A fusion protein containing murine vascular endothelial growth factor and tissue factor induces thrombogenesis and suppression of tumor growth in a colon carcinoma model

J Zhejiang Univ Sci B. 2008 Aug;9(8):602-9. doi: 10.1631/jzus.B0820120.

Abstract

Induction of tumor vasculature occlusion by targeting a thrombogen to newly formed blood vessels in tumor tissues represents an intriguing approach to the eradication of primary solid tumors. In the current study, we construct and express a fusion protein containing vascular endothelial growth factor (VEGF) and tissue factor (TF) to explore whether this fusion protein has the capability of inhibiting tumor growth in a colon carcinoma model. The murine cDNA of VEGF A and TF were amplified by reverse transcriptase polymerase chain reaction (RT-PCR), and then cloned into prokaryotic expression plasmid pQE30 with a linker. The expression product recombinant VEGF-TF (rVEGF-TF) was purified and proved to have comparable enzyme activity to a commercial TF and the capability of specific binding to tumor vessels. Significant decrease of tumor growth was found in the mice administered with rVEGF-TF on Day 6 after initiated rVEGF-TF treatment (P<0.05), and the tumor masses in 2 of 10 mice were almost disappeared on Day 14 after the first treatment. In addition, valid thrombogenesis and tumor necrosis were observed in the tumor tissues injected with rVEGF-TF. Our results demonstrate that occlusion of tumor vasculature with rVEGF-TF is potentially an effective approach for cancer therapy.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Cell Line, Tumor
  • Cloning, Molecular
  • Colonic Neoplasms / blood supply
  • Colonic Neoplasms / drug therapy*
  • Colonic Neoplasms / pathology*
  • Disease Models, Animal
  • Disease Progression
  • Gene Expression
  • Mice
  • Mice, Inbred BALB C
  • Neoplasm Transplantation
  • Plasmids / genetics
  • Recombinant Fusion Proteins / genetics
  • Recombinant Fusion Proteins / isolation & purification
  • Recombinant Fusion Proteins / metabolism
  • Recombinant Fusion Proteins / therapeutic use*
  • Thromboplastin / genetics
  • Thromboplastin / isolation & purification
  • Thromboplastin / metabolism
  • Thromboplastin / therapeutic use*
  • Thrombosis / drug therapy*
  • Thrombosis / pathology
  • Vascular Endothelial Growth Factor A / genetics
  • Vascular Endothelial Growth Factor A / isolation & purification
  • Vascular Endothelial Growth Factor A / metabolism
  • Vascular Endothelial Growth Factor A / therapeutic use*

Substances

  • Recombinant Fusion Proteins
  • Vascular Endothelial Growth Factor A
  • Thromboplastin