Dual inhibition of the epidermal growth factor and vascular endothelial growth factor phosphorylation for antivascular therapy of human prostate cancer in the prostate of nude mice
Autor: | Premal H. Thaker, Junquin He, Sertac Yazici, Isaiah J. Fidler, Dominic Fan, Kenji Yokoi, Sun Jin Kim, J. E. Busby |
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Rok vydání: | 2005 |
Předmět: |
Male
medicine.medical_specialty Paclitaxel Urology Mice Nude Apoptosis Cell Growth Processes Metastasis Capillary Permeability Prostate cancer chemistry.chemical_compound Mice Epidermal growth factor Internal medicine Cell Line Tumor medicine In Situ Nick-End Labeling Animals Humans AEE788 Epidermal growth factor receptor Phosphorylation Protein Kinase Inhibitors Tumor microenvironment biology Neovascularization Pathologic business.industry Cancer Prostatic Neoplasms medicine.disease Antineoplastic Agents Phytogenic Xenograft Model Antitumor Assays Vascular endothelial growth factor ErbB Receptors Platelet Endothelial Cell Adhesion Molecule-1 Endocrinology Receptors Vascular Endothelial Growth Factor Oncology chemistry Microscopy Fluorescence Purines Cancer research biology.protein business |
Zdroj: | The Prostate. 65(3) |
ISSN: | 0270-4137 |
Popis: | BACKGROUND Androgen-independent prostate cancer (PCa) may be susceptible to modulation of the tumor microenvironment. We determined whether a dual tyrosine kinase inhibitor (AEE788) of the epidermal growth factor receptor (EGF-R) and vascular endothelial growth factor receptor (VEGF-R) combined with chemotherapy can produce therapy of human PCa in nude mice. METHODS PC-3MM2 human PCa cells were injected into the prostate of nude mice. Three days later, the mice were randomized into four groups: saline control, paclitaxel, AEE788, and AEE788 and paclitaxel. The mice were treated for 5 weeks and necropsied. Tumor incidence, weight, and incidence of lymph node metastasis were recorded. Tumor tissue was analyzed immunohistochemically. RESULTS Treatment of mice with AEE788 or AEE788 plus paclitaxel significantly decreased tumor incidence, total tumor weight, and incidence of lymph node metastasis. AEE788 treatment alone or in combination with paclitaxel inhibited the phosphorylation of EGF-R and VEGF-R on tumor cells and tumor-associated endothelial cells. Therapeutic efficacy correlated with an increase in apoptosis of tumor cells and tumor-associated endothelial cells. CONCLUSION Blockade of EGF-R and VEGF-R signaling pathways coupled with chemotherapy suppressed the progressive growth and metastasis of human PCa cells growing orthotopically in nude mice. © 2005 Wiley-Liss, Inc. |
Databáze: | OpenAIRE |
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