NDLI: Comparative human and rat neurospheres reveal species differences in chemical effects on neurodevelopmental key events

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Comparative human and rat neurospheres reveal species differences in chemical effects on neurodevelopmental key events

Content Provider	Springer Nature Link
Author	Baumann, Jenny Gassmann, Kathrin Masjosthusmann, Stefan DeBoer, Denise Bendt, Farina Giersiefer, Susanne Fritsche, Ellen
Copyright Year	2015
Abstract	The developing brain is highly vulnerable to the adverse effects of chemicals, resulting in neurodevelopmental disorders in humans. Currently, animal experiments in the rat are the gold standard for developmental neurotoxicity (DNT) testing; however, these guideline studies are insufficient in terms of animal use, time and costs and bear the issue of species extrapolation. Therefore, the necessity for alternative methods that predict DNT of chemicals faster, cheaper and with a high predictivity for humans is internationally agreed on. In this respect, we developed an in vitro model for DNT key event screening, which is based on primary human and rat neural progenitor cells grown as neurospheres. They are able to mimic basic processes of early fetal brain development and enable an investigation of species differences between humans and rodents in corresponding cellular models. The goal of this study was to investigate to what extent human and rat neurospheres were able to correctly predict the DNT potential of a well-characterized training set of nine chemicals by investigating effects on progenitor cell proliferation, migration and neuronal differentiation in parallel to cell viability, and to compare these chemical responses between human and rat neurospheres. We demonstrate that (1) by correlating these human and rat in vitro results to existing in vivo data, human and rat neurospheres classified most compounds correctly and thus may serve as a valuable component of a modular DNT testing strategy and (2) human and rat neurospheres differed in their sensitivity to most chemicals, reflecting toxicodynamic species differences of chemicals.
Starting Page	1415
Ending Page	1427
Page Count	13
File Format	PDF
ISSN	03405761
Journal	Archives of Toxicology
Volume Number	90
Issue Number	6
e-ISSN	14320738
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2015-07-28
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Neurosphere Human Rat Developmental Neurotoxicity In vitro Species difference Pharmacology/Toxicology Occupational Medicine/Industrial Medicine Environmental Health Biomedicine general
Content Type	Text
Resource Type	Article
Subject	Health, Toxicology and Mutagenesis Medicine Toxicology

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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