articleCancer ResearchMar 30, 2010BRONZE OA

MicroRNA-155 Functions as an OncomiR in Breast Cancer by Targeting the Suppressor of Cytokine Signaling 1 Gene

University of Louisville · Fudan University · +7 more institutions

PubMed
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Abstract

MicroRNA-155 (miR-155) is overexpressed in many human cancers; however, the mechanisms by which miR-155 functions as a putative oncomiR are largely unknown. Here, we report that the tumor suppressor gene suppressor of cytokine signaling 1 (socs1) is an evolutionarily conserved target of miR-155 in breast cancer cells. We found that mir-155 expression is inversely correlated with socs1 expression in breast cancer cell lines as well as in a subset of primary breast tumors. We also identified a 24A-->G mutation in the miR-155 binding site of the SOCS1 3' untranslated region in a breast tumor that reduced miR-155 repression, implicating a mechanism for miRNA targets to avoid repression. Ectopic expression of…

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674
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Authors

8

Topics & keywords

Keywords
  • Oncomir
  • Suppressor of cytokine signaling 1
  • microRNA
  • Cancer research
  • miR-155
  • Biology
  • Gene silencing
  • Breast cancer
UN Sustainable Development Goals
  • Good health and well-being
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