Limiting RyR2 Open Time Prevents Alzheimer's Disease-Related Neuronal Hyperactivity and Memory Loss but Not β-Amyloid Accumulation.
Limiting RyR2 Open Time Prevents Alzheimer's Disease-Related Neuronal Hyperactivity and Memory Loss but Not β-Amyloid Accumulation.
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DOI:
10.1016/j.celrep.2020.108169
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发表时间:
2020-09-22
期刊:
影响因子:
8.8
通讯作者:
Chen SRW
中科院分区:
文献类型:
--
作者:
Yao J;Sun B;Institoris A;Zhan X;Guo W;Song Z;Liu Y;Hiess F;Boyce AKJ;Ni M;Wang R;Ter Keurs H;Back TG;Fill M;Thompson RJ;Turner RW;Gordon GR;Chen SRW
Neuronal hyperactivity is an early primary dysfunction in Alzheimer’s disease (AD) in humans and animal models, but effective neuronal hyperactivity-directed anti-AD therapeutic agents are lacking. Here we define a previously unknown mode of ryanodine receptor 2 (RyR2) control of neuronal hyperactivity and AD progression. We show that a single RyR2 point mutation, E4872Q, which reduces RyR2 open time, prevents hyperexcitability, hyperactivity, memory impairment, neuronal cell death, and dendritic spine loss in a severe early-onset AD mouse model (5xFAD). The RyR2-E4872Q mutation upregulates hippocampal CA1-pyramidal cell A-type K+ current, a well-known neuronal excitability control that is downregulated in AD. Pharmacologically limiting RyR2 open time with the R-carvedilol enantiomer (but not racemic carvedilol) prevents and rescues neuronal hyperactivity, memory impairment, and neuron loss even in late stages of AD. These AD-related deficits are prevented even with continued β-amyloid accumulation. Thus, limiting RyR2 open time may be a hyperactivity-directed, non-β-amyloid-targeted anti-AD strategy. Yao et al. show that genetically or pharmacologically limiting the open duration of ryanodine receptor 2 upregulates the A-type potassium current and prevents neuronal hyperexcitability and hyperactivity, memory impairment, neuronal cell death, and dendritic spine loss in a severe early-onset Alzheimer’s disease mouse model, even with continued accumulation of β-amyloid.
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DOI:
10.1073/pnas.1206171109
发表时间:
2012-05-29
影响因子:
11.1
作者:
Busche, Marc Aurel;Chen, Xiaowei;Konnerth, Arthur
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影响因子:
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通讯作者:
Stutzmann GE
影响因子:
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作者:
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DOI:
10.1016/j.bbrc.2005.10.169
发表时间:
2005-12-30
影响因子:
3.1
作者:
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