Integrated proteomics identified up-regulated focal adhesion-mediated proteins in human squamous cell carcinoma in an orthotopic murine model

PLoS One. 2014 May 23;9(5):e98208. doi: 10.1371/journal.pone.0098208. eCollection 2014.

Abstract

Understanding the molecular mechanisms of oral carcinogenesis will yield important advances in diagnostics, prognostics, effective treatment, and outcome of oral cancer. Hence, in this study we have investigated the proteomic and peptidomic profiles by combining an orthotopic murine model of oral squamous cell carcinoma (OSCC), mass spectrometry-based proteomics and biological network analysis. Our results indicated the up-regulation of proteins involved in actin cytoskeleton organization and cell-cell junction assembly events and their expression was validated in human OSCC tissues. In addition, the functional relevance of talin-1 in OSCC adhesion, migration and invasion was demonstrated. Taken together, this study identified specific processes deregulated in oral cancer and provided novel refined OSCC-targeting molecules.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Carcinoma, Squamous Cell / genetics
  • Carcinoma, Squamous Cell / metabolism*
  • Carcinoma, Squamous Cell / pathology
  • Cell Movement / genetics
  • Focal Adhesions / genetics
  • Focal Adhesions / metabolism*
  • Focal Adhesions / pathology
  • Gene Expression Regulation, Neoplastic*
  • Heterografts
  • Humans
  • Male
  • Mice
  • Mice, Inbred BALB C
  • Mice, Nude
  • Neoplasm Invasiveness
  • Neoplasm Proteins / biosynthesis*
  • Neoplasm Proteins / genetics
  • Neoplasm Transplantation
  • Neoplasms, Experimental / genetics
  • Neoplasms, Experimental / metabolism*
  • Neoplasms, Experimental / pathology
  • Proteomics / methods
  • Talin / biosynthesis*
  • Talin / genetics
  • Tongue Neoplasms / genetics
  • Tongue Neoplasms / metabolism*
  • Tongue Neoplasms / pathology
  • Up-Regulation / genetics

Substances

  • Neoplasm Proteins
  • TLN1 protein, human
  • Talin

Grants and funding

This work was supported by FAPESP Grants: 2009/54067-3, 2010/19278-0, 2011/22421-2, 2009/53839-2 and 2011/02267-9; CNPq Grants: 470567/2009-0, 470549/2011-4, 301702/2011-0, 470268/2013-1, and 505413/2013-2; and Science without Borders Program Grant MEC/MCTI/CAPES/CNPq/FAPs 109/2012. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.