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      Functional interactions among microRNAs and long noncoding RNAs.

      Seminars in Cell & Developmental Biology
      Animals, Humans, MicroRNAs, physiology, RNA Interference, RNA, Long Noncoding

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          Abstract

          In mammals, the vast majority of transcripts expressed are noncoding RNAs, ranging from short RNAs (including microRNAs) to long RNAs spanning up to hundreds of kb. While the actions of microRNAs as destabilizers and repressors of the translation of protein-coding transcripts (mRNAs) have been studied in detail, the influence of microRNAs on long noncoding RNA (lncRNA) function is only now coming into view. Conversely, the influence of lncRNAs upon microRNA function is also rapidly emerging. In some cases, lncRNA stability is reduced through the interaction of specific miRNAs. In other cases, lncRNAs can act as microRNA decoys, with the sequestration of microRNAs favoring expression of repressed target mRNAs. Other lncRNAs derepress gene expression by competing with miRNAs for interaction with shared target mRNAs. Finally, some lncRNAs can produce miRNAs, leading to repression of target mRNAs. These microRNA-lncRNA regulatory paradigms modulate gene expression patterns that drive major cellular processes (such as cell differentiation, proliferation, and cell death) which are central to mammalian physiologic and pathologic processes. We review and summarize the types of microRNA-lncRNA crosstalk identified to-date and discuss their influence on gene expression programs. Published by Elsevier Ltd.

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          Author and article information

          Journal
          24965208
          4163095
          10.1016/j.semcdb.2014.05.015

          Chemistry
          Animals,Humans,MicroRNAs,physiology,RNA Interference,RNA, Long Noncoding
          Chemistry
          Animals, Humans, MicroRNAs, physiology, RNA Interference, RNA, Long Noncoding

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