JoVE Encyclopedia of Experiments

Encyclopedia of Experiments: Neuroscience

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Induction of Neuroinflammation in Mice via Injection of Alpha-Synuclein Fibrils

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成績單

Position a transgenic mouse in a dorsal position. The mouse expresses a mutated form of the alpha-synuclein protein, which is prone to aggregation.

Take a suspension of alpha-synuclein fibrils, aggregates of misfolded alpha-synuclein protein.

Inject the fibrils into the peritoneal cavity to allow their systemic distribution.

Once in the bloodstream, the fibrils reach the central nervous system and bind to endothelial cells of the blood-brain barrier.

The fibrils are transported via vesicles across the cells and enter the nervous tissue. They then invade neurons through endocytosis and promote aggregation of the mutated alpha-synuclein proteins.

These aggregates are released by exocytosis and spread to neighboring neurons, microglia, and astrocytes.

Recognition of the aggregates triggers microglia to release reactive oxygen species, which damages the tissue, and cytokines, which recruit additional immune cells. This results in neuroinflammation that leads to neural cell death.

Allow the mouse to recover to assess alpha-synuclein-mediated neuroinflammation.

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