Farnesyltransferase-Mediated Delivery of a Covalent Inhibitor Overcomes Alternative Prenylation to Mislocalize K-Ras

作者:Novotny Chris J; Hamilton Gregory L; McCormick Frank; Shokat Kevan M*
来源:ACS Chemical Biology, 2017, 12(7): 1956-1962.
DOI:10.1021/acschembio.7b00374

摘要

Mutationally activated Ras is one of the most common oncogenic drivers found across all malignancies, and its selective inhibition has long been a goal in both pharma and academia. One of the oldest and most validated methods to inhibit overactive Ras signaling is by interfering with its post-translational processing and subsequent cellular localization. Previous attempts to target Ras processing led to the development of farnesyltransferase inhibitors, which can inhibit H-Ras localization but not K-Ras due to its ability to bypass farnesyltransferase inhibition through alternative prenylation by geranylgeranyltransferase. Here, we present the creation of a neo-substrate for farnesyltransferase that prevents the alternative prenlation by geranylgeranyltransferase and mislocalizes oncogenic K-Ras in cells.

  • 出版日期2017-7