RESUMO

Dysregulation of mRNA translation is involved in the onset and progression of different types of cancer. To gain insight into novel genetic strategies to avoid this malady, we reviewed the available genomic, transcriptomic, and proteomic data about the translational machinery from the naked-mole rat (NMR) Heterocephalus glaber, a new model of study that exhibits high resistance to cancer. The principal features that might confer cancer resistance are 28S rRNA fragmentation, RPL26 and eIF4G overexpression, global downregulation of mTOR pathway, specific amino acid residues in RAPTOR (P908) and RICTOR (V1695), and the absence of 4E-BP3. These features are not only associated with cancer but also might couple longevity and adaptation to hypoxia. We propose that the regulation of translation is among the strategies endowing NMR cancer resistance.

Assuntos

Resistência à Doença/genética , Ratos-Toupeira/genética , Neoplasias/genética , Transcriptoma/genética , Animais , Fator de Iniciação Eucariótico 4G/genética , Regulação Neoplásica da Expressão Gênica/genética , Humanos , Longevidade/genética , Neoplasias/patologia , RNA Ribossômico 28S/genética , Proteína Companheira de mTOR Insensível à Rapamicina/genética , Proteína Regulatória Associada a mTOR/genética , Hipóxia Tumoral/genética