在人类基因组中蛋白质编码基因小于2%,基因序列转录后主要形成由非编码RNA(noncodingRNA,ncRNA)组成巨大的分子网络,它们在真核生物调节细胞活动中发挥核心作用。参与基因调控的非编码RNA主要分为短非编码RNA和长非编码RNA(10ngnoncodingRNA,IncRNAs)两类,大部分非编码RNA研究都集中在短ncRNA。但研究表明,长非编码RNA可作为基因调控网络中的主要参与者促进基因的转录调控,与各种人类疾病的机制密切相关。
Less than 2% of genes in human genome are protein- coding genes, and gene sequence is mainly transcribed into huge molecular network of non-coding RNAs (ncRNAs) , which plays a central role in adjusting cellular activity in eukaryotes. NeR- NAs participating in gene regulation are mainly divided into two classes: short ncRNAs and long ncRNAs (lncRNAs). Most studies of ncRNAs have been focused on short ncRNA. Howev-er, studies have shown that lncRNAs, as the major participants of gene regulatory network, contribute to the transcriptional regu- lation of gene and are closely related to the mechanisms of vari- ous human diseases.