Co-modulated behavior and effects of differentially expressed miRNA in colorectal cancer.

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 Genomics

journal_title

BMC genomics

authors

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 KW

doi

10.1186/1471-2164-14-S5-S12

subject

Has Abstract

pub_date

2013-01-01 00:00:00

pages

S12

issn

1471-2164

pii

1471-2164-14-S5-S12

journal_volume

14 Suppl 5

pub_type

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