
Feature | Specification |
---|---|
Application | Cell Signaling |
Protocol Time | 2h at RT |
Sample Volume | 30 µL |
Alpha-Synuclein (α-Syn) is a small, intrinsically disordered protein predominantly expressed in neurons, particularly in presynaptic terminals. It plays a crucial role in synaptic function, vesicle trafficking, neurotransmitter release and synaptic plasticity. In its normal state, α-Syn exists as a soluble monomer, but it can misfold and aggregate into oligomers, fibrils, and Lewy bodies. These aggregates are a hallmark of synucleinopathies, including Parkinson's disease (PD), Dementia with Lewy Bodies (DLB), and Multiple System Atrophy (MSA). Misfolded α-Syn disrupts cellular homeostasis, impairs synaptic function, and propagates toxic fibrils between neurons in a prion-like manner, leading to neurodegeneration. Therapeutic strategies aim to reduce α-Syn aggregation, enhance its degradation, and prevent its pathological spread.
The AlphaLISA SureFire Ultra Human and Mouse Phospho-α-Synuclein (Ser129) Aggregate Detection Kit is a sandwich immunoassay for the quantitative detection of phospho-α-Synuclein (Ser129) aggregate in cellular lysates, using Alpha Technology.
Formats:
AlphaLISA SureFire Ultra kits are compatible with:
AlphaLISA SureFire Ultra kits can be used for:
The Phospho Aggregation-AlphaLISA SureFire Ultra assay measures the level of phosphorylated aggregates of a protein target in a cell lysate. This assay uses a single phospho-specific antibody that recognizes an exposed phospho-epitope on the aggregated target protein, that is conjugated with either a CaptSure™ tag or with Biotin. AlphaLISA assays require two bead types: Acceptor and Donor beads.
Acceptor beads are coated with a proprietary CaptSure agent to specifically immobilize the antibody labeled with the CaptSure tag. Donor beads are coated with Streptavidin to capture the biotinylated antibody. In the presence of phosphorylated aggregate protein, the Donor and Acceptor beads are brought into close proximity whereby the singlet oxygen transfers energy to excite the Acceptor bead, allowing the generation of a luminescent Alpha signal. The amount of light emission is directly proportional to the quantity of phosphorylated aggregate protein present in the sample.
The two-plate protocol involves culturing and treating the cells in a 96-well plate before lysis, then transferring lysates into a 384-well Optiplate plate before the addition of Phospho Aggregation-AlphaLISA SureFire Ultra detection reagents. This protocol allows for the cells viability and confluence to be monitored. In addition, lysates from a single well can be used to measure multiple targets.
Detection of aggregated target protein with AlphaLISA SureFire Ultra reagents can be performed in a single plate used for culturing, treatment, and lysis. No washing steps are required. This HTS designed protocol allows for miniaturization while maintaining robust AlphaLISA SureFire Ultra quality.
Selectivity of the α-Synuclein Phospho (Ser129) Aggregate assay was assessed by assaying aggregated and monomeric proteins. Phosphorylated α-Synuclein aggregate (Abcam ab218819) and phosphorylated α-Synuclein monomer were prepared at approximately 250 ng/mL in Lysis Buffer and evaluated using the Phospho (Ser129) Aggregate AlphaLISA SureFire Ultra assay.
For the detection step, 10 µL of protein was transferred into a 384-well white OptiPlate, followed by 5 µL of Acceptor mix and incubated for 1 hour at room temperature. Finally, 5 µL of Donor mix was then added to each well and incubated for 1 hour at RT in the dark. The plate was read on an Envision using standard AlphaLISA settings.
α-Synuclein Phospho (Ser129) Aggregate assay recognizes phosphorylated α-Synuclein protein only when it is aggregated.
Application |
Cell Signaling
|
---|---|
Automation Compatible |
Yes
|
Brand |
AlphaLISA SureFire Ultra
|
Detection Modality |
Alpha
|
Protocol Time |
2h at RT
|
Sample Volume |
30 µL
|
Shipping Conditions |
Shipped in Blue Ice
|
Target |
α-Synuclein
|
Target Class |
Phosphoproteins
|
Target Species |
Human
Mouse
|
Technology |
Alpha
|
Therapeutic Area |
Neuroscience
|
Unit Size |
100 assay points
|
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