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Disruption of Endoplasmic Reticulum Proteostasis in Age-Related Nervous System Disorders

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Cellular Biology of the Endoplasmic Reticulum

Part of the book series: Progress in Molecular and Subcellular Biology ((PMSB,volume 59))

Abstract

Endoplasmic reticulum (ER) stress is a prominent cellular alteration of diseases impacting the nervous system that are associated to the accumulation of misfolded and aggregated protein species during aging. The unfolded protein response (UPR) is the main pathway mediating adaptation to ER stress, but it can also trigger deleterious cascades of inflammation and cell death leading to cell dysfunction and neurodegeneration. Genetic and pharmacological studies in experimental models shed light into molecular pathways possibly contributing to ER stress and the UPR activation in human neuropathies. Most of experimental models are, however, based on the overexpression of mutant proteins causing familial forms of these diseases or the administration of neurotoxins that induce pathology in young animals. Whether the mechanisms uncovered in these models are relevant for the etiology of the vast majority of age-related sporadic forms of neurodegenerative diseases is an open question. Here, we provide a systematic analysis of the current evidence linking ER stress to human pathology and the main mechanisms elucidated in experimental models. Furthermore, we highlight the recent association of metabolic syndrome to increased risk to undergo neurodegeneration, where ER stress arises as a common denominator in the pathogenic crosstalk between peripheral organs and the nervous system.

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Abbreviations

AD:

Alzheimer’s disease

AgRP:

agouti-related protein

ALS:

amyotrophic lateral sclerosis

APP:

amyloid precursor protein

ASK1:

apoptosis signal-regulating kinase 1

ATF4:

activating transcription factor 4

ATF6:

activating transcription factor 6

ATF6f:

ATF6 fragment

BDNF:

brain-derived neurotrophic factor

BiP:

binding-immunoglobulin protein

CHOP:

C/EBP homologous protein

CNS:

central nervous system

Canx:

calnexin

CREB:

c-AMP response element-binding protein

Calr:

calreticulin

DBM:

dibenzoylmethane

EDEM:

endoplasmic reticulum degradation-enhancing α-mannosidase-like protein

eIF2α:

eukaryotic initiation factor 2α

ER:

endoplasmic reticulum

ERAD:

endoplasmic reticulum-associated protein degradation

ERp57:

endoplasmic reticulum-related protein 57

FoxO1:

Forkhead box protein O1

FUS:

fused in sarcoma

GADD34:

growth arrest and DNA damage-inducible protein 34

GalE:

UDP-galactose-4-epimerase

GSK3β:

glycogen synthase kinase 3β

GT1:

UDP-glucose:glycoprotein glucosyltransferase

HD:

Huntington’s disease

HERPUD1:

homocysteine-responsive ER-resident ubiquitin-like domain member 1 protein

HFD:

high-fat-diet

HIPK2:

homeodomain-interacting protein kinase 2

IκB:

inhibitor of NF-κB

IKK:

inhibitor of NF-κB kinase

IL-1β:

interleukin 1β

iNOS:

inducible nitric oxide synthase

IRE1α:

Inositol-requiring enzyme 1α

ISR:

integrated stress response

ISRIB:

integrated stress response inhibitor

JNK:

c-Jun N-terminal kinase

KIRA:

kinase inhibitor RNase attenuator

MSA:

multiple system atrophy

α-MSH:

α-melanocyte-stimulating hormone

NF-κB:

nuclear factor-κB

NLRP3:

nucleotide-binding oligomerization domain (NOD)-like receptor family pyrin domain-containing 3

4-PBA:

4-phenybutyrate

PD:

Parkinson’s disease

PDI:

protein disulfide isomerase

PERK:

PKR-like endoplasmic reticulum kinase

PI3K:

phosphoinositide 3-kinases

PMD:

protein misfolding disorder

POMC:

pro-opiomelanocortin

PPI:

protein phosphatase 1

PRD:

prion-related disorder

RIDD:

regulated IRE1-dependent decay

RTCB:

RNA 2′,3′-cyclic phosphate and 5’-OH ligase

S1P:

site-1 protease

S2P:

site-2 protease

SIL1:

nucleotide exchanging factor for BiP

SOCS3:

suppressor of cytokine signaling 3

SOD1:

superoxide dismutase 1

TARDBP:

TAR DNA binding protein

TNF:

tumor necrosis factor

TRAF2:

TNF receptor-associated factor 2

TXNIP:

thioredoxin-interacting protein

UPR:

unfolded protein response

UPS:

ubiquitin proteasome system

VCP:

valosin-containing protein

XBP1:

X-box binding protein 1

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Acknowledgements

This work was funded by FONDECYT 1191538, Muscular Dystrophy Association 575897 and ALS Association 19-IIA-456 (DBM), FONDECYT 3180427 (YH), and FONDECYT 1140549, FONDAP program 15150012, Millennium Institute P09-015-F, European Commission R&D MSCA-RISE 734749, FONDEF ID16I10223, FONDEF ID11E1007, CONICYT-Brazil 441921/2016-7, Michael J Fox Foundation for Parkinson’s Research—Target Validation grant 9277, US Office of Naval Research-Global N62909-16-1-2003, US Air Force Office of Scientific Research FA9550-21-1-0096, Department of Defense ALS Research Program Award 81XWH-16-1-0112 and Muscular Dystrophy Association 382453 (CH).

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Correspondence to Danilo B. Medinas or Claudio Hetz .

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Medinas, D.B., Hazari, Y., Hetz, C. (2021). Disruption of Endoplasmic Reticulum Proteostasis in Age-Related Nervous System Disorders. In: Agellon, L.B., Michalak, M. (eds) Cellular Biology of the Endoplasmic Reticulum . Progress in Molecular and Subcellular Biology, vol 59. Springer, Cham. https://doi.org/10.1007/978-3-030-67696-4_12

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