Novel antibodies directed against the extracellular domain of the human VEGF-receptor type II.
Vascular endothelial cell growth factor (VEGF) plays a pivotal role in the regulation of angiogenesis by binding to its cognate receptor molecule type II (VEGFr-II, KDR). VEGFr-II is an endothelial cell-specific transmembrane tyrosine kinase important for vascular endothelial cell development and differentiation during embryogenesis, angiogenic processes under physiological conditions, and various diseases. An increasing number of reports indicate that VEGF/VEGFr-II also play a fundamental role for tumor angiogenesis. We present the generation and in vitro characterization of the monoclonal antibodies 2-7-9 and 2-10-1. Both antibodies are highly specific for VEGFr-II as demonstrated by Western blotting and immunoprecipitation. MAbs 2-10-1 and 2-7-9 bind to a disulphide bridge-stabilized epitope within domains 6 and 7 of the human VEGFr-II with an affinity of 8 and 80 nM, respectively. Furthermore, the antibodies are suitable for immunohistochemistry and ELISA techniques. Because both antibodies recognize their epitope on living cells, they also have the potential for drug targeting and diagnostic purposes.
Menrad
A
A
Research Laboratories of Schering AG, Berlin, Germany.
Thierauch
K H
KH
Martiny-Baron
G
G
Siemeister
G
G
Schirner
M
M
Schneider
M R
MR
D000818:Animals; D000911:Antibodies, Monoclonal / Q000096:biosynthesis* / Q000737:chemistry / Q000276:immunology; D002478:Cells, Cultured; D018604:Epitope Mapping; D005260:Female; D006801:Humans; D051379:Mice; D008807:Mice, Inbred BALB C; D018919:Neovascularization, Physiologic; D011487:Protein Conformation; D020794:Receptor Protein-Tyrosine Kinases / Q000276:immunology*; D017978:Receptors, Growth Factor / Q000276:immunology*; D011975:Receptors, Mitogen / Q000276:immunology*; D040262:Receptors, Vascular Endothelial Growth Factor; D011994:Recombinant Proteins / Q000737:chemistry / Q000276:immunology
D000911:Antibodies, Monoclonal; D017978:Receptors, Growth Factor; D011975:Receptors, Mitogen; D011994:Recombinant Proteins; D020794:Receptor Protein-Tyrosine Kinases; D040262:Receptors, Vascular Endothelial Growth Factor