Transcript specificity in BDNF-regulated protein synthesis.

Transcript specificity in BDNF-regulated protein synthesis.
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DOI:
10.1016/j.neuropharm.2013.05.004
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发表时间:
2014-01
期刊:
影响因子:
4.7
通讯作者:
Meffert MK
Meffert MK
中科院分区:
医学2区
文献类型:
--
作者:
Ruiz CR;Shi J;Meffert MK

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脑源性神经营养因子(BDNF)是一种重要的活性依赖性基因表达调节剂,可以调节转录和翻译。BDNF的一些功能,包括诱导树突生长和长期突触可塑性,特别是依赖于BDNF调节蛋白质合成的能力。尽管BDNF温和地增加了神经元的总蛋白质合成,但大量证据表明,BDNF只诱导一小部分表达的mRNAs的翻译,并表现出非凡的转录特异性。BDNF选择性上调一组不连续的mRNAs翻译的机制对其促进神经元生长和可塑性的营养功能具有内在重要性,也是本综述的重点。
Brain-derived neurotrophic factor (BDNF) is a critical activity-dependent modulator of gene expression, which can regulate both transcription and translation. Several functions of BDNF, including the induction of dendrite outgrowth and long-term synaptic plasticity, are known to depend, in particular, upon the ability of BDNF to regulate protein synthesis. Although BDNF modestly increases total neuronal protein synthesis, substantial evidence indicates that BDNF induces the translation of only a small subset of expressed mRNAs and demonstrates an extraordinary degree of transcript specificity. The mechanism by which BDNF selectively upregulates the translation of only a discrete group of mRNAs is of intrinsic importance to its trophic function in promoting neuronal growth and plasticity, and is the focus of this review.
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