中国神经再生研究(英文版) ›› 2025, Vol. 20 ›› Issue (1): 253-264.doi: 10.4103/NRR.NRR-D-23-01277

• 原著:退行性病与再生 • 上一篇    下一篇

腺相关病毒载体介导CHIP过表达可缓解APP/PS1小鼠的认知和病理表型

  

  • 出版日期:2025-01-15 发布日期:2025-01-15

AAV mediated carboxyl terminus of Hsp70 interacting protein overexpression mitigates the cognitive and pathological phenotypes of APP/PS1 mice

Zhengwei Hu1, 2, #, Jing Yang1, 3, 4, 5, #, Shuo Zhang1, 2, Mengjie Li1, Chunyan Zuo1, Chengyuan Mao1, 3, 4, 5, Zhongxian Zhang6, Mibo Tang7, Changhe Shi1, 3, 4, 5, *, Yuming Xu1, 3, 4, 5, *   

  1. 1Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan Province, China; 2Academy of Medical Sciences of Zhengzhou University, Zhengzhou, Henan Province, China; 3NHC Key Laboratory of Prevention and treatment of Cerebrovascular Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan Province, China; 4Henan Key Laboratory of Cerebrovascular Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan Province, China; 5Institute of Neuroscience, Zhengzhou University, Zhengzhou, Henan Province, China; 6Sino-British Research Centre for Molecular Oncology, National Centre for International Research in Cell and Gene Therapy, School of Basic Medical Sciences, Academy of Medical Sciences, Zhengzhou University, Zhengzhou, Henan Province, China; 7Department of Gerontology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan Province, China
  • Online:2025-01-15 Published:2025-01-15
  • Contact: Yuming Xu, MD, PhD, xuyuming@zzu.edu.cn; Changhe Shi, MD, PhD, shichanghe@gmail.com.
  • Supported by:
    This work was supported by the National Natural Science Foundation of China, Nos. 91849115 and U1904207 (to YX), 81974211 and 82171247 (to CS); and Non-profit Central Research Institute Fund of Chinese Academy of Medical Sciences, No. 2020-PT310-01 (to YX).

摘要:

既往研究发现热休克蛋白70羧基末端相互作用蛋白(Carboxyl terminus of the Hsp70 interacting protein, CHIP)发生突变可引起伴有认知功能下降的遗传性共济失调,因此CHIP过表达可能对阿尔茨海默病具有潜在的治疗作用。实验使用可跨越血脑屏障的腺相关病毒载体,介导CHIP蛋白在APP/PS1小鼠中过表达。结果显示,CHIP过表达改善了APP/PS1小鼠在Morris水迷宫和筑巢试验中的表现,减少了Aβ斑块,并降低了Aβ和磷酸化tau蛋白。CHIP还减轻了APP/PS1小鼠大脑淀粉样斑块周围小胶质细胞和星形胶质细胞的聚集。与Aβ生成和代谢相关的酶中,CHIP过表达促进α-分泌酶ADAM10的增加,并抑制β-分泌酶BACE1、Aβ降解酶IDE和NEP。与CHIP泛素连接酶功能具有相关性的Hsp70和Hsp40的表达也升高。CHIP过表达后的APP/PS1小鼠海马组织单细胞核转录组测序结果显示,与溶酶体途径和少突胶质细胞相关的生物学过程上调,这可能也是CHIP神经保护作用的潜在机制。该研究表明,腺相关病毒载体介导的CHIP过表达可缓解APP/PS1小鼠的认知和病理表型,对阿尔茨海默病具有神经保护作用。

https://orcid.org/0000-0003-2689-9897 (Yuming Xu); https://orcid.org/0000-0002-4843-0072 (Changhe Shi)

Abstract: The E3 ubiquitin ligase, carboxyl terminus of heat shock protein 70 (Hsp70) interacting protein (CHIP), also functions as a co-chaperone and plays a crucial role in the protein quality control system. In this study, we aimed to investigate the neuroprotective effect of overexpressed CHIP on Alzheimer’s disease. We used an adeno-associated virus vector that can cross the blood-brain barrier to mediate CHIP overexpression in APP/PS1 mouse brain. CHIP overexpression significantly ameliorated the performance of APP/PS1 mice in the Morris water maze and nest building tests, reduced amyloid-β plaques, and decreased the expression of both amyloid-β and phosphorylated tau. CHIP also alleviated the concentration of microglia and astrocytes around plaques. In APP/PS1 mice of a younger age, CHIP overexpression promoted an increase in ADAM10 expression and inhibited β-site APP cleaving enzyme 1, insulin degrading enzyme, and neprilysin expression. Levels of HSP70 and HSP40, which have functional relevance to CHIP, were also increased. Single nuclei transcriptome sequencing in the hippocampus of CHIP overexpressed mice showed that the lysosomal pathway and oligodendrocyte-related biological processes were up-regulated, which may also reflect a potential mechanism for the neuroprotective effect of CHIP. Our research shows that CHIP effectively reduces the behavior and pathological manifestations of APP/PS1 mice. Indeed, overexpression of CHIP could be a beneficial approach for the treatment of Alzheimer’s disease.

Key words: adeno-associated virus, Alzheimer’s disease, APP/PS1 mice, carboxyl terminus of Hsp70 interacting protein, gene therapy