PKM2 Is a Potential Diagnostic and Therapeutic Target for Retinitis Pigmentosa.
Dis Markers
; 2021: 1602797, 2021.
Article
em En
| MEDLINE
| ID: mdl-34804260
ABSTRACT
Retinitis pigmentosa (RP) is a major cause of blindness that is difficult to diagnose and treat. PKM2, a subtype of pyruvate kinase, is strongly associated with oxidative stress and is expressed in photoreceptors. We investigated whether PKM2 reduces photoreceptor cell apoptosis and evaluated possible antiapoptotic mechanisms in RP. We established RP models by exposing 661W cells to blue light and modulated PKM2 activity using a PKM2 inhibitor. We measured the apoptosis rates using calcein-acetoxymethyl ester/propidium iodide double staining and Cell Counting Kit-8, the oxidative stress levels using a reactive oxygen species assay, and the changes in protein expression by western blotting. Photodamage increased PKM2 expression, cellular oxidative stress, and apoptosis of 661W cells. PKM2 inhibition significantly reduced the levels of apoptosis and oxidative stress induced by photodamage. Our data suggest that PKM2 is a potential disease marker and therapeutic target for RP.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Células Fotorreceptoras
/
Piruvato Quinase
/
Retinose Pigmentar
/
Células Fotorreceptoras Retinianas Cones
/
Estresse Oxidativo
/
Neuroproteção
/
Luz
Tipo de estudo:
Diagnostic_studies
/
Etiology_studies
Limite:
Animals
Idioma:
En
Revista:
Dis Markers
Assunto da revista:
BIOQUIMICA
Ano de publicação:
2021
Tipo de documento:
Article
País de afiliação:
China