Stress out the LINEs

Stress out the LINEs
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DOI:
10.1080/2159256x.2015.1133267
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发表时间:
2016-01
期刊:
MOBILE GENETIC ELEMENTS
影响因子:
--
通讯作者:
Guo Fei
Guo Fei
中科院分区:
其他
文献类型:
--
作者:
Hu Siqi;Liang Chen;Guo Fei

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移动的长散布元件1(LINE-1或L1)占人类基因组的17%,通过插入新的基因座来调节基因组的结构,从而引起散发性疾病。人类细胞已经进化出一系列机制来控制和限制LINE-1的活性,这并不奇怪。我们最近的研究揭示了这样一种机制,这是由压力颗粒途径。该机制通过将LINE-1 RNA-蛋白复合物隔离在细胞质应激颗粒内,从而抑制LINE-1 RNA的核输入及其随后的逆转录和整合到细胞DNA中来发挥作用。促进应激颗粒形成的条件,如SAMHD 1蛋白的表达,进一步减少LINE-1逆转录转座。
abstract Occupying 17% of human genome, the mobile long interspersed element 1 (LINE-1 or L1) continues to modulate the landscape of our genome by inserting into new loci and, as a result, causing sporadic diseases. It is not surprising that human cells have evolved a battery of mechanisms to control and limit the activity of LINE-1. Our recent study unravels such a mechanism that is imposed by the stress granule pathway. This mechanism functions by sequestering the LINE-1 RNA-protein complex within the cytoplasmic stress granules and thus inhibiting the nuclear import of LINE-1 RNA and its subsequent reverse transcription and integration into cellular DNA. Conditions that promote stress granule formation, such as expression of the SAMHD1 protein, further reduce LINE-1 retrotransposition.
DOI: 10.1146/annurev-genom-082509-141802
发表时间: 2011
影响因子: 8.7
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