Cited by 730Melanoma and MAPK PathwaysLung Cancer Treatments and MutationsColorectal Cancer Treatments and Studies

Modelling vemurafenib resistance in melanoma reveals a strategy to forestall drug resistance

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Das Thakur, Meghna, Salangsang, Fernando, Landman, Allison S., Sellers, William R., Pryer, Nancy K., Levesque, Mitchell P., Dummer, Reinhard, McMahon, Martin +1 more·2013·Nature

Abstract

Mutational activation of BRAF is the most prevalent genetic alteration in human melanoma, with ≥50% of tumours expressing the BRAF(V600E) oncoprotein. Moreover, the marked tumour regression and improved survival of late-stage BRAF-mutated melanoma patients in response to treatment with vemurafenib demonstrates the essential role of oncogenic BRAF in melanoma maintenance. However, as most patients relapse with lethal drug-resistant disease, understanding and preventing mechanism(s) of resistance is critical to providing improved therapy. Here we investigate the cause and consequences of vemurafenib resistance using two independently derived primary human melanoma xenograft models in which drug resistance is selected by continuous vemurafenib administration. In one of these models, resistant tumours show continued dependency on BRAF(V600E)→MEK→ERK signalling owing to elevated BRAF(V600E) expression. Most importantly, we demonstrate that vemurafenib-resistant melanomas become drug dependent for their continued proliferation, such that cessation of drug administration leads to regression of established drug-resistant tumours. We further demonstrate that a discontinuous dosing strategy, which exploits the fitness disadvantage displayed by drug-resistant cells in the absence of the drug, forestalls the onset of lethal drug-resistant disease. These data highlight the concept that drug-resistant cells may also display drug dependency, such that altered dosing may prevent the emergence of lethal drug resistance. Such observations may contribute to sustaining the durability of the vemurafenib response with the ultimate goal of curative therapy for the subset of melanoma patients with BRAF mutations.

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Authors
Das Thakur, M., Salangsang, F., Landman, A. S., Sellers, W. R., Pryer, N. K., Levesque, M. P., Dummer, R., McMahon, M., & Stuart, D. D.
Affiliations
  • University of California, San Francisco (US)
  • University Hospital Zurich (CH)
Corresponding author
  • McMahon, Martin
  • Stuart, Darrin D.
Venue
Nature
Published
2013-01-09
Volume
494
Issue
7436
Pages
251-255
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2058390096
Cited by
730
References
22
Citations by year
2026: 8 · 2025: 22 · 2024: 27 · 2023: 39 · 2022: 35 · 2021: 44 · 2020: 50 · 2019: 66 · 2018: 59 · 2017: 78 · 2016: 69 · 2015: 81 · 2014: 84 · 2013: 66 · 2012: 2
FWCI
44.76
Type
journal article
Language
en
Open access
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • Zurich Open Repository and Archive (University of Zurich) (acceptedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • Zurich Open Repository and Archive (University of Zurich) (submittedVersion)
  • Zurich Open Repository and Archive (University of Zurich)
Funders
  • National Heart, Lung, and Blood Institute (T32HL007185)
  • National Cancer Institute (R01CA176839)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Melanoma and MAPK Pathways
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Lung Cancer Treatments and Mutations
  • Health Sciences › Medicine › Oncology › Colorectal Cancer Treatments and Studies
Keywords
vemurafenib resistance, BRAF-mutant melanoma, BRAF V600E mutation, intermittent dosing, drug addiction, MEK/ERK signaling, xenograft models, tumor regression, drug resistance prevention, BRAF inhibitors, treatment durability
MeSH terms
Vemurafenib, Animals, Disease Models, Animal, Drug Administration Schedule, Humans, Indoles, Melanoma, Mutation, Neoplasm Transplantation, Sulfonamides, Time Factors, Drug Resistance, Neoplasm, Mitogen-Activated Protein Kinase Kinases, MAP Kinase Signaling System, Xenograft Model Antitumor Assays, Subcutaneous Tissue, Cell Line, Tumor, Extracellular Signal-Regulated MAP Kinases, Proto-Oncogene Proteins B-raf, Cell Proliferation, Mice

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