Late onset of motor neurons in mice overexpressing wild-type peripherin.
Late onset of motor neurons in mice overexpressing wild-type peripherin.
复制标题
过表达野生型外围蛋白的小鼠运动神经元的晚期发作。
DOI:
10.1083/jcb.147.3.531
复制
发表时间:
1999-11-01
影响因子:
7.8
通讯作者:
Julien, J P
中科院分区:
文献类型:
--
作者:
Beaulieu, J M;Nguyen, M D;Julien, J P
Peripherin, a type III intermediate filament (IF) protein, upregulated by injury and inflammatory cytokines, is a component of IF inclusion bodies associated with degenerating motor neurons in sporadic amyotrophic lateral sclerosis (ALS). We report here that sustained overexpression of wild-type peripherin in mice provokes massive and selective degeneration of motor axons during aging. Remarkably, the onset of peripherin-mediated disease was precipitated by a deficiency of neurofilament light (NF-L) protein, a phenomenon associated with sporadic ALS. In NF-L null mice, the overexpression of peripherin led to early- onset formation of IF inclusions and to the selective death of spinal motor neurons at 6 mo of age. We also report the formation of similar peripherin inclusions in presymptomatic transgenic mice expressing a mutant form of superoxide dismutase linked to ALS. Taken together, these results suggest that IF inclusions containing peripherin may play a contributory role in motor neuron disease.