In vitro and in vivo apatinib inhibits vasculogenic mimicry in melanoma MUM-2B cells

PLoS One. 2018 Jul 27;13(7):e0200845. doi: 10.1371/journal.pone.0200845. eCollection 2018.

Abstract

The effect of apatinib on the formation of vasculogenic mimicry (VM) was studied in a malignant melanoma cell line. MUM-2B cells cultured in three-dimensional Matrigel were treated with varying concentrations (0, 0.01, 0.05, 0.1, 0.5 μmol/L) of apatinib to test its effect on VM in vitro, followed by MTT proliferation and transwell invasion assays to determine the effect of apatinib on cell proliferation and invasion of MUM-2B cells. In vivo, we used a melanoma cancer model to test the effect of short-term apatinib (100, 200, 300 mg/kg) treatment on VM. Western blotting, immunohistochemistry staining, and CD31-PAS dual staining were performed to assess the expression of VEGFR-2, ERK-1/2, PI3K, and MMP-2, and formation of VM. The results showed apatinib-treated groups formed a lesser number of VM in 3D matrigel, while the cell viability in MTT proliferation assay and the number of migration cells in transwell invasion assay were significantly lower in apatinib-treated groups. In addition, short-term apatinib treatment inhibited angiogenesis, VM formation, and tumor growth in models of melanoma cancer. Mice in apatinib-treated groups showed a markedly reduced expression of VEGFR-2, ERK-1/2, PI3K, and MMP-2. In summary, apatinib could inhibit the expression of VEGFR-2, and downregulate the ERK1/2/PI3K/MMP-2 signaling cascade, which may be one of the underlying mechanisms by which apatinib inhibits angiogenesis and the development of VM in models of melanoma cancer, and restrains the formation of VM by MUM-2B cells. Apatinib shows inhibitory effects on cell proliferation and invasion of MUM-2B cells, which is a close relationship with the VM.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Antineoplastic Agents / pharmacology*
  • Binding Sites
  • Cell Culture Techniques
  • Cell Line, Tumor
  • Cell Movement / drug effects
  • Cell Proliferation
  • Cell Survival
  • Drug Screening Assays, Antitumor
  • Extracellular Signal-Regulated MAP Kinases / metabolism
  • Female
  • Humans
  • Matrix Metalloproteinase 2 / metabolism
  • Melanoma / drug therapy*
  • Mice
  • Mice, Inbred BALB C
  • Neoplasm Invasiveness
  • Neoplasm Transplantation
  • Neovascularization, Pathologic / metabolism
  • Phosphatidylinositol 3-Kinases / metabolism
  • Pyridines / pharmacology*
  • Signal Transduction
  • Skin Neoplasms / drug therapy*
  • Vascular Endothelial Growth Factor Receptor-2 / metabolism

Substances

  • Antineoplastic Agents
  • Pyridines
  • apatinib
  • Phosphatidylinositol 3-Kinases
  • KDR protein, human
  • Kdr protein, mouse
  • Vascular Endothelial Growth Factor Receptor-2
  • Extracellular Signal-Regulated MAP Kinases
  • MMP2 protein, human
  • Matrix Metalloproteinase 2
  • Mmp2 protein, mouse

Grants and funding

We are applying the grant support from Jiangsu Hengrui Medicine Co., Ltd (Lianyungang, Jiangsu, China). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.