B2 SINE RNA as a novel regulator of glucocorticoid receptor transcriptional activity.

B2 SINE RNA as a novel regulator of glucocorticoid receptor transcriptional activity.
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DOI:
10.1016/j.ynstr.2023.100522
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发表时间:
2023-03
影响因子:
5
通讯作者:
Hunter RG
Hunter RG
中科院分区:
医学2区
文献类型:
--
作者:
Bartlett AA;Guffanti G;Hunter RG

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糖皮质激素是细胞对压力反应的关键成分。糖皮质激素通过在大脑和身体中普遍存在的糖皮质激素受体起作用。糖皮质激素受体可以结合整个基因组的应答元件,引起转录的变化,在细胞水平上观察到一种适应。然而,糖皮质激素受体激活导致的转录变化在大脑区域、应激条件和糖皮质激素暴露的反复发作中是可变的。在这里,我们描述了一种非编码RNA, B2 SINE,它受糖皮质激素调节,反过来可以调节糖皮质激素受体的转录活性。我们发现,激活的糖皮质激素受体通过转录序列中包含的诱饵反应元件直接与B2 SINE RNA相互作用,并改变受体与基因组中反应元件的结合,随后改变位点表达。
Glucocorticoids are a key component to the cellular response to stress. Glucocorticoids act via glucocorticoid receptors found ubiquitously in the brain and body. Glucocorticoid receptors can bind to response elements throughout the genome to elicit changes in transcription, an adaptation observed at the cellular level. Yet, the transcriptional changes as a consequence of glucocorticoid receptor activation are variable across brain regions, stress conditions and recurrent bouts of glucocorticoid exposure. Here we describe a non-coding RNA, B2 SINE, which is regulated by glucocorticoids and can in turn regulate glucocorticoid receptor transcriptional activity. We show that activated glucocorticoid receptors interact directly with B2 SINE RNA via a decoy response element contained within the transcript sequence and alter receptor binding to response elements in the genome and, subsequently, changes in loci expression.
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