Abstract
Ovarian cancer has a clear predilection for metastasis to the omentum, but the underlying mechanisms involved in ovarian cancer spread are not well understood. Here, we used a parabiosis model that demonstrates preferential hematogenous metastasis of ovarian cancer to the omentum. Our studies revealed that the ErbB3-neuregulin 1 (NRG1) axis is a dominant pathway responsible for hematogenous omental metastasis. Elevated levels of ErbB3 in ovarian cancer cells and NRG1 in the omentum allowed for tumor cell localization and growth in the omentum. Depletion of ErbB3 in ovarian cancer impaired omental metastasis. Our results highlight hematogenous metastasis as an important mode of ovarian cancer metastasis. These findings have implications for designing alternative strategies aimed at preventing and treating ovarian cancer metastasis.
Copyright © 2014 Elsevier Inc. All rights reserved.
Publication types
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Research Support, N.I.H., Extramural
MeSH terms
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Animals
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Carcinoma, Ovarian Epithelial
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Cell Line, Tumor
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Cell Movement
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Cell Proliferation
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Female
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Humans
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Mice
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Mice, Inbred C57BL
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Mice, Nude
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Neoplasm Invasiveness
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Neoplasms, Glandular and Epithelial / genetics
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Neoplasms, Glandular and Epithelial / metabolism
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Neoplasms, Glandular and Epithelial / prevention & control
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Neoplasms, Glandular and Epithelial / secondary*
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Neoplastic Cells, Circulating / metabolism
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Neoplastic Cells, Circulating / pathology*
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Neuregulin-1 / genetics
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Neuregulin-1 / metabolism
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Omentum / pathology*
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Ovarian Neoplasms / genetics
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Ovarian Neoplasms / metabolism
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Ovarian Neoplasms / pathology*
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Ovarian Neoplasms / therapy
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Parabiosis
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Peritoneal Neoplasms / genetics
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Peritoneal Neoplasms / metabolism
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Peritoneal Neoplasms / pathology*
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Peritoneal Neoplasms / prevention & control
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RNA Interference
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Receptor, ErbB-3 / genetics
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Receptor, ErbB-3 / metabolism
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Signal Transduction
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Time Factors
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Transfection
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Xenograft Model Antitumor Assays
Substances
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NRG1 protein, human
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Neuregulin-1
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ERBB3 protein, human
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Receptor, ErbB-3