دورية أكاديمية
Discovery of Fully Human Anti-MET Monoclonal Antibodies with Antitumor Activity against Colon Cancer Tumor Models In Vivo
| العنوان: | Discovery of Fully Human Anti-MET Monoclonal Antibodies with Antitumor Activity against Colon Cancer Tumor Models In Vivo |
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| المؤلفون: | Edward Htun van der Horst, Lawrence Chinn, Min Wang, Timothy Velilla, Hoang Tran, Yarrow Madrona, Andrew Lam, May Ji, Timothy C. Hoey, Aaron K. Sato |
| المصدر: | Neoplasia: An International Journal for Oncology Research, Vol 11, Iss 4, Pp 355-364 (2009) |
| بيانات النشر: | Elsevier, 2009. |
| سنة النشر: | 2009 |
| المجموعة: | LCC:Neoplasms. Tumors. Oncology. Including cancer and carcinogens |
| مصطلحات موضوعية: | Neoplasms. Tumors. Oncology. Including cancer and carcinogens, RC254-282 |
| الوصف: | The receptor tyrosine kinase MET is a major component controlling the invasive growth program in embryonic development and in invasive malignancies. The discovery of therapeutic antibodies against MET has been difficult, and antibodies that compete with hepatocyte growth factor (HGF) act as agonists. By applying phage technology and cell-based panning strategies, we discovered two fully human antibodies against MET (R13 and R28), which synergistically inhibit HGF binding to MET and elicit antibody-dependent cellular cytotoxicity. Cell-based phosphorylation assays demonstrate that R13 and R28 abrogate HGF-induced activation of MET, AKT1, ERK1/2, and HGF-induced migration and proliferation. FACS experiments suggest that the inhibitory effect is mediated by “locking” MET receptor in a state with R13, which then increases avidity of R28 for the extracellular domain of MET, thus blocking HGF binding without activating the receptor. In vivo studies demonstrate that the combination of R13/28 significantly inhibited tumor growth in various colon tumor xenograft models. Inhibition of tumor growth was associated with induction of hypoxia. Global gene expression analysis shows that inhibition of HGF/MET pathway significantly upregulated the tumor suppressors KLF6, CEACAM1, and BMP2, the negative regulator of phosphatidylinositol-3-OH-kinase PIK3IP1, and significantly suppressed SCF and SERPINE2, both enhancers of proliferation and invasiveness. Moreover, in an experimental metastasis model, R13/28 increased survival by preventing the recurrence of otherwise lethal lung metastases. Taken together, these results underscore the utility of a dual-antibody approach for targeting MET and possibly other receptor tyrosine kinases. Our approach could be expanded to drug discovery efforts against other cell surface proteins. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1476-5586 1522-8002 |
| Relation: | http://www.sciencedirect.com/science/article/pii/S147655860980064X; https://doaj.org/toc/1476-5586; https://doaj.org/toc/1522-8002 |
| DOI: | 10.1593/neo.81536 |
| URL الوصول: | https://doaj.org/article/6b20f7361f4546d4aaef41486f071992 |
| رقم الأكسشن: | edsdoj.6b20f7361f4546d4aaef41486f071992 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 14765586 15228002 |
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| DOI: | 10.1593/neo.81536 |