Haizhong Ma

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The miR-221/222 cluster has been demonstrated to function as oncomiR in human cancers. miR-221/222 promotes epithelial-to-mesenchymal transition (EMT) and confers tamoxifen resistance in breast cancer. However, the effects and mechanisms by which miR-221/222 regulates breast cancer aggressiveness remain unclear. Here we detected a much higher expression of(More)
MicroRNAs (miRNAs) are thought to regulate tumor progression and metastasis via direct interaction with target genes within cells. Emerging evidence has demonstrated the secretion of miRNAs into environment via cancer cell exosomes, called "exosomal shuttle small RNA". Microenvironmental miRNAs are important mediators of cell-to-cell communication, and they(More)
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