The unfolded protein response in multiple sclerosis

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The unfolded protein response in multiple sclerosis

The unfolded protein response (UPR) occurs in response to endoplasmic reticulum (ER) stress caused by the accumulation of unfolded or misfolded proteins in the ER. The UPR is comprised of three signaling pathways that promote cytoprotective functions to correct ER stress; however, if ER stress cannot be resolved the UPR results in apoptosis of affected cells. The UPR is an important feature of ...

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Mutant superoxide dismutase type 1 (MTSOD1) is thought to cause ∼20% of cases of familial amyotrophic lateral sclerosis (FALS) because it misfolds and aggregates. Previous studies have shown that MTSOD1 accumulates inside the endoplasmic reticulum (ER) and activates the unfolded protein response (UPR), suggesting that ER stress is involved in the pathogenesis of FALS. We used a genetic approach...

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The unfolded protein response

Where does the UPR function? Between the endoplasmic reticulum (ER) and the nucleus of eukaryotic cells. All secreted proteins and proteins that reside in secretory compartments translocate as nascent peptide chains into the ER, where they may undergo folding, modification and assembly before assuming their functional conformations. The ER maintains a specialized oxidizing environment to aid ch...

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The unfolded protein response.

The endoplasmic reticulum (ER) is a principal site for folding and maturation of transmembrane, secretory and ERresident proteins. Perturbations that alter ER homeostasis can lead to accumulation of unfolded proteins (UPs), which is a threat to all living cells. To cope with the stress, cells activate an intracellular signaling pathway – the unfolded protein response (UPR). The UPR is an integr...

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ژورنال

عنوان ژورنال: Frontiers in Neuroscience

سال: 2015

ISSN: 1662-453X

DOI: 10.3389/fnins.2015.00264