High Content In Vitro Survival Assay of Cortical Neurons.

Area of Science:

• Neuroscience
• Cell Biology
• Biotechnology

Background:

• Neuronal survival assays are crucial for studying neurodegenerative diseases and drug efficacy.
• Metabolic assays like MTT offer a global but imprecise measure of neuronal health.
• Existing methods lack single-cell resolution and temporal monitoring capabilities.

Purpose of the Study:

• To develop a high-throughput, single-cell resolution method for monitoring primary cortical neuron survival in vitro.
• To establish a semi-automated analysis pipeline for accurate temporal assessment of neuronal viability.
• To provide a reproducible protocol for evaluating treatments affecting neuronal survival.

Main Methods:

• Utilized live imaging microscopy with a high-throughput microscope to monitor transduced primary cortical neurons from 7 to 21 days in vitro.
• Developed a semi-automated analysis pipeline incorporating data stratification to account for plating variability.
• Applied the protocol to assess the impact of glial extracellular vesicles on neuronal survival.

Main Results:

• Enabled real-time, single-cell monitoring of neuronal survival in 96-well plates.
• The data stratification method effectively reduced variability caused by initial plating density.
• Successfully identified subtle changes in neuronal viability over the 7-21 days in vitro period.

Conclusions:

• The developed live imaging and analysis pipeline offers a robust, high-resolution method for studying neuronal survival.
• This protocol enhances the accuracy of assessing drug or genetic manipulation effects on neurons.
• Provides a valuable tool for neurodegenerative disease research and therapeutic development.