Abstract
cDNA encoding VEGF and Ig-like extracellular domains 2-4 of VEGFR-1 (sFlt-12-4) were cloned into prokaryotic expression vectors pET32a and pQE60. Recombinant proteins were purified (metal affinity chromatography) and renatured. Chemiluminescent study for the interaction of recombinant VEGF and sFlt-12-4 showed that biotinylated VEGF specifically binds to the polystyrene-immobilized receptor extracellular fragment. Biotinylated recombinant sFlt-1 interacts with immobilized VEGF. Analysis of the interaction of immobilized recombinant VEGFR-1 and VEGF with C6 glioma cells labeled with CFDA-SE (vital fluorescent dye) showed that recombinant VEGFR-1 also binds to native membrane-associated VEGF. Recombinant VEGF was shown to bind to specific receptors expressed on the surface of C6 glioma cells. Functional activity of these proteins was confirmed by ligand-receptor assay for VEGF and VEGFR-1 (sFlt-1) and quantitative chemiluminescent detection.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 707-711 |
| Number of pages | 5 |
| Journal | Bulletin of Experimental Biology and Medicine |
| Volume | 152 |
| Issue number | 6 |
| DOIs | |
| State | Published - Apr 2012 |
| Externally published | Yes |
Keywords
- Ligand-receptor assay
- Vascular endothelial growth factor
- Vascular endothelial growth factor receptor
ASJC Scopus subject areas
- General Biochemistry, Genetics and Molecular Biology
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