Secretome-based identification of Mac-2 binding protein as a potential oral cancer marker involved in cell growth and motility

J Proteome Res. 2008 Sep;7(9):3765-75. doi: 10.1021/pr800042n. Epub 2008 Jul 23.

Abstract

Oral squamous cell carcinoma (OSCC) is the 11th most common cancer worldwide, and is associated with a high death rate. At present, there are no suitable markers for detecting and/or monitoring OSCC in body fluids/tissues. Here, we used 1D SDS-PAGE and MALDI-TOF MS to systematically analyze the secretomes of two OSCC cell lines (OEC-M1 and SCC4). The putative OSCC-related proteins identified in this analysis included the Mac-2 binding protein (Mac-2 BP), which was further found to be overexpressed in OSCC specimens and significantly elevated in the sera of OSCC patients compared to healthy controls. Finally, RNA interference-based knock-down of Mac-2 BP expression in OSCC cells revealed for the first time that Mac-2 BP is involved in regulating growth and motility of OSCC cells.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Aged
  • Antigens, Neoplasm / analysis*
  • Antigens, Neoplasm / blood
  • Base Sequence
  • Biomarkers, Tumor / analysis*
  • Biomarkers, Tumor / blood
  • Carcinoma, Squamous Cell / diagnosis
  • Carcinoma, Squamous Cell / metabolism*
  • Carcinoma, Squamous Cell / pathology
  • Cell Cycle
  • Cell Division*
  • Cell Movement*
  • Culture Media, Conditioned
  • Electrophoresis, Polyacrylamide Gel
  • Enzyme-Linked Immunosorbent Assay
  • Female
  • Humans
  • Immunohistochemistry
  • Male
  • Membrane Glycoproteins / analysis*
  • Membrane Glycoproteins / blood
  • Middle Aged
  • Mouth Neoplasms / diagnosis
  • Mouth Neoplasms / metabolism*
  • Mouth Neoplasms / pathology
  • Proteome*
  • RNA Interference

Substances

  • Antigens, Neoplasm
  • Biomarkers, Tumor
  • Culture Media, Conditioned
  • Membrane Glycoproteins
  • Proteome
  • TAA90K protein, human