Abstract
MicroRNAs (miRNAs) constitute a class of small non-coding RNAs that function as posttranscriptional gene regulators. The dysregulation of miRNAs has been linked to a series of diseases, including various types of cancer. Since their discovery in the miRNAs of cancer patients, there has been a steady increase in the study of miRNAs as stable, noninvasive biomarkers. Although several challenges remain to be concerned, miRNAs could be useful, non-invasive biomarkers for colorectal cancer diagnostics and prognosis. In this review, we summarized the discovery of miRNAs and their potential as biomarkers. We discussed their possible structural, function and further emphasized the significance of miRNAs in colorectal cancer (CRC).
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