1. Identification and Functional Characterization of pVHL-Dependent Cell Surface Proteins in Renal Cell Carcinoma
- Author
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Van-Duc Luu, Barbara Ingold-Heppner, Daniel P. Stiehl, Niklaus Fankhauser, Anna M. Nowicka, Igor Cima, Holger Moch, Tullio Sulser, Wilhelm Krek, Damaris Bausch-Fluck, Gunther Boysen, Bernd Wollscheid, Claudio R. Thoma, Thomas Hermanns, Adriana von Teichman, Roland H. Wenger, Peter Krek, University of Zurich, and Moch, Holger
- Subjects
Proteomics ,Cancer Research ,Cell ,610 Medicine & health ,urologic and male genital diseases ,lcsh:RC254-282 ,Cell Line ,10052 Institute of Physiology ,Stable isotope labeling by amino acids in cell culture ,10049 Institute of Pathology and Molecular Pathology ,Transcriptional regulation ,medicine ,Basic Helix-Loop-Helix Transcription Factors ,Humans ,1306 Cancer Research ,Carcinoma, Renal Cell ,neoplasms ,Glycoproteins ,chemistry.chemical_classification ,Papillary renal cell carcinomas ,Chemistry ,Membrane Proteins ,Reproducibility of Results ,lcsh:Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,medicine.disease ,Molecular biology ,Kidney Neoplasms ,female genital diseases and pregnancy complications ,Gene Expression Regulation, Neoplastic ,Clear cell renal cell carcinoma ,10062 Urological Clinic ,medicine.anatomical_structure ,10022 Division of Surgical Research ,Cell culture ,Von Hippel-Lindau Tumor Suppressor Protein ,Cancer research ,570 Life sciences ,biology ,Neprilysin ,Glycoprotein ,Research Article - Abstract
The identification of cell surface accessible biomarkers enabling diagnosis, disease monitoring, and treatment of renalcell carcinoma (RCC) is as challenging as the biology and progression of RCC is unpredictable. A hallmark of most RCCis the loss-of-function of the von Hippel–Lindau (pVHL) protein by mutation of its gene (VHL). Using the cell surfacecapturing (CSC) technology, we screened and identified cell surface N-glycoproteins in pVHL-negative and positive786-O cells. One hundred six cell surface N-glycoproteins were identified. Stable isotope labeling with amino acidsin cell culture–based quantification of the CSC screen revealed 23 N-glycoproteins whose abundance seemed tochange in a pVHL-dependent manner. Targeted validation experiments using transcriptional profiling of primary RCCsamples revealed that nine glycoproteins, including CD10 and AXL, could be directly linked to pVHL-mediated transcrip-tional regulation. Subsequent human tumor tissue analysis of these cell surface candidate markers showed a correla-tion between epithelial AXL expression and aggressive tumor phenotype, indicating that pVHL-dependent regulation ofglycoproteins may influence the biologic behavior of RCC. Functional characterization of the metalloprotease CD10 incell invasion assays demonstrated a diminished penetrating behavior of pVHL-negative 786-O cells on treatment withthe CD10-specific inhibitor thiorphan. Our proteomic surfaceome screening approach in combination with transcrip-tional profiling and functional validation suggests pVHL-dependent cell surface glycoproteins as potential diagnosticmarkers for therapeutic targeting and RCC patient monitoring., Neoplasia, 14 (6), ISSN:1522-8002, ISSN:1476-5586
- Published
- 2012
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