MYC, Metabolic Synthetic Lethality, and Cancer.
Recent Results Cancer Res
; 207: 73-91, 2016.
Article
em En
| MEDLINE
| ID: mdl-27557535
ABSTRACT
The MYC oncogene plays a pivotal role in the development and progression of human cancers. It encodes a transcription factor that has broad reaching effects on many cellular functions, most importantly in driving cell growth through regulation of genes involved in ribosome biogenesis, metabolism, and cell cycle. Upon binding DNA with its partner MAX, MYC recruits factors that release paused RNA polymerases to drive transcription and amplify gene expression. At physiologic levels of MYC, occupancy of high-affinity DNA-binding sites drives 'house-keeping' metabolic genes and those involved in ribosome and mitochondrial biogenesis for biomass accumulation. At high oncogenic levels of MYC, invasion of low-affinity sites and enhancer sequences alter the transcriptome and cause metabolic imbalances, which activates stress response and checkpoints such as p53. Loss of checkpoints unleashes MYC's full oncogenic potential to couple metabolism with neoplastic cell growth and division. Cells that overexpress MYC, however, are vulnerable to metabolic perturbations that provide potential new avenues for cancer therapy.
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Proteínas Proto-Oncogênicas c-myc
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Mutações Sintéticas Letais
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Neoplasias
Limite:
Humans
Idioma:
En
Revista:
Recent Results Cancer Res
Ano de publicação:
2016
Tipo de documento:
Article
País de afiliação:
Estados Unidos