Identification of proteins associated to multi-drug resistance in LoVo human colon cancer cells
| Autor: | Valli De Re, Maria Paola Simula, Franca Sartor, Michele Visentin, Alessandra Petrucco, Giuseppe Toffoli |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Genetics
Cancer Research Oncogene Proteome Difference gel electrophoresis Cell cycle Biology Proteomics Molecular medicine Drug Resistance Multiple Neoplasm Proteins Blot Oncology Peptide mass fingerprinting Drug Resistance Neoplasm Cell Line Tumor Colonic Neoplasms biology.protein Cancer research Biomarkers Tumor Humans Electrophoresis Gel Two-Dimensional P-glycoprotein |
| Zdroj: | International journal of oncology. 34(5) |
| ISSN: | 1019-6439 |
| Popis: | Multi-drug resistance (MDR) limits the effectiveness of chemotherapy. P-glycoprotein encoded by the MDR1 gene, is known to be implicated in MDR phenotype, but other factors could be determinant in MDR. The aim of this study was to investigate new molecular factors potentially associated with the MDR phenotype using a proteomic approach. Two dimensional fluorescence difference gel electrophoresis (2D-DIGE) and MALDI-TOF peptide mass fingerprinting were used to determine differentially expressed proteins between LoVo human colon carcinoma cell line and one of its MDR sublines (LoVo-R1). Thirty-four differentially expressed proteins were identified. They were classified into five groups based on their biological functions: i) proteins involved in energy request pathways, ii) in detoxification pathways, iii) in cell survival activity, iv) in drug transport and v) in chaperone functions. Among these proteins, endothelin 1 and proteasome subunit beta2 regulations were validated by immunofluorescence and Western blotting, respectively, showing complete consistency with 2D-DIGE results. In conclusion, the proteomic approach indicates that multiple mechanisms are simultaneously involved in MDR. These might be useful in the search for new forms of interventional therapeutic approaches for MDR reversal. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|