Although specific microRNAs (miRNAs) can be upregulated in cancer, global miRNA downregulation is a common trait of human malignancies. The mechanisms of this phenomenon and the advantages it affords remain poorly understood. Here we identify a microRNA family, miR-103/107, that attenuates miRNA biosynthesis by targeting Dicer, a key component of the miRNA processing machinery. In human breast ...

Metastasis is themajor cause of poor prognosis in colorectal cancer (CRC), and increasing evidence supports the contribution ofmiRNAs to cancer progression. Here, we found that high expression ofmiR-103 andmiR-107 (miR-103/107) was associated with metastasis potential of CRC cell lines and poor prognosis in patients with CRC. We showed that miR-103/107 targeted the known metastasis suppressors ...

Metastasis is themajor cause of poor prognosis in colorectal cancer (CRC), and increasing evidence supports the contribution ofmiRNAs to cancer progression. Here, we found that high expression ofmiR-103 andmiR-107 (miR-103/107) was associated with metastasis potential of CRC cell lines and poor prognosis in patients with CRC. We showed that miR-103/107 targeted the known metastasis suppressors ...

Objectives Recent studies revealed that microRNAs (miRNAs) may play crucial roles in the responses and pathologic processes of spinal cord injury (SCI). This study aimed to investigate the effect and the molecular basis of miR-103 on LPS-induced injuries in PC12 cells in vitro and SCI rats in vivo. Materials and Methods PC12 cells were exposed to LPS to induce cell injuries to mimic the in vi...

MicroRNAs (miRNAs) are a class of small, noncoding RNAs that act as key regulators in various physiological and pathological processes. However, the regulatory mechanisms for miRNAs in colorectal cancer remain largely unknown. Here, we found that miR-103 is up-regulated in colorectal cancer and its overexpression is closely associated with tumor proliferation and migration. In addition, repress...

Marek's disease (MD) is a highly contagious viral neoplastic disease caused by Marek's disease virus (MDV), which can lead to huge economic losses in the poultry industry. Recently, microRNAs (miRNAs) have been found in various cancers and tumors. In recent years, 994 mature miRNAs have been identified through deep sequencing in chickens, but only a few miRNAs have been investigated further in ...

Emerging evidence has demonstrated that microRNAs (miRNA) play a critical role in chemotherapy-induced epithelial-mesenchymal transition (EMT) in lung cancer. However, the underlying mechanism of chemotherapy-mediated EMT has not been fully elucidated. In the present study, we explored the role of miR-103 in regulating cisplatin (DDP)-mediated EMT in human lung adenocarcinoma A549/DDP cells. Re...

MicroRNAs play extensive roles in cellular development. Analysis of the microRNA expression pattern during intestinal cell proliferation in early life is likely to unravel molecular mechanisms behind intestinal development and have implications for therapeutic intervention. In this study, we isolated mouse intestinal crypt cells, examined the differences in microRNA expression upon IGF-1 stimul...

Circulating microRNAs (miRNAs) have been reported as a biomarker for human malignancies, including colorectal cancer (CRC). The purpose of this study was to identify a novel biomarker for CRC through examination of serum miRNAs from the patients with CRC. Microarray analysis of miRNA expression was performed using paired pre- and post-operative serum from 10 CRC patients. miR-103 and miR-720 de...

Homologous recombinationmediates error-free repair ofDNAdouble-strandbreaks (DSB). RAD51 is an essential protein for catalyzing homologous recombination and its recruitment toDSBs ismediated bymany factors including RAD51, its paralogs, and breast/ovarian cancer susceptibility gene products BRCA1/2. Deregulation of these factors leads to impairedDNA repair, genomic instability, and cellular sen...