| Feature | Specification |
|---|---|
| Application | Protein Quantification |
| Dynamic Range | 5 - 100,000 pg/mL |
| Limit of Detection | 5 pg/mL |
| Sample Volume | 5 µL |
Formats:
Features:
Human Growth Hormone (GH, GHN or GH1) is the major regulator of postnatal growth, having somatogenic, metabolic, and differentiative effects on its target cells and tissues. It is a 22 kDa protein (191 amino acids) belonging to a family of cytokine peptides, and is produced and secreted by acidophilic or somatotropic cells of the anterior pituitary gland. GH binds to its cognate transmembrane receptor (GHR), and signals through the activation of JAKs, STATs, AKT, and ERK. It exerts many of its effects by stimulation of IGF-1 (Insulin-like Growth Factor I) production in liver and peripheral tissues. Human GH can also be detected in urine, a finding that could be helpful in diagnosing certain GH deficiencies.
AlphaLISA technology allows the detection of molecules of interest in a no-wash, highly sensitive, quantitative assay. In an AlphaLISA assay, a biotinylated anti-analyte antibody binds to the Streptavidin-coated Donor beads while another anti-analyte antibody is conjugated to AlphaLISA Acceptor beads. In the presence of the analyte, the beads come into close proximity. The excitation of the Donor beads causes the release of singlet oxygen molecules that triggers a cascade of energy transfer in the Acceptor beads, resulting in a sharp peak of light emission at 615 nm.
The AlphaLISA assay is based on an AlphaLISA sandwich immunoassay involving a biotinylated anti-analyte antibody bound to Streptavidin-coated AlphaLISA Donor beads and an anti-analyte antibody conjugated to AlphaLISA Acceptor beads. Both antibodies are directed against the analyte of interest. In the presence of the target, both antibodies bind to analyte and the beads come into proximity. The excitation of the Donor beads provokes the release of singlet oxygen molecules that triggers a cascade of energy transfer within the Acceptor beads, resulting in emission with λmax at 615 nm. The intensity of the signal is directly proportional to the concentration of analyte present in the sample.
The AlphaLISA assay can be run in a 96- or 384-well detection plate (50 µL final). As described here, samples or standards are dispensed directly into the assay plate for the detection of the analyte of interest by AlphaLISA reagents. No washing steps are needed. The protocol can be further miniaturized or upscaled by simply resizing each addition volume proportionally.
| Application |
Protein Quantification
|
|---|---|
| Automation Compatible |
Yes
|
| Brand |
AlphaLISA
|
| Detection Modality |
Alpha
|
| Dynamic Range |
5 - 100,000 pg/mL
|
| Host Species |
Human
|
| Limit of Detection |
5 pg/mL
|
| Product Group |
Kit
|
| Sample Volume |
5 µL
|
| Shipping Conditions |
Shipped in Blue Ice
|
| Target |
Growth Hormone
|
| Target Class |
Biomarkers
|
| Target Species |
Human
|
| Technology |
Alpha
|
| Therapeutic Area |
Metabolic
|
| Unit Size |
500 assay points
|
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