)
- Sandra N Garcia
- Applied Sciences, Kinetic Concepts, Inc., San Antonio, Texas, USA.
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Chen P, Kanehira K, Taniguchi A. Role of toll-like receptors 3, 4 and 7 in cellular uptake and response to titanium dioxide nanoparticles. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2013; 14:015008. [PMID: 27877566 PMCID: PMC5090584 DOI: 10.1088/1468-6996/14/1/015008] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/11/2012] [Accepted: 01/24/2013] [Indexed: 06/06/2023]
Abstract
Innate immune response is believed to be among the earliest provisional cellular responses, and mediates the interactions between microbes and cells. Toll-like receptors (TLRs) are critical to these interactions. We hypothesize that TLRs also play an important role in interactions between nanoparticles (NPs) and cells, although little information has been reported concerning such an interaction. In this study, we investigated the role of TLR3, TLR4 and TLR7 in cellular uptake of titanium dioxide NP (TiO2 NP) agglomerates and the resulting inflammatory responses to these NPs. Our data indicate that TLR4 is involved in the uptake of TiO2 NPs and promotes the associated inflammatory responses. The data also suggest that TLR3, which has a subcellular location distinct from that of TLR4, inhibits the denaturation of cellular protein caused by TiO2 NPs. In contrast, the unique cellular localization of TLR7 has middle-ground functional roles in cellular response after TiO2 NP exposure. These findings are important for understanding the molecular interaction mechanisms between NPs and cells.
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Affiliation(s)
- Peng Chen
- Cell-Materials Interaction Group, Biomaterials Unit, Nano-Bio Field, International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1, Namiki, Tsukuba, Ibaraki 305-0044, Japan
- Graduate School of Advanced Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan
| | - Koki Kanehira
- Biotechnology Group, TOTO Ltd Research Institute, Honson 2-8-1, Chigasaki, Kanagawa 253-8577, Japan
| | - Akiyoshi Taniguchi
- Cell-Materials Interaction Group, Biomaterials Unit, Nano-Bio Field, International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1, Namiki, Tsukuba, Ibaraki 305-0044, Japan
- Graduate School of Advanced Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan
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Synthetic and bio-artificial tactile sensing: a review. SENSORS 2013; 13:1435-66. [PMID: 23348032 PMCID: PMC3649411 DOI: 10.3390/s130201435] [Citation(s) in RCA: 109] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2012] [Revised: 12/31/2012] [Accepted: 01/11/2013] [Indexed: 01/09/2023]
Abstract
This paper reviews the state of the art of artificial tactile sensing, with a particular focus on bio-hybrid and fully-biological approaches. To this aim, the study of physiology of the human sense of touch and of the coding mechanisms of tactile information is a significant starting point, which is briefly explored in this review. Then, the progress towards the development of an artificial sense of touch are investigated. Artificial tactile sensing is analysed with respect to the possible approaches to fabricate the outer interface layer: synthetic skin versus bio-artificial skin. With particular respect to the synthetic skin approach, a brief overview is provided on various technologies and transduction principles that can be integrated beneath the skin layer. Then, the main focus moves to approaches characterized by the use of bio-artificial skin as an outer layer of the artificial sensory system. Within this design solution for the skin, bio-hybrid and fully-biological tactile sensing systems are thoroughly presented: while significant results have been reported for the development of tissue engineered skins, the development of mechanotransduction units and their integration is a recent trend that is still lagging behind, therefore requiring research efforts and investments. In the last part of the paper, application domains and perspectives of the reviewed tactile sensing technologies are discussed.
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12
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Choi M, Choi JW, Kim S, Nizamoglu S, Hahn SK, Yun SH. Light-guiding hydrogels for cell-based sensing and optogenetic synthesis in vivo. NATURE PHOTONICS 2013; 7:987-994. [PMID: 25346777 PMCID: PMC4207089 DOI: 10.1038/nphoton.2013.278] [Citation(s) in RCA: 180] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Polymer hydrogels are widely used as cell scaffolds for biomedical applications. While the biochemical and biophysical properties of hydrogels have been extensively investigated, little attention has been paid to their potential photonic functionalities. Here, we report cell-integrated polyethylene glycol-based hydrogels for in-vivo optical sensing and therapy applications. Hydrogel patches containing cells were implanted in awake, freely moving mice for several days and shown to offer long-term transparency, biocompatibility, cell-viability, and light-guiding properties (loss: <1 dB/cm). Using optogenetic, glucagon-like peptide-1 (GLP-1) secreting cells, we conducted light-controlled therapy using the hydrogel in a mouse model with type-2 diabetes and attained improved glucose homeostasis. Furthermore, real-time optical readout of encapsulated heat-shock-protein-coupled fluorescent reporter cells made it possible to measure the nanotoxicity of cadmium-based bare and shelled quantum dots (CdTe; CdSe/ZnS) in vivo.
