Tsc2 knockout counteracts ubiquitin-proteasome system insufficiency and delays photoreceptor loss in retinitis pigmentosa.
Proc Natl Acad Sci U S A
; 119(11): e2118479119, 2022 03 15.
Article
in En
| MEDLINE
| ID: mdl-35275792
ABSTRACT
SignificanceStudies in multiple experimental systems have demonstrated that an increase in proteolytic capacity of post-mitotic cells improves cellular resistance to a variety of stressors, delays cellular aging and senescence. Therefore, approaches to increase the ability of cells to degrade misfolded proteins could potentially be applied to the treatment of a broad spectrum of human disorders. An example would be retinal degenerations, which cause irreversible loss of vision and are linked to impaired protein degradation. This study suggests that chronic activation of the mammalian target of rapamycin complex 1 (mTORC1) pathway in degenerating photoreceptor neurons could stimulate the degradation of ubiquitinated proteins and enhance proteasomal activity through phosphorylation.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Retinitis Pigmentosa
/
Retinal Rod Photoreceptor Cells
/
Ubiquitin
/
Proteasome Endopeptidase Complex
/
Proteolysis
Type of study:
Prognostic_studies
Limits:
Animals
Language:
En
Journal:
Proc Natl Acad Sci U S A
Year:
2022
Document type:
Article