<i>C9ORF72</i> dipeptide repeat proteins disrupt formation of GEM bodies and induce aberrant accumulation of survival of motor neuron protein
<i>C9ORF72</i> dipeptide repeat proteins disrupt formation of GEM bodies and induce aberrant accumulation of survival of motor neuron protein
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<i>C9ORF72</i>二肽重复蛋白破坏GEM体的形成并诱导运动神经元蛋白存活的异常积累
DOI:
10.1101/2021.03.24.436890
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Tsuiji Hitomi
中科院分区:
文献类型:
--
作者:
Kato Yuma;Yokogawa Minnie;Nakagawa Ikuma;Onodera Kazunari;Okano Hideyuki;Inoue Haruhisa;Hattori Mitsuharu;Okada Yohei;Tsuiji Hitomi
A GGGGCC repeat expansion in theC9ORF72gene is the most common genetic cause of amyotrophic lateral sclerosis (ALS), a devastating motor neuron disease. In the neurons of ALS patients, dipeptide repeat proteins (DPRs) are produced from repeat-containing RNAs by an unconventional form of translation, and some of these proteins, especially those containing poly(glycine-arginine) and poly(proline-arginine), are toxic to neurons. Gemini of coiled bodies (GEMs) are nuclear structures that harbor survival of motor neuron (SMN) protein, and SMN is essential for the assembly of U-rich small nuclear ribonucleoproteins (snRNPs) that are central for splicing. We previously reported that GEMs are lost and that snRNP biogenesis is misregulated in the motor neurons of ALS patients. Here we show that DPRs interfere with GEM formation and proper SMN localization in HeLa cells and iPSC-derived motor neurons from an ALS patient with theC9ORF72mutation. The accumulation of poly(glycine-arginine) markedly reduced the number of GEMs and caused the formation of aberrant cytoplasmic RNA granules that sequestered SMN. These findings indicate the functional impairment of SMN in motor neurons expressing DPRs and may provide a mechanism to explain the vulnerability of motor neurons of C9ORF72-ALS patients.
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影响因子:
82.9
作者:
Zhang YJ;Gendron TF;Ebbert MTW;O'Raw AD;Yue M;Jansen-West K;Zhang X;Prudencio M;Chew J;Cook CN;Daughrity LM;Tong J;Song Y;Pickles SR;Castanedes-Casey M;Kurti A;Rademakers R;Oskarsson B;Dickson DW;Hu W;Gitler AD;Fryer JD;Petrucelli L
通讯作者:
Petrucelli L
DOI:
--
发表时间:
--
期刊:
影响因子:
--
作者:
通讯作者:
--
影响因子:
16.2
作者:
DeJesus-Hernandez M;Mackenzie IR;Boeve BF;Boxer AL;Baker M;Rutherford NJ;Nicholson AM;Finch NA;Flynn H;Adamson J;Kouri N;Wojtas A;Sengdy P;Hsiung GY;Karydas A;Seeley WW;Josephs KA;Coppola G;Geschwind DH;Wszolek ZK;Feldman H;Knopman DS;Petersen RC;Miller BL;Dickson DW;Boylan KB;Graff-Radford NR;Rademakers R
通讯作者:
Rademakers R
影响因子:
3.5
作者:
Nirma D Perera;Rebecca K. Sheean;P. Crouch;Anthony R. White;M. Horne;B. J. Turner
通讯作者:
B. J. Turner
影响因子:
34.7
作者:
Burghes, Arthur H. M.;Beattie, Christine E.
通讯作者:
Beattie, Christine E.