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Affiliation(s)
- Myunghwan Choi
- Harvard Medical School and Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, Massachusetts, USA
- WCU Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology, Daejeon, Korea
| | - Jin Woo Choi
- Harvard Medical School and Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, Massachusetts, USA
- Wonkwang Institute of Interfused Biomedical Science, Department of Pharmacology, School of Dentistry, Wonkwang University, Seoul, Korea
| | - Seonghoon Kim
- WCU Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology, Daejeon, Korea
| | - Sedat Nizamoglu
- Harvard Medical School and Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Sei Kwang Hahn
- Harvard Medical School and Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, Massachusetts, USA
- Department of Materials Science and Engineering, Pohang University of Science and Technology, Pohang, Korea
| | - Seok Hyun Yun
- Harvard Medical School and Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, Massachusetts, USA
- WCU Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology, Daejeon, Korea
- Corresponding Author: S. H. Andy Yun, Ph.D., Associate Professor, Harvard University, 65 Landsdowne St. UP-525, Cambridge, MA 02139, USA, Tel: 1-617-768-8704,
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Chen P, Kanehira K, Sonezaki S, Taniguchi A. Detection of cellular response to titanium dioxide nanoparticle agglomerates by sensor cells using heat shock protein promoter. Biotechnol Bioeng 2012; 109:3112-8. [PMID: 22729720 DOI: 10.1002/bit.24583] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2012] [Revised: 05/22/2012] [Accepted: 06/12/2012] [Indexed: 01/25/2023]
Abstract
Nanotechnology is becoming increasingly important for products used in our daily lives, such as the masses of titanium dioxide nanoparticle agglomerates (TiO(2) NPs) used in the pharmaceutical industry, for cosmetic products, or for pigments. Meanwhile, a serious lack of detailed information concerning the interaction between the nanomaterials and cells limits their biological and medical applications. Sensing technology is very important for understanding these interactions. We have shown that TiO(2) NPs induce heat shock protein 70B' (HSP70B') mRNA [Okuda-Shimazaki et al., 2010. Int J Mol Sci 11:2383-2392]. In the current work, sensor cells for detection of cellular responses to NPs were prepared by transfecting an HSP70B' promoter-reporter plasmid. First, to find suitable cells for detection, five different mammalian cell lines were chosen as potential sensor cells. The results showed TiO(2) NP response in some cell lines, although different sensor cells had different TiO(2) NP response levels, as heat shock response ability is important for the detection. Then, we studied the TiO(2) NP time-course response and dose response. The results indicated that our sensor cells can detect TiO(2) NP cellular responses. Our work should aid in understanding the interactions between bio-nanomaterials and cells.
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Affiliation(s)
- Peng Chen
- Cell-Materials Interaction Group, Biomaterials Unit, Nano-Bio Field, International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1, Namiki, Tsukuba, Ibaraki 305-0044, Japan
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14
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Arbitrary, complex cell patterning via inkjet printing of a cell membrane-anchoring polymer. Macromol Res 2012. [DOI: 10.1007/s13233-012-0068-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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15
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Chen P, Migita S, Kanehira K, Sonezaki S, Taniguchi A. Development of sensor cells using NF-κB pathway activation for detection of nanoparticle-induced inflammation. SENSORS (BASEL, SWITZERLAND) 2011; 11:7219-30. [PMID: 22164013 PMCID: PMC3231678 DOI: 10.3390/s110707219] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/10/2011] [Revised: 07/08/2011] [Accepted: 07/12/2011] [Indexed: 02/06/2023]
Abstract
The increasing use of nanomaterials in consumer and industrial products has aroused concerns regarding their fate in biological systems. An effective detection method to evaluate the safety of bio-nanomaterials is therefore very important. Titanium dioxide (TiO(2)), which is manufactured worldwide in large quantities for use in a wide range of applications, including pigment and cosmetic manufacturing, was once thought to be an inert material, but recently, more and more studies have indicated that TiO(2) nanoparticles (TiO(2) NPs) can cause inflammation and be harmful to humans by causing lung and brain problems. In order to evaluate the safety of TiO(2) NPs for the environment and for humans, sensor cells for inflammation detection were developed, and these were transfected with the Toll-like receptor 4 (TLR4) gene and Nuclear Factor Kappa B (NF-κB) reporter gene. NF-κB as a primary cause of inflammation has received a lot of attention, and it can be activated by a wide variety of external stimuli. Our data show that TiO(2) NPs-induced inflammation can be detected by our sensor cells through NF-κB pathway activation. This may lead to our sensor cells being used for bio-nanomaterial safety evaluation.
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Affiliation(s)
- Peng Chen
- Cell-Materials Interaction Group, Biomaterials Unit, Nano-Bio Field, National Institute for Materials Science, 1-1, Namiki, Tsukuba, Ibaraki, 305-0044, Japan; E-Mails: (P.C.); (S.M.)
- Graduate School of Advanced Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan
| | - Satoshi Migita
- Cell-Materials Interaction Group, Biomaterials Unit, Nano-Bio Field, National Institute for Materials Science, 1-1, Namiki, Tsukuba, Ibaraki, 305-0044, Japan; E-Mails: (P.C.); (S.M.)
| | - Koki Kanehira
- TOTO Ltd. Research Institute, Nakashima 2-1-1, Kokurakita, Kitakyushu, 802-8601, Japan; E-Mails: (K.K.); (S.S.)
| | - Shuji Sonezaki
- TOTO Ltd. Research Institute, Nakashima 2-1-1, Kokurakita, Kitakyushu, 802-8601, Japan; E-Mails: (K.K.); (S.S.)
| | - Akiyoshi Taniguchi
- Cell-Materials Interaction Group, Biomaterials Unit, Nano-Bio Field, National Institute for Materials Science, 1-1, Namiki, Tsukuba, Ibaraki, 305-0044, Japan; E-Mails: (P.C.); (S.M.)
- Graduate School of Advanced Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan
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