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Daniel J, Schönberger Alvarez AA, te Heesen P, Lehrheuer B, Pischinger S, Hollert H, Roß-Nickoll M, Du M. Air-liquid interface exposure of A549 human lung cells to characterize the hazard potential of a gaseous bio-hybrid fuel blend. PLoS One 2024; 19:e0300772. [PMID: 38913629 PMCID: PMC11195957 DOI: 10.1371/journal.pone.0300772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Accepted: 06/06/2024] [Indexed: 06/26/2024] Open
Abstract
Gaseous and semi-volatile organic compounds emitted by the transport sector contribute to air pollution and have adverse effects on human health. To reduce harmful effects to the environment as well as to humans, renewable and sustainable bio-hybrid fuels are explored and investigated in the cluster of excellence "The Fuel Science Center" at RWTH Aachen University. However, data on the effects of bio-hybrid fuels on human health is scarce, leaving a data gap regarding their hazard potential. To help close this data gap, this study investigates potential toxic effects of a Ketone-Ester-Alcohol-Alkane (KEAA) fuel blend on A549 human lung cells. Experiments were performed using a commercially available air-liquid interface exposure system which was optimized beforehand. Then, cells were exposed at the air-liquid interface to 50-2000 ppm C3.7 of gaseous KEAA for 1 h. After a 24 h recovery period in the incubator, cells treated with 500 ppm C3.7 KEAA showed significant lower metabolic activity and cells treated with 50, 250, 500 and 1000 ppm C3.7 KEAA showed significant higher cytotoxicity compared to controls. Our data support the international occupational exposure limits of the single KEAA constituents. This finding applies only to the exposure scenario tested in this study and is difficult to extrapolate to the complex in vivo situation.
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Affiliation(s)
- Jonas Daniel
- Institute for Environmental Research, RWTH Aachen University, Aachen, Germany
| | | | - Pia te Heesen
- Institute for Environmental Research, RWTH Aachen University, Aachen, Germany
| | - Bastian Lehrheuer
- TME—Chair of Thermodynamics of Mobile Energy Conversion Systems, RWTH Aachen University, Aachen, Germany
| | - Stefan Pischinger
- TME—Chair of Thermodynamics of Mobile Energy Conversion Systems, RWTH Aachen University, Aachen, Germany
| | - Henner Hollert
- Department Evolutionary Ecology & Environmental Toxicology (E3T), Faculty Biological Sciences (FB15), Goethe University Frankfurt, Frankfurt, Germany
- Department Environmental Media Related Ecotoxicology, Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Schmallenberg, Germany
| | - Martina Roß-Nickoll
- Institute for Environmental Research, RWTH Aachen University, Aachen, Germany
| | - Miaomiao Du
- Institute for Environmental Research, RWTH Aachen University, Aachen, Germany
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2
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Jaber N, Billet S. How to use an in vitro approach to characterize the toxicity of airborne compounds. Toxicol In Vitro 2024; 94:105718. [PMID: 37871865 DOI: 10.1016/j.tiv.2023.105718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 09/13/2023] [Accepted: 09/21/2023] [Indexed: 10/25/2023]
Abstract
As part of the development of new approach methodologies (NAMs), numerous in vitro methods are being developed to characterize the potential toxicity of inhalable xenobiotics (gases, volatile organic compounds, polycyclic aromatic hydrocarbons, particulate matter, nanoparticles). However, the materials and methods employed are extremely diverse, and no single method is currently in use. Method standardization and validation would raise trust in the results and enable them to be compared. This four-part review lists and compares biological models and exposure methodologies before describing measurable biomarkers of exposure or effect. The first section emphasizes the importance of developing alternative methods to reduce, if not replace, animal testing (3R principle). The biological models presented are mostly to cultures of epithelial cells from the respiratory system, as the lungs are the first organ to come into contact with air pollutants. Monocultures or cocultures of primary cells or cell lines, as well as 3D organotypic cultures such as organoids, spheroids and reconstituted tissues, but also the organ(s) model on a chip are examples. The exposure methods for these biological models applicable to airborne compounds are submerged, intermittent, continuous either static or dynamic. Finally, within the restrictions of these models (i.e. relative tiny quantities, adhering cells), the mechanisms of toxicity and the phenotypic markers most commonly examined in models exposed at the air-liquid interface (ALI) are outlined.
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Affiliation(s)
- Nour Jaber
- UR4492, Unité de Chimie Environnementale et Interactions sur le Vivant, Université du Littoral Côte d'Opale, Dunkerque, France
| | - Sylvain Billet
- UR4492, Unité de Chimie Environnementale et Interactions sur le Vivant, Université du Littoral Côte d'Opale, Dunkerque, France.
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3
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Ahmed TA, Eldaly B, Eldosuky S, Elkhenany H, El-Derby AM, Elshazly MF, El-Badri N. The interplay of cells, polymers, and vascularization in three-dimensional lung models and their applications in COVID-19 research and therapy. Stem Cell Res Ther 2023; 14:114. [PMID: 37118810 PMCID: PMC10144893 DOI: 10.1186/s13287-023-03341-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Accepted: 04/14/2023] [Indexed: 04/30/2023] Open
Abstract
Millions of people have been affected ever since the emergence of the corona virus disease of 2019 (COVID-19) outbreak, leading to an urgent need for antiviral drug and vaccine development. Current experimentation on traditional two-dimensional culture (2D) fails to accurately mimic the in vivo microenvironment for the disease, while in vivo animal model testing does not faithfully replicate human COVID-19 infection. Human-based three-dimensional (3D) cell culture models such as spheroids, organoids, and organ-on-a-chip present a promising solution to these challenges. In this report, we review the recent 3D in vitro lung models used in COVID-19 infection and drug screening studies and highlight the most common types of natural and synthetic polymers used to generate 3D lung models.
