miRNA-mediated crosstalk between transcripts: The missing “linc”?

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Abstract

Recently, transcriptome-wide sequencing data have revealed the pervasiveness of intergenic long noncoding RNA (lncRNA) transcription. Subsets of lncRNAs have been demonstrated to crosstalk with and post-transcriptionally regulate mRNAs in a microRNA (miRNA)-dependent manner. Referred to as long noncoding competitive endogenous RNAs (lnceRNAs), these transcripts can contribute to diverse aspects of organismal and cellular biology, likely by providing a hitherto unrecognized layer of gene expression regulation. Here, we discuss the biological relevance of post-transcriptional regulation by lnceRNAs, provide insights on recent advances in the understanding of lnceRNA regulatory networks, and speculate on molecular factors that facilitate miRNA-dependent crosstalk between lnceRNAs and other transcripts.

Subsets of intergenic noncoding RNAs are demonstrated to crosstalk with post-transcriptionally regulated mRNAs in a microRNA-dependent manner, providing a previously unrecognized layer of gene expression regulation. However, their biological relevance and molecular factors that facilitate their miRNA-mediated crosstalks with other transcripts remains undetermined.

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