Noncoding RNA gas5 is a growth arrest- and starvation-associated repressor of the glucocorticoid receptor.

Noncoding RNA gas5 is a growth arrest- and starvation-associated repressor of the glucocorticoid receptor.
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DOI:
10.1126/scisignal.2000568
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发表时间:
2010-02-02
期刊:
影响因子:
7.3
通讯作者:
Chrousos GP
Chrousos GP
中科院分区:
生物学1区
文献类型:
--
作者:
Kino T;Hurt DE;Ichijo T;Nader N;Chrousos GP

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营养物质的可用性通过影响基因转录来影响细胞生长和存活。糖皮质激素还影响基因转录,并​​对细胞生长、能量消耗和存活具有多种活性。我们发现,生长停滞特异性 5 (Gas5) 非编码 RNA 在因缺乏营养或生长因子而生长停滞的细胞中含量丰富,通过抑制糖皮质激素介导的几种反应基因的诱导,包括编码细胞凋亡抑制剂 2 的基因,使细胞对细胞凋亡敏感。Gas5 与糖皮质激素受体 (GR) 的 DNA 结合域结合 通过充当诱饵“糖皮质激素反应元件(GRE)”,从而与 DNA GRE 竞争与 GR 的结合。我们得出结论,Gas5 是 GR 的核糖阻遏蛋白,通过调节 GR 的转录活性来影响饥饿期间的细胞存活和代谢活动。
The availability of nutrients influences cellular growth and survival by affecting gene transcription. Glucocorticoids also influence gene transcription and have diverse activities on cell growth, energy expenditure, and survival. We found that the growth arrest-specific 5 (Gas5) noncoding RNA, which is abundant in cells whose growth has been arrested due to lack of nutrients or growth factors, sensitized cells to apoptosis by suppressing glucocorticoid-mediated induction of several responsive genes, including the one encoding cellular inhibitor of apoptosis 2. Gas5 bound to the DNA-binding domain of the glucocorticoid receptor (GR) by acting as a decoy “glucocorticoid response element (GRE)”, thus, competing with DNA GREs for binding to the GR. We conclude that Gas5 is a ribo-repressor of the GR, influencing cell survival and metabolic activities during starvation by modulating the transcriptional activity of the GR.
HIV-1 病毒粒子相关蛋白 vpr 是人类糖皮质激素受体的共激活剂。
DOI: 10.1084/jem.189.1.51
发表时间: 1999-01-04
影响因子: 15.3
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