Long noncoding RNA ( lncRNA) is a functional RNA molecule longer than 200 nucleotides.They are involved in epigenetic, transcriptional and post-transcriptional modifications, playing an important role in gene expres-sion, chromatin remodeling, histone modification, X chromosome inactivation, genomic imprinting, protein folding and ac-tivity as well as other important biological events.Some studies have proven that lncRNAs are involved in the development of metabolic diseases.The changes of their expression levels may be new diagnostic markers and therapeutic targets.
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