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• W2154065963 endingPage "M111.009449" @default.
• W2154065963 startingPage "M111.009449" @default.
• W2154065963 abstract "Of the most important clinical needs for bladder cancer (BC) management is the identification of biomarkers for disease aggressiveness. Urine is a gold mine for biomarker discovery, nevertheless, with multiple proteins being in low amounts, urine proteomics becomes challenging. In the present study we applied a fractionation strategy of urinary proteins based on the use of immobilized metal affinity chromatography for the discovery of biomarkers for aggressive BC. Urine samples from patients with non invasive (two pools) and invasive (two pools) BC were subjected to immobilized metal affinity chromatography fractionation and eluted proteins analyzed by 1D-SDS-PAGE, band excision and liquid chromatography tandem MS. Among the identified proteins, multiple corresponded to proteins with affinity for metals and/or reported to be phosphorylated and included proteins with demonstrated association with BC such as MMP9, fibrinogen forms, and clusterin. In agreement to the immobilized metal affinity chromatography results, aminopeptidase N, profilin 1, and myeloblastin were further found to be differentially expressed in urine from patients with invasive compared with non invasive BC and benign controls, by Western blot or Elisa analysis, nevertheless exhibiting high interindividual variability. By tissue microarray analysis, profilin 1 was found to have a marked decrease of expression in the epithelial cells of the invasive (T2+) versus high risk non invasive (T1G3) tumors with occasional expression in stroma; importantly, this pattern strongly correlated with poor prognosis and increased mortality. The functional relevance of profilin 1 was investigated in the T24 BC cells where blockage of the protein by the use of antibodies resulted in decreased cell motility with concomitant decrease in actin polymerization. Collectively, our study involves the application of a fractionation method of urinary proteins and as one main result of this analysis reveals the association of profilin 1 with BC paving the way for its further investigation in BC stratification." @default.
• W2154065963 created "2016-06-24" @default.
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• W2154065963 date "2012-04-01" @default.
• W2154065963 modified "2023-10-10" @default.
• W2154065963 title "Profilin 1 is a Potential Biomarker for Bladder Cancer Aggressiveness" @default.
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• W2154065963 doi "https://doi.org/10.1074/mcp.m111.009449" @default.
• W2154065963 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/3322560" @default.
• W2154065963 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/22159600" @default.
• W2154065963 hasPublicationYear "2012" @default.
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