An SMN-dependent U12 splicing event essential for motor circuit function.
An SMN-dependent U12 splicing event essential for motor circuit function.
复制标题
与电机电路函数必不可少的SMN依赖性U12剪接事件。
DOI:
10.1016/j.cell.2012.09.012
复制
发表时间:
2012-10-12
期刊:
影响因子:
64.5
通讯作者:
Pellizzoni L
中科院分区:
文献类型:
--
作者:
Lotti F;Imlach WL;Saieva L;Beck ES;Hao le T;Li DK;Jiao W;Mentis GZ;Beattie CE;McCabe BD;Pellizzoni L
Spinal muscular atrophy (SMA) is a motor neuron disease caused by deficiency of the ubiquitous survival motor neuron (SMN) protein. To define the mechanisms of selective neuronal dysfunction in SMA, we investigated the role of SMN-dependent U12 splicing events in the regulation of motor circuit activity. We show that SMN deficiency perturbs splicing and decreases the expression of a subset of U12 intron-containing genes in mammalian cells and Drosophila larvae. Analysis of these SMN target genes identifies Stasimon as a novel protein required for motor circuit function. Restoration of Stasimon expression in the motor circuit corrects defects in neuromuscular junction transmission and muscle growth in Drosophila SMN mutants and aberrant motor neuron development in SMN-deficient zebrafish. These findings directly link defective splicing of critical neuronal genes induced by SMN deficiency to motor circuit dysfunction, establishing a molecular framework for the selective pathology of SMA.
登录
查看更多内容
影响因子:
3.4
作者:
Lin CF;Mount SM;Jarmołowski A;Makałowski W
通讯作者:
Makałowski W
影响因子:
64.5
作者:
Cooper TA;Wan L;Dreyfuss G
通讯作者:
Dreyfuss G
影响因子:
64.5
作者:
LEFEBVRE, S;BURGLEN, L;MELKI, J
通讯作者:
MELKI, J
影响因子:
5.3
作者:
Wan, LL;Battle, DJ;Dreyfuss, G
通讯作者:
Dreyfuss, G
影响因子:
8.8
作者:
Praveen K;Wen Y;Matera AG
通讯作者:
Matera AG