Advanced in vitro exposure systems.

14. Apr. 2020

Toxicity and Gene Expression Profiling of Copper- and Titanium-Based Nanoparticles Using Air–Liquid Interface Exposure

https://doi.org/10.1021/acs.chemrestox.9b00489


Matthias Hufnagel, Sarah Schoch, Johanna WallBettina, Maria Strauch, Andrea Hartwig
Department of Food Chemistry and Toxicology, Institute of Applied Biosciences, Karlsruhe Institute of Technology (KIT), Adenauerring 20a, 76131 Karlsruhe, Germany

 

In this study an ALI exposure was combined with a high-throughput RT-qPCR approach to evaluate the toxicological potential nanoparticles in A549 cells.

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27. Mar. 2020

Reliable in vitro Exposure Systems for Screening of Antiviral Lead Compounds against Coronavirus (COVID-19 / SARS-CoV-2)

VITROCELL Application Note for Highly efficient and realistic application of aerosolized drugs to ­human cells of the respiratory tract under physiologic conditions

In inhalation therapy, drugs are deposited as aerosols on cells of the respiratory tract from the nasal or lung region. Physiologically realistic in vitro cell culture models of the pulmonary epithelium and the air-blood barrier as well as from the nasal region are commercially available. Recently, these models have been refined to mimic  SARS-CoV-2 infections.

VITROCELL Application Note.

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26. Mar. 2020

New lung model gives lab animals a breather

A first-of-its-kind 3D lung model could replace animals in inhalation toxicity research.

Autor

Francesca Lake

Source
Barosova H, Maione AG, Septiadi D et al. Use of EpiAlveolar lung model to predict fibrotic potential of multiwalled carbon nanotubes. ACS Nano

doi:10.1021/acsnano.9b06860 (2020);
https://pubs.acs.org/doi/10.1021/acsnano.9b06860
https://www.eurekalert.org/pub_releases/2020-03/pfte-psg032420.php

 

The model utilizes an air–liquid interface exposure device, VITROCELL Cloud, which PETA had awarded to the Heriot–Watt group in 2017 along with three other groups, in an attempt to support the development of non-animal toxicity testing methods.

 

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Categories: Publications

Tags: VITROCELL Cloud

26. Mar. 2020

Screening antiviraler pharmazeutischer Leitwirkstoffe gegen das Coronavirus (COVID-19 / SARS-CoV-2)

VITROCELL in vitro Expositionssysteme für hocheffiziente und realistische Applikation aerosolisierter Medikamente auf menschliche Zellen des Atemtraktes unter physiologischen Bedingungen.

In der Inhalationstherapie werden pharmazeutische Präparate als Aerosole auf Zellen des Atemtraktes im Nasen- oder Lungenbereich appliziert. Zur präklinischen Entwicklung neuer Arzneimittel werden dafür oft kommerziell erhältliche, physiologisch relevante in vitro Zellkulturmodelle des Nasen-, Rachen- oder Lungenepithels verwendet. In jüngster Zeit wurden diese Modelle verfeinert, um SARS-CoV-2 Infektionen nachzuahmen.

VITROCELL Anwendungshinweis.

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20. Mar. 2020

Use of EpiAlveolar Lung Model to Predict Fibrotic Potential of Multiwalled Carbon Nanotubes

https://dx.doi.org/10.1021/acsnano.9b06860

Autors
Barosova H1, Maione AG2, Septiadi D1, Sharma M3, Haeni L1, Balog S1, O'Connell O2, Jackson GR2, Brown D4, Clippinger AJ3, Hayden P2,5, Petri-Fink A1,6, Stone V4, Rothen-Rutishauser B1.

1 Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland.
2 MatTek Corporation, 200 Homer Avenue, Ashland, Massachusetts 01721, United States.
3 PETA International Science Consortium Ltd., 8 All Saints Street, London N1 9RL, U.K.
4 Nano-Safety Research Group, Heriot-Watt University, Edinburgh EH14 4AS, U.K.
5 BioSurfaces, Inc., 200 Homer Ave, Ashland, Massachusetts 01721, United States.
6 Department of Chemistry, University of Fribourg, Chemin du Musée 9, 1700 Fribourg, Switzerland.

 

This study characterizes a 3D in vitro alveolar tissue model comprised entirely of primary human cells to investigate its ability to predict pulmonary fibrosis. The study demonstrated that the EpiAlveolar model recapitulates relevant lung phenotypes and functions and is stable at VITROCELL Cloud with repeated exposures over 3 weeks. 

