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.