The protein kinase KIS impacts gene expression during development and fear conditioning in adult mice.

The protein kinase KIS impacts gene expression during development and fear conditioning in adult mice.
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DOI:
10.1371/journal.pone.0043946
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发表时间:
2012
期刊:
影响因子:
3.7
通讯作者:
Maucuer A
Maucuer A
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Manceau V;Kremmer E;Nabel EG;Maucuer A

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脑富集蛋白激酶KIS(基因UHMK 1的产物)已被证明在体外磷酸化人剪接因子SF 1。这种磷酸化反过来有利于形成U2 AF 65-SF 1-RNA复合物,该复合物在剪接体组装的早期阶段发生在内含子的3′端。在这里,我们分析了KIS基因敲除对小鼠SF 1磷酸化,生理,成年行为和新生儿大脑中基因表达的影响。我们发现SF 1亚型在KIS-ko小鼠脑和成纤维细胞中表达不同。KIS在成纤维细胞中的重新表达恢复了SF 1同种型的野生型分布,证实了KIS和SF 1之间的联系。对新生儿大脑中转录本的微阵列分析揭示了大脑特异性基因的微妙下调,包括cys环配体门控离子通道和代谢酶。Q-PCR分析证实了这些缺陷,并指出前mRNA与mRNA的比率增加,可能是由于剪接效率的变化。虽然在前脉冲抑制和大多数其他行为测试中表现相似,但KIS-ko小鼠在自发活动和情境恐惧条件反射方面有所不同。这种差异表明,由于KIS失活引起的基因表达失调影响了特定的脑功能。
The brain-enriched protein kinase KIS (product of the gene UHMK1) has been shown to phosphorylate the human splicing factor SF1 in vitro. This phosphorylation in turn favors the formation of a U2AF65-SF1-RNA complex which occurs at the 3′ end of introns at an early stage of spliceosome assembly. Here, we analyzed the effects of KIS knockout on mouse SF1 phosphorylation, physiology, adult behavior, and gene expression in the neonate brain. We found SF1 isoforms are differently expressed in KIS-ko mouse brains and fibroblasts. Re-expression of KIS in fibroblasts restores a wild type distribution of SF1 isoforms, confirming the link between KIS and SF1. Microarray analysis of transcripts in the neonate brain revealed a subtle down-regulation of brain specific genes including cys-loop ligand-gated ion channels and metabolic enzymes. Q-PCR analyses confirmed these defects and point to an increase of pre-mRNA over mRNA ratios, likely due to changes in splicing efficiency. While performing similarly in prepulse inhibition and most other behavioral tests, KIS-ko mice differ in spontaneous activity and contextual fear conditioning. This difference suggests that disregulation of gene expression due to KIS inactivation affects specific brain functions.
DOI: 10.1016/j.brainres.2009.08.090
发表时间: 2009-12-08
期刊: BRAIN RESEARCH
影响因子: 2.9
作者:
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发表时间: 1997-09-12
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发表时间: 1997-05-30
期刊: CELL
影响因子: 64.5
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DOI: 10.1016/j.jmb.2008.06.026
发表时间: 2008-09-05
影响因子: 5.6
作者:
Manceau, Valerie;Kielkopf, Clara L.;Maucuer, Alexandre
通讯作者: Maucuer, Alexandre
DOI: 10.1074/jbc.m307976200
发表时间: 2003-12-12
影响因子: 4.8
作者:
Kent, OA;Reayi, A;MacMillan, AM
通讯作者: MacMillan, AM