Catalog No.
KDB95602
Description
PRINCIPLE OF THE ASSAY This assay employs the quantitative competitive enzyme immunoassay technique. Recombinant Human IL1B has been pre-coated onto a microplate. Standards or samples are premixed with biotin-labeled antibody and then pipetted into the wells. Gevokizumab in the sample competitively binds to the pre-coated protein with biotin-labeled Gevokizumab. After washing away any unbound substances, Streptavidin-HRP is added to the wells. Following a wash to remove any unbound enzyme reagent, a substrate solution is added to the wells and color develops in inversely proportion to the amount of Gevokizumab bound in the initial step. The color development is stopped and the intensity of the color is measured.
Applications
Used for the quantitative determination of Gevokizumab concentration in serum and plasma.
Detection method
Colorimetric
Sample type
Plasma, Serum
Assay type
Quantitative
Range
31.25 - 2,000 ng/mL
Sensitivity
27.51 ng/mL
Precision
Intra-Assay Precision (Precision within an assay): <20%
Three samples of known concentration were tested sixteen times on one plate to assess intra-assay precision.
Inter-Assay Precision (Precision between assays): <20%
Three samples of known concentration were tested in twenty four separate assays to assess inter-assay precision.
|
|
Intra-Assay Precision |
Inter-Assay Precision |
||||
|
Sample |
1 |
2 |
3 |
1 |
2 |
3 |
|
n |
16 |
16 |
16 |
24 |
24 |
24 |
|
Mean (ng/mL) |
768.3 |
192.7 |
90.0 |
998.8 |
217.3 |
114.9 |
|
Standard deviation |
49.4 |
11.9 |
5.4 |
141.9 |
43.8 |
21.7 |
|
CV (%) |
6.4 |
6.2 |
6.0 |
14.2 |
20.1 |
18.9 |
Recovery
80-120%
Shipping
2-8 ℃
Stability and Storage
When the kit was stored at the recommended temperature for 6 months, the signal intensity decreased by less than 20%.
Alternative Names
XOMA 052, CAS: 1129435-60-4
Background
Gevokizumab (XOMA-052) was developed by XOMA Ltd., USA and represents a humanized IgG2kappa antibody. XOMA-052 binds to IL-1β with high affinity leading to reduced binding affinity of the cytokine to its signaling receptor. Since gevokizumab does not influence the affinity of IL-1β for its decoy and soluble inhibitory receptors the endogenous regulatory mechanisms involving the clearance and inhibitory receptors also contribute to the effect of the antibody [6]. In August 2012 the FDA granted orphan drug status to gevokizumab for the treatment of noninfectious intermediate uveitis, posterior uveitis, panuveitis, and chronic noninfectious anterior uveitis. A single intravenous injection of the substance was also shown to lead to complete resolution of intraocular inflammation in Behçet’s uveitis.
For research use only. Not for human or drug use.
