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Endoplasmic Reticulum Stress in Neurodegeneration

Introduction

Endoplasmic Reticulum Stress In Neurodegeneration is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.

Overview

Endoplasmic reticulum (ER) stress is a central pathological mechanism in [neurodegenerative diseases, triggered when the [@hetz2015]
accumulation of unfolded or misfolded proteins in the ER lumen exceeds the organelle's folding capacity. The ER is the primary site for [@xu2022]
synthesis, folding, and post-translational modification of secretory and transmembrane proteins, and its dysfunction activates a complex [@ref2017]
adaptive signaling network known as the [unfolded protein response](/entities/unfolded-protein-response) (UPR). While the [endoplasmic-reticulum-stress](/mechanisms/endoplasmic-reticulum-stress) initially functions as a protective mechanism to [@bruch2019]
restore proteostasis, chronic or excessive ER stress shifts the response from adaptive to maladaptive, ultimately triggering apoptotic [@chen2026]
cell death pathways that are particularly devastating in post-mitotic [neurons](/entities/neurons) with limited regenerative capacity [@zhang2023]
[@ref] [@khan2023]
[@hetz2015]. [@liao2025]

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