 

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19. Feb. 2020

Differences in cytotoxicity of lung epithelial cells exposed to titanium dioxide nanofibers and nanoparticles: Comparison of air-liquid interface and submerged cellcultures

doi: 10.1016/j.tiv.2020.104798

Autors

Medina-Reyes EI1, Delgado-Buenrostro NL2, Leseman DL3, Déciga-Alcaraz A2, He R4, Gremmer ER3, Fokkens PHB3, Flores-Flores JO5, Cassee FR4, Chirino YI2.
1 Laboratorio de Carcinogénesis y Toxicología, Unidad de Biomedicina, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México, Estado de México, Mexico. Electronic address: medinaingrid0@gmail.com.
2 Laboratorio de Carcinogénesis y Toxicología, Unidad de Biomedicina, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México, Estado de México, Mexico.
3 National Institute for Public Health and the Environment (RIVM), Bilthoven, the Netherlands.
4 National Institute for Public Health and the Environment (RIVM), Bilthoven, the Netherlands; Institute of Risk Assessment Sciences, Utrecht University, Utrecht, the Netherlands.
5 Instituto de Ciencias Aplicadas y Tecnología, Universidad Nacional Autónoma de México, Circuito Exterior S/N, Ciudad Universitaria, Coyoacán, CP 04510 Ciudad de México, Mexico

 

The Air-liquid interface (ALI) model has emerged as a closer physiological system that mimics exposure in gaseous and liquid phases. This Study shows that the exposure to TiO2 nanofibers and nanoparticles displays similar toxicity both the ALI and submerged cell cultures, using lung epithelial A549 cells. Additionally, they detected for the first time that TiO2 nanofibers were located into the nucleus.

 

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1. Nov. 2019

Electronic Cigarette Vapor With Nicotine Causes Airway Mucociliary Dysfunction Preferentially via TRPA1 Receptors

DOI: 10.1164/rccm.201811-2087OC


Samuel Chung 1 2, Nathalie Baumlin 1 2, John S Dennis 1 2, Robert Moore 2, Sebastian F Salathe 2, Phillip L Whitney 2, Juan Sabater 3, William M Abraham 3, Michael D Kim 1 2, Matthias Salathe 1 2
1Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Kansas Medical Center, Kansas City, Kansas.
2Division of Pulmonary, Critical Care and Sleep Medicine, University of Miami School of Medicine, Miami, Florida; and.
3Department of Research, Mount Sinai Medical Center, Miami Beach, Florida.
 

The transient receptor potential ankyrin 1 (TRPA1) is a molecular target for vape effects due to its expression in airway epithelia and its reported gating by nicotine, reactive oxidants, and flavors, especially cinnamaldehyde. To test whether nicotine had effects independent of other e-cig vapor constituents, the Vitrocell® CLOUD exposure system was utilized to nebulize fixed nicotine doses onto the apical surface of ALI cultures. A549 cell cultures were exposed to nicotine containing e-cig vapor, produced by the VC-1 smoke exposure robot, in the air-liquid interface.

 

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26. Jun. 2019

PETA Science Group Donates $50,000 in Equipment to Pioneering Laboratory

The Institute for In Vitro Sciences Will Use the Donation to Replace Animals in Respiratory Toxicity Testing

The PETA International Science Consortium Ltd. is donating $50,000 in equipment to the Institute for In Vitro Sciences (IIVS), a nonprofit laboratory in Gaithersburg that conducts and develops animal-free test methods. IIVS will use the VITROCELL® Cloud inhalation exposure system—instead of animals—to assess the effects of substances on the human respiratory tract.

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Categories: Publications

Tags: VITROCELL Cloud

27. May. 2019

Characterization of the Vitrocell® Cloud SEQ 24 System and its Application in Exposure to Aerosolized Bortezomib and Ibuprofen

S. Steiner1, Sandra Ferreira1, Moran Morelli1, Audrey Baldi1, Arkadiusz K. Kuczaj1, Stefan Frentzel1, Marco van der Toorn1, Manuel Peitsch1, Julia Hoeng1
1 PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000 Neuchâtel, Switzerland

This poster shows the investigation how aerosols are delivered within the Cloud SEQ 24 and how cell cultures respond to exposures in the system. Ibuprofen and Bortezomib was exposed to three dimensional organotypic tissue cultures of the human bronchial epithelium and biological endpoints were measured: Cytotoxicity, Interleukin 8 and Proteasome activity.

 

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25. May. 2019

In vitro model for the prediction of respiratory sensitization of inhaled chemicals and protein allergens

ISAM, Montreux, 25 – 29 May 2019

Weber P. 1, Chary A.1,2, Saibene M. 1, Serchi T.1, Cambier S.1 , Moschini E.1, Contal S.1, Hennen J.2, Ezendam J.3, Blömeke B.2, Gutleb A.C.1
1 Environmental Research and Innovation (ERIN) Department, Luxembourg Institute of Science and Technology (LIST), Luxembourg. 
2 Department of Environmental Toxicology, Trier University, Germany.
3Centre for Environmental Protection, National Institute for Public Health and the Environment (RIVM), The Netherlands.

The Aim of this study is the adaptation of a 3D-co-culture system previously developed by Klein et al.2013. Inclusion of dendritic cells to study respiratory sensitization processes and identification and evaluation of markers to assess the respiratory sensitizing potential of inhaled compounds.

 

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Categories: Publications

Tags: VITROCELL Cloud

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