Post-transcriptional regulation of tyrosine hydroxylase expression in adrenal medulla and brain.

Post-transcriptional regulation of tyrosine hydroxylase expression in adrenal medulla and brain.
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DOI:
10.1196/annals.1410.054
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发表时间:
2008-12
影响因子:
5.2
通讯作者:
Sterling CR
Sterling CR
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Tank AW;Xu L;Chen X;Radcliffe P;Sterling CR

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长期应激可诱导肾上腺髓质和脑内酪氨酸羟化酶(TH)mRNA和TH蛋白的表达。这种诱导通常与TH基因转录速率的刺激有关。然而,许多研究报道了应激诱导的TH基因转录、TH mRNA和TH蛋白的变化之间的重大差异。这些差异表明,转录后机制也发挥了重要作用,在调节TH的表达,在应对压力和其他刺激。在这份报告中,我们总结了一些我们的研究结果和文献报道,证明这些差异在肾上腺髓质,蓝斑和中脑多巴胺神经元。然后,我们描述了我们最近的工作调查介导这种转录后调节肾上腺髓质和中脑的分子机制。我们的研究结果表明,反式作用因子结合到TH mRNA的3′UTR的多聚嘧啶丰富的区域发挥作用,在这些转录后机制。一个假设的细胞模型描述这种转录后调控的建议。
It is well-established that long-term stress leads to induction of tyrosine hydroxylase (TH) mRNA and TH protein in adrenal medulla and brain. This induction is usually associated with stimulation of TH gene transcription rate. However, a number of studies have reported major discrepancies between the stress-induced changes in TH gene transcription, TH mRNA and TH protein. These discrepancies suggest that post-transcriptional mechanisms also play an important role in regulating TH expression in response to stress and other stimuli. In this report we summarize some of our findings and literature reports that demonstrate these discrepancies in adrenal medulla, locus coeruleus and midbrain dopamine neurons. We then describe our recent work investigating the molecular mechanisms that mediate this post-transcriptional regulation in adrenal medulla and midbrain. Our results suggest that trans-acting factors binding to the polypyrimidine-rich region of the 3′UTR of TH mRNA play a role in these post-transcriptional mechanisms. A hypothetical cellular model describing this post-transcriptional regulation is proposed.
DOI: 10.1203/00006450-199412000-00006
发表时间: 1994-12-01
期刊: PEDIATRIC RESEARCH
影响因子: 3.6
作者:
DECRISTOFARO, JD;LAGAMMA, EF
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