Human NG2/MCSP/CSPG4 enzyme-linked immunoassay kit(one step)
| Specification | 96 Test |
|---|---|
| Sensitivity | 0.004 ng/ml (50 μl)；0.21 ng/ml (10 μl)； |
| Standard Curve Range | 0.69~500 ng/ml |
| Standard Curve Gradient | 7 Points/3 Folds |
| Number of Incubations | 2 |
| Sample Volume | 50 μl/10 μl |
| Type | Fully Ready-to-Use |
| Operation Duration | 60min |
| ng/ml | O.D. | Average | Corrected | |
|---|---|---|---|---|
| 0.00 | 0.0144 | 0.0150 | 0.0147 | |
| 0.69 | 0.0266 | 0.0269 | 0.0268 | 0.0121 |
| 2.06 | 0.0461 | 0.0456 | 0.0459 | 0.0312 |
| 6.17 | 0.1073 | 0.1186 | 0.1130 | 0.0983 |
| 18.52 | 0.2726 | 0.3004 | 0.2865 | 0.2718 |
| 55.56 | 0.8309 | 0.8644 | 0.8477 | 0.8330 |
| 166.67 | 2.0830 | 2.1660 | 2.1245 | 2.1098 |
| 500.00 | 3.8140 | 3.9010 | 3.8575 | 3.8428 |
Precision
| Intra-assay Precision | Inter-assay Precision | |||||
| Sample Number | S1 | S2 | S3 | S1 | S2 | S3 |
| 22 | 22 | 22 | 6 | 6 | 6 | |
| Average(ng/ml) | 1.7 | 8.6 | 30.9 | 1.6 | 8.9 | 31.6 |
| Standard Deviation | 0.1 | 0.4 | 2.0 | 0.1 | 0.6 | 1.8 |
| Coefficient of Variation(%) | 5.7 | 4.4 | 6.5 | 6.0 | 6.8 | 5.7 |
Intra-assay Precision (Precision within an assay) Three samples of known concentration were tested twenty times on one plate to assess intra-assay precision.
Inter-assay Precision (Precision between assays) Three samples of known concentration were tested six times on one plate to assess intra-assay precision.
Spike Recovery
The spike recovery was evaluated by spiking 3 levels of human NG2/MCSP/CSPG4 into health human serum sample. The un-spiked serum was used as blank in this experiment.
The recovery ranged from 99% to 117% with an overall mean recovery of 108%.
Sample Values
| Sample Matrix | Sample Evaluated | Range (ng/ml) | Detectable (%) | Mean of Detectable (ng/ml) |
|---|---|---|---|---|
| Serum | 30 | 59.50-274.06 | 100 | 129.52 |
Serum/Plasma – Thirty samples from apparently healthy volunteers were evaluated for the presence of NG2/MCSP/CSPG4 in this assay. No medical histories were available for the donors.
Product Data Sheet
Background: NG2/MCSP/CSPG4
NG2, also known as CSPG4, MCSP, and AN2, is a 400-500 kDa transmembrane chondroitin sulfate proteoglycan (CSPG) with a protein core of approximately 300 kDa. The extracellular region can be proteolytically shed from the cell surface. Mature human NG2 consists of a 2195 amino acid (aa) extracellular domain (ECD), a 21 aa transmembrane segment, and a 77 aa cytoplasmic domain. Within aa 1583-2224, human NG2/CSPG4 shares 83% aa sequence identity with mouse and rat CSPG4. NG2 binds to the extracellular matrix proteins Laminin, Tenascin, and Collagens II, V, and VI as well as to the growth factors FGF-2 and PDGF-AA. NG2 is expressed on glial cell progenitors known as O2A cells or NG2 glia. These cells are neuronally responsive and differentiate primarily into oligodendrocytes but also into astrocytes. NG2 associates with PDGF R alpha and the AMPA R subunit GluR2. It is up-regulated on microglial cells during inflammation and contributes to the induction of inflammatory mediators. Various CSPGs in the brain inhibit neurite outgrowth through interactions with Nogo Receptor/NgR1 and NgR3. This recombinant protein product corresponds to the last 5 CSPG repeats, a region which can independently inhibit neurite outgrowth. NG2 is also expressed on vascular mural cells and capillaries. It promotes vascular endothelial cell (EC) migration and angiogenesis through interactions with Galectin-3 and Integrin alpha 3 beta 1 on EC, Plasminogen, and Angiostatin. NG2 is also expressed on a variety of tumors where it contributes to tumor cell adhesion, motility, and invasion.
