Abstract: An efficient method for identifying important cancer biomarkers and identifying progression of bladder cancer using pro-u-PA as a clinical tool is provided. Searching for biomarkers critical for bladder carcinoma diagnosis and prognosis, secreted proteomes of highly malignant U1 and pre-malignant U4 cell lines are first analyzed. Proteins in the cultured media of the U1 and U4 cell-lines were systematically examined by SDS-PAGE combined with MALDI-TOF mass spectrometry. Expression of pro-u-plasminogen activator (pro-u-PA) was confirmed by Western blot analysis and further evaluated. A statistically significant relationship between the low level and absence of pro-u-PA in urine with high stages and grades of the tumor samples was established. Constitutive expression of Ras dominant negative protein led to increased expression of pro-u-PA in cultured media, indicating the loss of pro-u-PA is associated with oncogenic transformation.

Abstract: An efficient method for identifying important cancer biomarkers and identifying progression of bladder cancer using pro-u-PA as a clinical tool is provided. Searching for biomarkers critical for bladder carcinoma diagnosis and prognosis, secreted proteomes of highly malignant U1 and pre-malignant U4 cell lines are first analyzed. Proteins in the cultured media of the U1 and U4 cell-lines were systematically examined by SDS-PAGE combined with MALDI-TOF mass spectrometry. Expression of pro-u-plasminogen activator (pro-u-PA) was confirmed by Western blot analysis and further evaluated. A statistically significant relationship between the low level and absence of pro-u-PA in urine with high stages and grades of the tumor samples was established. Constitutive expression of Ras dominant negative protein led to increased expression of pro-u-PA in cultured media, indicating the loss of pro-u-PA is associated with oncogenic transformation.

Abstract: An efficient method for identifying important cancer biomarkers and identifying progression of bladder cancer using pro-u-PA as a clinical tool is provided. Searching for biomarkers critical for bladder carcinoma diagnosis and prognosis, secreted proteomes of highly malignant U1 and pre-malignant U4 cell lines are first analyzed. Proteins in the cultured media of the U1 and U4 cell-lines were systematically examined by SDS-PAGE combined with MALDI-TOF mass spectrometry. Expression of pro-u-plasminogen activator (pro-u-PA) was confirmed by Western blot analysis and further evaluated. A statistically significant relationship between the low level and absence of pro-u-PA in urine with high stages and grades of the tumor samples was established. Constitutive expression of Ras dominant negative protein led to increased expression of pro-u-PA in cultured media, indicating the loss of pro-u-PA is associated with oncogenic transformation.

Abstract: An efficient method for identifying important cancer biomarkers and identifying progression of bladder cancer using pro-u-PA as a clinical tool is provided. Searching for biomarkers critical for bladder carcinoma diagnosis and prognosis, secreted proteomes of highly malignant U1 and pre-malignant U4 cell lines are first analyzed. Proteins in the cultured media of the U1 and U4 cell-lines were systematically examined by SDS-PAGE combined with MALDI-TOF mass spectrometry. Expression of pro-u-plasminogen activator (pro-u-PA) was confirmed by Western blot analysis and further evaluated. A statistically significant relationship between the low level and absence of pro-u-PA in urine with high stages and grades of the tumor samples was established. Constitutive expression of Ras dominant negative protein led to increased expression of pro-u-PA in cultured media, indicating the loss of pro-u-PA is associated with oncogenic transformation.

Abstract: The Rev peptide that binds to nucleophosmin/B23 with the highest affinity exhibits the greatest cytotoxicity on Ras-3T3 cells and inhibits tumor growth most effectively in nude mice. The efficiency of colony formation in soft agar of Ras-3T3 cells is significantly inhibited by treatment with Rev peptide. In addition, Rev peptide can potentiate the doxorubicin-induced decrease of cellular viability in U1 bladder cancer cells and inhibition of tumor growth in nude mice. Treatment of Rev peptide increases protein expression and transcriptional activity of p53 and inhibits the nucleophosmin/B23-mediated PCNA promoter activation. Peptides having high affinity of binding to molecular targets such as nucleophosmin/B23 represent a useful approach to anti-cancer biotherapeutics.

Abstract: Analysis of nucleophosmin/B23 mRNA expression provides sensitive, quantitative, rapid and specific analysis to detect cancer cells in tissues for predicting and monitoring recurrence and high stage bladder carcinoma. Over-expression of nucleophosmin/B23 mRNA is a useful prognostic marker for disease recurrence and high stages in bladder carcinoma. The use of such prognostic marker for the prediction of bladder tumor recurrence and high stages facilitates more effective management of the cancer.

Abstract: Analysis of nucleophosmin/B23 mRNA expression provides sensitive, quantitative, rapid and specific analysis to detect cancer cells in tissues for predicting and monitoring recurrence and high stage bladder carcinoma. Over-expression of nucleophosmin/B23 mRNA is a useful prognostic marker for disease recurrence and high stages in bladder carcinoma. The use of such prognostic marker for the prediction of bladder tumor recurrence and high stages facilitates more effective management of the cancer.