Abstract
MicroRNAs are being evaluated as biomarkers and therapeutic targets for colon cancer. MicroRNAs have a functional role in the initiation and progression of colon cancer. Altered microRNA expression is found in tumors and their expression patterns may serve as useful cancer biomarkers. Polymorphisms in microRNAs or microRNA binding sites may modify the risk of developing cancer. As we continue to improve our understanding of the role for microRNAs in the initiation and progression of cancer, one goal is to gain insights that will allow for the development of microRNAs as biomarkers and therapeutic targets for cancer. This review provides a current understanding of the connection between microRNAs and colon cancer. We will cover evidence that global microRNA expression patterns are altered in colon tumors, that specific microRNAs have a functional role in colon carcinogenesis, that polymorphisms in microRNAs may be associated with risk of colon cancer, and the potential for using circulating microRNAs as a noninvasive biomarker for the detection of cancer.
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