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Affiliation(s)
- Toka A Ahmed
- Center of Excellence for Stem Cells and Regenerative Medicine (CESC), Zewail City of Science and Technology, October Gardens, 6th of October City, Giza, 12582, Egypt
- Egypt Center for Research and Regenerative Medicine (ECRRM), Cairo, Egypt
| | - Bassant Eldaly
- Center of Excellence for Stem Cells and Regenerative Medicine (CESC), Zewail City of Science and Technology, October Gardens, 6th of October City, Giza, 12582, Egypt
| | - Shadwa Eldosuky
- Center of Excellence for Stem Cells and Regenerative Medicine (CESC), Zewail City of Science and Technology, October Gardens, 6th of October City, Giza, 12582, Egypt
| | - Hoda Elkhenany
- Department of Surgery, Faculty of Veterinary Medicine, Alexandria University, Alexandria, 22785, Egypt
| | - Azza M El-Derby
- Center of Excellence for Stem Cells and Regenerative Medicine (CESC), Zewail City of Science and Technology, October Gardens, 6th of October City, Giza, 12582, Egypt
| | - Muhamed F Elshazly
- Center of Excellence for Stem Cells and Regenerative Medicine (CESC), Zewail City of Science and Technology, October Gardens, 6th of October City, Giza, 12582, Egypt
| | - Nagwa El-Badri
- Center of Excellence for Stem Cells and Regenerative Medicine (CESC), Zewail City of Science and Technology, October Gardens, 6th of October City, Giza, 12582, Egypt.
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4
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Acute cytotoxicity, genotoxicity, and apoptosis induced by petroleum VOC emissions in A549 cell line. Toxicol In Vitro 2022; 83:105409. [DOI: 10.1016/j.tiv.2022.105409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 04/28/2022] [Accepted: 05/30/2022] [Indexed: 11/27/2022]
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5
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Lakhdar R, Mumby S, Abubakar-Waziri H, Porter A, Adcock IM, Chung KF. Lung toxicity of particulates and gaseous pollutants using ex-vivo airway epithelial cell culture systems. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 305:119323. [PMID: 35447256 DOI: 10.1016/j.envpol.2022.119323] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Revised: 04/14/2022] [Accepted: 04/14/2022] [Indexed: 06/14/2023]
Abstract
Air pollution consists of a multi-faceted mix of gases and ambient particulate matter (PM) with diverse organic and non-organic chemical components that contribute to increasing morbidity and mortality worldwide. In particular, epidemiological and clinical studies indicate that respiratory health is adversely affected by exposure to air pollution by both causing and worsening (exacerbating) diseases such as chronic obstructive pulmonary disease (COPD), asthma, interstitial pulmonary fibrosis and lung cancer. The molecular mechanisms of air pollution-induced pulmonary toxicity have been evaluated with regards to different types of PM of various sizes and concentrations with single and multiple exposures over different time periods. These data provide a plausible interrelationship between cellular toxicity and the activation of multiple biological processes including proinflammatory responses, oxidative stress, mitochondrial oxidative damage, autophagy, apoptosis, cell genotoxicity, cellular senescence and epithelial-mesenchymal transition. However, these molecular changes have been studied predominantly in cell lines rather than in primary bronchial or nasal cells from healthy subjects or those isolated from patients with airways disease. In addition, they have been conducted under different cell culture conditions and generally in submerged culture rather than the more relevant air-liquid interface culture and with a variety of air pollutant exposure protocols. Cell types may respond differentially to pollution delivered as an aerosol rather than being bathed in media containing agglomerations of particles. As a result, the actual pathophysiological pathways activated by different PMs in primary cells from the airways of healthy and asthmatic subjects remains unclear. This review summarises the literature on the different methodologies utilised in studying the impact of submicron-sized pollutants on cells derived from the respiratory tract with an emphasis on data obtained from primary human cell. We highlight the critical underlying molecular mechanisms that may be important in driving disease processes in response to air pollution in vivo.
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Affiliation(s)
- Ramzi Lakhdar
- National Heart and Lung Institute and *Department of Materials, Imperial College London, London, SW3 6LY, United Kingdom.
| | - Sharon Mumby
- National Heart and Lung Institute and *Department of Materials, Imperial College London, London, SW3 6LY, United Kingdom.
| | - Hisham Abubakar-Waziri
- National Heart and Lung Institute and *Department of Materials, Imperial College London, London, SW3 6LY, United Kingdom.
| | - Alexandra Porter
- National Heart and Lung Institute and *Department of Materials, Imperial College London, London, SW3 6LY, United Kingdom.
| | - Ian M Adcock
- National Heart and Lung Institute and *Department of Materials, Imperial College London, London, SW3 6LY, United Kingdom.
| | - Kian Fan Chung
- National Heart and Lung Institute and *Department of Materials, Imperial College London, London, SW3 6LY, United Kingdom.
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6
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Xu X, Nie Y, Wang W, Ullah I, Tung WT, Ma N, Lendlein A. Generation of 2.5D lung bud organoids from human induced pluripotent stem cells. Clin Hemorheol Microcirc 2021; 79:217-230. [PMID: 34487028 DOI: 10.3233/ch-219111] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Human induced pluripotent stem cells (hiPSCs) are a promising cell source to generate the patient-specific lung organoid given their superior differentiation potential. However, the current 3D cell culture approach is tedious and time-consuming with a low success rate and high batch-to-batch variability. Here, we explored the establishment of lung bud organoids by systematically adjusting the initial confluence levels and homogeneity of cell distribution. The efficiency of single cell seeding and clump seeding was compared. Instead of the traditional 3D culture, we established a 2.5D organoid culture to enable the direct monitoring of the internal structure via microscopy. It was found that the cell confluence and distribution prior to induction were two key parameters, which strongly affected hiPSC differentiation trajectories. Lung bud organoids with positive expression of NKX 2.1, in a single-cell seeding group with homogeneously distributed hiPSCs at 70% confluence (SC_70%_hom) or a clump seeding group with heterogeneously distributed cells at 90% confluence (CL_90%_het), can be observed as early as 9 days post induction. These results suggest that a successful lung bud organoid formation with single-cell seeding of hiPSCs requires a moderate confluence and homogeneous distribution of cells, while high confluence would be a prominent factor to promote the lung organoid formation when seeding hiPSCs as clumps. 2.5D organoids generated with defined culture conditions could become a simple, efficient, and valuable tool facilitating drug screening, disease modeling and personalized medicine.
