Upregulated function of mitochondria-associated ER membranes in Alzheimer disease.
Upregulated function of mitochondria-associated ER membranes in Alzheimer disease.
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DOI:
10.1038/emboj.2012.202
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发表时间:
2012-11-05
期刊:
影响因子:
11.4
通讯作者:
Schon, Eric A.
中科院分区:
文献类型:
--
作者:
Area-Gomez, Estela;Castillo, Maria Del Carmen Lara;Tambini, Marc D.;Guardia-Laguarta, Cristina;de Groof, Ad J. C.;Madra, Moneek;Ikenouchi, Junichi;Umeda, Masato;Bird, Thomas D.;Sturley, Stephen L.;Schon, Eric A.
Alzheimer disease (AD) is associated with aberrant processing of the amyloid precursor protein (APP) by γ-secretase, via an unknown mechanism. We recently showed that presenilin-1 and -2, the catalytic components of γ-secretase, and γ-secretase activity itself, are highly enriched in a subcompartment of the endoplasmic reticulum (ER) that is physically and biochemically connected to mitochondria, called mitochondria-associated ER membranes (MAMs). We now show that MAM function and ER–mitochondrial communication—as measured by cholesteryl ester and phospholipid synthesis, respectively—are increased significantly in presenilin-mutant cells and in fibroblasts from patients with both the familial and sporadic forms of AD. We also show that MAM is an intracellular detergent-resistant lipid raft (LR)-like domain, consistent with the known presence of presenilins and γ-secretase activity in rafts. These findings may help explain not only the aberrant APP processing but also a number of other biochemical features of AD, including altered lipid metabolism and calcium homeostasis. We propose that upregulated MAM function at the ER–mitochondrial interface, and increased cross-talk between these two organelles, may play a hitherto unrecognized role in the pathogenesis of AD.
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DOI:
10.1083/jcb.200207113
发表时间:
2003-01-06
期刊:
The Journal of cell biology
影响因子:
--
作者:
Ehehalt R;Keller P;Haass C;Thiele C;Simons K
通讯作者:
Simons K
DOI:
10.1083/jcb.200104045
发表时间:
2001-08-20
期刊:
The Journal of cell biology
影响因子:
--
作者:
Cupers P;Bentahir M;Craessaerts K;Orlans I;Vanderstichele H;Saftig P;De Strooper B;Annaert W
通讯作者:
Annaert W
DOI:
10.1073/pnas.93.23.12867
发表时间:
1996-11-12
影响因子:
11.1
作者:
Emoto, K;Kobayashi, T;Umeda, M
通讯作者:
Umeda, M
影响因子:
4.8
作者:
Chan, Robin B.;Oliveira, Tiago G.;Di Paolo, Gilbert
通讯作者:
Di Paolo, Gilbert
DOI:
10.1016/0005-2736(88)90193-9
发表时间:
1988-05-24
期刊:
BIOCHIMICA ET BIOPHYSICA ACTA
影响因子:
--
作者:
CHOUNG, SY;KOBAYASHI, T;INOUE, K
通讯作者:
INOUE, K