小RNA
生物
乳腺癌
基因表达
癌症
基因沉默
癌症研究
基因表达调控
雌激素受体
微阵列
基因
遗传学
作者
Marilena V. Iorio,Manuela Ferracin,Chang Gong Liu,Angelo Veronese,Riccardo Spizzo,Silvia Sabbioni,Eros Magri,Massimo Pedriali,Muller Fabbri,Manuela Campiglio,Sylvie Ménard,Juan Palazzo,Anne Rosenberg,Piero Musiani,Stefano Volinia,Italo Nenci,George A. Calin,Patrizia Querzoli,Massimo Negrini,Carlo M. Croce
出处
期刊:Cancer Research
[American Association for Cancer Research]
日期:2005-08-15
卷期号:65 (16): 7065-7070
被引量:3714
标识
DOI:10.1158/0008-5472.can-05-1783
摘要
Abstract MicroRNAs (miRNAs) are a class of small noncoding RNAs that control gene expression by targeting mRNAs and triggering either translation repression or RNA degradation. Their aberrant expression may be involved in human diseases, including cancer. Indeed, miRNA aberrant expression has been previously found in human chronic lymphocytic leukemias, where miRNA signatures were associated with specific clinicobiological features. Here, we show that, compared with normal breast tissue, miRNAs are also aberrantly expressed in human breast cancer. The overall miRNA expression could clearly separate normal versus cancer tissues, with the most significantly deregulated miRNAs being mir-125b, mir-145, mir-21, and mir-155. Results were confirmed by microarray and Northern blot analyses. We could identify miRNAs whose expression was correlated with specific breast cancer biopathologic features, such as estrogen and progesterone receptor expression, tumor stage, vascular invasion, or proliferation index.
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