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Affiliation(s)
- Xun Xu
- Institute of Active Polymers and Berlin-Brandenburg Centre for Regenerative Therapies, Helmholtz-Zentrum Hereon, Teltow, Germany
| | - Yan Nie
- Institute of Active Polymers and Berlin-Brandenburg Centre for Regenerative Therapies, Helmholtz-Zentrum Hereon, Teltow, Germany.,Institute of Biochemistry and Biology, University of Potsdam, Potsdam, Germany
| | - Weiwei Wang
- Institute of Active Polymers and Berlin-Brandenburg Centre for Regenerative Therapies, Helmholtz-Zentrum Hereon, Teltow, Germany
| | - Imran Ullah
- Institute of Active Polymers and Berlin-Brandenburg Centre for Regenerative Therapies, Helmholtz-Zentrum Hereon, Teltow, Germany
| | - Wing Tai Tung
- Institute of Active Polymers and Berlin-Brandenburg Centre for Regenerative Therapies, Helmholtz-Zentrum Hereon, Teltow, Germany.,Institute of Biochemistry and Biology, University of Potsdam, Potsdam, Germany
| | - Nan Ma
- Institute of Active Polymers and Berlin-Brandenburg Centre for Regenerative Therapies, Helmholtz-Zentrum Hereon, Teltow, Germany.,Institute of Chemistry and Biochemistry, Free University of Berlin, Berlin, Germany
| | - Andreas Lendlein
- Institute of Active Polymers and Berlin-Brandenburg Centre for Regenerative Therapies, Helmholtz-Zentrum Hereon, Teltow, Germany.,Institute of Biochemistry and Biology, University of Potsdam, Potsdam, Germany.,Institute of Chemistry and Biochemistry, Free University of Berlin, Berlin, Germany
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7
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Effective exposure of chemicals in in vitro cell systems: A review of chemical distribution models. Toxicol In Vitro 2021; 73:105133. [DOI: 10.1016/j.tiv.2021.105133] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 02/11/2021] [Accepted: 02/25/2021] [Indexed: 12/23/2022]
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8
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Chae S, Hong J, Hwangbo H, Kim G. The utility of biomedical scaffolds laden with spheroids in various tissue engineering applications. Am J Cancer Res 2021; 11:6818-6832. [PMID: 34093855 PMCID: PMC8171099 DOI: 10.7150/thno.58421] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 04/14/2021] [Indexed: 12/13/2022] Open
Abstract
A spheroid is a complex, spherical cellular aggregate supporting cell-cell and cell-matrix interactions in an environment that mimics the real-world situation. In terms of tissue engineering, spheroids are important building blocks that replace two-dimensional cell cultures. Spheroids replicate tissue physiological activities. The use of spheroids with/without scaffolds yields structures that engage in desired activities and replicate the complicated geometry of three-dimensional tissues. In this mini-review, we describe conventional and novel methods by which scaffold-free and scaffolded spheroids may be fabricated and discuss their applications in tissue regeneration and future perspectives.
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9
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Wu RWK, Chu ESM, Yuen JWM, Huang Z. Comparative study of FosPeg® photodynamic effect on nasopharyngeal carcinoma cells in 2D and 3D models. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2020; 210:111987. [PMID: 32801063 DOI: 10.1016/j.jphotobiol.2020.111987] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 07/21/2020] [Accepted: 08/04/2020] [Indexed: 12/24/2022]
Abstract
Photodynamic Therapy (PDT) offers an alternative option for the treatment of nasopharyngeal carcinoma (NPC). The utilization of 3-dimensional (3D) culture model might provide better understanding of PDT effects on NPC cells. The aim of this in vitro study was to compare PDT effect on NPC cells using 2D and 3D models. Two 3D culture models were established using liquid overlay method with agarose base (MCL) and hanging drop method (MCS). PDT was carried out using the combination of FosPeg® and 652 nm laser in 3D and conventional 2D models. The effects of 3D culture size and morphology on the uptake and distribution of sensitizer and gene expression were examined. Photocytotoxity, mode of cell death, and protein expression were compared for 2D and 3D models. Regular and irregular NPC spheroids were obtained from MCL and MCS methods, respectively. A significantly down-regulation of LMP1 mRNA were observed in MCL spheroid. The sensitizer uptake in 3D spheroids was half of 2D culture. More sensitizers were required to obtain IC50 in 3D spheroids. Apoptosis, necrosis and autophagosomes were detected in PDT treated 2D and 3D cells. Different protein expression patterns were observed in 2D and 3D models. FosPeg® PDT is effective in killing NPC cells. MCL-derived 3D spheroid model is more suitable for the evaluation of PDT killing mechanisms.
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Affiliation(s)
- Ricky Wing Kei Wu
- School of Medical and Health Sciences, Tung Wah College, Hong Kong, China.
