Anti-angiogeneic target therapy for cancer with vaccine based on the recombinant chicken FGFR-1 in tumor-bearing mice

J Huazhong Univ Sci Technolog Med Sci. 2007 Apr;27(2):120-3. doi: 10.1007/s11596-007-0202-2.

Abstract

To explore the anti-tumor effect of immunotherapy with recombinant protein vaccine based on FGFR-1 of chicken (cFR-1) in a mouse Meth A fibrosarcoma model, tumor volume and survival rate of the mice were observed at a 3-day interval. Microvessel density (MVD) was detected by immunohistochemistry. Auto-antibodies against self-FGFR-1 were detected by Western blotting and ELISA, respectively. The anti-FGFR-1 antibody-producing B cells (APBCs) were detected by enzyme-linked immunospot (ELISPOT) assay. Eighteen days after inoculation of tumor cells, the tumor volume was significantly smaller in cFR-1-immunized group than in mouse FGFR-1 (mFR-1) immunized group and normal saline (NS) control group (P<0.05), and the survival time was significantly longer in cFR-1-immunized group than in the control groups (P<0.01). MVD was significantly lower in cFR-1-immunized group than in mFR-1-immunized group and NS group (16.8+/-5.6 vs 64.6+/-1.8 and 59.6+/-8.7, P<0.01). Antibodies against self-FGFR-1 were found in mFR-1-immunized group, the major antibody subclasses were IgG1 and IgG2b. Compared with the two control groups, the numbers of APBCs in cFR-1-immunized group were significantly increased (P<0.01) These results demonstrated that the cFR-1-related anti-angiogenesis protein vaccine could induce the production of auto-antibodies against self-FGFR-1, which futher inhibit angiogenesis and growth of solid tumor.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Blotting, Western
  • Cancer Vaccines / immunology
  • Cancer Vaccines / therapeutic use*
  • Chickens
  • Enzyme-Linked Immunosorbent Assay
  • Female
  • Fibrosarcoma / blood supply
  • Fibrosarcoma / pathology
  • Fibrosarcoma / therapy*
  • Immunotherapy / methods*
  • Mice
  • Mice, Inbred BALB C
  • Neovascularization, Pathologic / immunology
  • Neovascularization, Pathologic / pathology
  • Neovascularization, Pathologic / therapy*
  • Recombinant Proteins / immunology
  • Survival Analysis
  • Tumor Burden
  • Vascular Endothelial Growth Factor Receptor-1 / genetics
  • Vascular Endothelial Growth Factor Receptor-1 / immunology*

Substances

  • Cancer Vaccines
  • Recombinant Proteins
  • Vascular Endothelial Growth Factor Receptor-1