Targeting MicroRNA-485-3p Blocks Alzheimer's Disease Progression.

Targeting MicroRNA-485-3p Blocks Alzheimer's Disease Progression.
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靶向microRNA-485- 3 p阻断阿尔茨海默病进展

DOI:
10.3390/ijms222313136
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发表时间:
2021-12-04
影响因子:
5.6
通讯作者:
Ryu JH
Ryu JH
中科院分区:
生物学2区
文献类型:
--
作者:
Koh HS;Lee S;Lee HJ;Min JW;Iwatsubo T;Teunissen CE;Cho HJ;Ryu JH

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阿尔茨海默病(AD)是一种以进行性记忆衰退和认知功能障碍为特征的痴呆形式。由于只有一种FDA批准的治疗方法,因此迫切需要有效的AD治疗策略。在这项研究中,我们发现microRNA-485- 3 p(miR-485- 3 p)在AD患者的脑组织、脑脊液和血浆中过表达,其反义寡核苷酸(阿索)在AD转基因小鼠模型中减少Aβ斑块积聚、tau病理发展、神经炎症和认知下降。在机制上,miR-485- 3 p阿索通过CD 36介导的Aβ吞噬作用在体外和体内增强Aβ清除。此外,miR-485- 3 p阿索施用减少了细胞凋亡,从而有效地降低了截短的tau水平。此外,miR-485- 3 p阿索治疗减少了促炎细胞因子(包括IL-1β和TNF-α)的分泌,并最终缓解了认知障碍。总的来说,我们的研究结果表明,miR-485- 3 p是AD炎症病理生理学的有用生物标志物,并且miR-485- 3 p阿索代表了管理AD病理学和认知下降的潜在治疗候选物。
Alzheimer’s disease (AD) is a form of dementia characterized by progressive memory decline and cognitive dysfunction. With only one FDA-approved therapy, effective treatment strategies for AD are urgently needed. In this study, we found that microRNA-485-3p (miR-485-3p) was overexpressed in the brain tissues, cerebrospinal fluid, and plasma of patients with AD, and its antisense oligonucleotide (ASO) reduced Aβ plaque accumulation, tau pathology development, neuroinflammation, and cognitive decline in a transgenic mouse model of AD. Mechanistically, miR-485-3p ASO enhanced Aβ clearance via CD36-mediated phagocytosis of Aβ in vitro and in vivo. Furthermore, miR-485-3p ASO administration reduced apoptosis, thereby effectively decreasing truncated tau levels. Moreover, miR-485-3p ASO treatment reduced secretion of proinflammatory cytokines, including IL-1β and TNF-α, and eventually relieved cognitive impairment. Collectively, our findings suggest that miR-485-3p is a useful biomarker of the inflammatory pathophysiology of AD and that miR-485-3p ASO represents a potential therapeutic candidate for managing AD pathology and cognitive decline.
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发表时间: 2013-01-31
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影响因子: 64.8
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