Defining the KRAS- and ERK-dependent transcriptome in KRAS-mutant cancers

Jeffrey A. Klomp, Jennifer E. Klomp, Clint A. Stalnecker, Kirsten L. Bryant, A. Cole Edwards, Kristina Drizyte-Miller, Priya S. Hibshman, J. Nathaniel Diehl, Ye S. Lee, Alexis J. Morales, Khalilah E. Taylor, Sen Peng, Nhan L. Tran, Laura E. Herring, Alex W. Prevatte, Natalie K. Barker, Laura D. Hover, Jill Hallin, Saikat Chowdhury, Oluwadara CokerHey Min Lee, Craig M. Goodwin, Prson Gautam, Peter Olson, James G. Christensen, John P. Shen, Scott Kopetz, Lee M. Graves, Kian Huat Lim, Andrea Wang-Gillam, Krister Wennerberg, Adrienne D. Cox, Channing J. Der

Research output: Contribution to journalArticlepeer-review

Abstract

How the KRAS oncogene drives cancer growth remains poorly understood. Therefore, we established a systemwide portrait of KRAS- and extracellular signal-regulated kinase (ERK)-dependent gene transcription in KRAS-mutant cancer to delineate the molecular mechanisms of growth and of inhibitor resistance. Unexpectedly, our KRAS-dependent gene signature diverges substantially from the frequently cited Hallmark KRAS signaling gene signature, is driven predominantly through the ERK mitogen-activated protein kinase (MAPK) cascade, and accurately reflects KRAS- and ERK-regulated gene transcription in KRAS-mutant cancer patients. Integration with our ERK-regulated phospho- and total proteome highlights ERK deregulation of the anaphase promoting complex/cyclosome (APC/C) and other components of the cell cycle machinery as key processes that drive pancreatic ductal adenocarcinoma (PDAC) growth. Our findings elucidate mechanistically the critical role of ERK in driving KRAS-mutant tumor growth and in resistance to KRAS-ERK MAPK targeted therapies.

Original languageEnglish
Pages (from-to)eadk0775
JournalScience (New York, N.Y.)
Volume384
Issue number6700
DOIs
StatePublished - Jun 7 2024

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