Revealing the Regulatory Mechanism of lncRNA-LMEP on Melanin Deposition Based on High-Throughput Sequencing in Xichuan Chicken Skin.

The therapeutic, medicinal, and nourishing properties of black-bone chickens are highly regarded by consumers in China. However, some birds may have yellow skin (YS) or light skin rather than black skin (BS), which causes economic losses every year. Long noncoding RNAs (lncRNAs) are widely present in living organisms, and they perform various biological functions. Many genes associated with BS pigmentation have been discovered, but the lncRNAs involved and their detailed mechanisms have remained untested. We detected 56 differentially expressed lncRNAs from the RNA-seq of dorsal skin (BS versus YS) and found that plays a vital role in melanogenesis by the combined analysis of lncRNAs and mRNAs. We found that the full length of the sequence was 3093 bp by RACE PCR, and we named it . Moreover, a subcellular localization analysis identified that is mainly present in the cytoplasm. After the overexpression and the interference with , the tyrosinase content significantly increased and decreased, respectively ( < 0.05). In summary, we identified the important lncRNAs of chicken skin pigmentation and initially determined the effect of on melanin deposition.