Human Vascular endothelial growth factor receptor 1(VEGFR-1, FLT-1) is a member of the the class III subfamily of receptor tyrosine kinases (RTKs) and Tyr protein kinase family and CSF-1/PDGF receptor subfamily. VEGFR-1 plays an essential role as a negative regulator of embryonic angiogenesis by inhibiting excessive proliferation of endothelial cells and promote endothelial cell proliferation, survival and angiogenesis in adulthood. VEGFR-1 can also promote PGF-mediated proliferation of endothelial cells, proliferation of some types of cancer cells, but does not promote proliferation of normal fibroblasts (in vitro). VEGFR-1 is widely expressed in human tissues including normal lung, placenta, liver, kidney, heart and brain tissues. It is specifically expressed in most of the vascular endothelial cellsand peripheral blood monocytes.
The target gene encoding Ser27-Asn756 is expressed with a human IgG1 Fc tag at the C-terminus.
Immobilized Human VEGF165 at 10μg/ml can bind Human VEGFR1-Fc, the ED50 of VEGFR1-Fc is 36.4 ng/ml.
Accession: P17948
Apparent Molecular Weight: 150-190 KDa, reducing conditions
Endotoxin < 1 EU/µg
Lyophilized from a 0.2 μm filtered solution of 20mM PB, 150mM NaCl, 5%Trehalose, 5%Mannitol, 0.01%Tween80, pH7.0.
| Form | Lyophilized powder |
| Solubility (25°C) | Reconstitute the lyophilized powder in ddH2O to 100 μg/ml. |
| Storage | Stored at ≤-20°C, stable for one year after receipt. Reconstituted protein solution can be stored at 2-8°C for 2-7 days and at -20°C for 3 months. |
| Species | Mouse | Rat | Rabbit | Guinea pig | Hamster | Dog |
| Weight (kg) | 0.02 | 0.15 | 1.8 | 0.4 | 0.08 | 10 |
| Body Surface Area (m2) | 0.007 | 0.025 | 0.15 | 0.05 | 0.02 | 0.5 |
| Km factor | 3 | 6 | 12 | 8 | 5 | 20 |
| Animal A (mg/kg) = Animal B (mg/kg) multiplied by | Animal B Km |
| Animal A Km |
For example, to modify the dose of Compound A used for a mouse (20 mg/kg) to a dose based on the BSA for a rat, multiply 20 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for Compound A of 10 mg/kg.
[3] Salman Sarwar, et al. Dev Ophthalmol. Fusion Proteins: Aflibercept (VEGF Trap-Eye)
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