Cited by 374Cancer Cells and MetastasisCell Adhesion Molecules ResearchProtein Kinase Regulation and GTPase Signaling

An integrin β3-KRAS-RalB complex drives tumour stemness and resistance to EGFR inhibition

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Seguin, Laetitia, Kato, Shumei, Franovic, Aleksandra, Camargo, M. Fernanda, Lesperance, Jacqueline, Elliott, Kathryn C., Yebra, Mayra, Mielgo, Ainhoa +12 more·2014·Nature Cell Biology

Abstract

Tumour cells, with stem-like properties, are highly aggressive and often show drug resistance. Here, we reveal that integrin α(v)β₃ serves as a marker of breast, lung and pancreatic carcinomas with stem-like properties that are highly resistant to receptor tyrosine kinase inhibitors such as erlotinib. This was observed in vitro and in mice bearing patient-derived tumour xenografts or in clinical specimens from lung cancer patients who had progressed on erlotinib. Mechanistically, α(v)β₃, in the unliganded state, recruits KRAS and RalB to the tumour cell plasma membrane, leading to the activation of TBK1 and NF-κB. In fact, α(v)β₃ expression and the resulting KRAS-RalB-NF-κB pathway were both necessary and sufficient for tumour initiation, anchorage independence, self-renewal and erlotinib resistance. Pharmacological targeting of this pathway with bortezomib reversed both tumour stemness and erlotinib resistance. These findings not only identify α(v)β₃ as a marker/driver of carcinoma stemness but also reveal a therapeutic strategy to sensitize such tumours to RTK inhibition.

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Authors
Seguin, L., Kato, S., Franovic, A., Camargo, M. F., Lesperance, J., Elliott, K. C., Yebra, M., Mielgo, A., Lowy, A. M., Husain, H., Cascone, T., Diao, L., Wang, J., Wistuba, I. I., Heymach, J. V., Lippman, S. M., Desgrosellier, J. S., Anand, S., Weis, S. M., & Cheresh, D. A.
Affiliations
  • University of California San Diego (US)
  • The University of Texas MD Anderson Cancer Center (US)
Corresponding author
Cheresh, David A.
Venue
Nature Cell Biology
Published
2014-04-20
Volume
16
Issue
5
Pages
457-468
ISSN
  • 1465-7392 (ISSN-L)
  • 1476-4679
OpenAlex
W2029572050
Cited by
374
References
59
Citations by year
2026: 11 · 2025: 21 · 2024: 22 · 2023: 32 · 2022: 27 · 2021: 36 · 2020: 35 · 2019: 41 · 2018: 28 · 2017: 33 · 2016: 40 · 2015: 34 · 2014: 14
FWCI
19.48
Type
journal article
Language
en
Open access
Locations
  • Nature Cell Biology (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
  • Association pour la Recherche sur le Cancer
  • National Institutes of Health
  • U.S. Public Health Service (R3750286)
  • National Heart, Lung, and Blood Institute (HL 57900, R00HL112962, P01HL057900)
  • National Cancer Institute (CA-45726, R01CA045726, CA155620, R01CA155620, R37CA050286, R01CA168692, CA168692, P30CA023100, T32CA121938, P30CA016672)
Topics
  • Health Sciences › Medicine › Oncology › Cancer Cells and Metastasis
  • Health Sciences › Medicine › Immunology and Allergy › Cell Adhesion Molecules Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Kinase Regulation and GTPase Signaling
Keywords
integrin αvβ3, KRAS, RalB, erlotinib resistance, cancer stemness, cancer stem cells, NF-κB activation, TBK1, bortezomib, anchorage-independent growth, self-renewal, tumor initiation, lung cancer, breast cancer, pancreatic cancer
MeSH terms
Erlotinib Hydrochloride, Animals, Female, Humans, Lung Neoplasms, Mice, Nude, Phenotype, Proto-Oncogene Proteins, Quinazolines, Time Factors, Transfection, Tumor Cells, Cultured, Neoplastic Stem Cells, Signal Transduction, Randomized Controlled Trials as Topic, Proto-Oncogene Proteins p21(ras), Mice, SCID, Mice, Inbred NOD, Clinical Trials, Phase II as Topic, Protein Serine-Threonine Kinases, ras Proteins, Spheroids, Cellular, Drug Resistance, Neoplasm, Proto-Oncogene Proteins c-rel, ral GTP-Binding Proteins, Xenograft Model Antitumor Assays, RNA Interference, Integrin alphaVbeta3, Integrin beta3, Cell Line, Tumor, Tumor Burden, Protein Kinase Inhibitors, Cell Proliferation, Mice, Molecular Targeted Therapy, ErbB Receptors

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