Platelet-tumor cell interaction: effect of prostacyclin and a synthetic analog on metastasis formation

Cancer Chemother Pharmacol. 1988;22(4):289-93. doi: 10.1007/BF00254233.


The antimetastatic effect of the antithrombotic agents exogenous prostacyclin (PGI2) and a synthetic analog, Iloprost, on experimental metastasis formation was studied by injecting BL6 melanoma cells into C57BL/6 mice. Suitable in vivo treatment conditions were selected according to the known properties of the two drugs, including their pharmacokinetics. Iloprost showed a greater ability to inhibit platelet aggregation induced by BL6 melanoma cells. PGI2 displayed a limited antimetastatic activity, largely dependent on the tumor cell load and treatment schedule. Iloprost showed a far superior activity, its antimetastatic effect lasting longer and remaining detectable up to 6 h after tumor cell inoculation. The present data complex provides further support to the concept of a crucial role for platelet-tumor cell interaction in the process of metastasis formation.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Cell Line
  • Epoprostenol / pharmacology*
  • Iloprost
  • Male
  • Melanoma / physiopathology*
  • Melanoma / secondary
  • Mice
  • Mice, Inbred C57BL
  • Neoplasm Metastasis
  • Neoplastic Cells, Circulating*
  • Platelet Aggregation / drug effects*


  • Epoprostenol
  • Iloprost