Oxidative Damage of Tryptophan Hydroxylase-2 Mediated by Peroxisomal Superoxide Anion Radical in Brains of Mouse with Depression.
J Am Chem Soc
; 142(49): 20735-20743, 2020 12 09.
Article
en En
| MEDLINE
| ID: mdl-33237755
ABSTRACT
Depression is intimately linked with oxidative stress in the brains. Peroxisome plays vital roles in the regulation of intracellular redox balance by keeping reactive oxygen species (ROS) homeostasis. Available evidence indicates a possible relationship between peroxisomal ROS and depression. Even so, the underlying modulation mechanisms of peroxisomal ROS in depression are still rudimentary due to the limitations of the existing detecting methods. Hence, we developed a two-photon fluorescent probe TCP for the real-time visualization of the first produced ROS superoxide anion radical (O2â¢-) in peroxisome. Using the two-photon fluorescence imaging, we found that peroxisomal O2â¢- rose during oxidative stress in the mouse brains, resulting in the inactivation of catalase (CAT). Subsequently, the intracellular H2O2 level elevated, which further oxidized tryptophan hydroxylase-2 (TPH2). Then the decrease contents of TPH2 caused the dysfunction of 5-hydroxytryptamine (5-HT) system in the mouse brains, eventually leading to depression-like behaviors. Our work provides evidence of a peroxisomal O2â¢- mediated signaling pathway in depression, which will conduce to pinpoint potential targets for the treatment of depression.
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Triptófano Hidroxilasa
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Encéfalo
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Superóxidos
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Estrés Oxidativo
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Depresión
Límite:
Animals
Idioma:
En
Revista:
J Am Chem Soc
Año:
2020
Tipo del documento:
Article