Cited by 181Cancer Cells and MetastasisCellular Mechanics and InteractionsMechanisms of cancer metastasis

Small molecule inhibitors of ezrin inhibit the invasive phenotype of osteosarcoma cells

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Bulut, G, Hong, S-H, Chen, K, Beauchamp, E M, Rahim, S, Kosturko, G W, Glasgow, E, Dakshanamurthy, S +5 more·2012·Oncogene

Abstract

Ezrin is a multifunctional protein that connects the actin cytoskeleton to the extracellular matrix through transmembrane proteins. High ezrin expression is associated with lung metastasis and poor survival in cancer. We screened small molecule libraries for compounds that directly interact with ezrin protein using surface plasmon resonance to identify lead compounds. The secondary functional assays used for lead compound selection included ezrin phosphorylation as measured by immunoprecipitation and in vitro kinase assays, actin binding, chemotaxis, invasion into an endothelial cell monolayer, zebrafish and Xenopus embryonic development, mouse lung organ culture and an in vivo lung metastasis model. Two molecules, NSC305787 and NSC668394, that directly bind to ezrin with low micromolar affinity were selected based on inhibition of ezrin function in multiple assays. They inhibited ezrin phosphorylation, ezrin-actin interaction and ezrin-mediated motility of osteosarcoma (OS) cells in culture. NSC305787 mimicked the ezrin morpholino phenotype, and NSC668394 caused a unique developmental defect consistent with reduced cell motility in zebrafish. Following tail vein injection of OS cells into mice, both molecules inhibited lung metastasis of ezrin-sensitive cells, but not ezrin-resistant cells. The small molecule inhibitors NSC305787 and NSC668394 demonstrate a novel targeted therapy that directly inhibits ezrin protein as an approach to prevent tumor metastasis.

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Crossref · 10.1038/onc.2011.245

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  • The cytoskeletal linker ezrin provides a scaffold for PI3K-AKT signalling and facilitates survival through stresses that disseminated tumour cells first encounter within the lung.

    “The cytoskeletal linker ezrin provides a scaffold for PI3K-AKT signalling and facilitates survival through the stresses that disseminated tumour cells first encounter within the lung 72,73,74 .”

    From Osteosarcoma (2022) · cites this paper as [73]

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Authors
Bulut, G., Hong, S.-H., Chen, K., Beauchamp, E. M., Rahim, S., Kosturko, G. W., Glasgow, E., Dakshanamurthy, S., Lee, H.-S., Daar, I., Toretsky, J. A., Khanna, C., & Üren, A.
Affiliations
  • Georgetown University Medical Center (US)
  • National Cancer Institute (US)
Corresponding author
Üren, A
Venue
Oncogene
Published
2011-06-27
Volume
31
Issue
3
Pages
269-281
ISSN
  • 0950-9232 (ISSN-L)
  • 1476-5594
OpenAlex
W2019287405
Cited by
179
References
43
Citations by year
2026: 6 · 2025: 11 · 2024: 14 · 2023: 11 · 2022: 17 · 2021: 22 · 2020: 18 · 2019: 11 · 2018: 13 · 2017: 11 · 2016: 9 · 2015: 17 · 2014: 5 · 2013: 7 · 2012: 5
FWCI
3.14
Type
journal article
Language
en
Open access
Locations
  • Oncogene (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Cancer Institute (R01CA133662, R01CA138212, P30CA051008, T32CA009686)
Topics
  • Health Sciences › Medicine › Oncology › Cancer Cells and Metastasis
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular Mechanics and Interactions
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mechanisms of cancer metastasis
Keywords
ezrin, small molecule inhibitors, osteosarcoma, lung metastasis, tumor invasion, ezrin phosphorylation, cell motility, targeted therapy, zebrafish embryonic development
MeSH terms
Ezrin, Actins, Adamantane, Animals, Antineoplastic Agents, Bone Neoplasms, Cell Movement, Cytoskeletal Proteins, Female, Lung Neoplasms, Mice, Inbred BALB C, Neoplasm Invasiveness, Organ Culture Techniques, Phenols, Phosphorylation, Quinolines, Osteosarcoma, Xenopus, Zebrafish, Quinolones, Surface Plasmon Resonance, Cell Line, Tumor, Mice

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