Targeting KRAS-mutant pancreatic cancer through simultaneous inhibition of KRAS, MEK, and JAK2.

ABSTRACT: The Kirsten rat sarcoma (KRAS) oncogene was considered "undruggable" until the development of sotorasib, a KRAS^G12C selective inhibitor that shows favorable effects against lung cancers. MRTX1133, a novel KRAS^G12D inhibitor, has shown promising results in basic research, although its effects against pancreatic cancer are limited when used alone. Therefore, there is an urgent need to identify effective drugs that can be used in combination with KRAS inhibitors. In this study, we found that administration of the KRAS inhibitors sotorasib or MRTX1133 upregulated STAT3 phosphorylation and reactivated ERK through a feedback reaction. The addition of the MEK inhibitor trametinib and the JAK2 inhibitor fedratinib successfully reversed this effect and resulted in significant

SUBMITTER: Miyazaki S 

PROVIDER: S-EPMC11793007 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature