[The influence of vascular endothelial growth factor and its receptor on the growth of laryngeal cancer cell].
The function of VEGF in laryngeal carcinoma was studied by observing either the expressions of VEGF and its receptor flk-1 in laryngeal carcinoma, or the effect of anti-VEGF antibody and anti-VEGF receptor antibody on the growth of human laryngeal cancer cell line HEP-2 in vitro. The expression of VEGF and flt in the specimen of laryngeal carcinoma were determined by standardized immunohistochemistry (Elite ABC method). Anti-VEGF antibody and anti-VEGF receptor antibody were also added at various concentrations to the culture medium, respectively, and the growth of HEP-2 was measured by MTT assay. The immunohistochemical staining showed that the expressions of VEGF and flt were detected both in carcinoma cells and endothelial cells. The growth of HEP-2 cell line in vitro was suppressed when adding various concentration of anti-VEGF antibody and anti-VEGF receptor antibody to the culture medium. The laryngeal cancer cells can secret VEGF and there exists VEGF-binding site on laryngeal cancer cell. Both blockading VEGF with anti-VEGF antibody and blockading VEGF-binding site with anti-VEGF receptor antibody could inhibit HEP-2 growth.
Deng
Z
Z
Fourth Military Medical University, Department of Otolaryngology, Xijing Hospital, Xi'an 710032.
Huang
W
W
Jin
Y
Y
D000906:Antibodies / Q000494:pharmacology; D002294:Carcinoma, Squamous Cell / Q000473:pathology*; D002455:Cell Division / Q000187:drug effects; D016228:Endothelial Growth Factors / Q000032:analysis / Q000276:immunology*; D006801:Humans; D007822:Laryngeal Neoplasms / Q000473:pathology*; D008222:Lymphokines / Q000032:analysis / Q000276:immunology*; D020794:Receptor Protein-Tyrosine Kinases / Q000032:analysis / Q000276:immunology*; D017978:Receptors, Growth Factor / Q000032:analysis / Q000276:immunology*; D040262:Receptors, Vascular Endothelial Growth Factor; D014407:Tumor Cells, Cultured; D042461:Vascular Endothelial Growth Factor A; D042442:Vascular Endothelial Growth Factors
D000906:Antibodies; D016228:Endothelial Growth Factors; D008222:Lymphokines; D017978:Receptors, Growth Factor; D042461:Vascular Endothelial Growth Factor A; D042442:Vascular Endothelial Growth Factors; D020794:Receptor Protein-Tyrosine Kinases; D040262:Receptors, Vascular Endothelial Growth Factor