ERα down-regulates carbohydrate responsive element binding protein and decreases aerobic glycolysis in liver cancer cells.
J Cell Mol Med
; 25(7): 3427-3436, 2021 04.
Article
em En
| MEDLINE
| ID: mdl-33656238
Deregulated metabolism is one of the characteristics of hepatocellular carcinoma. Sex hormone receptor signalling has been involved in the marked gender dimorphism of hepatocellular carcinoma pathogenesis. Oestrogen receptor (ER) has been reported to reduce the incidence of liver cancer. However, it remains unclear how oestrogen and ER regulate metabolic alterations in liver tumour cells. Our previous work revealed that ERα interacted with carbohydrate responsive element binding protein (ChREBP), which is a transcription factor promoting aerobic glycolysis and proliferation of hepatoma cells. Here, the data showed that ERα overexpression with E2 treatment reduced aerobic glycolysis and cell proliferation of hepatoma cells. In addition to modestly down-regulating ChREBP transcription, ERα promoted ChREBP degradation. ERα co-immunoprecipitated with both ChREBP-α and ChREBP-ß, the two known subtypes of ChREBP. Although E2 promoted ERα to translocate to the nucleus, it did not change subcellular localization of ChREBP. In addition to interacting with ChREBP-ß and promoting its degradation, ERα decreased ChREBP-α-induced ChREBP-ß transcription. Taken together, we confirmed an original role of ERα in suppressing aerobic glycolysis in liver cancer cells and elucidated the mechanism by which ERα and ChREBP-α together regulated ChREBP-ß expression.
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Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Carcinoma Hepatocelular
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Receptor alfa de Estrogênio
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Proliferação de Células
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Estradiol
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Fatores de Transcrição de Zíper de Leucina e Hélice-Alça-Hélix Básicos
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Glicólise
Limite:
Humans
Idioma:
En
Ano de publicação:
2021
Tipo de documento:
Article