Differential proteomic analysis of nuclear matrix in muscle-invasive bladder cancer: Potential to improve diagnosis and prognosis

Paola Barboro, Alessandra Rubagotti, Paola Orecchia, Bruno Spina, Mauro Truini, Erica Repaci, Giorgio Carmignani, Andrea Romagnoli, Carlo Introini, Francesco Boccardo, Barbara Carnemolla, Cecilia Balbi

Research output: Contribution to journalArticlepeer-review


Introduction: Although several molecular markers for bladder cancer have been identified, at present little information on prognostic biomarkers is available in the literature. Prognostication of this tumor is largely based on clinicopathological characteristics. Our aim was to identify nuclear matrix (NM) proteins that might serve to better characterize the phenotype of the invasive bladder cancer and to investigate their diagnostic and prognostic roles. Methods: NM proteins expressed in normal (n=3) or non-tumoral (n=9) tissue specimens and muscle-invasive bladder cancer (n=21) specimens were analyzed by two dimensional (2D) gel electrophoresis. PDQuest image analysis software was used to generate a comparative NM proteome analysis. Selected spots were characterized by liquid chromatography coupled to tandem mass spectrometry and Western blot. Results: We detected over 800 protein spots in each 2D map and 43 spots were identified. 30 proteins were differentially expressed by bladder tumor cells; among these, 19 proteins were detected in bladder tumoral tissues but not in normal and non-tumoral tissues and seven proteins correlated with tumor stage. One protein (p54nrb) was strongly correlated with vascular invasions and appeared to be also significantly (P

Original languageEnglish
Pages (from-to)13-26
Number of pages14
JournalCellular Oncology
Issue number1
Publication statusPublished - 2008


  • Biological markers
  • Bladder carcinoma
  • Diagnosis
  • Nuclear matrix proteins
  • Prognosis
  • Proteomics

ASJC Scopus subject areas

  • Cell Biology
  • Pathology and Forensic Medicine
  • Oncology


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