Long Noncoding RNA AW112010 Promotes the Differentiation of Inflammatory T Cells by Suppressing IL-10 Expression through Histone Demethylation.

The Journal of Immunology : Official Journal of the American Association of Immunologists
Xiaoming YangMitzi Nagarkatti

Abstract

Long noncoding RNAs (lncRNAs) have been demonstrated to play important regulatory roles in gene expression, from histone modification to protein stability. However, the functions of most identified lncRNAs are not known. In this study, we investigated the role of an lncRNA called AW112010. The expression of AW112010 was significantly increased in CD4+ T cells from C57BL/6J mice activated in vivo with myelin oligodendrocyte glycoprotein, Staphylococcal enterotoxin B, or in vitro with anti-CD3 anti-CD28 mAbs, thereby demonstrating that activation of T cells leads to induction of AW112010. In contrast, anti-inflammatory cannabinoids such as cannabidiol or δ-9-tetrahydrocannabinol decreased the expression of AW112010 in T cells. Interestingly, the expression of AW112010 was high in in vitro-polarized Th1 and Th17 cells but low in Th2 cells, suggesting that this lncRNA may regulate inflammation. To identify genes that might be regulated by AW112010, we used chromatin isolation by RNA purification, followed by sequencing. This approach demonstrated that AW112010 regulated the transcription of IL-10. Additionally, the level of IL-10 in activated T cells was low when the expression of AW112010 was increased. Use of small interfering RN...Continue Reading

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Jul 25, 2021·International Journal of Molecular Sciences·Bryan Latrell HollomanPrakash Nagarkatti
Sep 2, 2021·Biology of Reproduction·Sen LiJun-Yu Ma

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