| | | | - John Wai Man Yuen
- School of Nursing, Hong Kong Polytechnic University, Hong Kong, China
| | - Zheng Huang
- Biomedical Photonics Center, MOE Key Laboratory of Photonics Science and Technology for Medicine, School of OptoElectronic and Information Engineering, Fujian Normal University, Fuzhou, Hong Kong, China
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10
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Investigation of uniform sized multicellular spheroids raised by microwell arrays after the combined treatment of electric field and anti-cancer drug. Biomed Microdevices 2019; 21:94. [DOI: 10.1007/s10544-019-0442-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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11
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Escher BI, Glauch L, König M, Mayer P, Schlichting R. Baseline Toxicity and Volatility Cutoff in Reporter Gene Assays Used for High-Throughput Screening. Chem Res Toxicol 2019; 32:1646-1655. [PMID: 31313575 DOI: 10.1021/acs.chemrestox.9b00182] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Most studies using high-throughput in vitro cell-based bioassays tested chemicals up to a certain fixed concentration. It would be more appropriate to test up to concentrations predicted to elicit baseline toxicity because this is the minimal toxicity of every chemical. Baseline toxicity is also called narcosis and refers to nonspecific intercalation of chemicals in biological membranes, leading to loss of membrane structure and impaired functioning of membrane-related processes such as mitochondrial respiration. In cells, baseline toxicity manifests as cytotoxicity, which was quantified by a robust live-cell imaging method. Inhibitory concentrations for baseline toxicity varied by orders of magnitude between chemicals and were described by a simple quantitative structure activity relationship (QSAR) with the liposome-water partition constant as a sole descriptor. The QSAR equations were remarkably similar for eight reporter gene cell lines of different cellular origin, six of which were used in Tox21. Mass-balance models indicated constant critical membrane concentrations for all cells and all chemicals with a mean of 69 mmol·kglip-1(95% CI: 49-89), which is in the same range as for bacteria and aquatic organisms and consistent with the theory of critical membrane burden of narcosis. The challenge of developing baseline QSARs for cell lines is that many confirmed baseline toxicants are rather volatile. We deduced from cytotoxicity experiments with semi-volatile chemicals that only chemicals with medium-air partition constants >10,000 L/L can be tested in standard robotic setups without appreciable loss of effect. Chemicals just below that cutoff showed crossover effects in neighboring wells, whereas the effects of chemicals with lower medium-air partition constants were plainly lost. Applying the "volatility cut-off" to >8000 chemicals tested in Tox21 indicated that approximately 20% of Tox21 chemicals could have partially been lost during the experiments. We recommend applying the baseline QSARs together with volatility cut-offs for experimental planning of reporter gene assays, that is, to dose only chemicals with medium-air partition constants >10,000 at concentrations up to the baseline toxicity level.
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Affiliation(s)
- Beate I Escher
- Department of Cell Toxicology , Helmholtz Centre for Environmental Research - UFZ , Permoserstr. 15 , DE-04318 Leipzig , Germany.,Environmental Toxicology, Center for Applied Geoscience , Eberhard Karls University Tübingen , Hölderlinstr. 12 , DE-72074 Tübingen , Germany
| | - Lisa Glauch
- Department of Cell Toxicology , Helmholtz Centre for Environmental Research - UFZ , Permoserstr. 15 , DE-04318 Leipzig , Germany
| | - Maria König
- Department of Cell Toxicology , Helmholtz Centre for Environmental Research - UFZ , Permoserstr. 15 , DE-04318 Leipzig , Germany
| | - Philipp Mayer
- Department of Environmental Engineering , Technical University of Denmark , Bygningstorvet 115 , DK-2800 Kongens Lyngby , Denmark
| | - Rita Schlichting
- Department of Cell Toxicology , Helmholtz Centre for Environmental Research - UFZ , Permoserstr. 15 , DE-04318 Leipzig , Germany
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12
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Lei KF, Goh A, Huang CH. Paper/polymer composited microfluidic platform for screening cell viability and protein expression under a chemical gradient environment. Talanta 2019; 205:120124. [PMID: 31450396 DOI: 10.1016/j.talanta.2019.120124] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 07/05/2019] [Accepted: 07/06/2019] [Indexed: 01/03/2023]
Abstract
Culturing cells in three-dimensional (3D) environment can obtain a better clinical prediction for evaluating chemotherapy protocols and become a standard culture practice in cancer research. However, it involves tedious and time consuming operation. In the current work, a paper/polymer composited microfluidic platform was developed for screening cell viability and protein expression under chemical gradient environment. Cells were cultured in a paper sheet and expressed cell properties in 3D environment. The paper sheet was encapsulated in the microfluidic platform generating chemical gradient. After the culture course, investigations of cell viability and protein expression were respectively achieved by directly adding reagent and conducting on-paper immunoassay. Activation of respective signaling pathway could be identified and responded to different stimulations including nutrient gradient, IL-6 cytokine gradient, and anti-cancer drug gradient. On-paper analysis of protein expression could be completed within 1.5 h. The present technique integrates tedious operations on a single paper substrate. It provides a first-tier screening tool for cellular response under chemical gradient.
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Affiliation(s)
- Kin Fong Lei
- Graduate Institute of Biomedical Engineering, Chang Gung University, Taoyuan, Taiwan; Department of Radiation Oncology, Chang Gung Memorial Hospital, Linkou, Taiwan.
| | - Andrew Goh
- Graduate Institute of Biomedical Engineering, Chang Gung University, Taoyuan, Taiwan
| | - Chun-Hao Huang
- PhD Program in Biomedical Engineering, College of Engineering, Chang Gung University, Taoyuan, Taiwan
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13
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Huang CH, Lei KF, Tsang NM. Apoptosis and cell cycle arrest of hepatocellular carcinoma spheroids treated by an alternating electric field. Biotechnol Prog 2019; 35:e2787. [DOI: 10.1002/btpr.2787] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Revised: 12/17/2018] [Accepted: 02/05/2019] [Indexed: 12/22/2022]
Affiliation(s)
- Chun-Hao Huang
- Program in Biomedical Engineering; College of Engineering, Chang Gung University; Taoyuan Taiwan
| | - Kin Fong Lei
- Graduate Institute of Biomedical Engineering, Chang Gung University; Taoyuan Taiwan
- Department of Radiation Oncology; Chang Gung Memorial Hospital; Linkou Taiwan
| | - Ngan-Ming Tsang
- Department of Radiation Oncology; Chang Gung Memorial Hospital; Linkou Taiwan
- Department of Traditional Chinese Medicine; Chang Gung University; Taoyuan Taiwan
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14
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Tsai MT, Huang BH, Yeh CC, Lei KF, Tsang NM. Non-Invasive Quantification of the Growth of Cancer Cell Colonies by a Portable Optical Coherence Tomography. MICROMACHINES 2019; 10:mi10010035. [PMID: 30621072 PMCID: PMC6356435 DOI: 10.3390/mi10010035] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 12/28/2018] [Accepted: 01/02/2019] [Indexed: 12/15/2022]
Abstract
Investigation of tumor development is essential in cancer research. In the laboratory, living cell culture is a standard bio-technology for studying cellular response under tested conditions to predict in vivo cellular response. In particular, the colony formation assay has become a standard experiment for characterizing the tumor development in vitro. However, quantification of the growth of cell colonies under a microscope is difficult because they are suspended in a three-dimensional environment. Thus, optical coherence tomography (OCT) imaging was develop in this study to monitor the growth of cell colonies. Cancer cell line of Huh 7 was used and the cells were applied on a layer of agarose hydrogel, i.e., a non-adherent surface. Then, cell colonies were gradually formed on the surface. The OCT technique was used to scan the cell colonies every day to obtain quantitative data for describing their growth. The results revealed the average volume increased with time due to the formation of cell colonies day-by-day. Additionally, the distribution of cell colony volume was analyzed to show the detailed information of the growth of the cell colonies. In summary, the OCT provides a non-invasive quantification technique for monitoring the growth of the cell colonies. From the OCT images, objective and precise information is obtained for higher prediction of the in vivo tumor development.
