FOXC2 promotes colorectal cancer proliferation through inhibition of FOXO3a and activation of MAPK and AKT signaling pathways

Cancer Lett. 2014 Oct 10;353(1):87-94. doi: 10.1016/j.canlet.2014.07.008. Epub 2014 Jul 25.

Abstract

Abnormal expression of FOXC2 has been found in several human cancers. However, the role of FOXC2 in the progression of colorectal cancer (CRC) has not been well characterized. In analysis of 206 CRC specimens, we revealed that both high expression and nuclear localization of FOXC2 were correlated to aggressive characteristics and poor survival of patients with CRC. FOXC2 promoted cell proliferation through activation of MAPK and AKT pathways, subsequently down-regulating p27, up-regulating cyclin D1 and p-FOXO3a. Furthermore, FOXC2 nuclear localization was required for its promotion of cell proliferation. These findings suggest that FOXC2 plays an essential role in CRC progression and may serve as a valuable clinical prognostic marker of this disease.

Keywords: Colorectal cancer; FOXC2; Nuclear localization; Prognosis; Proliferation.

Publication types

  • Research Support, Non-U.S. Gov't
  • Retracted Publication

MeSH terms

  • Adenocarcinoma / enzymology*
  • Adenocarcinoma / genetics
  • Adenocarcinoma / pathology
  • Adenocarcinoma / therapy
  • Adolescent
  • Adult
  • Aged
  • Biomarkers, Tumor / genetics
  • Biomarkers, Tumor / metabolism*
  • Caco-2 Cells
  • Cell Proliferation*
  • Colorectal Neoplasms / enzymology*
  • Colorectal Neoplasms / genetics
  • Colorectal Neoplasms / pathology
  • Colorectal Neoplasms / therapy
  • Cyclin D1 / metabolism
  • Cyclin-Dependent Kinase Inhibitor p27 / metabolism
  • Disease-Free Survival
  • Enzyme Activation
  • Female
  • Forkhead Box Protein O3
  • Forkhead Transcription Factors / genetics
  • Forkhead Transcription Factors / metabolism*
  • Gene Expression Regulation, Neoplastic
  • HCT116 Cells
  • HT29 Cells
  • Humans
  • Male
  • Middle Aged
  • Mitogen-Activated Protein Kinases / metabolism*
  • Proto-Oncogene Proteins c-akt / metabolism*
  • RNA Interference
  • Signal Transduction*
  • Time Factors
  • Transfection
  • Up-Regulation
  • Young Adult

Substances

  • Biomarkers, Tumor
  • CCND1 protein, human
  • CDKN1B protein, human
  • FOXO3 protein, human
  • Forkhead Box Protein O3
  • Forkhead Transcription Factors
  • mesenchyme fork head 1 protein
  • Cyclin D1
  • Cyclin-Dependent Kinase Inhibitor p27
  • Proto-Oncogene Proteins c-akt
  • Mitogen-Activated Protein Kinases