Alpha Synuclein

Alpha-synuclein is a small, intrinsically disordered neuronal protein that helps regulate synaptic vesicles and neurotransmitter release, making it central to brain function and neurodegenerative disease research. In healthy neurons, its N-terminal amphipathic region binds acidic phospholipid membranes, supporting vesicle organization and SNARE-complex assembly; altered conformations can instead form oligomers and fibrils. These aggregates are characteristic of Parkinson’s disease and related synucleinopathies, including dementia with Lewy bodies. Studying alpha-synuclein in molecular, cellular, and animal models helps clarify disease mechanisms, identify potential biomarkers, and guide therapies aimed at preventing misfolding, aggregation, or neuronal toxicity.

Alpha Synuclein - Related Videos

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JoVE EoE - Neuropathology

Detection of Phosphorylated Alpha-Synuclein Using Western Blotting

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2025

Add a loading buffer containing a detergent, a reducing agent, and a tracking dye.

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

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2025

This video demonstrates the injection of alpha-synuclein fibrils into a mouse to induce neuroinflammation. The fibrils are injected intraperitoneally into a transgenic mouse expressing mutated alpha-synuclein proteins. Upon reaching the central nervous system, the fibrils enter neurons and induce aggregation of the mutated proteins. The aggregates spread to neighboring neurons, microglia, and astrocytes. Recognition of the aggregates triggers microglia to induce neuroinflammation, damaging the...

Immunostaining of Neurons Treated with Alpha-Synuclein Aggregates

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2025

This video demonstrates the immunostaining of neurons treated with alpha-synuclein (αS) aggregates. The neurons are first treated with αS aggregates. They are then fixed, permeabilized, and treated with a blocking solution. Primary antibodies are added, followed by a fluorescently labeled secondary antibodies and a nuclear stain. The sample is then mounted and observed under a microscope.

An Immunofluorescence Assay to Detect Alpha-Synuclein Aggregates in a Skin Biopsy Section

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2025

This video demonstrates an immunofluorescence assay to detect neurodegenerative disease-specific alpha-synuclein aggregates on skin biopsy sections. Free-floating immunostaining is employed to fluorescently label the carboxyl-terminal hydrolase and the alpha-synuclein aggregates in the dermal neurons. Under a confocal microscope, cells with fluorescence from both antibodies indicate the presence of alpha-synuclein aggregates in the dermal neurons.

Research

JoVE Journal - Neuroscience
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Sequential Extraction of Soluble and Insoluble Alpha-Synuclein from Parkinsonian Brains

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Cited by 46 •

2016

Here, we present a protocol for the isolation of increasingly insoluble/aggregated alpha-synuclein (α-syn) from post-mortem human brain tissue. Through the utilization of buffers with increasing detergent strength and high-speed ultracentrifugation techniques, the variable properties of α-syn aggregation in diseased and non-diseased tissue can be examined.

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