CtBP2 is associated with angiogenesis and regulates the apoptosis of prostate cancer cells

Oncol Rep. 2017 Aug;38(2):1259-1267. doi: 10.3892/or.2017.5763. Epub 2017 Jun 28.

Abstract

Angiogenesis is associated with prostate cancer (PCa) development and progression. Aberrant expression of C-terminal binding protein (CtBP)2 has been observed in PCa, but whether its change in expression plays a significant role in angiogenesis has not been completely characterized. we attempted to integrate and analyze the genome-wide association study (GWAS) of follicle stimulating hormone receptor (FSHR) and CtBP2, the Cancer Genome Atlas (TCGA) data and CtBP2 binding data in CistromeMap (18) to explore the mechanism of CtBP2 in PCa, and performed pathway enrichment analysis. We revealed that the top 6 pathways were closely related with angiogenesis. We used siRNA and overexpression plasmids to silence and overexpress CtBP2 expression. Altered expression of CtBP2 affected the expression of VEGFA, FSHR, FHL2 and SMAD3 which are closely related with angiogenesis. In addition, silencing of CtBP2 markedly increased the apoptosis of PCa cells in vitro, and decreased the expression of IL-8, AT2R, CCND1 and MMP9 which are associated with cancer progression. These results highlight the association between CtBP2 and angiogenesis in PCa and indicate that CtBP2 may be a potential therapeutic target for PCa.

MeSH terms

  • Alcohol Oxidoreductases / genetics*
  • Apoptosis*
  • Biomarkers, Tumor / genetics*
  • Cell Proliferation
  • Co-Repressor Proteins
  • Disease Progression
  • Gene Expression Regulation, Neoplastic
  • Genome-Wide Association Study
  • Humans
  • LIM-Homeodomain Proteins / genetics
  • Male
  • Muscle Proteins / genetics
  • Neovascularization, Pathologic / genetics
  • Neovascularization, Pathologic / pathology*
  • Nerve Tissue Proteins / genetics*
  • Prostatic Neoplasms / blood supply*
  • Prostatic Neoplasms / genetics
  • Prostatic Neoplasms / pathology*
  • Receptors, FSH / genetics
  • Smad3 Protein / genetics
  • Transcription Factors / genetics
  • Tumor Cells, Cultured
  • Vascular Endothelial Growth Factor A / genetics

Substances

  • Biomarkers, Tumor
  • Co-Repressor Proteins
  • FHL2 protein, human
  • LIM-Homeodomain Proteins
  • Muscle Proteins
  • Nerve Tissue Proteins
  • Receptors, FSH
  • SMAD3 protein, human
  • Smad3 Protein
  • Transcription Factors
  • VEGFA protein, human
  • Vascular Endothelial Growth Factor A
  • Alcohol Oxidoreductases
  • CTBP2 protein, human