Journal
CANCER LETTERS
Volume 303, Issue 1, Pages 56-64Publisher
ELSEVIER IRELAND LTD
DOI: 10.1016/j.canlet.2011.01.016
Keywords
MicroRNAs; Neuroblastoma; miR-542-5p; Orthotopic mouse model
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Funding
- Science Foundation Ireland [07/IN.1/B1776]
- Children's Medical and Research Foundation
- NIH [5R01CA127496]
- Assisi Foundation of Memphis
- US Public Health [CA23099]
- Cancer Center Support from the National Cancer Institute [21766]
- American Lebanese Syrian Associated Charities (ALSAC)
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Several studies have implicated the dysregulation of microRNAs in neuroblastoma pathogenesis, an often fatal paediatric cancer arising from precursor cells of the sympathetic nervous system. Our group and others have demonstrated that lower expression of miR-542-5p is highly associated with poor patient survival, indicating a potential tumor suppressive function. Here, we demonstrate that ectopic over-expression of this miRNA decreases the invasive potential of neuroblastoma cell lines in vitro, along with primary tumor growth and metastases in an orthotopic mouse xenograft model, providing the first functional evidence for the involvement of miR-542-5p as a tumor suppressor in any type of cancer. (C) 2011 Elsevier Ireland Ltd. All rights reserved.
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