tRNA Deregulation and Its Consequences in Cancer.

tRNA Deregulation and Its Consequences in Cancer. Trends Mol Med. 2019 Jun 24;: Authors: Santos M, Fidalgo A, Varanda AS, Oliveira C, Santos MAS Abstract The expression of transfer RNAs (tRNAs) is deregulated in cancer cells but the mechanisms and functional meaning of such deregulation are poorly understood. The proteome of cancer cells is not fully encoded by their transcriptome, however, the contribution of mRNA translation to such diversity remains to be elucidated. We review data supporting the hypothesis that tRNA expression deregulation and translational error rate is an important contributor to proteome diversity and cell population heterogeneity, genome instability, and drug resistance in tumors. This hypothesis is aligned with recent data in various model organisms, showing unanticipated adaptive roles of translational errors (adaptive mistranslation), expression control of specific gene subsets by tRNAs, and proteome diversification by elevation of translational error rates in tumors. PMID: 31248782 [PubMed - as supplied by publisher]
Source: Trends in Molecular Medicine - Category: Molecular Biology Authors: Tags: Trends Mol Med Source Type: research