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A Neurite Outgrowth Assay and Neurotoxicity Assessment with Human Neural Progenitor Cell-Derived Neurons
Published on: August 6, 2020
Neuronal models for evaluation of proliferation in vitro using high content screening
William R Mundy1, Nicholas M Radio, Theresa M Freudenrich
1Integrated Systems Toxicology Division, National Health and Environmental Effects Research Laboratory, Office of Research and Development, US Environmental Protection Agency, B105-06, Research Triangle Park, NC 27711, USA. mundy.william@epa.gov
Toxicology
|February 13, 2010
Summary
In vitro testing rapidly screens chemicals for toxicity. PC12 cells are most sensitive for assessing neuronal proliferation inhibition, aiding developmental neurotoxicity identification.
Area of Science:
- Toxicology and pharmacology
- Neuroscience
- Cell biology
Background:
- In vitro methods offer rapid chemical toxicity screening.
- Identifying developmental neurotoxicants requires robust in vitro models for neurodevelopmental processes.
- Selecting appropriate cell models is crucial for in vitro toxicity testing.
Purpose of the Study:
- To compare the sensitivity of three neuronal cell lines (PC12, N1E-115, SH-SY5Y) as models for assessing chemical-induced inhibition of neuronal proliferation.
- To evaluate the utility of high-content screening for rapid assessment of proliferation inhibition.
- To identify the most sensitive cell line for future developmental neurotoxicity studies.
Main Methods:
- Neuronal cell lines (PC12, N1E-115, SH-SY5Y) were cultured and proliferation assessed using 5-bromo-2'-deoxyuridine (BrdU) incorporation.
- High-content screening with automated image analysis was employed to quantify BrdU-labeled cells.
- Cell line sensitivity was determined by exposing them to known proliferation inhibitors and calculating the concentration inhibiting proliferation by 50% (I(50)).
Main Results:
- All three cell lines showed differential sensitivity to chemical exposure.
- PC12 cells (rat) were the most sensitive, with 6 of 8 tested chemicals inhibiting proliferation.
- SH-SY5Y cells (human) were less sensitive, and N1E-115 cells (mouse) exhibited high experimental variability.
Conclusions:
- High-content screening effectively assesses chemical effects on neuronal proliferation.
- PC12 cells demonstrate superior sensitivity for detecting proliferation inhibition, making them a promising model for developmental neurotoxicity screening.
- Differential cell line sensitivity highlights the importance of model selection in in vitro toxicology.
