| Field | Specification |
|---|---|
| Target | |
| Alternative names | Vascular endothelial growth factor receptor 1;VEGFR-1;2.7.10.1;Embryonic receptor kinase 2;Fms-like tyrosine kinase 1;FLT-1;Tyrosine-protein kinase receptor FLT;Flt1;Emrk2, Flt, Vegfr1; |
| Gene ID | |
| UniProt # | |
| Reactivity | |
| Applications | |
| Immunogen | Expression system for standard: NS0; Immunogen sequence: Y23-E759 |
| Expression system | |
| Expression region | |
| Assay type | |
| Sample type(s) | Cell Culture Supernatant, Serum |
| Sensitivity | |
| Detection range | |
| Assay time | |
| Storage | |
| Catalog no. (Mfr.) | |
| Main SKU |
Assay Principle
This sandwich ELISA quantifies mouse vascular endothelial growth factor receptor 1 (gene Flt1) in cell culture supernatants and serum. Strips are pre-coated with a capture antibody. After the sample is added, a biotinylated detection antibody binds the captured protein, and an avidin–biotin–peroxidase complex supplies the enzyme. TMB develops color in proportion to the bound target; the reaction is stopped and read at 450 nm, and concentrations are read from the standard curve.
Vascular endothelial growth factor receptor 1 (VEGFR-1, FLT1) is a receptor tyrosine kinase that binds VEGF-A, VEGF-B and placental growth factor. Its kinase signaling is weak, and a soluble form acts largely as a decoy that limits VEGF availability. FLT1 is studied in angiogenesis, macrophage recruitment, preeclampsia and vascular development.
Kit Components
| Anti-Mouse Flt1 Pre-coated 96-well strip microplate | 1 plate (96 wells) |
|---|---|
| Mouse Flt1 Standard | 2 vials, 10 ng/tube |
| Mouse Flt1 Biotinylated antibody (100x) | 100 µL |
| Avidin-Biotin-Peroxidase Complex (100x) | 100 µL |
| Sample Diluent | 30 mL |
| Antibody Diluent | 12 mL |
| Avidin-Biotin-Peroxidase Diluent | 12 mL |
| Color Developing Reagent (TMB) | 10 mL |
| Stop Solution | 10 mL |
| Wash Buffer (25x) | 20 mL |
| Adhesive plate sealers | 4 |
Also required (not supplied): microplate reader for 450 nm; incubator; automated plate washer (optional); precision pipettes for 0.5 µL through 1 mL volumes of aqueous solutions; multichannel pipettes (recommended for many samples); deionized or distilled water; 500 mL graduated cylinders; test tubes for dilution.
Kit components are not sold separately.
Performance Data
| Species | Mouse |
|---|---|
| Sample types | Cell culture supernatants and serum |
| Assay range | 156 pg/mL–10,000 pg/mL |
| Sensitivity | <10 pg/mL |
| Standard | Recombinant mouse Flt1 (Tyr23–Glu759), expressed in NS0 |
| Cross-reactivity | None detected against related proteins in supplier testing |
| Intra-assay CV | 4.2–7.0% (3 samples, n = 16 each) |
| Inter-assay CV | 5.9–7.8% (3 samples, n = 24 each) |
| Format | 96 wells, removable strips |
Sample dilution: start at 1:4. In the supplier’s tests, serum samples measured 1452–9631 pg/mL.
Example standard curve (OD450, pg/mL): 0 = 0.045; 156 = 0.127; 312 = 0.196; 625 = 0.345; 125000 = 0.663; 25000 = 1.141; 5000 = 1.909; 10000 = 2.521. Run a new standard curve on every plate.
Storage & Handling
Store at 4 °C for up to 6 months or −20 °C for up to 12 months. Avoid repeated freeze–thaw cycles. Ships on gel ice and tolerates up to 3 days at room temperature; freeze on arrival.
Safety
Sample data
| Concentration (pg/ml) | 0 | 156 | 312 | 625 | 1250 | 2500 | 5000 | 10000 |
| O.D. | 0.012 | 0.107 | 0.2 | 0.373 | 0.694 | 1.149 | 1.721 | 2.026 |
Intra/inter assay consistency
| Intra-Assay Precision | Inter-Assay Precision | |||||
|---|---|---|---|---|---|---|
| Sample | 1 | 2 | 3 | 1 | 2 | 3 |
| n | 16 | 16 | 16 | 24 | 24 | 24 |
| Mean (pg/ml) | 210 | 1914 | 6138 | 191 | 959 | 6693 |
| Standard deviation | 8.82 | 66.78 | 349.86 | 11.26 | 74.8 | 468.51 |
| CV (%) | 4.2% | 7% | 5.7% | 5.9% | 7.8% | 7% |
Kit components
Description|Quantity Pre-coated 96-well strip microplate|1 Standard|2 vials Biotinylated antibody (100x)|100ul Avidin-Biotin-Peroxidase Complex (100x)|100ul Sample Diluent|30ml Antibody Diluent|12ml Avidin-Biotin-Peroxidase Diluent|12ml Color Developing Reagent (TMB)|10ml Stop Solution|10ml Wash Buffer (25x)|20ml Adhesive plate sealers|4Materials required but not provided
- Microplate Reader capable of reading absorbance at 450nm.
- Incubator.
- Automated plate washer (optional).
- Pipettes and pipette tips capable of precisely dispensing 0.5 µl through 1 ml volumes of aqueous solutions.
- Multichannel pipettes are recommended for large amount of samples.
- Deionized or distilled water.
- 500ml graduated cylinders.
- Test tubes for dilution.
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Huaping Zhang et al. (2020) Ligand-installed anti-VEGF genomic nanocarriers for effective gene therapy of primary and metastatic tumors. Journal of Controlled Release. 10.1016/j.jconrel.2020.01.026
Shimin Tao et al. (2022) Maternal exposure to ambient PM2.5 causes fetal growth restriction via the inhibition of spiral artery remodeling in mice. Ecotoxicology and Environmental Safety. 10.1016/j.ecoenv.2022.113512
