Summary
The antisense transcript long non-coding RNA (lncRNA) (antisense non-coding RNA in the INK4 locus, ANRIL) is an antisense of the cyclin-dependent kinase inhibitor 2B (CDKN2B) gene on chromosome 9p21 that contains an overlapping 299-bp region and shares a bidirectional promoter with alternate open reading frame (ARF). In the context of gene regulation, ANRIL is responsible for directly recruiting polycomb group (PcG) proteins, including polycomb repressive complex-1 (PRC-1) and polycomb repressive complex-2 (PRC-2), to modify the epigenetic chromatin state and subsequently inhibit gene expression in cis-regulation. On the other hand, previous reports have indicated that ANRIL is capable of binding to a specific site or sequence, including the Alu element, E2F transcription factor 1 (E2F1), and CCCTC-binding factor (CTCF), to achieve trans-regulation functions. In addition to its function in cell proliferation, adhesion and apoptosis, ANRIL is very closely associated with atherosclerosis- related diseases. The different transcripts and the SNPs that are related to atherosclerotic vascular diseases (ASVD-SNPs) are inextricably linked to the development and progression of atherosclerosis. Linear transcripts have been shown to be a risk factor for atherosclerosis, whereas circular transcripts are protective against atherosclerosis. Furthermore, ANRIL also acts as a component of the inflammatory pathway involved in the regulation of inflammation, which is considered to be one of the causes of atherosclerosis. Collectively, ANRIL plays an important role in the formation of atherosclerosis, and the artificial modification of ANRIL transcripts should be considered following the development of this disease.
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This project was supported by grants from the Shenzhen Science and Technology Project (No. 201401027).
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Chi, Js., Li, Jz., Jia, Jj. et al. Long non-coding RNA ANRIL in gene regulation and its duality in atherosclerosis. CURR MED SCI 37, 816–822 (2017). https://doi.org/10.1007/s11596-017-1812-y
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DOI: https://doi.org/10.1007/s11596-017-1812-y