UM
Differential expression of microRNAs in plasma of patients with colorectal cancer: A potential marker for colorectal cancer screening
Ng E.K.O.1; Chong W.W.S.1; Jin H.1; Lam E.K.Y.1; Shin V.Y.1; Yu J.1; Poon T.C.W.1; Ng S.S.M.1; Sung J.J.Y.1
2009-10-01
Source PublicationGut
ISSN00175749 14683288
Volume58Issue:10Pages:1375-1381
AbstractObjective: MicroRNAs (miRNAs) have been shown to offer great potential in the diagnosis of cancer. We investigated whether plasma miRNAs could discriminate between patients with and without colorectal cancer (CRC). Methods: This study was divided into three phases: (1) marker discovery using real-time PCR-based miRNA profiling on plasma, corresponding cancerous and adjacent non-cancerous colonic tissues of five patients with CRC, along with plasma from five healthy individuals as controls; (2) marker selection and validation by real-time quantitative RT-PCR on a small set of plasma; and (3) independent validation on a large set of plasma from 90 patients with CRC, 20 patients with gastric cancer, 20 patients with inflammatory bowel disease (IBD) and 50 healthy controls. Results: Of the panel of 95 miRNAs analysed, five were upregulated both in plasma and tissue samples. All the five miRNAs were validated on the plasma of 25 patients with CRC and 20 healthy controls. Both miR-17-3p and miR-92 were significantly elevated in the patients with CRC (p<0.0005). The plasma levels of these markers were significantly reduced after surgery in 10 patients with CRC (p<0.05). Further validation with an independent set of plasma samples (n=180) indicated that miR-92 differentiates CRC from gastric cancer, IBD and normal subjects. This marker yielded a receiver operating characteristic curve area of 88.5%. At a cut-off of 240 (relative expression in comparison to RNU6B snRNA), the sensitivity was 89% and the specificity was 70% in discriminating CRC from control subjects. Conclusion: MiR-92 is significantly elevated in plasma of patients with CRC and can be a potential non-invasive molecular marker for CRC screening.
DOI10.1136/gut.2008.167817
URLView the original
Language英語
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Cited Times [WOS]:784   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Affiliation1.Chinese University of Hong Kong
2.Prince of Wales Hospital Hong Kong
Recommended Citation
GB/T 7714
Ng E.K.O.,Chong W.W.S.,Jin H.,et al. Differential expression of microRNAs in plasma of patients with colorectal cancer: A potential marker for colorectal cancer screening[J]. Gut,2009,58(10):1375-1381.
APA Ng E.K.O..,Chong W.W.S..,Jin H..,Lam E.K.Y..,Shin V.Y..,...&Sung J.J.Y..(2009).Differential expression of microRNAs in plasma of patients with colorectal cancer: A potential marker for colorectal cancer screening.Gut,58(10),1375-1381.
MLA Ng E.K.O.,et al."Differential expression of microRNAs in plasma of patients with colorectal cancer: A potential marker for colorectal cancer screening".Gut 58.10(2009):1375-1381.
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