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Elife ; 102021 07 12.
Artículo en Inglés | MEDLINE | ID: mdl-34251339

RESUMEN

The E2F transcription factors play a critical role in controlling cell fate. In Drosophila, the inactivation of E2F in either muscle or fat body results in lethality, suggesting an essential function for E2F in these tissues. However, the cellular and organismal consequences of inactivating E2F in these tissues are not fully understood. Here, we show that the E2F loss exerts both tissue-intrinsic and systemic effects. The proteomic profiling of E2F-deficient muscle and fat body revealed that E2F regulates carbohydrate metabolism, a conclusion further supported by metabolomic profiling. Intriguingly, animals with E2F-deficient fat body had a lower level of circulating trehalose and reduced storage of fat. Strikingly, a sugar supplement was sufficient to restore both trehalose and fat levels, and subsequently rescued animal lethality. Collectively, our data highlight the unexpected complexity of E2F mutant phenotype, which is a result of combining both tissue-specific and systemic changes that contribute to animal development.


Asunto(s)
Proteínas de Drosophila/metabolismo , Factores de Transcripción E2F/metabolismo , Cuerpo Adiposo/metabolismo , Factores de Transcripción/metabolismo , Animales , Metabolismo de los Hidratos de Carbono , Ciclo Celular , Drosophila , Proteínas de Drosophila/genética , Factores de Transcripción E2F/genética , Regulación del Desarrollo de la Expresión Génica , Metabolómica/métodos , Músculos/metabolismo , Fenotipo , Proteómica/métodos , Factores de Transcripción/genética , Transcripción Genética , Trehalosa/metabolismo
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