C9orf72- derived proline:arginine poly-dipeptides disturb cytoskeletal architecture
C9orf72- derived proline:arginine poly-dipeptides disturb cytoskeletal architecture
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C9orf72 衍生的脯氨酸:精氨酸聚二肽扰乱细胞骨架结构
DOI:
10.1101/2020.10.14.338566
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Tomo Shiota
中科院分区:
文献类型:
--
作者:
藤井 敬之;山﨑 亮;宮地 佑希野;飯沼 今日子; Eun-Jae Lee;Kwang-Kuk Kim;吉良 潤一;Tomo Shiota
Amyotrophic lateral sclerosis (ALS) is an irreversible neurodegenerative disease caused by the degeneration of motor neurons, and cytoskeletal instability is considered to be involved in neurodegeneration. A hexanucleotide repeat expansion of theC9orf72, one of the most common causes of familial ALS, produces toxic proline:arginine (PR) poly-dipeptides. PR poly-dipeptides binds polymeric forms of low complexity sequences and intracellular puncta, thereby altering intermediate filaments (IFs). However, how PR poly-dipeptides affect the cytoskeleton, including IFs, microtubules and actin filaments, remains unknown. Here we performed a synthetic PR poly-dipeptide treatment on mammalian cells and investigated how it affects morphology of cytoskeleton and cell behaviors. We observed that PR poly-dipeptide treatment induce the degradation of vimentin bundles at perinucleus and dissociation of β-tubulin network. PR poly-dipeptides also lead to alteration of actin filaments toward to cell contours and strength cortical actin filaments via activation of ERM (ezrin/radixin/moesin) proteins. In addition, we found that PR poly-dipeptides promote phosphorylation of paxillin and recruitment of vinculin on focal adhesions, which lead to maturation of focal adhesions. Finally, we evaluated the effects of PR poly-dipeptides on mechanical property and stress response. Interestingly, treatment of PR poly-dipeptides increased the elasticity of the cell surface, leading to maladaptive response to cyclic stretch. These results suggest that PR poly-dipeptides cause mechanically sensitive structural reorganization and disrupt the cytoskeleton architecture.
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DOI:
--
发表时间:
2020
期刊:
影响因子:
--
作者:
Osada H;Murata K;Masumoto H;Yoshito Yamashiro
通讯作者:
Yoshito Yamashiro
影响因子:
16.6
作者:
Ikawa K;Sugimura K
通讯作者:
Sugimura K
DOI:
--
发表时间:
1989
期刊:
Brain : a journal of neurology
影响因子:
--
作者:
P. Leigh;A. Dodson;Michael Swash;J. Brion;Brian H. Anderton
通讯作者:
Brian H. Anderton
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:
2.5
作者:
B. Giasson;W. Mushynski
通讯作者:
W. Mushynski