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Affiliation(s)
- Meng-Tsan Tsai
- Department of Electrical Engineering, Chang Gung University, Taoyuan 33302, Taiwan.
- Department of Dermatology, Chang Gung Memorial Hospital, Linkou 33305, Taiwan.
| | - Bo-Huei Huang
- Department of Electrical Engineering, Chang Gung University, Taoyuan 33302, Taiwan.
| | - Chun-Chih Yeh
- Graduate Institute of Biomedical Engineering, Chang Gung University, Taoyuan 33302, Taiwan.
| | - Kin Fong Lei
- Graduate Institute of Biomedical Engineering, Chang Gung University, Taoyuan 33302, Taiwan.
- Department of Radiation Oncology, Chang Gung Memorial Hospital, Linkou 33305, Taiwan.
| | - Ngan-Ming Tsang
- Department of Radiation Oncology, Chang Gung Memorial Hospital, Linkou 33305, Taiwan.
- Department of Traditional Chinese Medicine, Chang Gung University, Taoyuan 33302, Taiwan.
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15
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Lacroix G, Koch W, Ritter D, Gutleb AC, Larsen ST, Loret T, Zanetti F, Constant S, Chortarea S, Rothen-Rutishauser B, Hiemstra PS, Frejafon E, Hubert P, Gribaldo L, Kearns P, Aublant JM, Diabaté S, Weiss C, de Groot A, Kooter I. Air-Liquid Interface In Vitro Models for Respiratory Toxicology Research: Consensus Workshop and Recommendations. ACTA ACUST UNITED AC 2018; 4:91-106. [PMID: 32953944 PMCID: PMC7500038 DOI: 10.1089/aivt.2017.0034] [Citation(s) in RCA: 123] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
In vitro air-liquid interface (ALI) cell culture models can potentially be used to assess inhalation toxicology endpoints and are usually considered, in terms of relevancy, between classic (i.e., submerged) in vitro models and animal-based models. In some situations that need to be clearly defined, ALI methods may represent a complement or an alternative option to in vivo experimentations or classic in vitro methods. However, it is clear that many different approaches exist and that only very limited validation studies have been carried out to date. This means comparison of data from different methods is difficult and available methods are currently not suitable for use in regulatory assessments. This is despite inhalation toxicology being a priority area for many governmental organizations. In this setting, a 1-day workshop on ALI in vitro models for respiratory toxicology research was organized in Paris in March 2016 to assess the situation and to discuss what might be possible in terms of validation studies. The workshop was attended by major parties in Europe and brought together more than 60 representatives from various academic, commercial, and regulatory organizations. Following plenary, oral, and poster presentations, an expert panel was convened to lead a discussion on possible approaches to validation studies for ALI inhalation models. A series of recommendations were made and the outcomes of the workshop are reported.
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Affiliation(s)
- Ghislaine Lacroix
- Chronic Risks Division, Institut National de l'Environnement Industriel et des RISques, Verneuil-en-Halatte, France
| | - Wolfgang Koch
- In Vitro und Mechanistische Toxikologie, Fraunhofer ITEM, Hannover, Germany
| | - Detlef Ritter
- In Vitro und Mechanistische Toxikologie, Fraunhofer ITEM, Hannover, Germany
| | - Arno C Gutleb
- Environmental Research and Innovation (ERIN) Department, Luxembourg Institute of Science and Technology, Esch-sur-Alzette, Luxembourg
| | - Søren Thor Larsen
- Inhalation Toxicology Group, National Research Centre for the Working Environment, Copenhagen, Denmark
| | - Thomas Loret
- Chronic Risks Division, Institut National de l'Environnement Industriel et des RISques, Verneuil-en-Halatte, France
| | - Filippo Zanetti
- Systems Toxicology Department, Philip Morris International R&D, Neuchâtel, Switzerland
| | | | - Savvina Chortarea
- BioNanomaterials, Adolphe Merkle Institute, University of Fribourg, Fribourg, Switzerland.,Laboratory for Materials-Biology Interactions, EMPA, Swiss Federal Laboratories for Materials, Science and Technology, St Gallen, Switzerland
| | | | - Pieter S Hiemstra
- Department of Pulmonology, Leiden University Medical Center, Leiden, The Netherlands
| | - Emeric Frejafon
- Chronic Risks Division, Institut National de l'Environnement Industriel et des RISques, Verneuil-en-Halatte, France
| | - Philippe Hubert
- Chronic Risks Division, Institut National de l'Environnement Industriel et des RISques, Verneuil-en-Halatte, France
| | - Laura Gribaldo
- Directorate F-Health, Consumers and Reference Materials Chemicals Safety and Alternative Methods Unit (F.3), EURL ECVAM, JRC, Ispra, Italy
| | - Peter Kearns
- Environment, Health and Safety Division, OECD, Paris, France
| | - Jean-Marc Aublant
- European Affairs and Standardization, Laboratoire National de Métrologie et d'Essais, Paris, France
| | - Silvia Diabaté
- Institute of Toxicology and Genetics, Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - Carsten Weiss
- Institute of Toxicology and Genetics, Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - Antoinette de Groot
- Toxicological and Environmental Risk Assessment (TERA) Department, Solvay, Brussels, Belgium
| | - Ingeborg Kooter
- Department of Circular Environment and Environment (CEE), TNO, Utrecht, The Netherlands
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16
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Yamanishi C, Jen K, Takayama S. Techniques to Produce and Culture Lung Tumor Organoids. CANCER DRUG DISCOVERY AND DEVELOPMENT 2018. [DOI: 10.1007/978-3-319-60511-1_1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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17
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Human lung epithelial cell cultures for analysis of inhaled toxicants: Lessons learned and future directions. Toxicol In Vitro 2017; 47:137-146. [PMID: 29155131 DOI: 10.1016/j.tiv.2017.11.005] [Citation(s) in RCA: 100] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Revised: 09/28/2017] [Accepted: 11/14/2017] [Indexed: 01/01/2023]
Abstract
The epithelium that covers the conducting airways and alveoli is a primary target for inhaled toxic substances, and therefore a focus in inhalation toxicology. The increasing concern about the use of animal models has stimulated the development of in vitro cell culture models for analysis of the biological effects of inhaled toxicants. However, the validity of the current in vitro models and their acceptance by regulatory authorities as an alternative to animal models is a reason for concern, and requires a critical review. In this review, focused on human lung epithelial cell cultures as a model for inhalation toxicology, we discuss the choice of cells for these models, the cell culture system used, the method of exposure as well as the various read-outs to assess the cellular response. We argue that rapid developments in the 3D culture of primary epithelial cells, the use of induced pluripotent stem cells for generation of lung epithelial cells and the development of organ-on-a-chip technology are among the important developments that will allow significant advances in this field. Furthermore, we discuss the various routes of application of inhaled toxicants by air-liquid interface models as well as the vast array of read-outs that may provide essential information. We conclude that close collaboration between researchers from various disciplines is essential for development of valid methods that are suitable for replacement of animal studies for inhalation toxicology.
