Abstract
The endoplasmic reticulum (ER) is the site of synthesis and folding of membrane-localised and secretory proteins. The load upon ER client proteins that cells process varies considerably depending on cell type and physiological state and cells adapt to this variation by modulating both the capacity of the ER to process proteins and the load of client proteins synthesised. The flux of proteins through the ER is carefully monitored by cells for abnormalities, including a build up of mis-folded proteins. Mammalian cells have evolved an intricate set of signalling pathways from the ER to the cytosol and nucleus, to allow the cell to respond to the presence of misfolded proteins within the ER. These pathways, known collectively as the unfolded protein response (UPR), are important for normal cellular homeostasis and organism development and may play key roles in the pathogenesis of many diseases. In this chapter we will discuss a number of diseases whose pathogenesis involves ER stress and UPR. In addition we discuss the potential therapeutic avenues available for modulation of ER stress in disease states and autophagy.
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Abbreviations
- PERK:
-
PRK-like endoplasmic reticulum kinase
- UPR:
-
unfolded protein response
- ER:
-
endoplasmic reticulum
- PI3Â K:
-
phosphatidyl inositol 3 kinase
- MAPK:
-
mitogen activated protein kinase
- JNK:
-
c-Jun NH2-terminal kinase
- PTEN:
-
phosphatase and tensin homologue on chromosome ten
- ROS:
-
reactive oxygen species
- PP:
-
protein phosphatase
- HIF:
-
Hypoxia Inducible Factor
- GRP:
-
glucose regulated protein
- ATF:
-
activating transcription factor
- XBP:
-
X-box binding protein
- CHOP:
-
CCAAT/-enhancer-binding protein homologous protein
- SERCA:
-
Sarco/Endoplasmic Reticulum Ca2 + -ATPase
- IRE1:
-
Inositol-requiring protein 2, Serine/threonine-protein kinase/endoribonuclease
- ERAD:
-
ER-associated protein degradation
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Booth, L. et al. (2012). Current advances in ER stress intervention therapies. In: Agostinis, P., Afshin, S. (eds) Endoplasmic Reticulum Stress in Health and Disease. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-4351-9_19
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