Journal
CRITICAL REVIEWS IN ONCOLOGY HEMATOLOGY
Volume 145, Issue -, Pages -Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.critrevonc.2019.102854
Keywords
Circular RNAs; Gastrointestinal cancers; microRNA sponge; Prognostic indicator; Biomarkers; Signaling pathways
Categories
Funding
- US NIH [R01AI050875, R21AI121700]
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Both environmental and genetic factors are involved in the initiation and development of gastrointestinal cancer. Covalent closed circular RNAs (circRNAs) are produced by a mechanism called back-splicing from mRNAs. They are highly stable and show cell and tissue specific expression patterns. Although some functions such as microRNA sponge and RNA binding protein sponge have been reported for a small number of circRNAs, the function of thousands of other circRNAs is still unknown. Dysregulation of circRNAs has been reported in many GI cancers and are involved in metastasis and invasion. CircRNAs have been reported to be useful as prognostic markers and targets for developing new treatments. We first describe the properties and biogenesis of circRNAs. We then summarize recent reports about circRNA functions, expression status, and their potential to be used as biomarkers in GI cancers including, gastric cancer, colorectal cancer, esophageal cancer, hepatocellular carcinoma, gallbladder cancer and pancreatic cancer.
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