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18
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Wells JR, Schoemaecker C, Carslaw N, Waring MS, Ham JE, Nelissen I, Wolkoff P. Reactive indoor air chemistry and health-A workshop summary. Int J Hyg Environ Health 2017; 220:1222-1229. [PMID: 28964679 PMCID: PMC6388628 DOI: 10.1016/j.ijheh.2017.09.009] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Revised: 09/18/2017] [Accepted: 09/22/2017] [Indexed: 12/23/2022]
Abstract
The chemical composition of indoor air changes due to the reactive nature of the indoor environment. Historically, only the stable parent compounds were investigated due to their ease of measurement by conventional methods. Today, however, scientists can better characterize oxidation products (gas and particulate-phase) formed by indoor chemistry. An understanding of occupant exposure can be developed through the investigation of indoor oxidants, the use of derivatization techniques, atmospheric pressure detection, the development of real-time technologies, and improved complex modeling techniques. Moreover, the connection between exposure and health effects is now receiving more attention from the research community. Nevertheless, a need still exists for improved understanding of the possible link between indoor air chemistry and observed acute or chronic health effects and long-term effects such as work-related asthma.
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Affiliation(s)
- J R Wells
- NIOSH/HELD/EAB, Morgantown, WV, USA.
| | | | - N Carslaw
- Environment Department, University of York, York, UK
| | - M S Waring
- Drexel University, Philadelphia, PA, USA
| | - J E Ham
- NIOSH/HELD/EAB, Morgantown, WV, USA
| | - I Nelissen
- Flemish Institute for Technological Research (VITO), Mol, Belgium
| | - P Wolkoff
- National Research Center for the Working Environment, Copenhagen, Denmark
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19
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Lei KF, Lin BY, Tsang NM. Real-time and label-free impedimetric analysis of the formation and drug testing of tumor spheroids formed via the liquid overlay technique. RSC Adv 2017. [DOI: 10.1039/c7ra00209b] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Tumor spheroids formed via the liquid overlay technique were quantitatively monitored by impedance measurement across the interdigitated electrodes.
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Affiliation(s)
- Kin Fong Lei
- Graduate Institute of Medical Mechatronics
- Chang Gung University
- Taoyuan
- Taiwan
- Department of Mechanical Engineering
| | - Bo-Yuan Lin
- Graduate Institute of Medical Mechatronics
- Chang Gung University
- Taoyuan
- Taiwan
| | - Ngan-Ming Tsang
- Department of Radiation Oncology
- Chang Gung Memorial Hospital
- Taiwan
- School of Traditional Chinese Medicine
- Chang Gung University
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20
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Bhowmick R, Gappa-Fahlenkamp H. Cells and Culture Systems Used to Model the Small Airway Epithelium. Lung 2016; 194:419-28. [PMID: 27071933 DOI: 10.1007/s00408-016-9875-2] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Accepted: 04/01/2016] [Indexed: 01/28/2023]
Abstract
The pulmonary epithelium is divided into upper, lower, and alveolar (or small) airway epithelia and acts as the mechanical and immunological barrier between the external environment and the underlying submucosa. Of these, the small airway epithelium is the principal area of gas exchange and has high immunological activity, making it a major area of cell biology, immunology, and pharmaceutical research. As animal models do not faithfully represent the human pulmonary system and ex vivo human lung samples have reliability and availability issues, cell lines, and primary cells are widely used as small airway epithelial models. In vitro, these cells are mostly cultured as monolayers (2-dimensional cultures), either media submerged or at air-liquid interface. However, these 2-dimensional cultures lack a three dimension-a scaffolding extracellular matrix, which establishes the intercellular network in the in vivo airway epithelium. Therefore, 3-dimensional cell culture is currently a major area of development, where cells are cultured in a matrix or are cultured in a manner that they develop ECM-like scaffolds between them, thus mimicking the in vivo phenotype more faithfully. This review focuses on the commonly used small airway epithelial cells, their 2-dimensional and 3-dimensional culture techniques, and their comparative phenotype when cultured under these systems.
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Affiliation(s)
- Rudra Bhowmick
- Department of Chemical Engineering, Oklahoma State University, 420 Engineering North, Stillwater, OK, 74078, USA
| | - Heather Gappa-Fahlenkamp
- Department of Chemical Engineering, Oklahoma State University, 420 Engineering North, Stillwater, OK, 74078, USA.
