Abstract:
BACKGROUND:MicroRNAs (miRNAs) are short noncoding RNAs (approximately 22 nucleotides in length) that play important roles in colorectal cancer (CRC) progression through silencing gene expression. Numerous dysregulated miRNAs simultaneously participate in the process of colon cancer development. However, the detailed mechanisms and biological functions of co-expressed miRNA in colorectal carcinogenesis have yet to be fully elucidated. RESULTS:The objective of this study was to identify the dysfunctional miRNAs and their target mRNAs using a wet-lab experimental and dry-lab bioinformatics approach. The differentially expressed miRNA candidates were identified from 2 miRNA profiles, and were confirmed in CRC clinical samples using reported target genes of dysfunctional miRNAs to perform functional pathway enrichment analysis. Potential target gene candidates were predicted by an in silico search, and their expression levels between normal and colorectal tumor tissues were further analyzed using real-time polymerase chain reaction (RT-PCR). CONCLUSION:Fifteen dysfunctional miRNAs were engaged in metastasis-associated pathways through comodulating 7 target genes, which were identified by using a multi-step approach. The roles of these candidate genes are worth further exploration in the progression of colon cancer, and could potentially be targets in future therapy.
journal_name
BMC Genomicsjournal_title
BMC genomicsauthors
Chen WS,Chen TW,Yang TH,Hu LY,Pan HW,Leung CM,Li SC,Ho MR,Shu CW,Liu PF,Yu SY,Tu YT,Lin WC,Wu TT,Tsai KWdoi
10.1186/1471-2164-14-S5-S12subject
Has Abstractpub_date
2013-01-01 00:00:00pages
S12issn
1471-2164pii
1471-2164-14-S5-S12journal_volume
14 Suppl 5pub_type
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