Advanced in vitro exposure systems.

20. Aug. 2017

Development of a 3D co-culture system to assess the respiratory sensitizing potential of chemicals

10th Congress on Alternatives and Animal Use in the Life Sciences August 20–24, 2017. Seattle, Washington, USA.

A. Chary 1,2, T. Serchi1, J. Hennen2, B. Bloemeke2, J. Ezendam3, S. Cambier1, E. Moschini1, A.C. Gutleb1
1Department of Environmental Research and Innovation (ERIN), Luxembourg Institute of Science and Technology (LIST), Belvaux, Luxembourg,
2Department of Environmental Toxicology, University of Trier, Trier, Germany,
3RIVM Centre for Environmental Protection (GZB), National Institute for Public Health and the Environment (RIVM), Utrecht, The Netherlands.

The aim of this study is to adapt the 3D-co-culture system previously developed by LIST (Klein et al.1,2) to allow the in vitro study of respiratory sensitization processes and to
find markers for the assessment of the respiratory sensitizing potential of inhaled compounds and mimicking the alveolar barrier to study cell-to-cell communication and inflammatory effects of nano particles at the air-liquid-interface.

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6. Jul. 2017

Biokinetics of Aerosolized Liposomal Ciclosporin A in Human Lung Cells In Vitro Using an Air-Liquid Cell Interface Exposure System

DOI:10.1089/jamp.2016.1361

Schmid O1,2, Jud C3, Umehara Y3, Mueller D4, Bucholski A4, Gruber F4, Denk O4, Egle R4, Petri-Fink A3, Rothen-Rutishauser B3.

1 Comprehensive Pneumology Center (CPC), German Center for Lung Research (DZL) , Munich, Germany .
2 Institute of Lung Biology and Disease, Helmholtz Zentrum München-German Research Center for Environmental Health , Neuherberg, Germany .
3 BioNanomaterials, Adolphe Merkle Institute, University of Fribourg , Fribourg, Switzerland .
4 PARI Pharma GmbH, Starnberg, Germany .

The lung epithelial barrier was studied in vitro. Human lung epithelial cells (alveolar A549 and bronchial 16HBE14o- epithelial cells) were exposed to an aerosolized immunosuppressive drug encapsulated in liposomes at the air-liquid interface (ALI) using a dose-controlled air-liquid interface cell exposure (ALICE) system.

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27. Jun. 2017

Evaluation of whole cigarette smoke induced oxidative stress in A549 and BEAS–2B cells

DOI:10.1016/j.etap.2017.06.023 

Shimin Zhanga,b, Xiang Lia, Fuwei Xiea, Kejian Liua, Huimin Liua, Jianping Xiea

a Key Laboratory of Tobacco Chemistry, Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou 450001, China
b Technique Center of Tobacco Production, PingDingshanTobacco Company of Henan Tobacco Monopoly Bureau, PingDingshan 467000, China

The purpose of this study is to evaluate oxidative stress induced by whole cigarette smoke based on the air-liquid interface exposure system. The cytotoxicity of whole smoke were measured by MTT and NRU assays, and several intracellular and extracellular oxidative stress biomarkers such as GSH and GSSG, MDA, HNE, EC-SOD and 8-OHdG were investigated in A549 and BEAS–2B cells.

 

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13. Jun. 2017

PETA science consortium donates $400K in VITROCELL in vitro test equipment

London -- Today, the PETA International Science Consortium Ltd. announced that it is providing equipment to laboratories working on human-relevant methods to replace the use of animals in inhalation testing. Valued at more than $400,000, VITROCELL Systems inhalation exposure machines were awarded to four institutions in the U.S., U.K., and Belgium that are leading the field of in vitro (non-animal) inhalation toxicology. These donations complement the Consortium's recent workshops and webinars focused on replacing inhalation testing in animals.

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3. Jun. 2017

Delivery of glycerol-based aerosols in the Vitrocell® 24/48 aerosol exposure system

ISAM, THE 21ST INTERNATIONAL SOCIETY OF AEROSOLS IN MEDICINE CONGRESS, 03-07 June, 2017

Sandro Steiner, Shoaib Majeed, Gilles Kratzer, Mounir Rhouma, Quentin Dutertre, Grégory Vuillaume, Arno Knorr, Julia Hoeng, Stefan Frentzel

Philip Morris International R&D, Philip Morris Products S.A.

Characterization of the Vitrocell® 24/48 aerosol exposure system for its use in conjunction with liquid aerosols shows a high feasibility for an easy detection of aerosol deposition.

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3. Jun. 2017

In Vitro Testing of Aerosolized Substances with Primary 3D Human Airway Epithelia: Application of ALICE-Cloud Technology to e-liquids (e-cigarettes)

ISAM, THE 21ST INTERNATIONAL SOCIETY OF AEROSOLS IN MEDICINE CONGRESS, 03-07 June, 2017

S. Constant1, A. Stelzl2,3, O. Eickelberg2,3,4, O. Schmid2,3
1Epithelix, Genève, Switzerland
2Comprehensive Pneumology Center (CPC-M), Member of the German Center for Lung Research (DZL), Munich, Germany
3Institute of Lung Biology and Disease, Helmholtz Zentrum München, Munich/Neuherberg, Germany
4University Hospital of the Ludwig Maximilians University (LMU), Munich, Germany

The poster shows the ALICE-Cloud technology combined with primary ALI 3D cell cultures. The effect of nebulized e-liquids were investigated in terms of tissue integrity, celia beating frequency, mucin secretion and IL-8 secretion.