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21
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Stalter D, O'Malley E, von Gunten U, Escher BI. Fingerprinting the reactive toxicity pathways of 50 drinking water disinfection by-products. WATER RESEARCH 2016; 91:19-30. [PMID: 26773486 DOI: 10.1016/j.watres.2015.12.047] [Citation(s) in RCA: 106] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Revised: 12/02/2015] [Accepted: 12/28/2015] [Indexed: 05/08/2023]
Abstract
A set of nine in vitro cellular bioassays indicative of different stages of the cellular toxicity pathway was applied to 50 disinfection by-products (DBPs) to obtain a better understanding of the commonalities and differences in the molecular mechanisms of reactive toxicity of DBPs. An Eschericia coli test battery revealed reactivity towards proteins/peptides for 64% of the compounds. 98% activated the NRf2-mediated oxidative stress response and 68% induced an adaptive stress response to genotoxic effects as indicated by the activation of the tumor suppressor protein p53. All DBPs reactive towards DNA in the E. coli assay and activating p53 also induced oxidative stress, confirming earlier studies that the latter could trigger DBP's carcinogenicity. The energy of the lowest unoccupied molecular orbital ELUMO as reactivity descriptor was linearly correlated with oxidative stress induction for trihalomethanes (r(2)=0.98) and haloacetamides (r(2)=0.58), indicating that potency of these DBPs is connected to electrophilicity. However, the descriptive power was poor for haloacetic acids (HAAs) and haloacetonitriles (r(2) (<) 0.06). For HAAs, we additionally accounted for speciation by including the acidity constant with ELUMO in a two-parameter multiple linear regression model. This increased r(2) to >0.80, indicating that HAAs' potency is connected to both, electrophilicity and speciation. Based on the activation of oxidative stress response and the soft electrophilic character of most tested DBPs we hypothesize that indirect genotoxicity-e.g., through oxidative stress induction and/or enzyme inhibition-is more plausible than direct DNA damage for most investigated DBPs. The results provide not only a mechanistic understanding of the cellular effects of DBPs but the effect concentrations may also serve to evaluate mixture effects of DBPs in water samples.
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Affiliation(s)
- Daniel Stalter
- National Research Centre for Environmental Toxicology, Entox, The University of Queensland, Brisbane, Australia; Eawag, Swiss Federal Institute of Aquatic Science and Technology, Duebendorf, Switzerland.
| | - Elissa O'Malley
- National Research Centre for Environmental Toxicology, Entox, The University of Queensland, Brisbane, Australia
| | - Urs von Gunten
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, Duebendorf, Switzerland; School of Architecture, Civil and Environmental Engineering (ENAC), Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015, Lausanne, Switzerland
| | - Beate I Escher
- National Research Centre for Environmental Toxicology, Entox, The University of Queensland, Brisbane, Australia; Department of Cell Toxicology, UFZ - Helmholtz Centre for Environmental Research, Leipzig, Germany; Department of Environmental Toxicology, Center for Applied Geosciences, Eberhard Karls University, Tübingen, Germany
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22
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In vitro assays as a tool for determination of VOCs toxic effect on respiratory system: A critical review. Trends Analyt Chem 2016. [DOI: 10.1016/j.trac.2015.10.012] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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23
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Jin L, Gaus C, Escher BI. Adaptive stress response pathways induced by environmental mixtures of bioaccumulative chemicals in dugongs. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2015; 49:6963-6973. [PMID: 25923886 DOI: 10.1021/acs.est.5b00947] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
To address the poorly understood mixture effects of chemicals in the marine mammal dugong, we coupled equilibrium-based passive sampling in blubber to a range of in vitro bioassays for screening mixtures of bioaccumulative chemicals. The modes of action included early effect indicators along important toxicity pathways, such as induction of xenobiotic metabolism, and some integrative indicators downstream of the molecular initiating event, such as adaptive stress responses. Activation of aryl hydrocarbon receptor (AhR) and Nrf2-mediated oxidative stress response were found to be the most prominent effects, while the p53-mediated DNA damage response and NF-κB-mediated response to inflammation were not significantly affected. Although polychlorinated dibenzo-p-dioxins (PCDDs) quantified in the samples accounted for the majority of AhR-mediated activity, PCDDs explained less than 5% of the total oxidative stress response, despite their known ability to activate this pathway. Altered oxidative stress response was observed with both individual chemicals and blubber extracts subject to metabolic activation by rat liver S9 fraction. Metabolic activation resulted in both enhanced and reduced toxicity, suggesting the relevance and utility of incorporating metabolic enzymes into in vitro bioassays. Our approach provides a first insight into the burden of toxicologically relevant bioaccumulative chemical mixtures in dugongs and can be applied to lipid tissue of other wildlife species.
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Affiliation(s)
- Ling Jin
- †The University of Queensland, National Research Centre for Environmental Toxicology (Entox), Brisbane, QLD 4018, Australia
| | - Caroline Gaus
- †The University of Queensland, National Research Centre for Environmental Toxicology (Entox), Brisbane, QLD 4018, Australia
| | - Beate I Escher
- †The University of Queensland, National Research Centre for Environmental Toxicology (Entox), Brisbane, QLD 4018, Australia
- ‡UFZ - Helmholtz Centre for Environmental Research, Cell Toxicology, 04318 Leipzig, Germany
- ∥Eberhard Karls University Tübingen, Environmental Toxicology, Center for Applied Geosciences, 72074 Tübingen, Germany
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24
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Liu FF, Peng C, Ng JC. BTEX in vitro exposure tool using human lung cells: trips and gains. CHEMOSPHERE 2015; 128:321-6. [PMID: 25754011 DOI: 10.1016/j.chemosphere.2015.01.058] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Revised: 01/30/2015] [Accepted: 01/31/2015] [Indexed: 05/27/2023]
Abstract
Cytotoxicity of benzene, toluene, ethylbenzene and xylenes (BTEX) to human lung cells was explored using three different exposure methods: Method 1 - in normal 96-well plates using DMSO as a carrier vehicle, we exposed (a) human lung carcinoma A549 cells, (b) A549 cells over-expressed with cytochrome P450 2E1 cells, and (c) normal lung fibroblast LL-24 cells to benzene, toluene, ethylbenzene and xylene individually and in a mixture which models car exhaust gases for between 1-88 h. We found that the order of the BTEX potency is benzene<toluene<ethylbenzene=m-xylene with acute BTEX toxicity to A549≈LL-24>CYP2E1 over-expressed A549 cells. A significant difference was found between inter-assay responses for all 24h exposures (P<0.005) suggesting a poor assay repeatability. No sign of potency increase was found from 6 to 72 h exposures. Method 2 - Using sealed vials to expose A549 cells to benzene, toluene and ethylbenzene, we observed a twenty-fold increase in their cytotoxicity, but also with no time-course effect. Method 3 - Using air exposed hanging-drop cell culture, we were able to see both an increase of demonstration of toxicity and a time-course effect from 1 to 12h exposure. We conclude that exposing cells in sealed and unsealed media using DMSO as a carrier vehicle was not suitable for BTEX exposure studies. Hanging-drop air exposure has more potential. It should be noted that if there are any changes in their exposure matrixes, its exposure mass distribution in cells could differ.
