Pathological roles of wild-type cu, zn-superoxide dismutase in amyotrophic lateral sclerosis.

Pathological roles of wild-type cu, zn-superoxide dismutase in amyotrophic lateral sclerosis.
复制标题

DOI:
10.1155/2012/323261
复制
发表时间:
2012
影响因子:
1.5
通讯作者:
Furukawa Y
Furukawa Y
中科院分区:
其他
文献类型:
--
作者:
Furukawa Y

文献摘要

被引文献

相似文献

铜、锌超氧化物歧化酶 (SOD1) 基因的显性突变会导致家族性肌萎缩侧索硬化症 (ALS)。虽然 SOD1 突变如何导致疾病的发生和进展仍存在争议,但许多体外和体内研究都支持毒性增益机制,其中致病性突变会破坏 SOD1 天然结构的稳定性,从而促进错误折叠和聚集。事实上,SOD1 阳性内含物在脊髓运动神经元中的异常积累是 SOD1 相关家族性 ALS 的病理标志。此外,有或没有 sod1 基因突变的 ALS 病例在临床表型和神经病理学方面的相似性暗示了所有 ALS 病例共有的涉及 SOD1 的疾病机制。尽管野生型 SOD1 在散发性 ALS 中的致病作用仍存在争议,但新型 SOD1 抗体的最新发展使得在 ALS 病理条件下表征野生型 SOD1 成为可能。在此,我简要回顾了野生型SOD1在散发性ALS病例中的生化和免疫组化表征的最新进展,并讨论了野生型SOD1可能参与ALS的发病机制。
Dominant mutations in a Cu, Zn-superoxide dismutase (SOD1) gene cause a familial form of amyotrophic lateral sclerosis (ALS). While it remains controversial how SOD1 mutations lead to onset and progression of the disease, many in vitro and in vivo studies have supported a gain-of-toxicity mechanism where pathogenic mutations contribute to destabilizing a native structure of SOD1 and thus facilitate misfolding and aggregation. Indeed, abnormal accumulation of SOD1-positive inclusions in spinal motor neurons is a pathological hallmark in SOD1-related familial ALS. Furthermore, similarities in clinical phenotypes and neuropathology of ALS cases with and without mutations in sod1 gene have implied a disease mechanism involving SOD1 common to all ALS cases. Although pathogenic roles of wild-type SOD1 in sporadic ALS remain controversial, recent developments of novel SOD1 antibodies have made it possible to characterize wild-type SOD1 under pathological conditions of ALS. Here, I have briefly reviewed recent progress on biochemical and immunohistochemical characterization of wild-type SOD1 in sporadic ALS cases and discussed possible involvement of wild-type SOD1 in a pathomechanism of ALS.