Cited by 52Lung Cancer Treatments and MutationsProtein Kinase Regulation and GTPase SignalingCancer Genomics and Diagnostics

Kras oncogene ablation prevents resistance in advanced lung adenocarcinomas

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Salmón, Marina, Álvarez-Díaz, Ruth, Fustero-Torre, Coral, Brehey, Oksana, Lechuga, Carmen G., Sanclemente, Manuel, Fernández-García, Fernando, López-García, Alejandra +14 more·2023·Journal of Clinical Investigation

Abstract

KRASG12C inhibitors have revolutionized the clinical management of patients with KRASG12C-mutant lung adenocarcinoma. However, patient exposure to these inhibitors leads to the rapid onset of resistance. In this study, we have used genetically engineered mice to compare the therapeutic efficacy and the emergence of tumor resistance between genetic ablation of mutant Kras expression and pharmacological inhibition of oncogenic KRAS activity. Whereas Kras ablation induces massive tumor regression and prevents the appearance of resistant cells in vivo, treatment of KrasG12C/Trp53-driven lung adenocarcinomas with sotorasib, a selective KRASG12C inhibitor, caused a limited antitumor response similar to that observed in the clinic, including the rapid onset of resistance. Unlike in human tumors, we did not observe mutations in components of the RAS-signaling pathways. Instead, sotorasib-resistant tumors displayed amplification of the mutant Kras allele and activation of xenobiotic metabolism pathways, suggesting that reduction of the on-target activity of KRASG12C inhibitors is the main mechanism responsible for the onset of resistance. In sum, our results suggest that resistance to KRAS inhibitors could be prevented by achieving a more robust inhibition of KRAS signaling mimicking the results obtained upon Kras ablation.

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Crossref · 10.1172/jci164413

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  • The mouse model employed two independent Cre loci to prevent the common resistance mechanism of Cre inactivation.

    “This mouse model employed two independent Cre loci to prevent the common resistance mechanism of Cre inactivation.”

    From KRAS: Biology, Inhibition, and Mechanisms of Inhibitor Resistance (2024) · cites this paper as [39]

    The Results section (page not available) says the mouse model expressed two independent CreERT2 alleles and that both reduced recurrent tumors with unrecombined Kras alleles. It does not identify Cre inactivation as the mechanism, describe it as common, or say the two loci prevented it. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • Induced genetic deletion of mutant KRAS in the murine NSCLC tumor model Kras+/FSFG12Vlox;Trp53F/F;Rosa26-CreERT2KI/KI;Tg.hUBC-CreERT2+/T caused rapid tumor regressions.

    “The induced genetic deletion of mutant KRAS in the murine NSCLC tumor model Kras+/FSFG12Vlox;Trp53F/F;Rosa26-CreERT2KI/KI;Tg.hUBC-CreERT2+/T caused rapid tumor regressions [39].”

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Research works printed but not linked: 1

  1. [54]Lee CL et al Generation of primary tumors with Flp recombinase in FRT-flanked p53 mice Dis Model Mech 2012 5 3 397 402 22228755 PMC3339833

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Authors
Salmón, M., Álvarez-Díaz, R., Fustero-Torre, C., Brehey, O., Lechuga, C. G., Sanclemente, M., Fernández-García, F., López-García, A., Martín-Guijarro, M. C., Rodríguez-Perales, S., Bousquet-Mur, E., Morales-Cacho, L., Mulero, F., Al-Shahrour, F., Martínez, L., Domínguez, O., Caleiras, E., Ortega, S., Guerra, C., Musteanu, M., Drosten, M., & Barbacid, M.
Affiliations
  • Spanish National Cancer Research Centre (ES)
  • Instituto de Salud Carlos III (ES)
  • Consejo Superior de Investigaciones Científicas (ES)
Corresponding author
  • Drosten, Matthias
  • Barbacid, Mariano
Venue
Journal of Clinical Investigation
Published
2023-04-03
Volume
133
Issue
7
ISSN
  • 0021-9738 (ISSN-L)
  • 1558-8238
OpenAlex
W4327626369
Cited by
52
References
57
Citations by year
2026: 11 · 2025: 13 · 2024: 17 · 2023: 11
FWCI
9.58
Type
journal article
Language
en
Open access
Locations
  • Journal of Clinical Investigation (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DIGITAL.CSIC (Spanish National Research Council (CSIC)) (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • H2020 European Research Council (ERC-AG/695566,THERACAN)
  • Ministerio de Ciencia e Innovación (RTI2018-094664-B-I00, RTC2017-6576-1, PID2020-116705RB-100)
  • Comunidad de Madrid (B2017/BMD-3884 iLUNG-CM)
  • CRIS Cancer Foundation (MB grant)
  • Fundación Científica Asociación Española Contra el Cáncer (GC166173694BARB, LABAE20049RODR, LABAE211678DROS)
  • Instituto de Salud Carlos III (PI20/01837, PI19/00514)
Topics
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Lung Cancer Treatments and Mutations
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Kinase Regulation and GTPase Signaling
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer Genomics and Diagnostics
Keywords
KRAS G12C, lung adenocarcinoma, sotorasib, KRAS inhibitor resistance, gene ablation, xenobiotic metabolism, KRAS amplification, Ras signaling, Trp53, genetically engineered mouse models, antitumor efficacy
MeSH terms
Adenocarcinoma of Lung, Animals, Lung Neoplasms, Mutation, Oncogenes, Signal Transduction, Proto-Oncogene Proteins p21(ras), Mice

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