Pharmacologic IRE1/XBP1s activation confers targeted ER proteostasis reprogramming.
Cellular Reprogramming Techniques
Drug Discovery
/ methods
Endoplasmic Reticulum
/ drug effects
Endoribonucleases
/ genetics
Gene Expression Regulation
/ drug effects
HEK293 Cells
Humans
Protein Serine-Threonine Kinases
/ genetics
Protein Unfolding
Proteostasis
/ drug effects
Unfolded Protein Response
/ drug effects
X-Box Binding Protein 1
/ genetics
Journal
Nature chemical biology
ISSN: 1552-4469
Titre abrégé: Nat Chem Biol
Pays: United States
ID NLM: 101231976
Informations de publication
Date de publication:
10 2020
10 2020
Historique:
received:
23
07
2019
accepted:
05
06
2020
pubmed:
22
7
2020
medline:
15
12
2020
entrez:
22
7
2020
Statut:
ppublish
Résumé
Activation of the IRE1/XBP1s signaling arm of the unfolded protein response (UPR) is a promising strategy to correct defects in endoplasmic reticulum (ER) proteostasis implicated in diverse diseases. However, no pharmacologic activators of this pathway identified to date are suitable for ER proteostasis remodeling through selective activation of IRE1/XBP1s signaling. Here, we use high-throughput screening to identify non-toxic compounds that induce ER proteostasis remodeling through IRE1/XBP1s activation. We employ transcriptional profiling to stringently confirm that our prioritized compounds selectively activate IRE1/XBP1s signaling without activating other cellular stress-responsive signaling pathways. Furthermore, we demonstrate that our compounds improve ER proteostasis of destabilized variants of amyloid precursor protein (APP) through an IRE1-dependent mechanism and reduce APP-associated mitochondrial toxicity in cellular models. These results establish highly selective IRE1/XBP1s activating compounds that can be widely employed to define the functional importance of IRE1/XBP1s activity for ER proteostasis regulation in the context of health and disease.
Identifiants
pubmed: 32690944
doi: 10.1038/s41589-020-0584-z
pii: 10.1038/s41589-020-0584-z
pmc: PMC7502540
mid: NIHMS1601243
doi:
Substances chimiques
X-Box Binding Protein 1
0
XBP1 protein, human
0
ERN1 protein, human
EC 2.7.11.1
Protein Serine-Threonine Kinases
EC 2.7.11.1
Endoribonucleases
EC 3.1.-
Types de publication
Journal Article
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
1052-1061Subventions
Organisme : NIA NIH HHS
ID : R01 AG046495
Pays : United States
Organisme : NIH HHS
ID : S10 OD025279
Pays : United States
Organisme : NINDS NIH HHS
ID : R01 NS095892
Pays : United States
Organisme : NIH HHS
ID : S10 OD026857
Pays : United States
Organisme : NINDS NIH HHS
ID : R01 NS092829
Pays : United States
Organisme : NIA NIH HHS
ID : F31 AG063489
Pays : United States
Commentaires et corrections
Type : CommentIn
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