Cited by 139Protein Kinase Regulation and GTPase SignalingPancreatic and Hepatic Oncology ResearchCancer Genomics and Diagnostics

An In Vivo Kras Allelic Series Reveals Distinct Phenotypes of Common Oncogenic Variants

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Zafra, Maria Paz, Parsons, Marie J., Kim, Jangkyung, Alonso-Curbelo, Direna, Goswami, Sukanya, Schatoff, Emma M., Han, Teng, Katti, Alyna +4 more·2020·Cancer Discovery

Published version of a preprint

Abstract

KRAS is the most frequently mutated oncogene in cancer, yet there is little understanding of how specific KRAS amino acid changes affect tumor initiation, progression, or therapy response. Using high-fidelity CRISPR-based engineering, we created an allelic series of new LSL-Kras mutant mice, reflecting codon 12 and 13 mutations that are highly prevalent in lung (KRASG12C), pancreas (KRASG12R), and colon (KRASG13D) cancers. Induction of each allele in either the murine colon or pancreas revealed striking quantitative and qualitative differences between KRAS mutants in driving the early stages of transformation. Furthermore, using pancreatic organoid models, we show that KRASG13D mutants are sensitive to EGFR inhibition, whereas KRASG12C-mutant organoids are selectively responsive to covalent G12C inhibitors only when EGFR is suppressed. Together, these new mouse strains provide an ideal platform for investigating KRAS biology in vivo and for developing preclinical precision oncology models of KRAS-mutant pancreas, colon, and lung cancers. Significance: KRAS is the most frequently mutated oncogene. Here, we describe new preclinical models that mimic tissue-selective KRAS mutations and show that each mutation has distinct cellular consequences in vivo and carries differential sensitivity to targeted therapeutic agents. See related commentary by Kostyrko and Sweet-Cordero, p. 1626. This article is highlighted in the In This Issue feature, p. 1611

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Authors
Zafra, M. P., Parsons, M. J., Kim, J., Alonso-Curbelo, D., Goswami, S., Schatoff, E. M., Han, T., Katti, A., Fernandez, M. T. C., Wilkinson, J. E., Piskounova, E., & Dow, L. E.
Affiliations
  • 1Sandra and Edward Meyer Cancer Center, Weill Cornell Medicine, New York, New York.
  • Weill Cornell Medicine (US)
  • 3Cancer Biology and Genetics, Memorial Sloan Kettering Cancer Center, New York, New York.
  • University of Washington (US)
Venue
Cancer Discovery
Published
2020-11-01
Volume
10
Issue
11
Pages
1654-1671
ISSN
  • 2159-8274 (ISSN-L)
  • 2159-8290
OpenAlex
W3048519021
Cited by
139
References
68
Citations by year
2026: 20 · 2025: 26 · 2024: 27 · 2023: 22 · 2022: 24 · 2021: 16 · 2020: 3
FWCI
5.27
Type
journal article
Language
en
Open access
Licence
cc-by-nc-nd
Locations
  • Cancer Discovery (publishedVersion)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • Institutional Repository of the University of Granada (University of Granada) (submittedVersion, other-oa)
Funders
  • NIH NCI (R01CA195787)
  • NCI NIH (NIH T32 CA203702)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Kinase Regulation and GTPase Signaling
  • Health Sciences › Medicine › Oncology › Pancreatic and Hepatic Oncology Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer Genomics and Diagnostics
Keywords
KRAS, KRAS G12C, KRAS G12R, KRAS G13D, allelic series, codon 12 and 13 mutations, tumor initiation, tumor progression, pancreatic organoids, colon organoids, EGFR inhibition, targeted therapy sensitivity, lung cancer, pancreatic cancer, colon cancer
MeSH terms
Alleles, Humans, Oncogenes, Phenotype, Proto-Oncogene Proteins p21(ras), Cell Line, Tumor

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