Related Experiment Video
Updated: Jun 16, 2026
A High Throughput, Multiplexed and Targeted Proteomic CSF Assay to Quantify Neurodegenerative Biomarkers and Apolipoprotein E Isoforms Status
Published on: October 20, 2016
A versatile high throughput screening system for the simultaneous identification of anti-inflammatory and
Elizabeth Hansen1, Martina Krautwald, Annette E Maczurek
1Department of Biochemistry and Molecular Biology & Comparative Genomics Centre, School of Pharmacy and Molecular Sciences, James Cook University, Townsville, Australia.
Abstract:
In many chronic neurodegenerative diseases including Frontotemporal Dementia and Alzheimer's disease (AD), microglial activation is suggested to be involved in pathogenesis or disease progression. Activated microglia secrete a variety of cytokines, including interleukin-1beta, interleukin-6, and tumor necrosis factor as well as reactive oxygen and nitrogen species (ROS/RNS). ROS and RNS contribute to alterations in neuronal glucose uptake, inhibition of mitochondrial enzymes, a decrease in mitochondrial membrane potential, impaired axonal transport, and synaptic signaling. In addition, ROS act as signaling molecules in pro-inflammatory redox-active signal transduction pathways. To establish a high throughput screening system for anti-inflammatory and neuroprotective compounds, we have constructed an "Enhanced Green Fluorescent protein" (EGFP) expressing neuronal cell line and set up a murine microglia/neuron co-culture system with these EGFP expressing neuronal cells. We show that microglia activation leads to neuronal cell death, which can be conveniently measured by loss of neuronal EGFP fluorescence. Moreover, we used this system to test selected polyphenolic compounds for their ability to downregulate inflammatory markers and to protect neurons against microglial insult. We suggest that this system might allow accelerated drug discovery for the treatment of inflammation-mediated neurodegenerative diseases.
Insights
This study developed a novel microglia/neuron co-culture system to screen for anti-inflammatory and neuroprotective compounds. The system efficiently detects neuronal death caused by activated microglia, aiding drug discovery for neurodegenerative diseases.
Area of Science:
- Neuroscience
- Cell Biology
- Pharmacology
Background:
- Microglial activation is implicated in neurodegenerative diseases like Alzheimer's disease.
- Activated microglia release inflammatory cytokines and reactive oxygen/nitrogen species (ROS/RNS).
- ROS/RNS negatively impact neuronal function, including glucose uptake and mitochondrial activity.
Purpose of the Study:
- To establish a high-throughput screening system for anti-inflammatory and neuroprotective compounds.
- To model inflammation-mediated neurodegeneration using a co-culture system.
- To identify compounds that protect neurons from microglial insult.
Main Methods:
- Developed an Enhanced Green Fluorescent protein (EGFP)-expressing neuronal cell line.
- Established a murine microglia/neuron co-culture system.
- Quantified neuronal cell death by measuring loss of EGFP fluorescence.
- Tested polyphenolic compounds for anti-inflammatory and neuroprotective effects.
Main Results:
- Microglial activation induced neuronal cell death, measurable via EGFP fluorescence loss.
- Polyphenolic compounds demonstrated potential to downregulate inflammatory markers.
- Selected compounds showed neuroprotective effects against microglial-induced damage.
Conclusions:
- The developed co-culture system provides a robust platform for screening neuroprotective agents.
- This system facilitates accelerated drug discovery for inflammation-mediated neurodegenerative diseases.
- The findings highlight the potential of targeting microglial activation in treating neurodegeneration.
