Wild-Type p53 Promotes Cancer Metabolic Switch by Inducing PUMA-Dependent Suppression of Oxidative Phosphorylation.
Cancer Cell
; 35(2): 191-203.e8, 2019 02 11.
Article
en En
| MEDLINE
| ID: mdl-30712844
ABSTRACT
The tumor suppressor p53 is somatically mutated in half of all human cancers. Paradoxically, the wild-type p53 (WTp53) is often retained in certain human cancers, such as hepatocarcinoma (HCC). We discovered a physiological and oncogenic role of WTp53 in suppressing pyruvate-driven oxidative phosphorylation by inducing PUMA. PUMA inhibits mitochondrial pyruvate uptake by disrupting the oligomerization and function of mitochondrial pyruvate carrier (MPC) through PUMA-MPC interaction, which depends on IκB kinase-mediated phosphorylation of PUMA at Ser96/106. High expression levels of PUMA are correlated with decreased mitochondrial pyruvate uptake and increased glycolysis in HCCs and poor prognosis of HCC patients. These findings are instrumental for cancer drug discovery aiming at activating WTp53 or restoring WTp53 activity to p53 mutants.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Fosforilación Oxidativa
/
Proteína p53 Supresora de Tumor
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Proteínas Proto-Oncogénicas
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Carcinoma Hepatocelular
/
Proliferación Celular
/
Proteínas Reguladoras de la Apoptosis
/
Neoplasias Hepáticas
Tipo de estudio:
Prognostic_studies
Límite:
Animals
/
Humans
/
Male
Idioma:
En
Revista:
Cancer Cell
Asunto de la revista:
NEOPLASIAS
Año:
2019
Tipo del documento:
Article