Journal
MOLECULAR AND CELLULAR BIOLOGY
Volume 33, Issue 20, Pages 3976-3982Publisher
AMER SOC MICROBIOLOGY
DOI: 10.1128/MCB.00683-13
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Funding
- Imperial BRC
- National Institute for Health Research
- Joseph Ettedgui Charitable Trust
- Medical Research Council [MR/L000172/1, G1100425] Funding Source: researchfish
- National Institute for Health Research [NIHR-RP-011-053] Funding Source: researchfish
- Worldwide Cancer Research [10-0510] Funding Source: researchfish
- MRC [MR/L000172/1, G1100425] Funding Source: UKRI
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The capacity of noncoding RNA to regulate gene expression in health and disease is epitomized by the microRNAs, small similar to 22nucleotide RNAs that target mRNAs to repress their translation into protein. Recently a previously unrecognized gene regulatory layer has emerged, characterized by the ability of a wide range of RNA transcripts to vie for microRNA binding and alleviate the repressive effect of microRNAs on their mRNA targets. Termed competing endogenous RNAs (ceRNAs), these participate in a microRNA-dependent cross talk, producing robust networks that when perturbed may lead to cancer. To date, the tumor suppressor PTEN has been most extensively validated as competing with a variety of ceRNAs in different cancers: reducing these ceRNAs appears to reduce PTEN levels, tipping cells toward cancer progression. In this review we look at ceRNA networks in cancer, their characteristics, and constituent parts, focusing on the insights that can be gained from the studies conducted on PTEN. We also explore the conditions that facilitate ceRNA cross talk, proposing that the disruption of these conditions may represent a general phenomenon in carcinogenesis.
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