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22. May. 2017

Regulating temperature and relative humidity in air–liquid interface in vitro systems eliminates cytotoxicity resulting from control air exposures

DOI: 10.1039/c7tx00109f
Jose Zavala,a Rebecca Greenan,b Q. Todd Krantz,a David M. DeMarini,a Mark Higuchi,a M. Ian Gilmour a and Paul A. Whiteb

aNHEERL, U.S. Environmental Protection Agency, Research Triangle Park, NC 27711, USA.
bMechanistic Studies Division, Environmental Health Science and Research Bureau, Health Canada, Ottawa, Ontario K1A 0K9, Canada.


The aim of this study was to test whether temperature and relative humidity has an influence on the cytotoxicity to BEAS-2B cells on a VITROCELL® 6 air-liquid interface system by measuring the viability (WST-1 cell proliferation assay) and lactate dehydrogenase (LDH) release.
Note from VITROCELL: We inform our customers about the possible need for humidification during installation and training. Among the need for humidification, possible other reasons for low clean air viability are clean air quality and cell handling procedures. Please see our website chapter on humidification for further information http://www.vitrocell.com/inhalation-toxicology/humidification

 

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15. May. 2017

Human Asthmatic Bronchial Cells Are More Susceptible to Subchronic Repeated Exposures of Aerosolized Carbon Nanotubes At Occupationally Relevant Doses Than Healthy Cells

DOI: 10.1021/acsnano.7b01992

Savvina Chortarea,1 Hana Barosova,1 Martin James David Clift,2 Peter Wick,3 Alke Petri-Fink,1,4 and Barbara Rothen-Rutishauser,1

1BioNanomaterials, Adolphe Merkle Institute, University of Fribourg, CH-1700 Fribourg, Switzerland
2In Vitro Toxicology Group, Swansea University Medical School, Swansea SA2 8PP, Wales, U.K.
3Laboratory for Materials-Biology Interactions, Empa, Swiss Federal Laboratories for Materials, Science and Technology, 9014 St Gallen, Switzerland
4Department of Chemistry, University of Fribourg, CH-1700 Fribourg, Switzerland

The aim of this study was to realistically mimic subchronic inhalation of multiwalled carbone nanotubes in vitro, using the air−liquid interface cell exposure system for aerosol exposures on reconstituted human bronchial tissue from healthy and asthmatic donors. Cytotoxicity, cell morphology, cilia beating frequency, mucociliary clearance, gene expression analysis of oxidative stress and (pro‑)inflammatory markers as well as (pro‑)inflammatory cytokine secretion were successfully observed.

 

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1. May. 2017

Proof of Concept of the VITROCELL® Dry Powder Chamber: A New In Vitro Test System for the Controlled Deposition of Aerosol Formulations

Marius Hittinger,1 Sarah Barthold,2 Lorenz Siebenbürger,1 Kilian Zäh,3 Alexander Gress,1 Sabrina Guenther,1 Birgit Wiegand,1 Carsten Boerger,1 Markus Berger,4 Tobias Krebs,4 Henrik Groß,1 and Claus-Michael Lehr1,5

1PharmBioTec GmbH, Saarbrücken, Germany
2Saarland University, Department of Pharmacy, Saarbrücken, Germany
3Scienceneering UG, Blieskastel, Germany
4Vitrocell Systems GmbH, Waldkirch, Germany
5Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), HZI, Saarbrücken, Germany

The VITROCELL® Dry Powder Chamber is designed for aerosol deposition of different sized particles separated by their time of flight. For the development of this new instrument salbutamol sulphate was successfully exposed to human pulmonary epithelial cell culture by sedimentation and diffusion in vitro.

 

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6. Mar. 2017

Endothelial responses of the alveolar barrier in vitro in a dose-controlled exposure to diesel exhaust particulate matter

DOI 10.1186/s12989-017-0186-4

Sebastian G. Klein1,2, Sébastien Cambier1, Jennifer Hennen2, Sylvain Legay1, Tommaso Serchi1, Inge Nelissen3, Aline Chary1, Elisa Moschini1, Andreas Krein1, Brunhilde Blömeke2 and Arno C. Gutleb1

1Luxembourg Institute of Science and Technology (LIST), Environmental Research and Innovation (ERIN) Department, 41, rue du Brill, L-4422 Belvaux, Grand Duchy of Luxembourg
2Department of Environmental Toxicology, University Trier, Universitätsring 15, 54296 Trier, Germany


In this study tetracultures of alveolar epithelial cells (A549) were exposed to different doses of DEPM (SRM2975) at the air-liquid-interface to present the first approach to combine a complex 3D tetraculture in vitro system with native aerosol exposure equipment to mimic the exposure situation in vivo as closely as possible.

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