Farnesyl derivatives of rigid carboxylic acids-inhibitors of ras-dependent cell growth

J Med Chem. 1995 Apr 14;38(8):1267-72. doi: 10.1021/jm00008a004.


Inhibitors of the enzyme that methylates ras proteins, the prenylated protein methyltransferase (PPMTase), are described. They are farnesyl derivatives of rigid carboxylic acids that recognize the farnesylcysteine recognition domain of the enzyme but do not serve as substrates. They also inhibit ras-dependent cell growth by a mechanism that is probably unrelated to inhibition of ras methylation, even though their potencies as PPMTase inhibitors and cell-growth inhibitors correlate well. The most potent inhibitor is S-trans,trans-farnesylthiosalicylic acid (FTS) (2). FTS (2) selectively inhibits the growth of human Ha-ras-transformed Rat1 cells in vitro (EC50 = 7.5 microM).

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Carboxylic Acids / chemistry
  • Carboxylic Acids / pharmacology*
  • Cell Division / drug effects
  • Cell Line, Transformed
  • Farnesol / analogs & derivatives*
  • Farnesol / pharmacology
  • Humans
  • Protein Methyltransferases / antagonists & inhibitors
  • Rats
  • Salicylates / pharmacology*
  • Tumor Cells, Cultured
  • ras Proteins / antagonists & inhibitors*
  • ras Proteins / physiology


  • Carboxylic Acids
  • Salicylates
  • farnesylthiosalicylic acid
  • Farnesol
  • Protein Methyltransferases
  • protein-S-isoprenylcysteine O-methyltransferase
  • ras Proteins