Lonafarnib

Territorial Availability: Available through Bertin Technologies only in France

• Synonyms
  • 4-[2-[4-[(11R)-3,10-dibromo-8-chloro-6,11-dihydro-5H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-yl]-1-piperidinyl]-2-oxoethyl]-1-piperidinecarboxamide
• Correlated keywords
  • Sch66336 Sch-66336 farnesyl transferase post-translational modifications farnesylation Ras MAPK Akt cells proliferation Rheb mTOR antitumors anticancers inhibitors posttranslational post translational lipids oncogenic isoforms H-Ras HRas N-Ras NRas K-Ras KRas cytotoxic agents cyclophosphamide 5-fluorouracil vincristine in vivo inhibits inhibitions protein lipidation
• Product Overview:
  Farnesyltransferase drives the post-translational farnesylation of a number of target proteins, including Ras, a component of the MAPK and Akt signaling pathways involved in cell proliferation, and Ras homolog enriched in brain (Rheb), which stimulates mTOR activity.{21707} By arresting growth, farnesyltransferase inhibitors have great potential as antitumor agents. Lonafarnib is a farnesyltransferase inhibitor that blocks the post-translational lipid modification of oncogenic Ras isoforms H-Ras, N-Ras, and K-Ras (IC50s = 1.9, 2.8, and 5.2 nM, respectively) as well as Rheb (IC50 = 10-100 nM).{21709,21708} It inhibits H-Ras signaling in whole cells (IC50 = 10 nM) and blocks the transformed growth properties of fibroblasts (IC50 = 75 nM) and human tumor cell lines (IC50 = 400 nM) expressing activated K-Ras proteins. In the nude mouse, lonafarnib demonstrates potent dose-dependent oral activity in an array of human tumor xenograft models including tumors originating from colon, lung, pancreas, prostate, and urinary bladder.{21709} Combination treatments with various cytotoxic agents (cyclophosphamide, 5-fluorouracil, and vincristine) or MAPK or Akt pathway inhibitors can enhance the in vivo efficacy of lonafarib.{21709,21706}