Endogenous hydrogen sulfide production is essential for dietary restriction benefits.
Cell
; 160(1-2): 132-44, 2015 Jan 15.
Article
en En
| MEDLINE
| ID: mdl-25542313
ABSTRACT
Dietary restriction (DR) without malnutrition encompasses numerous regimens with overlapping benefits including longevity and stress resistance, but unifying nutritional and molecular mechanisms remain elusive. In a mouse model of DR-mediated stress resistance, we found that sulfur amino acid (SAA) restriction increased expression of the transsulfuration pathway (TSP) enzyme cystathionine γ-lyase (CGL), resulting in increased hydrogen sulfide (H2S) production and protection from hepatic ischemia reperfusion injury. SAA supplementation, mTORC1 activation, or chemical/genetic CGL inhibition reduced H2S production and blocked DR-mediated stress resistance. In vitro, the mitochondrial protein SQR was required for H2S-mediated protection during nutrient/oxygen deprivation. Finally, TSP-dependent H2S production was observed in yeast, worm, fruit fly, and rodent models of DR-mediated longevity. Together, these data are consistent with evolutionary conservation of TSP-mediated H2S as a mediator of DR benefits with broad implications for clinical translation. PAPERFLICK
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Dieta
/
Sulfuro de Hidrógeno
Tipo de estudio:
Prognostic_studies
Límite:
Animals
Idioma:
En
Revista:
Cell
Año:
2015
Tipo del documento:
Article
País de afiliación:
Estados Unidos