Alzheimer's disease-associated peptide Aβ42 mobilizes ER Ca(2+) via InsP3R-dependent and -independent mechanisms.
Alzheimer's disease-associated peptide Aβ42 mobilizes ER Ca(2+) via InsP3R-dependent and -independent mechanisms.
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DOI:
10.3389/fnmol.2013.00036
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发表时间:
2013
影响因子:
4.8
通讯作者:
Roderick HL
中科院分区:
文献类型:
--
作者:
Jensen LE;Bultynck G;Luyten T;Amijee H;Bootman MD;Roderick HL
Dysregulation of Ca2+ homeostasis is considered to contribute to the toxic action of the Alzheimer's disease (AD)-associated amyloid-β-peptide (Aβ). Ca2+ fluxes across the plasma membrane and release from intracellular stores have both been reported to underlie the Ca2+ fluxes induced by Aβ42. Here, we investigated the contribution of Ca2+ release from the endoplasmic reticulum (ER) to the effects of Aβ42 upon Ca2+ homeostasis and the mechanism by which Aβ42 elicited these effects. Consistent with previous reports, application of soluble oligomeric forms of Aβ42 induced an elevation in intracellular Ca2+. The Aβ42-stimulated Ca2+ signals persisted in the absence of extracellular Ca2+ indicating a significant contribution of Ca2+ release from the ER Ca2+ store to the generation of these signals. Moreover, inositol 1,4,5-trisphosphate (InsP3) signaling contributed to Aβ42-stimulated Ca2+ release. The Ca2+ mobilizing effect of Aβ42 was also observed when applied to permeabilized cells deficient in InsP3 receptors, revealing an additional direct effect of Aβ42 upon the ER, and a mechanism for induction of toxicity by intracellular Aβ42.
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影响因子:
3.9
作者:
Bayer, Thomas A.;Wirths, Oliver
通讯作者:
Wirths, Oliver
DOI:
10.1073/pnas.0405941101
发表时间:
2004-10-05
影响因子:
11.1
作者:
Blanchard, BJ;Chen, A;Ingram, VM
通讯作者:
Ingram, VM
影响因子:
5.3
作者:
Abramov, AY;Canevari, L;Duchen, MR
通讯作者:
Duchen, MR
影响因子:
4.8
作者:
Bucciantini, M;Calloni, G;Stefani, M
通讯作者:
Stefani, M
影响因子:
4.8
作者:
De Felice, Fernanda G.;Velasco, Pauline T.;Klein, William L.
通讯作者:
Klein, William L.