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Affiliation(s)
- Faye F Liu
- The University of Queensland, National Research Centre for Environmental Toxicology (Entox), 39 Kessels Rd., Coopers Plains, Brisbane, QLD 4108, Australia; CRC for Contamination Assessment and Remediation of the Environment, Mawson Lakes, Adelaide, SA 5095, Australia
| | - Cheng Peng
- The University of Queensland, National Research Centre for Environmental Toxicology (Entox), 39 Kessels Rd., Coopers Plains, Brisbane, QLD 4108, Australia; CRC for Contamination Assessment and Remediation of the Environment, Mawson Lakes, Adelaide, SA 5095, Australia
| | - Jack C Ng
- The University of Queensland, National Research Centre for Environmental Toxicology (Entox), 39 Kessels Rd., Coopers Plains, Brisbane, QLD 4108, Australia; CRC for Contamination Assessment and Remediation of the Environment, Mawson Lakes, Adelaide, SA 5095, Australia.
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25
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Gao B, Wang L, Han S, Pingguan-Murphy B, Zhang X, Xu F. Engineering of microscale three-dimensional pancreatic islet models in vitro and their biomedical applications. Crit Rev Biotechnol 2015; 36:619-29. [PMID: 25669871 DOI: 10.3109/07388551.2014.1002381] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Diabetes now is the most common chronic disease in the world inducing heavy burden for the people's health. Based on this, diabetes research such as islet function has become a hot topic in medical institutes of the world. Today, in medical institutes, the conventional experiment platform in vitro is monolayer cell culture. However, with the development of micro- and nano-technologies, several microengineering methods have been developed to fabricate three-dimensional (3D) islet models in vitro which can better mimic the islet of pancreases in vivo. These in vitro islet models have shown better cell function than monolayer cells, indicating their great potential as better experimental platforms to elucidate islet behaviors under both physiological and pathological conditions, such as the molecular mechanisms of diabetes and clinical islet transplantation. In this review, we present the state-of-the-art advances in the microengineering methods for fabricating microscale islet models in vitro. We hope this will help researchers to better understand the progress in the engineering 3D islet models and their biomedical applications such as drug screening and islet transplantation.
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Affiliation(s)
- Bin Gao
- a The Key Laboratory of Biomedical Information Engineering of Ministry of Education , Xi'an Jiaotong University School of Life Science and Technology , Xi'an , China .,b Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University , Xi'an , China .,c Department of Endocrinology and Metabolism , Xijing Hospital, Fourth Military Medical University , Xi'an , China
| | - Lin Wang
- a The Key Laboratory of Biomedical Information Engineering of Ministry of Education , Xi'an Jiaotong University School of Life Science and Technology , Xi'an , China .,b Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University , Xi'an , China
| | - Shuang Han
- d Institute of Digestive Disease, Xijing Hospital, Fourth Military Medical University , Xi'an , China , and
| | - Belinda Pingguan-Murphy
- e Department of Biomedical Engineering, Faculty of Engineering , University of Malaya , Kuala Lumpur , Malaysia
| | - Xiaohui Zhang
- a The Key Laboratory of Biomedical Information Engineering of Ministry of Education , Xi'an Jiaotong University School of Life Science and Technology , Xi'an , China .,b Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University , Xi'an , China
| | - Feng Xu
- a The Key Laboratory of Biomedical Information Engineering of Ministry of Education , Xi'an Jiaotong University School of Life Science and Technology , Xi'an , China .,b Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University , Xi'an , China
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26
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Liu FF, Escher BI, Were S, Duffy L, Ng JC. Mixture Effects of Benzene, Toluene, Ethylbenzene, and Xylenes (BTEX) on Lung Carcinoma Cells via a Hanging Drop Air Exposure System. Chem Res Toxicol 2014; 27:952-9. [DOI: 10.1021/tx5000552] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Faye F. Liu
- National
Research Centre for Environmental Toxicology (Entox), The University of Queensland, 39 Kessels Road, Coopers Plains, Brisbane, Queensland 4108, Australia
- CRC for Contamination Assessment and Remediation of the Environment, Mawson Lakes, Adelaide, South Australia 5095, Australia
| | - Beate I. Escher
- National
Research Centre for Environmental Toxicology (Entox), The University of Queensland, 39 Kessels Road, Coopers Plains, Brisbane, Queensland 4108, Australia
| | - Stephen Were
- Department
of Agriculture, Fisheries and Forestry, Queensland, Health and Food Sciences Precinct (DAFF), 39 Kessels Road, Brisbane, Queensland 4108, Australia
| | - Lesley Duffy
- CSIRO Food and Nutritional Sciences, 39 Kessels Road, Coopers Plains, Brisbane, Queensland 4108, Australia
| | - Jack C. Ng
- National
Research Centre for Environmental Toxicology (Entox), The University of Queensland, 39 Kessels Road, Coopers Plains, Brisbane, Queensland 4108, Australia
- CRC for Contamination Assessment and Remediation of the Environment, Mawson Lakes, Adelaide, South Australia 5095, Australia
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