Reduced translocation of nascent prion protein during ER stress contributes to neurodegeneration.
Reduced translocation of nascent prion protein during ER stress contributes to neurodegeneration.
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在ER应激期间,新生prion蛋白的易位降低会导致神经退行性。
DOI:
10.1016/j.devcel.2008.06.015
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发表时间:
2008-09
影响因子:
11.8
通讯作者:
Hegde, Ramanujan S.
中科院分区:
文献类型:
--
作者:
Rane, Neena S.;Kang, Sang-Wook;Chakrabarti, Oishee;Feigenbaum, Lionel;Hegde, Ramanujan S.
During acute stress in the endoplasmic reticulum (ER), mammalian prion protein (PrP) is temporarily prevented from translocation into the ER and instead routed directly for cytosolic degradation. This ‘pre-emptive’ quality control (pQC) system benefits cells by minimizing PrP aggregation in the secretory pathway during ER stress. However, the potential toxicity of cytosolic PrP raised the possibility that persistent pQC of PrP contributes to neurodegeneration in prion diseases. Here, we find evidence of ER stress and decreased translocation of nascent PrP during prion infection. Transgenic mice expressing a PrP variant with reduced translocation at levels expected during ER stress was sufficient to cause several mild age-dependent clinical and histological manifestations of PrP-mediated neurodegeneration. Thus, an ordinarily adaptive quality control pathway can be contextually detrimental over long time periods. We propose that one mechanism of prion-mediated neurodegeneration involves an indirect ER stress-dependent effect on nascent PrP biosynthesis and metabolism.
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影响因子:
4.8
作者:
Fioriti, L;Dossena, S;Chiesa, R
通讯作者:
Chiesa, R
影响因子:
16.2
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Mallucci, Giovanna R.;White, Melanie D.;Collinge, John
通讯作者:
Collinge, John
影响因子:
4.8
作者:
Kim, SJ;Rahbar, R;Hegde, RS
通讯作者:
Hegde, RS
影响因子:
4.8
作者:
Roucou, X;Guo, Q;LeBlanc, AC
通讯作者:
LeBlanc, AC
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5.3
作者:
Hetz, C;Russelakis-Carneiro, M;Soto, C
通讯作者:
Soto, C