Target intelligence / Profile preview

IL21R antisense RNA 1 (non-protein coding) (IL21R-AS1)

Target
IL21R-AS1
Molecular classification
Long non-coding RNA (lncRNA), Antisense RNA, Other
01

Overview

IL21R antisense RNA 1 (IL21R-AS1) is a long non-coding RNA located at chromosome 4q27, acting in the nucleus where it likely regulates gene expression—most notably, it modulates the nearby IL21 receptor gene. It is differentially expressed in several disease states including coronary artery disease, systemic lupus erythematosus, and rheumatoid arthritis, and may regulate immune and inflammatory pathways, possibly via the IL-2/T follicular regulatory (Tfr) cell axis. Its precise molecular mechanism remains unclear, but research indicates potential as a non-invasive biomarker for immune-mediated diseases and vascular pathologies. Direct pharmacological targeting is not established, though modulation of its levels could theoretically influence disease activity.

Other names
IL21R antisense RNA 1IL21R-AS1IL21R antisense RNA 1 (non-protein coding)
02

Mechanism of action

Not applicable (no established drug mechanism as it is not a classical target)

03

Biological functions

Regulation of gene expression (especially modulation of the nearby IL21 receptor gene)Immune response modulationRegulation of inflammationNuclear enrichment (suggested to function primarily in the nucleus)
04

Disease associations

Autoimmune disease (such as systemic lupus erythematosus (SLE), rheumatoid arthritis (RA))Cardiovascular disease (coronary artery disease (CAD))
05

Safety considerations

Not established (no direct targeting; general research on lncRNA modulation may present off-target or unknown biological risks)
06

Biomarkers

Differential expression in plasma and monocytes used as a circulating biomarker for coronary artery disease (CAD)Reduced expression in PBMCs and CD4+ T cells is linked to SLE and RA disease activity

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