Alzheimer's Aβ assembly binds sodium pump and blocks endothelial NOS activity via ROS-PKC pathway in brain vascular endothelial cells.
Alzheimer's Aβ assembly binds sodium pump and blocks endothelial NOS activity via ROS-PKC pathway in brain vascular endothelial cells.
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阿尔茨海默病Aβ组装体通过ROS-PKC途径结合钠泵并阻断脑血管内皮细胞中内皮NOS活性。
DOI:
10.1016/j.isci.2021.102936
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发表时间:
2021-09-24
期刊:
影响因子:
5.8
通讯作者:
Hoshi M
中科院分区:
文献类型:
--
作者:
Sasahara T;Satomura K;Tada M;Kakita A;Hoshi M
Amyloid β-protein (Aβ) may contribute to worsening of Alzheimer’s disease (AD) through vascular dysfunction, but the molecular mechanism involved is unknown. Using ex vivo blood vessels and primary endothelial cells from human brain microvessels, we show that patient-derived Aβ assemblies, termed amylospheroids (ASPD), exist on the microvascular surface in patients’ brains and inhibit vasorelaxation through binding to the α3 subunit of sodium, potassium-ATPase (NAKα3) in caveolae on endothelial cells. Interestingly, NAKα3 is also the toxic target of ASPD in neurons. ASPD-NAKα3 interaction elicits neurodegeneration through calcium overload in neurons, while the same interaction suppresses vasorelaxation by increasing the inactive form of endothelial nitric oxide synthase (eNOS) in endothelial cells via mitochondrial ROS and protein kinase C, independently of the physiological relaxation system. Thus, ASPD may contribute to both neuronal and vascular pathologies through binding to NAKα3. Therefore, blocking the ASPD-NAKα3 interaction may be a useful target for AD therapy. Unlike insoluble Aβ, ASPD preferentially exist on the endothelium of AD microvessels ASPD inhibit vasorelaxation via binding to ATPase α3 present on endothelial caveolae ASPD-NAKα3 interaction reduces NO release by increasing eNOS-Thr495 phosphorylation Unlike Aβ1-42, ASPD induce eNOS inactivation via mitochondrial ROS/PKC pathway Neuroscience; Clinical neuroscience; Cellular neuroscience; Cell biology
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影响因子:
2.9
作者:
Garai, Kanchan;Verghese, Philip B.;Baban, Berevan;Holtzman, David M.;Frieden, Carl
通讯作者:
Frieden, Carl
DOI:
10.1093/jnen/62.6.685
发表时间:
2003-06-01
影响因子:
3.2
作者:
Frackowiak, J;Miller, DL;Mazur-Kolecka, B
通讯作者:
Mazur-Kolecka, B
DOI:
10.1073/pnas.74.8.3203
发表时间:
1977-01-01
影响因子:
11.1
作者:
ARNOLD, WP;MITTAL, CK;MURAD, F
通讯作者:
MURAD, F
影响因子:
10.8
作者:
Fransen, P;Hendrickx, J;Sys, SU
通讯作者:
Sys, SU
影响因子:
5
作者:
Fuchikami, Chiaki;Murakami, Kohji;Kuwano, Keiichi
通讯作者:
Kuwano, Keiichi