Plasminogen activator inhibitor-1 as a potential marker for the malignancy of colorectal cancer

Br J Cancer. 2005 Oct 3;93(7):799-803. doi: 10.1038/sj.bjc.6602743.


To test the hypothesis that plasminogen activator inhibitor-1 (PAI-1) may serve as a candidate marker for the malignancy of colorectal cancer (CRC), we performed a quantitative RT-PCR for PAI-1 gene and evaluated the possible relationship between PAI-1 gene expression levels and clinicopathological findings in CRC. A significant increase in PAI-1 expression scores was observed in lymph node metastasis-positive CRCs (2.19 +/- 0.43) compared to negative ones (0.35 +/- 0.42) (P = 0.0037) as well as in distant metastasis-positive CRCs (3.50 +/- 1.18) compared to negative ones (0.99 +/- 0.30). The PAI-1 expression score markedly increased with the tumour stage (P = 0.0063; ANOVA test). Moreover, multivariate analysis revealed the PAI-1 expression score to be a strong and independent prognostic factor for CRC (P = 0.0432). These results suggested that PAI-1 might serve as a new parameter for the prediction of prognoses in CRC.

MeSH terms

  • Adult
  • Aged
  • Aged, 80 and over
  • Biomarkers, Tumor / genetics
  • Biomarkers, Tumor / metabolism*
  • Colorectal Neoplasms / metabolism*
  • Colorectal Neoplasms / pathology
  • Humans
  • Middle Aged
  • Neoplasm Invasiveness
  • Neoplasm Metastasis
  • Plasminogen Activator Inhibitor 1 / genetics
  • Plasminogen Activator Inhibitor 1 / metabolism*
  • Reverse Transcriptase Polymerase Chain Reaction


  • Biomarkers, Tumor
  • Plasminogen Activator Inhibitor 1