膜杰作
Star Staining
产品描述（Product Details）
| Assay Type | Sandwich-ELISA |
| Analyte | Laminin 521 |
| Format | 96T |
| Reactivity | Human |
| Regulatory Status | RUO |
| Sensitivity | ＜25 pg/mL |
| Standard Curve Range | 25 pg/mL-800 pg/mL |
| Assay Time | 3 hr 20 min |
| Suitable Sample Type | For the detection and quantitative determination of Laminin 521 in human serum and cell culture supernates. |
| Sample volume | 100 uL |
背景（Background）
Human Laminin 521 Kit is based on ELISA sandwich method and designed to measure human Laminin 521 levels in cell culture supernates, serum, and plasma. It contains recombinant human Laminin 521 and a pair of antibodies against the recombinant human Laminin 521, which are provided by ACROBiosystems. Results are obtained by four parameter logistic curve that were parallel to the standard curves obtained. The verification results indicate that this kit can be used for the quantitative determination of GMP human Laminin 521 (ACROBiosystems, cat#GMP-LA5H24) concentrations. The specificity has been verified.
应用说明（Application）
The kit is developed for the detection and quantitative determination of Laminin in human serum and cell culture supernates.
It is for research use only.
重构方法（Reconstitution）
Please see Certificate of Analysis for details of reconstitution instruction and specific concentration.
存储（Storage）
1. Unopened kit should be stored at 2℃-8℃ upon receiving.
2. Find the expiration date on the outside packaging and do not use reagents past their expiration date.
3. The opened kit should be stored per components table. The shelf life is 30 days from the date of opening.
组分（Materials Provided）
| ID | Components | Size |
| RES040-C01 | Pre-coated Anti-Laminin 521 Antibody Microplate | 1 plate |
| RES040-C02 | Human Laminin 521 Standard | 20 μg |
| RES040-C03 | Biotin-Anti-Laminin Antibody | 20 μg |
| RES040-C04 | Streptavidin-HRP | 50 μL |
| RES040-C05 | 10×Washing Buffer | 50 mL |
| RES040-C06 | 2×Dilution Buffer | 50 mL |
| RES040-C07 | Substrate Solution | 12 mL |
| RES040-C08 | Stop Solution | 7 mL |
原理（Assay Principles）
This assay kit employs a standard sandwich-ELISA format, providing a rapid detection of Human Laminin 521. The kit consists of Pre-coated Anti-Laminin 521 Antibody Microplate and Human Laminin 521 Standard and Biotin-Anti-Laminin Antibody and Streptavidin-HRP and buffers.
Your experiment will include 6 simple steps:
a) Bring all reagents to room temperature(20℃-25℃) before use.
b) Add your sample to the plate and take the Human Laminin 521 as standard. The samples and standard are diluted by Dilution Buffer.
c) Wash the plate and add the Biotin-Anti-Laminin Antibody diluted by Dilution Buffer to the plate.
d) Wash the plate and add the Streptavidin-HRP diluted by Dilution Buffer to the plate.
e) Wash the plate and add TMB.
f) Stop the substrate reaction by adding diluted acid. Absorbance (OD) is calculated by the absorbance at 450 nm minus the absorbance at 630 nm to remove background disturbance before statistical analysis. The OD Value reflects the amount of bound protein.
典型数据-Typical Data Please refer to DS document for the assay protocol.
For each experiment, a standard curve needs to be set for each micro-plate, and the specific OD value may vary depending on different laboratories, testers, or equipments. The following example data is for reference only.
验证（Validation）
稀释线性（Dilution Linearity）
To assess the linearity of the assay, samples spiked with high concentrations of Laminin 521 were serially diluted with calibrator diluent to produce samples with values within the dynamic range of the assay.
批内差异（Intra-Assay Statistics）
Three samples of known concentration were tested ten times on one plate to assess intra-assay precision.
批间差异（Inter-Assay Statistics）
Three samples of known concentration were tested in three separate assays to assess inter-assay precision.
回收率（Recovery）
Three Laminin 521 with different concentrations were tested to calculate the recovery rate.
背景（Background）：Laminin 521
GMP Human Laminin 521 Protein (GMP Laminin 521) is a recombinant human protein that provides a defined surface for in vitro feeder-free culture of multiple human pluripotent stem cells (PSCs). GMP Laminin 521 has been proven to maintain normal growth characteristics and stemness in multiple PSC lines without simultaneous differentiation, which includes ESC, iPSC, MSC, etc. In addition, GMP Laminin 521 has been demonstrated to support PSC growth for >10 passages without any signs of karyotypic abnormalities and to maintain the ability of PSCs to differentiate into all three germ line lineages.
